diff options
| -rw-r--r-- | Documentation/hwmon/adc128d818 | 47 | ||||
| -rw-r--r-- | Documentation/hwmon/lm95245 | 8 | ||||
| -rw-r--r-- | Documentation/hwmon/ltc2945 | 84 | ||||
| -rw-r--r-- | Documentation/hwmon/ltc2978 | 17 | ||||
| -rw-r--r-- | Documentation/hwmon/ltc4260 | 56 | ||||
| -rw-r--r-- | drivers/hwmon/Kconfig | 600 | ||||
| -rw-r--r-- | drivers/hwmon/Makefile | 4 | ||||
| -rw-r--r-- | drivers/hwmon/adc128d818.c | 491 | ||||
| -rw-r--r-- | drivers/hwmon/coretemp.c | 71 | ||||
| -rw-r--r-- | drivers/hwmon/emc2103.c | 2 | ||||
| -rw-r--r-- | drivers/hwmon/hwmon.c | 5 | ||||
| -rw-r--r-- | drivers/hwmon/iio_hwmon.c | 37 | ||||
| -rw-r--r-- | drivers/hwmon/jz4740-hwmon.c | 25 | ||||
| -rw-r--r-- | drivers/hwmon/lm95241.c | 93 | ||||
| -rw-r--r-- | drivers/hwmon/lm95245.c | 112 | ||||
| -rw-r--r-- | drivers/hwmon/ltc2945.c | 519 | ||||
| -rw-r--r-- | drivers/hwmon/ltc4215.c | 51 | ||||
| -rw-r--r-- | drivers/hwmon/ltc4222.c | 237 | ||||
| -rw-r--r-- | drivers/hwmon/ltc4245.c | 30 | ||||
| -rw-r--r-- | drivers/hwmon/ltc4260.c | 200 | ||||
| -rw-r--r-- | drivers/hwmon/max1668.c | 81 | ||||
| -rw-r--r-- | drivers/hwmon/max6639.c | 91 | ||||
| -rw-r--r-- | drivers/hwmon/max6650.c | 257 | ||||
| -rw-r--r-- | drivers/hwmon/pmbus/ltc2978.c | 25 | ||||
| -rw-r--r-- | drivers/hwmon/smm665.c | 2 |
25 files changed, 2292 insertions, 853 deletions
diff --git a/Documentation/hwmon/adc128d818 b/Documentation/hwmon/adc128d818 new file mode 100644 index 000000000000..39c95004dabc --- /dev/null +++ b/Documentation/hwmon/adc128d818 @@ -0,0 +1,47 @@ +Kernel driver adc128d818 +======================== + +Supported chips: + * Texas Instruments ADC818D818 + Prefix: 'adc818d818' + Addresses scanned: I2C 0x1d, 0x1e, 0x1f, 0x2d, 0x2e, 0x2f + Datasheet: Publicly available at the TI website + http://www.ti.com/ + +Author: Guenter Roeck + +Description +----------- + +This driver implements support for the Texas Instruments ADC128D818. +It is described as 'ADC System Monitor with Temperature Sensor'. + +The ADC128D818 implements one temperature sensor and seven voltage sensors. + +Temperatures are measured in degrees Celsius. There is one set of limits. +When the HOT Temperature Limit is crossed, this will cause an alarm that will +be reasserted until the temperature drops below the HOT Hysteresis. +Measurements are guaranteed between -55 and +125 degrees. The temperature +measurement has a resolution of 0.5 degrees; the limits have a resolution +of 1 degree. + +Voltage sensors (also known as IN sensors) report their values in volts. +An alarm is triggered if the voltage has crossed a programmable minimum +or maximum limit. Note that minimum in this case always means 'closest to +zero'; this is important for negative voltage measurements. All voltage +inputs can measure voltages between 0 and 2.55 volts, with a resolution +of 0.625 mV. + +If an alarm triggers, it will remain triggered until the hardware register +is read at least once. This means that the cause for the alarm may +already have disappeared by the time the alarm is read. The driver +caches the alarm status for each sensor until it is at least reported +once, to ensure that alarms are reported to user space. + +The ADC128D818 only updates its values approximately once per second; +reading it more often will do no harm, but will return 'old' values. + +In addition to the scanned address list, the chip can also be configured for +addresses 0x35 to 0x37. Those addresses are not scanned. You have to instantiate +the driver explicitly if the chip is configured for any of those addresses in +your system. diff --git a/Documentation/hwmon/lm95245 b/Documentation/hwmon/lm95245 index cbd8aeab7124..77eaf2812d25 100644 --- a/Documentation/hwmon/lm95245 +++ b/Documentation/hwmon/lm95245 @@ -24,8 +24,12 @@ is given within a range of -127 to +127.875 degrees. Remote temperatures are given within a range of -127 to +255 degrees. Resolution depends on temperature input and range. -Each sensor has its own critical limit, but the hysteresis is common to all -two channels. +Each sensor has its own critical limit. Additionally, there is a relative +hysteresis value common to both critical limits. To make life easier to +user-space applications, two absolute values are exported, one for each +channel, but these values are of course linked. Only the local hysteresis +can be set from user-space, and the same delta applies to the remote +hysteresis. The lm95245 driver can change its update interval to a fixed set of values. It will round up to the next selectable interval. See the datasheet for exact diff --git a/Documentation/hwmon/ltc2945 b/Documentation/hwmon/ltc2945 new file mode 100644 index 000000000000..f8d0f7f19adb --- /dev/null +++ b/Documentation/hwmon/ltc2945 @@ -0,0 +1,84 @@ +Kernel driver ltc2945 +===================== + +Supported chips: + * Linear Technology LTC2945 + Prefix: 'ltc2945' + Addresses scanned: - + Datasheet: + http://cds.linear.com/docs/en/datasheet/2945fa.pdf + +Author: Guenter Roeck <linux@roeck-us.net> + + +Description +----------- + +The LTC2945 is a rail-to-rail system monitor that measures current, voltage, +and power consumption. + + +Usage Notes +----------- + +This driver does not probe for LTC2945 devices, since there is no register +which can be safely used to identify the chip. You will have to instantiate +the devices explicitly. + +Example: the following will load the driver for an LTC2945 at address 0x10 +on I2C bus #1: +$ modprobe ltc2945 +$ echo ltc2945 0x10 > /sys/bus/i2c/devices/i2c-1/new_device + + +Sysfs entries +------------- + +Voltage readings provided by this driver are reported as obtained from the ADC +registers. If a set of voltage divider resistors is installed, calculate the +real voltage by multiplying the reported value with (R1+R2)/R2, where R1 is the +value of the divider resistor against the measured voltage and R2 is the value +of the divider resistor against Ground. + +Current reading provided by this driver is reported as obtained from the ADC +Current Sense register. The reported value assumes that a 1 mOhm sense resistor +is installed. If a different sense resistor is installed, calculate the real +current by dividing the reported value by the sense resistor value in mOhm. + +in1_input VIN voltage (mV). Voltage is measured either at + SENSE+ or VDD pin depending on chip configuration. +in1_min Undervoltage threshold +in1_max Overvoltage threshold +in1_lowest Lowest measured voltage +in1_highest Highest measured voltage +in1_reset_history Write 1 to reset in1 history +in1_min_alarm Undervoltage alarm +in1_max_alarm Overvoltage alarm + +in2_input ADIN voltage (mV) +in2_min Undervoltage threshold +in2_max Overvoltage threshold +in2_lowest Lowest measured voltage +in2_highest Highest measured voltage +in2_reset_history Write 1 to reset in2 history +in2_min_alarm Undervoltage alarm +in2_max_alarm Overvoltage alarm + +curr1_input SENSE current (mA) +curr1_min Undercurrent threshold +curr1_max Overcurrent threshold +curr1_lowest Lowest measured current +curr1_highest Highest measured current +curr1_reset_history Write 1 to reset curr1 history +curr1_min_alarm Undercurrent alarm +curr1_max_alarm Overcurrent alarm + +power1_input Power (in uW). Power is calculated based on SENSE+/VDD + voltage or ADIN voltage depending on chip configuration. +power1_min Low lower threshold +power1_max High power threshold +power1_input_lowest Historical minimum power use +power1_input_highest Historical maximum power use +power1_reset_history Write 1 to reset power1 history +power1_min_alarm Low power alarm +power1_max_alarm High power alarm diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978 index a0546fc42273..686c078bb0e0 100644 --- a/Documentation/hwmon/ltc2978 +++ b/Documentation/hwmon/ltc2978 @@ -23,6 +23,10 @@ Supported chips: Prefix: 'ltc3883' Addresses scanned: - Datasheet: http://www.linear.com/product/ltc3883 + * Linear Technology LTM4676 + Prefix: 'ltm4676' + Addresses scanned: - + Datasheet: http://www.linear.com/product/ltm4676 Author: Guenter Roeck <linux@roeck-us.net> @@ -33,7 +37,8 @@ Description LTC2974 is a quad digital power supply manager. LTC2978 is an octal power supply monitor. LTC2977 is a pin compatible replacement for LTC2978. LTC3880 is a dual output poly-phase step-down DC/DC controller. LTC3883 is a single phase -step-down DC/DC controller. +step-down DC/DC controller. LTM4676 is a dual 13A or single 26A uModule +regulator. Usage Notes @@ -75,7 +80,7 @@ in[N]_label "vout[1-8]". LTC2974: N=2-5 LTC2977: N=2-9 LTC2978: N=2-9 - LTC3880: N=2-3 + LTC3880, LTM4676: N=2-3 LTC3883: N=2 in[N]_input Measured output voltage. in[N]_min Minimum output voltage. @@ -95,7 +100,7 @@ temp[N]_input Measured temperature. and temp5 reports the chip temperature. On LTC2977 and LTC2978, only one temperature measurement is supported and reports the chip temperature. - On LTC3880, temp1 and temp2 report external + On LTC3880 and LTM4676, temp1 and temp2 report external temperatures, and temp3 reports the chip temperature. On LTC3883, temp1 reports an external temperature, and temp2 reports the chip temperature. @@ -123,11 +128,11 @@ power[N]_label "pout[1-4]". LTC2974: N=1-4 LTC2977: Not supported LTC2978: Not supported - LTC3880: N=1-2 + LTC3880, LTM4676: N=1-2 LTC3883: N=2 power[N]_input Measured output power. -curr1_label "iin". LTC3880 and LTC3883 only. +curr1_label "iin". LTC3880, LTC3883, and LTM4676 only. curr1_input Measured input current. curr1_max Maximum input current. curr1_max_alarm Input current high alarm. @@ -138,7 +143,7 @@ curr[N]_label "iout[1-4]". LTC2974: N=1-4 LTC2977: not supported LTC2978: not supported - LTC3880: N=2-3 + LTC3880, LTM4676: N=2-3 LTC3883: N=2 curr[N]_input Measured output current. curr[N]_max Maximum output current. diff --git a/Documentation/hwmon/ltc4260 b/Documentation/hwmon/ltc4260 new file mode 100644 index 000000000000..c4ff4ad998b2 --- /dev/null +++ b/Documentation/hwmon/ltc4260 @@ -0,0 +1,56 @@ +Kernel driver ltc4260 +===================== + +Supported chips: + * Linear Technology LTC4260 + Prefix: 'ltc4260' + Addresses scanned: - + Datasheet: + http://cds.linear.com/docs/en/datasheet/4260fc.pdf + +Author: Guenter Roeck <linux@roeck-us.net> + + +Description +----------- + +The LTC4260 Hot Swap controller allows a board to be safely inserted +and removed from a live backplane. + + +Usage Notes +----------- + +This driver does not probe for LTC4260 devices, since there is no register +which can be safely used to identify the chip. You will have to instantiate +the devices explicitly. + +Example: the following will load the driver for an LTC4260 at address 0x10 +on I2C bus #1: +$ modprobe ltc4260 +$ echo ltc4260 0x10 > /sys/bus/i2c/devices/i2c-1/new_device + + +Sysfs entries +------------- + +Voltage readings provided by this driver are reported as obtained from the ADC +registers. If a set of voltage divider resistors is installed, calculate the +real voltage by multiplying the reported value with (R1+R2)/R2, where R1 is the +value of the divider resistor against the measured voltage and R2 is the value +of the divider resistor against Ground. + +Current reading provided by this driver is reported as obtained from the ADC +Current Sense register. The reported value assumes that a 1 mOhm sense resistor +is installed. If a different sense resistor is installed, calculate the real +current by dividing the reported value by the sense resistor value in mOhm. + +in1_input SOURCE voltage (mV) +in1_min_alarm Undervoltage alarm +in1_max_alarm Overvoltage alarm + +in2_input ADIN voltage (mV) +in2_alarm Power bad alarm + +curr1_input SENSE current (mA) +curr1_alarm SENSE overcurrent alarm diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 5ce43d8dfa98..f288b60a87be 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -111,22 +111,6 @@ config SENSORS_AD7418 This driver can also be built as a module. If so, the module will be called ad7418. -config SENSORS_ADCXX - tristate "National Semiconductor ADCxxxSxxx" - depends on SPI_MASTER - help - If you say yes here you get support for the National Semiconductor - ADC<bb><c>S<sss> chip family, where - * bb is the resolution in number of bits (8, 10, 12) - * c is the number of channels (1, 2, 4, 8) - * sss is the maximum conversion speed (021 for 200 kSPS, 051 for 500 - kSPS and 101 for 1 MSPS) - - Examples : ADC081S101, ADC124S501, ... - - This driver can also be built as a module. If so, the module - will be called adcxx. - config SENSORS_ADM1021 tristate "Analog Devices ADM1021 and compatibles" depends on I2C @@ -312,6 +296,31 @@ config SENSORS_FAM15H_POWER This driver can also be built as a module. If so, the module will be called fam15h_power. +config SENSORS_APPLESMC + tristate "Apple SMC (Motion sensor, light sensor, keyboard backlight)" + depends on INPUT && X86 + select NEW_LEDS + select LEDS_CLASS + select INPUT_POLLDEV + default n + help + This driver provides support for the Apple System Management + Controller, which provides an accelerometer (Apple Sudden Motion + Sensor), light sensors, temperature sensors, keyboard backlight + control and fan control. + + Only Intel-based Apple's computers are supported (MacBook Pro, + MacBook, MacMini). + + Data from the different sensors, keyboard backlight control and fan + control are accessible via sysfs. + + This driver also provides an absolute input class device, allowing + the laptop to act as a pinball machine-esque joystick. + + Say Y here if you have an applicable laptop and want to experience + the awesome power of applesmc. + config SENSORS_ASB100 tristate "Asus ASB100 Bach" depends on X86 && I2C @@ -435,6 +444,12 @@ config SENSORS_F75375S This driver can also be built as a module. If so, the module will be called f75375s. +config SENSORS_MC13783_ADC + tristate "Freescale MC13783/MC13892 ADC" + depends on MFD_MC13XXX + help + Support for the A/D converter on MC13783 and MC13892 PMIC. + config SENSORS_FSCHMD tristate "Fujitsu Siemens Computers sensor chips" depends on X86 && I2C @@ -451,26 +466,6 @@ config SENSORS_FSCHMD This driver can also be built as a module. If so, the module will be called fschmd. -config SENSORS_G760A - tristate "GMT G760A" - depends on I2C - help - If you say yes here you get support for Global Mixed-mode - Technology Inc G760A fan speed PWM controller chips. - - This driver can also be built as a module. If so, the module - will be called g760a. - -config SENSORS_G762 - tristate "GMT G762 and G763" - depends on I2C - help - If you say yes here you get support for Global Mixed-mode - Technology Inc G762 and G763 fan speed PWM controller chips. - - This driver can also be built as a module. If so, the module - will be called g762. - config SENSORS_GL518SM tristate "Genesys Logic GL518SM" depends on I2C @@ -492,6 +487,26 @@ config SENSORS_GL520SM This driver can also be built as a module. If so, the module will be called gl520sm. +config SENSORS_G760A + tristate "GMT G760A" + depends on I2C + help + If you say yes here you get support for Global Mixed-mode + Technology Inc G760A fan speed PWM controller chips. + + This driver can also be built as a module. If so, the module + will be called g760a. + +config SENSORS_G762 + tristate "GMT G762 and G763" + depends on I2C + help + If you say yes here you get support for Global Mixed-mode + Technology Inc G762 and G763 fan speed PWM controller chips. + + This driver can also be built as a module. If so, the module + will be called g762. + config SENSORS_GPIO_FAN tristate "GPIO fan" depends on GPIOLIB @@ -511,24 +526,6 @@ config SENSORS_HIH6130 This driver can also be built as a module. If so, the module will be called hih6130. -config SENSORS_HTU21 - tristate "Measurement Specialties HTU21D humidity/temperature sensors" - depends on I2C - help - If you say yes here you get support for the Measurement Specialties - HTU21D humidity and temperature sensors. - - This driver can also be built as a module. If so, the module - will be called htu21. - -config SENSORS_CORETEMP - tristate "Intel Core/Core2/Atom temperature sensor" - depends on X86 - help - If you say yes here you get support for the temperature - sensor inside your CPU. Most