include/media/saa7146.h

   1 #ifndef __SAA7146__
   2 #define __SAA7146__
   3
   4 #include <linux/delay.h>        /* for delay-stuff */
   5 #include <linux/slab.h>         /* for kmalloc/kfree */
   6 #include <linux/pci.h>          /* for pci-config-stuff, vendor ids etc. */
   7 #include <linux/init.h>         /* for "__init" */
   8 #include <linux/interrupt.h>    /* for IMMEDIATE_BH */
   9 #include <linux/kmod.h>         /* for kernel module loader */
  10 #include <linux/i2c.h>          /* for i2c subsystem */
  11 #include <asm/io.h>             /* for accessing devices */
  12 #include <linux/stringify.h>
  13 #include <linux/mutex.h>
  14 #include <linux/scatterlist.h>
  15 #include <media/v4l2-device.h>
  16
  17 #include <linux/vmalloc.h>      /* for vmalloc() */
  18 #include <linux/mm.h>           /* for vmalloc_to_page() */
  19
  20 #define SAA7146_VERSION_CODE 0x000600   /* 0.6.0 */
  21
  22 #define saa7146_write(sxy,adr,dat)    writel((dat),(sxy->mem+(adr)))
  23 #define saa7146_read(sxy,adr)         readl(sxy->mem+(adr))
  24
  25 extern unsigned int saa7146_debug;
  26
  27 #ifndef DEBUG_VARIABLE
  28         #define DEBUG_VARIABLE saa7146_debug
  29 #endif
  30
  31 #define ERR(fmt, ...)   pr_err("%s: " fmt, __func__, ##__VA_ARGS__)
  32
  33 #define _DBG(mask, fmt, ...)                                            \
  34 do {                                                                    \
  35         if (DEBUG_VARIABLE & mask)                                      \
  36                 pr_debug("%s(): " fmt, __func__, ##__VA_ARGS__);        \
  37 } while (0)
  38
  39 /* simple debug messages */
  40 #define DEB_S(fmt, ...)         _DBG(0x01, fmt, ##__VA_ARGS__)
  41 /* more detailed debug messages */
  42 #define DEB_D(fmt, ...)         _DBG(0x02, fmt, ##__VA_ARGS__)
  43 /* print enter and exit of functions */
  44 #define DEB_EE(fmt, ...)        _DBG(0x04, fmt, ##__VA_ARGS__)
  45 /* i2c debug messages */
  46 #define DEB_I2C(fmt, ...)       _DBG(0x08, fmt, ##__VA_ARGS__)
  47 /* vbi debug messages */
  48 #define DEB_VBI(fmt, ...)       _DBG(0x10, fmt, ##__VA_ARGS__)
  49 /* interrupt debug messages */
  50 #define DEB_INT(fmt, ...)       _DBG(0x20, fmt, ##__VA_ARGS__)
  51 /* capture debug messages */
  52 #define DEB_CAP(fmt, ...)       _DBG(0x40, fmt, ##__VA_ARGS__)
  53
  54 #define SAA7146_ISR_CLEAR(x,y) \
  55         saa7146_write(x, ISR, (y));
  56
  57 struct module;
  58
  59 struct saa7146_dev;
  60 struct saa7146_extension;
  61 struct saa7146_vv;
  62
  63 /* saa7146 page table */
  64 struct saa7146_pgtable {
  65         unsigned int    size;
  66         __le32          *cpu;
  67         dma_addr_t      dma;
  68         /* used for offsets for u,v planes for planar capture modes */
  69         unsigned long   offset;
  70         /* used for custom pagetables (used for example by budget dvb cards) */
  71         struct scatterlist *slist;
  72         int             nents;
  73 };
  74
  75 struct saa7146_pci_extension_data {
  76         struct saa7146_extension *ext;
  77         void *ext_priv;                 /* most likely a name string */
  78 };
  79
  80 #define MAKE_EXTENSION_PCI(x_var, x_vendor, x_device)           \
  81         {                                                       \
  82                 .vendor    = PCI_VENDOR_ID_PHILIPS,             \
  83                 .device    = PCI_DEVICE_ID_PHILIPS_SAA7146,     \
  84                 .subvendor = x_vendor,                          \
  85                 .subdevice = x_device,                          \
  86                 .driver_data = (unsigned long)& x_var,          \
