diff options
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-hdw.h')
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-hdw.h | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.h b/drivers/media/video/pvrusb2/pvrusb2-hdw.h new file mode 100644 index 000000000000..63f529154431 --- /dev/null +++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.h @@ -0,0 +1,335 @@ +/* + * + * $Id$ + * + * Copyright (C) 2005 Mike Isely <isely@pobox.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 + * + * 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. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ +#ifndef __PVRUSB2_HDW_H +#define __PVRUSB2_HDW_H + +#include <linux/usb.h> +#include <linux/videodev2.h> +#include "pvrusb2-io.h" +#include "pvrusb2-ctrl.h" + + +/* Private internal control ids, look these up with + pvr2_hdw_get_ctrl_by_id() - these are NOT visible in V4L */ +#define PVR2_CID_STDENUM 1 +#define PVR2_CID_STDCUR 2 +#define PVR2_CID_STDAVAIL 3 +#define PVR2_CID_INPUT 4 +#define PVR2_CID_AUDIOMODE 5 +#define PVR2_CID_FREQUENCY 6 +#define PVR2_CID_HRES 7 +#define PVR2_CID_VRES 8 + +/* Legal values for the INPUT state variable */ +#define PVR2_CVAL_INPUT_TV 0 +#define PVR2_CVAL_INPUT_SVIDEO 1 +#define PVR2_CVAL_INPUT_COMPOSITE 2 +#define PVR2_CVAL_INPUT_RADIO 3 + +/* Values that pvr2_hdw_get_signal_status() returns */ +#define PVR2_SIGNAL_OK 0x0001 +#define PVR2_SIGNAL_STEREO 0x0002 +#define PVR2_SIGNAL_SAP 0x0004 + + +/* Subsystem definitions - these are various pieces that can be + independently stopped / started. Usually you don't want to mess with + this directly (let the driver handle things itself), but it is useful + for debugging. */ +#define PVR2_SUBSYS_B_ENC_FIRMWARE 0 +#define PVR2_SUBSYS_B_ENC_CFG 1 +#define PVR2_SUBSYS_B_DIGITIZER_RUN 2 +#define PVR2_SUBSYS_B_USBSTREAM_RUN 3 +#define PVR2_SUBSYS_B_ENC_RUN 4 + +#define PVR2_SUBSYS_CFG_ALL ( \ + (1 << PVR2_SUBSYS_B_ENC_FIRMWARE) | \ + (1 << PVR2_SUBSYS_B_ENC_CFG) ) +#define PVR2_SUBSYS_RUN_ALL ( \ + (1 << PVR2_SUBSYS_B_DIGITIZER_RUN) | \ + (1 << PVR2_SUBSYS_B_USBSTREAM_RUN) | \ + (1 << PVR2_SUBSYS_B_ENC_RUN) ) +#define PVR2_SUBSYS_ALL ( \ + PVR2_SUBSYS_CFG_ALL | \ + PVR2_SUBSYS_RUN_ALL ) + +enum pvr2_config { + pvr2_config_empty, + pvr2_config_mpeg, + pvr2_config_vbi, + pvr2_config_radio, +}; + +const char *pvr2_config_get_name(enum pvr2_config); + +struct pvr2_hdw; + +/* Create and return a structure for interacting with the underlying + hardware */ +struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf, + const struct usb_device_id *devid); + +/* Poll for background activity (if any) */ +void pvr2_hdw_poll(struct pvr2_hdw *); + +/* Trigger a poll to take place later at a convenient time */ +void pvr2_hdw_poll_trigger(struct pvr2_hdw *); +void pvr2_hdw_poll_trigger_unlocked(struct pvr2_hdw *); + +/* Register a callback used to trigger a future poll */ +void pvr2_hdw_setup_poll_trigger(struct pvr2_hdw *, + void (*func)(void *), + void *data); + +/* Get pointer to structure given unit number */ +struct pvr2_hdw *pvr2_hdw_find(int unit_number); + +/* Destroy hardware interaction structure */ +void pvr2_hdw_destroy(struct pvr2_hdw *); + +/* Set up the structure and attempt to put the device into a usable state. + This can be a time-consuming operation, which is why it is not done + internally as part of the create() step. Return value is exactly the + same as pvr2_hdw_init_ok(). */ +int pvr2_hdw_setup(struct pvr2_hdw *); + +/* Initialization succeeded */ +int pvr2_hdw_init_ok(struct pvr2_hdw *); + +/* Return true if in the ready (normal) state */ +int pvr2_hdw_dev_ok(struct pvr2_hdw *); + +/* Return small integer number [1..N] for logical instance number of this + device. This is useful for indexing array-valued module parameters. */ +int pvr2_hdw_get_unit_number(struct pvr2_hdw *); + +/* Get pointer to underlying USB device */ +struct usb_device *pvr2_hdw_get_dev(struct pvr2_hdw *); + +/* Retrieve serial number of device */ +unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *); + +/* Called when hardware has been unplugged */ +void pvr2_hdw_disconnect(struct pvr2_hdw *); + +/* Get the number of defined controls */ +unsigned int pvr2_hdw_get_ctrl_count(struct pvr2_hdw *); + +/* Retrieve a control handle given its index (0..count-1) */ +struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_index(struct pvr2_hdw *,unsigned int); + +/* Retrieve a control handle given its internal ID (if any) */ +struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_id(struct pvr2_hdw *,unsigned int); + +/* Retrieve a control handle given its V4L ID (if any) */ +struct pvr2_ctrl *pvr2_hdw_get_ctrl_v4l(struct pvr2_hdw *,unsigned int ctl_id); + +/* Retrieve a control handle given its immediate predecessor V4L ID (if any) */ +struct pvr2_ctrl *pvr2_hdw_get_ctrl_nextv4l(struct pvr2_hdw *, + unsigned int ctl_id); + +/* Commit all control changes made up to this point */ +int pvr2_hdw_commit_ctl(struct pvr2_hdw *); + +/* Return name for this driver instance */ +const char *pvr2_hdw_get_driver_name(struct pvr2_hdw *); + +/* Return PVR2_SIGNAL_XXXX bit mask indicating signal status */ +unsigned int pvr2_hdw_get_signal_status(struct pvr2_hdw *); + +/* Query device and see if it thinks it is on a high-speed USB link */ +int pvr2_hdw_is_hsm(struct pvr2_hdw *); + +/* Turn streaming on/off */ +int pvr2_hdw_set_streaming(struct pvr2_hdw *,int); + +/* Find out if streaming is on */ +int pvr2_hdw_get_streaming(struct pvr2_hdw *); + +/* Configure the type of stream to generate */ +int pvr2_hdw_set_stream_type(struct pvr2_hdw *, enum pvr2_config); + +/* Get handle to video output stream */ +struct pvr2_stream *pvr2_hdw_get_video_stream(struct pvr2_hdw *); + +/* Emit a video standard struct */ +int pvr2_hdw_get_stdenum_value(struct pvr2_hdw *hdw,struct v4l2_standard *std, + unsigned int idx); + +/* Enable / disable various pieces of hardware. Items to change are + identified by bit positions within msk, and new state for each item is + identified by corresponding bit positions within val. */ +void pvr2_hdw_subsys_bit_chg(struct pvr2_hdw *hdw, + unsigned long msk,unsigned long val); + +/* Shortcut for pvr2_hdw_subsys_bit_chg(hdw,msk,msk) */ +void pvr2_hdw_subsys_bit_set(struct pvr2_hdw *hdw,unsigned long msk); + +/* Shortcut for pvr2_hdw_subsys_bit_chg(hdw,msk,0) */ +void pvr2_hdw_subsys_bit_clr(struct pvr2_hdw *hdw,unsigned long msk); + +/* Retrieve mask indicating which pieces of hardware are currently enabled + / configured. */ +unsigned long pvr2_hdw_subsys_get(struct pvr2_hdw *); + +/* Adjust mask of what get shut down when streaming is stopped. This is a + debugging aid. */ +void pvr2_hdw_subsys_stream_bit_chg(struct pvr2_hdw *hdw, + unsigned long msk,unsigned long val); + +/* Retrieve mask indicating which pieces of hardware are disabled when + streaming is turned off. */ +unsigned long pvr2_hdw_subsys_stream_get(struct pvr2_hdw *); + + +/* Enable / disable retrieval of CPU firmware. This must be enabled before + pvr2_hdw_cpufw_get() will function. Note that doing this may prevent + the device from running (and leaving this mode may imply a device + reset). */ +void pvr2_hdw_cpufw_set_enabled(struct pvr2_hdw *, int enable_flag); + +/* Return true if we're in a mode for retrieval CPU firmware */ +int pvr2_hdw_cpufw_get_enabled(struct pvr2_hdw *); + +/* Retrieve a piece of the CPU's firmware at the given offset. Return + value is the number of bytes retrieved or zero if we're past the end or + an error otherwise (e.g. if firmware retrieval is not enabled). */ +int pvr2_hdw_cpufw_get(struct pvr2_hdw *,unsigned int offs, + char *buf,unsigned int cnt); + +/* Retrieve previously stored v4l minor device number */ +int pvr2_hdw_v4l_get_minor_number(struct pvr2_hdw *); + +/* Store the v4l minor device number */ +void pvr2_hdw_v4l_store_minor_number(struct pvr2_hdw *,int); + + +/* The following entry points are all lower level things you normally don't + want to worry about. */ + +/* Attempt to recover from a USB foul-up (in practice I find that if you + have to do this, then it's already too late). */ +void pvr2_reset_ctl_endpoints(struct pvr2_hdw *hdw); + +/* Issue a command and get a response from the device. LOTS of higher + level stuff is built on this. */ +int pvr2_send_request(struct pvr2_hdw *, + void *write_ptr,unsigned int write_len, + void *read_ptr,unsigned int read_len); + +/* Issue a command and get a response from the device. This extended + version includes a probe flag (which if set means that device errors + should not be logged or treated as fatal) and a timeout in jiffies. + This can be used to non-lethally probe the health of endpoint 1. */ +int pvr2_send_request_ex(struct pvr2_hdw *,unsigned int timeout,int probe_fl, + void *write_ptr,unsigned int write_len, + void *read_ptr,unsigned int read_len); + +/* Slightly higher level device communication functions. */ +int pvr2_write_register(struct pvr2_hdw *, u16, u32); +int pvr2_read_register(struct pvr2_hdw *, u16, u32 *); +int pvr2_write_u16(struct pvr2_hdw *, u16, int); +int pvr2_write_u8(struct pvr2_hdw *, u8, int); + +/* Call if for any reason we can't talk to the hardware anymore - this will + cause the driver to stop flailing on the device. */ +void pvr2_hdw_render_useless(struct pvr2_hdw *); +void pvr2_hdw_render_useless_unlocked(struct pvr2_hdw *); + +/* Set / clear 8051's reset bit */ +void pvr2_hdw_cpureset_assert(struct pvr2_hdw *,int); + +/* Execute a USB-commanded device reset */ +void pvr2_hdw_device_reset(struct pvr2_hdw *); + +/* Execute hard reset command (after this point it's likely that the + encoder will have to be reconfigured). This also clears the "useless" + state. */ +int pvr2_hdw_cmd_deep_reset(struct pvr2_hdw *); + +/* Execute simple reset command */ +int pvr2_hdw_cmd_powerup(struct pvr2_hdw *); + +/* Order decoder to reset */ +int pvr2_hdw_cmd_decoder_reset(struct pvr2_hdw *); + +/* Stop / start video stream transport */ +int pvr2_hdw_cmd_usbstream(struct pvr2_hdw *hdw,int runFl); + +/* Find I2C address of eeprom */ +int pvr2_hdw_get_eeprom_addr(struct pvr2_hdw *); + +/* Direct manipulation of GPIO bits */ +int pvr2_hdw_gpio_get_dir(struct pvr2_hdw *hdw,u32 *); +int pvr2_hdw_gpio_get_out(struct pvr2_hdw *hdw,u32 *); +int pvr2_hdw_gpio_get_in(struct pvr2_hdw *hdw,u32 *); +int pvr2_hdw_gpio_chg_dir(struct pvr2_hdw *hdw,u32 msk,u32 val); +int pvr2_hdw_gpio_chg_out(struct pvr2_hdw *hdw,u32 msk,u32 val); + +/* This data structure is specifically for the next function... */ +struct pvr2_hdw_debug_info { + int big_lock_held; + int ctl_lock_held; + int flag_ok; + int flag_disconnected; + int flag_init_ok; + int flag_streaming_enabled; + unsigned long subsys_flags; + int cmd_debug_state; + int cmd_debug_write_len; + int cmd_debug_read_len; + int cmd_debug_write_pend; + int cmd_debug_read_pend; + int cmd_debug_timeout; + int cmd_debug_rstatus; + int cmd_debug_wstatus; + unsigned char cmd_code; +}; + +/* Non-intrusively retrieve internal state info - this is useful for + diagnosing lockups. Note that this operation is completed without any + kind of locking and so it is not atomic and may yield inconsistent + results. This is *purely* a debugging aid. */ +void pvr2_hdw_get_debug_info(const struct pvr2_hdw *hdw, + struct pvr2_hdw_debug_info *); + +/* Cause modules to log their state once */ +void pvr2_hdw_trigger_module_log(struct pvr2_hdw *hdw); + +/* Cause encoder firmware to be uploaded into the device. This is normally + done autonomously, but the interface is exported here because it is also + a debugging aid. */ +int pvr2_upload_firmware2(struct pvr2_hdw *hdw); + +/* List of device types that we can match */ +extern struct usb_device_id pvr2_device_table[]; + +#endif /* __PVRUSB2_HDW_H */ + +/* + Stuff for Emacs to see, in order to encourage consistent editing style: + *** Local Variables: *** + *** mode: c *** + *** fill-column: 75 *** + *** tab-width: 8 *** + *** c-basic-offset: 8 *** + *** End: *** + */ |