![Maxime Ripard](/assets/img/avatar_default.png)
The autoexposure setup in the 1080p init array is redundant with the default value of the sensor. Remove it. Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Tested-by: Adam Ford <aford173@gmail.com> #imx6dq Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
3017 lines
81 KiB
C
3017 lines
81 KiB
C
/*
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* Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright (C) 2014-2017 Mentor Graphics Inc.
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
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#include <linux/clkdev.h>
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#include <linux/ctype.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/regulator/consumer.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <media/v4l2-async.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-event.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-subdev.h>
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/* min/typical/max system clock (xclk) frequencies */
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#define OV5640_XCLK_MIN 6000000
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#define OV5640_XCLK_MAX 54000000
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#define OV5640_DEFAULT_SLAVE_ID 0x3c
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#define OV5640_REG_SYS_RESET02 0x3002
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#define OV5640_REG_SYS_CLOCK_ENABLE02 0x3006
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#define OV5640_REG_SYS_CTRL0 0x3008
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#define OV5640_REG_CHIP_ID 0x300a
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#define OV5640_REG_IO_MIPI_CTRL00 0x300e
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#define OV5640_REG_PAD_OUTPUT_ENABLE01 0x3017
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#define OV5640_REG_PAD_OUTPUT_ENABLE02 0x3018
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#define OV5640_REG_PAD_OUTPUT00 0x3019
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#define OV5640_REG_SYSTEM_CONTROL1 0x302e
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#define OV5640_REG_SC_PLL_CTRL0 0x3034
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#define OV5640_REG_SC_PLL_CTRL1 0x3035
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#define OV5640_REG_SC_PLL_CTRL2 0x3036
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#define OV5640_REG_SC_PLL_CTRL3 0x3037
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#define OV5640_REG_SLAVE_ID 0x3100
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#define OV5640_REG_SCCB_SYS_CTRL1 0x3103
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#define OV5640_REG_SYS_ROOT_DIVIDER 0x3108
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#define OV5640_REG_AWB_R_GAIN 0x3400
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#define OV5640_REG_AWB_G_GAIN 0x3402
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#define OV5640_REG_AWB_B_GAIN 0x3404
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#define OV5640_REG_AWB_MANUAL_CTRL 0x3406
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#define OV5640_REG_AEC_PK_EXPOSURE_HI 0x3500
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#define OV5640_REG_AEC_PK_EXPOSURE_MED 0x3501
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#define OV5640_REG_AEC_PK_EXPOSURE_LO 0x3502
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#define OV5640_REG_AEC_PK_MANUAL 0x3503
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#define OV5640_REG_AEC_PK_REAL_GAIN 0x350a
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#define OV5640_REG_AEC_PK_VTS 0x350c
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#define OV5640_REG_TIMING_DVPHO 0x3808
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#define OV5640_REG_TIMING_DVPVO 0x380a
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#define OV5640_REG_TIMING_HTS 0x380c
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#define OV5640_REG_TIMING_VTS 0x380e
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#define OV5640_REG_TIMING_TC_REG20 0x3820
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#define OV5640_REG_TIMING_TC_REG21 0x3821
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#define OV5640_REG_AEC_CTRL00 0x3a00
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#define OV5640_REG_AEC_B50_STEP 0x3a08
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#define OV5640_REG_AEC_B60_STEP 0x3a0a
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#define OV5640_REG_AEC_CTRL0D 0x3a0d
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#define OV5640_REG_AEC_CTRL0E 0x3a0e
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#define OV5640_REG_AEC_CTRL0F 0x3a0f
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#define OV5640_REG_AEC_CTRL10 0x3a10
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#define OV5640_REG_AEC_CTRL11 0x3a11
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#define OV5640_REG_AEC_CTRL1B 0x3a1b
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#define OV5640_REG_AEC_CTRL1E 0x3a1e
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#define OV5640_REG_AEC_CTRL1F 0x3a1f
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#define OV5640_REG_HZ5060_CTRL00 0x3c00
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#define OV5640_REG_HZ5060_CTRL01 0x3c01
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#define OV5640_REG_SIGMADELTA_CTRL0C 0x3c0c
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#define OV5640_REG_FRAME_CTRL01 0x4202
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#define OV5640_REG_FORMAT_CONTROL00 0x4300
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#define OV5640_REG_POLARITY_CTRL00 0x4740
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#define OV5640_REG_MIPI_CTRL00 0x4800
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#define OV5640_REG_DEBUG_MODE 0x4814
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#define OV5640_REG_ISP_FORMAT_MUX_CTRL 0x501f
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#define OV5640_REG_PRE_ISP_TEST_SET1 0x503d
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#define OV5640_REG_SDE_CTRL0 0x5580
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#define OV5640_REG_SDE_CTRL1 0x5581
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#define OV5640_REG_SDE_CTRL3 0x5583
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#define OV5640_REG_SDE_CTRL4 0x5584
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#define OV5640_REG_SDE_CTRL5 0x5585
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#define OV5640_REG_AVG_READOUT 0x56a1
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enum ov5640_mode_id {
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OV5640_MODE_QCIF_176_144 = 0,
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OV5640_MODE_QVGA_320_240,
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OV5640_MODE_VGA_640_480,
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OV5640_MODE_NTSC_720_480,
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OV5640_MODE_PAL_720_576,
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OV5640_MODE_XGA_1024_768,
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OV5640_MODE_720P_1280_720,
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OV5640_MODE_1080P_1920_1080,
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OV5640_MODE_QSXGA_2592_1944,
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OV5640_NUM_MODES,
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};
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enum ov5640_frame_rate {
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OV5640_15_FPS = 0,
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OV5640_30_FPS,
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OV5640_60_FPS,
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OV5640_NUM_FRAMERATES,
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};
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struct ov5640_pixfmt {
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u32 code;
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u32 colorspace;
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};
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static const struct ov5640_pixfmt ov5640_formats[] = {
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{ MEDIA_BUS_FMT_JPEG_1X8, V4L2_COLORSPACE_JPEG, },
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{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_SRGB, },
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{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_SRGB, },
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{ MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB, },
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{ MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB, },
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};
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/*
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* FIXME: remove this when a subdev API becomes available
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* to set the MIPI CSI-2 virtual channel.
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*/
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static unsigned int virtual_channel;
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module_param(virtual_channel, uint, 0444);
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MODULE_PARM_DESC(virtual_channel,
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"MIPI CSI-2 virtual channel (0..3), default 0");
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static const int ov5640_framerates[] = {
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[OV5640_15_FPS] = 15,
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[OV5640_30_FPS] = 30,
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[OV5640_60_FPS] = 60,
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};
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/* regulator supplies */
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static const char * const ov5640_supply_name[] = {
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"DOVDD", /* Digital I/O (1.8V) supply */
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"DVDD", /* Digital Core (1.5V) supply */
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"AVDD", /* Analog (2.8V) supply */
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};
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#define OV5640_NUM_SUPPLIES ARRAY_SIZE(ov5640_supply_name)
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/*
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* Image size under 1280 * 960 are SUBSAMPLING
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* Image size upper 1280 * 960 are SCALING
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*/
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enum ov5640_downsize_mode {
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SUBSAMPLING,
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SCALING,
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};
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struct reg_value {
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u16 reg_addr;
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u8 val;
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u8 mask;
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u32 delay_ms;
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};
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struct ov5640_mode_info {
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enum ov5640_mode_id id;
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enum ov5640_downsize_mode dn_mode;
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u32 hact;
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u32 htot;
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u32 vact;
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u32 vtot;
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const struct reg_value *reg_data;
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u32 reg_data_size;
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};
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struct ov5640_ctrls {
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struct v4l2_ctrl_handler handler;
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struct {
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struct v4l2_ctrl *auto_exp;
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struct v4l2_ctrl *exposure;
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};
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struct {
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struct v4l2_ctrl *auto_wb;
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struct v4l2_ctrl *blue_balance;
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struct v4l2_ctrl *red_balance;
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};
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struct {
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struct v4l2_ctrl *auto_gain;
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struct v4l2_ctrl *gain;
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};
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struct v4l2_ctrl *brightness;
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struct v4l2_ctrl *light_freq;
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struct v4l2_ctrl *saturation;
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struct v4l2_ctrl *contrast;
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struct v4l2_ctrl *hue;
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struct v4l2_ctrl *test_pattern;
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struct v4l2_ctrl *hflip;
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struct v4l2_ctrl *vflip;
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};
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struct ov5640_dev {
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struct i2c_client *i2c_client;
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struct v4l2_subdev sd;
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struct media_pad pad;
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struct v4l2_fwnode_endpoint ep; /* the parsed DT endpoint info */
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struct clk *xclk; /* system clock to OV5640 */
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u32 xclk_freq;
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struct regulator_bulk_data supplies[OV5640_NUM_SUPPLIES];
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struct gpio_desc *reset_gpio;
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struct gpio_desc *pwdn_gpio;
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bool upside_down;
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/* lock to protect all members below */
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struct mutex lock;
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int power_count;
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struct v4l2_mbus_framefmt fmt;
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bool pending_fmt_change;
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const struct ov5640_mode_info *current_mode;
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const struct ov5640_mode_info *last_mode;
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enum ov5640_frame_rate current_fr;
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struct v4l2_fract frame_interval;
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struct ov5640_ctrls ctrls;
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u32 prev_sysclk, prev_hts;
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u32 ae_low, ae_high, ae_target;
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bool pending_mode_change;
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bool streaming;
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};
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static inline struct ov5640_dev *to_ov5640_dev(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct ov5640_dev, sd);
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}
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static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
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{
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return &container_of(ctrl->handler, struct ov5640_dev,
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ctrls.handler)->sd;
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}
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/*
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* FIXME: all of these register tables are likely filled with
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* entries that set the register to their power-on default values,
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* and which are otherwise not touched by this driver. Those entries
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* should be identified and removed to speed register load time
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* over i2c.
