64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
#ifndef __DW9714_H__
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#define __DW9714_H__
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#include <linux/atomisp_platform.h>
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#include <linux/types.h>
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#define DW9714_VCM_ADDR 0x0c
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enum dw9714_tok_type {
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DW9714_8BIT = 0x0001,
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DW9714_16BIT = 0x0002,
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};
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struct dw9714_vcm_settings {
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u16 code; /* bit[9:0]: Data[9:0] */
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u8 t_src; /* bit[4:0]: T_SRC[4:0] */
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u8 step_setting; /* bit[3:0]: S[3:0]/bit[5:4]: MCLK[1:0] */
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bool update;
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};
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enum dw9714_vcm_mode {
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DW9714_DIRECT = 0x1, /* direct control */
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DW9714_LSC = 0x2, /* linear slope control */
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DW9714_DLC = 0x3, /* dual level control */
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};
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/* dw9714 device structure */
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struct dw9714_device {
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struct dw9714_vcm_settings vcm_settings;
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struct timespec timestamp_t_focus_abs;
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enum dw9714_vcm_mode vcm_mode;
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s16 number_of_steps;
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bool initialized; /* true if dw9714 is detected */
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s32 focus; /* Current focus value */
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struct timespec focus_time; /* Time when focus was last time set */
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__u8 buffer[4]; /* Used for i2c transactions */
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const struct camera_af_platform_data *platform_data;
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};
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#define DW9714_INVALID_CONFIG 0xffffffff
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#define DW9714_MAX_FOCUS_POS 1023
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#define DW9714_DEFAULT_FOCUS_POS 290
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/* MCLK[1:0] = 01 T_SRC[4:0] = 00001 S[3:0] = 0111 */
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#define DELAY_PER_STEP_NS 1000000
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#define DELAY_MAX_PER_STEP_NS (1000000 * 1023)
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#define DLC_ENABLE 1
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#define DLC_DISABLE 0
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#define VCM_PROTECTION_OFF 0xeca3
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#define VCM_PROTECTION_ON 0xdc51
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#define VCM_DEFAULT_S 0x0
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#define vcm_step_s(a) (u8)(a & 0xf)
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#define vcm_step_mclk(a) (u8)((a >> 4) & 0x3)
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#define vcm_dlc_mclk(dlc, mclk) (u16)((dlc << 3) | mclk | 0xa104)
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#define vcm_tsrc(tsrc) (u16)(tsrc << 3 | 0xf200)
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#define vcm_val(data, s) (u16)(data << 4 | s)
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#define DIRECT_VCM vcm_dlc_mclk(0, 0)
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#endif
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