877 lines
24 KiB
C
877 lines
24 KiB
C
/*
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* Driver for MT9V032 CMOS Image Sensor from Micron
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*
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* Copyright (C) 2010, Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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*
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* Based on the MT9M001 driver,
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*
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* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
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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 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/log2.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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#include <linux/v4l2-mediabus.h>
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#include <linux/module.h>
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#include <media/mt9v032.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-subdev.h>
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#define MT9V032_PIXEL_ARRAY_HEIGHT 492
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#define MT9V032_PIXEL_ARRAY_WIDTH 782
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#define MT9V032_SYSCLK_FREQ_DEF 26600000
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#define MT9V032_CHIP_VERSION 0x00
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#define MT9V032_CHIP_ID_REV1 0x1311
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#define MT9V032_CHIP_ID_REV3 0x1313
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#define MT9V032_COLUMN_START 0x01
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#define MT9V032_COLUMN_START_MIN 1
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#define MT9V032_COLUMN_START_DEF 1
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#define MT9V032_COLUMN_START_MAX 752
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#define MT9V032_ROW_START 0x02
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#define MT9V032_ROW_START_MIN 4
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#define MT9V032_ROW_START_DEF 5
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#define MT9V032_ROW_START_MAX 482
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#define MT9V032_WINDOW_HEIGHT 0x03
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#define MT9V032_WINDOW_HEIGHT_MIN 1
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#define MT9V032_WINDOW_HEIGHT_DEF 480
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#define MT9V032_WINDOW_HEIGHT_MAX 480
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#define MT9V032_WINDOW_WIDTH 0x04
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#define MT9V032_WINDOW_WIDTH_MIN 1
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#define MT9V032_WINDOW_WIDTH_DEF 752
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#define MT9V032_WINDOW_WIDTH_MAX 752
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#define MT9V032_HORIZONTAL_BLANKING 0x05
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#define MT9V032_HORIZONTAL_BLANKING_MIN 43
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#define MT9V032_HORIZONTAL_BLANKING_DEF 94
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#define MT9V032_HORIZONTAL_BLANKING_MAX 1023
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#define MT9V032_VERTICAL_BLANKING 0x06
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#define MT9V032_VERTICAL_BLANKING_MIN 4
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#define MT9V032_VERTICAL_BLANKING_DEF 45
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#define MT9V032_VERTICAL_BLANKING_MAX 3000
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#define MT9V032_CHIP_CONTROL 0x07
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#define MT9V032_CHIP_CONTROL_MASTER_MODE (1 << 3)
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#define MT9V032_CHIP_CONTROL_DOUT_ENABLE (1 << 7)
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#define MT9V032_CHIP_CONTROL_SEQUENTIAL (1 << 8)
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#define MT9V032_SHUTTER_WIDTH1 0x08
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#define MT9V032_SHUTTER_WIDTH2 0x09
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#define MT9V032_SHUTTER_WIDTH_CONTROL 0x0a
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#define MT9V032_TOTAL_SHUTTER_WIDTH 0x0b
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#define MT9V032_TOTAL_SHUTTER_WIDTH_MIN 1
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#define MT9V032_TOTAL_SHUTTER_WIDTH_DEF 480
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#define MT9V032_TOTAL_SHUTTER_WIDTH_MAX 32767
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#define MT9V032_RESET 0x0c
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#define MT9V032_READ_MODE 0x0d
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#define MT9V032_READ_MODE_ROW_BIN_MASK (3 << 0)
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#define MT9V032_READ_MODE_ROW_BIN_SHIFT 0
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#define MT9V032_READ_MODE_COLUMN_BIN_MASK (3 << 2)
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#define MT9V032_READ_MODE_COLUMN_BIN_SHIFT 2
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#define MT9V032_READ_MODE_ROW_FLIP (1 << 4)
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#define MT9V032_READ_MODE_COLUMN_FLIP (1 << 5)
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#define MT9V032_READ_MODE_DARK_COLUMNS (1 << 6)
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#define MT9V032_READ_MODE_DARK_ROWS (1 << 7)
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#define MT9V032_PIXEL_OPERATION_MODE 0x0f
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#define MT9V032_PIXEL_OPERATION_MODE_COLOR (1 << 2)
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#define MT9V032_PIXEL_OPERATION_MODE_HDR (1 << 6)
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#define MT9V032_ANALOG_GAIN 0x35
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#define MT9V032_ANALOG_GAIN_MIN 16
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#define MT9V032_ANALOG_GAIN_DEF 16
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#define MT9V032_ANALOG_GAIN_MAX 64
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#define MT9V032_MAX_ANALOG_GAIN 0x36
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#define MT9V032_MAX_ANALOG_GAIN_MAX 127
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#define MT9V032_FRAME_DARK_AVERAGE 0x42
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#define MT9V032_DARK_AVG_THRESH 0x46
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#define MT9V032_DARK_AVG_LOW_THRESH_MASK (255 << 0)
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#define MT9V032_DARK_AVG_LOW_THRESH_SHIFT 0
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#define MT9V032_DARK_AVG_HIGH_THRESH_MASK (255 << 8)
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#define MT9V032_DARK_AVG_HIGH_THRESH_SHIFT 8
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#define MT9V032_ROW_NOISE_CORR_CONTROL 0x70
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#define MT9V032_ROW_NOISE_CORR_ENABLE (1 << 5)
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#define MT9V032_ROW_NOISE_CORR_USE_BLK_AVG (1 << 7)
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#define MT9V032_PIXEL_CLOCK 0x74
