598 lines
14 KiB
C
598 lines
14 KiB
C
/* Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/delay.h>
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#include <linux/types.h>
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#include <linux/i2c.h>
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#include <linux/uaccess.h>
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#include <linux/miscdevice.h>
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#include <linux/slab.h>
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#include <media/msm_camera.h>
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#include <mach/camera.h>
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#include "ov7692.h"
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/*=============================================================
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SENSOR REGISTER DEFINES
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==============================================================*/
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#define Q8 0x00000100
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/* Omnivision8810 product ID register address */
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#define REG_OV7692_MODEL_ID_MSB 0x0A
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#define REG_OV7692_MODEL_ID_LSB 0x0B
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#define OV7692_MODEL_ID 0x7692
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/* Omnivision8810 product ID */
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/* Time in milisecs for waiting for the sensor to reset */
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#define OV7692_RESET_DELAY_MSECS 66
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#define OV7692_DEFAULT_CLOCK_RATE 24000000
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/* Registers*/
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/* Color bar pattern selection */
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#define OV7692_COLOR_BAR_PATTERN_SEL_REG 0x82
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/* Color bar enabling control */
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#define OV7692_COLOR_BAR_ENABLE_REG 0x601
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/* Time in milisecs for waiting for the sensor to reset*/
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#define OV7692_RESET_DELAY_MSECS 66
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/*============================================================================
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DATA DECLARATIONS
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============================================================================*/
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/* 96MHz PCLK @ 24MHz MCLK */
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struct reg_addr_val_pair_struct ov7692_init_settings_array[] = {
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{0x12, 0x80},
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{0x0e, 0x08},
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{0x69, 0x52},
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{0x1e, 0xb3},
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{0x48, 0x42},
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{0xff, 0x01},
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{0xae, 0xa0},
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{0xa8, 0x26},
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{0xb4, 0xc0},
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{0xb5, 0x40},
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{0xff, 0x00},
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{0x0c, 0x00},
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{0x62, 0x10},
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{0x12, 0x00},
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{0x17, 0x65},
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{0x18, 0xa4},
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{0x19, 0x0a},
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{0x1a, 0xf6},
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{0x3e, 0x30},
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{0x64, 0x0a},
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{0xff, 0x01},
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{0xb4, 0xc0},
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{0xff, 0x00},
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{0x67, 0x20},
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{0x81, 0x3f},
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{0xcc, 0x02},
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{0xcd, 0x80},
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{0xce, 0x01},
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{0xcf, 0xe0},
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{0xc8, 0x02},
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{0xc9, 0x80},
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{0xca, 0x01},
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{0xcb, 0xe0},
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{0xd0, 0x48},
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{0x82, 0x03},
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{0x0e, 0x00},
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{0x70, 0x00},
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{0x71, 0x34},
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{0x74, 0x28},
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{0x75, 0x98},
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{0x76, 0x00},
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{0x77, 0x64},
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{0x78, 0x01},
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{0x79, 0xc2},
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{0x7a, 0x4e},
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{0x7b, 0x1f},
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{0x7c, 0x00},
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{0x11, 0x00},
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{0x20, 0x00},
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{0x21, 0x23},
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{0x50, 0x9a},
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{0x51, 0x80},
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{0x4c, 0x7d},
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{0x0e, 0x00},
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{0x80, 0x7f},
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{0x85, 0x10},
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{0x86, 0x00},
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{0x87, 0x00},
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{0x88, 0x00},
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{0x89, 0x2a},
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{0x8a, 0x26},
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{0x8b, 0x22},
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{0xbb, 0x7a},
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{0xbc, 0x69},
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{0xbd, 0x11},
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{0xbe, 0x13},
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{0xbf, 0x81},
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{0xc0, 0x96},
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{0xc1, 0x1e},
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{0xb7, 0x05},
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{0xb8, 0x09},
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{0xb9, 0x00},
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{0xba, 0x18},
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{0x5a, 0x1f},
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{0x5b, 0x9f},
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{0x5c, 0x6a},
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{0x5d, 0x42},
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{0x24, 0x78},
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{0x25, 0x68},
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{0x26, 0xb3},
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{0xa3, 0x0b},