  87         }
  88
  89 struct saa7146_extension
  90 {
  91         char    name[32];               /* name of the device */
  92 #define SAA7146_USE_I2C_IRQ     0x1
  93 #define SAA7146_I2C_SHORT_DELAY 0x2
  94         int     flags;
  95
  96         /* pairs of subvendor and subdevice ids for
  97            supported devices, last entry 0xffff, 0xfff */
  98         struct module *module;
  99         struct pci_driver driver;
 100         struct pci_device_id *pci_tbl;
 101
 102         /* extension functions */
 103         int (*probe)(struct saa7146_dev *);
 104         int (*attach)(struct saa7146_dev *, struct saa7146_pci_extension_data *);
 105         int (*detach)(struct saa7146_dev*);
 106
 107         u32     irq_mask;       /* mask to indicate, which irq-events are handled by the extension */
 108         void    (*irq_func)(struct saa7146_dev*, u32* irq_mask);
 109 };
 110
 111 struct saa7146_dma
 112 {
 113         dma_addr_t      dma_handle;
 114         __le32          *cpu_addr;
 115 };
 116
 117 struct saa7146_dev
 118 {
 119         struct module                   *module;
 120
 121         struct list_head                item;
 122
 123         struct v4l2_device              v4l2_dev;
 124
 125         /* different device locks */
 126         spinlock_t                      slock;
 127         struct mutex                    v4l2_lock;
 128
 129         unsigned char                   __iomem *mem;           /* pointer to mapped IO memory */
 130         u32                             revision;       /* chip revision; needed for bug-workarounds*/
 131
 132         /* pci-device & irq stuff*/
 133         char                            name[32];
 134         struct pci_dev                  *pci;
 135         u32                             int_todo;
 136         spinlock_t                      int_slock;
 137
 138         /* extension handling */
 139         struct saa7146_extension        *ext;           /* indicates if handled by extension */
 140         void                            *ext_priv;      /* pointer for extension private use (most likely some private data) */
 141         struct saa7146_ext_vv           *ext_vv_data;
 142
 143         /* per device video/vbi informations (if available) */
 144         struct saa7146_vv       *vv_data;
 145         void (*vv_callback)(struct saa7146_dev *dev, unsigned long status);
 146
 147         /* i2c-stuff */
 148         struct mutex                    i2c_lock;
 149
 150         u32                             i2c_bitrate;
 151         struct saa7146_dma              d_i2c;  /* pointer to i2c memory */
 152         wait_queue_head_t               i2c_wq;
 153         int                             i2c_op;
 154
 155         /* memories */
 156         struct saa7146_dma              d_rps0;
 157         struct saa7146_dma              d_rps1;
 158 };
 159
 160 static inline struct saa7146_dev *to_saa7146_dev(struct v4l2_device *v4l2_dev)
 161 {
 162         return container_of(v4l2_dev, struct saa7146_dev, v4l2_dev);
 163 }
 164
 165 /* from saa7146_i2c.c */
 166 int saa7146_i2c_adapter_prepare(struct saa7146_dev *dev, struct i2c_adapter *i2c_adapter, u32 bitrate);
 167
 168 /* from saa7146_core.c */
 169 extern struct list_head saa7146_devices;
 170 extern struct mutex saa7146_devices_lock;
 171 int saa7146_register_extension(struct saa7146_extension*);
 172 int saa7146_unregister_extension(struct saa7146_extension*);
 173 struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc);
 174 int saa7146_pgtable_alloc(struct pci_dev *pci, struct saa7146_pgtable *pt);
 175 void saa7146_pgtable_free(struct pci_dev *pci, struct saa7146_pgtable *pt);
