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/mutex.h>
  39 #include "pvrusb2-hdw.h"
  40 #include "pvrusb2-io.h"
  41 #include <media/cx2341x.h>
  42
  43 /* Legal values for PVR2_CID_HSM */
  44 #define PVR2_CVAL_HSM_FAIL 0
  45 #define PVR2_CVAL_HSM_FULL 1
  46 #define PVR2_CVAL_HSM_HIGH 2
  47
  48 #define PVR2_VID_ENDPOINT        0x84
  49 #define PVR2_UNK_ENDPOINT        0x86    /* maybe raw yuv ? */
  50 #define PVR2_VBI_ENDPOINT        0x88
  51
  52 #define PVR2_CTL_BUFFSIZE        64
  53
  54 #define FREQTABLE_SIZE 500
  55
  56 #define LOCK_TAKE(x) do { mutex_lock(&x##_mutex); x##_held = !0; } while (0)
  57 #define LOCK_GIVE(x) do { x##_held = 0; mutex_unlock(&x##_mutex); } while (0)
  58
  59 struct pvr2_decoder;
  60
  61 typedef int (*pvr2_ctlf_is_dirty)(struct pvr2_ctrl *);
  62 typedef void (*pvr2_ctlf_clear_dirty)(struct pvr2_ctrl *);
  63 typedef int (*pvr2_ctlf_get_value)(struct pvr2_ctrl *,int *);
  64 typedef int (*pvr2_ctlf_set_value)(struct pvr2_ctrl *,int msk,int val);
  65 typedef int (*pvr2_ctlf_val_to_sym)(struct pvr2_ctrl *,int msk,int val,
  66                                     char *,unsigned int,unsigned int *);
  67 typedef int (*pvr2_ctlf_sym_to_val)(struct pvr2_ctrl *,
  68                                     const char *,unsigned int,
  69                                     int *mskp,int *valp);
  70 typedef unsigned int (*pvr2_ctlf_get_v4lflags)(struct pvr2_ctrl *);
  71
  72 /* This structure describes a specific control.  A table of these is set up
  73    in pvrusb2-hdw.c. */
  74 struct pvr2_ctl_info {
  75         /* Control's name suitable for use as an identifier */
  76         const char *name;
  77
  78         /* Short description of control */
  79         const char *desc;
  80
  81         /* Control's implementation */
  82         pvr2_ctlf_get_value get_value;      /* Get its value */
  83         pvr2_ctlf_get_value get_min_value;  /* Get minimum allowed value */
  84         pvr2_ctlf_get_value get_max_value;  /* Get maximum allowed value */
  85         pvr2_ctlf_set_value set_value;      /* Set its value */
  86         pvr2_ctlf_val_to_sym val_to_sym;    /* Custom convert value->symbol */
  87         pvr2_ctlf_sym_to_val sym_to_val;    /* Custom convert symbol->value */
  88         pvr2_ctlf_is_dirty is_dirty;        /* Return true if dirty */
  89         pvr2_ctlf_clear_dirty clear_dirty;  /* Clear dirty state */
  90         pvr2_ctlf_get_v4lflags get_v4lflags;/* Retrieve v4l flags */
  91
  92         /* Control's type (int, enum, bitmask) */
  93         enum pvr2_ctl_type type;
  94
  95         /* Associated V4L control ID, if any */
  96         int v4l_id;
  97
  98         /* Associated driver internal ID, if any */
  99         int internal_id;
 100
 101         /* Don't implicitly initialize this control's value */
 102         int skip_init;
 103
 104         /* Starting value for this control */
 105         int default_value;
 106
 107         /* Type-specific control information */
 108         union {
 109                 struct { /* Integer control */
 110                         long min_value; /* lower limit */
 111                         long max_value; /* upper limit */
 112                 } type_int;
 113                 struct { /* enumerated control */
 114                         unsigned int count;       /* enum value count */
 115                         const char **value_names; /* symbol names */
 116                 } type_enum;
 117                 struct { /* bitmask control */
 118                         unsigned int valid_bits; /* bits in use */
 119                         const char **bit_names;  /* symbol name/bit */
 120                 } type_bitmask;
 121         } def;
 122 };
 123
 124
 125 /* Same as pvr2_ctl_info, but includes storage for the control description */
 126 #define PVR2_CTLD_INFO_DESC_SIZE 32
 127 struct pvr2_ctld_info {
 128         struct pvr2_ctl_info info;
 129         char desc[PVR2_CTLD_INFO_DESC_SIZE];
 130 };
 131
 132 struct pvr2_ctrl {
 133         const struct pvr2_ctl_info *info;
 134         struct pvr2_hdw *hdw;
 135 };
 136
 137
 138 struct pvr2_audio_stat {
 139         void *ctxt;
 140         void (*detach)(void *);
 141         int (*status)(void *);
 142 };
 143
 144 struct pvr2_decoder_ctrl {
 145         void *ctxt;