of the family 6 CPUs - are supported. Check Documentation/hwmon/coretemp for details. - config SENSORS_IBMAEM tristate "IBM Active Energy Manager temperature/power sensors and control" select IPMI_SI @@ -566,6 +563,14 @@ config SENSORS_IIO_HWMON for those channels specified in the map. This map can be provided either via platform data or the device tree bindings. +config SENSORS_CORETEMP + tristate "Intel Core/Core2/Atom temperature sensor" + depends on X86 + help + If you say yes here you get support for the temperature + sensor inside your CPU. Most of the family 6 CPUs + are supported. Check Documentation/hwmon/coretemp for details. + config SENSORS_IT87 tristate "ITE IT87xx and compatibles" depends on !PPC @@ -614,6 +619,219 @@ config SENSORS_LINEAGE This driver can also be built as a module. If so, the module will be called lineage-pem. +config SENSORS_LTC2945 + tristate "Linear Technology LTC2945" + depends on I2C + select REGMAP_I2C + default n + help + If you say yes here you get support for Linear Technology LTC2945 + I2C System Monitor. + + This driver can also be built as a module. If so, the module will + be called ltc2945. + +config SENSORS_LTC4151 + tristate "Linear Technology LTC4151" + depends on I2C + default n + help + If you say yes here you get support for Linear Technology LTC4151 + High Voltage I2C Current and Voltage Monitor interface. + + This driver can also be built as a module. If so, the module will + be called ltc4151. + +config SENSORS_LTC4215 + tristate "Linear Technology LTC4215" + depends on I2C + default n + help + If you say yes here you get support for Linear Technology LTC4215 + Hot Swap Controller I2C interface. + + This driver can also be built as a module. If so, the module will + be called ltc4215. + +config SENSORS_LTC4222 + tristate "Linear Technology LTC4222" + depends on I2C + select REGMAP_I2C + default n + help + If you say yes here you get support for Linear Technology LTC4222 + Dual Hot Swap Controller I2C interface. + + This driver can also be built as a module. If so, the module will + be called ltc4222. + +config SENSORS_LTC4245 + tristate "Linear Technology LTC4245" + depends on I2C + default n + help + If you say yes here you get support for Linear Technology LTC4245 + Multiple Supply Hot Swap Controller I2C interface. + + This driver can also be built as a module. If so, the module will + be called ltc4245. + +config SENSORS_LTC4260 + tristate "Linear Technology LTC4260" + depends on I2C + select REGMAP_I2C + default n + help + If you say yes here you get support for Linear Technology LTC4260 + Positive Voltage Hot Swap Controller I2C interface. + + This driver can also be built as a module. If so, the module will + be called ltc4260. + +config SENSORS_LTC4261 + tristate "Linear Technology LTC4261" + depends on I2C + default n + help + If you say yes here you get support for Linear Technology LTC4261 + Negative Voltage Hot Swap Controller I2C interface. + + This driver can also be built as a module. If so, the module will + be called ltc4261. + +config SENSORS_MAX1111 + tristate "Maxim MAX1111 Serial 8-bit ADC chip and compatibles" + depends on SPI_MASTER + help + Say y here to support Maxim's MAX1110, MAX1111, MAX1112, and MAX1113 + ADC chips. + + This driver can also be built as a module. If so, the module + will be called max1111. + +config SENSORS_MAX16065 + tristate "Maxim MAX16065 System Manager and compatibles" + depends on I2C + help + If you say yes here you get support for hardware monitoring + capabilities of the following Maxim System Manager chips. + MAX16065 + MAX16066 + MAX16067 + MAX16068 + MAX16070 + MAX16071 + + This driver can also be built as a module. If so, the module + will be called max16065. + +config SENSORS_MAX1619 + tristate "Maxim MAX1619 sensor chip" + depends on I2C + help + If you say yes here you get support for MAX1619 sensor chip. + + This driver can also be built as a module. If so, the module + will be called max1619. + +config SENSORS_MAX1668 + tristate "Maxim MAX1668 and compatibles" + depends on I2C + help + If you say yes here you get support for MAX1668, MAX1989 and + MAX1805 chips. + + This driver can also be built as a module. If so, the module + will be called max1668. + +config SENSORS_MAX197 + tristate "Maxim MAX197 and compatibles" + help + Support for the Maxim MAX197 A/D converter. + Support will include, but not be limited to, MAX197, and MAX199. + + This driver can also be built as a module. If so, the module + will be called max197. + +config SENSORS_MAX6639 + tristate "Maxim MAX6639 sensor chip" + depends on I2C + help + If you say yes here you get support for the MAX6639 + sensor chips. + + This driver can also be built as a module. If so, the module + will be called max6639. + +config SENSORS_MAX6642 + tristate "Maxim MAX6642 sensor chip" + depends on I2C + help + If you say yes here you get support for MAX6642 sensor chip. + MAX6642 is a SMBus-Compatible Remote/Local Temperature Sensor + with Overtemperature Alarm from Maxim. + + This driver can also be built as a module. If so, the module + will be called max6642. + +config SENSORS_MAX6650 + tristate "Maxim MAX6650 sensor chip" + depends on I2C + help + If you say yes here you get support for the MAX6650 / MAX6651 + sensor chips. + + This driver can also be built as a module. If so, the module + will be called max6650. + +config SENSORS_MAX6697 + tristate "Maxim MAX6697 and compatibles" + depends on I2C + help + If you say yes here you get support for MAX6581, MAX6602, MAX6622, + MAX6636, MAX6689, MAX6693, MAX6694, MAX6697, MAX6698, and MAX6699 + temperature sensor chips. + + This driver can also be built as a module. If so, the module + will be called max6697. + +config SENSORS_HTU21 + tristate "Measurement Specialties HTU21D humidity/temperature sensors" + depends on I2C + help + If you say yes here you get support for the Measurement Specialties + HTU21D humidity and temperature sensors. + + This driver can also be built as a module. If so, the module + will be called htu21. + +config SENSORS_MCP3021 + tristate "Microchip MCP3021 and compatibles" + depends on I2C + help + If you say yes here you get support for MCP3021 and MCP3221. + The MCP3021 is a A/D converter (ADC) with 10-bit and the MCP3221 + with 12-bit resolution. + + This driver can also be built as a module. If so, the module + will be called mcp3021. + +config SENSORS_ADCXX + tristate "National Semiconductor ADCxxxSxxx" + depends on SPI_MASTER + help + If you say yes here you get support for the National Semiconductor + ADC<bb><c>S<sss> chip family, where + * bb is the resolution in number of bits (8, 10, 12) + * c is the number of channels (1, 2, 4, 8) + * sss is the maximum conversion speed (021 for 200 kSPS, 051 for 500 + kSPS and 101 for 1 MSPS) + + Examples : ADC081S101, ADC124S501, ... + + This driver can also be built as a module. If so, the module + will be called adcxx. + config SENSORS_LM63 tristate "National Semiconductor LM63 and compatibles" depends on I2C @@ -776,50 +994,6 @@ config SENSORS_LM93 This driver can also be built as a module. If so, the module will be called lm93. -config SENSORS_LTC4151 - tristate "Linear Technology LTC4151" - depends on I2C - default n - help - If you say yes here you get support for Linear Technology LTC4151 - High Voltage I2C Current and Voltage Monitor interface. - - This driver can also be built as a module. If so, the module will - be called ltc4151. - -config SENSORS_LTC4215 - tristate "Linear Technology LTC4215" - depends on I2C - default n - help - If you say yes here you get support for Linear Technology LTC4215 - Hot Swap Controller I2C interface. - - This driver can also be built as a module. If so, the module will - be called ltc4215. - -config SENSORS_LTC4245 - tristate "Linear Technology LTC4245" - depends on I2C - default n - help - If you say yes here you get support for Linear Technology LTC4245 - Multiple Supply Hot Swap Controller I2C interface. - - This driver can also be built as a module. If so, the module will - be called ltc4245. - -config SENSORS_LTC4261 - tristate "Linear Technology LTC4261" - depends on I2C - default n - help - If you say yes here you get support for Linear Technology LTC4261 - Negative Voltage Hot Swap Controller I2C interface. - - This driver can also be built as a module. If so, the module will - be called ltc4261. - config SENSORS_LM95234 tristate "National Semiconductor LM95234" depends on I2C @@ -849,125 +1023,33 @@ config SENSORS_LM95245 This driver can also be built as a module. If so, the module will be called lm95245. -config SENSORS_MAX1111 - tristate "Maxim MAX1111 Serial 8-bit ADC chip and compatibles" - depends on SPI_MASTER - help - Say y here to support Maxim's MAX1110, MAX1111, MAX1112, and MAX1113 - ADC chips. - - This driver can also be built as a module. If so, the module - will be called max1111. - -config SENSORS_MAX16065 - tristate "Maxim MAX16065 System Manager and compatibles" - depends on I2C - help - If you say yes here you get support for hardware monitoring - capabilities of the following Maxim System Manager chips. - MAX16065 - MAX16066 - MAX16067 - MAX16068 - MAX16070 - MAX16071 - - This driver can also be built as a module. If so, the module - will be called max16065. - -config SENSORS_MAX1619 - tristate "Maxim MAX1619 sensor chip" - depends on I2C - help - If you say yes here you get support for MAX1619 sensor chip. - - This driver can also be built as a module. If so, the module - will be called max1619. - -config SENSORS_MAX1668 - tristate "Maxim MAX1668 and compatibles" - depends on I2C - help - If you say yes here you get support for MAX1668, MAX1989 and - MAX1805 chips. - - This driver can also be built as a module. If so, the module - will be called max1668. - -config SENSORS_MAX197 - tristate "Maxim MAX197 and compatibles" - help - Support for the Maxim MAX197 A/D converter. - Support will include, but not be limited to, MAX197, and MAX199. - - This driver can also be built as a module. If so, the module - will be called max197. - -config SENSORS_MAX6639 - tristate "Maxim MAX6639 sensor chip" - depends on I2C - help - If you say yes here you get support for the MAX6639 - sensor chips. - - This driver can also be built as a module. If so, the module - will be called max6639. - -config SENSORS_MAX6642 - tristate "Maxim MAX6642 sensor chip" - depends on I2C - help - If you say yes here you get support for MAX6642 sensor chip. - MAX6642 is a SMBus-Compatible Remote/Local Temperature Sensor - with Overtemperature Alarm from Maxim. - - This driver can also be built as a module. If so, the module - will be called max6642. - -config SENSORS_MAX6650 - tristate "Maxim MAX6650 sensor chip" - depends on I2C - help - If you say yes here you get support for the MAX6650 / MAX6651 - sensor chips. - - This driver can also be built as a module. If so, the module - will be called max6650. - -config SENSORS_MAX6697 - tristate "Maxim MAX6697 and compatibles" - depends on I2C - help - If you say yes here you get support for MAX6581, MAX6602, MAX6622, - MAX6636, MAX6689, MAX6693, MAX6694, MAX6697, MAX6698, and MAX6699 - temperature sensor chips. - - This driver can also be built as a module. If so, the module - will be called max6697. - -config SENSORS_MCP3021 - tristate "Microchip MCP3021 and compatibles" - depends on I2C +config SENSORS_PC87360 + tristate "National Semiconductor PC87360 family" + depends on !PPC + select HWMON_VID help - If you say yes here you get support for MCP3021 and MCP3221. - The MCP3021 is a A/D converter (ADC) with 10-bit and the MCP3221 - with 12-bit resolution. + If you say yes here you get access to the hardware monitoring + functions of the National Semiconductor PC8736x Super-I/O chips. + The PC87360, PC87363 and PC87364 only have fan monitoring and + control. The PC87365 and PC87366 additionally have voltage and + temperature monitoring. This driver can also be built as a module. If so, the module - will be called mcp3021. + will be called pc87360. -config SENSORS_NCT6775 - tristate "Nuvoton NCT6775F and compatibles" +config SENSORS_PC87427 + tristate "National Semiconductor PC87427" depends on !PPC - select HWMON_VID help - If you say yes here you get support for the hardware monitoring - functionality of the Nuvoton NCT6775F, NCT6776F, NCT6779D - and compatible Super-I/O chips. This driver replaces the - w83627ehf driver for NCT6775F and NCT6776F. + If you say yes here you get access to the hardware monitoring + functions of the National Semiconductor PC87427 Super-I/O chip. + The chip has two distinct logical devices, one for fan speed + monitoring and control, and one for voltage and temperature + monitoring. Fan speed monitoring and control are supported, as + well as temperature monitoring. Voltages aren't supported yet. This driver can also be built as a module. If so, the module - will be called nct6775. + will be called pc87427. config SENSORS_NTC_THERMISTOR tristate "NTC thermistor support" @@ -983,33 +1065,18 @@ config SENSORS_NTC_THERMISTOR This driver can also be built as a module. If so, the module will be called ntc-thermistor. -config SENSORS_PC87360 - tristate "National Semiconductor PC87360 family" +config SENSORS_NCT6775 + tristate "Nuvoton NCT6775F and compatibles" depends on !PPC select HWMON_VID help - If you say yes here you get access to the hardware monitoring - functions of the National Semiconductor PC8736x Super-I/O chips. - The PC87360, PC87363 and PC87364 only have fan monitoring and - control. The PC87365 and PC87366 additionally have voltage and - temperature monitoring. - - This driver can also be built as a module. If so, the module - will be called pc87360. - -config SENSORS_PC87427 - tristate "National Semiconductor PC87427" - depends on !PPC - help - If you say yes here you get access to the hardware monitoring - functions of the National Semiconductor PC87427 Super-I/O chip. - The chip has two distinct logical devices, one for fan speed - monitoring and control, and one for voltage and temperature - monitoring. Fan speed monitoring and control are supported, as - well as temperature monitoring. Voltages aren't supported yet. + If you say yes here you get support for the hardware monitoring + functionality of the Nuvoton NCT6775F, NCT6776F, NCT6779D + and compatible Super-I/O chips. This driver replaces the + w83627ehf driver for NCT6775F and NCT6776F. This driver can also be built as a module. If so, the module - will be called pc87427. + will be called nct6775. config SENSORS_PCF8591 tristate "Philips PCF8591 ADC/DAC" @@ -1074,21 +1141,6 @@ config SENSORS_SIS5595 This driver can also be built as a module. If so, the module will be called sis5595. -config SENSORS_SMM665 - tristate "Summit Microelectronics SMM665" - depends on I2C - default n - help - If you say yes here you get support for the hardware monitoring - features of the Summit Microelectronics SMM665/SMM665B Six-Channel - Active DC Output Controller / Monitor. - - Other supported chips are SMM465, SMM665C, SMM764, and SMM766. - Support for those chips is untested. - - This driver can also be built as a module. If so, the module will - be called smm665. - config SENSORS_DME1737 tristate "SMSC DME1737, SCH311x and compatibles" depends on I2C && !PPC @@ -1210,6 +1262,31 @@ config SENSORS_SCH5636 This driver can also be built as a module. If so, the module will be called sch5636. +config SENSORS_SMM665 + tristate "Summit Microelectronics SMM665" + depends on I2C + default n + help + If you say yes here you get support for the hardware monitoring + features of the Summit Microelectronics SMM665/SMM665B Six-Channel + Active DC Output Controller / Monitor. + + Other supported chips are SMM465, SMM665C, SMM764, and SMM766. + Support for those chips is untested. + + This driver can also be built as a module. If so, the module will + be called smm665. + +config SENSORS_ADC128D818 + tristate "Texas Instruments ADC128D818" + depends on I2C + help + If you say yes here you get support for the Texas Instruments + ADC128D818 System Monitor with Temperature Sensor chip. + + This driver can also be built as a module. If so, the module + will be called adc128d818. + config