 176 int saa7146_pgtable_build_single(struct pci_dev *pci, struct saa7146_pgtable *pt, struct scatterlist *list, int length );
 177 void *saa7146_vmalloc_build_pgtable(struct pci_dev *pci, long length, struct saa7146_pgtable *pt);
 178 void saa7146_vfree_destroy_pgtable(struct pci_dev *pci, void *mem, struct saa7146_pgtable *pt);
 179 void saa7146_setgpio(struct saa7146_dev *dev, int port, u32 data);
 180 int saa7146_wait_for_debi_done(struct saa7146_dev *dev, int nobusyloop);
 181
 182 /* some memory sizes */
 183 #define SAA7146_I2C_MEM         ( 1*PAGE_SIZE)
 184 #define SAA7146_RPS_MEM         ( 1*PAGE_SIZE)
 185
 186 /* some i2c constants */
 187 #define SAA7146_I2C_TIMEOUT     100     /* i2c-timeout-value in ms */
 188 #define SAA7146_I2C_RETRIES     3       /* how many times shall we retry an i2c-operation? */
 189 #define SAA7146_I2C_DELAY       5       /* time we wait after certain i2c-operations */
 190
 191 /* unsorted defines */
 192 #define ME1    0x0000000800
 193 #define PV1    0x0000000008
 194
 195 /* gpio defines */
 196 #define SAA7146_GPIO_INPUT 0x00
 197 #define SAA7146_GPIO_IRQHI 0x10
 198 #define SAA7146_GPIO_IRQLO 0x20
 199 #define SAA7146_GPIO_IRQHL 0x30
 200 #define SAA7146_GPIO_OUTLO 0x40
 201 #define SAA7146_GPIO_OUTHI 0x50
 202
 203 /* debi defines */
 204 #define DEBINOSWAP 0x000e0000
 205
 206 /* define for the register programming sequencer (rps) */
 207 #define CMD_NOP         0x00000000  /* No operation */
 208 #define CMD_CLR_EVENT   0x00000000  /* Clear event */
 209 #define CMD_SET_EVENT   0x10000000  /* Set signal event */
 210 #define CMD_PAUSE       0x20000000  /* Pause */
 211 #define CMD_CHECK_LATE  0x30000000  /* Check late */
 212 #define CMD_UPLOAD      0x40000000  /* Upload */
 213 #define CMD_STOP        0x50000000  /* Stop */
 214 #define CMD_INTERRUPT   0x60000000  /* Interrupt */
 215 #define CMD_JUMP        0x80000000  /* Jump */
 216 #define CMD_WR_REG      0x90000000  /* Write (load) register */
 217 #define CMD_RD_REG      0xa0000000  /* Read (store) register */
 218 #define CMD_WR_REG_MASK 0xc0000000  /* Write register with mask */
 219
 220 #define CMD_OAN         MASK_27
 221 #define CMD_INV         MASK_26
 222 #define CMD_SIG4        MASK_25
 223 #define CMD_SIG3        MASK_24
 224 #define CMD_SIG2        MASK_23
 225 #define CMD_SIG1        MASK_22
 226 #define CMD_SIG0        MASK_21
 227 #define CMD_O_FID_B     MASK_14
 228 #define CMD_E_FID_B     MASK_13
 229 #define CMD_O_FID_A     MASK_12
 230 #define CMD_E_FID_A     MASK_11
 231
 232 /* some events and command modifiers for rps1 squarewave generator */
 233 #define EVT_HS          (1<<15)     // Source Line Threshold reached
 234 #define EVT_VBI_B       (1<<9)      // VSYNC Event
 235 #define RPS_OAN         (1<<27)     // 1: OR events, 0: AND events
 236 #define RPS_INV         (1<<26)     // Invert (compound) event
 237 #define GPIO3_MSK       0xFF000000  // GPIO #3 control bits
 238
 239 /* Bit mask constants */
 240 #define MASK_00   0x00000001    /* Mask value for bit 0 */
 241 #define MASK_01   0x00000002    /* Mask value for bit 1 */
 242 #define MASK_02   0x00000004    /* Mask value for bit 2 */
 243 #define MASK_03   0x00000008    /* Mask value for bit 3 */
 244 #define MASK_04   0x00000010    /* Mask value for bit 4 */
 245 #define MASK_05   0x00000020    /* Mask value for bit 5 */
 246 #define MASK_06   0x00000040    /* Mask value for bit 6 */
 247 #define MASK_07   0x00000080    /* Mask value for bit 7 */
 248 #define MASK_08   0x00000100    /* Mask value for bit 8 */
 249 #define MASK_09   0x00000200    /* Mask value for bit 9 */