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{0xa4, 0x15},
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{0xa5, 0x2a},
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{0xa6, 0x51},
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{0xa7, 0x63},
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{0xa8, 0x74},
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{0xa9, 0x83},
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{0xaa, 0x91},
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{0xab, 0x9e},
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{0xac, 0xaa},
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{0xad, 0xbe},
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{0xae, 0xce},
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{0xaf, 0xe5},
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{0xb0, 0xf3},
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{0xb1, 0xfb},
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{0xb2, 0x06},
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{0x8c, 0x5c},
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{0x8d, 0x11},
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{0x8e, 0x12},
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{0x8f, 0x19},
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{0x90, 0x50},
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{0x91, 0x20},
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{0x92, 0x96},
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{0x93, 0x80},
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{0x94, 0x13},
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{0x95, 0x1b},
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{0x96, 0xff},
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{0x97, 0x00},
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{0x98, 0x3d},
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{0x99, 0x36},
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{0x9a, 0x51},
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{0x9b, 0x43},
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{0x9c, 0xf0},
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{0x9d, 0xf0},
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{0x9e, 0xf0},
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{0x9f, 0xff},
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{0xa0, 0x68},
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{0xa1, 0x62},
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{0xa2, 0x0e},
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};
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static bool OV7692_CSI_CONFIG;
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/* 816x612, 24MHz MCLK 96MHz PCLK */
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uint32_t OV7692_FULL_SIZE_WIDTH = 640;
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uint32_t OV7692_FULL_SIZE_HEIGHT = 480;
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uint32_t OV7692_QTR_SIZE_WIDTH = 640;
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uint32_t OV7692_QTR_SIZE_HEIGHT = 480;
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uint32_t OV7692_HRZ_FULL_BLK_PIXELS = 16;
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uint32_t OV7692_VER_FULL_BLK_LINES = 12;
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uint32_t OV7692_HRZ_QTR_BLK_PIXELS = 16;
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uint32_t OV7692_VER_QTR_BLK_LINES = 12;
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struct ov7692_work_t {
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struct work_struct work;
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};
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static struct ov7692_work_t *ov7692_sensorw;
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static struct i2c_client *ov7692_client;
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struct ov7692_ctrl_t {
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const struct msm_camera_sensor_info *sensordata;
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uint32_t sensormode;
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uint32_t fps_divider; /* init to 1 * 0x00000400 */
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uint32_t pict_fps_divider; /* init to 1 * 0x00000400 */
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uint32_t fps;
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int32_t curr_lens_pos;
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uint32_t curr_step_pos;
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uint32_t my_reg_gain;
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uint32_t my_reg_line_count;
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uint32_t total_lines_per_frame;
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enum ov7692_resolution_t prev_res;
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enum ov7692_resolution_t pict_res;
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enum ov7692_resolution_t curr_res;
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enum ov7692_test_mode_t set_test;
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unsigned short imgaddr;
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};
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static struct ov7692_ctrl_t *ov7692_ctrl;
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static DECLARE_WAIT_QUEUE_HEAD(ov7692_wait_queue);
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DEFINE_MUTEX(ov7692_mut);
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/*=============================================================*/
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static int ov7692_i2c_rxdata(unsigned short saddr,
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unsigned char *rxdata, int length)
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{
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struct i2c_msg msgs[] = {
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{
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.addr = saddr,
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.flags = 0,
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.len = 1,
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.buf = rxdata,
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},
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{
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.addr = saddr,
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.flags = I2C_M_RD,
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.len = 1,
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.buf = rxdata,
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},
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};
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if (i2c_transfer(ov7692_client->adapter, msgs, 2) < 0) {
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CDBG("ov7692_i2c_rxdata failed!\n");
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return -EIO;
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}
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return 0;
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}
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static int32_t ov7692_i2c_txdata(unsigned short saddr,
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unsigned char *txdata, int length)
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{
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struct i2c_msg msg[] = {
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{
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.addr = saddr,
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.flags = 0,
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.len = 2,
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.buf = txdata,
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},
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};
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if (i2c_transfer(ov7692_client->adapter, msg, 1) < 0) {
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CDBG("ov7692_i2c_txdata faild 0x%x\n", ov7692_client->addr);
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return -EIO;
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}
