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linux/drivers/media/i2c/ov2659.c
Grygorii Strashko 2e490139b1 [media] media: i2c: ov2659: speedup probe if no device connected 
The ov2659 driver performs device detection and initialization in the
following way:
 - send reset command REG_SOFTWARE_RESET
 - load array of predefined register's setting (~150 values)
 - read device version REG_SC_CHIP_ID_H/REG_SC_CHIP_ID_L
 - check version and exit if invalid.

As result, for not connected device there will be >~150 i2c transactions
executed before device version checking and exit (there are no
failures detected because ov2659 declared as I2C_CLIENT_SCCB and NACKs
are ignored in this case).

Let's fix that by checking the chip version first and start
initialization only if it's supported.

Cc: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2016-01-25 15:15:37 -02:00

1528 lines
36 KiB
C
Raw Blame History

/*
* Omnivision OV2659 CMOS Image Sensor driver
*
* Copyright (C) 2015 Texas Instruments, Inc.
*
* Benoit Parrot <bparrot@ti.com>
* Lad, Prabhakar <prabhakar.csengg@gmail.com>
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/media.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/videodev2.h>
#include <media/media-entity.h>
#include <media/i2c/ov2659.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-image-sizes.h>
#include <media/v4l2-mediabus.h>
#include <media/v4l2-of.h>
#include <media/v4l2-subdev.h>
#define DRIVER_NAME "ov2659"
/*
* OV2659 register definitions
*/
#define REG_SOFTWARE_STANDBY 0x0100
#define REG_SOFTWARE_RESET 0x0103
#define REG_IO_CTRL00 0x3000
#define REG_IO_CTRL01 0x3001
#define REG_IO_CTRL02 0x3002
#define REG_OUTPUT_VALUE00 0x3008
#define REG_OUTPUT_VALUE01 0x3009
#define REG_OUTPUT_VALUE02 0x300d
#define REG_OUTPUT_SELECT00 0x300e
#define REG_OUTPUT_SELECT01 0x300f
#define REG_OUTPUT_SELECT02 0x3010
#define REG_OUTPUT_DRIVE 0x3011
#define REG_INPUT_READOUT00 0x302d
#define REG_INPUT_READOUT01 0x302e
#define REG_INPUT_READOUT02 0x302f
#define REG_SC_PLL_CTRL0 0x3003
#define REG_SC_PLL_CTRL1 0x3004
#define REG_SC_PLL_CTRL2 0x3005
#define REG_SC_PLL_CTRL3 0x3006
#define REG_SC_CHIP_ID_H 0x300a
#define REG_SC_CHIP_ID_L 0x300b
#define REG_SC_PWC 0x3014
#define REG_SC_CLKRST0 0x301a
#define REG_SC_CLKRST1 0x301b
#define REG_SC_CLKRST2 0x301c
#define REG_SC_CLKRST3 0x301d
#define REG_SC_SUB_ID 0x302a
#define REG_SC_SCCB_ID 0x302b
#define REG_GROUP_ADDRESS_00 0x3200
#define REG_GROUP_ADDRESS_01 0x3201
#define REG_GROUP_ADDRESS_02 0x3202
#define REG_GROUP_ADDRESS_03 0x3203
#define REG_GROUP_ACCESS 0x3208
#define REG_AWB_R_GAIN_H 0x3400
#define REG_AWB_R_GAIN_L 0x3401
#define REG_AWB_G_GAIN_H 0x3402
#define REG_AWB_G_GAIN_L 0x3403
#define REG_AWB_B_GAIN_H 0x3404
#define REG_AWB_B_GAIN_L 0x3405
#define REG_AWB_MANUAL_CONTROL 0x3406
#define REG_TIMING_HS_H 0x3800
#define REG_TIMING_HS_L 0x3801
