drivers/sbus/char/vfc.h

   1 #ifndef _LINUX_VFC_H_
   2 #define _LINUX_VFC_H_
   3
   4 #include <linux/devfs_fs_kernel.h>
   5
   6 /*
   7  * The control register for the vfc is at offset 0x4000
   8  * The first field ram bank is located at offset 0x5000
   9  * The second field ram bank is at offset 0x7000
  10  * i2c_reg address the Phillips PCF8584(see notes in vfc_i2c.c)
  11  *    data and transmit register.
  12  * i2c_s1 controls register s1 of the PCF8584
  13  * i2c_write seems to be similar to i2c_write but I am not
  14  *    quite sure why sun uses it
  15  *
  16  * I am also not sure whether or not you can read the fram bank as a
  17  * whole or whether you must read each word individually from offset
  18  * 0x5000 as soon as I figure it out I will update this file */
  19
  20 struct vfc_regs {
  21         char pad1[0x4000];
  22         unsigned int control;  /* Offset 0x4000 */
  23         char pad2[0xffb];      /* from offset 0x4004 to 0x5000 */
  24         unsigned int fram_bank1; /* Offset 0x5000 */
  25         char pad3[0xffb];        /* from offset 0x5004 to 0x6000 */
  26         unsigned int i2c_reg; /* Offset 0x6000 */
  27         unsigned int i2c_magic2; /* Offset 0x6004 */
  28         unsigned int i2c_s1;  /* Offset 0x6008 */
  29         unsigned int i2c_write; /* Offset 0x600c */
  30         char pad4[0xff0];     /* from offset 0x6010 to 0x7000 */
  31         unsigned int fram_bank2; /* Offset 0x7000 */
  32         char pad5[0x1000];
  33 };
  34
  35 #define VFC_SAA9051_NR (13)
  36 #define VFC_SAA9051_ADDR (0x8a)
  37         /* The saa9051 returns the following for its status
  38          * bit 0 - 0
  39          * bit 1 - SECAM color detected (1=found,0=not found)
  40          * bit 2 - COLOR detected (1=found,0=not found)
  41          * bit 3 - 0
  42          * bit 4 - Field frequency bit (1=60Hz (NTSC), 0=50Hz (PAL))
  43          * bit 5 - 1
  44          * bit 6 - horizontal frequency lock (1=transmitter found,
  45          *                                    0=no transmitter)
  46          * bit 7 - Power on reset bit (1=reset,0=at least one successful
  47          *                                       read of the status byte)
  48          */
  49
  50 #define VFC_SAA9051_PONRES (0x80)
  51 #define VFC_SAA9051_HLOCK (0x40)
  52 #define VFC_SAA9051_FD (0x10)
  53 #define VFC_SAA9051_CD (0x04)
  54 #define VFC_SAA9051_CS (0x02)
  55
  56
  57 /* The various saa9051 sub addresses */
  58
  59 #define VFC_SAA9051_IDEL (0)
  60 #define VFC_SAA9051_HSY_START (1)
  61 #define VFC_SAA9051_HSY_STOP (2)
  62 #define VFC_SAA9051_HC_START (3)
  63 #define VFC_SAA9051_HC_STOP (4)
  64 #define VFC_SAA9051_HS_START (5)
  65 #define VFC_SAA9051_HORIZ_PEAK (6)
  66 #define VFC_SAA9051_HUE (7)
  67 #define VFC_SAA9051_C1 (8)
  68 #define VFC_SAA9051_C2 (9)
  69 #define VFC_SAA9051_C3 (0xa)
  70 #define VFC_SAA9051_SECAM_DELAY (0xb)
  71
  72
  73 /* Bit settings for saa9051 sub address 0x06 */
  74
  75 #define VFC_SAA9051_AP1 (0x01)
  76 #define VFC_SAA9051_AP2 (0x02)
  77 #define VFC_SAA9051_COR1 (0x04)
  78 #define VFC_SAA9051_COR2 (0x08)
  79 #define VFC_SAA9051_BP1 (0x10)
