331 lines
11 KiB
C
331 lines
11 KiB
C
/*
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*
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* $Id$
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*
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* Copyright (C) 2005 Mike Isely <isely@pobox.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __PVRUSB2_HDW_H
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#define __PVRUSB2_HDW_H
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#include <linux/usb.h>
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#include <linux/videodev2.h>
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#include "pvrusb2-io.h"
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#include "pvrusb2-ctrl.h"
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/* Private internal control ids, look these up with
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pvr2_hdw_get_ctrl_by_id() - these are NOT visible in V4L */
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#define PVR2_CID_STDENUM 1
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#define PVR2_CID_STDCUR 2
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#define PVR2_CID_STDAVAIL 3
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#define PVR2_CID_INPUT 4
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#define PVR2_CID_AUDIOMODE 5
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#define PVR2_CID_FREQUENCY 6
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#define PVR2_CID_HRES 7
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#define PVR2_CID_VRES 8
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/* Legal values for the INPUT state variable */
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#define PVR2_CVAL_INPUT_TV 0
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#define PVR2_CVAL_INPUT_SVIDEO 1
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#define PVR2_CVAL_INPUT_COMPOSITE 2
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#define PVR2_CVAL_INPUT_RADIO 3
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enum pvr2_config {
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pvr2_config_empty, /* No configuration */
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pvr2_config_mpeg, /* Encoded / compressed video */
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pvr2_config_vbi, /* Standard vbi info */
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pvr2_config_pcm, /* Audio raw pcm stream */
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pvr2_config_rawvideo, /* Video raw frames */
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};
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enum pvr2_v4l_type {
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pvr2_v4l_type_video,
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pvr2_v4l_type_vbi,
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pvr2_v4l_type_radio,
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};
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/* Major states that we can be in:
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*
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* DEAD - Device is in an unusable state and cannot be recovered. This
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* can happen if we completely lose the ability to communicate with it
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* (but it might still on the bus). In this state there's nothing we can
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* do; it must be replugged in order to recover.
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*
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* COLD - Device is in an unusuable state, needs microcontroller firmware.
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*
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* WARM - We can communicate with the device and the proper
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* microcontroller firmware is running, but other device initialization is
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* still needed (e.g. encoder firmware).
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*
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* ERROR - A problem prevents capture operation (e.g. encoder firmware
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* missing).
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*
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* READY - Device is operational, but not streaming.
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*
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* RUN - Device is streaming.
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*
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*/
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#define PVR2_STATE_NONE 0
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#define PVR2_STATE_DEAD 1
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#define PVR2_STATE_COLD 2
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#define PVR2_STATE_WARM 3
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#define PVR2_STATE_ERROR 4
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#define PVR2_STATE_READY 5
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#define PVR2_STATE_RUN 6
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/* Translate configuration enum to a string label */
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const char *pvr2_config_get_name(enum pvr2_config);
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/* Translate a master state enum to a string label */
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const char *pvr2_hdw_get_state_name(unsigned int);
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struct pvr2_hdw;
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/* Create and return a structure for interacting with the underlying
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hardware */
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struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
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const struct usb_device_id *devid);
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/* Destroy hardware interaction structure */
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void pvr2_hdw_destroy(struct pvr2_hdw *);
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/* Register a function to be called whenever the master state changes. */
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void pvr2_hdw_set_state_callback(struct pvr2_hdw *,
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void (*callback_func)(void *),
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void *callback_data);
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/* Return true if in the ready (normal) state */
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int pvr2_hdw_dev_ok(struct pvr2_hdw *);
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/* Return small integer number [1..N] for logical instance number of this
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device. This is useful for indexing array-valued module parameters. */
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int pvr2_hdw_get_unit_number(struct pvr2_hdw *);
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/* Get pointer to underlying USB device */
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struct usb_device *pvr2_hdw_get_dev(struct pvr2_hdw *);
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/* Retrieve serial number of device */
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unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *);
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/* Retrieve bus location info of device */