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#define MT9V032_PIXEL_CLOCK_INV_LINE (1 << 0)
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#define MT9V032_PIXEL_CLOCK_INV_FRAME (1 << 1)
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#define MT9V032_PIXEL_CLOCK_XOR_LINE (1 << 2)
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#define MT9V032_PIXEL_CLOCK_CONT_LINE (1 << 3)
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#define MT9V032_PIXEL_CLOCK_INV_PXL_CLK (1 << 4)
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#define MT9V032_TEST_PATTERN 0x7f
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#define MT9V032_TEST_PATTERN_DATA_MASK (1023 << 0)
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#define MT9V032_TEST_PATTERN_DATA_SHIFT 0
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#define MT9V032_TEST_PATTERN_USE_DATA (1 << 10)
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#define MT9V032_TEST_PATTERN_GRAY_MASK (3 << 11)
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#define MT9V032_TEST_PATTERN_GRAY_NONE (0 << 11)
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#define MT9V032_TEST_PATTERN_GRAY_VERTICAL (1 << 11)
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#define MT9V032_TEST_PATTERN_GRAY_HORIZONTAL (2 << 11)
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#define MT9V032_TEST_PATTERN_GRAY_DIAGONAL (3 << 11)
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#define MT9V032_TEST_PATTERN_ENABLE (1 << 13)
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#define MT9V032_TEST_PATTERN_FLIP (1 << 14)
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#define MT9V032_AEC_AGC_ENABLE 0xaf
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#define MT9V032_AEC_ENABLE (1 << 0)
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#define MT9V032_AGC_ENABLE (1 << 1)
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#define MT9V032_THERMAL_INFO 0xc1
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struct mt9v032 {
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struct v4l2_subdev subdev;
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struct media_pad pad;
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struct v4l2_mbus_framefmt format;
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struct v4l2_rect crop;
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struct v4l2_ctrl_handler ctrls;
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struct {
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struct v4l2_ctrl *link_freq;
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struct v4l2_ctrl *pixel_rate;
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};
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struct mutex power_lock;
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int power_count;
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struct clk *clk;
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struct mt9v032_platform_data *pdata;
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u32 sysclk;
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u16 chip_control;
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u16 aec_agc;
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u16 hblank;
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struct {
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struct v4l2_ctrl *test_pattern;
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struct v4l2_ctrl *test_pattern_color;
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};
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};
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static struct mt9v032 *to_mt9v032(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct mt9v032, subdev);
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}
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static int mt9v032_read(struct i2c_client *client, const u8 reg)
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{
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s32 data = i2c_smbus_read_word_swapped(client, reg);
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dev_dbg(&client->dev, "%s: read 0x%04x from 0x%02x\n", __func__,
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data, reg);
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return data;
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}
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static int mt9v032_write(struct i2c_client *client, const u8 reg,
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const u16 data)
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{
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dev_dbg(&client->dev, "%s: writing 0x%04x to 0x%02x\n", __func__,
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data, reg);
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return i2c_smbus_write_word_swapped(client, reg, data);
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}
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static int mt9v032_set_chip_control(struct mt9v032 *mt9v032, u16 clear, u16 set)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
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u16 value = (mt9v032->chip_control & ~clear) | set;
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int ret;
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ret = mt9v032_write(client, MT9V032_CHIP_CONTROL, value);
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if (ret < 0)
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return ret;
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mt9v032->chip_control = value;
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return 0;
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}
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static int
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mt9v032_update_aec_agc(struct mt9v032 *mt9v032, u16 which, int enable)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
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u16 value = mt9v032->aec_agc;
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int ret;
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if (enable)
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value |= which;
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else
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value &= ~which;
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ret = mt9v032_write(client, MT9V032_AEC_AGC_ENABLE, value);
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if (ret < 0)
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return ret;
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mt9v032->aec_agc = value;
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return 0;
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}
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static int
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mt9v032_update_hblank(struct mt9v032 *mt9v032)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
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struct v4l2_rect *crop = &mt9v032->crop;
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return mt9v032_write(client, MT9V032_HORIZONTAL_BLANKING,
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max_t(s32, mt9v032->hblank, 660 - crop->width));
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}
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#define EXT_CLK 25000000
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static int mt9v032_power_on(struct mt9v032 *mt9v032)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