SENSORS_ADS1015 tristate "Texas Instruments ADS1015" depends on I2C @@ -1525,37 +1602,6 @@ config SENSORS_ULTRA45 This driver provides support for the Ultra45 workstation environmental sensors. -config SENSORS_APPLESMC - tristate "Apple SMC (Motion sensor, light sensor, keyboard backlight)" - depends on INPUT && X86 - select NEW_LEDS - select LEDS_CLASS - select INPUT_POLLDEV - default n - help - This driver provides support for the Apple System Management - Controller, which provides an accelerometer (Apple Sudden Motion - Sensor), light sensors, temperature sensors, keyboard backlight - control and fan control. - - Only Intel-based Apple's computers are supported (MacBook Pro, - MacBook, MacMini). - - Data from the different sensors, keyboard backlight control and fan - control are accessible via sysfs. - - This driver also provides an absolute input class device, allowing - the laptop to act as a pinball machine-esque joystick. - - Say Y here if you have an applicable laptop and want to experience - the awesome power of applesmc. - -config SENSORS_MC13783_ADC - tristate "Freescale MC13783/MC13892 ADC" - depends on MFD_MC13XXX - help - Support for the A/D converter on MC13783 and MC13892 PMIC. - if ACPI comment "ACPI drivers" diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index ec7cde06eb52..c48f9873ac73 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_SENSORS_ABITUGURU3)+= abituguru3.o obj-$(CONFIG_SENSORS_AD7314) += ad7314.o obj-$(CONFIG_SENSORS_AD7414) += ad7414.o obj-$(CONFIG_SENSORS_AD7418) += ad7418.o +obj-$(CONFIG_SENSORS_ADC128D818) += adc128d818.o obj-$(CONFIG_SENSORS_ADCXX) += adcxx.o obj-$(CONFIG_SENSORS_ADM1021) += adm1021.o obj-$(CONFIG_SENSORS_ADM1025) += adm1025.o @@ -95,9 +96,12 @@ obj-$(CONFIG_SENSORS_LM93) += lm93.o obj-$(CONFIG_SENSORS_LM95234) += lm95234.o obj-$(CONFIG_SENSORS_LM95241) += lm95241.o obj-$(CONFIG_SENSORS_LM95245) += lm95245.o +obj-$(CONFIG_SENSORS_LTC2945) += ltc2945.o obj-$(CONFIG_SENSORS_LTC4151) += ltc4151.o obj-$(CONFIG_SENSORS_LTC4215) += ltc4215.o +obj-$(CONFIG_SENSORS_LTC4222) += ltc4222.o obj-$(CONFIG_SENSORS_LTC4245) += ltc4245.o +obj-$(CONFIG_SENSORS_LTC4260) += ltc4260.o obj-$(CONFIG_SENSORS_LTC4261) += ltc4261.o obj-$(CONFIG_SENSORS_MAX1111) += max1111.o obj-$(CONFIG_SENSORS_MAX16065) += max16065.o diff --git a/drivers/hwmon/adc128d818.c b/drivers/hwmon/adc128d818.c new file mode 100644 index 000000000000..5ffd81f19d01 --- /dev/null +++ b/drivers/hwmon/adc128d818.c @@ -0,0 +1,491 @@ +/* + * Driver for TI ADC128D818 System Monitor with Temperature Sensor + * + * Copyright (c) 2014 Guenter Roeck + * + * Derived from lm80.c + * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> + * and Philip Edelbrock <phil@netroedge.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/jiffies.h> +#include <linux/i2c.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/err.h> +#include <linux/regulator/consumer.h> +#include <linux/mutex.h> + +/* Addresses to scan + * The chip also supports addresses 0x35..0x37. Don't scan those addresses + * since they are also used by some EEPROMs, which may result in false + * positives. + */ +static const unsigned short normal_i2c[] = { + 0x1d, 0x1e, 0x1f, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END }; + +/* registers */ +#define ADC128_REG_IN_MAX(nr) (0x2a + (nr) * 2) +#define ADC128_REG_IN_MIN(nr) (0x2b + (nr) * 2) +#define ADC128_REG_IN(nr) (0x20 + (nr)) + +#define ADC128_REG_TEMP 0x27 +#define ADC128_REG_TEMP_MAX 0x38 +#define ADC128_REG_TEMP_HYST 0x39 + +#define ADC128_REG_CONFIG 0x00 +#define ADC128_REG_ALARM 0x01 +#define ADC128_REG_MASK 0x03 +#define ADC128_REG_CONV_RATE 0x07 +#define ADC128_REG_ONESHOT 0x09 +#define ADC128_REG_SHUTDOWN 0x0a +#define ADC128_REG_CONFIG_ADV 0x0b +#define ADC128_REG_BUSY_STATUS 0x0c + +#define ADC128_REG_MAN_ID 0x3e +#define ADC128_REG_DEV_ID 0x3f + +struct adc128_data { + struct i2c_client *client; + struct regulator *regulator; + int vref; /* Reference voltage in mV */ + struct mutex update_lock; + bool valid; /* true if following fields are valid */ + unsigned long last_updated; /* In jiffies */ + + u16 in[3][7]; /* Register value, normalized to 12 bit + * 0: input voltage + * 1: min limit + * 2: max limit + */ + s16 temp[3]; /* Register value, normalized to 9 bit + * 0: sensor 1: limit 2: hyst + */ + u8 alarms; /* alarm register value */ +}; + +static struct adc128_data *adc128_update_device(struct device *dev) +{ + struct adc128_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + struct adc128_data *ret = data; + int i, rv; + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { + for (i = 0; i < 7; i++) { + rv = i2c_smbus_read_word_swapped(client, + ADC128_REG_IN(i)); + if (rv < 0) + goto abort; + data->in[0][i] = rv >> 4; + + rv = i2c_smbus_read_byte_data(client, + ADC128_REG_IN_MIN(i)); + if (rv < 0) + goto abort; + data->in[1][i] = rv << 4; + + rv = i2c_smbus_read_byte_data(client, + ADC128_REG_IN_MAX(i)); + if (rv < 0) + goto abort; + data->in[2][i] = rv << 4; + } + + rv = i2c_smbus_read_word_swapped(client, ADC128_REG_TEMP); + if (rv < 0) + goto abort; + data->temp[0] = rv >> 7; + + rv = i2c_smbus_read_byte_data(client, ADC128_REG_TEMP_MAX); + if (rv < 0) + goto abort; + data->temp[1] = rv << 1; + + rv = i2c_smbus_read_byte_data(client, ADC128_REG_TEMP_HYST); + if (rv < 0) + goto abort; + data->temp[2] = rv << 1; + + rv = i2c_smbus_read_byte_data(client, ADC128_REG_ALARM); + if (rv < 0) + goto abort; + data->alarms |= rv; + + data->last_updated = jiffies; + data->valid = true; + } + goto done; + +abort: + ret = ERR_PTR(rv); + data->valid = false; +done: + mutex_unlock(&data->update_lock); + return ret; +} + +static ssize_t adc128_show_in(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct adc128_data *data = adc128_update_device(dev); + int index = to_sensor_dev_attr_2(attr)->index; + int nr = to_sensor_dev_attr_2(attr)->nr; + int val; + + if (IS_ERR(data)) + return PTR_ERR(data); + + val = DIV_ROUND_CLOSEST(data->in[index][nr] * data->vref, 4095); + return sprintf(buf, "%d\n", val); +} + +static ssize_t adc128_set_in(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct adc128_data *data = dev_get_drvdata(dev); + int index = to_sensor_dev_attr_2(attr)->index; + int nr = to_sensor_dev_attr_2(attr)->nr; + u8 reg, regval; + long val; + int err; + + err = kstrtol(buf, 10, &val); + if (err < 0) + return err; + + mutex_lock(&data->update_lock); + /* 10 mV LSB on limit registers */ + regval = clamp_val(DIV_ROUND_CLOSEST(val, 10), 0, 255); + data->in[index][nr] = regval << 4; + reg = index == 1 ? ADC128_REG_IN_MIN(nr) : ADC128_REG_IN_MAX(nr); + i2c_smbus_write_byte_data(data->client, reg, regval); + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t adc128_show_temp(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct adc128_data *data = adc128_update_device(dev); + int index = to_sensor_dev_attr(attr)->index; + int temp; + + if (IS_ERR(data)) + return PTR_ERR(data); + + temp = (data->temp[index] << 7) >> 7; /* sign extend */ + return sprintf(buf, "%d\n", temp * 500);/* 0.5 degrees C resolution */ +} + +static ssize_t adc128_set_temp(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct adc128_data *data = dev_get_drvdata(dev); + int index = to_sensor_dev_attr(attr)->index; + long val; + int err; + s8 regval; + + err = kstrtol(buf, 10, &val); + if (err < 0) + return err; + + mutex_lock(&data->update_lock); + regval = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127); + data->temp[index] = regval << 1; + i2c_smbus_write_byte_data(data->client, + index == 1 ? ADC128_REG_TEMP_MAX + : ADC128_REG_TEMP_HYST, + regval); + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t adc128_show_alarm(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct adc128_data *data = adc128_update_device(dev); + int mask = 1 << to_sensor_dev_attr(attr)->index; + u8 alarms; + + if (IS_ERR(data)) + return PTR_ERR(data); + + /* + * Clear an alarm after reporting it to user space. If it is still + * active, the next update sequence will set the alarm bit again. + */ + alarms = data->alarms; + data->alarms &= ~mask; + + return sprintf(buf, "%u\n", !!(alarms & mask)); +} + +static SENSOR_DEVICE_ATTR_2(in0_input, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 0, 0); +static SENSOR_DEVICE_ATTR_2(in0_min, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 0, 1); +static SENSOR_DEVICE_ATTR_2(in0_max, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 0, 2); + +static SENSOR_DEVICE_ATTR_2(in1_input, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 1, 0); +static SENSOR_DEVICE_ATTR_2(in1_min, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 1, 1); +static SENSOR_DEVICE_ATTR_2(in1_max, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 1, 2); + +static SENSOR_DEVICE_ATTR_2(in2_input, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 2, 0); +static SENSOR_DEVICE_ATTR_2(in2_min, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 2, 1); +static SENSOR_DEVICE_ATTR_2(in2_max, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 2, 2); + +static SENSOR_DEVICE_ATTR_2(in3_input, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 3, 0); +static SENSOR_DEVICE_ATTR_2(in3_min, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 3, 1); +static SENSOR_DEVICE_ATTR_2(in3_max, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 3, 2); + +static SENSOR_DEVICE_ATTR_2(in4_input, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 4, 0); +static SENSOR_DEVICE_ATTR_2(in4_min, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 4, 1); +static SENSOR_DEVICE_ATTR_2(in4_max, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 4, 2); + +static SENSOR_DEVICE_ATTR_2(in5_input, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 5, 0); +static SENSOR_DEVICE_ATTR_2(in5_min, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 5, 1); +static SENSOR_DEVICE_ATTR_2(in5_max, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 5, 2); + +static SENSOR_DEVICE_ATTR_2(in6_input, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 6, 0); +static SENSOR_DEVICE_ATTR_2(in6_min, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 6, 1); +static SENSOR_DEVICE_ATTR_2(in6_max, S_IWUSR | S_IRUGO, + adc128_show_in, adc128_set_in, 6, 2); + +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, adc128_show_temp, NULL, 0); +static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, + adc128_show_temp, adc128_set_temp, 1); +static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, + adc128_show_temp, adc128_set_temp, 2); + +static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, adc128_show_alarm, NULL, 0); +static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, adc128_show_alarm, NULL, 1); +static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, adc128_show_alarm, NULL, 2); +static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, adc128_show_alarm, NULL, 3); +static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, adc128_show_alarm, NULL, 4); +static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, adc128_show_alarm, NULL, 5); +static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, adc128_show_alarm, NULL, 6); +static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, adc128_show_alarm, NULL, 7); + +static struct attribute *adc128_attrs[] = { + &sensor_dev_attr_in0_min.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in3_min.dev_attr.attr, + &sensor_dev_attr_in4_min.dev_attr.attr, + &sensor_dev_attr_in5_min.dev_attr.attr, + &sensor_dev_attr_in6_min.dev_attr.attr, + &sensor_dev_attr_in0_max.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in3_max.dev_attr.attr, + &sensor_dev_attr_in4_max.dev_attr.attr, + &sensor_dev_attr_in5_max.dev_attr.attr, + &sensor_dev_attr_in6_max.dev_attr.attr, + &sensor_dev_attr_in0_input.dev_attr.attr, + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in4_input.dev_attr.attr, + &sensor_dev_attr_in5_input.dev_attr.attr, + &sensor_dev_attr_in6_input.dev_attr.attr, + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, + &sensor_dev_attr_in0_alarm.dev_attr.attr, + &sensor_dev_attr_in1_alarm.dev_attr.attr, + &sensor_dev_attr_in2_alarm.dev_attr.attr, + &sensor_dev_attr_in3_alarm.dev_attr.attr, + &sensor_dev_attr_in4_alarm.dev_attr.attr, + &sensor_dev_attr_in5_alarm.dev_attr.attr, + &sensor_dev_attr_in6_alarm.dev_attr.attr, + &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, + NULL +}; +ATTRIBUTE_GROUPS(adc128); + +static int adc128_detect(struct i2c_client *client, struct i2c_board_info *info) +{ + int man_id, dev_id; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_BYTE_DATA | + I2C_FUNC_SMBUS_WORD_DATA)) + return -ENODEV; + + man_id = i2c_smbus_read_byte_data(client, ADC128_REG_MAN_ID); + dev_id = i2c_smbus_read_byte_data(client, ADC128_REG_DEV_ID); + if (man_id != 0x01 || dev_id != 0x09) + return -ENODEV; + + /* Check unused bits for confirmation */ + if (i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG) & 0xf4) + return -ENODEV; + if (i2c_smbus_read_byte_data(client, ADC128_REG_CONV_RATE) & 0xfe) + return -ENODEV; + if (i2c_smbus_read_byte_data(client, ADC128_REG_ONESHOT) & 0xfe) + return -ENODEV; + if (i2c_smbus_read_byte_data(client, ADC128_REG_SHUTDOWN) & 0xfe) + return -ENODEV; + if (i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG_ADV) & 0xf8) + return -ENODEV; + if (i2c_smbus_read_byte_data(client, ADC128_REG_BUSY_STATUS) & 0xfc) + return -ENODEV; + + strlcpy(info->type, "adc128d818", I2C_NAME_SIZE); + + return 0; +} + +static int adc128_init_client(struct adc128_data *data) +{ + struct i2c_client *client = data->client; + int err; + + /* + * Reset chip to defaults. + * This makes most other initializations unnecessary. + */ + err = i2c_smbus_write_byte_data(client, ADC128_REG_CONFIG, 0x80); + if (err) + return err; + + /* Start monitoring */ + err = i2c_smbus_write_byte_data(client, ADC128_REG_CONFIG, 0x01); + if (err) + return err; + + /* If external vref is selected, configure the chip to use it */ + if (data->regulator) { + err = i2c_smbus_write_byte_data(client, + ADC128_REG_CONFIG_ADV, 0x01); + if (err) + return err; + } + + return 0; +} + +static int adc128_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct regulator *regulator; + struct device *hwmon_dev; + struct adc128_data *data; + int err, vref; + + data = devm_kzalloc(dev, sizeof(struct adc128_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + /* vref is optional. If specified, is used as chip reference voltage */ + regulator = devm_regulator_get_optional(dev, "vref"); + if (!IS_ERR(regulator)) { + data->regulator = regulator; + err = regulator_enable(regulator); + if (err < 0) + return err; + vref = regulator_get_voltage(regulator); + if (vref < 0) { + err = vref; + goto error; + } + data->vref = DIV_ROUND_CLOSEST(vref, 1000); + } else { + data->vref = 2560; /* 2.56V, in mV */ + } + + data->client = client; + i2c_set_clientdata(client, data); + mutex_init(&data->update_lock); + + /* Initialize the chip */ + err = adc128_init_client(data); + if (err < 0) + goto error; + + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, adc128_groups); + if (IS_ERR(hwmon_dev)) { + err = PTR_ERR(hwmon_dev); + goto error; + } + + return 0; + +error: + if (data->regulator) + regulator_disable(data->regulator); + return err; +} + +static int adc128_remove(struct i2c_client *client) +{ + struct adc128_data *data = i2c_get_clientdata(client); + + if (data->regulator) + regulator_disable(data->regulator); + + return 0; +} + +static const struct i2c_device_id adc128_id[] = { + { "adc128d818", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, adc128_id); + +static struct i2c_driver adc128_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "adc128d818", + }, + .probe = adc128_probe, + .remove = adc128_remove, + .id_table = adc128_id, + .detect = adc128_detect, + .address_list = normal_i2c, +}; + +module_i2c_driver(adc128_driver); + +MODULE_AUTHOR("Guenter Roeck"); +MODULE_DESCRIPTION("Driver for ADC128D818"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index bbb0b0d463f7..f31bc4c48644 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -94,6 +94,8 @@ struct temp_data { bool valid; struct sensor_device_attribute sd_attrs[TOTAL_ATTRS]; char