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

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __DW9714_H__
   3 #define __DW9714_H__
   4
   5 #include "../../include/linux/atomisp_platform.h"
   6 #include <linux/types.h>
   7
   8
   9 #define DW9714_VCM_ADDR 0x0c
  10
  11 enum dw9714_tok_type {
  12         DW9714_8BIT  = 0x0001,
  13         DW9714_16BIT = 0x0002,
  14 };
  15
  16 struct dw9714_vcm_settings {
  17         u16 code;       /* bit[9:0]: Data[9:0] */
  18         u8 t_src;       /* bit[4:0]: T_SRC[4:0] */
  19         u8 step_setting;        /* bit[3:0]: S[3:0]/bit[5:4]: MCLK[1:0] */
  20         bool update;
  21 };
  22
  23 enum dw9714_vcm_mode {
  24         DW9714_DIRECT = 0x1,    /* direct control */
  25         DW9714_LSC = 0x2,       /* linear slope control */
  26         DW9714_DLC = 0x3,       /* dual level control */
  27 };
  28
  29 /* dw9714 device structure */
  30 struct dw9714_device {
  31         struct dw9714_vcm_settings vcm_settings;
  32         struct timespec timestamp_t_focus_abs;
  33         enum dw9714_vcm_mode vcm_mode;
  34         s16 number_of_steps;
  35         bool initialized;               /* true if dw9714 is detected */
  36         s32 focus;                      /* Current focus value */
  37         struct timespec focus_time;     /* Time when focus was last time set */
  38         __u8 buffer[4];                 /* Used for i2c transactions */
  39         const struct camera_af_platform_data *platform_data;
  40 };
  41
  42 #define DW9714_INVALID_CONFIG   0xffffffff
  43 #define DW9714_MAX_FOCUS_POS    1023
  44 #define DW9714_DEFAULT_FOCUS_POS        290
  45
  46
  47 /* MCLK[1:0] = 01 T_SRC[4:0] = 00001 S[3:0] = 0111 */
  48 #define DELAY_PER_STEP_NS       1000000
  49 #define DELAY_MAX_PER_STEP_NS   (1000000 * 1023)
  50
  51 #define DLC_ENABLE 1
  52 #define DLC_DISABLE 0
  53 #define VCM_PROTECTION_OFF      0xeca3
  54 #define VCM_PROTECTION_ON       0xdc51
  55 #define VCM_DEFAULT_S 0x0
  56
  57 #define vcm_step_s(a) (u8)(a & 0xf)
  58 #define vcm_step_mclk(a) (u8)((a >> 4) & 0x3)
  59 #define vcm_dlc_mclk(dlc, mclk) (u16)((dlc << 3) | mclk | 0xa104)
  60 #define vcm_tsrc(tsrc) (u16)(tsrc << 3 | 0xf200)
  61 #define vcm_val(data, s) (u16)(data << 4 | s)
  62 #define DIRECT_VCM vcm_dlc_mclk(0, 0)
  63
  64 #endif