 250 #define MASK_10   0x00000400    /* Mask value for bit 10 */
 251 #define MASK_11   0x00000800    /* Mask value for bit 11 */
 252 #define MASK_12   0x00001000    /* Mask value for bit 12 */
 253 #define MASK_13   0x00002000    /* Mask value for bit 13 */
 254 #define MASK_14   0x00004000    /* Mask value for bit 14 */
 255 #define MASK_15   0x00008000    /* Mask value for bit 15 */
 256 #define MASK_16   0x00010000    /* Mask value for bit 16 */
 257 #define MASK_17   0x00020000    /* Mask value for bit 17 */
 258 #define MASK_18   0x00040000    /* Mask value for bit 18 */
 259 #define MASK_19   0x00080000    /* Mask value for bit 19 */
 260 #define MASK_20   0x00100000    /* Mask value for bit 20 */
 261 #define MASK_21   0x00200000    /* Mask value for bit 21 */
 262 #define MASK_22   0x00400000    /* Mask value for bit 22 */
 263 #define MASK_23   0x00800000    /* Mask value for bit 23 */
 264 #define MASK_24   0x01000000    /* Mask value for bit 24 */
 265 #define MASK_25   0x02000000    /* Mask value for bit 25 */
 266 #define MASK_26   0x04000000    /* Mask value for bit 26 */
 267 #define MASK_27   0x08000000    /* Mask value for bit 27 */
 268 #define MASK_28   0x10000000    /* Mask value for bit 28 */
 269 #define MASK_29   0x20000000    /* Mask value for bit 29 */
 270 #define MASK_30   0x40000000    /* Mask value for bit 30 */
 271 #define MASK_31   0x80000000    /* Mask value for bit 31 */
 272
 273 #define MASK_B0   0x000000ff    /* Mask value for byte 0 */
 274 #define MASK_B1   0x0000ff00    /* Mask value for byte 1 */
 275 #define MASK_B2   0x00ff0000    /* Mask value for byte 2 */
 276 #define MASK_B3   0xff000000    /* Mask value for byte 3 */
 277
 278 #define MASK_W0   0x0000ffff    /* Mask value for word 0 */
 279 #define MASK_W1   0xffff0000    /* Mask value for word 1 */
 280
 281 #define MASK_PA   0xfffffffc    /* Mask value for physical address */
 282 #define MASK_PR   0xfffffffe    /* Mask value for protection register */
 283 #define MASK_ER   0xffffffff    /* Mask value for the entire register */
 284
 285 #define MASK_NONE 0x00000000    /* No mask */
 286
 287 /* register aliases */
 288 #define BASE_ODD1         0x00  /* Video DMA 1 registers  */
 289 #define BASE_EVEN1        0x04
 290 #define PROT_ADDR1        0x08
 291 #define PITCH1            0x0C
 292 #define BASE_PAGE1        0x10  /* Video DMA 1 base page */
 293 #define NUM_LINE_BYTE1    0x14
 294
 295 #define BASE_ODD2         0x18  /* Video DMA 2 registers */
 296 #define BASE_EVEN2        0x1C
 297 #define PROT_ADDR2        0x20
 298 #define PITCH2            0x24
 299 #define BASE_PAGE2        0x28  /* Video DMA 2 base page */
 300 #define NUM_LINE_BYTE2    0x2C
 301
 302 #define BASE_ODD3         0x30  /* Video DMA 3 registers */
 303 #define BASE_EVEN3        0x34
 304 #define PROT_ADDR3        0x38
 305 #define PITCH3            0x3C
 306 #define BASE_PAGE3        0x40  /* Video DMA 3 base page */
 307 #define NUM_LINE_BYTE3    0x44
 308
 309 #define PCI_BT_V1         0x48  /* Video/FIFO 1 */
 310 #define PCI_BT_V2         0x49  /* Video/FIFO 2 */
 311 #define PCI_BT_V3         0x4A  /* Video/FIFO 3 */
 312 #define PCI_BT_DEBI       0x4B  /* DEBI */
 313 #define PCI_BT_A          0x4C  /* Audio */
 314
 315 #define DD1_INIT          0x50  /* Init setting of DD1 interface */
 316
 317 #define DD1_STREAM_B      0x54  /* DD1 B video data stream handling */
 318 #define DD1_STREAM_A      0x56  /* DD1 A video data stream handling */
 319
 320 #define BRS_CTRL          0x58  /* BRS control register */
 321 #define HPS_CTRL          0x5C  /* HPS control register */
 322 #define HPS_V_SCALE       0x60  /* HPS vertical scale */
