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

   1 /*
   2  *
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20 #ifndef __PVRUSB2_HDW_INTERNAL_H
  21 #define __PVRUSB2_HDW_INTERNAL_H
  22
  23 /*
  24
  25   This header sets up all the internal structures and definitions needed to
  26   track and coordinate the driver's interaction with the hardware.  ONLY
  27   source files which actually implement part of that whole circus should be
  28   including this header.  Higher levels, like the external layers to the
  29   various public APIs (V4L, sysfs, etc) should NOT ever include this
  30   private, internal header.  This means that pvrusb2-hdw, pvrusb2-encoder,
  31   etc will include this, but pvrusb2-v4l should not.
  32
  33 */
  34
  35 #include <linux/videodev2.h>
  36 #include <linux/i2c.h>
  37 #include <linux/workqueue.h>
  38 #include <linux/mutex.h>
  39 #include "pvrusb2-hdw.h"
  40 #include "pvrusb2-io.h"
  41 #include <media/v4l2-device.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 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_def_value;  /* Get its default value */
  85         pvr2_ctlf_get_value get_min_value;  /* Get minimum allowed value */
  86         pvr2_ctlf_get_value get_max_value;  /* Get maximum allowed value */
  87         pvr2_ctlf_set_value set_value;      /* Set its value */
  88         pvr2_ctlf_check_value check_value;  /* Check that value is valid */
  89         pvr2_ctlf_val_to_sym val_to_sym;    /* Custom convert value->symbol */
  90         pvr2_ctlf_sym_to_val sym_to_val;    /* Custom convert symbol->value */
  91         pvr2_ctlf_is_dirty is_dirty;        /* Return true if dirty */
  92         pvr2_ctlf_clear_dirty clear_dirty;  /* Clear dirty state */
  93         pvr2_ctlf_get_v4lflags get_v4lflags;/* Retrieve v4l flags */
  94
  95         /* Control's type (int, enum, bitmask) */
  96         enum pvr2_ctl_type type;
  97
  98         /* Associated V4L control ID, if any */
  99         int v4l_id;
 100
 101         /* Associated driver internal ID, if any */
 102         int internal_id;
 103
 104         /* Don't implicitly initialize this control's value */
 105         int skip_init;
 106
 107         /* Starting value for this control */
 108         int default_value;
 109
 110         /* Type-specific control information */
 111         union {
 112                 struct { /* Integer control */
 113                         long min_value; /* lower limit */
 114                         long max_value; /* upper limit */
 115                 } type_int;
 116                 struct { /* enumerated control */
 117                         unsigned int count;       /* enum value count */
 118                         const char **value_names; /* symbol names */
 119                 } type_enum;
 120                 struct { /* bitmask control */
 121                         unsigned int valid_bits; /* bits in use */
 122                         const char **bit_names;  /* symbol name/bit */
 123                 } type_bitmask;
 124         } def;
 125 };
 126
 127
 128 /* Same as pvr2_ctl_info, but includes storage for the control description */
 129 #define PVR2_CTLD_INFO_DESC_SIZE 32
 130 struct pvr2_ctld_info {
 131         struct pvr2_ctl_info info;
 132         char desc[PVR2_CTLD_INFO_DESC_SIZE];
 133 };
 134
 135 struct pvr2_ctrl {
 136         const struct pvr2_ctl_info *info;
 137         struct pvr2_hdw *hdw;
 138 };
 139
 140
 141
 142 /* Disposition of firmware1 loading situation */
 143 #define FW1_STATE_UNKNOWN 0
 144 #define FW1_STATE_MISSING 1
 145 #define FW1_STATE_FAILED 2
 146 #define FW1_STATE_RELOAD 3
 147 #define FW1_STATE_OK 4
 148
 149 /* What state the device is in if it is a hybrid */
 150 #define PVR2_PATHWAY_UNKNOWN 0
 151 #define PVR2_PATHWAY_ANALOG 1
 152 #define PVR2_PATHWAY_DIGITAL 2
 153
 154 typedef int (*pvr2_i2c_func)(struct pvr2_hdw *,u8,u8 *,u16,u8 *, u16);
 155 #define PVR2_I2C_FUNC_CNT 128
 156
 157 /* This structure contains all state data directly needed to
 158    manipulate the hardware (as opposed to complying with a kernel
 159    interface) */
 160 struct pvr2_hdw {
 161         /* Underlying USB device handle */
 162         struct usb_device *usb_dev;
 163         struct usb_interface *usb_intf;
 164
 165         /* Our handle into the v4l2 sub-device architecture */
 166         struct v4l2_device v4l2_dev;
 167         /* Device description, anything that must adjust behavior based on
 168            device specific info will use information held here. */
 169         const struct pvr2_device_desc *hdw_desc;
 170
 171         /* Kernel worker thread handling */
 172         struct workqueue_struct *workqueue;
 173         struct work_struct workpoll;     /* Update driver state */
 174
 175         /* Video spigot */
 176         struct pvr2_stream *vid_stream;
 177
 178         /* Mutex for all hardware state control */
 179         struct mutex big_lock_mutex;
 180         int big_lock_held;  /* For debugging */
 181
 182         /* This is a simple string which identifies the instance of this
 183            driver.  It is unique within the set of existing devices, but
 184            there is no attempt to keep the name consistent with the same
 185            physical device each time. */
 186         char name[32];
 187
 188         /* This is a simple string which identifies the physical device
 189            instance itself - if possible.  (If not possible, then it is
 190            based on the specific driver instance, similar to name above.)