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const char *pvr2_hdw_get_bus_info(struct pvr2_hdw *);
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/* Called when hardware has been unplugged */
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void pvr2_hdw_disconnect(struct pvr2_hdw *);
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/* Get the number of defined controls */
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unsigned int pvr2_hdw_get_ctrl_count(struct pvr2_hdw *);
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/* Retrieve a control handle given its index (0..count-1) */
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struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_index(struct pvr2_hdw *,unsigned int);
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/* Retrieve a control handle given its internal ID (if any) */
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struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_id(struct pvr2_hdw *,unsigned int);
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/* Retrieve a control handle given its V4L ID (if any) */
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struct pvr2_ctrl *pvr2_hdw_get_ctrl_v4l(struct pvr2_hdw *,unsigned int ctl_id);
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/* Retrieve a control handle given its immediate predecessor V4L ID (if any) */
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struct pvr2_ctrl *pvr2_hdw_get_ctrl_nextv4l(struct pvr2_hdw *,
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unsigned int ctl_id);
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/* Commit all control changes made up to this point */
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int pvr2_hdw_commit_ctl(struct pvr2_hdw *);
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/* Return name for this driver instance */
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const char *pvr2_hdw_get_driver_name(struct pvr2_hdw *);
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/* Mark tuner status stale so that it will be re-fetched */
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void pvr2_hdw_execute_tuner_poll(struct pvr2_hdw *);
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/* Return information about the tuner */
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int pvr2_hdw_get_tuner_status(struct pvr2_hdw *,struct v4l2_tuner *);
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/* Query device and see if it thinks it is on a high-speed USB link */
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int pvr2_hdw_is_hsm(struct pvr2_hdw *);
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/* Return a string token representative of the hardware type */
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const char *pvr2_hdw_get_type(struct pvr2_hdw *);
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/* Return a single line description of the hardware type */
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const char *pvr2_hdw_get_desc(struct pvr2_hdw *);
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/* Turn streaming on/off */
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int pvr2_hdw_set_streaming(struct pvr2_hdw *,int);
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/* Find out if streaming is on */
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int pvr2_hdw_get_streaming(struct pvr2_hdw *);
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/* Retrieve driver overall state */
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int pvr2_hdw_get_state(struct pvr2_hdw *);
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/* Configure the type of stream to generate */
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int pvr2_hdw_set_stream_type(struct pvr2_hdw *, enum pvr2_config);
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/* Get handle to video output stream */
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struct pvr2_stream *pvr2_hdw_get_video_stream(struct pvr2_hdw *);
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/* Emit a video standard struct */
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int pvr2_hdw_get_stdenum_value(struct pvr2_hdw *hdw,struct v4l2_standard *std,
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unsigned int idx);
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/* Enable / disable retrieval of CPU firmware or prom contents. This must
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be enabled before pvr2_hdw_cpufw_get() will function. Note that doing
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this may prevent the device from running (and leaving this mode may
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imply a device reset). */
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void pvr2_hdw_cpufw_set_enabled(struct pvr2_hdw *,
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int prom_flag,
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int enable_flag);
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/* Return true if we're in a mode for retrieval CPU firmware */
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int pvr2_hdw_cpufw_get_enabled(struct pvr2_hdw *);
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/* Retrieve a piece of the CPU's firmware at the given offset. Return
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value is the number of bytes retrieved or zero if we're past the end or
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an error otherwise (e.g. if firmware retrieval is not enabled). */
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int pvr2_hdw_cpufw_get(struct pvr2_hdw *,unsigned int offs,
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char *buf,unsigned int cnt);
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/* Retrieve a previously stored v4l minor device number */
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int pvr2_hdw_v4l_get_minor_number(struct pvr2_hdw *,enum pvr2_v4l_type index);
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/* Store a v4l minor device number */
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void pvr2_hdw_v4l_store_minor_number(struct pvr2_hdw *,
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enum pvr2_v4l_type index,int);
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/* Direct read/write access to chip's registers:
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match_type - how to interpret match_chip (e.g. driver ID, i2c address)
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match_chip - chip match value (e.g. I2C_DRIVERD_xxxx)
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reg_id - register number to access
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setFl - true to set the register, false to read it
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val_ptr - storage location for source / result. */
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int pvr2_hdw_register_access(struct pvr2_hdw *,
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u32 match_type, u32 match_chip,u64 reg_id,
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int setFl,u64 *val_ptr);
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/* The following entry points are all lower level things you normally don't
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want to worry about. */
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/* Issue a command and get a response from the device. LOTS of higher
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level stuff is built on this. */
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int pvr2_send_request(struct pvr2_hdw *,
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void *write_ptr,unsigned int write_len,
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void *read_ptr,unsigned int read_len);