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*/
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/* YUV422 UYVY VGA@30fps */
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static const struct reg_value ov5640_init_setting_30fps_VGA[] = {
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{0x3103, 0x11, 0, 0}, {0x3008, 0x82, 0, 5}, {0x3008, 0x42, 0, 0},
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{0x3103, 0x03, 0, 0}, {0x3017, 0x00, 0, 0}, {0x3018, 0x00, 0, 0},
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{0x3630, 0x36, 0, 0},
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{0x3631, 0x0e, 0, 0}, {0x3632, 0xe2, 0, 0}, {0x3633, 0x12, 0, 0},
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{0x3621, 0xe0, 0, 0}, {0x3704, 0xa0, 0, 0}, {0x3703, 0x5a, 0, 0},
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{0x3715, 0x78, 0, 0}, {0x3717, 0x01, 0, 0}, {0x370b, 0x60, 0, 0},
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{0x3705, 0x1a, 0, 0}, {0x3905, 0x02, 0, 0}, {0x3906, 0x10, 0, 0},
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{0x3901, 0x0a, 0, 0}, {0x3731, 0x12, 0, 0}, {0x3600, 0x08, 0, 0},
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{0x3601, 0x33, 0, 0}, {0x302d, 0x60, 0, 0}, {0x3620, 0x52, 0, 0},
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{0x371b, 0x20, 0, 0}, {0x471c, 0x50, 0, 0}, {0x3a13, 0x43, 0, 0},
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{0x3a18, 0x00, 0, 0}, {0x3a19, 0xf8, 0, 0}, {0x3635, 0x13, 0, 0},
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{0x3636, 0x03, 0, 0}, {0x3634, 0x40, 0, 0}, {0x3622, 0x01, 0, 0},
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{0x3c01, 0xa4, 0, 0}, {0x3c04, 0x28, 0, 0}, {0x3c05, 0x98, 0, 0},
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{0x3c06, 0x00, 0, 0}, {0x3c07, 0x08, 0, 0}, {0x3c08, 0x00, 0, 0},
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{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
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{0x3820, 0x41, 0, 0}, {0x3821, 0x07, 0, 0}, {0x3814, 0x31, 0, 0},
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{0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
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{0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
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{0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
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{0x3810, 0x00, 0, 0},
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{0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
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{0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
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{0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
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{0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
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{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
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{0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
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{0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x3000, 0x00, 0, 0},
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{0x3002, 0x1c, 0, 0}, {0x3004, 0xff, 0, 0}, {0x3006, 0xc3, 0, 0},
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{0x302e, 0x08, 0, 0}, {0x4300, 0x3f, 0, 0},
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{0x501f, 0x00, 0, 0}, {0x4713, 0x03, 0, 0}, {0x4407, 0x04, 0, 0},
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{0x440e, 0x00, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
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{0x4837, 0x0a, 0, 0}, {0x3824, 0x02, 0, 0},
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{0x5000, 0xa7, 0, 0}, {0x5001, 0xa3, 0, 0}, {0x5180, 0xff, 0, 0},
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{0x5181, 0xf2, 0, 0}, {0x5182, 0x00, 0, 0}, {0x5183, 0x14, 0, 0},
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{0x5184, 0x25, 0, 0}, {0x5185, 0x24, 0, 0}, {0x5186, 0x09, 0, 0},
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{0x5187, 0x09, 0, 0}, {0x5188, 0x09, 0, 0}, {0x5189, 0x88, 0, 0},
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{0x518a, 0x54, 0, 0}, {0x518b, 0xee, 0, 0}, {0x518c, 0xb2, 0, 0},
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{0x518d, 0x50, 0, 0}, {0x518e, 0x34, 0, 0}, {0x518f, 0x6b, 0, 0},
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{0x5190, 0x46, 0, 0}, {0x5191, 0xf8, 0, 0}, {0x5192, 0x04, 0, 0},
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{0x5193, 0x70, 0, 0}, {0x5194, 0xf0, 0, 0}, {0x5195, 0xf0, 0, 0},
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{0x5196, 0x03, 0, 0}, {0x5197, 0x01, 0, 0}, {0x5198, 0x04, 0, 0},
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{0x5199, 0x6c, 0, 0}, {0x519a, 0x04, 0, 0}, {0x519b, 0x00, 0, 0},
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{0x519c, 0x09, 0, 0}, {0x519d, 0x2b, 0, 0}, {0x519e, 0x38, 0, 0},
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{0x5381, 0x1e, 0, 0}, {0x5382, 0x5b, 0, 0}, {0x5383, 0x08, 0, 0},
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{0x5384, 0x0a, 0, 0}, {0x5385, 0x7e, 0, 0}, {0x5386, 0x88, 0, 0},
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{0x5387, 0x7c, 0, 0}, {0x5388, 0x6c, 0, 0}, {0x5389, 0x10, 0, 0},
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{0x538a, 0x01, 0, 0}, {0x538b, 0x98, 0, 0}, {0x5300, 0x08, 0, 0},
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{0x5301, 0x30, 0, 0}, {0x5302, 0x10, 0, 0}, {0x5303, 0x00, 0, 0},
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{0x5304, 0x08, 0, 0}, {0x5305, 0x30, 0, 0}, {0x5306, 0x08, 0, 0},
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{0x5307, 0x16, 0, 0}, {0x5309, 0x08, 0, 0}, {0x530a, 0x30, 0, 0},
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{0x530b, 0x04, 0, 0}, {0x530c, 0x06, 0, 0}, {0x5480, 0x01, 0, 0},
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{0x5481, 0x08, 0, 0}, {0x5482, 0x14, 0, 0}, {0x5483, 0x28, 0, 0},
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{0x5484, 0x51, 0, 0}, {0x5485, 0x65, 0, 0}, {0x5486, 0x71, 0, 0},
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{0x5487, 0x7d, 0, 0}, {0x5488, 0x87, 0, 0}, {0x5489, 0x91, 0, 0},
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{0x548a, 0x9a, 0, 0}, {0x548b, 0xaa, 0, 0}, {0x548c, 0xb8, 0, 0},
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{0x548d, 0xcd, 0, 0}, {0x548e, 0xdd, 0, 0}, {0x548f, 0xea, 0, 0},
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{0x5490, 0x1d, 0, 0}, {0x5580, 0x02, 0, 0}, {0x5583, 0x40, 0, 0},
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{0x5584, 0x10, 0, 0}, {0x5589, 0x10, 0, 0}, {0x558a, 0x00, 0, 0},
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{0x558b, 0xf8, 0, 0}, {0x5800, 0x23, 0, 0}, {0x5801, 0x14, 0, 0},
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{0x5802, 0x0f, 0, 0}, {0x5803, 0x0f, 0, 0}, {0x5804, 0x12, 0, 0},
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{0x5805, 0x26, 0, 0}, {0x5806, 0x0c, 0, 0}, {0x5807, 0x08, 0, 0},
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{0x5808, 0x05, 0, 0}, {0x5809, 0x05, 0, 0}, {0x580a, 0x08, 0, 0},
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{0x580b, 0x0d, 0, 0}, {0x580c, 0x08, 0, 0}, {0x580d, 0x03, 0, 0},
|
|
{0x580e, 0x00, 0, 0}, {0x580f, 0x00, 0, 0}, {0x5810, 0x03, 0, 0},
|
|
{0x5811, 0x09, 0, 0}, {0x5812, 0x07, 0, 0}, {0x5813, 0x03, 0, 0},
|
|
{0x5814, 0x00, 0, 0}, {0x5815, 0x01, 0, 0}, {0x5816, 0x03, 0, 0},
|
|
{0x5817, 0x08, 0, 0}, {0x5818, 0x0d, 0, 0}, {0x5819, 0x08, 0, 0},
|
|
{0x581a, 0x05, 0, 0}, {0x581b, 0x06, 0, 0}, {0x581c, 0x08, 0, 0},
|
|
{0x581d, 0x0e, 0, 0}, {0x581e, 0x29, 0, 0}, {0x581f, 0x17, 0, 0},
|
|
{0x5820, 0x11, 0, 0}, {0x5821, 0x11, 0, 0}, {0x5822, 0x15, 0, 0},
|
|
{0x5823, 0x28, 0, 0}, {0x5824, 0x46, 0, 0}, {0x5825, 0x26, 0, 0},
|
|
{0x5826, 0x08, 0, 0}, {0x5827, 0x26, 0, 0}, {0x5828, 0x64, 0, 0},
|
|
{0x5829, 0x26, 0, 0}, {0x582a, 0x24, 0, 0}, {0x582b, 0x22, 0, 0},
|
|
{0x582c, 0x24, 0, 0}, {0x582d, 0x24, 0, 0}, {0x582e, 0x06, 0, 0},
|
|
{0x582f, 0x22, 0, 0}, {0x5830, 0x40, 0, 0}, {0x5831, 0x42, 0, 0},
|
|
{0x5832, 0x24, 0, 0}, {0x5833, 0x26, 0, 0}, {0x5834, 0x24, 0, 0},
|
|
{0x5835, 0x22, 0, 0}, {0x5836, 0x22, 0, 0}, {0x5837, 0x26, 0, 0},
|
|
{0x5838, 0x44, 0, 0}, {0x5839, 0x24, 0, 0}, {0x583a, 0x26, 0, 0},
|
|
{0x583b, 0x28, 0, 0}, {0x583c, 0x42, 0, 0}, {0x583d, 0xce, 0, 0},
|
|
{0x5025, 0x00, 0, 0}, {0x3a0f, 0x30, 0, 0}, {0x3a10, 0x28, 0, 0},
|
|
{0x3a1b, 0x30, 0, 0}, {0x3a1e, 0x26, 0, 0}, {0x3a11, 0x60, 0, 0},
|
|
{0x3a1f, 0x14, 0, 0}, {0x3008, 0x02, 0, 0}, {0x3c00, 0x04, 0, 300},
|
|
};
|
|
|
|
static const struct reg_value ov5640_setting_VGA_640_480[] = {
|
|
{0x3c07, 0x08, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3814, 0x31, 0, 0},
|
|
{0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
|
|
{0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
|
|
{0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
|
|
{0x3810, 0x00, 0, 0},
|
|
{0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
|
|
{0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
|
|
{0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
|
|
{0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
|
|
{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
|
|
{0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
|
|
{0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
|
|
{0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
|
|
{0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
|
|
};
|
|
|
|
static const struct reg_value ov5640_setting_XGA_1024_768[] = {
|
|
{0x3c07, 0x08, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3814, 0x31, 0, 0},
|
|
{0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
|
|
{0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
|
|
{0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
|
|
{0x3810, 0x00, 0, 0},
|
|
{0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
|
|
{0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
|
|
{0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
|
|
{0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
|
|
{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
|
|
{0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
|
|
{0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
|
|
{0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
|
|
{0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
|
|
};
|
|
|
|
static const struct reg_value ov5640_setting_QVGA_320_240[] = {
|
|
{0x3c07, 0x08, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3814, 0x31, 0, 0},
|
|
{0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
|
|
{0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
|
|
{0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
|
|
{0x3810, 0x00, 0, 0},
|
|
{0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
|
|
{0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
|
|
{0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
|
|
{0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
|
|
{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
|
|
{0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
|
|
{0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
|
|
{0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
|
|
{0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
|
|
};
|
|
|
|
static const struct reg_value ov5640_setting_QCIF_176_144[] = {
|
|
{0x3c07, 0x08, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3814, 0x31, 0, 0},
|
|
{0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
|
|
{0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
|
|
{0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
|
|
{0x3810, 0x00, 0, 0},
|
|
{0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
|
|
{0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
|
|
{0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
|
|
{0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
|
|
{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
|
|
{0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
|
|
{0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
|
|
{0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
|
|
{0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
|
|
};
|
|
|
|
static const struct reg_value ov5640_setting_NTSC_720_480[] = {
|
|
{0x3c07, 0x08, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3814, 0x31, 0, 0},
|
|
{0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
|
|
{0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
|
|
{0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
|
|
{0x3810, 0x00, 0, 0},
|
|
{0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x3c, 0, 0},
|
|
{0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
|
|
{0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
|
|
{0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
|
|
{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
|
|
{0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
|
|
{0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
|
|
{0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
|
|
{0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
|
|
};
|
|
|
|
static const struct reg_value ov5640_setting_PAL_720_576[] = {
|
|
{0x3c07, 0x08, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3814, 0x31, 0, 0},
|
|
{0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
|
|
{0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0},
|
|
{0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0},
|
|
{0x3810, 0x00, 0, 0},
|
|
{0x3811, 0x38, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0},
|
|
{0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
|
|
{0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
|
|