attr_name[TOTAL_ATTRS][CORETEMP_NAME_LENGTH]; + struct attribute *attrs[TOTAL_ATTRS + 1]; + struct attribute_group attr_group; struct mutex update_lock; }; @@ -114,12 +116,6 @@ struct pdev_entry { static LIST_HEAD(pdev_list); static DEFINE_MUTEX(pdev_list_mutex); -static ssize_t show_name(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - return sprintf(buf, "%s\n", DRVNAME); -} - static ssize_t show_label(struct device *dev, struct device_attribute *devattr, char *buf) { @@ -393,20 +389,10 @@ static int get_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev) return adjust_tjmax(c, id, dev); } -static int create_name_attr(struct platform_data *pdata, - struct device *dev) -{ - sysfs_attr_init(&pdata->name_attr.attr); - pdata->name_attr.attr.name = "name"; - pdata->name_attr.attr.mode = S_IRUGO; - pdata->name_attr.show = show_name; - return device_create_file(dev, &pdata->name_attr); -} - static int create_core_attrs(struct temp_data *tdata, struct device *dev, int attr_no) { - int err, i; + int i; static ssize_t (*const rd_ptr[TOTAL_ATTRS]) (struct device *dev, struct device_attribute *devattr, char *buf) = { show_label, show_crit_alarm, show_temp, show_tjmax, @@ -424,16 +410,10 @@ static int create_core_attrs(struct temp_data *tdata, struct device *dev, tdata->sd_attrs[i].dev_attr.attr.mode = S_IRUGO; tdata->sd_attrs[i].dev_attr.show = rd_ptr[i]; tdata->sd_attrs[i].index = attr_no; - err = device_create_file(dev, &tdata->sd_attrs[i].dev_attr); - if (err) - goto exit_free; + tdata->attrs[i] = &tdata->sd_attrs[i].dev_attr.attr; } - return 0; - -exit_free: - while (--i >= 0) - device_remove_file(dev, &tdata->sd_attrs[i].dev_attr); - return err; + tdata->attr_group.attrs = tdata->attrs; + return sysfs_create_group(&dev->kobj, &tdata->attr_group); } @@ -548,7 +528,7 @@ static int create_core_data(struct platform_device *pdev, unsigned int cpu, pdata->core_data[attr_no] = tdata; /* Create sysfs interfaces */ - err = create_core_attrs(tdata, &pdev->dev, attr_no); + err = create_core_attrs(tdata, pdata->hwmon_dev, attr_no); if (err) goto exit_free; @@ -573,14 +553,12 @@ static void coretemp_add_core(unsigned int cpu, int pkg_flag) } static void coretemp_remove_core(struct platform_data *pdata, - struct device *dev, int indx) + int indx) { - int i; struct temp_data *tdata = pdata->core_data[indx]; /* Remove the sysfs attributes */ - for (i = 0; i < tdata->attr_size; i++) - device_remove_file(dev, &tdata->sd_attrs[i].dev_attr); + sysfs_remove_group(&pdata->hwmon_dev->kobj, &tdata->attr_group); kfree(pdata->core_data[indx]); pdata->core_data[indx] = NULL; @@ -588,34 +566,20 @@ static void coretemp_remove_core(struct platform_data *pdata, static int coretemp_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct platform_data *pdata; - int err; /* Initialize the per-package data structures */ - pdata = kzalloc(sizeof(struct platform_data), GFP_KERNEL); + pdata = devm_kzalloc(dev, sizeof(struct platform_data), GFP_KERNEL); if (!pdata) return -ENOMEM; - err = create_name_attr(pdata, &pdev->dev); - if (err) - goto exit_free; - pdata->phys_proc_id = pdev->id; platform_set_drvdata(pdev, pdata); - pdata->hwmon_dev = hwmon_device_register(&pdev->dev); - if (IS_ERR(pdata->hwmon_dev)) { - err = PTR_ERR(pdata->hwmon_dev); - dev_err(&pdev->dev, "Class registration failed (%d)\n", err); - goto exit_name; - } - return 0; - -exit_name: - device_remove_file(&pdev->dev, &pdata->name_attr); -exit_free: - kfree(pdata); - return err; + pdata->hwmon_dev = devm_hwmon_device_register_with_groups(dev, DRVNAME, + pdata, NULL); + return PTR_ERR_OR_ZERO(pdata->hwmon_dev); } static int coretemp_remove(struct platform_device *pdev) @@ -625,11 +589,8 @@ static int coretemp_remove(struct platform_device *pdev) for (i = MAX_CORE_DATA - 1; i >= 0; --i) if (pdata->core_data[i]) - coretemp_remove_core(pdata, &pdev->dev, i); + coretemp_remove_core(pdata, i); - device_remove_file(&pdev->dev, &pdata->name_attr); - hwmon_device_unregister(pdata->hwmon_dev); - kfree(pdata); return 0; } @@ -777,7 +738,7 @@ static void put_core_offline(unsigned int cpu) return; if (pdata->core_data[indx] && pdata->core_data[indx]->cpu == cpu) - coretemp_remove_core(pdata, &pdev->dev, indx); + coretemp_remove_core(pdata, indx); /* * If a HT sibling of a core is taken offline, but another HT sibling diff --git a/drivers/hwmon/emc2103.c b/drivers/hwmon/emc2103.c index 2c137b26acb4..fd892dd48e4c 100644 --- a/drivers/hwmon/emc2103.c +++ b/drivers/hwmon/emc2103.c @@ -349,7 +349,7 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *da, dev_dbg(&client->dev, "reg 0x%02x, err %d\n", REG_FAN_CONF1, status); mutex_unlock(&data->update_lock); - return -EIO; + return status; } status &= 0x9F; status |= (new_range_bits << 5); diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index e176a43af63d..a26c385a435b 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -22,6 +22,7 @@ #include <linux/gfp.h> #include <linux/spinlock.h> #include <linux/pci.h> +#include <linux/string.h> #define HWMON_ID_PREFIX "hwmon" #define HWMON_ID_FORMAT HWMON_ID_PREFIX "%d" @@ -99,6 +100,10 @@ hwmon_device_register_with_groups(struct device *dev, const char *name, struct hwmon_device *hwdev; int err, id; + /* Do not accept invalid characters in hwmon name attribute */ + if (name && (!strlen(name) || strpbrk(name, "-* \t\n"))) + return ERR_PTR(-EINVAL); + id = ida_simple_get(&hwmon_ida, 0, 0, GFP_KERNEL); if (id < 0) return ERR_PTR(id); diff --git a/drivers/hwmon/iio_hwmon.c b/drivers/hwmon/iio_hwmon.c index 708081b68c6f..9fbb1b1fdff3 100644 --- a/drivers/hwmon/iio_hwmon.c +++ b/drivers/hwmon/iio_hwmon.c @@ -31,6 +31,7 @@ struct iio_hwmon_state { int num_channels; struct device *hwmon_dev; struct attribute_group attr_group; + const struct attribute_group *groups[2]; struct attribute **attrs; }; @@ -56,19 +57,6 @@ static ssize_t iio_hwmon_read_val(struct device *dev, return sprintf(buf, "%d\n", result); } -static ssize_t show_name(struct device *dev, struct device_attribute *attr, - char *buf) -{ - const char *name = "iio_hwmon"; - - if (dev->of_node && dev->of_node->name) - name = dev->of_node->name; - - return sprintf(buf, "%s\n", name); -} - -static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); - static int iio_hwmon_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -78,6 +66,10 @@ static int iio_hwmon_probe(struct platform_device *pdev) int in_i = 1, temp_i = 1, curr_i = 1; enum iio_chan_type type; struct iio_channel *channels; + const char *name = "iio_hwmon"; + + if (dev->of_node && dev->of_node->name) + name = dev->of_node->name; channels = iio_channel_get_all(dev); if (IS_ERR(channels)) @@ -96,7 +88,7 @@ static int iio_hwmon_probe(struct platform_device *pdev) st->num_channels++; st->attrs = devm_kzalloc(dev, - sizeof(*st->attrs) * (st->num_channels + 2), + sizeof(*st->attrs) * (st->num_channels + 1), GFP_KERNEL); if (st->attrs == NULL) { ret = -ENOMEM; @@ -144,22 +136,18 @@ static int iio_hwmon_probe(struct platform_device *pdev) a->index = i; st->attrs[i] = &a->dev_attr.attr; } - st->attrs[st->num_channels] = &dev_attr_name.attr; - st->attr_group.attrs = st->attrs; - platform_set_drvdata(pdev, st); - ret = sysfs_create_group(&dev->kobj, &st->attr_group); - if (ret < 0) - goto error_release_channels; - st->hwmon_dev = hwmon_device_register(dev); + st->attr_group.attrs = st->attrs; + st->groups[0] = &st->attr_group; + st->hwmon_dev = hwmon_device_register_with_groups(dev, name, st, + st->groups); if (IS_ERR(st->hwmon_dev)) { ret = PTR_ERR(st->hwmon_dev); - goto error_remove_group; + goto error_release_channels; } + platform_set_drvdata(pdev, st); return 0; -error_remove_group: - sysfs_remove_group(&dev->kobj, &st->attr_group); error_release_channels: iio_channel_release_all(channels); return ret; @@ -170,7 +158,6 @@ static int iio_hwmon_remove(struct platform_device *pdev) struct iio_hwmon_state *st = platform_get_drvdata(pdev); hwmon_device_unregister(st->hwmon_dev); - sysfs_remove_group(&pdev->dev.kobj, &st->attr_group); iio_channel_release_all(st->channels); return 0; diff --git a/drivers/hwmon/jz4740-hwmon.c b/drivers/hwmon/jz4740-hwmon.c index a183e488db78..7488e36809c8 100644 --- a/drivers/hwmon/jz4740-hwmon.c +++ b/drivers/hwmon/jz4740-hwmon.c @@ -28,7 +28,6 @@ #include <linux/hwmon.h> struct jz4740_hwmon { - struct resource *mem; void __iomem *base; int irq; @@ -106,6 +105,7 @@ static int jz4740_hwmon_probe(struct platform_device *pdev) { int ret; struct jz4740_hwmon *hwmon; + struct resource *mem; hwmon = devm_kzalloc(&pdev->dev, sizeof(*hwmon), GFP_KERNEL); if (!hwmon) @@ -120,25 +120,10 @@ static int jz4740_hwmon_probe(struct platform_device *pdev) return hwmon->irq; } - hwmon->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!hwmon->mem) { - dev_err(&pdev->dev, "Failed to get platform mmio resource\n"); - return -ENOENT; - } - - hwmon->mem = devm_request_mem_region(&pdev->dev, hwmon->mem->start, - resource_size(hwmon->mem), pdev->name); - if (!hwmon->mem) { - dev_err(&pdev->dev, "Failed to request mmio memory region\n"); - return -EBUSY; - } - - hwmon->base = devm_ioremap_nocache(&pdev->dev, hwmon->mem->start, - resource_size(hwmon->mem)); - if (!hwmon->base) { - dev_err(&pdev->dev, "Failed to ioremap mmio memory\n"); - return -EBUSY; - } + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + hwmon->base = devm_ioremap_resource(&pdev->dev, mem); + if (IS_ERR(hwmon->base)) + return PTR_ERR(hwmon->base); init_completion(&hwmon->read_completion); mutex_init(&hwmon->lock); diff --git a/drivers/hwmon/lm95241.c b/drivers/hwmon/lm95241.c index 4b68fb2a31d7..cdf19adaec79 100644 --- a/drivers/hwmon/lm95241.c +++ b/drivers/hwmon/lm95241.c @@ -89,7 +89,7 @@ static const u8 lm95241_reg_address[] = { /* Client data (each client gets its own) */ struct lm95241_data { - struct device *hwmon_dev; + struct i2c_client *client; struct mutex update_lock; unsigned long last_updated, interval; /* in jiffies */ char valid; /* zero until following fields are valid */ @@ -113,8 +113,8 @@ static int temp_from_reg_unsigned(u8 val_h, u8 val_l) static struct lm95241_data *lm95241_update_device(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95241_data *data = i2c_get_clientdata(client); + struct lm95241_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; mutex_lock(&data->update_lock); @@ -122,7 +122,7 @@ static struct lm95241_data *lm95241_update_device(struct device *dev) !data->valid) { int i; - dev_dbg(&client->dev, "Updating lm95241 data.\n"); + dev_dbg(dev, "Updating lm95241 data.\n"); for (i = 0; i < ARRAY_SIZE(lm95241_reg_address); i++) data->temp[i] = i2c_smbus_read_byte_data(client, @@ -153,8 +153,7 @@ static ssize_t show_input(struct device *dev, struct device_attribute *attr, static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95241_data *data = i2c_get_clientdata(client); + struct lm95241_data *data = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE - 1, data->model & to_sensor_dev_attr(attr)->index ? "1\n" : "2\n"); @@ -163,8 +162,8 @@ static ssize_t show_type(struct device *dev, struct device_attribute *attr, static ssize_t set_type(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95241_data *data = i2c_get_clientdata(client); + struct lm95241_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; unsigned long val; int shift; u8 mask = to_sensor_dev_attr(attr)->index; @@ -201,8 +200,7 @@ static ssize_t set_type(struct device *dev, struct device_attribute *attr, static ssize_t show_min(struct device *dev, struct device_attribute *attr, char *buf) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95241_data *data = i2c_get_clientdata(client); + struct lm95241_data *data = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE - 1, data->config & to_sensor_dev_attr(attr)->index ? @@ -212,8 +210,7 @@ static ssize_t show_min(struct device *dev, struct device_attribute *attr, static ssize_t set_min(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95241_data *data = i2c_get_clientdata(client); + struct lm95241_data *data = dev_get_drvdata(dev); long val; if (kstrtol(buf, 10, &val) < 0) @@ -229,7 +226,8 @@ static ssize_t set_min(struct device *dev, struct device_attribute *attr, data->config &= ~to_sensor_dev_attr(attr)->index; data->valid = 0; - i2c_smbus_write_byte_data(client, LM95241_REG_RW_CONFIG, data->config); + i2c_smbus_write_byte_data(data->client, LM95241_REG_RW_CONFIG, + data->config); mutex_unlock(&data->update_lock); @@ -239,8 +237,7 @@ static ssize_t set_min(struct device *dev, struct device_attribute *attr, static ssize_t show_max(struct device *dev, struct device_attribute *attr, char *buf) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95241_data *data = i2c_get_clientdata(client); + struct lm95241_data *data = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE - 1, data->config & to_sensor_dev_attr(attr)->index ? @@ -250,8 +247,7 @@ static ssize_t show_max(struct device *dev, struct device_attribute *attr, static ssize_t set_max(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95241_data *data = i2c_get_clientdata(client); + struct lm95241_data *data = dev_get_drvdata(dev); long val; if (kstrtol(buf, 10, &val) < 0) @@ -267,7 +263,8 @@ static ssize_t set_max(struct device *dev, struct device_attribute *attr, data->config &= ~to_sensor_dev_attr(attr)->index; data->valid = 0; - i2c_smbus_write_byte_data(client, LM95241_REG_RW_CONFIG, data->config); + i2c_smbus_write_byte_data(data->client, LM95241_REG_RW_CONFIG, + data->config); mutex_unlock(&data->update_lock); @@ -286,8 +283,7 @@ static ssize_t show_interval(struct device *dev, struct device_attribute *attr, static ssize_t set_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95241_data *data = i2c_get_clientdata(client); + struct lm95241_data *data = dev_get_drvdata(dev); unsigned long val; if (kstrtoul(buf, 10, &val) < 0) @@ -316,7 +312,7 @@ static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_max, set_max, static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval, set_interval); -static struct attribute *lm95241_attributes[] = { +static struct attribute *lm95241_attrs[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp3_input.dev_attr.attr, @@ -329,10 +325,7 @@ static struct attribute *lm95241_attributes[] = { &dev_attr_update_interval.attr, NULL }; - -static const struct attribute_group lm95241_group = { - .attrs = lm95241_attributes, -}; +ATTRIBUTE_GROUPS(lm95241); /* Return 0 if detection is successful, -ENODEV otherwise */ static int lm95241_detect(struct i2c_client *new_client, @@ -366,14 +359,11 @@ static int lm95241_detect(struct i2c_client *new_client, return 0; } -static void lm95241_init_client(struct i2c_client *client) +static void lm95241_init_client(struct i2c_client *client, + struct lm95241_data *data) { - struct lm95241_data *data = i2c_get_clientdata(client); - data->interval = HZ; /* 1 sec default */ - data->valid = 0; data->config = CFG_CR0076; - data->model = 0; data->trutherm = (TT_OFF << TT1_SHIFT) | (TT_OFF << TT2_SHIFT); i2c_smbus_write_byte_data(client, LM95241_REG_RW_CONFIG, data->config); @@ -385,49 +375,27 @@ static void lm95241_init_client(struct i2c_client *client) data->model); } -static int lm95241_probe(struct i2c_client *new_client, +static int lm95241_probe(struct i2c_client *client, const struct i2c_device_id *id) { + struct device *dev = &client->dev; struct lm95241_data *data; - int err; + struct device *hwmon_dev; - data = devm_kzalloc(&new_client->dev, sizeof(struct lm95241_data), - GFP_KERNEL); + data = devm_kzalloc(dev, sizeof(struct lm95241_data), GFP_KERNEL); if (!data) return -ENOMEM; - i2c_set_clientdata(new_client, data); + data->client = client; mutex_init(&data->update_lock); /* Initialize the LM95241 chip */ - lm95241_init_client(new_client); + lm95241_init_client(client, data); - /* Register sysfs hooks */ - err = sysfs_create_group(&new_client->dev.kobj, &lm95241_group); - if (err) - return err; - - data->hwmon_dev = hwmon_device_register(&new_client->dev); - if (IS_ERR(data->hwmon_dev)) { - err = PTR_ERR(data->hwmon_dev); - goto exit_remove_files; - } - - return 0; - -exit_remove_files: - sysfs_remove_group(&new_client->dev.kobj, &lm95241_group); - return err; -} - -static int lm95241_remove(struct i2c_client *client) -{ - struct lm95241_data *data = i2c_get_clientdata(client); - - hwmon_device_unregister(data->hwmon_dev); - sysfs_remove_group(&client->dev.kobj, &lm95241_group); - - return 0; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, + lm95241_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); } /* Driver data (common to all clients) */ @@ -444,7 +412,6 @@ static struct i2c_driver lm95241_driver = { .name = DEVNAME, }, .probe = lm95241_probe, - .remove = lm95241_remove, .id_table = lm95241_id, .detect = lm95241_detect, .address_list = normal_i2c, diff --git a/drivers/hwmon/lm95245.c b/drivers/hwmon/lm95245.c index a6c85f0ff8f3..0ae0dfdafdff 100644 --- a/drivers/hwmon/lm95245.c +++ b/drivers/hwmon/lm95245.c @@ -115,7 +115,7 @@ static const u8 lm95245_reg_address[] = { /* Client data (each client gets its own) */ struct lm95245_data { - struct device *hwmon_dev; + struct i2c_client *client; struct mutex update_lock; unsigned long last_updated; /* in jiffies */ unsigned long interval; /* in msecs */ @@ -140,8 +140,8 @@ static int temp_from_reg_signed(u8 val_h, u8 val_l) static struct lm95245_data *lm95245_update_device(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95245_data *data = i2c_get_clientdata(client); + struct lm95245_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; mutex_lock(&data->update_lock); @@ -149,7 +149,6 @@ static struct lm95245_data *lm95245_update_device(struct device *dev) + msecs_to_jiffies(data->interval)) || !data->valid) { int i; - dev_dbg(&client->dev, "Updating lm95245 data.