 323 #define HPS_V_GAIN        0x64  /* HPS vertical ACL and gain */
 324 #define HPS_H_PRESCALE    0x68  /* HPS horizontal prescale   */
 325 #define HPS_H_SCALE       0x6C  /* HPS horizontal scale */
 326 #define BCS_CTRL          0x70  /* BCS control */
 327 #define CHROMA_KEY_RANGE  0x74
 328 #define CLIP_FORMAT_CTRL  0x78  /* HPS outputs formats & clipping */
 329
 330 #define DEBI_CONFIG       0x7C
 331 #define DEBI_COMMAND      0x80
 332 #define DEBI_PAGE         0x84
 333 #define DEBI_AD           0x88
 334
 335 #define I2C_TRANSFER      0x8C
 336 #define I2C_STATUS        0x90
 337
 338 #define BASE_A1_IN        0x94  /* Audio 1 input DMA */
 339 #define PROT_A1_IN        0x98
 340 #define PAGE_A1_IN        0x9C
 341
 342 #define BASE_A1_OUT       0xA0  /* Audio 1 output DMA */
 343 #define PROT_A1_OUT       0xA4
 344 #define PAGE_A1_OUT       0xA8
 345
 346 #define BASE_A2_IN        0xAC  /* Audio 2 input DMA */
 347 #define PROT_A2_IN        0xB0
 348 #define PAGE_A2_IN        0xB4
 349
 350 #define BASE_A2_OUT       0xB8  /* Audio 2 output DMA */
 351 #define PROT_A2_OUT       0xBC
 352 #define PAGE_A2_OUT       0xC0
 353
 354 #define RPS_PAGE0         0xC4  /* RPS task 0 page register */
 355 #define RPS_PAGE1         0xC8  /* RPS task 1 page register */
 356
 357 #define RPS_THRESH0       0xCC  /* HBI threshold for task 0 */
 358 #define RPS_THRESH1       0xD0  /* HBI threshold for task 1 */
 359
 360 #define RPS_TOV0          0xD4  /* RPS timeout for task 0 */
 361 #define RPS_TOV1          0xD8  /* RPS timeout for task 1 */
 362
 363 #define IER               0xDC  /* Interrupt enable register */
 364
 365 #define GPIO_CTRL         0xE0  /* GPIO 0-3 register */
 366
 367 #define EC1SSR            0xE4  /* Event cnt set 1 source select */
 368 #define EC2SSR            0xE8  /* Event cnt set 2 source select */
 369 #define ECT1R             0xEC  /* Event cnt set 1 thresholds */
 370 #define ECT2R             0xF0  /* Event cnt set 2 thresholds */
 371
 372 #define ACON1             0xF4
 373 #define ACON2             0xF8
 374
 375 #define MC1               0xFC   /* Main control register 1 */
 376 #define MC2               0x100  /* Main control register 2  */
 377
 378 #define RPS_ADDR0         0x104  /* RPS task 0 address register */
 379 #define RPS_ADDR1         0x108  /* RPS task 1 address register */
 380
 381 #define ISR               0x10C  /* Interrupt status register */
 382 #define PSR               0x110  /* Primary status register */
 383 #define SSR               0x114  /* Secondary status register */
 384
 385 #define EC1R              0x118  /* Event counter set 1 register */
 386 #define EC2R              0x11C  /* Event counter set 2 register */
 387
 388 #define PCI_VDP1          0x120  /* Video DMA pointer of FIFO 1 */
 389 #define PCI_VDP2          0x124  /* Video DMA pointer of FIFO 2 */
 390 #define PCI_VDP3          0x128  /* Video DMA pointer of FIFO 3 */
 391 #define PCI_ADP1          0x12C  /* Audio DMA pointer of audio out 1 */
 392 #define PCI_ADP2          0x130  /* Audio DMA pointer of audio in 1 */
 393 #define PCI_ADP3          0x134  /* Audio DMA pointer of audio out 2 */
 394 #define PCI_ADP4          0x138  /* Audio DMA pointer of audio in 2 */
 395 #define PCI_DMA_DDP       0x13C  /* DEBI DMA pointer */
 396
 397 #define LEVEL_REP         0x140,
 398 #define A_TIME_SLOT1      0x180,  /* from 180 - 1BC */
 399 #define A_TIME_SLOT2      0x1C0,  /* from 1C0 - 1FC */
 400
 401 /* isr masks */
 402 #define SPCI_PPEF       0x80000000  /* PCI parity error */
 403 #define SPCI_PABO       0x40000000  /* PCI access error (target or master abort) */