{0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
|
|
{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
|
|
{0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
|
|
{0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
|
|
{0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
|
|
{0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
|
|
};
|
|
|
|
static const struct reg_value ov5640_setting_720P_1280_720[] = {
|
|
{0x3c07, 0x07, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3814, 0x31, 0, 0},
|
|
{0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
|
|
{0x3802, 0x00, 0, 0}, {0x3803, 0xfa, 0, 0}, {0x3804, 0x0a, 0, 0},
|
|
{0x3805, 0x3f, 0, 0}, {0x3806, 0x06, 0, 0}, {0x3807, 0xa9, 0, 0},
|
|
{0x3810, 0x00, 0, 0},
|
|
{0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
|
|
{0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
|
|
{0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x02, 0, 0},
|
|
{0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0},
|
|
{0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0},
|
|
{0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0},
|
|
{0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x4713, 0x03, 0, 0},
|
|
{0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0},
|
|
{0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0},
|
|
};
|
|
|
|
static const struct reg_value ov5640_setting_1080P_1920_1080[] = {
|
|
{0x3008, 0x42, 0, 0},
|
|
{0x3c07, 0x08, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3814, 0x11, 0, 0},
|
|
{0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
|
|
{0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
|
|
{0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
|
|
{0x3810, 0x00, 0, 0},
|
|
{0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
|
|
{0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
|
|
{0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
|
|
{0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
|
|
{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
|
|
{0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
|
|
{0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, {0x4713, 0x03, 0, 0},
|
|
{0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
|
|
{0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0},
|
|
{0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3800, 0x01, 0, 0}, {0x3801, 0x50, 0, 0}, {0x3802, 0x01, 0, 0},
|
|
{0x3803, 0xb2, 0, 0}, {0x3804, 0x08, 0, 0}, {0x3805, 0xef, 0, 0},
|
|
{0x3806, 0x05, 0, 0}, {0x3807, 0xf1, 0, 0},
|
|
{0x3612, 0x2b, 0, 0}, {0x3708, 0x64, 0, 0},
|
|
{0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0},
|
|
{0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0},
|
|
{0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0},
|
|
{0x3a15, 0x60, 0, 0}, {0x4713, 0x02, 0, 0}, {0x4407, 0x04, 0, 0},
|
|
{0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0},
|
|
{0x4005, 0x1a, 0, 0}, {0x3008, 0x02, 0, 0},
|
|
};
|
|
|
|
static const struct reg_value ov5640_setting_QSXGA_2592_1944[] = {
|
|
{0x3c07, 0x08, 0, 0},
|
|
{0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
|
|
{0x3814, 0x11, 0, 0},
|
|
{0x3815, 0x11, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0},
|
|
{0x3802, 0x00, 0, 0}, {0x3803, 0x00, 0, 0}, {0x3804, 0x0a, 0, 0},
|
|
{0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9f, 0, 0},
|
|
{0x3810, 0x00, 0, 0},
|
|
{0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x04, 0, 0},
|
|
{0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
|
|
{0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
|
|
{0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
|
|
{0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
|
|
{0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
|
|
{0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0}, {0x4713, 0x03, 0, 0},
|
|
{0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
|
|
{0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 70},
|
|
};
|
|
|
|
/* power-on sensor init reg table */
|
|
static const struct ov5640_mode_info ov5640_mode_init_data = {
|
|
0, SUBSAMPLING, 640, 1896, 480, 984,
|
|
ov5640_init_setting_30fps_VGA,
|
|
ARRAY_SIZE(ov5640_init_setting_30fps_VGA),
|
|
};
|
|
|
|
static const struct ov5640_mode_info
|
|
ov5640_mode_data[OV5640_NUM_MODES] = {
|
|
{OV5640_MODE_QCIF_176_144, SUBSAMPLING,
|
|
176, 1896, 144, 984,
|
|
ov5640_setting_QCIF_176_144,
|
|
ARRAY_SIZE(ov5640_setting_QCIF_176_144)},
|
|
{OV5640_MODE_QVGA_320_240, SUBSAMPLING,
|
|
320, 1896, 240, 984,
|
|
ov5640_setting_QVGA_320_240,
|
|
ARRAY_SIZE(ov5640_setting_QVGA_320_240)},
|
|
{OV5640_MODE_VGA_640_480, SUBSAMPLING,
|
|
640, 1896, 480, 1080,
|
|
ov5640_setting_VGA_640_480,
|
|
ARRAY_SIZE(ov5640_setting_VGA_640_480)},
|
|
{OV5640_MODE_NTSC_720_480, SUBSAMPLING,
|
|
720, 1896, 480, 984,
|
|
ov5640_setting_NTSC_720_480,
|
|
ARRAY_SIZE(ov5640_setting_NTSC_720_480)},
|
|
{OV5640_MODE_PAL_720_576, SUBSAMPLING,
|
|
720, 1896, 576, 984,
|
|
ov5640_setting_PAL_720_576,
|
|
ARRAY_SIZE(ov5640_setting_PAL_720_576)},
|
|
{OV5640_MODE_XGA_1024_768, SUBSAMPLING,
|
|
1024, 1896, 768, 1080,
|
|
ov5640_setting_XGA_1024_768,
|
|
ARRAY_SIZE(ov5640_setting_XGA_1024_768)},
|
|
{OV5640_MODE_720P_1280_720, SUBSAMPLING,
|
|
1280, 1892, 720, 740,
|
|
ov5640_setting_720P_1280_720,
|
|
ARRAY_SIZE(ov5640_setting_720P_1280_720)},
|
|
{OV5640_MODE_1080P_1920_1080, SCALING,
|
|
1920, 2500, 1080, 1120,
|
|
ov5640_setting_1080P_1920_1080,
|
|
ARRAY_SIZE(ov5640_setting_1080P_1920_1080)},
|
|
{OV5640_MODE_QSXGA_2592_1944, SCALING,
|
|
2592, 2844, 1944, 1968,
|
|
ov5640_setting_QSXGA_2592_1944,
|
|
ARRAY_SIZE(ov5640_setting_QSXGA_2592_1944)},
|
|
};
|
|
|
|
static int ov5640_init_slave_id(struct ov5640_dev *sensor)
|
|
{
|
|
struct i2c_client *client = sensor->i2c_client;
|
|
struct i2c_msg msg;
|
|
u8 buf[3];
|
|
int ret;
|
|
|
|
if (client->addr == OV5640_DEFAULT_SLAVE_ID)
|
|
return 0;
|
|
|
|
buf[0] = OV5640_REG_SLAVE_ID >> 8;
|
|
buf[1] = OV5640_REG_SLAVE_ID & 0xff;
|
|
buf[2] = client->addr << 1;
|
|
|
|
msg.addr = OV5640_DEFAULT_SLAVE_ID;
|
|
msg.flags = 0;
|
|
msg.buf = buf;
|
|
msg.len = sizeof(buf);
|
|
|
|
ret = i2c_transfer(client->adapter, &msg, 1);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "%s: failed with %d\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_write_reg(struct ov5640_dev *sensor, u16 reg, u8 val)
|
|
{
|
|
struct i2c_client *client = sensor->i2c_client;
|
|
struct i2c_msg msg;
|
|
u8 buf[3];
|
|
int ret;
|
|
|
|
buf[0] = reg >> 8;
|
|
buf[1] = reg & 0xff;
|
|
buf[2] = val;
|
|
|
|
msg.addr = client->addr;
|
|
msg.flags = client->flags;
|
|
msg.buf = buf;
|
|
msg.len = sizeof(buf);
|
|
|
|
ret = i2c_transfer(client->adapter, &msg, 1);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "%s: error: reg=%x, val=%x\n",
|
|
__func__, reg, val);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_read_reg(struct ov5640_dev *sensor, u16 reg, u8 *val)
|
|
{
|
|
struct i2c_client *client = sensor->i2c_client;
|
|
struct i2c_msg msg[2];
|
|
u8 buf[2];
|
|
int ret;
|
|
|
|
buf[0] = reg >> 8;
|
|
buf[1] = reg & 0xff;
|
|
|
|
msg[0].addr = client->addr;
|
|
msg[0].flags = client->flags;
|
|
msg[0].buf = buf;
|
|
msg[0].len = sizeof(buf);
|
|
|
|
msg[1].addr = client->addr;
|
|
msg[1].flags = client->flags | I2C_M_RD;
|
|
msg[1].buf = buf;
|
|
msg[1].len = 1;
|
|
|
|
ret = i2c_transfer(client->adapter, msg, 2);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "%s: error: reg=%x\n",
|
|
__func__, reg);
|
|
return ret;
|
|
}
|
|
|
|
*val = buf[0];
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_read_reg16(struct ov5640_dev *sensor, u16 reg, u16 *val)
|
|
{
|
|
u8 hi, lo;
|
|
int ret;
|
|
|
|
ret = ov5640_read_reg(sensor, reg, &hi);
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_read_reg(sensor, reg + 1, &lo);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*val = ((u16)hi << 8) | (u16)lo;
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_write_reg16(struct ov5640_dev *sensor, u16 reg, u16 val)
|
|
{
|
|
int ret;
|
|
|
|
ret = ov5640_write_reg(sensor, reg, val >> 8);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return ov5640_write_reg(sensor, reg + 1, val & 0xff);
|
|
}
|
|
|
|
static int ov5640_mod_reg(struct ov5640_dev *sensor, u16 reg,
|
|
u8 mask, u8 val)
|
|
{
|
|
u8 readval;
|
|
int ret;
|
|
|
|
ret = ov5640_read_reg(sensor, reg, &readval);
|
|
if (ret)
|
|
return ret;
|
|
|
|
readval &= ~mask;
|
|
val &= mask;
|
|
val |= readval;
|
|
|
|
return ov5640_write_reg(sensor, reg, val);
|
|
}
|
|
|
|
/*
|
|
* After trying the various combinations, reading various
|
|
* documentations spreaded around the net, and from the various
|
|
* feedback, the clock tree is probably as follows:
|
|
*
|
|
* +--------------+
|
|
* | Ext. Clock |
|
|
* +-+------------+
|
|
* | +----------+
|
|
* +->| PLL1 | - reg 0x3036, for the multiplier
|
|
* +-+--------+ - reg 0x3037, bits 0-3 for the pre-divider
|
|
* | +--------------+
|
|
* +->| System Clock | - reg 0x3035, bits 4-7
|
|
* +-+------------+
|
|
* | +--------------+
|
|
* +->| MIPI Divider | - reg 0x3035, bits 0-3
|
|
* | +-+------------+
|
|
* | +----------------> MIPI SCLK
|
|
* | + +-----+
|
|
* | +->| / 2 |-------> MIPI BIT CLK
|
|
* | +-----+
|
|
* | +--------------+
|
|
* +->| PLL Root Div | - reg 0x3037, bit 4
|
|
* +-+------------+
|
|
* | +---------+
|
|
* +->| Bit Div | - reg 0x3035, bits 0-3
|
|
* +-+-------+
|
|
* | +-------------+
|
|
* +->| SCLK Div | - reg 0x3108, bits 0-1
|
|
* | +-+-----------+
|
|
* | +---------------> SCLK
|
|
* | +-------------+
|
|
* +->| SCLK 2X Div | - reg 0x3108, bits 2-3
|
|
* | +-+-----------+
|
|
* | +---------------> SCLK 2X
|
|
* | +-------------+
|
|
* +->| PCLK Div | - reg 0x3108, bits 4-5
|
|
* ++------------+
|
|
* + +-----------+
|
|
* +->| P_DIV | - reg 0x3035, bits 0-3
|
|
* +-----+-----+
|
|
* +------------> PCLK
|
|
*
|
|
* This is deviating from the datasheet at least for the register
|
|
* 0x3108, since it's said here that the PCLK would be clocked from
|
|
* the PLL.
|
|
*
|
|
* There seems to be also (unverified) constraints:
|
|
* - the PLL pre-divider output rate should be in the 4-27MHz range
|
|
* - the PLL multiplier output rate should be in the 500-1000MHz range
|
|
* - PCLK >= SCLK * 2 in YUV, >= SCLK in Raw or JPEG
|
|
*
|
|
* In the two latter cases, these constraints are met since our
|
|
* factors are hardcoded. If we were to change that, we would need to
|
|
* take this into account. The only varying parts are the PLL
|
|
* multiplier and the system clock divider, which are shared between
|
|
* all these clocks so won't cause any issue.
|
|
*/
|
|
|
|
/*
|
|
* This is supposed to be ranging from 1 to 8, but the value is always
|
|
* set to 3 in the vendor kernels.
|
|
*/
|
|
#define OV5640_PLL_PREDIV 3
|
|
|
|
#define OV5640_PLL_MULT_MIN 4
|
|
#define OV5640_PLL_MULT_MAX 252
|
|
|
|
/*
|
|
* This is supposed to be ranging from 1 to 16, but the value is
|
|
* always set to either 1 or 2 in the vendor kernels.
|
|
*/
|
|
#define OV5640_SYSDIV_MIN 1
|
|
#define OV5640_SYSDIV_MAX 16
|
|
|
|
/*
|
|
* Hardcode these values for scaler and non-scaler modes.
|
|
* FIXME: to be re-calcualted for 1 data lanes setups
|
|
*/
|
|
#define OV5640_MIPI_DIV_PCLK 2
|
|
#define OV5640_MIPI_DIV_SCLK 1
|
|
|
|
/*
|
|
* This is supposed to be ranging from 1 to 2, but the value is always
|
|
* set to 2 in the vendor kernels.
|
|
*/
|
|
#define OV5640_PLL_ROOT_DIV 2
|
|
#define OV5640_PLL_CTRL3_PLL_ROOT_DIV_2 BIT(4)
|
|
|
|
/*
|
|
* We only supports 8-bit formats at the moment
|
|
*/
|
|
#define OV5640_BIT_DIV 2
|
|
#define OV5640_PLL_CTRL0_MIPI_MODE_8BIT 0x08
|
|
|
|
/*
|
|
* This is supposed to be ranging from 1 to 8, but the value is always
|
|
* set to 2 in the vendor kernels.
|
|
*/
|
|
#define OV5640_SCLK_ROOT_DIV 2
|
|
|
|
/*
|
|
* This is hardcoded so that the consistency is maintained between SCLK and
|
|
* SCLK 2x.
|
|
*/
|
|
#define OV5640_SCLK2X_ROOT_DIV (OV5640_SCLK_ROOT_DIV / 2)
|
|
|
|
/*
|
|
* This is supposed to be ranging from 1 to 8, but the value is always
|
|
* set to 1 in the vendor kernels.
|
|
*/
|
|
#define OV5640_PCLK_ROOT_DIV 1
|
|
#define OV5640_PLL_SYS_ROOT_DIVIDER_BYPASS 0x00
|
|
|
|
static unsigned long ov5640_compute_sys_clk(struct ov5640_dev *sensor,
|
|
u8 pll_prediv, u8 pll_mult,
|
|
u8 sysdiv)
|
|
{
|
|
unsigned long sysclk = sensor->xclk_freq / pll_prediv * pll_mult;
|
|
|
|
/* PLL1 output cannot exceed 1GHz. */
|
|
if (sysclk / 1000000 > 1000)
|
|
return 0;
|
|
|
|
return sysclk / sysdiv;
|
|
}
|
|
|
|
static unsigned long ov5640_calc_sys_clk(struct ov5640_dev *sensor,
|
|
unsigned long rate,
|
|
u8 *pll_prediv, u8 *pll_mult,
|
|
u8 *sysdiv)
|
|
{
|
|
unsigned long best = ~0;
|
|
u8 best_sysdiv = 1, best_mult = 1;
|
|
u8 _sysdiv, _pll_mult;
|
|
|
|
for (_sysdiv = OV5640_SYSDIV_MIN;
|
|
_sysdiv <= OV5640_SYSDIV_MAX;
|
|
_sysdiv++) {
|
|
for (_pll_mult = OV5640_PLL_MULT_MIN;
|
|
_pll_mult <= OV5640_PLL_MULT_MAX;
|
|
_pll_mult++) {
|
|
unsigned long _rate;
|
|
|
|
/*
|
|
* The PLL multiplier cannot be odd if above
|
|
* 127.
|
|
*/
|
|
if (_pll_mult > 127 && (_pll_mult % 2))
|
|
continue;
|
|
|
|
_rate = ov5640_compute_sys_clk(sensor,
|
|
OV5640_PLL_PREDIV,
|
|
_pll_mult, _sysdiv);
|
|
|
|
/*
|
|
* We have reached the maximum allowed PLL1 output,
|
|
* increase sysdiv.
|
|
*/
|
|
if (!rate)
|
|
break;
|
|
|
|
/*
|
|
* Prefer rates above the expected clock rate than
|
|
* below, even if that means being less precise.
|
|
*/
|
|
if (_rate < rate)
|
|
continue;
|
|
|
|
if (abs(rate - _rate) < abs(rate - best)) {
|
|
best = _rate;
|
|
best_sysdiv = _sysdiv;
|
|
best_mult = _pll_mult;
|
|
}
|
|
|
|
if (_rate == rate)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
*sysdiv = best_sysdiv;
|
|
*pll_prediv = OV5640_PLL_PREDIV;
|
|
*pll_mult = best_mult;
|
|
|
|
return best;
|
|
}
|
|
|
|
/*
|
|
* ov5640_set_mipi_pclk() - Calculate the clock tree configuration values
|
|
* for the MIPI CSI-2 output.
|
|
*
|
|
* @rate: The requested bandwidth per lane in bytes per second.
