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_check_value)(struct pvr2_ctrl *,int);
  64 typedef int (*pvr2_ctlf_get_value)(struct pvr2_ctrl *,int *);
  65 typedef int (*pvr2_ctlf_set_value)(struct pvr2_ctrl *,int msk,int val);
  66 typedef int (*pvr2_ctlf_val_to_sym)(struct pvr2_ctrl *,int msk,int val,
  67                                     char *,unsigned int,unsigned int *);
  68 typedef int (*pvr2_ctlf_sym_to_val)(struct pvr2_ctrl *,
  69                                     const char *,unsigned int,
  70                                     int *mskp,int *valp);
  71 typedef unsigned int (*pvr2_ctlf_get_v4lflags)(struct pvr2_ctrl *);
  72
  73 /* This structure describes a specific control.  A table of these is set up
  74    in pvrusb2-hdw.c. */
  75 struct pvr2_ctl_info {
  76         /* Control's name suitable for use as an identifier */
  77         const char *name;
  78
  79         /* Short description of control */
  80         const char *desc;
  81
  82         /* Control's implementation */
  83         pvr2_ctlf_get_value get_value;      /* Get its value */
  84         pvr2_ctlf_get_value get_min_value;  /* Get minimum allowed value */
  85         pvr2_ctlf_get_value get_max_value;  /* Get maximum allowed value */
  86         pvr2_ctlf_set_value set_value;      /* Set its value */
  87         pvr2_ctlf_check_value check_value;  /* Check that value is valid */
  88         pvr2_ctlf_val_to_sym val_to_sym;    /* Custom convert value->symbol */
  89         pvr2_ctlf_sym_to_val sym_to_val;    /* Custom convert symbol->value */
  90         pvr2_ctlf_is_dirty is_dirty;        /* Return true if dirty */
  91         pvr2_ctlf_clear_dirty clear_dirty;  /* Clear dirty state */
  92         pvr2_ctlf_get_v4lflags get_v4lflags;/* Retrieve v4l flags */
  93
  94         /* Control's type (int, enum, bitmask) */
  95         enum pvr2_ctl_type type;
  96
  97         /* Associated V4L control ID, if any */
  98         int v4l_id;
  99
 100         /* Associated driver internal ID, if any */
 101         int internal_id;
 102
 103         /* Don't implicitly initialize this control's value */
 104         int skip_init;
 105
 106         /* Starting value for this control */
 107         int default_value;
 108
 109         /* Type-specific control information */
 110         union {
 111                 struct { /* Integer control */
 112                         long min_value; /* lower limit */
 113                         long max_value; /* upper limit */
 114                 } type_int;
 115                 struct { /* enumerated control */
 116                         unsigned int count;       /* enum value count */
 117                         const char **value_names; /* symbol names */
 118                 } type_enum;
 119                 struct { /* bitmask control */
 120                         unsigned int valid_bits; /* bits in use */
 121                         const char **bit_names;  /* symbol name/bit */
 122                 } type_bitmask;
 123         } def;
 124 };
 125
 126
 127 /* Same as pvr2_ctl_info, but includes storage for the control description */
 128 #define PVR2_CTLD_INFO_DESC_SIZE 32
 129 struct pvr2_ctld_info {
 130         struct pvr2_ctl_info info;
 131         char desc[PVR2_CTLD_INFO_DESC_SIZE];
 132 };
 133
 134 struct pvr2_ctrl {
 135         const struct pvr2_ctl_info *info;
 136         struct pvr2_hdw *hdw;
 137 };
 138
 139
 140 struct pvr2_decoder_ctrl {
 141         void *ctxt;
 142         void (*detach)(void *);
 143         void (*enable)(void *,int);
 144         void (*force_reset)(void *);
 145 };
 146
 147 #define PVR2_I2C_PEND_DETECT  0x01  /* Need to detect a client type */
 148 #define PVR2_I2C_PEND_CLIENT  0x02  /* Client needs a specific update */
 149 #define PVR2_I2C_PEND_REFRESH 0x04  /* Client has specific pending bits */
 150 #define PVR2_I2C_PEND_STALE   0x08  /* Broadcast pending bits */
 151
 152 #define PVR2_I2C_PEND_ALL (PVR2_I2C_PEND_DETECT |\