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int ret;
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clk_set_rate(mt9v032->clk, mt9v032->sysclk);
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clk_prepare_enable(mt9v032->clk);
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udelay(1);
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/* Reset the chip and stop data read out */
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ret = mt9v032_write(client, MT9V032_RESET, 1);
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if (ret < 0)
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return ret;
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ret = mt9v032_write(client, MT9V032_RESET, 0);
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if (ret < 0)
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return ret;
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return mt9v032_write(client, MT9V032_CHIP_CONTROL, 0);
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}
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static void mt9v032_power_off(struct mt9v032 *mt9v032)
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{
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clk_disable_unprepare(mt9v032->clk);
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}
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static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
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int ret;
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if (!on) {
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mt9v032_power_off(mt9v032);
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return 0;
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}
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ret = mt9v032_power_on(mt9v032);
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if (ret < 0)
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return ret;
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/* Configure the pixel clock polarity */
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if (mt9v032->pdata && mt9v032->pdata->clk_pol) {
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ret = mt9v032_write(client, MT9V032_PIXEL_CLOCK,
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MT9V032_PIXEL_CLOCK_INV_PXL_CLK);
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if (ret < 0)
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return ret;
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}
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/* Disable the noise correction algorithm and restore the controls. */
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ret = mt9v032_write(client, MT9V032_ROW_NOISE_CORR_CONTROL, 0);
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if (ret < 0)
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return ret;
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return v4l2_ctrl_handler_setup(&mt9v032->ctrls);
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}
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/* -----------------------------------------------------------------------------
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* V4L2 subdev video operations
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*/
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static struct v4l2_mbus_framefmt *
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__mt9v032_get_pad_format(struct mt9v032 *mt9v032, struct v4l2_subdev_fh *fh,
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unsigned int pad, enum v4l2_subdev_format_whence which)
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{
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switch (which) {
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case V4L2_SUBDEV_FORMAT_TRY:
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return v4l2_subdev_get_try_format(fh, pad);
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case V4L2_SUBDEV_FORMAT_ACTIVE:
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return &mt9v032->format;
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default:
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return NULL;
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}
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}
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static struct v4l2_rect *
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__mt9v032_get_pad_crop(struct mt9v032 *mt9v032, struct v4l2_subdev_fh *fh,
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unsigned int pad, enum v4l2_subdev_format_whence which)
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{
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switch (which) {
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case V4L2_SUBDEV_FORMAT_TRY:
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return v4l2_subdev_get_try_crop(fh, pad);
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case V4L2_SUBDEV_FORMAT_ACTIVE:
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return &mt9v032->crop;
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default:
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return NULL;
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}
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}
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static int mt9v032_s_stream(struct v4l2_subdev *subdev, int enable)
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{
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const u16 mode = MT9V032_CHIP_CONTROL_MASTER_MODE
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| MT9V032_CHIP_CONTROL_DOUT_ENABLE
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| MT9V032_CHIP_CONTROL_SEQUENTIAL;
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struct i2c_client *client = v4l2_get_subdevdata(subdev);
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struct mt9v032 *mt9v032 = to_mt9v032(subdev);
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struct v4l2_mbus_framefmt *format = &mt9v032->format;
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struct v4l2_rect *crop = &mt9v032->crop;
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unsigned int hratio;
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unsigned int vratio;
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int ret;
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if (!enable)
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return mt9v032_set_chip_control(mt9v032, mode, 0);
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/* Configure the window size and row/column bin */
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hratio = DIV_ROUND_CLOSEST(crop->width, format->width);
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vratio = DIV_ROUND_CLOSEST(crop->height, format->height);
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ret = mt9v032_write(client, MT9V032_READ_MODE,
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(hratio - 1) << MT9V032_READ_MODE_ROW_BIN_SHIFT |
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(vratio - 1) << MT9V032_READ_MODE_COLUMN_BIN_SHIFT);
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if (ret < 0)
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return ret;
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ret = mt9v032_write(client, MT9V032_COLUMN_START, crop->left);
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if (ret < 0)