|
|
* 'Bandwidth Per Lane' is calculated as:
|
|
* bpl = HTOT * VTOT * FPS * bpp / num_lanes;
|
|
*
|
|
* This function use the requested bandwidth to calculate:
|
|
* - sample_rate = bpl / (bpp / num_lanes);
|
|
* = bpl / (PLL_RDIV * BIT_DIV * PCLK_DIV * MIPI_DIV / num_lanes);
|
|
*
|
|
* - mipi_sclk = bpl / MIPI_DIV / 2; ( / 2 is for CSI-2 DDR)
|
|
*
|
|
* with these fixed parameters:
|
|
* PLL_RDIV = 2;
|
|
* BIT_DIVIDER = 2; (MIPI_BIT_MODE == 8 ? 2 : 2,5);
|
|
* PCLK_DIV = 1;
|
|
*
|
|
* The MIPI clock generation differs for modes that use the scaler and modes
|
|
* that do not. In case the scaler is in use, the MIPI_SCLK generates the MIPI
|
|
* BIT CLk, and thus:
|
|
*
|
|
* - mipi_sclk = bpl / MIPI_DIV / 2;
|
|
* MIPI_DIV = 1;
|
|
*
|
|
* For modes that do not go through the scaler, the MIPI BIT CLOCK is generated
|
|
* from the pixel clock, and thus:
|
|
*
|
|
* - sample_rate = bpl / (bpp / num_lanes);
|
|
* = bpl / (2 * 2 * 1 * MIPI_DIV / num_lanes);
|
|
* = bpl / (4 * MIPI_DIV / num_lanes);
|
|
* - MIPI_DIV = bpp / (4 * num_lanes);
|
|
*
|
|
* FIXME: this have been tested with 16bpp and 2 lanes setup only.
|
|
* MIPI_DIV is fixed to value 2, but it -might- be changed according to the
|
|
* above formula for setups with 1 lane or image formats with different bpp.
|
|
*
|
|
* FIXME: this deviates from the sensor manual documentation which is quite
|
|
* thin on the MIPI clock tree generation part.
|
|
*/
|
|
static int ov5640_set_mipi_pclk(struct ov5640_dev *sensor,
|
|
unsigned long rate)
|
|
{
|
|
const struct ov5640_mode_info *mode = sensor->current_mode;
|
|
u8 prediv, mult, sysdiv;
|
|
u8 mipi_div;
|
|
int ret;
|
|
|
|
/*
|
|
* 1280x720 is reported to use 'SUBSAMPLING' only,
|
|
* but according to the sensor manual it goes through the
|
|
* scaler before subsampling.
|
|
*/
|
|
if (mode->dn_mode == SCALING ||
|
|
(mode->id == OV5640_MODE_720P_1280_720))
|
|
mipi_div = OV5640_MIPI_DIV_SCLK;
|
|
else
|
|
mipi_div = OV5640_MIPI_DIV_PCLK;
|
|
|
|
ov5640_calc_sys_clk(sensor, rate, &prediv, &mult, &sysdiv);
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0,
|
|
0x0f, OV5640_PLL_CTRL0_MIPI_MODE_8BIT);
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1,
|
|
0xff, sysdiv << 4 | mipi_div);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2, 0xff, mult);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3,
|
|
0x1f, OV5640_PLL_CTRL3_PLL_ROOT_DIV_2 | prediv);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER,
|
|
0x30, OV5640_PLL_SYS_ROOT_DIVIDER_BYPASS);
|
|
}
|
|
|
|
static unsigned long ov5640_calc_pclk(struct ov5640_dev *sensor,
|
|
unsigned long rate,
|
|
u8 *pll_prediv, u8 *pll_mult, u8 *sysdiv,
|
|
u8 *pll_rdiv, u8 *bit_div, u8 *pclk_div)
|
|
{
|
|
unsigned long _rate = rate * OV5640_PLL_ROOT_DIV * OV5640_BIT_DIV *
|
|
OV5640_PCLK_ROOT_DIV;
|
|
|
|
_rate = ov5640_calc_sys_clk(sensor, _rate, pll_prediv, pll_mult,
|
|
sysdiv);
|
|
*pll_rdiv = OV5640_PLL_ROOT_DIV;
|
|
*bit_div = OV5640_BIT_DIV;
|
|
*pclk_div = OV5640_PCLK_ROOT_DIV;
|
|
|
|
return _rate / *pll_rdiv / *bit_div / *pclk_div;
|
|
}
|
|
|
|
static int ov5640_set_dvp_pclk(struct ov5640_dev *sensor, unsigned long rate)
|
|
{
|
|
u8 prediv, mult, sysdiv, pll_rdiv, bit_div, pclk_div;
|
|
int ret;
|
|
|
|
ov5640_calc_pclk(sensor, rate, &prediv, &mult, &sysdiv, &pll_rdiv,
|
|
&bit_div, &pclk_div);
|
|
|
|
if (bit_div == 2)
|
|
bit_div = 8;
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0,
|
|
0x0f, bit_div);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* We need to set sysdiv according to the clock, and to clear
|
|
* the MIPI divider.
|
|
*/
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1,
|
|
0xff, sysdiv << 4);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2,
|
|
0xff, mult);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3,
|
|
0x1f, prediv | ((pll_rdiv - 1) << 4));
|
|
if (ret)
|
|
return ret;
|
|
|
|
return ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x30,
|
|
(ilog2(pclk_div) << 4));
|
|
}
|
|
|
|
/* download ov5640 settings to sensor through i2c */
|
|
static int ov5640_set_timings(struct ov5640_dev *sensor,
|
|
const struct ov5640_mode_info *mode)
|
|
{
|
|
int ret;
|
|
|
|
ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPHO, mode->hact);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPVO, mode->vact);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HTS, mode->htot);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, mode->vtot);
|
|
}
|
|
|
|
static int ov5640_load_regs(struct ov5640_dev *sensor,
|
|
const struct ov5640_mode_info *mode)
|
|
{
|
|
const struct reg_value *regs = mode->reg_data;
|
|
unsigned int i;
|
|
u32 delay_ms;
|
|
u16 reg_addr;
|
|
u8 mask, val;
|
|
int ret = 0;
|
|
|
|
for (i = 0; i < mode->reg_data_size; ++i, ++regs) {
|
|
delay_ms = regs->delay_ms;
|
|
reg_addr = regs->reg_addr;
|
|
val = regs->val;
|
|
mask = regs->mask;
|
|
|
|
if (mask)
|
|
ret = ov5640_mod_reg(sensor, reg_addr, mask, val);
|
|
else
|
|
ret = ov5640_write_reg(sensor, reg_addr, val);
|
|
if (ret)
|
|
break;
|
|
|
|
if (delay_ms)
|
|
usleep_range(1000 * delay_ms, 1000 * delay_ms + 100);
|
|
}
|
|
|
|
return ov5640_set_timings(sensor, mode);
|
|
}
|
|
|
|
static int ov5640_set_autoexposure(struct ov5640_dev *sensor, bool on)
|
|
{
|
|
return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
|
|
BIT(0), on ? 0 : BIT(0));
|
|
}
|
|
|
|
/* read exposure, in number of line periods */
|
|
static int ov5640_get_exposure(struct ov5640_dev *sensor)
|
|
{
|
|
int exp, ret;
|
|
u8 temp;
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_HI, &temp);
|
|
if (ret)
|
|
return ret;
|
|
exp = ((int)temp & 0x0f) << 16;
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_MED, &temp);
|
|
if (ret)
|
|
return ret;
|
|
exp |= ((int)temp << 8);
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_LO, &temp);
|
|
if (ret)
|
|
return ret;
|
|
exp |= (int)temp;
|
|
|
|
return exp >> 4;
|
|
}
|
|
|
|
/* write exposure, given number of line periods */
|
|
static int ov5640_set_exposure(struct ov5640_dev *sensor, u32 exposure)
|
|
{
|
|
int ret;
|
|
|
|
exposure <<= 4;
|
|
|
|
ret = ov5640_write_reg(sensor,
|
|
OV5640_REG_AEC_PK_EXPOSURE_LO,
|
|
exposure & 0xff);
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg(sensor,
|
|
OV5640_REG_AEC_PK_EXPOSURE_MED,
|
|
(exposure >> 8) & 0xff);
|
|
if (ret)
|
|
return ret;
|
|
return ov5640_write_reg(sensor,
|
|
OV5640_REG_AEC_PK_EXPOSURE_HI,
|
|
(exposure >> 16) & 0x0f);
|
|
}
|
|
|
|
static int ov5640_get_gain(struct ov5640_dev *sensor)
|
|
{
|
|
u16 gain;
|
|
int ret;
|
|
|
|
ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN, &gain);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return gain & 0x3ff;
|
|
}
|
|
|
|
static int ov5640_set_gain(struct ov5640_dev *sensor, int gain)
|
|
{
|
|
return ov5640_write_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN,
|
|
(u16)gain & 0x3ff);
|
|
}
|
|
|
|
static int ov5640_set_autogain(struct ov5640_dev *sensor, bool on)
|
|
{
|
|
return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
|
|
BIT(1), on ? 0 : BIT(1));
|
|
}
|
|
|
|
static int ov5640_set_stream_dvp(struct ov5640_dev *sensor, bool on)
|
|
{
|
|
int ret;
|
|
unsigned int flags = sensor->ep.bus.parallel.flags;
|
|
u8 pclk_pol = 0;
|
|
u8 hsync_pol = 0;
|
|
u8 vsync_pol = 0;
|
|
|
|
/*
|
|
* Note about parallel port configuration.
|
|
*
|
|
* When configured in parallel mode, the OV5640 will
|
|
* output 10 bits data on DVP data lines [9:0].
|
|
* If only 8 bits data are wanted, the 8 bits data lines
|
|
* of the camera interface must be physically connected
|
|
* on the DVP data lines [9:2].
|
|
*
|
|
* Control lines polarity can be configured through
|
|
* devicetree endpoint control lines properties.
|
|
* If no endpoint control lines properties are set,
|
|
* polarity will be as below:
|
|
* - VSYNC: active high
|
|
* - HREF: active low
|
|
* - PCLK: active low
|
|
*/
|
|
|
|
if (on) {
|
|
/*
|
|
* configure parallel port control lines polarity
|
|
*
|
|
* POLARITY CTRL0
|
|
* - [5]: PCLK polarity (0: active low, 1: active high)
|
|
* - [1]: HREF polarity (0: active low, 1: active high)
|
|
* - [0]: VSYNC polarity (mismatch here between
|
|
* datasheet and hardware, 0 is active high
|
|
* and 1 is active low...)
|
|
*/
|
|
if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
|
|
pclk_pol = 1;
|
|
if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
|
|
hsync_pol = 1;
|
|
if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
|
|
vsync_pol = 1;
|
|
|
|
ret = ov5640_write_reg(sensor,
|
|
OV5640_REG_POLARITY_CTRL00,
|
|
(pclk_pol << 5) |
|
|
(hsync_pol << 1) |
|
|
vsync_pol);
|
|
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* powerdown MIPI TX/RX PHY & disable MIPI
|
|
*
|
|
* MIPI CONTROL 00
|
|
* 4: PWDN PHY TX
|
|
* 3: PWDN PHY RX
|
|
* 2: MIPI enable
|
|
*/
|
|
ret = ov5640_write_reg(sensor,
|
|
OV5640_REG_IO_MIPI_CTRL00, on ? 0x18 : 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* enable VSYNC/HREF/PCLK DVP control lines
|
|
* & D[9:6] DVP data lines
|
|
*
|
|
* PAD OUTPUT ENABLE 01
|
|
* - 6: VSYNC output enable
|
|
* - 5: HREF output enable
|
|
* - 4: PCLK output enable
|
|
* - [3:0]: D[9:6] output enable
|
|
*/
|
|
ret = ov5640_write_reg(sensor,
|
|
OV5640_REG_PAD_OUTPUT_ENABLE01,
|
|
on ? 0x7f : 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* enable D[5:0] DVP data lines
|
|
*
|
|
* PAD OUTPUT ENABLE 02
|
|
* - [7:2]: D[5:0] output enable
|
|
*/
|
|
return ov5640_write_reg(sensor,
|
|
OV5640_REG_PAD_OUTPUT_ENABLE02,
|
|
on ? 0xfc : 0);
|
|
}
|
|
|
|
static int ov5640_set_stream_mipi(struct ov5640_dev *sensor, bool on)
|
|
{
|
|
int ret;
|
|
|
|
/*
|
|
* Enable/disable the MIPI interface
|
|
*
|
|
* 0x300e = on ? 0x45 : 0x40
|
|
*
|
|
* FIXME: the sensor manual (version 2.03) reports
|
|
* [7:5] = 000 : 1 data lane mode
|
|
* [7:5] = 001 : 2 data lanes mode
|
|
* But this settings do not work, while the following ones
|
|
* have been validated for 2 data lanes mode.