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return 0;
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}
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static int32_t ov7692_i2c_read(uint8_t raddr,
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uint8_t *rdata, int rlen)
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{
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int32_t rc = 0;
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unsigned char buf[1];
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if (!rdata)
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return -EIO;
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memset(buf, 0, sizeof(buf));
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buf[0] = raddr;
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rc = ov7692_i2c_rxdata(ov7692_client->addr >> 1, buf, rlen);
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if (rc < 0) {
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CDBG("ov7692_i2c_read 0x%x failed!\n", raddr);
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return rc;
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}
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*rdata = buf[0];
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return rc;
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}
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static int32_t ov7692_i2c_write_b_sensor(uint8_t waddr, uint8_t bdata)
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{
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int32_t rc = -EFAULT;
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unsigned char buf[2];
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memset(buf, 0, sizeof(buf));
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buf[0] = waddr;
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buf[1] = bdata;
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CDBG("i2c_write_b addr = 0x%x, val = 0x%x\n", waddr, bdata);
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rc = ov7692_i2c_txdata(ov7692_client->addr >> 1, buf, 2);
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if (rc < 0)
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CDBG("i2c_write_b failed, addr = 0x%x, val = 0x%x!\n",
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waddr, bdata);
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return rc;
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}
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static int32_t ov7692_sensor_setting(int update_type, int rt)
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{
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int32_t i, array_length;
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int32_t rc = 0;
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struct msm_camera_csi_params ov7692_csi_params;
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switch (update_type) {
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case REG_INIT:
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OV7692_CSI_CONFIG = 0;
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ov7692_i2c_write_b_sensor(0x0e, 0x08);
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return rc;
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break;
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case UPDATE_PERIODIC:
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if (!OV7692_CSI_CONFIG) {
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ov7692_csi_params.lane_cnt = 1;
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ov7692_csi_params.data_format = CSI_8BIT;
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ov7692_csi_params.lane_assign = 0xe4;
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ov7692_csi_params.dpcm_scheme = 0;
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ov7692_csi_params.settle_cnt = 0x14;
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rc = msm_camio_csi_config(&ov7692_csi_params);
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msleep(10);
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array_length = sizeof(ov7692_init_settings_array) /
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sizeof(ov7692_init_settings_array[0]);
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for (i = 0; i < array_length; i++) {
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rc = ov7692_i2c_write_b_sensor(
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ov7692_init_settings_array[i].reg_addr,
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ov7692_init_settings_array[i].reg_val);
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if (rc < 0)
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return rc;
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}
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OV7692_CSI_CONFIG = 1;
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msleep(20);
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return rc;
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}
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break;
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default:
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rc = -EINVAL;
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break;
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}
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return rc;
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}
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static int32_t ov7692_video_config(int mode)
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{
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int32_t rc = 0;
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int rt;
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/* change sensor resolution if needed */
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rt = RES_PREVIEW;
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if (ov7692_sensor_setting(UPDATE_PERIODIC, rt) < 0)
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return rc;
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ov7692_ctrl->curr_res = ov7692_ctrl->prev_res;
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ov7692_ctrl->sensormode = mode;
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return rc;
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}
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static int32_t ov7692_set_sensor_mode(int mode,
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int res)
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{
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int32_t rc = 0;
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switch (mode) {
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case SENSOR_PREVIEW_MODE:
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rc = ov7692_video_config(mode);
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break;
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case SENSOR_SNAPSHOT_MODE:
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case SENSOR_RAW_SNAPSHOT_MODE:
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break;
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default:
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rc = -EINVAL;
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break;
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}
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return rc;
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}
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static int32_t ov7692_power_down(void)
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{
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return 0;
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}
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static int ov7692_probe_init_sensor(const struct msm_camera_sensor_info *data)
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{
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uint8_t model_id_msb, model_id_lsb = 0;
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uint16_t model_id;
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int32_t rc = 0;
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/*The reset pin is not physically connected to the sensor.