 146         void (*detach)(void *);
 147         void (*enable)(void *,int);
 148         int (*tuned)(void *);
 149         void (*force_reset)(void *);
 150 };
 151
 152 #define PVR2_I2C_PEND_DETECT  0x01  /* Need to detect a client type */
 153 #define PVR2_I2C_PEND_CLIENT  0x02  /* Client needs a specific update */
 154 #define PVR2_I2C_PEND_REFRESH 0x04  /* Client has specific pending bits */
 155 #define PVR2_I2C_PEND_STALE   0x08  /* Broadcast pending bits */
 156
 157 #define PVR2_I2C_PEND_ALL (PVR2_I2C_PEND_DETECT |\
 158                            PVR2_I2C_PEND_CLIENT |\
 159                            PVR2_I2C_PEND_REFRESH |\
 160                            PVR2_I2C_PEND_STALE)
 161
 162 /* Disposition of firmware1 loading situation */
 163 #define FW1_STATE_UNKNOWN 0
 164 #define FW1_STATE_MISSING 1
 165 #define FW1_STATE_FAILED 2
 166 #define FW1_STATE_RELOAD 3
 167 #define FW1_STATE_OK 4
 168
 169 /* Known major hardware variants, keyed from device ID */
 170 #define PVR2_HDW_TYPE_29XXX 0
 171 #define PVR2_HDW_TYPE_24XXX 1
 172
 173 typedef int (*pvr2_i2c_func)(struct pvr2_hdw *,u8,u8 *,u16,u8 *, u16);
 174 #define PVR2_I2C_FUNC_CNT 128
 175
 176 /* This structure contains all state data directly needed to
 177    manipulate the hardware (as opposed to complying with a kernel
 178    interface) */
 179 struct pvr2_hdw {
 180         /* Underlying USB device handle */
 181         struct usb_device *usb_dev;
 182         struct usb_interface *usb_intf;
 183
 184         /* Device type, one of PVR2_HDW_TYPE_xxxxx */
 185         unsigned int hdw_type;
 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         void (*poll_trigger_func)(void *);
 195         void *poll_trigger_data;
 196
 197         char name[32];
 198
 199         /* I2C stuff */
 200         struct i2c_adapter i2c_adap;
 201         struct i2c_algorithm i2c_algo;
 202         pvr2_i2c_func i2c_func[PVR2_I2C_FUNC_CNT];
 203         int i2c_cx25840_hack_state;
 204         int i2c_linked;
 205         unsigned int i2c_pend_types;    /* Which types of update are needed */
 206         unsigned long i2c_pend_mask;    /* Change bits we need to scan */
 207         unsigned long i2c_stale_mask;   /* Pending broadcast change bits */
 208         unsigned long i2c_active_mask;  /* All change bits currently in use */
 209         struct list_head i2c_clients;
 210         struct mutex i2c_list_lock;
 211
 212         /* Frequency table */
 213         unsigned int freqTable[FREQTABLE_SIZE];
 214         unsigned int freqProgSlot;
 215         unsigned int freqSlot;
 216
 217         /* Stuff for handling low level control interaction with device */
 218         struct mutex ctl_lock_mutex;
 219         int ctl_lock_held;  /* For debugging */
 220         struct urb *ctl_write_urb;
 221         struct urb *ctl_read_urb;
 222         unsigned char *ctl_write_buffer;
 223         unsigned char *ctl_read_buffer;
 224         volatile int ctl_write_pend_flag;
 225         volatile int ctl_read_pend_flag;
 226         volatile int ctl_timeout_flag;
 227         struct completion ctl_done;
 228         unsigned char cmd_buffer[PVR2_CTL_BUFFSIZE];
 229         int cmd_debug_state;               // Low level command debugging info
 230         unsigned char cmd_debug_code;      //
 231         unsigned int cmd_debug_write_len;  //
 232         unsigned int cmd_debug_read_len;   //
 233
 234         int flag_ok;            // device in known good state
 235         int flag_disconnected;  // flag_ok == 0 due to disconnect
 236         int flag_init_ok;       // true if structure is fully initialized
 237         int flag_streaming_enabled; // true if streaming should be on
 238         int fw1_state;          // current situation with fw1
 239
 240         int flag_decoder_is_tuned;
 241
 242         struct pvr2_decoder_ctrl *decoder_ctrl;
 243
 244         // CPU firmware info (used to help find / save firmware data)
 245         char *fw_buffer;
 246         unsigned int fw_size;
 247
 248         // Which subsystem pieces have been enabled / configured
 249         unsigned long subsys_enabled_mask;
 250
 251         // Which subsystems are manipulated to enable streaming
 252         unsigned long subsys_stream_mask;
 253
 254         // True if there is a request to trigger logging of state in each
 255         // module.