#define REG_TIMING_VS_H 0x3802
#define REG_TIMING_VS_L 0x3803
#define REG_TIMING_HW_H 0x3804
#define REG_TIMING_HW_L 0x3805
#define REG_TIMING_VH_H 0x3806
#define REG_TIMING_VH_L 0x3807
#define REG_TIMING_DVPHO_H 0x3808
#define REG_TIMING_DVPHO_L 0x3809
#define REG_TIMING_DVPVO_H 0x380a
#define REG_TIMING_DVPVO_L 0x380b
#define REG_TIMING_HTS_H 0x380c
#define REG_TIMING_HTS_L 0x380d
#define REG_TIMING_VTS_H 0x380e
#define REG_TIMING_VTS_L 0x380f
#define REG_TIMING_HOFFS_H 0x3810
#define REG_TIMING_HOFFS_L 0x3811
#define REG_TIMING_VOFFS_H 0x3812
#define REG_TIMING_VOFFS_L 0x3813
#define REG_TIMING_XINC 0x3814
#define REG_TIMING_YINC 0x3815
#define REG_TIMING_VERT_FORMAT 0x3820
#define REG_TIMING_HORIZ_FORMAT 0x3821
#define REG_FORMAT_CTRL00 0x4300
#define REG_VFIFO_READ_START_H 0x4608
#define REG_VFIFO_READ_START_L 0x4609
#define REG_DVP_CTRL02 0x4708
#define REG_ISP_CTRL00 0x5000
#define REG_ISP_CTRL01 0x5001
#define REG_ISP_CTRL02 0x5002
#define REG_LENC_RED_X0_H 0x500c
#define REG_LENC_RED_X0_L 0x500d
#define REG_LENC_RED_Y0_H 0x500e
#define REG_LENC_RED_Y0_L 0x500f
#define REG_LENC_RED_A1 0x5010
#define REG_LENC_RED_B1 0x5011
#define REG_LENC_RED_A2_B2 0x5012
#define REG_LENC_GREEN_X0_H 0x5013
#define REG_LENC_GREEN_X0_L 0x5014
#define REG_LENC_GREEN_Y0_H 0x5015
#define REG_LENC_GREEN_Y0_L 0x5016
#define REG_LENC_GREEN_A1 0x5017
#define REG_LENC_GREEN_B1 0x5018
#define REG_LENC_GREEN_A2_B2 0x5019
#define REG_LENC_BLUE_X0_H 0x501a
#define REG_LENC_BLUE_X0_L 0x501b
#define REG_LENC_BLUE_Y0_H 0x501c
#define REG_LENC_BLUE_Y0_L 0x501d
#define REG_LENC_BLUE_A1 0x501e
#define REG_LENC_BLUE_B1 0x501f
#define REG_LENC_BLUE_A2_B2 0x5020
#define REG_AWB_CTRL00 0x5035
#define REG_AWB_CTRL01 0x5036
#define REG_AWB_CTRL02 0x5037
#define REG_AWB_CTRL03 0x5038
#define REG_AWB_CTRL04 0x5039
#define REG_AWB_LOCAL_LIMIT 0x503a
#define REG_AWB_CTRL12 0x5049
#define REG_AWB_CTRL13 0x504a
#define REG_AWB_CTRL14 0x504b
#define REG_SHARPENMT_THRESH1 0x5064
#define REG_SHARPENMT_THRESH2 0x5065
#define REG_SHARPENMT_OFFSET1 0x5066
#define REG_SHARPENMT_OFFSET2 0x5067
#define REG_DENOISE_THRESH1 0x5068
#define REG_DENOISE_THRESH2 0x5069
#define REG_DENOISE_OFFSET1 0x506a
#define REG_DENOISE_OFFSET2 0x506b
#define REG_SHARPEN_THRESH1 0x506c
#define REG_SHARPEN_THRESH2 0x506d
#define REG_CIP_CTRL00 0x506e
#define REG_CIP_CTRL01 0x506f
#define REG_CMX_SIGN 0x5079
#define REG_CMX_MISC_CTRL 0x507a
#define REG_PRE_ISP_CTRL00 0x50a0
#define TEST_PATTERN_ENABLE BIT(7)
#define VERTICAL_COLOR_BAR_MASK 0x53
#define REG_NULL 0x0000 /* Array end token */
#define OV265X_ID(_msb, _lsb) ((_msb) << 8 | (_lsb))
#define OV2659_ID 0x2656
struct sensor_register {
u16 addr;
u8 value;
};
struct ov2659_framesize {
u16 width;
u16 height;
u16 max_exp_lines;
const struct sensor_register *regs;
};
struct ov2659_pll_ctrl {
u8 ctrl1;
u8 ctrl2;