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The standby pin will do the reset hence there is no need
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to request the gpio reset*/
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/* Read sensor Model ID: */
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rc = ov7692_i2c_read(REG_OV7692_MODEL_ID_MSB, &model_id_msb, 1);
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if (rc < 0)
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goto init_probe_fail;
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rc = ov7692_i2c_read(REG_OV7692_MODEL_ID_LSB, &model_id_lsb, 1);
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if (rc < 0)
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goto init_probe_fail;
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model_id = (model_id_msb << 8) | ((model_id_lsb & 0x00FF)) ;
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CDBG("ov7692 model_id = 0x%x, 0x%x, 0x%x\n",
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model_id, model_id_msb, model_id_lsb);
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/* 4. Compare sensor ID to OV7692 ID: */
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if (model_id != OV7692_MODEL_ID) {
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rc = -ENODEV;
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goto init_probe_fail;
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}
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goto init_probe_done;
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init_probe_fail:
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pr_warning(" ov7692_probe_init_sensor fails\n");
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init_probe_done:
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CDBG(" ov7692_probe_init_sensor finishes\n");
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return rc;
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}
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int ov7692_sensor_open_init(const struct msm_camera_sensor_info *data)
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{
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int32_t rc = 0;
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CDBG("%s: %d\n", __func__, __LINE__);
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CDBG("Calling ov7692_sensor_open_init\n");
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ov7692_ctrl = kzalloc(sizeof(struct ov7692_ctrl_t), GFP_KERNEL);
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if (!ov7692_ctrl) {
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CDBG("ov7692_init failed!\n");
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rc = -ENOMEM;
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goto init_done;
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}
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ov7692_ctrl->fps_divider = 1 * 0x00000400;
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ov7692_ctrl->pict_fps_divider = 1 * 0x00000400;
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ov7692_ctrl->fps = 30 * Q8;
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ov7692_ctrl->set_test = TEST_OFF;
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ov7692_ctrl->prev_res = QTR_SIZE;
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ov7692_ctrl->pict_res = FULL_SIZE;
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ov7692_ctrl->curr_res = INVALID_SIZE;
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if (data)
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ov7692_ctrl->sensordata = data;
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/* enable mclk first */
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msm_camio_clk_rate_set(24000000);
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msleep(20);
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rc = ov7692_probe_init_sensor(data);
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if (rc < 0) {
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CDBG("Calling ov7692_sensor_open_init fail\n");
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goto init_fail;
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}
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rc = ov7692_sensor_setting(REG_INIT, RES_PREVIEW);
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if (rc < 0)
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goto init_fail;
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else
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goto init_done;
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init_fail:
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CDBG(" ov7692_sensor_open_init fail\n");
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kfree(ov7692_ctrl);
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init_done:
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CDBG("ov7692_sensor_open_init done\n");
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return rc;