|
|
*
|
|
* [7:5] = 010 : 2 data lanes mode
|
|
* [4] = 0 : Power up MIPI HS Tx
|
|
* [3] = 0 : Power up MIPI LS Rx
|
|
* [2] = 1/0 : MIPI interface enable/disable
|
|
* [1:0] = 01/00: FIXME: 'debug'
|
|
*/
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00,
|
|
on ? 0x45 : 0x40);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return ov5640_write_reg(sensor, OV5640_REG_FRAME_CTRL01,
|
|
on ? 0x00 : 0x0f);
|
|
}
|
|
|
|
static int ov5640_get_sysclk(struct ov5640_dev *sensor)
|
|
{
|
|
/* calculate sysclk */
|
|
u32 xvclk = sensor->xclk_freq / 10000;
|
|
u32 multiplier, prediv, VCO, sysdiv, pll_rdiv;
|
|
u32 sclk_rdiv_map[] = {1, 2, 4, 8};
|
|
u32 bit_div2x = 1, sclk_rdiv, sysclk;
|
|
u8 temp1, temp2;
|
|
int ret;
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL0, &temp1);
|
|
if (ret)
|
|
return ret;
|
|
temp2 = temp1 & 0x0f;
|
|
if (temp2 == 8 || temp2 == 10)
|
|
bit_div2x = temp2 / 2;
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL1, &temp1);
|
|
if (ret)
|
|
return ret;
|
|
sysdiv = temp1 >> 4;
|
|
if (sysdiv == 0)
|
|
sysdiv = 16;
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL2, &temp1);
|
|
if (ret)
|
|
return ret;
|
|
multiplier = temp1;
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL3, &temp1);
|
|
if (ret)
|
|
return ret;
|
|
prediv = temp1 & 0x0f;
|
|
pll_rdiv = ((temp1 >> 4) & 0x01) + 1;
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, &temp1);
|
|
if (ret)
|
|
return ret;
|
|
temp2 = temp1 & 0x03;
|
|
sclk_rdiv = sclk_rdiv_map[temp2];
|
|
|
|
if (!prediv || !sysdiv || !pll_rdiv || !bit_div2x)
|
|
return -EINVAL;
|
|
|
|
VCO = xvclk * multiplier / prediv;
|
|
|
|
sysclk = VCO / sysdiv / pll_rdiv * 2 / bit_div2x / sclk_rdiv;
|
|
|
|
return sysclk;
|
|
}
|
|
|
|
static int ov5640_set_night_mode(struct ov5640_dev *sensor)
|
|
{
|
|
/* read HTS from register settings */
|
|
u8 mode;
|
|
int ret;
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_AEC_CTRL00, &mode);
|
|
if (ret)
|
|
return ret;
|
|
mode &= 0xfb;
|
|
return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL00, mode);
|
|
}
|
|
|
|
static int ov5640_get_hts(struct ov5640_dev *sensor)
|
|
{
|
|
/* read HTS from register settings */
|
|
u16 hts;
|
|
int ret;
|
|
|
|
ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_HTS, &hts);
|
|
if (ret)
|
|
return ret;
|
|
return hts;
|
|
}
|
|
|
|
static int ov5640_get_vts(struct ov5640_dev *sensor)
|
|
{
|
|
u16 vts;
|
|
int ret;
|
|
|
|
ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_VTS, &vts);
|
|
if (ret)
|
|
return ret;
|
|
return vts;
|
|
}
|
|
|
|
static int ov5640_set_vts(struct ov5640_dev *sensor, int vts)
|
|
{
|
|
return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, vts);
|
|
}
|
|
|
|
static int ov5640_get_light_freq(struct ov5640_dev *sensor)
|
|
{
|
|
/* get banding filter value */
|
|
int ret, light_freq = 0;
|
|
u8 temp, temp1;
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL01, &temp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (temp & 0x80) {
|
|
/* manual */
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL00,
|
|
&temp1);
|
|
if (ret)
|
|
return ret;
|
|
if (temp1 & 0x04) {
|
|
/* 50Hz */
|
|
light_freq = 50;
|
|
} else {
|
|
/* 60Hz */
|
|
light_freq = 60;
|
|
}
|
|
} else {
|
|
/* auto */
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_SIGMADELTA_CTRL0C,
|
|
&temp1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (temp1 & 0x01) {
|
|
/* 50Hz */
|
|
light_freq = 50;
|
|
} else {
|
|
/* 60Hz */
|
|
}
|
|
}
|
|
|
|
return light_freq;
|
|
}
|
|
|
|
static int ov5640_set_bandingfilter(struct ov5640_dev *sensor)
|
|
{
|
|
u32 band_step60, max_band60, band_step50, max_band50, prev_vts;
|
|
int ret;
|
|
|
|
/* read preview PCLK */
|
|
ret = ov5640_get_sysclk(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret == 0)
|
|
return -EINVAL;
|
|
sensor->prev_sysclk = ret;
|
|
/* read preview HTS */
|
|
ret = ov5640_get_hts(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret == 0)
|
|
return -EINVAL;
|
|
sensor->prev_hts = ret;
|
|
|
|
/* read preview VTS */
|
|
ret = ov5640_get_vts(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
prev_vts = ret;
|
|
|
|
/* calculate banding filter */
|
|
/* 60Hz */
|
|
band_step60 = sensor->prev_sysclk * 100 / sensor->prev_hts * 100 / 120;
|
|
ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B60_STEP, band_step60);
|
|
if (ret)
|
|
return ret;
|
|
if (!band_step60)
|
|
return -EINVAL;
|
|
max_band60 = (int)((prev_vts - 4) / band_step60);
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0D, max_band60);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* 50Hz */
|
|
band_step50 = sensor->prev_sysclk * 100 / sensor->prev_hts;
|
|
ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B50_STEP, band_step50);
|
|
if (ret)
|
|
return ret;
|
|
if (!band_step50)
|
|
return -EINVAL;
|
|
max_band50 = (int)((prev_vts - 4) / band_step50);
|
|
return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0E, max_band50);
|
|
}
|
|
|
|
static int ov5640_set_ae_target(struct ov5640_dev *sensor, int target)
|
|
{
|
|
/* stable in high */
|
|
u32 fast_high, fast_low;
|
|
int ret;
|
|
|
|
sensor->ae_low = target * 23 / 25; /* 0.92 */
|
|
sensor->ae_high = target * 27 / 25; /* 1.08 */
|
|
|
|
fast_high = sensor->ae_high << 1;
|
|
if (fast_high > 255)
|
|
fast_high = 255;
|
|
|
|
fast_low = sensor->ae_low >> 1;
|
|
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0F, sensor->ae_high);
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL10, sensor->ae_low);
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1B, sensor->ae_high);
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1E, sensor->ae_low);
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL11, fast_high);
|
|
if (ret)
|
|
return ret;
|
|
return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1F, fast_low);
|
|
}
|
|
|
|
static int ov5640_get_binning(struct ov5640_dev *sensor)
|
|
{
|
|
u8 temp;
|
|
int ret;
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_TIMING_TC_REG21, &temp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return temp & BIT(0);
|
|
}
|
|
|
|
static int ov5640_set_binning(struct ov5640_dev *sensor, bool enable)
|
|
{
|
|
int ret;
|
|
|
|
/*
|
|
* TIMING TC REG21:
|
|
* - [0]: Horizontal binning enable
|
|
*/
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
|
|
BIT(0), enable ? BIT(0) : 0);
|
|
if (ret)
|
|
return ret;
|
|
/*
|
|
* TIMING TC REG20:
|
|
* - [0]: Undocumented, but hardcoded init sequences
|
|
* are always setting REG21/REG20 bit 0 to same value...
|
|
*/
|
|
return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
|
|
BIT(0), enable ? BIT(0) : 0);
|
|
}
|
|
|
|
static int ov5640_set_virtual_channel(struct ov5640_dev *sensor)
|
|
{
|
|
struct i2c_client *client = sensor->i2c_client;
|
|
u8 temp, channel = virtual_channel;
|
|
int ret;
|
|
|
|
if (channel > 3) {
|
|
dev_err(&client->dev,
|
|
"%s: wrong virtual_channel parameter, expected (0..3), got %d\n",
|
|
__func__, channel);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_DEBUG_MODE, &temp);
|
|
if (ret)
|
|
return ret;
|
|
temp &= ~(3 << 6);
|
|
temp |= (channel << 6);
|
|
return ov5640_write_reg(sensor, OV5640_REG_DEBUG_MODE, temp);
|
|
}
|
|
|
|
static const struct ov5640_mode_info *
|
|
ov5640_find_mode(struct ov5640_dev *sensor, enum ov5640_frame_rate fr,
|
|
int width, int height, bool nearest)
|
|
{
|
|
const struct ov5640_mode_info *mode;
|
|
|
|
mode = v4l2_find_nearest_size(ov5640_mode_data,
|
|
ARRAY_SIZE(ov5640_mode_data),
|
|
hact, vact,
|
|
width, height);
|
|
|
|
if (!mode ||
|
|
(!nearest && (mode->hact != width || mode->vact != height)))
|
|
return NULL;
|
|
|
|
/* Only 640x480 can operate at 60fps (for now) */
|
|
if (fr == OV5640_60_FPS &&
|
|
!(mode->hact == 640 && mode->vact == 480))
|
|
return NULL;
|
|
|
|
return mode;
|
|
}
|
|
|
|
/*
|
|
* sensor changes between scaling and subsampling, go through
|
|
* exposure calculation
|
|
*/
|
|
static int ov5640_set_mode_exposure_calc(struct ov5640_dev *sensor,
|
|
const struct ov5640_mode_info *mode)
|
|
{
|
|
u32 prev_shutter, prev_gain16;
|
|
u32 cap_shutter, cap_gain16;
|
|
u32 cap_sysclk, cap_hts, cap_vts;
|
|
u32 light_freq, cap_bandfilt, cap_maxband;
|
|
u32 cap_gain16_shutter;
|
|
u8 average;
|
|
int ret;
|
|
|
|
if (!mode->reg_data)
|
|
return -EINVAL;
|
|
|
|
/* read preview shutter */
|
|
ret = ov5640_get_exposure(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
prev_shutter = ret;
|
|
ret = ov5640_get_binning(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret && mode->id != OV5640_MODE_720P_1280_720 &&
|
|
mode->id != OV5640_MODE_1080P_1920_1080)
|
|
prev_shutter *= 2;
|
|
|
|
/* read preview gain */
|
|
ret = ov5640_get_gain(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
prev_gain16 = ret;
|
|
|
|
/* get average */
|
|
ret = ov5640_read_reg(sensor, OV5640_REG_AVG_READOUT, &average);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* turn off night mode for capture */
|
|
ret = ov5640_set_night_mode(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Write capture setting */
|
|
ret = ov5640_load_regs(sensor, mode);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* read capture VTS */
|
|
ret = ov5640_get_vts(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
cap_vts = ret;
|
|
ret = ov5640_get_hts(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret == 0)
|
|
return -EINVAL;
|
|
cap_hts = ret;
|
|
|
|
ret = ov5640_get_sysclk(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret == 0)
|
|
return -EINVAL;
|
|
cap_sysclk = ret;
|
|
|
|
/* calculate capture banding filter */
|
|
ret = ov5640_get_light_freq(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
light_freq = ret;
|
|
|
|
if (light_freq == 60) {
|
|
/* 60Hz */
|
|
cap_bandfilt = cap_sysclk * 100 / cap_hts * 100 / 120;
|
|
} else {
|
|
/* 50Hz */
|
|
cap_bandfilt = cap_sysclk * 100 / cap_hts;
|
|
}
|
|
|
|
if (!sensor->prev_sysclk) {
|
|
ret = ov5640_get_sysclk(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret == 0)
|
|
return -EINVAL;
|
|
sensor->prev_sysclk = ret;
|
|
}
|
|
|
|
if (!cap_bandfilt)
|
|
return -EINVAL;
|
|
|
|
cap_maxband = (int)((cap_vts - 4) / cap_bandfilt);
|
|
|
|
/* calculate capture shutter/gain16 */
|
|
if (average > sensor->ae_low && average < sensor->ae_high) {
|
|
/* in stable range */
|
|
cap_gain16_shutter =
|
|
prev_gain16 * prev_shutter *
|
|
cap_sysclk / sensor->prev_sysclk *
|
|
sensor->prev_hts / cap_hts *
|
|
sensor->ae_target / average;
|
|
} else {
|
|
cap_gain16_shutter =
|
|
prev_gain16 * prev_shutter *
|
|
cap_sysclk / sensor->prev_sysclk *
|
|
sensor->prev_hts / cap_hts;
|
|
}
|
|
|
|
/* gain to shutter */
|
|
if (cap_gain16_shutter < (cap_bandfilt * 16)) {
|
|
/* shutter < 1/100 */
|
|
cap_shutter = cap_gain16_shutter / 16;
|
|
if (cap_shutter < 1)
|
|
cap_shutter = 1;
|
|
|
|
cap_gain16 = cap_gain16_shutter / cap_shutter;
|
|
if (cap_gain16 < 16)
|
|
cap_gain16 = 16;
|
|
} else {
|
|
if (cap_gain16_shutter > (cap_bandfilt * cap_maxband * 16)) {
|
|
/* exposure reach max */
|
|
cap_shutter = cap_bandfilt * cap_maxband;
|
|
if (!cap_shutter)
|
|
return -EINVAL;
|
|
|
|
cap_gain16 = cap_gain16_shutter / cap_shutter;
|
|
} else {
|
|
/* 1/100 < (cap_shutter = n/100) =< max */
|
|
cap_shutter =
|
|
((int)(cap_gain16_shutter / 16 / cap_bandfilt))
|
|
* cap_bandfilt;
|
|
if (!cap_shutter)
|
|
return -EINVAL;
|
|
|
|
cap_gain16 = cap_gain16_shutter / cap_shutter;
|
|
}
|
|
}
|
|
|
|
/* set capture gain */
|
|
ret = ov5640_set_gain(sensor, cap_gain16);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* write capture shutter */
|
|
if (cap_shutter > (cap_vts - 4)) {
|
|
cap_vts = cap_shutter + 4;
|
|
ret = ov5640_set_vts(sensor, cap_vts);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* set exposure */
|
|
return ov5640_set_exposure(sensor, cap_shutter);
|
|
}
|
|
|
|
/*
|
|
* if sensor changes inside scaling or subsampling
|
|
* change mode directly
|
|
*/
|
|
static int ov5640_set_mode_direct(struct ov5640_dev *sensor,
|
|
const struct ov5640_mode_info *mode)
|
|
{
|
|
if (!mode->reg_data)
|
|
return -EINVAL;
|
|
|
|
/* Write capture setting */
|
|
return ov5640_load_regs(sensor, mode);
|
|
}
|
|
|
|
static int ov5640_set_mode(struct ov5640_dev *sensor)
|
|
{
|
|
const struct ov5640_mode_info *mode = sensor->current_mode;
|
|
const struct ov5640_mode_info *orig_mode = sensor->last_mode;
|
|
enum ov5640_downsize_mode dn_mode, orig_dn_mode;
|
|
bool auto_gain = sensor->ctrls.auto_gain->val == 1;
|
|
bool auto_exp = sensor->ctrls.auto_exp->val == V4L2_EXPOSURE_AUTO;
|
|
unsigned long rate;
|
|
int ret;
|
|
|
|
dn_mode = mode->dn_mode;
|
|
orig_dn_mode = orig_mode->dn_mode;
|
|
|
|
/* auto gain and exposure must be turned off when changing modes */
|
|
if (auto_gain) {
|
|
ret = ov5640_set_autogain(sensor, false);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (auto_exp) {
|
|
ret = ov5640_set_autoexposure(sensor, false);
|
|
if (ret)
|
|
goto restore_auto_gain;
|
|
}
|
|
|
|
/*
|
|
* All the formats we support have 16 bits per pixel, seems to require
|
|
* the same rate than YUV, so we can just use 16 bpp all the time.