 191            The idea here is that userspace might hopefully be able to use
 192            this recognize specific tuners.  It will encode a serial number,
 193            if available. */
 194         char identifier[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
 203         /* IR related */
 204         unsigned int ir_scheme_active; /* IR scheme as seen from the outside */
 205
 206         /* Frequency table */
 207         unsigned int freqTable[FREQTABLE_SIZE];
 208         unsigned int freqProgSlot;
 209
 210         /* Stuff for handling low level control interaction with device */
 211         struct mutex ctl_lock_mutex;
 212         int ctl_lock_held;  /* For debugging */
 213         struct urb *ctl_write_urb;
 214         struct urb *ctl_read_urb;
 215         unsigned char *ctl_write_buffer;
 216         unsigned char *ctl_read_buffer;
 217         int ctl_write_pend_flag;
 218         int ctl_read_pend_flag;
 219         int ctl_timeout_flag;
 220         struct completion ctl_done;
 221         unsigned char cmd_buffer[PVR2_CTL_BUFFSIZE];
 222         int cmd_debug_state;               // Low level command debugging info
 223         unsigned char cmd_debug_code;      //
 224         unsigned int cmd_debug_write_len;  //
 225         unsigned int cmd_debug_read_len;   //
 226
 227         /* Bits of state that describe what is going on with various parts
 228            of the driver. */
 229         int state_pathway_ok;         /* Pathway config is ok */
 230         int state_encoder_ok;         /* Encoder is operational */
 231         int state_encoder_run;        /* Encoder is running */
 232         int state_encoder_config;     /* Encoder is configured */
 233         int state_encoder_waitok;     /* Encoder pre-wait done */
 234         int state_encoder_runok;      /* Encoder has run for >= .25 sec */
 235         int state_decoder_run;        /* Decoder is running */
 236         int state_decoder_ready;      /* Decoder is stabilized & streamable */
 237         int state_usbstream_run;      /* FX2 is streaming */
 238         int state_decoder_quiescent;  /* Decoder idle for minimal interval */
 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 device led is currently on */
 251         int led_on;
 252
 253         /* True if states must be re-evaluated */
 254         int state_stale;
 255
 256         void (*state_func)(void *);
 257         void *state_data;
 258
 259         /* Timer for measuring required decoder settling time before we're
 260            allowed to fire it up again. */
 261         struct timer_list quiescent_timer;
 262
 263         /* Timer for measuring decoder stabilization time, which is the
 264            amount of time we need to let the decoder run before we can
 265            trust its output (otherwise the encoder might see garbage and
 266            then fail to start correctly). */
 267         struct timer_list decoder_stabilization_timer;
 268
 269         /* Timer for measuring encoder pre-wait time */
 270         struct timer_list encoder_wait_timer;
 271
 272         /* Timer for measuring encoder minimum run time */
 273         struct timer_list encoder_run_timer;
 274
 275         /* Place to block while waiting for state changes */
 276         wait_queue_head_t state_wait_data;
 277
 278
 279         int force_dirty;        /* consider all controls dirty if true */
 280         int flag_ok;            /* device in known good state */
 281         int flag_modulefail;    /* true if at least one module failed to load */
 282         int flag_disconnected;  /* flag_ok == 0 due to disconnect */
 283         int flag_init_ok;       /* true if structure is fully initialized */
 284         int fw1_state;          /* current situation with fw1 */
 285         int pathway_state;      /* one of PVR2_PATHWAY_xxx */
 286         int flag_decoder_missed;/* We've noticed missing decoder */
 287         int flag_tripped;       /* Indicates overall failure to start */
 288
 289         unsigned int decoder_client_id;
 290
 291         // CPU firmware info (used to help find / save firmware data)
 292         char *fw_buffer;
 293         unsigned int fw_size;
 294         int fw_cpu_flag; /* True if we are dealing with the CPU */
 295
 296         /* Tuner / frequency control stuff */
 297         unsigned int tuner_type;
 298         int tuner_updated;