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return ret;
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ret = mt9v032_write(client, MT9V032_ROW_START, crop->top);
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if (ret < 0)
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return ret;
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ret = mt9v032_write(client, MT9V032_WINDOW_WIDTH, crop->width);
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if (ret < 0)
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return ret;
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ret = mt9v032_write(client, MT9V032_WINDOW_HEIGHT, crop->height);
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if (ret < 0)
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return ret;
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ret = mt9v032_update_hblank(mt9v032);
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if (ret < 0)
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return ret;
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/* Switch to master "normal" mode */
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return mt9v032_set_chip_control(mt9v032, 0, mode);
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}
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static int mt9v032_enum_mbus_code(struct v4l2_subdev *subdev,
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struct v4l2_subdev_fh *fh,
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struct v4l2_subdev_mbus_code_enum *code)
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{
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if (code->index > 0)
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return -EINVAL;
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code->code = V4L2_MBUS_FMT_SGRBG10_1X10;
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return 0;
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}
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static int mt9v032_enum_frame_size(struct v4l2_subdev *subdev,
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struct v4l2_subdev_fh *fh,
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struct v4l2_subdev_frame_size_enum *fse)
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{
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if (fse->index >= 8 || fse->code != V4L2_MBUS_FMT_SGRBG10_1X10)
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return -EINVAL;
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fse->min_width = MT9V032_WINDOW_WIDTH_DEF / fse->index;
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fse->max_width = fse->min_width;
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fse->min_height = MT9V032_WINDOW_HEIGHT_DEF / fse->index;
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fse->max_height = fse->min_height;
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return 0;
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}
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static int mt9v032_get_format(struct v4l2_subdev *subdev,
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struct v4l2_subdev_fh *fh,
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struct v4l2_subdev_format *format)
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{
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struct mt9v032 *mt9v032 = to_mt9v032(subdev);
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format->format = *__mt9v032_get_pad_format(mt9v032, fh, format->pad,
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format->which);
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return 0;
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}
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static void mt9v032_configure_pixel_rate(struct mt9v032 *mt9v032,
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unsigned int hratio)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
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int ret;
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ret = v4l2_ctrl_s_ctrl_int64(mt9v032->pixel_rate,
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mt9v032->sysclk / hratio);
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if (ret < 0)
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dev_warn(&client->dev, "failed to set pixel rate (%d)\n", ret);
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}
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static int mt9v032_set_format(struct v4l2_subdev *subdev,
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struct v4l2_subdev_fh *fh,
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struct v4l2_subdev_format *format)
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{
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struct mt9v032 *mt9v032 = to_mt9v032(subdev);
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struct v4l2_mbus_framefmt *__format;
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struct v4l2_rect *__crop;
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unsigned int width;
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unsigned int height;
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unsigned int hratio;
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unsigned int vratio;
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__crop = __mt9v032_get_pad_crop(mt9v032, fh, format->pad,
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format->which);
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/* Clamp the width and height to avoid dividing by zero. */
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width = clamp_t(unsigned int, ALIGN(format->format.width, 2),
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max(__crop->width / 8, MT9V032_WINDOW_WIDTH_MIN),
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__crop->width);
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height = clamp_t(unsigned int, ALIGN(format->format.height, 2),
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max(__crop->height / 8, MT9V032_WINDOW_HEIGHT_MIN),
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__crop->height);
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hratio = DIV_ROUND_CLOSEST(__crop->width, width);
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vratio = DIV_ROUND_CLOSEST(__crop->height, height);
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__format = __mt9v032_get_pad_format(mt9v032, fh, format->pad,
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format->which);
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__format->width = __crop->width / hratio;
|
|
__format->height = __crop->height / vratio;
|
|
if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
|
mt9v032_configure_pixel_rate(mt9v032, hratio);
|
|
|
|
format->format = *__format;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v032_get_crop(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_fh *fh,
|
|
struct v4l2_subdev_crop *crop)
|
|
{
|
|
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
|
|
|
|
crop->rect = *__mt9v032_get_pad_crop(mt9v032, fh, crop->pad,
|
|
crop->which);
|
|
return 0;
|
|
}
|
|
|
|
static int mt9v032_set_crop(struct v4l2_subdev *subdev,
|
|
struct v4l2_subdev_fh *fh,
|
|
struct v4l2_subdev_crop *crop)
|
|
{
|
|
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
|
|
struct v4l2_mbus_framefmt *__format;
|
|
struct v4l2_rect *__crop;
|
|
struct v4l2_rect rect;
|
|
|
|
/* Clamp the crop rectangle boundaries and align them to a non multiple
|
|
* of 2 pixels to ensure a GRBG Bayer pattern.
