drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h

   1 /*
   2  *
   3  *  $Id$
   4  *
   5  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21 #ifndef __PVRUSB2_HDW_INTERNAL_H
  22 #define __PVRUSB2_HDW_INTERNAL_H
  23
  24 /*
  25
  26   This header sets up all the internal structures and definitions needed to
  27   track and coordinate the driver's interaction with the hardware.  ONLY
  28   source files which actually implement part of that whole circus should be
  29   including this header.  Higher levels, like the external layers to the
  30   various public APIs (V4L, sysfs, etc) should NOT ever include this
  31   private, internal header.  This means that pvrusb2-hdw, pvrusb2-encoder,
  32   etc will include this, but pvrusb2-v4l should not.
  33
  34 */
  35
  36 #include <linux/videodev2.h>
  37 #include <linux/i2c.h>
  38 #include <linux/workqueue.h>
  39 #include <linux/mutex.h>
  40 #include "pvrusb2-hdw.h"
  41 #include "pvrusb2-io.h"
  42 #include <media/cx2341x.h>
  43 #include "pvrusb2-devattr.h"
  44
  45 /* Legal values for PVR2_CID_HSM */
  46 #define PVR2_CVAL_HSM_FAIL 0
  47 #define PVR2_CVAL_HSM_FULL 1
  48 #define PVR2_CVAL_HSM_HIGH 2
  49
  50 #define PVR2_VID_ENDPOINT        0x84
  51 #define PVR2_UNK_ENDPOINT        0x86    /* maybe raw yuv ? */
  52 #define PVR2_VBI_ENDPOINT        0x88
  53
  54 #define PVR2_CTL_BUFFSIZE        64
  55
  56 #define FREQTABLE_SIZE 500
  57
  58 #define LOCK_TAKE(x) do { mutex_lock(&x##_mutex); x##_held = !0; } while (0)
  59 #define LOCK_GIVE(x) do { x##_held = 0; mutex_unlock(&x##_mutex); } while (0)
  60
  61 struct pvr2_decoder;
  62
  63 typedef int (*pvr2_ctlf_is_dirty)(struct pvr2_ctrl *);
  64 typedef void (*pvr2_ctlf_clear_dirty)(struct pvr2_ctrl *);
  65 typedef int (*pvr2_ctlf_check_value)(struct pvr2_ctrl *,int);
  66 typedef int (*pvr2_ctlf_get_value)(struct pvr2_ctrl *,int *);
  67 typedef int (*pvr2_ctlf_set_value)(struct pvr2_ctrl *,int msk,int val);
  68 typedef int (*pvr2_ctlf_val_to_sym)(struct pvr2_ctrl *,int msk,int val,
  69                                     char *,unsigned int,unsigned int *);
  70 typedef int (*pvr2_ctlf_sym_to_val)(struct pvr2_ctrl *,
  71                                     const char *,unsigned int,
  72                                     int *mskp,int *valp);
  73 typedef unsigned int (*pvr2_ctlf_get_v4lflags)(struct pvr2_ctrl *);
  74
  75 /* This structure describes a specific control.  A table of these is set up
  76    in pvrusb2-hdw.c. */
  77 struct pvr2_ctl_info {
  78         /* Control's name suitable for use as an identifier */
  79         const char *name;
  80
  81         /* Short description of control */
  82         const char *desc;
  83
  84         /* Control's implementation */
  85         pvr2_ctlf_get_value get_value;      /* Get its value */
  86         pvr2_ctlf_get_value get_min_value;  /* Get minimum allowed value */
  87         pvr2_ctlf_get_value get_max_value;  /* Get maximum allowed value */
  88         pvr2_ctlf_set_value set_value;      /* Set its value */
  89         pvr2_ctlf_check_value check_value;  /* Check that value is valid */
  90         pvr2_ctlf_val_to_sym val_to_sym;    /* Custom convert value->symbol */
  91         pvr2_ctlf_sym_to_val sym_to_val;    /* Custom convert symbol->value */
  92         pvr2_ctlf_is_dirty is_dirty;        /* Return true if dirty */
  93         pvr2_ctlf_clear_dirty clear_dirty;  /* Clear dirty state */
  94         pvr2_ctlf_get_v4lflags get_v4lflags;/* Retrieve v4l flags */
  95
  96         /* Control's type (int, enum, bitmask) */
  97         enum pvr2_ctl_type type;
  98
  99         /* Associated V4L control ID, if any */
 100         int v4l_id;
 101
 102         /* Associated driver internal ID, if any */
 103         int internal_id;
 104