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/* Slightly higher level device communication functions. */
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int pvr2_write_register(struct pvr2_hdw *, u16, u32);
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/* Call if for any reason we can't talk to the hardware anymore - this will
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cause the driver to stop flailing on the device. */
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void pvr2_hdw_render_useless(struct pvr2_hdw *);
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/* Set / clear 8051's reset bit */
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void pvr2_hdw_cpureset_assert(struct pvr2_hdw *,int);
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/* Execute a USB-commanded device reset */
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void pvr2_hdw_device_reset(struct pvr2_hdw *);
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/* Reset worker's error trapping circuit breaker */
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int pvr2_hdw_untrip(struct pvr2_hdw *);
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/* Execute hard reset command (after this point it's likely that the
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encoder will have to be reconfigured). This also clears the "useless"
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state. */
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int pvr2_hdw_cmd_deep_reset(struct pvr2_hdw *);
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/* Execute simple reset command */
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int pvr2_hdw_cmd_powerup(struct pvr2_hdw *);
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/* Order decoder to reset */
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int pvr2_hdw_cmd_decoder_reset(struct pvr2_hdw *);
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/* Direct manipulation of GPIO bits */
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int pvr2_hdw_gpio_get_dir(struct pvr2_hdw *hdw,u32 *);
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int pvr2_hdw_gpio_get_out(struct pvr2_hdw *hdw,u32 *);
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int pvr2_hdw_gpio_get_in(struct pvr2_hdw *hdw,u32 *);
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int pvr2_hdw_gpio_chg_dir(struct pvr2_hdw *hdw,u32 msk,u32 val);
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int pvr2_hdw_gpio_chg_out(struct pvr2_hdw *hdw,u32 msk,u32 val);
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/* This data structure is specifically for the next function... */
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struct pvr2_hdw_debug_info {
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int big_lock_held;
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int ctl_lock_held;
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int flag_disconnected;
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int flag_init_ok;
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int flag_ok;
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int fw1_state;
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int flag_decoder_missed;
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int flag_tripped;
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int state_encoder_ok;
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int state_encoder_run;
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int state_decoder_run;
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int state_usbstream_run;
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int state_decoder_quiescent;
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int state_pipeline_config;
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int state_pipeline_req;
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int state_pipeline_pause;
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int state_pipeline_idle;
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int cmd_debug_state;
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int cmd_debug_write_len;
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int cmd_debug_read_len;
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int cmd_debug_write_pend;
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int cmd_debug_read_pend;
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int cmd_debug_timeout;
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int cmd_debug_rstatus;
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int cmd_debug_wstatus;
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unsigned char cmd_code;
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};
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/* Non-intrusively retrieve internal state info - this is useful for
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diagnosing lockups. Note that this operation is completed without any
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kind of locking and so it is not atomic and may yield inconsistent
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results. This is *purely* a debugging aid. */
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void pvr2_hdw_get_debug_info_unlocked(const struct pvr2_hdw *hdw,
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struct pvr2_hdw_debug_info *);
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/* Intrusively retrieve internal state info - this is useful for
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diagnosing overall driver state. This operation synchronizes against
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the overall driver mutex - so if there are locking problems this will
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likely hang! This is *purely* a debugging aid. */
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void pvr2_hdw_get_debug_info_locked(struct pvr2_hdw *hdw,
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struct pvr2_hdw_debug_info *);
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/* Report out several lines of text that describes driver internal state.
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Results are written into the passed-in buffer. */
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unsigned int pvr2_hdw_state_report(struct pvr2_hdw *hdw,
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char *buf_ptr,unsigned int buf_size);
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/* Cause modules to log their state once */
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void pvr2_hdw_trigger_module_log(struct pvr2_hdw *hdw);
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/* Cause encoder firmware to be uploaded into the device. This is normally
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done autonomously, but the interface is exported here because it is also
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a debugging aid. */
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int pvr2_upload_firmware2(struct pvr2_hdw *hdw);
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#endif /* __PVRUSB2_HDW_H */
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/*
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Stuff for Emacs to see, in order to encourage consistent editing style:
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*** Local Variables: ***
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*** mode: c ***
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*** fill-column: 75 ***
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*** tab-width: 8 ***
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*** c-basic-offset: 8 ***
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*** End: ***
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*/
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