 299         unsigned int freqValTelevision;  /* Current freq for tv mode */
 300         unsigned int freqValRadio;       /* Current freq for radio mode */
 301         unsigned int freqSlotTelevision; /* Current slot for tv mode */
 302         unsigned int freqSlotRadio;      /* Current slot for radio mode */
 303         unsigned int freqSelector;       /* 0=radio 1=television */
 304         int freqDirty;
 305
 306         /* Current tuner info - this information is polled from the I2C bus */
 307         struct v4l2_tuner tuner_signal_info;
 308         int tuner_signal_stale;
 309
 310         /* Cropping capability info */
 311         struct v4l2_cropcap cropcap_info;
 312         int cropcap_stale;
 313
 314         /* Video standard handling */
 315         v4l2_std_id std_mask_eeprom; // Hardware supported selections
 316         v4l2_std_id std_mask_avail;  // Which standards we may select from
 317         v4l2_std_id std_mask_cur;    // Currently selected standard(s)
 318         unsigned int std_enum_cnt;   // # of enumerated standards
 319         int std_enum_cur;            // selected standard enumeration value
 320         int std_dirty;               // True if std_mask_cur has changed
 321         struct pvr2_ctl_info std_info_enum;
 322         struct pvr2_ctl_info std_info_avail;
 323         struct pvr2_ctl_info std_info_cur;
 324         struct v4l2_standard *std_defs;
 325         const char **std_enum_names;
 326
 327         // Generated string names, one per actual V4L2 standard
 328         const char *std_mask_ptrs[32];
 329         char std_mask_names[32][10];
 330
 331         int unit_number;             /* ID for driver instance */
 332         unsigned long serial_number; /* ID for hardware itself */
 333
 334         char bus_info[32]; /* Bus location info */
 335
 336         /* Minor numbers used by v4l logic (yes, this is a hack, as there
 337            should be no v4l junk here).  Probably a better way to do this. */
 338         int v4l_minor_number_video;
 339         int v4l_minor_number_vbi;
 340         int v4l_minor_number_radio;
 341
 342         /* Bit mask of PVR2_CVAL_INPUT choices which are valid for the hardware */
 343         unsigned int input_avail_mask;
 344         /* Bit mask of PVR2_CVAL_INPUT choices which are currently allowed */
 345         unsigned int input_allowed_mask;
 346
 347         /* Location of eeprom or a negative number if none */
 348         int eeprom_addr;
 349
 350         enum pvr2_config active_stream_type;
 351         enum pvr2_config desired_stream_type;
 352
 353         /* Control state needed for cx2341x module */
 354         struct cx2341x_mpeg_params enc_cur_state;
 355         struct cx2341x_mpeg_params enc_ctl_state;
 356         /* True if an encoder attribute has changed */
 357         int enc_stale;
 358         /* True if an unsafe encoder attribute has changed */
 359         int enc_unsafe_stale;
 360         /* True if enc_cur_state is valid */
 361         int enc_cur_valid;
 362
 363         /* Control state */
 364 #define VCREATE_DATA(lab) int lab##_val; int lab##_dirty
 365         VCREATE_DATA(brightness);
 366         VCREATE_DATA(contrast);
 367         VCREATE_DATA(saturation);
 368         VCREATE_DATA(hue);
 369         VCREATE_DATA(volume);
 370         VCREATE_DATA(balance);
 371         VCREATE_DATA(bass);
 372         VCREATE_DATA(treble);
 373         VCREATE_DATA(mute);
 374         VCREATE_DATA(cropl);
 375         VCREATE_DATA(cropt);
 376         VCREATE_DATA(cropw);
 377         VCREATE_DATA(croph);
 378         VCREATE_DATA(input);
 379         VCREATE_DATA(audiomode);
 380         VCREATE_DATA(res_hor);
 381         VCREATE_DATA(res_ver);
 382         VCREATE_DATA(srate);
 383 #undef VCREATE_DATA
 384
 385         struct pvr2_ctld_info *mpeg_ctrl_info;
 386
 387         struct pvr2_ctrl *controls;
 388         unsigned int control_cnt;
 389 };
 390
 391 /* This function gets the current frequency */
 392 unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *);
 393
 394 void pvr2_hdw_status_poll(struct pvr2_hdw *);
 395
 396 #endif /* __PVRUSB2_HDW_INTERNAL_H */
 397
 398 /*
 399   Stuff for Emacs to see, in order to encourage consistent editing style:
 400   *** Local Variables: ***
 401   *** mode: c ***
 402   *** fill-column: 75 ***
 403   *** tab-width: 8 ***
 404   *** c-basic-offset: 8 ***
 405   *** End: ***
 406   */