 153                            PVR2_I2C_PEND_CLIENT |\
 154                            PVR2_I2C_PEND_REFRESH |\
 155                            PVR2_I2C_PEND_STALE)
 156
 157 /* Disposition of firmware1 loading situation */
 158 #define FW1_STATE_UNKNOWN 0
 159 #define FW1_STATE_MISSING 1
 160 #define FW1_STATE_FAILED 2
 161 #define FW1_STATE_RELOAD 3
 162 #define FW1_STATE_OK 4
 163
 164 /* Known major hardware variants, keyed from device ID */
 165 #define PVR2_HDW_TYPE_29XXX 0
 166 #define PVR2_HDW_TYPE_24XXX 1
 167
 168 typedef int (*pvr2_i2c_func)(struct pvr2_hdw *,u8,u8 *,u16,u8 *, u16);
 169 #define PVR2_I2C_FUNC_CNT 128
 170
 171 /* This structure contains all state data directly needed to
 172    manipulate the hardware (as opposed to complying with a kernel
 173    interface) */
 174 struct pvr2_hdw {
 175         /* Underlying USB device handle */
 176         struct usb_device *usb_dev;
 177         struct usb_interface *usb_intf;
 178
 179         /* Device type, one of PVR2_HDW_TYPE_xxxxx */
 180         unsigned int hdw_type;
 181
 182         /* Video spigot */
 183         struct pvr2_stream *vid_stream;
 184
 185         /* Mutex for all hardware state control */
 186         struct mutex big_lock_mutex;
 187         int big_lock_held;  /* For debugging */
 188
 189         void (*poll_trigger_func)(void *);
 190         void *poll_trigger_data;
 191
 192         char name[32];
 193
 194         /* I2C stuff */
 195         struct i2c_adapter i2c_adap;
 196         struct i2c_algorithm i2c_algo;
 197         pvr2_i2c_func i2c_func[PVR2_I2C_FUNC_CNT];
 198         int i2c_cx25840_hack_state;
 199         int i2c_linked;
 200         unsigned int i2c_pend_types;    /* Which types of update are needed */
 201         unsigned long i2c_pend_mask;    /* Change bits we need to scan */
 202         unsigned long i2c_stale_mask;   /* Pending broadcast change bits */
 203         unsigned long i2c_active_mask;  /* All change bits currently in use */
 204         struct list_head i2c_clients;
 205         struct mutex i2c_list_lock;
 206
 207         /* Frequency table */
 208         unsigned int freqTable[FREQTABLE_SIZE];
 209         unsigned int freqProgSlot;
 210
 211         /* Stuff for handling low level control interaction with device */
 212         struct mutex ctl_lock_mutex;
 213         int ctl_lock_held;  /* For debugging */
 214         struct urb *ctl_write_urb;
 215         struct urb *ctl_read_urb;
 216         unsigned char *ctl_write_buffer;
 217         unsigned char *ctl_read_buffer;
 218         volatile int ctl_write_pend_flag;
 219         volatile int ctl_read_pend_flag;
 220         volatile int ctl_timeout_flag;
 221         struct completion ctl_done;
 222         unsigned char cmd_buffer[PVR2_CTL_BUFFSIZE];
 223         int cmd_debug_state;               // Low level command debugging info
 224         unsigned char cmd_debug_code;      //
 225         unsigned int cmd_debug_write_len;  //
 226         unsigned int cmd_debug_read_len;   //
 227
 228         int flag_ok;            // device in known good state
 229         int flag_disconnected;  // flag_ok == 0 due to disconnect
 230         int flag_init_ok;       // true if structure is fully initialized
 231         int flag_streaming_enabled; // true if streaming should be on
 232         int fw1_state;          // current situation with fw1
 233
 234         int flag_decoder_is_tuned;
 235
 236         struct pvr2_decoder_ctrl *decoder_ctrl;
 237
 238         // CPU firmware info (used to help find / save firmware data)
 239         char *fw_buffer;
 240         unsigned int fw_size;
 241
 242         // Which subsystem pieces have been enabled / configured
 243         unsigned long subsys_enabled_mask;
 244
 245         // Which subsystems are manipulated to enable streaming
 246         unsigned long subsys_stream_mask;
 247
 248         // True if there is a request to trigger logging of state in each
 249         // module.