 404 #define SPCI_PPED       0x20000000  /* PCI parity error on 'real time data' */
 405 #define SPCI_RPS_I1     0x10000000  /* Interrupt issued by RPS1 */
 406 #define SPCI_RPS_I0     0x08000000  /* Interrupt issued by RPS0 */
 407 #define SPCI_RPS_LATE1  0x04000000  /* RPS task 1 is late */
 408 #define SPCI_RPS_LATE0  0x02000000  /* RPS task 0 is late */
 409 #define SPCI_RPS_E1     0x01000000  /* RPS error from task 1 */
 410 #define SPCI_RPS_E0     0x00800000  /* RPS error from task 0 */
 411 #define SPCI_RPS_TO1    0x00400000  /* RPS timeout task 1 */
 412 #define SPCI_RPS_TO0    0x00200000  /* RPS timeout task 0 */
 413 #define SPCI_UPLD       0x00100000  /* RPS in upload */
 414 #define SPCI_DEBI_S     0x00080000  /* DEBI status */
 415 #define SPCI_DEBI_E     0x00040000  /* DEBI error */
 416 #define SPCI_IIC_S      0x00020000  /* I2C status */
 417 #define SPCI_IIC_E      0x00010000  /* I2C error */
 418 #define SPCI_A2_IN      0x00008000  /* Audio 2 input DMA protection / limit */
 419 #define SPCI_A2_OUT     0x00004000  /* Audio 2 output DMA protection / limit */
 420 #define SPCI_A1_IN      0x00002000  /* Audio 1 input DMA protection / limit */
 421 #define SPCI_A1_OUT     0x00001000  /* Audio 1 output DMA protection / limit */
 422 #define SPCI_AFOU       0x00000800  /* Audio FIFO over- / underflow */
 423 #define SPCI_V_PE       0x00000400  /* Video protection address */
 424 #define SPCI_VFOU       0x00000200  /* Video FIFO over- / underflow */
 425 #define SPCI_FIDA       0x00000100  /* Field ID video port A */
 426 #define SPCI_FIDB       0x00000080  /* Field ID video port B */
 427 #define SPCI_PIN3       0x00000040  /* GPIO pin 3 */
 428 #define SPCI_PIN2       0x00000020  /* GPIO pin 2 */
 429 #define SPCI_PIN1       0x00000010  /* GPIO pin 1 */
 430 #define SPCI_PIN0       0x00000008  /* GPIO pin 0 */
 431 #define SPCI_ECS        0x00000004  /* Event counter 1, 2, 4, 5 */
 432 #define SPCI_EC3S       0x00000002  /* Event counter 3 */
 433 #define SPCI_EC0S       0x00000001  /* Event counter 0 */
 434
 435 /* i2c */
 436 #define SAA7146_I2C_ABORT       (1<<7)
 437 #define SAA7146_I2C_SPERR       (1<<6)
 438 #define SAA7146_I2C_APERR       (1<<5)
 439 #define SAA7146_I2C_DTERR       (1<<4)
 440 #define SAA7146_I2C_DRERR       (1<<3)
 441 #define SAA7146_I2C_AL          (1<<2)
 442 #define SAA7146_I2C_ERR         (1<<1)
 443 #define SAA7146_I2C_BUSY        (1<<0)
 444
 445 #define SAA7146_I2C_START       (0x3)
 446 #define SAA7146_I2C_CONT        (0x2)
 447 #define SAA7146_I2C_STOP        (0x1)
 448 #define SAA7146_I2C_NOP         (0x0)
 449
 450 #define SAA7146_I2C_BUS_BIT_RATE_6400   (0x500)
 451 #define SAA7146_I2C_BUS_BIT_RATE_3200   (0x100)
 452 #define SAA7146_I2C_BUS_BIT_RATE_480    (0x400)
 453 #define SAA7146_I2C_BUS_BIT_RATE_320    (0x600)
 454 #define SAA7146_I2C_BUS_BIT_RATE_240    (0x700)
 455 #define SAA7146_I2C_BUS_BIT_RATE_120    (0x000)
 456 #define SAA7146_I2C_BUS_BIT_RATE_80     (0x200)
 457 #define SAA7146_I2C_BUS_BIT_RATE_60     (0x300)
 458
 459 static inline void SAA7146_IER_DISABLE(struct saa7146_dev *x, unsigned y)
 460 {
 461         unsigned long flags;
 462         spin_lock_irqsave(&x->int_slock, flags);
 463         saa7146_write(x, IER, saa7146_read(x, IER) & ~y);
 464         spin_unlock_irqrestore(&x->int_slock, flags);
 465 }
 466
 467 static inline void SAA7146_IER_ENABLE(struct saa7146_dev *x, unsigned y)
 468 {
 469         unsigned long flags;
 470         spin_lock_irqsave(&x->int_slock, flags);
 471         saa7146_write(x, IER, saa7146_read(x, IER) | y);
 472         spin_unlock_irqrestore(&x->int_slock, flags);
 473 }
 474
 475 #endif