drivers/staging/media/atomisp/i2c/imx/dw9714.h

   1 #ifndef __DW9714_H__
   2 #define __DW9714_H__
   3
   4 #include <linux/atomisp_platform.h>
   5 #include <linux/types.h>
   6
   7
   8 #define DW9714_VCM_ADDR 0x0c
   9
  10 enum dw9714_tok_type {
  11         DW9714_8BIT  = 0x0001,
  12         DW9714_16BIT = 0x0002,
  13 };
  14
  15 struct dw9714_vcm_settings {
  16         u16 code;       /* bit[9:0]: Data[9:0] */
  17         u8 t_src;       /* bit[4:0]: T_SRC[4:0] */
  18         u8 step_setting;        /* bit[3:0]: S[3:0]/bit[5:4]: MCLK[1:0] */
  19         bool update;
  20 };
  21
  22 enum dw9714_vcm_mode {
  23         DW9714_DIRECT = 0x1,    /* direct control */
  24         DW9714_LSC = 0x2,       /* linear slope control */
  25         DW9714_DLC = 0x3,       /* dual level control */
  26 };
  27
  28 /* dw9714 device structure */
  29 struct dw9714_device {
  30         struct dw9714_vcm_settings vcm_settings;
  31         struct timespec timestamp_t_focus_abs;
  32         enum dw9714_vcm_mode vcm_mode;
  33         s16 number_of_steps;
  34         bool initialized;               /* true if dw9714 is detected */
  35         s32 focus;                      /* Current focus value */
  36         struct timespec focus_time;     /* Time when focus was last time set */
  37         __u8 buffer[4];                 /* Used for i2c transactions */
  38         const struct camera_af_platform_data *platform_data;
  39 };
  40
  41 #define DW9714_INVALID_CONFIG   0xffffffff
  42 #define DW9714_MAX_FOCUS_POS    1023
  43 #define DW9714_DEFAULT_FOCUS_POS        290
  44
  45
  46 /* MCLK[1:0] = 01 T_SRC[4:0] = 00001 S[3:0] = 0111 */
  47 #define DELAY_PER_STEP_NS       1000000
  48 #define DELAY_MAX_PER_STEP_NS   (1000000 * 1023)
  49
  50 #define DLC_ENABLE 1
  51 #define DLC_DISABLE 0
  52 #define VCM_PROTECTION_OFF      0xeca3
  53 #define VCM_PROTECTION_ON       0xdc51
  54 #define VCM_DEFAULT_S 0x0
  55
  56 #define vcm_step_s(a) (u8)(a & 0xf)
  57 #define vcm_step_mclk(a) (u8)((a >> 4) & 0x3)
  58 #define vcm_dlc_mclk(dlc, mclk) (u16)((dlc << 3) | mclk | 0xa104)
  59 #define vcm_tsrc(tsrc) (u16)(tsrc << 3 | 0xf200)
  60 #define vcm_val(data, s) (u16)(data << 4 | s)
  61 #define DIRECT_VCM vcm_dlc_mclk(0, 0)
  62
  63 #endif