 105         /* Don't implicitly initialize this control's value */
 106         int skip_init;
 107
 108         /* Starting value for this control */
 109         int default_value;
 110
 111         /* Type-specific control information */
 112         union {
 113                 struct { /* Integer control */
 114                         long min_value; /* lower limit */
 115                         long max_value; /* upper limit */
 116                 } type_int;
 117                 struct { /* enumerated control */
 118                         unsigned int count;       /* enum value count */
 119                         const char **value_names; /* symbol names */
 120                 } type_enum;
 121                 struct { /* bitmask control */
 122                         unsigned int valid_bits; /* bits in use */
 123                         const char **bit_names;  /* symbol name/bit */
 124                 } type_bitmask;
 125         } def;
 126 };
 127
 128
 129 /* Same as pvr2_ctl_info, but includes storage for the control description */
 130 #define PVR2_CTLD_INFO_DESC_SIZE 32
 131 struct pvr2_ctld_info {
 132         struct pvr2_ctl_info info;
 133         char desc[PVR2_CTLD_INFO_DESC_SIZE];
 134 };
 135
 136 struct pvr2_ctrl {
 137         const struct pvr2_ctl_info *info;
 138         struct pvr2_hdw *hdw;
 139 };
 140
 141
 142 struct pvr2_decoder_ctrl {
 143         void *ctxt;
 144         void (*detach)(void *);
 145         void (*enable)(void *,int);
 146         void (*force_reset)(void *);
 147 };
 148
 149 #define PVR2_I2C_PEND_DETECT  0x01  /* Need to detect a client type */
 150 #define PVR2_I2C_PEND_CLIENT  0x02  /* Client needs a specific update */
 151 #define PVR2_I2C_PEND_REFRESH 0x04  /* Client has specific pending bits */
 152 #define PVR2_I2C_PEND_STALE   0x08  /* Broadcast pending bits */
 153
 154 #define PVR2_I2C_PEND_ALL (PVR2_I2C_PEND_DETECT |\
 155                            PVR2_I2C_PEND_CLIENT |\
 156                            PVR2_I2C_PEND_REFRESH |\
 157                            PVR2_I2C_PEND_STALE)
 158
 159 /* Disposition of firmware1 loading situation */
 160 #define FW1_STATE_UNKNOWN 0
 161 #define FW1_STATE_MISSING 1
 162 #define FW1_STATE_FAILED 2
 163 #define FW1_STATE_RELOAD 3
 164 #define FW1_STATE_OK 4
 165
 166 typedef int (*pvr2_i2c_func)(struct pvr2_hdw *,u8,u8 *,u16,u8 *, u16);
 167 #define PVR2_I2C_FUNC_CNT 128
 168
 169 /* This structure contains all state data directly needed to
 170    manipulate the hardware (as opposed to complying with a kernel
 171    interface) */
 172 struct pvr2_hdw {
 173         /* Underlying USB device handle */
 174         struct usb_device *usb_dev;
 175         struct usb_interface *usb_intf;
 176
 177         /* Device description, anything that must adjust behavior based on
 178            device specific info will use information held here. */
 179         const struct pvr2_device_desc *hdw_desc;
 180
 181         /* Kernel worker thread handling */
 182         struct workqueue_struct *workqueue;
 183         struct work_struct workpoll;     /* Update driver state */
 184         struct work_struct worki2csync;  /* Update i2c clients */
 185         struct work_struct workinit;     /* Driver initialization sequence */
 186
 187         /* Video spigot */
 188         struct pvr2_stream *vid_stream;
 189
 190         /* Mutex for all hardware state control */
 191         struct mutex big_lock_mutex;
 192         int big_lock_held;  /* For debugging */
 193
 194         char name[32];
 195
 196         /* I2C stuff */
 197         struct i2c_adapter i2c_adap;
 198         struct i2c_algorithm i2c_algo;
 199         pvr2_i2c_func i2c_func[PVR2_I2C_FUNC_CNT];
 200         int i2c_cx25840_hack_state;
 201         int i2c_linked;
 202         unsigned int i2c_pend_types;    /* Which types of update are needed */