|
|
*/
|
|
rect.left = clamp(ALIGN(crop->rect.left + 1, 2) - 1,
|
|
MT9V032_COLUMN_START_MIN,
|
|
MT9V032_COLUMN_START_MAX);
|
|
rect.top = clamp(ALIGN(crop->rect.top + 1, 2) - 1,
|
|
MT9V032_ROW_START_MIN,
|
|
MT9V032_ROW_START_MAX);
|
|
rect.width = clamp(ALIGN(crop->rect.width, 2),
|
|
MT9V032_WINDOW_WIDTH_MIN,
|
|
MT9V032_WINDOW_WIDTH_MAX);
|
|
rect.height = clamp(ALIGN(crop->rect.height, 2),
|
|
MT9V032_WINDOW_HEIGHT_MIN,
|
|
MT9V032_WINDOW_HEIGHT_MAX);
|
|
|
|
rect.width = min(rect.width, MT9V032_PIXEL_ARRAY_WIDTH - rect.left);
|
|
rect.height = min(rect.height, MT9V032_PIXEL_ARRAY_HEIGHT - rect.top);
|
|
|
|
__crop = __mt9v032_get_pad_crop(mt9v032, fh, crop->pad, crop->which);
|
|
|
|
if (rect.width != __crop->width || rect.height != __crop->height) {
|
|
/* Reset the output image size if the crop rectangle size has
|
|
* been modified.
|
|
*/
|
|
__format = __mt9v032_get_pad_format(mt9v032, fh, crop->pad,
|
|
crop->which);
|
|
__format->width = rect.width;
|
|
__format->height = rect.height;
|
|
if (crop->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
|
mt9v032_configure_pixel_rate(mt9v032, 1);
|
|
}
|
|
|
|
*__crop = rect;
|
|
crop->rect = rect;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 subdev control operations
|
|
*/
|
|
|
|
#define V4L2_CID_TEST_PATTERN_COLOR (V4L2_CID_USER_BASE | 0x1001)
|
|
|
|
static int mt9v032_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct mt9v032 *mt9v032 =
|
|
container_of(ctrl->handler, struct mt9v032, ctrls);
|
|
struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
|
|
u32 freq;
|
|
u16 data;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUTOGAIN:
|
|
return mt9v032_update_aec_agc(mt9v032, MT9V032_AGC_ENABLE,
|
|
ctrl->val);
|
|
|
|
case V4L2_CID_GAIN:
|
|
return mt9v032_write(client, MT9V032_ANALOG_GAIN, ctrl->val);
|
|
|
|
case V4L2_CID_EXPOSURE_AUTO:
|
|
return mt9v032_update_aec_agc(mt9v032, MT9V032_AEC_ENABLE,
|
|
!ctrl->val);
|
|
|
|
case V4L2_CID_EXPOSURE:
|
|
return mt9v032_write(client, MT9V032_TOTAL_SHUTTER_WIDTH,
|
|
ctrl->val);
|
|
|
|
case V4L2_CID_HBLANK:
|
|
mt9v032->hblank = ctrl->val;
|
|
return mt9v032_update_hblank(mt9v032);
|
|
|
|
case V4L2_CID_VBLANK:
|
|
return mt9v032_write(client, MT9V032_VERTICAL_BLANKING,
|
|
ctrl->val);
|
|
|
|
case V4L2_CID_PIXEL_RATE:
|
|
case V4L2_CID_LINK_FREQ:
|
|
if (mt9v032->link_freq == NULL)
|
|
break;
|
|
|
|
freq = mt9v032->pdata->link_freqs[mt9v032->link_freq->val];
|
|
mt9v032->pixel_rate->val64 = freq;
|
|
mt9v032->sysclk = freq;
|
|
break;
|
|
|
|
case V4L2_CID_TEST_PATTERN:
|
|
switch (mt9v032->test_pattern->val) {
|
|
case 0:
|
|
data = 0;
|
|
break;
|
|
case 1:
|
|
data = MT9V032_TEST_PATTERN_GRAY_VERTICAL
|
|
| MT9V032_TEST_PATTERN_ENABLE;
|
|
break;
|
|
case 2:
|
|
data = MT9V032_TEST_PATTERN_GRAY_HORIZONTAL
|
|
| MT9V032_TEST_PATTERN_ENABLE;
|
|
break;
|
|
case 3:
|
|
data = MT9V032_TEST_PATTERN_GRAY_DIAGONAL
|
|
| MT9V032_TEST_PATTERN_ENABLE;
|
|
break;
|
|
default:
|
|
data = (mt9v032->test_pattern_color->val <<
|
|
MT9V032_TEST_PATTERN_DATA_SHIFT)