 250         int log_requested;
 251
 252         /* Tuner / frequency control stuff */
 253         unsigned int tuner_type;
 254         int tuner_updated;
 255         unsigned int freqValTelevision;  /* Current freq for tv mode */
 256         unsigned int freqValRadio;       /* Current freq for radio mode */
 257         unsigned int freqSlotTelevision; /* Current slot for tv mode */
 258         unsigned int freqSlotRadio;      /* Current slot for radio mode */
 259         unsigned int freqSelector;       /* 0=radio 1=television */
 260         int freqDirty;
 261
 262         /* Current tuner info - this information is polled from the I2C bus */
 263         struct v4l2_tuner tuner_signal_info;
 264         int tuner_signal_stale;
 265
 266         /* Video standard handling */
 267         v4l2_std_id std_mask_eeprom; // Hardware supported selections
 268         v4l2_std_id std_mask_avail;  // Which standards we may select from
 269         v4l2_std_id std_mask_cur;    // Currently selected standard(s)
 270         unsigned int std_enum_cnt;   // # of enumerated standards
 271         int std_enum_cur;            // selected standard enumeration value
 272         int std_dirty;               // True if std_mask_cur has changed
 273         struct pvr2_ctl_info std_info_enum;
 274         struct pvr2_ctl_info std_info_avail;
 275         struct pvr2_ctl_info std_info_cur;
 276         struct v4l2_standard *std_defs;
 277         const char **std_enum_names;
 278
 279         // Generated string names, one per actual V4L2 standard
 280         const char *std_mask_ptrs[32];
 281         char std_mask_names[32][10];
 282
 283         int unit_number;             /* ID for driver instance */
 284         unsigned long serial_number; /* ID for hardware itself */
 285
 286         char bus_info[32]; /* Bus location info */
 287
 288         /* Minor numbers used by v4l logic (yes, this is a hack, as there
 289            should be no v4l junk here).  Probably a better way to do this. */
 290         int v4l_minor_number_video;
 291         int v4l_minor_number_vbi;
 292         int v4l_minor_number_radio;
 293
 294         /* Location of eeprom or a negative number if none */
 295         int eeprom_addr;
 296
 297         enum pvr2_config config;
 298
 299         /* Control state needed for cx2341x module */
 300         struct cx2341x_mpeg_params enc_cur_state;
 301         struct cx2341x_mpeg_params enc_ctl_state;
 302         /* True if an encoder attribute has changed */
 303         int enc_stale;
 304         /* True if enc_cur_state is valid */
 305         int enc_cur_valid;
 306
 307         /* Control state */
 308 #define VCREATE_DATA(lab) int lab##_val; int lab##_dirty
 309         VCREATE_DATA(brightness);
 310         VCREATE_DATA(contrast);
 311         VCREATE_DATA(saturation);
 312         VCREATE_DATA(hue);
 313         VCREATE_DATA(volume);
 314         VCREATE_DATA(balance);
 315         VCREATE_DATA(bass);
 316         VCREATE_DATA(treble);
 317         VCREATE_DATA(mute);
 318         VCREATE_DATA(input);
 319         VCREATE_DATA(audiomode);
 320         VCREATE_DATA(res_hor);
 321         VCREATE_DATA(res_ver);
 322         VCREATE_DATA(srate);
 323 #undef VCREATE_DATA
 324
 325         struct pvr2_ctld_info *mpeg_ctrl_info;
 326
 327         struct pvr2_ctrl *controls;
 328         unsigned int control_cnt;
 329 };
 330
 331 /* This function gets the current frequency */
 332 unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *);
 333
 334 #endif /* __PVRUSB2_HDW_INTERNAL_H */
 335
 336 /*
 337   Stuff for Emacs to see, in order to encourage consistent editing style:
 338   *** Local Variables: ***
 339   *** mode: c ***
 340   *** fill-column: 75 ***
 341   *** tab-width: 8 ***
 342   *** c-basic-offset: 8 ***
 343   *** End: ***
 344   */