|
|
*/
|
|
rate = mode->vtot * mode->htot * 16;
|
|
rate *= ov5640_framerates[sensor->current_fr];
|
|
if (sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY) {
|
|
rate = rate / sensor->ep.bus.mipi_csi2.num_data_lanes;
|
|
ret = ov5640_set_mipi_pclk(sensor, rate);
|
|
} else {
|
|
rate = rate / sensor->ep.bus.parallel.bus_width;
|
|
ret = ov5640_set_dvp_pclk(sensor, rate);
|
|
}
|
|
|
|
if (ret < 0)
|
|
return 0;
|
|
|
|
if ((dn_mode == SUBSAMPLING && orig_dn_mode == SCALING) ||
|
|
(dn_mode == SCALING && orig_dn_mode == SUBSAMPLING)) {
|
|
/*
|
|
* change between subsampling and scaling
|
|
* go through exposure calculation
|
|
*/
|
|
ret = ov5640_set_mode_exposure_calc(sensor, mode);
|
|
} else {
|
|
/*
|
|
* change inside subsampling or scaling
|
|
* download firmware directly
|
|
*/
|
|
ret = ov5640_set_mode_direct(sensor, mode);
|
|
}
|
|
if (ret < 0)
|
|
goto restore_auto_exp_gain;
|
|
|
|
/* restore auto gain and exposure */
|
|
if (auto_gain)
|
|
ov5640_set_autogain(sensor, true);
|
|
if (auto_exp)
|
|
ov5640_set_autoexposure(sensor, true);
|
|
|
|
ret = ov5640_set_binning(sensor, dn_mode != SCALING);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = ov5640_set_ae_target(sensor, sensor->ae_target);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = ov5640_get_light_freq(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = ov5640_set_bandingfilter(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = ov5640_set_virtual_channel(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
sensor->pending_mode_change = false;
|
|
sensor->last_mode = mode;
|
|
|
|
return 0;
|
|
|
|
restore_auto_exp_gain:
|
|
if (auto_exp)
|
|
ov5640_set_autoexposure(sensor, true);
|
|
restore_auto_gain:
|
|
if (auto_gain)
|
|
ov5640_set_autogain(sensor, true);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_set_framefmt(struct ov5640_dev *sensor,
|
|
struct v4l2_mbus_framefmt *format);
|
|
|
|
/* restore the last set video mode after chip power-on */
|
|
static int ov5640_restore_mode(struct ov5640_dev *sensor)
|
|
{
|
|
int ret;
|
|
|
|
/* first load the initial register values */
|
|
ret = ov5640_load_regs(sensor, &ov5640_mode_init_data);
|
|
if (ret < 0)
|
|
return ret;
|
|
sensor->last_mode = &ov5640_mode_init_data;
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f,
|
|
(ilog2(OV5640_SCLK2X_ROOT_DIV) << 2) |
|
|
ilog2(OV5640_SCLK_ROOT_DIV));
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* now restore the last capture mode */
|
|
ret = ov5640_set_mode(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return ov5640_set_framefmt(sensor, &sensor->fmt);
|
|
}
|
|
|
|
static void ov5640_power(struct ov5640_dev *sensor, bool enable)
|
|
{
|
|
gpiod_set_value_cansleep(sensor->pwdn_gpio, enable ? 0 : 1);
|
|
}
|
|
|
|
static void ov5640_reset(struct ov5640_dev *sensor)
|
|
{
|
|
if (!sensor->reset_gpio)
|
|
return;
|
|
|
|
gpiod_set_value_cansleep(sensor->reset_gpio, 0);
|
|
|
|
/* camera power cycle */
|
|
ov5640_power(sensor, false);
|
|
usleep_range(5000, 10000);
|
|
ov5640_power(sensor, true);
|
|
usleep_range(5000, 10000);
|
|
|
|
gpiod_set_value_cansleep(sensor->reset_gpio, 1);
|
|
usleep_range(1000, 2000);
|
|
|
|
gpiod_set_value_cansleep(sensor->reset_gpio, 0);
|
|
usleep_range(5000, 10000);
|
|
}
|
|
|
|
static int ov5640_set_power_on(struct ov5640_dev *sensor)
|
|
{
|
|
struct i2c_client *client = sensor->i2c_client;
|
|
int ret;
|
|
|
|
ret = clk_prepare_enable(sensor->xclk);
|
|
if (ret) {
|
|
dev_err(&client->dev, "%s: failed to enable clock\n",
|
|
__func__);
|
|
return ret;
|
|
}
|
|
|
|
ret = regulator_bulk_enable(OV5640_NUM_SUPPLIES,
|
|
sensor->supplies);
|
|
if (ret) {
|
|
dev_err(&client->dev, "%s: failed to enable regulators\n",
|
|
__func__);
|
|
goto xclk_off;
|
|
}
|
|
|
|
ov5640_reset(sensor);
|
|
ov5640_power(sensor, true);
|
|
|
|
ret = ov5640_init_slave_id(sensor);
|
|
if (ret)
|
|
goto power_off;
|
|
|
|
return 0;
|
|
|
|
power_off:
|
|
ov5640_power(sensor, false);
|
|
regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
|
|
xclk_off:
|
|
clk_disable_unprepare(sensor->xclk);
|
|
return ret;
|
|
}
|
|
|
|
static void ov5640_set_power_off(struct ov5640_dev *sensor)
|
|
{
|
|
ov5640_power(sensor, false);
|
|
regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
|
|
clk_disable_unprepare(sensor->xclk);
|
|
}
|
|
|
|
static int ov5640_set_power(struct ov5640_dev *sensor, bool on)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (on) {
|
|
ret = ov5640_set_power_on(sensor);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ov5640_restore_mode(sensor);
|
|
if (ret)
|
|
goto power_off;
|
|
|
|
/* We're done here for DVP bus, while CSI-2 needs setup. */
|
|
if (sensor->ep.bus_type != V4L2_MBUS_CSI2_DPHY)
|
|
return 0;
|
|
|
|
/*
|
|
* Power up MIPI HS Tx and LS Rx; 2 data lanes mode
|
|
*
|
|
* 0x300e = 0x40
|
|
* [7:5] = 010 : 2 data lanes mode (see FIXME note in
|
|
* "ov5640_set_stream_mipi()")
|
|
* [4] = 0 : Power up MIPI HS Tx
|
|
* [3] = 0 : Power up MIPI LS Rx
|
|
* [2] = 0 : MIPI interface disabled
|
|
*/
|
|
ret = ov5640_write_reg(sensor,
|
|
OV5640_REG_IO_MIPI_CTRL00, 0x40);
|
|
if (ret)
|
|
goto power_off;
|
|
|
|
/*
|
|
* Gate clock and set LP11 in 'no packets mode' (idle)
|
|
*
|
|
* 0x4800 = 0x24
|
|
* [5] = 1 : Gate clock when 'no packets'
|
|
* [2] = 1 : MIPI bus in LP11 when 'no packets'
|
|
*/
|
|
ret = ov5640_write_reg(sensor,
|
|
OV5640_REG_MIPI_CTRL00, 0x24);
|
|
if (ret)
|
|
goto power_off;
|
|
|
|
/*
|
|
* Set data lanes and clock in LP11 when 'sleeping'
|
|
*
|
|
* 0x3019 = 0x70
|
|
* [6] = 1 : MIPI data lane 2 in LP11 when 'sleeping'
|
|
* [5] = 1 : MIPI data lane 1 in LP11 when 'sleeping'
|
|
* [4] = 1 : MIPI clock lane in LP11 when 'sleeping'
|
|
*/
|
|
ret = ov5640_write_reg(sensor,
|
|
OV5640_REG_PAD_OUTPUT00, 0x70);
|
|
if (ret)
|
|
goto power_off;
|
|
|
|
/* Give lanes some time to coax into LP11 state. */
|
|
usleep_range(500, 1000);
|
|
|
|
} else {
|
|
if (sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY) {
|
|
/* Reset MIPI bus settings to their default values. */
|
|
ov5640_write_reg(sensor,
|
|
OV5640_REG_IO_MIPI_CTRL00, 0x58);
|
|
ov5640_write_reg(sensor,
|
|
OV5640_REG_MIPI_CTRL00, 0x04);
|
|
ov5640_write_reg(sensor,
|
|
OV5640_REG_PAD_OUTPUT00, 0x00);
|
|
}
|
|
|
|
ov5640_set_power_off(sensor);
|
|
}
|
|
|
|
return 0;
|
|
|
|
power_off:
|
|
ov5640_set_power_off(sensor);
|
|
return ret;
|
|
}
|
|
|
|
/* --------------- Subdev Operations --------------- */
|
|
|
|
static int ov5640_s_power(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
int ret = 0;
|
|
|
|
mutex_lock(&sensor->lock);
|
|
|
|
/*
|
|
* If the power count is modified from 0 to != 0 or from != 0 to 0,
|
|
* update the power state.