|
|
| MT9V032_TEST_PATTERN_USE_DATA
|
|
| MT9V032_TEST_PATTERN_ENABLE
|
|
| MT9V032_TEST_PATTERN_FLIP;
|
|
break;
|
|
}
|
|
return mt9v032_write(client, MT9V032_TEST_PATTERN, data);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct v4l2_ctrl_ops mt9v032_ctrl_ops = {
|
|
.s_ctrl = mt9v032_s_ctrl,
|
|
};
|
|
|
|
static const char * const mt9v032_test_pattern_menu[] = {
|
|
"Disabled",
|
|
"Gray Vertical Shade",
|
|
"Gray Horizontal Shade",
|
|
"Gray Diagonal Shade",
|
|
"Plain",
|
|
};
|
|
|
|
static const struct v4l2_ctrl_config mt9v032_test_pattern_color = {
|
|
.ops = &mt9v032_ctrl_ops,
|
|
.id = V4L2_CID_TEST_PATTERN_COLOR,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Test Pattern Color",
|
|
.min = 0,
|
|
.max = 1023,
|
|
.step = 1,
|
|
.def = 0,
|
|
.flags = 0,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 subdev core operations
|
|
*/
|
|
|
|
static int mt9v032_set_power(struct v4l2_subdev *subdev, int on)
|
|
{
|
|
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
|
|
int ret = 0;
|
|
|
|
mutex_lock(&mt9v032->power_lock);
|
|
|
|
/* If the power count is modified from 0 to != 0 or from != 0 to 0,
|
|
* update the power state.
|
|
*/
|
|
if (mt9v032->power_count == !on) {
|
|
ret = __mt9v032_set_power(mt9v032, !!on);
|
|
if (ret < 0)
|
|
goto done;
|
|
}
|
|
|
|
/* Update the power count. */
|
|
mt9v032->power_count += on ? 1 : -1;
|
|
WARN_ON(mt9v032->power_count < 0);
|
|
|
|
done:
|
|
mutex_unlock(&mt9v032->power_lock);
|
|
return ret;
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 subdev internal operations
|
|
*/
|
|
|
|
static int mt9v032_registered(struct v4l2_subdev *subdev)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(subdev);
|
|
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
|
|
s32 data;
|
|
int ret;
|
|
|
|
dev_info(&client->dev, "Probing MT9V032 at address 0x%02x\n",
|
|
client->addr);
|
|
|
|
ret = mt9v032_power_on(mt9v032);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "MT9V032 power up failed\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Read and check the sensor version */
|
|
data = mt9v032_read(client, MT9V032_CHIP_VERSION);
|
|
if (data != MT9V032_CHIP_ID_REV1 && data != MT9V032_CHIP_ID_REV3) {
|
|
dev_err(&client->dev, "MT9V032 not detected, wrong version "
|
|
"0x%04x\n", data);
|
|
return -ENODEV;
|
|
}
|
|
|
|
mt9v032_power_off(mt9v032);
|
|
|
|
dev_info(&client->dev, "MT9V032 detected at address 0x%02x\n",
|
|
client->addr);
|
|
|
|
mt9v032_configure_pixel_rate(mt9v032, 1);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mt9v032_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
|
|
{
|
|
struct v4l2_mbus_framefmt *format;
|
|
struct v4l2_rect *crop;
|
|
|
|
crop = v4l2_subdev_get_try_crop(fh, 0);
|
|
crop->left = MT9V032_COLUMN_START_DEF;
|
|
crop->top = MT9V032_ROW_START_DEF;
|
|
crop->width = MT9V032_WINDOW_WIDTH_DEF;
|
|
crop->height = MT9V032_WINDOW_HEIGHT_DEF;
|
|
|
|
format = v4l2_subdev_get_try_format(fh, 0);
|
|
format->code = V4L2_MBUS_FMT_SGRBG10_1X10;
|
|