 203         unsigned long i2c_pend_mask;    /* Change bits we need to scan */
 204         unsigned long i2c_stale_mask;   /* Pending broadcast change bits */
 205         unsigned long i2c_active_mask;  /* All change bits currently in use */
 206         struct list_head i2c_clients;
 207         struct mutex i2c_list_lock;
 208
 209         /* Frequency table */
 210         unsigned int freqTable[FREQTABLE_SIZE];
 211         unsigned int freqProgSlot;
 212
 213         /* Stuff for handling low level control interaction with device */
 214         struct mutex ctl_lock_mutex;
 215         int ctl_lock_held;  /* For debugging */
 216         struct urb *ctl_write_urb;
 217         struct urb *ctl_read_urb;
 218         unsigned char *ctl_write_buffer;
 219         unsigned char *ctl_read_buffer;
 220         int ctl_write_pend_flag;
 221         int ctl_read_pend_flag;
 222         int ctl_timeout_flag;
 223         struct completion ctl_done;
 224         unsigned char cmd_buffer[PVR2_CTL_BUFFSIZE];
 225         int cmd_debug_state;               // Low level command debugging info
 226         unsigned char cmd_debug_code;      //
 227         unsigned int cmd_debug_write_len;  //
 228         unsigned int cmd_debug_read_len;   //
 229
 230         /* Bits of state that describe what is going on with various parts
 231            of the driver. */
 232         int state_encoder_ok;         /* Encoder is operational */
 233         int state_encoder_run;        /* Encoder is running */
 234         int state_encoder_config;     /* Encoder is configured */
 235         int state_encoder_waitok;     /* Encoder pre-wait done */
 236         int state_decoder_run;        /* Decoder is running */
 237         int state_usbstream_run;      /* FX2 is streaming */
 238         int state_decoder_quiescent;  /* Decoder idle for > 50msec */
 239         int state_pipeline_config;    /* Pipeline is configured */
 240         int state_pipeline_req;                /* Somebody wants to stream */
 241         int state_pipeline_pause;              /* Pipeline must be paused */
 242         int state_pipeline_idle;               /* Pipeline not running */
 243
 244         /* This is the master state of the driver.  It is the combined
 245            result of other bits of state.  Examining this will indicate the
 246            overall state of the driver.  Values here are one of
 247            PVR2_STATE_xxxx */
 248         unsigned int master_state;
 249
 250         /* True if states must be re-evaluated */
 251         int state_stale;
 252
 253         void (*state_func)(void *);
 254         void *state_data;
 255
 256         /* Timer for measuring decoder settling time */
 257         struct timer_list quiescent_timer;
 258
 259         /* Timer for measuring encoder pre-wait time */
 260         struct timer_list encoder_wait_timer;
 261
 262         /* Place to block while waiting for state changes */
 263         wait_queue_head_t state_wait_data;
 264
 265
 266         int flag_ok;            /* device in known good state */
 267         int flag_disconnected;  /* flag_ok == 0 due to disconnect */
 268         int flag_init_ok;       /* true if structure is fully initialized */
 269         int fw1_state;          /* current situation with fw1 */
 270         int flag_decoder_missed;/* We've noticed missing decoder */
 271         int flag_tripped;       /* Indicates overall failure to start */
 272
 273         struct pvr2_decoder_ctrl *decoder_ctrl;
 274
 275         // CPU firmware info (used to help find / save firmware data)
 276         char *fw_buffer;
 277         unsigned int fw_size;
 278         int fw_cpu_flag; /* True if we are dealing with the CPU */
 279
 280         // True if there is a request to trigger logging of state in each
 281         // module.
