diff options
Diffstat (limited to 'drivers/sbus/char/vfc.h')
| -rw-r--r-- | drivers/sbus/char/vfc.h | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/sbus/char/vfc.h b/drivers/sbus/char/vfc.h new file mode 100644 index 000000000000..e56a43af0f62 --- /dev/null +++ b/drivers/sbus/char/vfc.h @@ -0,0 +1,179 @@ +#ifndef _LINUX_VFC_H_ +#define _LINUX_VFC_H_ + +#include <linux/devfs_fs_kernel.h> + +/* + * The control register for the vfc is at offset 0x4000 + * The first field ram bank is located at offset 0x5000 + * The second field ram bank is at offset 0x7000 + * i2c_reg address the Phillips PCF8584(see notes in vfc_i2c.c) + * data and transmit register. + * i2c_s1 controls register s1 of the PCF8584 + * i2c_write seems to be similar to i2c_write but I am not + * quite sure why sun uses it + * + * I am also not sure whether or not you can read the fram bank as a + * whole or whether you must read each word individually from offset + * 0x5000 as soon as I figure it out I will update this file */ + +struct vfc_regs { + char pad1[0x4000]; + unsigned int control; /* Offset 0x4000 */ + char pad2[0xffb]; /* from offset 0x4004 to 0x5000 */ + unsigned int fram_bank1; /* Offset 0x5000 */ + char pad3[0xffb]; /* from offset 0x5004 to 0x6000 */ + unsigned int i2c_reg; /* Offset 0x6000 */ + unsigned int i2c_magic2; /* Offset 0x6004 */ + unsigned int i2c_s1; /* Offset 0x6008 */ + unsigned int i2c_write; /* Offset 0x600c */ + char pad4[0xff0]; /* from offset 0x6010 to 0x7000 */ + unsigned int fram_bank2; /* Offset 0x7000 */ + char pad5[0x1000]; +}; + +#define VFC_SAA9051_NR (13) +#define VFC_SAA9051_ADDR (0x8a) + /* The saa9051 returns the following for its status + * bit 0 - 0 + * bit 1 - SECAM color detected (1=found,0=not found) + * bit 2 - COLOR detected (1=found,0=not found) + * bit 3 - 0 + * bit 4 - Field frequency bit (1=60Hz (NTSC), 0=50Hz (PAL)) + * bit 5 - 1 + * bit 6 - horizontal frequency lock (1=transmitter found, + * 0=no transmitter) + * bit 7 - Power on reset bit (1=reset,0=at least one successful + * read of the status byte) + */ + +#define VFC_SAA9051_PONRES (0x80) +#define VFC_SAA9051_HLOCK (0x40) +#define VFC_SAA9051_FD (0x10) +#define VFC_SAA9051_CD (0x04) +#define VFC_SAA9051_CS (0x02) + + +/* The various saa9051 sub addresses */ + +#define VFC_SAA9051_IDEL (0) +#define VFC_SAA9051_HSY_START (1) +#define VFC_SAA9051_HSY_STOP (2) +#define VFC_SAA9051_HC_START (3) +#define VFC_SAA9051_HC_STOP (4) +#define VFC_SAA9051_HS_START (5) +#define VFC_SAA9051_HORIZ_PEAK (6) +#define VFC_SAA9051_HUE (7) +#define VFC_SAA9051_C1 (8) +#define VFC_SAA9051_C2 (9) +#define VFC_SAA9051_C3 (0xa) +#define VFC_SAA9051_SECAM_DELAY (0xb) + + +/* Bit settings for saa9051 sub address 0x06 */ + +#define VFC_SAA9051_AP1 (0x01) +#define VFC_SAA9051_AP2 (0x02) +#define VFC_SAA9051_COR1 (0x04) +#define VFC_SAA9051_COR2 (0x08) +#define VFC_SAA9051_BP1 (0x10) +#define VFC_SAA9051_BP2 (0x20) +#define VFC_SAA9051_PF (0x40) +#define VFC_SAA9051_BY (0x80) + + +/* Bit settings for saa9051 sub address 0x08 */ + +#define VFC_SAA9051_CCFR0 (0x01) +#define VFC_SAA9051_CCFR1 (0x02) +#define VFC_SAA9051_YPN (0x04) +#define VFC_SAA9051_ALT (0x08) +#define VFC_SAA9051_CO (0x10) +#define VFC_SAA9051_VTR (0x20) +#define VFC_SAA9051_FS (0x40) +#define VFC_SAA9051_HPLL (0x80) + + +/* Bit settings for saa9051 sub address 9 */ + +#define VFC_SAA9051_SS0 (0x01) +#define VFC_SAA9051_SS1 (0x02) +#define VFC_SAA9051_AFCC (0x04) +#define VFC_SAA9051_CI (0x08) +#define VFC_SAA9051_SA9D4 (0x10) /* Don't care bit */ +#define VFC_SAA9051_OEC (0x20) +#define VFC_SAA9051_OEY (0x40) +#define VFC_SAA9051_VNL (0x80) + + +/* Bit settings for saa9051 sub address 0x0A */ + +#define VFC_SAA9051_YDL0 (0x01) +#define VFC_SAA9051_YDL1 (0x02) +#define VFC_SAA9051_YDL2 (0x04) +#define VFC_SAA9051_SS2 (0x08) +#define VFC_SAA9051_SS3 (0x10) +#define VFC_SAA9051_YC (0x20) +#define VFC_SAA9051_CT (0x40) +#define VFC_SAA9051_SYC (0x80) + + +#define VFC_SAA9051_SA(a,b) ((a)->saa9051_state_array[(b)+1]) +#define vfc_update_saa9051(a) (vfc_i2c_sendbuf((a),VFC_SAA9051_ADDR,\ + (a)->saa9051_state_array,\ + VFC_SAA9051_NR)) + + +struct vfc_dev { + volatile struct vfc_regs *regs; + struct vfc_regs *phys_regs; + unsigned int control_reg; + struct semaphore device_lock_sem; + struct timer_list poll_timer; + wait_queue_head_t poll_wait; + int instance; + int busy; + unsigned long which_io; + unsigned char saa9051_state_array[VFC_SAA9051_NR]; +}; + +extern struct vfc_dev **vfc_dev_lst; + +void captstat_reset(struct vfc_dev *); +void memptr_reset(struct vfc_dev *); + +int vfc_pcf8584_init(struct vfc_dev *); +void vfc_i2c_delay_no_busy(struct vfc_dev *, unsigned long); +void vfc_i2c_delay(struct vfc_dev *); +int vfc_i2c_sendbuf(struct vfc_dev *, unsigned char, char *, int) ; +int vfc_i2c_recvbuf(struct vfc_dev *, unsigned char, char *, int) ; +int vfc_i2c_reset_bus(struct vfc_dev *); +int vfc_init_i2c_bus(struct vfc_dev *); +void vfc_lock_device(struct vfc_dev *); +void vfc_unlock_device(struct vfc_dev *); + +#define VFC_CONTROL_DIAGMODE 0x10000000 +#define VFC_CONTROL_MEMPTR 0x20000000 +#define VFC_CONTROL_CAPTURE 0x02000000 +#define VFC_CONTROL_CAPTRESET 0x04000000 + +#define VFC_STATUS_CAPTURE 0x08000000 + +#ifdef VFC_IOCTL_DEBUG +#define VFC_IOCTL_DEBUG_PRINTK(a) printk a +#else +#define VFC_IOCTL_DEBUG_PRINTK(a) +#endif + +#ifdef VFC_I2C_DEBUG +#define VFC_I2C_DEBUG_PRINTK(a) printk a +#else +#define VFC_I2C_DEBUG_PRINTK(a) +#endif + +#endif /* _LINUX_VFC_H_ */ + + + + + |