format->width = MT9V032_WINDOW_WIDTH_DEF;
|
|
format->height = MT9V032_WINDOW_HEIGHT_DEF;
|
|
format->field = V4L2_FIELD_NONE;
|
|
format->colorspace = V4L2_COLORSPACE_SRGB;
|
|
|
|
return mt9v032_set_power(subdev, 1);
|
|
}
|
|
|
|
static int mt9v032_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
|
|
{
|
|
return mt9v032_set_power(subdev, 0);
|
|
}
|
|
|
|
static struct v4l2_subdev_core_ops mt9v032_subdev_core_ops = {
|
|
.s_power = mt9v032_set_power,
|
|
};
|
|
|
|
static struct v4l2_subdev_video_ops mt9v032_subdev_video_ops = {
|
|
.s_stream = mt9v032_s_stream,
|
|
};
|
|
|
|
static struct v4l2_subdev_pad_ops mt9v032_subdev_pad_ops = {
|
|
.enum_mbus_code = mt9v032_enum_mbus_code,
|
|
.enum_frame_size = mt9v032_enum_frame_size,
|
|
.get_fmt = mt9v032_get_format,
|
|
.set_fmt = mt9v032_set_format,
|
|
.get_crop = mt9v032_get_crop,
|
|
.set_crop = mt9v032_set_crop,
|
|
};
|
|
|
|
static struct v4l2_subdev_ops mt9v032_subdev_ops = {
|
|
.core = &mt9v032_subdev_core_ops,
|
|
.video = &mt9v032_subdev_video_ops,
|
|
.pad = &mt9v032_subdev_pad_ops,
|
|
};
|
|
|
|
static const struct v4l2_subdev_internal_ops mt9v032_subdev_internal_ops = {
|
|
.registered = mt9v032_registered,
|
|
.open = mt9v032_open,
|
|
.close = mt9v032_close,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Driver initialization and probing
|
|
*/
|
|
|
|
static int mt9v032_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *did)
|
|
{
|
|
struct mt9v032_platform_data *pdata = client->dev.platform_data;
|
|
struct mt9v032 *mt9v032;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
if (!i2c_check_functionality(client->adapter,
|
|
I2C_FUNC_SMBUS_WORD_DATA)) {
|
|
dev_warn(&client->adapter->dev,
|
|
"I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
|
|
return -EIO;
|
|
}
|
|
|
|
mt9v032 = devm_kzalloc(&client->dev, sizeof(*mt9v032), GFP_KERNEL);
|
|
if (!mt9v032)
|
|
return -ENOMEM;
|
|
|
|
mt9v032->clk = devm_clk_get(&client->dev, NULL);
|
|
if (IS_ERR(mt9v032->clk))
|
|
return PTR_ERR(mt9v032->clk);
|
|
|
|
mutex_init(&mt9v032->power_lock);
|
|
mt9v032->pdata = pdata;
|
|
|
|
v4l2_ctrl_handler_init(&mt9v032->ctrls, 10);
|
|
|
|
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
|
|
V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
|
|
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
|
|
V4L2_CID_GAIN, MT9V032_ANALOG_GAIN_MIN,
|
|
MT9V032_ANALOG_GAIN_MAX, 1, MT9V032_ANALOG_GAIN_DEF);
|
|
v4l2_ctrl_new_std_menu(&mt9v032->ctrls, &mt9v032_ctrl_ops,
|
|
V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 0,
|
|
V4L2_EXPOSURE_AUTO);
|
|
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
|
|
V4L2_CID_EXPOSURE, MT9V032_TOTAL_SHUTTER_WIDTH_MIN,
|
|
MT9V032_TOTAL_SHUTTER_WIDTH_MAX, 1,
|
|
MT9V032_TOTAL_SHUTTER_WIDTH_DEF);
|
|
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
|
|
V4L2_CID_HBLANK, MT9V032_HORIZONTAL_BLANKING_MIN,
|
|
MT9V032_HORIZONTAL_BLANKING_MAX, 1,
|
|
MT9V032_HORIZONTAL_BLANKING_DEF);
|
|
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
|
|
