diff options
| author | Benson Leung <bleung@chromium.org> | 2013-02-21 12:14:58 -0800 |
|---|---|---|
| committer | Matthew Garrett <matthew.garrett@nebula.com> | 2013-02-27 08:30:44 -0500 |
| commit | bcaf089c5160639d6c43091f717faa3d0dc8f3d8 (patch) | |
| tree | de8277a55a5caccb9ccad76a31696bf62e8e98b9 /drivers/platform | |
| parent | 8e1ad4c4bf7b99b495625433a1fcc2b566caa222 (diff) | |
| download | linux-bcaf089c5160639d6c43091f717faa3d0dc8f3d8.tar.gz | |
Platform: x86: chromeos_laptop - Add support for probing devices
This will allow support for devices that may appear at more than one i2c address at boot time. The specific example is the atmel_mxt touch devices, which may appear at a different address if it comes up in bootloader mode. Signed-off-by: Benson Leung <bleung@chromium.org> Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/chromeos_laptop.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/platform/x86/chromeos_laptop.c b/drivers/platform/x86/chromeos_laptop.c index 577e64d9f0ac..c13f0c5e282a 100644 --- a/drivers/platform/x86/chromeos_laptop.c +++ b/drivers/platform/x86/chromeos_laptop.c @@ -148,6 +148,26 @@ static int __init find_i2c_adapter_num(enum i2c_adapter_type type) } /* + * Takes a list of addresses in addrs as such : + * { addr1, ... , addrn, I2C_CLIENT_END }; + * add_probed_i2c_device will use i2c_new_probed_device + * and probe for devices at all of the addresses listed. + * Returns NULL if no devices found. + * See Documentation/i2c/instantiating-devices for more information. + */ +static __init struct i2c_client *add_probed_i2c_device( + const char *name, + enum i2c_adapter_type type, + struct i2c_board_info *info, + const unsigned short *addrs) +{ + return __add_probed_i2c_device(name, + find_i2c_adapter_num(type), + info, + addrs); +} + +/* * Probes for a device at a single address, the one provided by * info->addr. * Returns NULL if no device found. |