 256         int log_requested;
 257
 258         /* Tuner / frequency control stuff */
 259         unsigned int tuner_type;
 260         int tuner_updated;
 261         unsigned int freqVal;
 262         int freqDirty;
 263
 264         /* Video standard handling */
 265         v4l2_std_id std_mask_eeprom; // Hardware supported selections
 266         v4l2_std_id std_mask_avail;  // Which standards we may select from
 267         v4l2_std_id std_mask_cur;    // Currently selected standard(s)
 268         unsigned int std_enum_cnt;   // # of enumerated standards
 269         int std_enum_cur;            // selected standard enumeration value
 270         int std_dirty;               // True if std_mask_cur has changed
 271         struct pvr2_ctl_info std_info_enum;
 272         struct pvr2_ctl_info std_info_avail;
 273         struct pvr2_ctl_info std_info_cur;
 274         struct v4l2_standard *std_defs;
 275         const char **std_enum_names;
 276
 277         // Generated string names, one per actual V4L2 standard
 278         const char *std_mask_ptrs[32];
 279         char std_mask_names[32][10];
 280
 281         int unit_number;             /* ID for driver instance */
 282         unsigned long serial_number; /* ID for hardware itself */
 283
 284         /* Minor number used by v4l logic (yes, this is a hack, as there should
 285            be no v4l junk here).  Probably a better way to do this. */
 286         int v4l_minor_number;
 287
 288         /* Location of eeprom or a negative number if none */
 289         int eeprom_addr;
 290
 291         enum pvr2_config config;
 292
 293         /* Information about what audio signal we're hearing */
 294         int flag_stereo;
 295         int flag_bilingual;
 296         struct pvr2_audio_stat *audio_stat;
 297
 298         /* Control state needed for cx2341x module */
 299         struct cx2341x_mpeg_params enc_cur_state;
 300         struct cx2341x_mpeg_params enc_ctl_state;
 301         /* True if an encoder attribute has changed */
 302         int enc_stale;
 303         /* True if enc_cur_state is valid */
 304         int enc_cur_valid;
 305
 306         /* Control state */
 307 #define VCREATE_DATA(lab) int lab##_val; int lab##_dirty
 308         VCREATE_DATA(brightness);
 309         VCREATE_DATA(contrast);
 310         VCREATE_DATA(saturation);
 311         VCREATE_DATA(hue);
 312         VCREATE_DATA(volume);
 313         VCREATE_DATA(balance);
 314         VCREATE_DATA(bass);
 315         VCREATE_DATA(treble);
 316         VCREATE_DATA(mute);
 317         VCREATE_DATA(input);
 318         VCREATE_DATA(audiomode);
 319         VCREATE_DATA(res_hor);
 320         VCREATE_DATA(res_ver);
 321         VCREATE_DATA(srate);
 322 #undef VCREATE_DATA
 323
 324         struct pvr2_ctld_info *mpeg_ctrl_info;
 325
 326         struct pvr2_ctrl *controls;
 327         unsigned int control_cnt;
 328 };
 329
 330 #endif /* __PVRUSB2_HDW_INTERNAL_H */
 331
 332 /*
 333   Stuff for Emacs to see, in order to encourage consistent editing style:
 334   *** Local Variables: ***
 335   *** mode: c ***
 336   *** fill-column: 75 ***
 337   *** tab-width: 8 ***
 338   *** c-basic-offset: 8 ***
 339   *** End: ***
 340   */