V4L2_CID_VBLANK, MT9V032_VERTICAL_BLANKING_MIN,
|
|
MT9V032_VERTICAL_BLANKING_MAX, 1,
|
|
MT9V032_VERTICAL_BLANKING_DEF);
|
|
mt9v032->test_pattern = v4l2_ctrl_new_std_menu_items(&mt9v032->ctrls,
|
|
&mt9v032_ctrl_ops, V4L2_CID_TEST_PATTERN,
|
|
ARRAY_SIZE(mt9v032_test_pattern_menu) - 1, 0, 0,
|
|
mt9v032_test_pattern_menu);
|
|
mt9v032->test_pattern_color = v4l2_ctrl_new_custom(&mt9v032->ctrls,
|
|
&mt9v032_test_pattern_color, NULL);
|
|
|
|
v4l2_ctrl_cluster(2, &mt9v032->test_pattern);
|
|
|
|
mt9v032->pixel_rate =
|
|
v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
|
|
V4L2_CID_PIXEL_RATE, 0, 0, 1, 0);
|
|
|
|
if (pdata && pdata->link_freqs) {
|
|
unsigned int def = 0;
|
|
|
|
for (i = 0; pdata->link_freqs[i]; ++i) {
|
|
if (pdata->link_freqs[i] == pdata->link_def_freq)
|
|
def = i;
|
|
}
|
|
|
|
mt9v032->link_freq =
|
|
v4l2_ctrl_new_int_menu(&mt9v032->ctrls,
|
|
&mt9v032_ctrl_ops,
|
|
V4L2_CID_LINK_FREQ, i - 1, def,
|
|
pdata->link_freqs);
|
|
v4l2_ctrl_cluster(2, &mt9v032->link_freq);
|
|
}
|
|
|
|
|
|
mt9v032->subdev.ctrl_handler = &mt9v032->ctrls;
|
|
|
|
if (mt9v032->ctrls.error)
|
|
printk(KERN_INFO "%s: control initialization error %d\n",
|
|
__func__, mt9v032->ctrls.error);
|
|
|
|
mt9v032->crop.left = MT9V032_COLUMN_START_DEF;
|
|
mt9v032->crop.top = MT9V032_ROW_START_DEF;
|
|
mt9v032->crop.width = MT9V032_WINDOW_WIDTH_DEF;
|
|
mt9v032->crop.height = MT9V032_WINDOW_HEIGHT_DEF;
|
|
|
|
mt9v032->format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
|
|
mt9v032->format.width = MT9V032_WINDOW_WIDTH_DEF;
|
|
mt9v032->format.height = MT9V032_WINDOW_HEIGHT_DEF;
|
|
mt9v032->format.field = V4L2_FIELD_NONE;
|
|
mt9v032->format.colorspace = V4L2_COLORSPACE_SRGB;
|
|
|
|
mt9v032->aec_agc = MT9V032_AEC_ENABLE | MT9V032_AGC_ENABLE;
|
|
mt9v032->hblank = MT9V032_HORIZONTAL_BLANKING_DEF;
|
|
mt9v032->sysclk = MT9V032_SYSCLK_FREQ_DEF;
|
|
|
|
v4l2_i2c_subdev_init(&mt9v032->subdev, client, &mt9v032_subdev_ops);
|
|
mt9v032->subdev.internal_ops = &mt9v032_subdev_internal_ops;
|
|
mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
|
|
|
mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad, 0);
|
|
|
|
if (ret < 0)
|
|
v4l2_ctrl_handler_free(&mt9v032->ctrls);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mt9v032_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
|
|
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
|
|
|
|
v4l2_ctrl_handler_free(&mt9v032->ctrls);
|
|
v4l2_device_unregister_subdev(subdev);
|
|
media_entity_cleanup(&subdev->entity);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id mt9v032_id[] = {
|
|
{ "mt9v032", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, mt9v032_id);
|
|
|
|
static struct i2c_driver mt9v032_driver = {
|
|
.driver = {
|
|
.name = "mt9v032",
|
|
},
|
|
.probe = mt9v032_probe,
|
|
.remove = mt9v032_remove,
|
|
.id_table = mt9v032_id,
|
|
};
|
|
|
|
module_i2c_driver(mt9v032_driver);
|
|
|
|
MODULE_DESCRIPTION("Aptina MT9V032 Camera driver");
|
|
MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
|
|
MODULE_LICENSE("GPL");
|