\n"); for (i = 0; i < ARRAY_SIZE(lm95245_reg_address); i++) data->regs[i] = i2c_smbus_read_byte_data(client, @@ -249,9 +248,9 @@ static ssize_t show_limit(struct device *dev, struct device_attribute *attr, static ssize_t set_limit(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95245_data *data = i2c_get_clientdata(client); + struct lm95245_data *data = dev_get_drvdata(dev); int index = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = data->client; unsigned long val; if (kstrtoul(buf, 10, &val) < 0) @@ -272,27 +271,38 @@ static ssize_t set_limit(struct device *dev, struct device_attribute *attr, return count; } +static ssize_t show_crit_hyst(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct lm95245_data *data = lm95245_update_device(dev); + int index = to_sensor_dev_attr(attr)->index; + int hyst = data->regs[index] - data->regs[8]; + + return snprintf(buf, PAGE_SIZE - 1, "%d\n", hyst * 1000); +} + static ssize_t set_crit_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95245_data *data = i2c_get_clientdata(client); + struct lm95245_data *data = dev_get_drvdata(dev); + int index = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = data->client; unsigned long val; + int hyst, limit; if (kstrtoul(buf, 10, &val) < 0) return -EINVAL; - val /= 1000; - - val = clamp_val(val, 0, 31); - mutex_lock(&data->update_lock); - data->valid = 0; + limit = i2c_smbus_read_byte_data(client, lm95245_reg_address[index]); + hyst = limit - val / 1000; + hyst = clamp_val(hyst, 0, 31); + data->regs[8] = hyst; /* shared crit hysteresis */ i2c_smbus_write_byte_data(client, LM95245_REG_RW_COMMON_HYSTERESIS, - val); + hyst); mutex_unlock(&data->update_lock); @@ -302,8 +312,7 @@ static ssize_t set_crit_hyst(struct device *dev, struct device_attribute *attr, static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95245_data *data = i2c_get_clientdata(client); + struct lm95245_data *data = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE - 1, data->config2 & CFG2_REMOTE_TT ? "1\n" : "2\n"); @@ -312,8 +321,8 @@ static ssize_t show_type(struct device *dev, struct device_attribute *attr, static ssize_t set_type(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95245_data *data = i2c_get_clientdata(client); + struct lm95245_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; unsigned long val; if (kstrtoul(buf, 10, &val) < 0) @@ -359,8 +368,8 @@ static ssize_t show_interval(struct device *dev, struct device_attribute *attr, static ssize_t set_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct lm95245_data *data = i2c_get_clientdata(client); + struct lm95245_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; unsigned long val; if (kstrtoul(buf, 10, &val) < 0) @@ -378,16 +387,15 @@ static ssize_t set_interval(struct device *dev, struct device_attribute *attr, static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_input, NULL, 0); static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_limit, set_limit, 6); -static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_limit, - set_crit_hyst, 8); +static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_crit_hyst, + set_crit_hyst, 6); static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, STATUS1_LOC); static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_input, NULL, 2); static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_limit, set_limit, 7); -static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_limit, - set_crit_hyst, 8); +static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_crit_hyst, NULL, 7); static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, STATUS1_RTCRIT); static SENSOR_DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type, @@ -398,7 +406,7 @@ static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval, set_interval); -static struct attribute *lm95245_attributes[] = { +static struct attribute *lm95245_attrs[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_crit.dev_attr.attr, &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, @@ -412,10 +420,7 @@ static struct attribute *lm95245_attributes[] = { &dev_attr_update_interval.attr, NULL }; - -static const struct attribute_group lm95245_group = { - .attrs = lm95245_attributes, -}; +ATTRIBUTE_GROUPS(lm95245); /* Return 0 if detection is successful, -ENODEV otherwise */ static int lm95245_detect(struct i2c_client *new_client, @@ -436,11 +441,9 @@ static int lm95245_detect(struct i2c_client *new_client, return 0; } -static void lm95245_init_client(struct i2c_client *client) +static void lm95245_init_client(struct i2c_client *client, + struct lm95245_data *data) { - struct lm95245_data *data = i2c_get_clientdata(client); - - data->valid = 0; data->interval = lm95245_read_conversion_rate(client); data->config1 = i2c_smbus_read_byte_data(client, @@ -456,49 +459,27 @@ static void lm95245_init_client(struct i2c_client *client) } } -static int lm95245_probe(struct i2c_client *new_client, +static int lm95245_probe(struct i2c_client *client, const struct i2c_device_id *id) { + struct device *dev = &client->dev; struct lm95245_data *data; - int err; + struct device *hwmon_dev; - data = devm_kzalloc(&new_client->dev, sizeof(struct lm95245_data), - GFP_KERNEL); + data = devm_kzalloc(dev, sizeof(struct lm95245_data), GFP_KERNEL); if (!data) return -ENOMEM; - i2c_set_clientdata(new_client, data); + data->client = client; mutex_init(&data->update_lock); /* Initialize the LM95245 chip */ - lm95245_init_client(new_client); - - /* Register sysfs hooks */ - err = sysfs_create_group(&new_client->dev.kobj, &lm95245_group); - if (err) - return err; - - data->hwmon_dev = hwmon_device_register(&new_client->dev); - if (IS_ERR(data->hwmon_dev)) { - err = PTR_ERR(data->hwmon_dev); - goto exit_remove_files; - } - - return 0; - -exit_remove_files: - sysfs_remove_group(&new_client->dev.kobj, &lm95245_group); - return err; -} + lm95245_init_client(client, data); -static int lm95245_remove(struct i2c_client *client) -{ - struct lm95245_data *data = i2c_get_clientdata(client); - - hwmon_device_unregister(data->hwmon_dev); - sysfs_remove_group(&client->dev.kobj, &lm95245_group); - - return 0; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, + lm95245_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); } /* Driver data (common to all clients) */ @@ -514,7 +495,6 @@ static struct i2c_driver lm95245_driver = { .name = DEVNAME, }, .probe = lm95245_probe, - .remove = lm95245_remove, .id_table = lm95245_id, .detect = lm95245_detect, .address_list = normal_i2c, diff --git a/drivers/hwmon/ltc2945.c b/drivers/hwmon/ltc2945.c new file mode 100644 index 000000000000..c104cc32989d --- /dev/null +++ b/drivers/hwmon/ltc2945.c @@ -0,0 +1,519 @@ +/* + * Driver for Linear Technology LTC2945 I2C Power Monitor + * + * Copyright (c) 2014 Guenter Roeck + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/jiffies.h> +#include <linux/regmap.h> + +/* chip registers */ +#define LTC2945_CONTROL 0x00 +#define LTC2945_ALERT 0x01 +#define LTC2945_STATUS 0x02 +#define LTC2945_FAULT 0x03 +#define LTC2945_POWER_H 0x05 +#define LTC2945_MAX_POWER_H 0x08 +#define LTC2945_MIN_POWER_H 0x0b +#define LTC2945_MAX_POWER_THRES_H 0x0e +#define LTC2945_MIN_POWER_THRES_H 0x11 +#define LTC2945_SENSE_H 0x14 +#define LTC2945_MAX_SENSE_H 0x16 +#define LTC2945_MIN_SENSE_H 0x18 +#define LTC2945_MAX_SENSE_THRES_H 0x1a +#define LTC2945_MIN_SENSE_THRES_H 0x1c +#define LTC2945_VIN_H 0x1e +#define LTC2945_MAX_VIN_H 0x20 +#define LTC2945_MIN_VIN_H 0x22 +#define LTC2945_MAX_VIN_THRES_H 0x24 +#define LTC2945_MIN_VIN_THRES_H 0x26 +#define LTC2945_ADIN_H 0x28 +#define LTC2945_MAX_ADIN_H 0x2a +#define LTC2945_MIN_ADIN_H 0x2c +#define LTC2945_MAX_ADIN_THRES_H 0x2e +#define LTC2945_MIN_ADIN_THRES_H 0x30 +#define LTC2945_MIN_ADIN_THRES_L 0x31 + +/* Fault register bits */ + +#define FAULT_ADIN_UV (1 << 0) +#define FAULT_ADIN_OV (1 << 1) +#define FAULT_VIN_UV (1 << 2) +#define FAULT_VIN_OV (1 << 3) +#define FAULT_SENSE_UV (1 << 4) +#define FAULT_SENSE_OV (1 << 5) +#define FAULT_POWER_UV (1 << 6) +#define FAULT_POWER_OV (1 << 7) + +/* Control register bits */ + +#define CONTROL_MULT_SELECT (1 << 0) +#define CONTROL_TEST_MODE (1 << 4) + +static inline bool is_power_reg(u8 reg) +{ + return reg < LTC2945_SENSE_H; +} + +/* Return the value from the given register in uW, mV, or mA */ +static long long ltc2945_reg_to_val(struct device *dev, u8 reg) +{ + struct regmap *regmap = dev_get_drvdata(dev); + unsigned int control; + u8 buf[3]; + long long val; + int ret; + + ret = regmap_bulk_read(regmap, reg, buf, + is_power_reg(reg) ? 3 : 2); + if (ret < 0) + return ret; + + if (is_power_reg(reg)) { + /* power */ + val = (buf[0] << 16) + (buf[1] << 8) + buf[2]; + } else { + /* current, voltage */ + val = (buf[0] << 4) + (buf[1] >> 4); + } + + switch (reg) { + case LTC2945_POWER_H: + case LTC2945_MAX_POWER_H: + case LTC2945_MIN_POWER_H: + case LTC2945_MAX_POWER_THRES_H: + case LTC2945_MIN_POWER_THRES_H: + /* + * Convert to uW by assuming current is measured with + * an 1mOhm sense resistor, similar to current + * measurements. + * Control register bit 0 selects if voltage at SENSE+/VDD + * or voltage at ADIN is used to measure power. + */ + ret = regmap_read(regmap, LTC2945_CONTROL, &control); + if (ret < 0) + return ret; + if (control & CONTROL_MULT_SELECT) { + /* 25 mV * 25 uV = 0.625 uV resolution. */ + val *= 625LL; + } else { + /* 0.5 mV * 25 uV = 0.0125 uV resolution. */ + val = (val * 25LL) >> 1; + } + break; + case LTC2945_VIN_H: + case LTC2945_MAX_VIN_H: + case LTC2945_MIN_VIN_H: + case LTC2945_MAX_VIN_THRES_H: + case LTC2945_MIN_VIN_THRES_H: + /* 25 mV resolution. Convert to mV. */ + val *= 25; + break; + case LTC2945_ADIN_H: + case LTC2945_MAX_ADIN_H: + case LTC2945_MIN_ADIN_THRES_H: + case LTC2945_MAX_ADIN_THRES_H: + case LTC2945_MIN_ADIN_H: + /* 0.5mV resolution. Convert to mV. */ + val = val >> 1; + break; + case LTC2945_SENSE_H: + case LTC2945_MAX_SENSE_H: + case LTC2945_MIN_SENSE_H: + case LTC2945_MAX_SENSE_THRES_H: + case LTC2945_MIN_SENSE_THRES_H: + /* + * 25 uV resolution. Convert to current as measured with + * an 1 mOhm sense resistor, in mA. If a different sense + * resistor is installed, calculate the actual current by + * dividing the reported current by the sense resistor value + * in mOhm. + */ + val *= 25; + break; + default: + return -EINVAL; + } + return val; +} + +static int ltc2945_val_to_reg(struct device *dev, u8 reg, + unsigned long val) +{ + struct regmap *regmap = dev_get_drvdata(dev); + unsigned int control; + int ret; + + switch (reg) { + case LTC2945_POWER_H: + case LTC2945_MAX_POWER_H: + case LTC2945_MIN_POWER_H: + case LTC2945_MAX_POWER_THRES_H: + case LTC2945_MIN_POWER_THRES_H: + /* + * Convert to register value by assuming current is measured + * with an 1mOhm sense resistor, similar to current + * measurements. + * Control register bit 0 selects if voltage at SENSE+/VDD + * or voltage at ADIN is used to measure power, which in turn + * determines register calculations. + */ + ret = regmap_read(regmap, LTC2945_CONTROL, &control); + if (ret < 0) + return ret; + if (control & CONTROL_MULT_SELECT) { + /* 25 mV * 25 uV = 0.625 uV resolution. */ + val = DIV_ROUND_CLOSEST(val, 625); + } else { + /* + * 0.5 mV * 25 uV = 0.0125 uV resolution. + * Divide first to avoid overflow; + * accept loss of accuracy. + */ + val = DIV_ROUND_CLOSEST(val, 25) * 2; + } + break; + case LTC2945_VIN_H: + case LTC2945_MAX_VIN_H: + case LTC2945_MIN_VIN_H: + case LTC2945_MAX_VIN_THRES_H: + case LTC2945_MIN_VIN_THRES_H: + /* 25 mV resolution. */ + val /= 25; + break; + case LTC2945_ADIN_H: + case LTC2945_MAX_ADIN_H: + case LTC2945_MIN_ADIN_THRES_H: + case LTC2945_MAX_ADIN_THRES_H: + case LTC2945_MIN_ADIN_H: + /* 0.5mV resolution. */ + val *= 2; + break; + case LTC2945_SENSE_H: + case LTC2945_MAX_SENSE_H: + case LTC2945_MIN_SENSE_H: + case LTC2945_MAX_SENSE_THRES_H: + case LTC2945_MIN_SENSE_THRES_H: + /* + * 25 uV resolution. Convert to current as measured with + * an 1 mOhm sense resistor, in mA. If a different sense + * resistor is installed, calculate the actual current by + * dividing the reported current by the sense resistor value + * in mOhm. + */ + val = DIV_ROUND_CLOSEST(val, 25); + break; + default: + return -EINVAL; + } + return val; +} + +static ssize_t ltc2945_show_value(struct device *dev, + struct device_attribute *da, char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + long long value; + + value = ltc2945_reg_to_val(dev, attr->index); + if (value < 0) + return value; + return snprintf(buf, PAGE_SIZE, "%lld\n", value); +} + +static ssize_t ltc2945_set_value(struct device *dev, + struct device_attribute *da, + const char *buf, size_t count) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + struct regmap *regmap = dev_get_drvdata(dev); + u8 reg = attr->index; + unsigned long val; + u8 regbuf[3]; + int num_regs; + int regval; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + /* convert to register value, then clamp and write result */ + regval = ltc2945_val_to_reg(dev, reg, val); + if (is_power_reg(reg)) { + regval = clamp_val(regval, 0, 0xffffff); + regbuf[0] = regval >> 16; + regbuf[1] = (regval >> 8) & 0xff; + regbuf[2] = regval; + num_regs = 3; + } else { + regval = clamp_val(regval, 0, 0xfff) << 4; + regbuf[0] = regval >> 8; + regbuf[1] = regval & 0xff; + num_regs = 2; + } + ret = regmap_bulk_write(regmap, reg, regbuf, num_regs); + return ret < 0 ? ret : count; +} + +static ssize_t ltc2945_reset_history(struct device *dev, + struct device_attribute *da, + const char *buf, size_t count) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + struct regmap *regmap = dev_get_drvdata(dev); + u8 reg = attr->index; + int num_regs = is_power_reg(reg) ? 