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}
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static int ov7692_init_client(struct i2c_client *client)
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{
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/* Initialize the MSM_CAMI2C Chip */
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init_waitqueue_head(&ov7692_wait_queue);
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return 0;
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}
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static const struct i2c_device_id ov7692_i2c_id[] = {
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{"ov7692", 0},
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{ }
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};
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static int ov7692_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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int rc = 0;
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CDBG("ov7692_i2c_probe called!\n");
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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CDBG("i2c_check_functionality failed\n");
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goto probe_failure;
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}
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ov7692_sensorw = kzalloc(sizeof(struct ov7692_work_t), GFP_KERNEL);
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if (!ov7692_sensorw) {
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CDBG("kzalloc failed.\n");
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rc = -ENOMEM;
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goto probe_failure;
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}
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i2c_set_clientdata(client, ov7692_sensorw);
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ov7692_init_client(client);
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ov7692_client = client;
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CDBG("ov7692_i2c_probe success! rc = %d\n", rc);
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return 0;
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probe_failure:
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CDBG("ov7692_i2c_probe failed! rc = %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
static int __exit ov7692_remove(struct i2c_client *client)
|
|
{
|
|
struct ov7692_work_t_t *sensorw = i2c_get_clientdata(client);
|
|
free_irq(client->irq, sensorw);
|
|
ov7692_client = NULL;
|
|
kfree(sensorw);
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_driver ov7692_i2c_driver = {
|
|
.id_table = ov7692_i2c_id,
|
|
.probe = ov7692_i2c_probe,
|
|
.remove = __exit_p(ov7692_i2c_remove),
|
|
.driver = {
|
|
.name = "ov7692",
|
|
},
|
|
};
|
|
|
|
int ov7692_sensor_config(void __user *argp)
|
|
{
|
|
struct sensor_cfg_data cdata;
|
|
long rc = 0;
|
|
if (copy_from_user(&cdata,
|
|
(void *)argp,
|
|
sizeof(struct sensor_cfg_data)))
|
|
return -EFAULT;
|
|
mutex_lock(&ov7692_mut);
|
|
CDBG("ov7692_sensor_config: cfgtype = %d\n",
|
|
cdata.cfgtype);
|
|
switch (cdata.cfgtype) {
|
|
case CFG_SET_MODE:
|
|
rc = ov7692_set_sensor_mode(cdata.mode,
|
|
cdata.rs);
|
|
break;
|
|
case CFG_PWR_DOWN:
|
|
rc = ov7692_power_down();
|
|
break;
|
|
case CFG_SET_EFFECT:
|
|
break;
|
|
default:
|
|
rc = -EFAULT;
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&ov7692_mut);
|
|
|
|
return rc;
|
|
}
|
|
static int ov7692_sensor_release(void)
|
|
{
|
|
int rc = -EBADF;
|
|
mutex_lock(&ov7692_mut);
|
|
ov7692_power_down();
|
|
kfree(ov7692_ctrl);
|
|
ov7692_ctrl = NULL;
|
|
CDBG("ov7692_release completed\n");
|
|
mutex_unlock(&ov7692_mut);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ov7692_sensor_probe(const struct msm_camera_sensor_info *info,
|
|
struct msm_sensor_ctrl *s)
|
|
{
|
|
int rc = 0;
|
|
rc = i2c_add_driver(&ov7692_i2c_driver);
|
|
if (rc < 0 || ov7692_client == NULL) {
|
|
rc = -ENOTSUPP;
|
|
goto probe_fail;
|
|
}
|
|
msm_camio_clk_rate_set(24000000);
|
|
rc = ov7692_probe_init_sensor(info);
|
|
if (rc < 0)
|
|
goto probe_fail;
|
|
s->s_init = ov7692_sensor_open_init;
|
|
s->s_release = ov7692_sensor_release;
|
|
s->s_config = ov7692_sensor_config;
|
|
s->s_camera_type = FRONT_CAMERA_2D;
|
|
s->s_mount_angle = 0;
|
|
return rc;
|
|
|
|
probe_fail:
|
|
CDBG("ov7692_sensor_probe: SENSOR PROBE FAILS!\n");
|
|
i2c_del_driver(&ov7692_i2c_driver);
|
|
return rc;
|
|
}
|
|
|
|
static int __ov7692_probe(struct platform_device *pdev)
|
|
{
|
|
|
|
return msm_camera_drv_start(pdev, ov7692_sensor_probe);
|
|
}
|
|
|
|
static struct platform_driver msm_camera_driver = {
|
|
.probe = __ov7692_probe,
|
|
.driver = {
|
|
.name = "msm_camera_ov7692",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static int __init ov7692_init(void)
|
|
{
|
|
return platform_driver_register(&msm_camera_driver);
|
|
}
|
|
|
|
module_init(ov7692_init);
|
|
|
|
MODULE_DESCRIPTION("OMNI VGA YUV sensor driver");
|
|
MODULE_LICENSE("GPL v2");
|