  80 #define VFC_SAA9051_BP2 (0x20)
  81 #define VFC_SAA9051_PF (0x40)
  82 #define VFC_SAA9051_BY (0x80)
  83
  84
  85 /* Bit settings for saa9051 sub address 0x08 */
  86
  87 #define VFC_SAA9051_CCFR0 (0x01)
  88 #define VFC_SAA9051_CCFR1 (0x02)
  89 #define VFC_SAA9051_YPN (0x04)
  90 #define VFC_SAA9051_ALT (0x08)
  91 #define VFC_SAA9051_CO (0x10)
  92 #define VFC_SAA9051_VTR (0x20)
  93 #define VFC_SAA9051_FS (0x40)
  94 #define VFC_SAA9051_HPLL (0x80)
  95
  96
  97 /* Bit settings for saa9051 sub address 9 */
  98
  99 #define VFC_SAA9051_SS0 (0x01)
 100 #define VFC_SAA9051_SS1 (0x02)
 101 #define VFC_SAA9051_AFCC (0x04)
 102 #define VFC_SAA9051_CI (0x08)
 103 #define VFC_SAA9051_SA9D4 (0x10) /* Don't care bit */
 104 #define VFC_SAA9051_OEC (0x20)
 105 #define VFC_SAA9051_OEY (0x40)
 106 #define VFC_SAA9051_VNL (0x80)
 107
 108
 109 /* Bit settings for saa9051 sub address 0x0A */
 110
 111 #define VFC_SAA9051_YDL0 (0x01)
 112 #define VFC_SAA9051_YDL1 (0x02)
 113 #define VFC_SAA9051_YDL2 (0x04)
 114 #define VFC_SAA9051_SS2 (0x08)
 115 #define VFC_SAA9051_SS3 (0x10)
 116 #define VFC_SAA9051_YC (0x20)
 117 #define VFC_SAA9051_CT (0x40)
 118 #define VFC_SAA9051_SYC (0x80)
 119
 120
 121 #define VFC_SAA9051_SA(a,b) ((a)->saa9051_state_array[(b)+1])
 122 #define vfc_update_saa9051(a) (vfc_i2c_sendbuf((a),VFC_SAA9051_ADDR,\
 123                                             (a)->saa9051_state_array,\
 124                                             VFC_SAA9051_NR))
 125
 126
 127 struct vfc_dev {
 128         volatile struct vfc_regs *regs;
 129         struct vfc_regs *phys_regs;
 130         unsigned int control_reg;
 131         struct semaphore device_lock_sem;
 132         struct timer_list poll_timer;
 133         wait_queue_head_t poll_wait;
 134         int instance;
 135         int busy;
 136         unsigned long which_io;
 137         unsigned char saa9051_state_array[VFC_SAA9051_NR];
 138 };
 139
 140 extern struct vfc_dev **vfc_dev_lst;
 141
 142 void captstat_reset(struct vfc_dev *);
 143 void memptr_reset(struct vfc_dev *);
 144
 145 int vfc_pcf8584_init(struct vfc_dev *);
 146 void vfc_i2c_delay_no_busy(struct vfc_dev *, unsigned long);
 147 void vfc_i2c_delay(struct vfc_dev *);
 148 int vfc_i2c_sendbuf(struct vfc_dev *, unsigned char, char *, int) ;
 149 int vfc_i2c_recvbuf(struct vfc_dev *, unsigned char, char *, int) ;
 150 int vfc_i2c_reset_bus(struct vfc_dev *);
 151 int vfc_init_i2c_bus(struct vfc_dev *);
 152 void vfc_lock_device(struct vfc_dev *);
 153 void vfc_unlock_device(struct vfc_dev *);
 154
 155 #define VFC_CONTROL_DIAGMODE  0x10000000
 156 #define VFC_CONTROL_MEMPTR    0x20000000
 157 #define VFC_CONTROL_CAPTURE   0x02000000
 158 #define VFC_CONTROL_CAPTRESET 0x04000000
 159
 160 #define VFC_STATUS_CAPTURE    0x08000000
 161
 162 #ifdef VFC_IOCTL_DEBUG
 163 #define VFC_IOCTL_DEBUG_PRINTK(a) printk a
 164 #else
 165 #define VFC_IOCTL_DEBUG_PRINTK(a)
 166 #endif
 167
 168 #ifdef VFC_I2C_DEBUG
 169 #define VFC_I2C_DEBUG_PRINTK(a) printk a
 170 #else
 171 #define VFC_I2C_DEBUG_PRINTK(a)
 172 #endif
 173
 174 #endif /* _LINUX_VFC_H_ */
 175
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