 282         int log_requested;
 283
 284         /* Tuner / frequency control stuff */
 285         unsigned int tuner_type;
 286         int tuner_updated;
 287         unsigned int freqValTelevision;  /* Current freq for tv mode */
 288         unsigned int freqValRadio;       /* Current freq for radio mode */
 289         unsigned int freqSlotTelevision; /* Current slot for tv mode */
 290         unsigned int freqSlotRadio;      /* Current slot for radio mode */
 291         unsigned int freqSelector;       /* 0=radio 1=television */
 292         int freqDirty;
 293
 294         /* Current tuner info - this information is polled from the I2C bus */
 295         struct v4l2_tuner tuner_signal_info;
 296         int tuner_signal_stale;
 297
 298         /* Video standard handling */
 299         v4l2_std_id std_mask_eeprom; // Hardware supported selections
 300         v4l2_std_id std_mask_avail;  // Which standards we may select from
 301         v4l2_std_id std_mask_cur;    // Currently selected standard(s)
 302         unsigned int std_enum_cnt;   // # of enumerated standards
 303         int std_enum_cur;            // selected standard enumeration value
 304         int std_dirty;               // True if std_mask_cur has changed
 305         struct pvr2_ctl_info std_info_enum;
 306         struct pvr2_ctl_info std_info_avail;
 307         struct pvr2_ctl_info std_info_cur;
 308         struct v4l2_standard *std_defs;
 309         const char **std_enum_names;
 310
 311         // Generated string names, one per actual V4L2 standard
 312         const char *std_mask_ptrs[32];
 313         char std_mask_names[32][10];
 314
 315         int unit_number;             /* ID for driver instance */
 316         unsigned long serial_number; /* ID for hardware itself */
 317
 318         char bus_info[32]; /* Bus location info */
 319
 320         /* Minor numbers used by v4l logic (yes, this is a hack, as there
 321            should be no v4l junk here).  Probably a better way to do this. */
 322         int v4l_minor_number_video;
 323         int v4l_minor_number_vbi;
 324         int v4l_minor_number_radio;
 325
 326         /* Location of eeprom or a negative number if none */
 327         int eeprom_addr;
 328
 329         enum pvr2_config active_stream_type;
 330         enum pvr2_config desired_stream_type;
 331
 332         /* Control state needed for cx2341x module */
 333         struct cx2341x_mpeg_params enc_cur_state;
 334         struct cx2341x_mpeg_params enc_ctl_state;
 335         /* True if an encoder attribute has changed */
 336         int enc_stale;
 337         /* True if an unsafe encoder attribute has changed */
 338         int enc_unsafe_stale;
 339         /* True if enc_cur_state is valid */
 340         int enc_cur_valid;
 341
 342         /* Control state */
 343 #define VCREATE_DATA(lab) int lab##_val; int lab##_dirty
 344         VCREATE_DATA(brightness);
 345         VCREATE_DATA(contrast);
 346         VCREATE_DATA(saturation);
 347         VCREATE_DATA(hue);
 348         VCREATE_DATA(volume);
 349         VCREATE_DATA(balance);
 350         VCREATE_DATA(bass);
 351         VCREATE_DATA(treble);
 352         VCREATE_DATA(mute);
 353         VCREATE_DATA(input);
 354         VCREATE_DATA(audiomode);
 355         VCREATE_DATA(res_hor);
 356         VCREATE_DATA(res_ver);
 357         VCREATE_DATA(srate);
 358 #undef VCREATE_DATA
 359
 360         struct pvr2_ctld_info *mpeg_ctrl_info;
 361
 362         struct pvr2_ctrl *controls;
 363         unsigned int control_cnt;
 364 };
 365
 366 /* This function gets the current frequency */
 367 unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *);
 368 void pvr2_hdw_set_decoder(struct pvr2_hdw *,struct pvr2_decoder_ctrl *);
 369
 370 #endif /* __PVRUSB2_HDW_INTERNAL_H */
 371
 372 /*
 373   Stuff for Emacs to see, in order to encourage consistent editing style:
 374   *** Local Variables: ***
 375   *** mode: c ***
 376   *** fill-column: 75 ***
 377   *** tab-width: 8 ***
 378   *** c-basic-offset: 8 ***
 379   *** End: ***
 380   */