|
|
*/
|
|
if (sensor->power_count == !on) {
|
|
ret = ov5640_set_power(sensor, !!on);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
/* Update the power count. */
|
|
sensor->power_count += on ? 1 : -1;
|
|
WARN_ON(sensor->power_count < 0);
|
|
out:
|
|
mutex_unlock(&sensor->lock);
|
|
|
|
if (on && !ret && sensor->power_count == 1) {
|
|
/* restore controls */
|
|
ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_try_frame_interval(struct ov5640_dev *sensor,
|
|
struct v4l2_fract *fi,
|
|
u32 width, u32 height)
|
|
{
|
|
const struct ov5640_mode_info *mode;
|
|
enum ov5640_frame_rate rate = OV5640_30_FPS;
|
|
int minfps, maxfps, best_fps, fps;
|
|
int i;
|
|
|
|
minfps = ov5640_framerates[OV5640_15_FPS];
|
|
maxfps = ov5640_framerates[OV5640_60_FPS];
|
|
|
|
if (fi->numerator == 0) {
|
|
fi->denominator = maxfps;
|
|
fi->numerator = 1;
|
|
rate = OV5640_60_FPS;
|
|
goto find_mode;
|
|
}
|
|
|
|
fps = clamp_val(DIV_ROUND_CLOSEST(fi->denominator, fi->numerator),
|
|
minfps, maxfps);
|
|
|
|
best_fps = minfps;
|
|
for (i = 0; i < ARRAY_SIZE(ov5640_framerates); i++) {
|
|
int curr_fps = ov5640_framerates[i];
|
|
|
|
if (abs(curr_fps - fps) < abs(best_fps - fps)) {
|
|
best_fps = curr_fps;
|
|
rate = i;
|
|
}
|
|
}
|
|
|
|
fi->numerator = 1;
|
|
fi->denominator = best_fps;
|
|
|
|
find_mode:
|
|
mode = ov5640_find_mode(sensor, rate, width, height, false);
|
|
return mode ? rate : -EINVAL;
|
|
}
|
|
|
|
static int ov5640_get_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
struct v4l2_mbus_framefmt *fmt;
|
|
|
|
if (format->pad != 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&sensor->lock);
|
|
|
|
if (format->which == V4L2_SUBDEV_FORMAT_TRY)
|
|
fmt = v4l2_subdev_get_try_format(&sensor->sd, cfg,
|
|
format->pad);
|
|
else
|
|
fmt = &sensor->fmt;
|
|
|
|
format->format = *fmt;
|
|
|
|
mutex_unlock(&sensor->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_try_fmt_internal(struct v4l2_subdev *sd,
|
|
struct v4l2_mbus_framefmt *fmt,
|
|
enum ov5640_frame_rate fr,
|
|
const struct ov5640_mode_info **new_mode)
|
|
{
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
const struct ov5640_mode_info *mode;
|
|
int i;
|
|
|
|
mode = ov5640_find_mode(sensor, fr, fmt->width, fmt->height, true);
|
|
if (!mode)
|
|
return -EINVAL;
|
|
fmt->width = mode->hact;
|
|
fmt->height = mode->vact;
|
|
|
|
if (new_mode)
|
|
*new_mode = mode;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ov5640_formats); i++)
|
|
if (ov5640_formats[i].code == fmt->code)
|
|
break;
|
|
if (i >= ARRAY_SIZE(ov5640_formats))
|
|
i = 0;
|
|
|
|
fmt->code = ov5640_formats[i].code;
|
|
fmt->colorspace = ov5640_formats[i].colorspace;
|
|
fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
|
|
fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
|
|
fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_set_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
const struct ov5640_mode_info *new_mode;
|
|
struct v4l2_mbus_framefmt *mbus_fmt = &format->format;
|
|
struct v4l2_mbus_framefmt *fmt;
|
|
int ret;
|
|
|
|
if (format->pad != 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&sensor->lock);
|
|
|
|
if (sensor->streaming) {
|
|
ret = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
ret = ov5640_try_fmt_internal(sd, mbus_fmt,
|
|
sensor->current_fr, &new_mode);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (format->which == V4L2_SUBDEV_FORMAT_TRY)
|
|
fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
|
|
else
|
|
fmt = &sensor->fmt;
|
|
|
|
*fmt = *mbus_fmt;
|
|
|
|
if (new_mode != sensor->current_mode) {
|
|
sensor->current_mode = new_mode;
|
|
sensor->pending_mode_change = true;
|
|
}
|
|
if (mbus_fmt->code != sensor->fmt.code)
|
|
sensor->pending_fmt_change = true;
|
|
|
|
out:
|
|
mutex_unlock(&sensor->lock);
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_set_framefmt(struct ov5640_dev *sensor,
|
|
struct v4l2_mbus_framefmt *format)
|
|
{
|
|
int ret = 0;
|
|
bool is_rgb = false;
|
|
bool is_jpeg = false;
|
|
u8 val;
|
|
|
|
switch (format->code) {
|
|
case MEDIA_BUS_FMT_UYVY8_2X8:
|
|
/* YUV422, UYVY */
|
|
val = 0x3f;
|
|
break;
|
|
case MEDIA_BUS_FMT_YUYV8_2X8:
|
|
/* YUV422, YUYV */
|
|
val = 0x30;
|
|
break;
|
|
case MEDIA_BUS_FMT_RGB565_2X8_LE:
|
|
/* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */
|
|
val = 0x6F;
|
|
is_rgb = true;
|
|
break;
|
|
case MEDIA_BUS_FMT_RGB565_2X8_BE:
|
|
/* RGB565 {r[4:0],g[5:3]},{g[2:0],b[4:0]} */
|
|
val = 0x61;
|
|
is_rgb = true;
|
|
break;
|
|
case MEDIA_BUS_FMT_JPEG_1X8:
|
|
/* YUV422, YUYV */
|
|
val = 0x30;
|
|
is_jpeg = true;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* FORMAT CONTROL00: YUV and RGB formatting */
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_FORMAT_CONTROL00, val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* FORMAT MUX CONTROL: ISP YUV or RGB */
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_ISP_FORMAT_MUX_CTRL,
|
|
is_rgb ? 0x01 : 0x00);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* TIMING TC REG21:
|
|
* - [5]: JPEG enable
|
|
*/
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
|
|
BIT(5), is_jpeg ? BIT(5) : 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* SYSTEM RESET02:
|
|
* - [4]: Reset JFIFO
|
|
* - [3]: Reset SFIFO
|
|
* - [2]: Reset JPEG
|
|
*/
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_RESET02,
|
|
BIT(4) | BIT(3) | BIT(2),
|
|
is_jpeg ? 0 : (BIT(4) | BIT(3) | BIT(2)));
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* CLOCK ENABLE02:
|
|
* - [5]: Enable JPEG 2x clock
|
|
* - [3]: Enable JPEG clock
|
|
*/
|
|
return ov5640_mod_reg(sensor, OV5640_REG_SYS_CLOCK_ENABLE02,
|
|
BIT(5) | BIT(3),
|
|
is_jpeg ? (BIT(5) | BIT(3)) : 0);
|
|
}
|
|
|
|
/*
|
|
* Sensor Controls.
|
|
*/
|
|
|
|
static int ov5640_set_ctrl_hue(struct ov5640_dev *sensor, int value)
|
|
{
|
|
int ret;
|
|
|
|
if (value) {
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
|
|
BIT(0), BIT(0));
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg16(sensor, OV5640_REG_SDE_CTRL1, value);
|
|
} else {
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(0), 0);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_set_ctrl_contrast(struct ov5640_dev *sensor, int value)
|
|
{
|
|
int ret;
|
|
|
|
if (value) {
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
|
|
BIT(2), BIT(2));
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL5,
|
|
value & 0xff);
|
|
} else {
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(2), 0);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_set_ctrl_saturation(struct ov5640_dev *sensor, int value)
|
|
{
|
|
int ret;
|
|
|
|
if (value) {
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
|
|
BIT(1), BIT(1));
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL3,
|
|
value & 0xff);
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL4,
|
|
value & 0xff);
|
|
} else {
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(1), 0);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_set_ctrl_white_balance(struct ov5640_dev *sensor, int awb)
|
|
{
|
|
int ret;
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_AWB_MANUAL_CTRL,
|
|
BIT(0), awb ? 0 : 1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!awb) {
|
|
u16 red = (u16)sensor->ctrls.red_balance->val;
|
|
u16 blue = (u16)sensor->ctrls.blue_balance->val;
|
|
|
|
ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_R_GAIN, red);
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_B_GAIN, blue);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_set_ctrl_exposure(struct ov5640_dev *sensor,
|
|
enum v4l2_exposure_auto_type auto_exposure)
|
|
{
|
|
struct ov5640_ctrls *ctrls = &sensor->ctrls;
|
|
bool auto_exp = (auto_exposure == V4L2_EXPOSURE_AUTO);
|
|
int ret = 0;
|
|
|
|
if (ctrls->auto_exp->is_new) {
|
|
ret = ov5640_set_autoexposure(sensor, auto_exp);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (!auto_exp && ctrls->exposure->is_new) {
|
|
u16 max_exp;
|
|
|
|
ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_VTS,
|
|
&max_exp);
|
|
if (ret)
|
|
return ret;
|
|
ret = ov5640_get_vts(sensor);
|
|
if (ret < 0)
|
|
return ret;
|
|
max_exp += ret;
|
|
ret = 0;
|
|
|
|
if (ctrls->exposure->val < max_exp)
|
|
ret = ov5640_set_exposure(sensor, ctrls->exposure->val);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_set_ctrl_gain(struct ov5640_dev *sensor, bool auto_gain)
|
|
{
|
|
struct ov5640_ctrls *ctrls = &sensor->ctrls;
|
|
int ret = 0;
|
|
|
|
if (ctrls->auto_gain->is_new) {
|
|
ret = ov5640_set_autogain(sensor, auto_gain);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (!auto_gain && ctrls->gain->is_new)
|
|
ret = ov5640_set_gain(sensor, ctrls->gain->val);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_set_ctrl_test_pattern(struct ov5640_dev *sensor, int value)
|
|
{
|
|
return ov5640_mod_reg(sensor, OV5640_REG_PRE_ISP_TEST_SET1,
|
|
0xa4, value ? 0xa4 : 0);
|
|
}
|
|
|
|
static int ov5640_set_ctrl_light_freq(struct ov5640_dev *sensor, int value)
|
|
{
|
|
int ret;
|
|
|
|
ret = ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL01, BIT(7),
|
|
(value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) ?
|
|
0 : BIT(7));
|
|
if (ret)
|
|
return ret;
|
|
|
|
return ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL00, BIT(2),
|
|
(value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) ?
|
|
BIT(2) : 0);
|
|
}
|
|
|
|
static int ov5640_set_ctrl_hflip(struct ov5640_dev *sensor, int value)
|
|
{
|
|
/*
|
|
* If sensor is mounted upside down, mirror logic is inversed.
|
|
*
|
|
* Sensor is a BSI (Back Side Illuminated) one,
|
|
* so image captured is physically mirrored.
|
|
* This is why mirror logic is inversed in
|
|
* order to cancel this mirror effect.
|
|
*/
|
|
|
|
/*
|
|
* TIMING TC REG21:
|
|
* - [2]: ISP mirror
|
|
* - [1]: Sensor mirror
|
|
*/
|
|
return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
|
|
BIT(2) | BIT(1),
|
|
(!(value ^ sensor->upside_down)) ?
|
|
(BIT(2) | BIT(1)) : 0);
|
|
}
|
|
|
|
static int ov5640_set_ctrl_vflip(struct ov5640_dev *sensor, int value)
|
|
{
|
|
/* If sensor is mounted upside down, flip logic is inversed */
|
|
|
|
/*
|
|
* TIMING TC REG20:
|
|
* - [2]: ISP vflip
|
|
* - [1]: Sensor vflip
|
|
*/
|
|
return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
|
|
BIT(2) | BIT(1),
|
|
(value ^ sensor->upside_down) ?
|
|
(BIT(2) | BIT(1)) : 0);
|
|
}
|
|
|
|
static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
int val;
|
|
|
|
/* v4l2_ctrl_lock() locks our own mutex */
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUTOGAIN:
|
|
val = ov5640_get_gain(sensor);
|
|
if (val < 0)
|
|
return val;
|
|
sensor->ctrls.gain->val = val;
|
|
break;
|
|
case V4L2_CID_EXPOSURE_AUTO:
|
|
val = ov5640_get_exposure(sensor);
|
|
if (val < 0)
|
|
return val;
|
|
sensor->ctrls.exposure->val = val;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
int ret;
|
|
|
|
/* v4l2_ctrl_lock() locks our own mutex */
|
|
|
|
/*
|
|
* If the device is not powered up by the host driver do
|
|
* not apply any controls to H/W at this time. Instead
|
|
* the controls will be restored right after power-up.
