drivers/sbus/char/vfc.h

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