3 : 2; + u8 buf_min[3] = { 0xff, 0xff, 0xff }; + u8 buf_max[3] = { 0, 0, 0 }; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val != 1) + return -EINVAL; + + ret = regmap_update_bits(regmap, LTC2945_CONTROL, CONTROL_TEST_MODE, + CONTROL_TEST_MODE); + + /* Reset minimum */ + ret = regmap_bulk_write(regmap, reg, buf_min, num_regs); + if (ret) + return ret; + + switch (reg) { + case LTC2945_MIN_POWER_H: + reg = LTC2945_MAX_POWER_H; + break; + case LTC2945_MIN_SENSE_H: + reg = LTC2945_MAX_SENSE_H; + break; + case LTC2945_MIN_VIN_H: + reg = LTC2945_MAX_VIN_H; + break; + case LTC2945_MIN_ADIN_H: + reg = LTC2945_MAX_ADIN_H; + break; + default: + BUG(); + break; + } + /* Reset maximum */ + ret = regmap_bulk_write(regmap, reg, buf_max, num_regs); + + /* Try resetting test mode even if there was an error */ + regmap_update_bits(regmap, LTC2945_CONTROL, CONTROL_TEST_MODE, 0); + + return ret ? : count; +} + +static ssize_t ltc2945_show_bool(struct device *dev, + struct device_attribute *da, char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + struct regmap *regmap = dev_get_drvdata(dev); + unsigned int fault; + int ret; + + ret = regmap_read(regmap, LTC2945_FAULT, &fault); + if (ret < 0) + return ret; + + fault &= attr->index; + if (fault) /* Clear reported faults in chip register */ + regmap_update_bits(regmap, LTC2945_FAULT, attr->index, 0); + + return snprintf(buf, PAGE_SIZE, "%d\n", !!fault); +} + +/* Input voltages */ + +static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_VIN_H); +static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR, ltc2945_show_value, + ltc2945_set_value, LTC2945_MIN_VIN_THRES_H); +static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR, ltc2945_show_value, + ltc2945_set_value, LTC2945_MAX_VIN_THRES_H); +static SENSOR_DEVICE_ATTR(in1_lowest, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_MIN_VIN_H); +static SENSOR_DEVICE_ATTR(in1_highest, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_MAX_VIN_H); +static SENSOR_DEVICE_ATTR(in1_reset_history, S_IWUSR, NULL, + ltc2945_reset_history, LTC2945_MIN_VIN_H); + +static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_ADIN_H); +static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR, ltc2945_show_value, + ltc2945_set_value, LTC2945_MIN_ADIN_THRES_H); +static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR, ltc2945_show_value, + ltc2945_set_value, LTC2945_MAX_ADIN_THRES_H); +static SENSOR_DEVICE_ATTR(in2_lowest, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_MIN_ADIN_H); +static SENSOR_DEVICE_ATTR(in2_highest, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_MAX_ADIN_H); +static SENSOR_DEVICE_ATTR(in2_reset_history, S_IWUSR, NULL, + ltc2945_reset_history, LTC2945_MIN_ADIN_H); + +/* Voltage alarms */ + +static SENSOR_DEVICE_ATTR(in1_min_alarm, S_IRUGO, ltc2945_show_bool, NULL, + FAULT_VIN_UV); +static SENSOR_DEVICE_ATTR(in1_max_alarm, S_IRUGO, ltc2945_show_bool, NULL, + FAULT_VIN_OV); +static SENSOR_DEVICE_ATTR(in2_min_alarm, S_IRUGO, ltc2945_show_bool, NULL, + FAULT_ADIN_UV); +static SENSOR_DEVICE_ATTR(in2_max_alarm, S_IRUGO, ltc2945_show_bool, NULL, + FAULT_ADIN_OV); + +/* Currents (via sense resistor) */ + +static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_SENSE_H); +static SENSOR_DEVICE_ATTR(curr1_min, S_IRUGO | S_IWUSR, ltc2945_show_value, + ltc2945_set_value, LTC2945_MIN_SENSE_THRES_H); +static SENSOR_DEVICE_ATTR(curr1_max, S_IRUGO | S_IWUSR, ltc2945_show_value, + ltc2945_set_value, LTC2945_MAX_SENSE_THRES_H); +static SENSOR_DEVICE_ATTR(curr1_lowest, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_MIN_SENSE_H); +static SENSOR_DEVICE_ATTR(curr1_highest, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_MAX_SENSE_H); +static SENSOR_DEVICE_ATTR(curr1_reset_history, S_IWUSR, NULL, + ltc2945_reset_history, LTC2945_MIN_SENSE_H); + +/* Current alarms */ + +static SENSOR_DEVICE_ATTR(curr1_min_alarm, S_IRUGO, ltc2945_show_bool, NULL, + FAULT_SENSE_UV); +static SENSOR_DEVICE_ATTR(curr1_max_alarm, S_IRUGO, ltc2945_show_bool, NULL, + FAULT_SENSE_OV); + +/* Power */ + +static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, ltc2945_show_value, NULL, + LTC2945_POWER_H); +static SENSOR_DEVICE_ATTR(power1_min, S_IRUGO | S_IWUSR, ltc2945_show_value, + ltc2945_set_value, LTC2945_MIN_POWER_THRES_H); +static SENSOR_DEVICE_ATTR(power1_max, S_IRUGO | S_IWUSR, ltc2945_show_value, + ltc2945_set_value, LTC2945_MAX_POWER_THRES_H); +static SENSOR_DEVICE_ATTR(power1_input_lowest, S_IRUGO, ltc2945_show_value, + NULL, LTC2945_MIN_POWER_H); +static SENSOR_DEVICE_ATTR(power1_input_highest, S_IRUGO, ltc2945_show_value, + NULL, LTC2945_MAX_POWER_H); +static SENSOR_DEVICE_ATTR(power1_reset_history, S_IWUSR, NULL, + ltc2945_reset_history, LTC2945_MIN_POWER_H); + +/* Power alarms */ + +static SENSOR_DEVICE_ATTR(power1_min_alarm, S_IRUGO, ltc2945_show_bool, NULL, + FAULT_POWER_UV); +static SENSOR_DEVICE_ATTR(power1_max_alarm, S_IRUGO, ltc2945_show_bool, NULL, + FAULT_POWER_OV); + +static struct attribute *ltc2945_attrs[] = { + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in1_lowest.dev_attr.attr, + &sensor_dev_attr_in1_highest.dev_attr.attr, + &sensor_dev_attr_in1_reset_history.dev_attr.attr, + &sensor_dev_attr_in1_min_alarm.dev_attr.attr, + &sensor_dev_attr_in1_max_alarm.dev_attr.attr, + + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in2_lowest.dev_attr.attr, + &sensor_dev_attr_in2_highest.dev_attr.attr, + &sensor_dev_attr_in2_reset_history.dev_attr.attr, + &sensor_dev_attr_in2_min_alarm.dev_attr.attr, + &sensor_dev_attr_in2_max_alarm.dev_attr.attr, + + &sensor_dev_attr_curr1_input.dev_attr.attr, + &sensor_dev_attr_curr1_min.dev_attr.attr, + &sensor_dev_attr_curr1_max.dev_attr.attr, + &sensor_dev_attr_curr1_lowest.dev_attr.attr, + &sensor_dev_attr_curr1_highest.dev_attr.attr, + &sensor_dev_attr_curr1_reset_history.dev_attr.attr, + &sensor_dev_attr_curr1_min_alarm.dev_attr.attr, + &sensor_dev_attr_curr1_max_alarm.dev_attr.attr, + + &sensor_dev_attr_power1_input.dev_attr.attr, + &sensor_dev_attr_power1_min.dev_attr.attr, + &sensor_dev_attr_power1_max.dev_attr.attr, + &sensor_dev_attr_power1_input_lowest.dev_attr.attr, + &sensor_dev_attr_power1_input_highest.dev_attr.attr, + &sensor_dev_attr_power1_reset_history.dev_attr.attr, + &sensor_dev_attr_power1_min_alarm.dev_attr.attr, + &sensor_dev_attr_power1_max_alarm.dev_attr.attr, + + NULL, +}; +ATTRIBUTE_GROUPS(ltc2945); + +static struct regmap_config ltc2945_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = LTC2945_MIN_ADIN_THRES_L, +}; + +static int ltc2945_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct device *hwmon_dev; + struct regmap *regmap; + + regmap = devm_regmap_init_i2c(client, <c2945_regmap_config); + if (IS_ERR(regmap)) { + dev_err(dev, "failed to allocate register map\n"); + return PTR_ERR(regmap); + } + + /* Clear faults */ + regmap_write(regmap, LTC2945_FAULT, 0x00); + + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + regmap, + ltc2945_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id ltc2945_id[] = { + {"ltc2945", 0}, + { } +}; + +MODULE_DEVICE_TABLE(i2c, ltc2945_id); + +static struct i2c_driver ltc2945_driver = { + .driver = { + .name = "ltc2945", + }, + .probe = ltc2945_probe, + .id_table = ltc2945_id, +}; + +module_i2c_driver(ltc2945_driver); + +MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>"); +MODULE_DESCRIPTION("LTC2945 driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/ltc4215.c b/drivers/hwmon/ltc4215.c index 8a142960d69e..c8a9bd9b050f 100644 --- a/drivers/hwmon/ltc4215.c +++ b/drivers/hwmon/ltc4215.c @@ -33,7 +33,7 @@ enum ltc4215_cmd { }; struct ltc4215_data { - struct device *hwmon_dev; + struct i2c_client *client; struct mutex update_lock; bool valid; @@ -45,8 +45,8 @@ struct ltc4215_data { static struct ltc4215_data *ltc4215_update_device(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct ltc4215_data *data = i2c_get_clientdata(client); + struct ltc4215_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; s32 val; int i; @@ -214,7 +214,7 @@ static SENSOR_DEVICE_ATTR(in2_min_alarm, S_IRUGO, ltc4215_show_alarm, NULL, * Finally, construct an array of pointers to members of the above objects, * as required for sysfs_create_group() */ -static struct attribute *ltc4215_attributes[] = { +static struct attribute *ltc4215_attrs[] = { &sensor_dev_attr_curr1_input.dev_attr.attr, &sensor_dev_attr_curr1_max_alarm.dev_attr.attr, @@ -229,57 +229,33 @@ static struct attribute *ltc4215_attributes[] = { NULL, }; - -static const struct attribute_group ltc4215_group = { - .attrs = ltc4215_attributes, -}; +ATTRIBUTE_GROUPS(ltc4215); static int ltc4215_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_adapter *adapter = client->adapter; + struct device *dev = &client->dev; struct ltc4215_data *data; - int ret; + struct device *hwmon_dev; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -ENODEV; - data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; - i2c_set_clientdata(client, data); + data->client = client; mutex_init(&data->update_lock); /* Initialize the LTC4215 chip */ i2c_smbus_write_byte_data(client, LTC4215_FAULT, 0x00); - /* Register sysfs hooks */ - ret = sysfs_create_group(&client->dev.kobj, <c4215_group); - if (ret) - return ret; - - data->hwmon_dev = hwmon_device_register(&client->dev); - if (IS_ERR(data->hwmon_dev)) { - ret = PTR_ERR(data->hwmon_dev); - goto out_hwmon_device_register; - } - - return 0; - -out_hwmon_device_register: - sysfs_remove_group(&client->dev.kobj, <c4215_group); - return ret; -} - -static int ltc4215_remove(struct i2c_client *client) -{ - struct ltc4215_data *data = i2c_get_clientdata(client); - - hwmon_device_unregister(data->hwmon_dev); - sysfs_remove_group(&client->dev.kobj, <c4215_group); - - return 0; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, + ltc4215_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); } static const struct i2c_device_id ltc4215_id[] = { @@ -294,7 +270,6 @@ static struct i2c_driver ltc4215_driver = { .name = "ltc4215", }, .probe = ltc4215_probe, - .remove = ltc4215_remove, .id_table = ltc4215_id, }; diff --git a/drivers/hwmon/ltc4222.c b/drivers/hwmon/ltc4222.c new file mode 100644 index 000000000000..07c25653659f --- /dev/null +++ b/drivers/hwmon/ltc4222.c @@ -0,0 +1,237 @@ +/* + * Driver for Linear Technology LTC4222 Dual Hot Swap controller + * + * Copyright (c) 2014 Guenter Roeck + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/bitops.h> +#include <linux/i2c.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/jiffies.h> +#include <linux/regmap.h> + +/* chip registers */ + +#define LTC4222_CONTROL1 0xd0 +#define LTC4222_ALERT1 0xd1 +#define LTC4222_STATUS1 0xd2 +#define LTC4222_FAULT1 0xd3 +#define LTC4222_CONTROL2 0xd4 +#define LTC4222_ALERT2 0xd5 +#define LTC4222_STATUS2 0xd6 +#define LTC4222_FAULT2 0xd7 +#define LTC4222_SOURCE1 0xd8 +#define LTC4222_SOURCE2 0xda +#define LTC4222_ADIN1 0xdc +#define LTC4222_ADIN2 0xde +#define LTC4222_SENSE1 0xe0 +#define LTC4222_SENSE2 0xe2 +#define LTC4222_ADC_CONTROL 0xe4 + +/* + * Fault register bits + */ +#define FAULT_OV BIT(0) +#define FAULT_UV BIT(1) +#define FAULT_OC BIT(2) +#define FAULT_POWER_BAD BIT(3) +#define FAULT_FET_BAD BIT(5) + +/* Return the voltage from the given register in mV or mA */ +static int ltc4222_get_value(struct device *dev, u8 reg) +{ + struct regmap *regmap = dev_get_drvdata(dev); + unsigned int val; + u8 buf[2]; + int ret; + + ret = regmap_bulk_read(regmap, reg, buf, 2); + if (ret < 0) + return ret; + + val = ((buf[0] << 8) + buf[1]) >> 6; + + switch (reg) { + case LTC4222_ADIN1: + case LTC4222_ADIN2: + /* 1.25 mV resolution. Convert to mV. */ + val = DIV_ROUND_CLOSEST(val * 5, 4); + break; + case LTC4222_SOURCE1: + case LTC4222_SOURCE2: + /* 31.25 mV resolution. Convert to mV. */ + val = DIV_ROUND_CLOSEST(val * 125, 4); + break; + case LTC4222_SENSE1: + case LTC4222_SENSE2: + /* + * 62.5 uV resolution. Convert to current as measured with + * an 1 mOhm sense resistor, in mA. If a different sense + * resistor is installed, calculate the actual current by + * dividing the reported current by the sense resistor value + * in mOhm. + */ + val = DIV_ROUND_CLOSEST(val * 125, 2); + break; + default: + return -EINVAL; + } + return val; +} + +static ssize_t ltc4222_show_value(struct device *dev, + struct device_attribute *da, char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + int value; + + value = ltc4222_get_value(dev, attr->index); + if (value < 0) + return value; + return snprintf(buf, PAGE_SIZE, "%d\n", value); +} + +static ssize_t ltc4222_show_bool(struct device *dev, + struct device_attribute *da, char *buf) +{ + struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(da); + struct regmap *regmap = dev_get_drvdata(dev); + unsigned int fault; + int ret; + + ret = regmap_read(regmap, attr->nr, &fault); + if (ret < 0) + return ret; + fault &= attr->index; + if (fault) /* Clear reported faults in chip register */ + regmap_update_bits(regmap, attr->nr, attr->index, 0); + + return snprintf(buf, PAGE_SIZE, "%d\n", !!fault); +} + +/* Voltages */ +static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, ltc4222_show_value, NULL, + LTC4222_SOURCE1); +static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, ltc4222_show_value, NULL, + LTC4222_ADIN1); +static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, ltc4222_show_value, NULL, + LTC4222_SOURCE2); +static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, ltc4222_show_value, NULL, + LTC4222_ADIN2); + +/* + * Voltage alarms + * UV/OV faults are associated with the input voltage, and power bad and fet + * faults are associated with the output voltage. + */ +static SENSOR_DEVICE_ATTR_2(in1_min_alarm, S_IRUGO, ltc4222_show_bool, NULL, + LTC4222_FAULT1, FAULT_UV); +static SENSOR_DEVICE_ATTR_2(in1_max_alarm, S_IRUGO, ltc4222_show_bool, NULL, + LTC4222_FAULT1, FAULT_OV); +static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, ltc4222_show_bool, NULL, + LTC4222_FAULT1, FAULT_POWER_BAD | FAULT_FET_BAD); + +static SENSOR_DEVICE_ATTR_2(in3_min_alarm, S_IRUGO, ltc4222_show_bool, NULL, + LTC4222_FAULT2, FAULT_UV); +static SENSOR_DEVICE_ATTR_2(in3_max_alarm, S_IRUGO, ltc4222_show_bool, NULL, + LTC4222_FAULT2, FAULT_OV); +static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, ltc4222_show_bool, NULL, + LTC4222_FAULT2, FAULT_POWER_BAD | FAULT_FET_BAD); + +/* Current (via sense resistor) */ +static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ltc4222_show_value, NULL, + LTC4222_SENSE1); +static SENSOR_DEVICE_ATTR(curr2_input, S_IRUGO, ltc4222_show_value, NULL, + LTC4222_SENSE2); + +/* Overcurrent alarm */ +static SENSOR_DEVICE_ATTR_2(curr1_max_alarm, S_IRUGO, ltc4222_show_bool, NULL, + LTC4222_FAULT1, FAULT_OC); +static SENSOR_DEVICE_ATTR_2(curr2_max_alarm, S_IRUGO, ltc4222_show_bool, NULL, + LTC4222_FAULT2, FAULT_OC); + +static struct attribute *ltc4222_attrs[] = { + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_min_alarm.dev_attr.attr, + &sensor_dev_attr_in1_max_alarm.dev_attr.attr, + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_alarm.dev_attr.attr, + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in3_min_alarm.dev_attr.attr, + &sensor_dev_attr_in3_max_alarm.dev_attr.attr, + &sensor_dev_attr_in4_input.dev_attr.attr, + &sensor_dev_attr_in4_alarm.dev_attr.attr, + + &sensor_dev_attr_curr1_input.dev_attr.attr, + &sensor_dev_attr_curr1_max_alarm.dev_attr.attr, + &sensor_dev_attr_curr2_input.dev_attr.attr, + &sensor_dev_attr_curr2_max_alarm.dev_attr.attr, + + NULL, +}; +ATTRIBUTE_GROUPS(ltc4222); + +static struct regmap_config ltc4222_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = LTC4222_ADC_CONTROL, +}; + +static int ltc4222_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct device *hwmon_dev; + struct regmap *regmap; + + regmap = devm_regmap_init_i2c(client, <c4222_regmap_config); + if (IS_ERR(regmap)) { + dev_err(dev, "failed to allocate register map\n"); + return PTR_ERR(regmap); + } + + /* Clear faults */ + regmap_write(regmap, LTC4222_FAULT1, 0x00); + regmap_write(regmap, LTC4222_FAULT2, 0x00); + + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + regmap, + ltc4222_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id ltc4222_id[] = { + {"ltc4222", 0}, + { } +}; + +MODULE_DEVICE_TABLE(i2c, ltc4222_id); + +static struct i2c_driver ltc4222_driver = { + .driver = { + .name = "ltc4222", + }, + .probe = ltc4222_probe, + .id_table = ltc4222_id, +}; + +module_i2c_driver(ltc4222_driver); + +MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>"); +MODULE_DESCRIPTION("LTC4222 driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/ltc4245.c b/drivers/hwmon/ltc4245.c index d4172933ce4f..681b5b7b3c3b 100644 --- a/drivers/hwmon/ltc4245.c +++ b/drivers/hwmon/ltc4245.c @@ -95,7 +95,6 @@ static void ltc4245_update_gpios(struct device *dev) * readings as stale by setting them to -EAGAIN */ if (time_after(jiffies, data->last_updated + 5 * HZ)) { - dev_dbg(&client->dev, "Marking GPIOs invalid\n"); for (i = 0; i < ARRAY_SIZE(data->gpios); i++) data->gpios[i] = -EAGAIN; } @@ -141,8 +140,6 @@ static struct ltc4245_data *ltc4245_update_device(struct device *dev) if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { - dev_dbg(&client->dev, "Starting ltc4245 update\n"); - /* Read control registers -- 0x00 to 0x07 */ for (i = 0; i < ARRAY_SIZE(data->cregs); i++) { val = i2c_smbus_read_byte_data(client, i); @@ -470,19 +467,15 @@ static void ltc4245_sysfs_add_groups(struct ltc4245_data *data) static bool ltc4245_use_extra_gpios(struct i2c_client *client) { struct ltc4245_platform_data *pdata = dev_get_platdata(&client->dev); -#ifdef CONFIG_OF struct device_node *np = client->dev.of_node; -#endif /* prefer platform data */ if (pdata) return pdata->use_extra_gpios; -#ifdef CONFIG_OF /* fallback on OF */ if (of_find_property(np, "ltc4245,use-extra-gpios", NULL)) return true; -#endif return false; } @@ -512,24 +505,10 @@ static int ltc4245_probe(struct i2c_client *client, /* Add sysfs hooks */ ltc4245_sysfs_add_groups(data); - hwmon_dev = hwmon_device_register_with_groups(&client->dev, - client->name, data, - data->groups); - if (IS_ERR(hwmon_dev)) - return PTR_ERR(hwmon_dev); - - i2c_set_clientdata(client, hwmon_dev); - - return 0; -} - -static int ltc4245_remove(struct i2c_client *client) -{ - struct device *hwmon_dev = i2c_get_clientdata(client); - - hwmon_device_unregister(hwmon_dev); - - return 0; + hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev, + client->name, data, + data->groups); + return PTR_ERR_OR_ZERO(hwmon_dev); } static const struct i2c_device_id ltc4245_id[] = { @@ -544,7 +523,6 @@ static struct i2c_driver ltc4245_driver = { .name = "ltc4245", }, .probe = ltc4245_probe, - .remove = ltc4245_remove, .id_table = ltc4245_id, }; diff --git a/drivers/hwmon/ltc4260.c b/drivers/hwmon/ltc4260.c new file mode 100644 index 000000000000..453a250d9df5 --- /dev/null +++ b/drivers/hwmon/ltc4260.c @@ -0,0 +1,200 @@ +/* + * Driver for Linear Technology LTC4260 I2C Positive Voltage Hot Swap Controller + * + * Copyright (c) 2014 Guenter Roeck + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/jiffies.h> +#include <linux/regmap.h> + +/* chip registers */ +#define LTC4260_CONTROL 0x00 +#define LTC4260_ALERT 0x01 +#define LTC4260_STATUS 0x02 +#define LTC4260_FAULT 0x03 +#define LTC4260_SENSE 0x04 +#define LTC4260_SOURCE 0x05 +#define LTC4260_ADIN 0x06 + +/* + * Fault register bits + */ +#define FAULT_OV (1 << 0) +#define FAULT_UV (1 << 1) +#define FAULT_OC (1 << 2) +#define FAULT_POWER_BAD (1 << 3) +#define FAULT_FET_SHORT (1 << 5) + +/* Return the voltage from the given register in mV or mA */ +static int ltc4260_get_value(struct device *dev, u8 reg) +{ + struct regmap *regmap = dev_get_drvdata(dev); + unsigned int val; + int ret; + + ret = regmap_read(regmap, reg, &val); + if (ret < 0) + return ret; + + switch (reg) { + case LTC4260_ADIN: + /* 10 mV resolution. Convert to mV. */ + val = val * 10; + break; + case LTC4260_SOURCE: + /* 400 mV resolution. Convert to mV. */ + val = val * 400; + break; + case LTC4260_SENSE: + /* + * 300 uV resolution. Convert to current as measured with + * an 1 mOhm sense resistor, in mA. If a different sense + * resistor is installed, calculate the actual current by + * dividing the reported current by the sense resistor value + * in mOhm. + */ + val = val * 300; + break; + default: + return -EINVAL; + } + + return val; +} + +static ssize_t ltc4260_show_value(struct device *dev, + struct device_attribute *da, char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + int value; + + value = ltc4260_get_value(dev, attr->index); + if (value < 0) + return value; + return snprintf(buf, PAGE_SIZE, "%d\n", value); +} + +static ssize_t ltc4260_show_bool(struct device *dev, + struct device_attribute *da, char *buf) +{ + struct sensor_device_attribute *attr = to_sensor_dev_attr(da); + struct regmap *regmap = dev_get_drvdata(dev); + unsigned int fault; + int ret; + + ret = regmap_read(regmap, LTC4260_FAULT, &fault); + if (ret < 0) + return ret; + + fault &= attr->index; + if (fault) /* Clear reported faults in chip register */ + regmap_update_bits(regmap, LTC4260_FAULT, attr->index, 0); + + return snprintf(buf, PAGE_SIZE, "%d\n", !!fault); +} + +/* Voltages */ +static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, ltc4260_show_value, NULL, + LTC4260_SOURCE); +static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, ltc4260_show_value, NULL, + LTC4260_ADIN); + +/* + * Voltage alarms + * UV/OV faults are associated with the input voltage, and the POWER BAD and + * FET SHORT faults are associated with the output voltage. + */ +static SENSOR_DEVICE_ATTR(in1_min_alarm, S_IRUGO, ltc4260_show_bool, NULL, + FAULT_UV); +static SENSOR_DEVICE_ATTR(in1_max_alarm, S_IRUGO, ltc4260_show_bool, NULL, + FAULT_OV); +static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, ltc4260_show_bool, NULL, + FAULT_POWER_BAD | FAULT_FET_SHORT); + +/* Current (via sense resistor) */ +static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ltc4260_show_value, NULL, + LTC4260_SENSE); + +/* Overcurrent alarm */ +static SENSOR_DEVICE_ATTR(curr1_max_alarm, S_IRUGO, ltc4260_show_bool, NULL, + FAULT_OC); + +static struct attribute *ltc4260_attrs[] = { + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_min_alarm.dev_attr.attr, + &sensor_dev_attr_in1_max_alarm.dev_attr.attr, + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_alarm.dev_attr.attr, + + &sensor_dev_attr_curr1_input.dev_attr.attr, + &sensor_dev_attr_curr1_max_alarm.dev_attr.attr, + + NULL, +}; +ATTRIBUTE_GROUPS(ltc4260); + +static struct regmap_config ltc4260_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = LTC4260_ADIN, +}; + +static int ltc4260_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct device *hwmon_dev; + struct regmap *regmap; + + regmap = devm_regmap_init_i2c(client, <c4260_regmap_config); + if (IS_ERR(regmap)) { + dev_err(dev, "failed to allocate register map\n"); + return PTR_ERR(regmap); + } + + /* Clear faults */ + regmap_write(regmap, LTC4260_FAULT, 0x00); + + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + regmap, + ltc4260_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id ltc4260_id[] = { + {"ltc4260", 0}, + { } +}; + +MODULE_DEVICE_TABLE(i2c, ltc4260_id); + +static struct i2c_driver ltc4260_driver = { + .driver = { + .name = "ltc4260", + }, + .probe = ltc4260_probe, + .id_table = ltc4260_id, +}; + +module_i2c_driver(ltc4260_driver); + +MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>"); +MODULE_DESCRIPTION("LTC4260 driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/max1668.c b/drivers/hwmon/max1668.c index 029b65e6c589..e3ed0a5b6d94 100644 --- a/drivers/hwmon/max1668.c +++ b/drivers/hwmon/max1668.c @@ -66,7 +66,8 @@ MODULE_PARM_DESC(read_only, "Don't set any values, read only mode"); enum chips { max1668, max1805, max1989 }; struct max1668_data { - struct device *hwmon_dev; + struct i2c_client *client; + const struct attribute_group *groups[3]; enum chips type; struct mutex update_lock; @@ -82,8 +83,8 @@ struct max1668_data { static struct max1668_data *max1668_update_device(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct max1668_data *data = i2c_get_clientdata(client); + struct max1668_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; struct max1668_data *ret = data; s32 val; int i; @@ -205,8 +206,8 @@ static ssize_t set_temp_max(struct device *dev, const char *buf, size_t count) { int index = to_sensor_dev_attr(devattr)->index; - struct i2c_client *client = to_i2c_client(dev); - struct max1668_data *data = i2c_get_clientdata(client); + struct max1668_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; long temp; int ret; @@ -216,10 +217,11 @@ static ssize_t set_temp_max(struct device *dev, mutex_lock(&data->update_lock); data->temp_max[index] = clamp_val(temp/1000, -128, 127); - if (i2c_smbus_write_byte_data(client, + ret = i2c_smbus_write_byte_data(client, MAX1668_REG_LIMH_WR(index), - data->temp_max[index])) - count = -EIO; + data->temp_max[index]); + if (ret < 0) + count = ret; mutex_unlock(&data->update_lock); return count; @@ -230,8 +232,8 @@ static ssize_t set_temp_min(struct device *dev, const char *buf, size_t count) { int index = to_sensor_dev_attr(devattr)->index; - struct i2c_client *client = to_i2c_client(dev); - struct max1668_data *data = i2c_get_clientdata(client); + struct max1668_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; long temp; int ret; @@ -241,10 +243,11 @@ static ssize_t set_temp_min(struct device *dev, mutex_lock(&data->update_lock); data->temp_min[index] = clamp_val(temp/1000, -128, 127); - if (i2c_smbus_write_byte_data(client, + ret = i2c_smbus_write_byte_data(client, MAX1668_REG_LIML_WR(index), - data->temp_min[index])) - count = -EIO; + data->temp_min[index]); + if (ret < 0) + count = ret; mutex_unlock(&data->update_lock); return count; @@ -405,60 +408,29 @@ static int max1668_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_adapter *adapter = client->adapter; + struct device *dev = &client->dev; + struct device *hwmon_dev; struct max1668_data *data; - int err; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -ENODEV; - data = devm_kzalloc(&client->dev, sizeof(struct max1668_data), - GFP_KERNEL); + data = devm_kzalloc(dev, sizeof(struct max1668_data), GFP_KERNEL); if (!data) return -ENOMEM; - i2c_set_clientdata(client, data); + data->client = client; data->type = id->driver_data; mutex_init(&data->update_lock); - /* Register sysfs hooks */ - err = sysfs_create_group(&client->dev.kobj, &max1668_group_common); - if (err) - return err; - - if (data->type == max1668 || data->type == max1989) { - err = sysfs_create_group(&client->dev.kobj, - &max1668_group_unique); - if (err) - goto error_sysrem0; - } - - data->hwmon_dev = hwmon_device_register(&client->dev); - if (IS_ERR(data->hwmon_dev)) { - err = PTR_ERR(data->hwmon_dev); - goto error_sysrem1; - } - - return 0; - -error_sysrem1: + /* sysfs hooks */ + data->groups[0] = &max1668_group_common; if (data->type == max1668 || data->type == max1989) - sysfs_remove_group(&client->dev.kobj, &max1668_group_unique); -error_sysrem0: - sysfs_remove_group(&client->dev.kobj, &max1668_group_common); - return err; -} - -static int max1668_remove(struct i2c_client *client) -{ - struct max1668_data *data = i2c_get_clientdata(client); + data->groups[1] = &max1668_group_unique; - hwmon_device_unregister(data->hwmon_dev); - if (data->type == max1668 || data->type == max1989) - sysfs_remove_group(&client->dev.kobj, &max1668_group_unique); - - sysfs_remove_group(&client->dev.kobj, &max1668_group_common); - - return 0; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, data->groups); + return PTR_ERR_OR_ZERO(hwmon_dev); } static const struct i2c_device_id max1668_id[] = { @@ -476,7 +448,6 @@ static struct i2c_driver max1668_driver = { .name = "max1668", }, .probe = max1668_probe, - .remove = max1668_remove, .id_table = max1668_id, .detect = max1668_detect, .address_list = max1668_addr_list, diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c index 066e587a18a5..70650de2cbd1 100644 --- a/drivers/hwmon/max6639.c +++ b/drivers/hwmon/max6639.c @@ -80,7 +80,7 @@ static const int rpm_ranges[] = { 2000, 4000, 8000, 16000 }; * Client data (each client gets its own) */ struct max6639_data { - struct device *hwmon_dev; + struct i2c_client *client; struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ @@ -104,8 +104,8 @@ struct max6639_data { static struct max6639_data *max6639_update_device(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct max6639_data *data = i2c_get_clientdata(client); + struct max6639_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; struct max6639_data *ret = data; int i; int status_reg; @@ -191,9 +191,8 @@ static ssize_t show_temp_fault(struct device *dev, static ssize_t show_temp_max(struct device *dev, struct device_attribute *dev_attr, char *buf) { - struct i2c_client *client = to_i2c_client(dev); - struct max6639_data *data = i2c_get_clientdata(client); struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + struct max6639_data *data = dev_get_drvdata(dev); return sprintf(buf, "%d\n", (data->temp_therm[attr->index] * 1000)); } @@ -202,9 +201,9 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *dev_attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct max6639_data *data = i2c_get_clientdata(client); struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + struct max6639_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; unsigned long val; int res; @@ -224,9 +223,8 @@ static ssize_t set_temp_max(struct device *dev, static ssize_t show_temp_crit(struct device *dev, struct device_attribute *dev_attr, char *buf) { - struct i2c_client *client = to_i2c_client(dev); - struct max6639_data *data = i2c_get_clientdata(client); struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + struct max6639_data *data = dev_get_drvdata(dev); return sprintf(buf, "%d\n", (data->temp_alert[attr->index] * 1000)); } @@ -235,9 +233,9 @@ static ssize_t set_temp_crit(struct device *dev, struct device_attribute *dev_attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct max6639_data *data = i2c_get_clientdata(client); struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + struct max6639_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; unsigned long val; int res; @@ -258,9 +256,8 @@ static ssize_t show_temp_emergency(struct device *dev, struct device_attribute *dev_attr, char *buf) { - struct i2c_client *client = to_i2c_client(dev); - struct max6639_data *data = i2c_get_clientdata(client); struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + struct max6639_data *data = dev_get_drvdata(dev); return sprintf(buf, "%d\n", (data->temp_ot[attr->index] * 1000)); } @@ -269,9 +266,9 @@ static ssize_t set_temp_emergency(struct device *dev, struct device_attribute *dev_attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct max6639_data *data = i2c_get_clientdata(client); struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + struct max6639_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; unsigned long val; int res; @@ -291,9 +288,8 @@ static ssize_t set_temp_emergency(struct device *dev, static ssize_t show_pwm(struct device *dev, struct device_attribute *dev_attr, char *buf) { - struct i2c_client *client = to_i2c_client(dev); - struct max6639_data *data = i2c_get_clientdata(client); struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + struct max6639_data *data = dev_get_drvdata(dev); return sprintf(buf, "%d\n", data->pwm[attr->index] * 255 / 120); } @@ -302,9 +298,9 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *dev_attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct max6639_data *data = i2c_get_clientdata(client); struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + struct max6639_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; unsigned long val; int res; @@ -378,7 +374,7 @@ static SENSOR_DEVICE_ATTR(temp1_emergency_alarm, S_IRUGO, show_alarm, NULL, 5); static SENSOR_DEVICE_ATTR(temp2_emergency_alarm, S_IRUGO, show_alarm, NULL, 4); -static struct attribute *max6639_attributes[] = { +static struct attribute *max6639_attrs[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp1_fault.dev_attr.attr, @@ -403,10 +399,7 @@ static struct attribute *max6639_attributes[] = { &sensor_dev_attr_temp2_emergency_alarm.dev_attr.attr, NULL }; - -static const struct attribute_group max6639_group = { - .attrs = max6639_attributes, -}; +ATTRIBUTE_GROUPS(max6639); /* * returns respective index in rpm_ranges table @@ -424,9 +417,9 @@ static int rpm_range_to_reg(int range) return 1; /* default: 4000 RPM */ } -static int max6639_init_client(struct i2c_client *client) +static int max6639_init_client(struct i2c_client *client, + struct max6639_data *data) { - struct max6639_data *data = i2c_get_clientdata(client); struct max6639_platform_data *max6639_info = dev_get_platdata(&client->dev); int i; @@ -545,50 +538,27 @@ static int max6639_detect(struct i2c_client *client, static int max6639_probe(struct i2c_client *client, const struct i2c_device_id *id) { + struct device *dev = &client->dev; struct max6639_data *data; + struct device *hwmon_dev; int err; - data = devm_kzalloc(&client->dev, sizeof(struct max6639_data), - GFP_KERNEL); + data = devm_kzalloc(dev, sizeof(struct max6639_data), GFP_KERNEL); if (!data) return -ENOMEM; - i2c_set_clientdata(client, data); + data->client = client; mutex_init(&data->update_lock); /* Initialize the max6639 chip */ - err = max6639_init_client(client); + err = max6639_init_client(client, data); if (err < 0) return err; - /* Register sysfs hooks */ - err = sysfs_create_group(&client->dev.kobj, &max6639_group); - if (err) - return err; - - data->hwmon_dev = hwmon_device_register(&client->dev); - if (IS_ERR(data->hwmon_dev)) { - err = PTR_ERR(data->hwmon_dev); - goto error_remove; - } - - dev_info(&client->dev, "temperature sensor and fan control found\n"); - - return 0; - -error_remove: - sysfs_remove_group(&client->dev.kobj, &max6639_group); - return err; -} - -static int max6639_remove(struct i2c_client *client) -{ - struct max6639_data *data = i2c_get_clientdata(client); - - hwmon_device_unregister(data->hwmon_dev); - sysfs_remove_group(&client->dev.kobj, &max6639_group); - - return 0; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, + max6639_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); } #ifdef CONFIG_PM_SLEEP @@ -622,9 +592,7 @@ static const struct i2c_device_id max6639_id[] = { MODULE_DEVICE_TABLE(i2c, max6639_id); -static const struct dev_pm_ops max6639_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(max6639_suspend, max6639_resume) -}; +static SIMPLE_DEV_PM_OPS(max6639_pm_ops, max6639_suspend, max6639_resume); static struct i2c_driver max6639_driver = { .class = I2C_CLASS_HWMON, @@ -633,7 +601,6 @@ static struct i2c_driver max6639_driver = { .pm = &max6639_pm_ops, }, .probe = max6639_probe, - .remove = max6639_remove, .id_table = max6639_id, .detect = max6639_detect, .address_list = normal_i2c, diff --git a/drivers/hwmon/max6650.c b/drivers/hwmon/max6650.c index 0cafc390db4d..162a520f4bd6 100644 --- a/drivers/hwmon/max6650.c +++ b/drivers/hwmon/max6650.c @@ -105,38 +105,13 @@ module_param(clock, int, S_IRUGO); #define DIV_FROM_REG(reg) (1 << (reg & 7)) -static int max6650_probe(struct i2c_client *client, - const struct i2c_device_id *id); -static int max6650_init_client(struct i2c_client *client); -static int max6650_remove(struct i2c_client *client); -static struct max6650_data *max6650_update_device(struct device *dev); - -/* - * Driver data (common to all clients) - */ - -static const struct i2c_device_id max6650_id[] = { - { "max6650", 1 }, - { "max6651", 4 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, max6650_id); - -static struct i2c_driver max6650_driver = { - .driver = { - .name = "max6650", - }, - .probe = max6650_probe, - .remove = max6650_remove, - .id_table = max6650_id, -}; - /* * Client data (each client gets its own) */ struct max6650_data { - struct device *hwmon_dev; + struct i2c_client *client; + const struct attribute_group *groups[3]; struct mutex update_lock; int nr_fans; char valid; /* zero until following fields are valid */ @@ -151,6 +126,51 @@ struct max6650_data { u8 alarm; }; +static const u8 tach_reg[] = { + MAX6650_REG_TACH0, + MAX6650_REG_TACH1, + MAX6650_REG_TACH2, + MAX6650_REG_TACH3, +}; + +static struct max6650_data *max6650_update_device(struct device *dev) +{ + struct max6650_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int i; + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { + data->speed = i2c_smbus_read_byte_data(client, + MAX6650_REG_SPEED); + data->config = i2c_smbus_read_byte_data(client, + MAX6650_REG_CONFIG); + for (i = 0; i < data->nr_fans; i++) { + data->tach[i] = i2c_smbus_read_byte_data(client, + tach_reg[i]); + } + data->count = i2c_smbus_read_byte_data(client, + MAX6650_REG_COUNT); + data->dac = i2c_smbus_read_byte_data(client, MAX6650_REG_DAC); + + /* + * Alarms are cleared on read in case the condition that + * caused the alarm is removed. Keep the value latched here + * for providing the register through different alarm files. + */ + data->alarm |= i2c_smbus_read_byte_data(client, + MAX6650_REG_ALARM); + + data->last_updated = jiffies; + data->valid = 1; + } + + mutex_unlock(&data->update_lock); + + return data; +} + static ssize_t get_fan(struct device *dev, struct device_attribute *devattr, char *buf) { @@ -235,8 +255,8 @@ static ssize_t get_target(struct device *dev, struct device_attribute *devattr, static ssize_t set_target(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct max6650_data *data = i2c_get_clientdata(client); + struct max6650_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; int kscale, ktach; unsigned long rpm; int err; @@ -304,8 +324,8 @@ static ssize_t get_pwm(struct device *dev, struct device_attribute *devattr, static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct max6650_data *data = i2c_get_clientdata(client); + struct max6650_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; unsigned long pwm; int err; @@ -350,8 +370,8 @@ static ssize_t get_enable(struct device *dev, struct device_attribute *devattr, static ssize_t set_enable(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct max6650_data *data = i2c_get_clientdata(client); + struct max6650_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; int max6650_modes[3] = {0, 3, 2}; unsigned long mode; int err; @@ -400,8 +420,8 @@ static ssize_t get_div(struct device *dev, struct device_attribute *devattr, static ssize_t set_div(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct max6650_data *data = i2c_get_clientdata(client); + struct max6650_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; unsigned long div; int err; @@ -446,7 +466,7 @@ static ssize_t get_alarm(struct device *dev, struct device_attribute *devattr, { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct max6650_data *data = max6650_update_device(dev); - struct i2c_client *client = to_i2c_client(dev); + struct i2c_client *client = data->client; int alarm = 0; if (data->alarm & attr->index) { @@ -484,7 +504,8 @@ static umode_t max6650_attrs_visible(struct kobject *kobj, struct attribute *a, int n) { struct device *dev = container_of(kobj, struct device, kobj); - struct i2c_client *client = to_i2c_client(dev); + struct max6650_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; u8 alarm_en = i2c_smbus_read_byte_data(client, MAX6650_REG_ALARM_EN); struct device_attribute *devattr; @@ -519,7 +540,7 @@ static struct attribute *max6650_attrs[] = { NULL }; -static struct attribute_group max6650_attr_grp = { +static const struct attribute_group max6650_group = { .attrs = max6650_attrs, .is_visible = max6650_attrs_visible, }; @@ -531,7 +552,7 @@ static struct attribute *max6651_attrs[] = { NULL }; -static const struct attribute_group max6651_attr_grp = { +static const struct attribute_group max6651_group = { .attrs = max6651_attrs, }; @@ -539,74 +560,17 @@ static const struct attribute_group max6651_attr_grp = { * Real code */ -static int max6650_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct max6650_data *data; - int err; - - data = devm_kzalloc(&client->dev, sizeof(struct max6650_data), - GFP_KERNEL); - if (!data) { - dev_err(&client->dev, "out of memory.\n"); - return -ENOMEM; - } - - i2c_set_clientdata(client, data); - mutex_init(&data->update_lock); - data->nr_fans = id->driver_data; - - /* - * Initialize the max6650 chip - */ - err = max6650_init_client(client); - if (err) - return err; - - err = sysfs_create_group(&client->dev.kobj, &max6650_attr_grp); - if (err) - return err; - /* 3 additional fan inputs for the MAX6651 */ - if (data->nr_fans == 4) { - err = sysfs_create_group(&client->dev.kobj, &max6651_attr_grp); - if (err) - goto err_remove; - } - - data->hwmon_dev = hwmon_device_register(&client->dev); - if (!IS_ERR(data->hwmon_dev)) - return 0; - - err = PTR_ERR(data->hwmon_dev); - dev_err(&client->dev, "error registering hwmon device.\n"); - if (data->nr_fans == 4) - sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp); -err_remove: - sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp); - return err; -} - -static int max6650_remove(struct i2c_client *client) +static int max6650_init_client(struct max6650_data *data, + struct i2c_client *client) { - struct max6650_data *data = i2c_get_clientdata(client); - - hwmon_device_unregister(data->hwmon_dev); - if (data->nr_fans == 4) - sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp); - sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp); - return 0; -} - -static int max6650_init_client(struct i2c_client *client) -{ - struct max6650_data *data = i2c_get_clientdata(client); + struct device *dev = &client->dev; int config; int err = -EIO; config = i2c_smbus_read_byte_data(client, MAX6650_REG_CONFIG); if (config < 0) { - dev_err(&client->dev, "Error reading config, aborting.\n"); + dev_err(dev, "Error reading config, aborting.\n"); return err; } @@ -620,11 +584,11 @@ static int max6650_init_client(struct i2c_client *client) config |= MAX6650_CFG_V12; break; default: - dev_err(&client->dev, "illegal value for fan_voltage (%d)\n", + dev_err(dev, "illegal value for fan_voltage (%d)\n", fan_voltage); } - dev_info(&client->dev, "Fan voltage is set to %dV.\n", + dev_info(dev, "Fan voltage is set to %dV.\n", (config & MAX6650_CFG_V12) ? 12 : 5); switch (prescaler) { @@ -650,11 +614,10 @@ static int max6650_init_client(struct i2c_client *client) | MAX6650_CFG_PRESCALER_16; break; default: - dev_err(&client->dev, "illegal value for prescaler (%d)\n", - prescaler); + dev_err(dev, "illegal value for prescaler (%d)\n", prescaler); } - dev_info(&client->dev, "Prescaler is set to %d.\n", + dev_info(dev, "Prescaler is set to %d.\n", 1 << (config & MAX6650_CFG_PRESCALER_MASK)); /* @@ -664,17 +627,17 @@ static int max6650_init_client(struct i2c_client *client) */ if ((config & MAX6650_CFG_MODE_MASK) == MAX6650_CFG_MODE_OFF) { - dev_dbg(&client->dev, "Change mode to open loop, full off.\n"); + dev_dbg(dev, "Change mode to open loop, full off.\n"); config = (config & ~MAX6650_CFG_MODE_MASK) | MAX6650_CFG_MODE_OPEN_LOOP; if (i2c_smbus_write_byte_data(client, MAX6650_REG_DAC, 255)) { - dev_err(&client->dev, "DAC write error, aborting.\n"); + dev_err(dev, "DAC write error, aborting.\n"); return err; } } if (i2c_smbus_write_byte_data(client, MAX6650_REG_CONFIG, config)) { - dev_err(&client->dev, "Config write error, aborting.\n"); + dev_err(dev, "Config write error, aborting.\n"); return err; } @@ -684,51 +647,55 @@ static int max6650_init_client(struct i2c_client *client) return 0; } -static const u8 tach_reg[] = { - MAX6650_REG_TACH0, - MAX6650_REG_TACH1, - MAX6650_REG_TACH2, - MAX6650_REG_TACH3, -}; - -static struct max6650_data *max6650_update_device(struct device *dev) +static int max6650_probe(struct i2c_client *client, + const struct i2c_device_id *id) { - int i; - struct i2c_client *client = to_i2c_client(dev); - struct max6650_data *data = i2c_get_clientdata(client); - - mutex_lock(&data->update_lock); + struct device *dev = &client->dev; + struct max6650_data *data; + struct device *hwmon_dev; + int err; - if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { - data->speed = i2c_smbus_read_byte_data(client, - MAX6650_REG_SPEED); - data->config = i2c_smbus_read_byte_data(client, - MAX6650_REG_CONFIG); - for (i = 0; i < data->nr_fans; i++) { - data->tach[i] = i2c_smbus_read_byte_data(client, - tach_reg[i]); - } - data->count = i2c_smbus_read_byte_data(client, - MAX6650_REG_COUNT); - data->dac = i2c_smbus_read_byte_data(client, MAX6650_REG_DAC); + data = devm_kzalloc(dev, sizeof(struct max6650_data), GFP_KERNEL); + if (!data) + return -ENOMEM; - /* - * Alarms are cleared on read in case the condition that - * caused the alarm is removed. Keep the value latched here - * for providing the register through different alarm files. - */ - data->alarm |= i2c_smbus_read_byte_data(client, - MAX6650_REG_ALARM); + data->client = client; + mutex_init(&data->update_lock); + data->nr_fans = id->driver_data; - data->last_updated = jiffies; - data->valid = 1; - } + /* + * Initialize the max6650 chip + */ + err = max6650_init_client(data, client); + if (err) + return err; - mutex_unlock(&data->update_lock); + data->groups[0] = &max6650_group; + /* 3 additional fan inputs for the MAX6651 */ + if (data->nr_fans == 4) + data->groups[1] = &max6651_group; - return data; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, + client->name, data, + data->groups); + return PTR_ERR_OR_ZERO(hwmon_dev); } +static const struct i2c_device_id max6650_id[] = { + { "max6650", 1 }, + { "max6651", 4 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, max6650_id); + +static struct i2c_driver max6650_driver = { + .driver = { + .name = "max6650", + }, + .probe = max6650_probe, + .id_table = max6650_id, +}; + module_i2c_driver(max6650_driver); MODULE_AUTHOR("Hans J. Koch"); diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index de3c152a1d9a..e24ed521051a 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -1,9 +1,9 @@ /* * Hardware monitoring driver for LTC2974, LTC2977, LTC2978, LTC3880, - * and LTC3883 + * LTC3883, and LTM4676 * * Copyright (c) 2011 Ericsson AB. - * Copyright (c) 2013 Guenter Roeck + * Copyright (c) 2013, 2014 Guenter Roeck * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -14,10 +14,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/kernel.h> @@ -28,7 +24,7 @@ #include <linux/i2c.h> #include "pmbus.h" -enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 }; +enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883, ltm4676 }; /* Common for all chips */ #define LTC2978_MFR_VOUT_PEAK 0xdd @@ -45,7 +41,7 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 }; #define LTC2974_MFR_IOUT_PEAK 0xd7 #define LTC2974_MFR_IOUT_MIN 0xd8 -/* LTC3880 and LTC3883 */ +/* LTC3880, LTC3883, and LTM4676 */ #define LTC3880_MFR_IOUT_PEAK 0xd7 #define LTC3880_MFR_CLEAR_PEAKS 0xe3 #define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4 @@ -53,7 +49,8 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 }; /* LTC3883 only */ #define LTC3883_MFR_IIN_PEAK 0xe1 -#define LTC2974_ID 0x0212 +#define LTC2974_ID_REV1 0x0212 +#define LTC2974_ID_REV2 0x0213 #define LTC2977_ID 0x0130 #define LTC2978_ID_REV1 0x0121 #define LTC2978_ID_REV2 0x0122 @@ -62,6 +59,8 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 }; #define LTC3880_ID_MASK 0xff00 #define LTC3883_ID 0x4300 #define LTC3883_ID_MASK 0xff00 +#define LTM4676_ID 0x4480 /* datasheet claims 0x440X */ +#define LTM4676_ID_MASK 0xfff0 #define LTC2974_NUM_PAGES 4 #define LTC2978_NUM_PAGES 8 @@ -370,6 +369,7 @@ static const struct i2c_device_id ltc2978_id[] = { {"ltc2978", ltc2978}, {"ltc3880", ltc3880}, {"ltc3883", ltc3883}, + {"ltm4676", ltm4676}, {} }; MODULE_DEVICE_TABLE(i2c, ltc2978_id); @@ -394,7 +394,7 @@ static int ltc2978_probe(struct i2c_client *client, if (chip_id < 0) return chip_id; - if (chip_id == LTC2974_ID) { + if (chip_id == LTC2974_ID_REV1 || chip_id == LTC2974_ID_REV2) { data->id = ltc2974; } else if (chip_id == LTC2977_ID) { data->id = ltc2977; @@ -405,6 +405,8 @@ static int ltc2978_probe(struct i2c_client *client, data->id = ltc3880; } else if ((chip_id & LTC3883_ID_MASK) == LTC3883_ID) { data->id = ltc3883; + } else if ((chip_id & LTM4676_ID_MASK) == LTM4676_ID) { + data->id = ltm4676; } else { dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id); return -ENODEV; @@ -458,6 +460,7 @@ static int ltc2978_probe(struct i2c_client *client, } break; case ltc3880: + case ltm4676: info->read_word_data = ltc3880_read_word_data; info->pages = LTC3880_NUM_PAGES; info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN @@ -500,5 +503,5 @@ static struct i2c_driver ltc2978_driver = { module_i2c_driver(ltc2978_driver); MODULE_AUTHOR("Guenter Roeck"); -MODULE_DESCRIPTION("PMBus driver for LTC2974, LTC2978, LTC3880, and LTC3883"); +MODULE_DESCRIPTION("PMBus driver for LTC2974, LTC2978, LTC3880, LTC3883, and LTM4676"); MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/smm665.c b/drivers/hwmon/smm665.c index d9e1b7de78da..4ef5802df6d8 100644 --- a/drivers/hwmon/smm665.c +++ b/drivers/hwmon/smm665.c @@ -222,7 +222,7 @@ static int smm665_read_adc(struct smm665_data *data, int adc) rv = i2c_smbus_read_word_swapped(client, 0); if (rv < 0) { dev_dbg(&client->dev, "Failed to read ADC value: error %d", rv); - return -1; + return rv; } /* * Validate/verify readback adc channel (in bit 11..14). |