|
|
*/
|
|
if (sensor->power_count == 0)
|
|
return 0;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUTOGAIN:
|
|
ret = ov5640_set_ctrl_gain(sensor, ctrl->val);
|
|
break;
|
|
case V4L2_CID_EXPOSURE_AUTO:
|
|
ret = ov5640_set_ctrl_exposure(sensor, ctrl->val);
|
|
break;
|
|
case V4L2_CID_AUTO_WHITE_BALANCE:
|
|
ret = ov5640_set_ctrl_white_balance(sensor, ctrl->val);
|
|
break;
|
|
case V4L2_CID_HUE:
|
|
ret = ov5640_set_ctrl_hue(sensor, ctrl->val);
|
|
break;
|
|
case V4L2_CID_CONTRAST:
|
|
ret = ov5640_set_ctrl_contrast(sensor, ctrl->val);
|
|
break;
|
|
case V4L2_CID_SATURATION:
|
|
ret = ov5640_set_ctrl_saturation(sensor, ctrl->val);
|
|
break;
|
|
case V4L2_CID_TEST_PATTERN:
|
|
ret = ov5640_set_ctrl_test_pattern(sensor, ctrl->val);
|
|
break;
|
|
case V4L2_CID_POWER_LINE_FREQUENCY:
|
|
ret = ov5640_set_ctrl_light_freq(sensor, ctrl->val);
|
|
break;
|
|
case V4L2_CID_HFLIP:
|
|
ret = ov5640_set_ctrl_hflip(sensor, ctrl->val);
|
|
break;
|
|
case V4L2_CID_VFLIP:
|
|
ret = ov5640_set_ctrl_vflip(sensor, ctrl->val);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct v4l2_ctrl_ops ov5640_ctrl_ops = {
|
|
.g_volatile_ctrl = ov5640_g_volatile_ctrl,
|
|
.s_ctrl = ov5640_s_ctrl,
|
|
};
|
|
|
|
static const char * const test_pattern_menu[] = {
|
|
"Disabled",
|
|
"Color bars",
|
|
};
|
|
|
|
static int ov5640_init_controls(struct ov5640_dev *sensor)
|
|
{
|
|
const struct v4l2_ctrl_ops *ops = &ov5640_ctrl_ops;
|
|
struct ov5640_ctrls *ctrls = &sensor->ctrls;
|
|
struct v4l2_ctrl_handler *hdl = &ctrls->handler;
|
|
int ret;
|
|
|
|
v4l2_ctrl_handler_init(hdl, 32);
|
|
|
|
/* we can use our own mutex for the ctrl lock */
|
|
hdl->lock = &sensor->lock;
|
|
|
|
/* Auto/manual white balance */
|
|
ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops,
|
|
V4L2_CID_AUTO_WHITE_BALANCE,
|
|
0, 1, 1, 1);
|
|
ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE,
|
|
0, 4095, 1, 0);
|
|
ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE,
|
|
0, 4095, 1, 0);
|
|
/* Auto/manual exposure */
|
|
ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
|
|
V4L2_CID_EXPOSURE_AUTO,
|
|
V4L2_EXPOSURE_MANUAL, 0,
|
|
V4L2_EXPOSURE_AUTO);
|
|
ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
|
|
0, 65535, 1, 0);
|
|
/* Auto/manual gain */
|
|
ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN,
|
|
0, 1, 1, 1);
|
|
ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN,
|
|
0, 1023, 1, 0);
|
|
|
|
ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION,
|
|
0, 255, 1, 64);
|
|
ctrls->hue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HUE,
|
|
0, 359, 1, 0);
|
|
ctrls->contrast = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST,
|
|
0, 255, 1, 0);
|
|
ctrls->test_pattern =
|
|
v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
|
|
ARRAY_SIZE(test_pattern_menu) - 1,
|
|
0, 0, test_pattern_menu);
|
|
ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
|
|
0, 1, 1, 0);
|
|
ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
|
|
0, 1, 1, 0);
|
|
|
|
ctrls->light_freq =
|
|
v4l2_ctrl_new_std_menu(hdl, ops,
|
|
V4L2_CID_POWER_LINE_FREQUENCY,
|
|
V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
|
|
V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
|
|
|
|
if (hdl->error) {
|
|
ret = hdl->error;
|
|
goto free_ctrls;
|
|
}
|
|
|
|
ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
|
|
ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
|
|
|
|
v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false);
|
|
v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
|
|
v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true);
|
|
|
|
sensor->sd.ctrl_handler = hdl;
|
|
return 0;
|
|
|
|
free_ctrls:
|
|
v4l2_ctrl_handler_free(hdl);
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_enum_frame_size(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_frame_size_enum *fse)
|
|
{
|
|
if (fse->pad != 0)
|
|
return -EINVAL;
|
|
if (fse->index >= OV5640_NUM_MODES)
|
|
return -EINVAL;
|
|
|
|
fse->min_width =
|
|
ov5640_mode_data[fse->index].hact;
|
|
fse->max_width = fse->min_width;
|
|
fse->min_height =
|
|
ov5640_mode_data[fse->index].vact;
|
|
fse->max_height = fse->min_height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_enum_frame_interval(
|
|
struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_frame_interval_enum *fie)
|
|
{
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
struct v4l2_fract tpf;
|
|
int ret;
|
|
|
|
if (fie->pad != 0)
|
|
return -EINVAL;
|
|
if (fie->index >= OV5640_NUM_FRAMERATES)
|
|
return -EINVAL;
|
|
|
|
tpf.numerator = 1;
|
|
tpf.denominator = ov5640_framerates[fie->index];
|
|
|
|
ret = ov5640_try_frame_interval(sensor, &tpf,
|
|
fie->width, fie->height);
|
|
if (ret < 0)
|
|
return -EINVAL;
|
|
|
|
fie->interval = tpf;
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_g_frame_interval(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_frame_interval *fi)
|
|
{
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
|
|
mutex_lock(&sensor->lock);
|
|
fi->interval = sensor->frame_interval;
|
|
mutex_unlock(&sensor->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_s_frame_interval(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_frame_interval *fi)
|
|
{
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
const struct ov5640_mode_info *mode;
|
|
int frame_rate, ret = 0;
|
|
|
|
if (fi->pad != 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&sensor->lock);
|
|
|
|
if (sensor->streaming) {
|
|
ret = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
mode = sensor->current_mode;
|
|
|
|
frame_rate = ov5640_try_frame_interval(sensor, &fi->interval,
|
|
mode->hact, mode->vact);
|
|
if (frame_rate < 0) {
|
|
/* Always return a valid frame interval value */
|
|
fi->interval = sensor->frame_interval;
|
|
goto out;
|
|
}
|
|
|
|
mode = ov5640_find_mode(sensor, frame_rate, mode->hact,
|
|
mode->vact, true);
|
|
if (!mode) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (mode != sensor->current_mode ||
|
|
frame_rate != sensor->current_fr) {
|
|
sensor->current_fr = frame_rate;
|
|
sensor->frame_interval = fi->interval;
|
|
sensor->current_mode = mode;
|
|
sensor->pending_mode_change = true;
|
|
}
|
|
out:
|
|
mutex_unlock(&sensor->lock);
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_enum_mbus_code(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
if (code->pad != 0)
|
|
return -EINVAL;
|
|
if (code->index >= ARRAY_SIZE(ov5640_formats))
|
|
return -EINVAL;
|
|
|
|
code->code = ov5640_formats[code->index].code;
|
|
return 0;
|
|
}
|
|
|
|
static int ov5640_s_stream(struct v4l2_subdev *sd, int enable)
|
|
{
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
int ret = 0;
|
|
|
|
mutex_lock(&sensor->lock);
|
|
|
|
if (sensor->streaming == !enable) {
|
|
if (enable && sensor->pending_mode_change) {
|
|
ret = ov5640_set_mode(sensor);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
if (enable && sensor->pending_fmt_change) {
|
|
ret = ov5640_set_framefmt(sensor, &sensor->fmt);
|
|
if (ret)
|
|
goto out;
|
|
sensor->pending_fmt_change = false;
|
|
}
|
|
|
|
if (sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY)
|
|
ret = ov5640_set_stream_mipi(sensor, enable);
|
|
else
|
|
ret = ov5640_set_stream_dvp(sensor, enable);
|
|
|
|
if (!ret)
|
|
sensor->streaming = enable;
|
|
}
|
|
out:
|
|
mutex_unlock(&sensor->lock);
|
|
return ret;
|
|
}
|
|
|
|
static const struct v4l2_subdev_core_ops ov5640_core_ops = {
|
|
.s_power = ov5640_s_power,
|
|
.log_status = v4l2_ctrl_subdev_log_status,
|
|
.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
|
|
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops ov5640_video_ops = {
|
|
.g_frame_interval = ov5640_g_frame_interval,
|
|
.s_frame_interval = ov5640_s_frame_interval,
|
|
.s_stream = ov5640_s_stream,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops ov5640_pad_ops = {
|
|
.enum_mbus_code = ov5640_enum_mbus_code,
|
|
.get_fmt = ov5640_get_fmt,
|
|
.set_fmt = ov5640_set_fmt,
|
|
.enum_frame_size = ov5640_enum_frame_size,
|
|
.enum_frame_interval = ov5640_enum_frame_interval,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops ov5640_subdev_ops = {
|
|
.core = &ov5640_core_ops,
|
|
.video = &ov5640_video_ops,
|
|
.pad = &ov5640_pad_ops,
|
|
};
|
|
|
|
static int ov5640_get_regulators(struct ov5640_dev *sensor)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < OV5640_NUM_SUPPLIES; i++)
|
|
sensor->supplies[i].supply = ov5640_supply_name[i];
|
|
|
|
return devm_regulator_bulk_get(&sensor->i2c_client->dev,
|
|
OV5640_NUM_SUPPLIES,
|
|
sensor->supplies);
|
|
}
|
|
|
|
static int ov5640_check_chip_id(struct ov5640_dev *sensor)
|
|
{
|
|
struct i2c_client *client = sensor->i2c_client;
|
|
int ret = 0;
|
|
u16 chip_id;
|
|
|
|
ret = ov5640_set_power_on(sensor);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ov5640_read_reg16(sensor, OV5640_REG_CHIP_ID, &chip_id);
|
|
if (ret) {
|
|
dev_err(&client->dev, "%s: failed to read chip identifier\n",
|
|
__func__);
|
|
goto power_off;
|
|
}
|
|
|
|
if (chip_id != 0x5640) {
|
|
dev_err(&client->dev, "%s: wrong chip identifier, expected 0x5640, got 0x%x\n",
|
|
__func__, chip_id);
|
|
ret = -ENXIO;
|
|
}
|
|
|
|
power_off:
|
|
ov5640_set_power_off(sensor);
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct fwnode_handle *endpoint;
|
|
struct ov5640_dev *sensor;
|
|
struct v4l2_mbus_framefmt *fmt;
|
|
u32 rotation;
|
|
int ret;
|
|
|
|
sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
|
|
if (!sensor)
|
|
return -ENOMEM;
|
|
|
|
sensor->i2c_client = client;
|
|
|
|
/*
|
|
* default init sequence initialize sensor to
|
|
* YUV422 UYVY VGA@30fps
|
|
*/
|
|
fmt = &sensor->fmt;
|
|
fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
|
|
fmt->colorspace = V4L2_COLORSPACE_SRGB;
|
|
fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
|
|
fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
|
|
fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
|
|
fmt->width = 640;
|
|
fmt->height = 480;
|
|
fmt->field = V4L2_FIELD_NONE;
|
|
sensor->frame_interval.numerator = 1;
|
|
sensor->frame_interval.denominator = ov5640_framerates[OV5640_30_FPS];
|
|
sensor->current_fr = OV5640_30_FPS;
|
|
sensor->current_mode =
|
|
&ov5640_mode_data[OV5640_MODE_VGA_640_480];
|
|
sensor->last_mode = sensor->current_mode;
|
|
|
|
sensor->ae_target = 52;
|
|
|
|
/* optional indication of physical rotation of sensor */
|
|
ret = fwnode_property_read_u32(dev_fwnode(&client->dev), "rotation",
|
|
&rotation);
|
|
if (!ret) {
|
|
switch (rotation) {
|
|
case 180:
|
|
sensor->upside_down = true;
|
|
/* fall through */
|
|
case 0:
|
|
break;
|
|
default:
|
|
dev_warn(dev, "%u degrees rotation is not supported, ignoring...\n",
|
|
rotation);
|
|
}
|
|
}
|
|
|
|
endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev),
|
|
NULL);
|
|
if (!endpoint) {
|
|
dev_err(dev, "endpoint node not found\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = v4l2_fwnode_endpoint_parse(endpoint, &sensor->ep);
|
|
fwnode_handle_put(endpoint);
|
|
if (ret) {
|
|
dev_err(dev, "Could not parse endpoint\n");
|
|
return ret;
|
|
}
|
|
|
|
/* get system clock (xclk) */
|
|
sensor->xclk = devm_clk_get(dev, "xclk");
|
|
if (IS_ERR(sensor->xclk)) {
|
|
dev_err(dev, "failed to get xclk\n");
|
|
return PTR_ERR(sensor->xclk);
|
|
}
|
|
|
|
sensor->xclk_freq = clk_get_rate(sensor->xclk);
|
|
if (sensor->xclk_freq < OV5640_XCLK_MIN ||
|
|
sensor->xclk_freq > OV5640_XCLK_MAX) {
|
|
dev_err(dev, "xclk frequency out of range: %d Hz\n",
|
|
sensor->xclk_freq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* request optional power down pin */
|
|
sensor->pwdn_gpio = devm_gpiod_get_optional(dev, "powerdown",
|
|
GPIOD_OUT_HIGH);
|
|
/* request optional reset pin */
|
|
sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
|
|
GPIOD_OUT_HIGH);
|
|
|
|
v4l2_i2c_subdev_init(&sensor->sd, client, &ov5640_subdev_ops);
|
|
|
|
sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
|
|
V4L2_SUBDEV_FL_HAS_EVENTS;
|
|
sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
|
|
ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ov5640_get_regulators(sensor);
|
|
if (ret)
|
|
return ret;
|
|
|
|
mutex_init(&sensor->lock);
|
|
|
|
ret = ov5640_check_chip_id(sensor);
|
|
if (ret)
|
|
goto entity_cleanup;
|
|
|
|
ret = ov5640_init_controls(sensor);
|
|
if (ret)
|
|
goto entity_cleanup;
|
|
|
|
ret = v4l2_async_register_subdev(&sensor->sd);
|
|
if (ret)
|
|
goto free_ctrls;
|
|
|
|
return 0;
|
|
|
|
free_ctrls:
|
|
v4l2_ctrl_handler_free(&sensor->ctrls.handler);
|
|
entity_cleanup:
|
|
mutex_destroy(&sensor->lock);
|
|
media_entity_cleanup(&sensor->sd.entity);
|
|
return ret;
|
|
}
|
|
|
|
static int ov5640_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct ov5640_dev *sensor = to_ov5640_dev(sd);
|
|
|
|
v4l2_async_unregister_subdev(&sensor->sd);
|
|
mutex_destroy(&sensor->lock);
|
|
media_entity_cleanup(&sensor->sd.entity);
|
|
v4l2_ctrl_handler_free(&sensor->ctrls.handler);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id ov5640_id[] = {
|
|
{"ov5640", 0},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, ov5640_id);
|
|
|
|
static const struct of_device_id ov5640_dt_ids[] = {
|
|
{ .compatible = "ovti,ov5640" },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, ov5640_dt_ids);
|
|
|
|
static struct i2c_driver ov5640_i2c_driver = {
|
|
.driver = {
|
|
.name = "ov5640",
|
|
.of_match_table = ov5640_dt_ids,
|
|
},
|
|
.id_table = ov5640_id,
|
|
.probe = ov5640_probe,
|
|
.remove = ov5640_remove,
|
|
};
|
|
|
|
module_i2c_driver(ov5640_i2c_driver);
|
|
|
|
MODULE_DESCRIPTION("OV5640 MIPI Camera Subdev Driver");
|
|
MODULE_LICENSE("GPL");
|