u8 ctrl3;
};
struct ov2659_pixfmt {
u32 code;
/* Output format Register Value (REG_FORMAT_CTRL00) */
struct sensor_register *format_ctrl_regs;
};
struct pll_ctrl_reg {
unsigned int div;
unsigned char reg;
};
struct ov2659 {
struct v4l2_subdev sd;
struct media_pad pad;
struct v4l2_mbus_framefmt format;
unsigned int xvclk_frequency;
const struct ov2659_platform_data *pdata;
struct mutex lock;
struct i2c_client *client;
struct v4l2_ctrl_handler ctrls;
struct v4l2_ctrl *link_frequency;
const struct ov2659_framesize *frame_size;
struct sensor_register *format_ctrl_regs;
struct ov2659_pll_ctrl pll;
int streaming;
};
static const struct sensor_register ov2659_init_regs[] = {
{ REG_IO_CTRL00, 0x03 },
{ REG_IO_CTRL01, 0xff },
{ REG_IO_CTRL02, 0xe0 },
{ 0x3633, 0x3d },
{ 0x3620, 0x02 },
{ 0x3631, 0x11 },
{ 0x3612, 0x04 },
{ 0x3630, 0x20 },
{ 0x4702, 0x02 },
{ 0x370c, 0x34 },
{ REG_TIMING_HS_H, 0x00 },
{ REG_TIMING_HS_L, 0x00 },
{ REG_TIMING_VS_H, 0x00 },
{ REG_TIMING_VS_L, 0x00 },
{ REG_TIMING_HW_H, 0x06 },
{ REG_TIMING_HW_L, 0x5f },
{ REG_TIMING_VH_H, 0x04 },
{ REG_TIMING_VH_L, 0xb7 },
{ REG_TIMING_DVPHO_H, 0x03 },
{ REG_TIMING_DVPHO_L, 0x20 },
{ REG_TIMING_DVPVO_H, 0x02 },
{ REG_TIMING_DVPVO_L, 0x58 },
{ REG_TIMING_HTS_H, 0x05 },
{ REG_TIMING_HTS_L, 0x14 },
{ REG_TIMING_VTS_H, 0x02 },
{ REG_TIMING_VTS_L, 0x68 },
{ REG_TIMING_HOFFS_L, 0x08 },
{ REG_TIMING_VOFFS_L, 0x02 },
{ REG_TIMING_XINC, 0x31 },
{ REG_TIMING_YINC, 0x31 },
{ 0x3a02, 0x02 },
{ 0x3a03, 0x68 },
{ 0x3a08, 0x00 },
{ 0x3a09, 0x5c },
{ 0x3a0a, 0x00 },
{ 0x3a0b, 0x4d },
{ 0x3a0d, 0x08 },
{ 0x3a0e, 0x06 },
{ 0x3a14, 0x02 },
{ 0x3a15, 0x28 },
{ REG_DVP_CTRL02, 0x01 },
{ 0x3623, 0x00 },
{ 0x3634, 0x76 },
{ 0x3701, 0x44 },
{ 0x3702, 0x18 },
{ 0x3703, 0x24 },
{ 0x3704, 0x24 },
{ 0x3705, 0x0c },
{ REG_TIMING_VERT_FORMAT, 0x81 },
{ REG_TIMING_HORIZ_FORMAT, 0x01 },
{ 0x370a, 0x52 },
{ REG_VFIFO_READ_START_H, 0x00 },
{ REG_VFIFO_READ_START_L, 0x80 },
{ REG_FORMAT_CTRL00, 0x30 },
{ 0x5086, 0x02 },
{ REG_ISP_CTRL00, 0xfb },
{ REG_ISP_CTRL01, 0x1f },
{ REG_ISP_CTRL02, 0x00 },
{ 0x5025, 0x0e },
{ 0x5026, 0x18 },
{ 0x5027, 0x34 },
{ 0x5028, 0x4c },
{ 0x5029, 0x62 },
{ 0x502a, 0x74 },
{ 0x502b, 0x85 },
{ 0x502c, 0x92 },
{ 0x502d, 0x9e },
{ 0x502e, 0xb2 },
{ 0x502f, 0xc0 },
{ 0x5030, 0xcc },
{ 0x5031, 0xe0 },
{ 0x5032, 0xee },
{ 0x5033, 0xf6 },
{ 0x5034, 0x11 },
{ 0x5070, 0x1c },
{ 0x5071, 0x5b },
{ 0x5072, 0x05 },
{ 0x5073, 0x20 },
{ 0x5074, 0x94 },
{ 0x5075, 0xb4 },
{ 0x5076, 0xb4 },
{ 0x5077, 0xaf },
{ 0x5078, 0x05 },
{ REG_CMX_SIGN, 0x98 },
{ REG_CMX_MISC_CTRL, 0x21 },
{ REG_AWB_CTRL00, 0x6a },
{ REG_AWB_CTRL01, 0x11 },
{ REG_AWB_CTRL02, 0x92 },
{ REG_AWB_CTRL03, 0x21 },
{ REG_AWB_CTRL04, 0xe1 },
{ REG_AWB_LOCAL_LIMIT, 0x01 },
{ 0x503c, 0x05 },
{ 0x503d, 0x08 },
{ 0x503e, 0x08 },
{ 0x503f, 0x64 },
{ 0x5040, 0x58 },
{ 0x5041, 0x2a },
{ 0x5042, 0xc5 },
{ 0x5043, 0x2e },
{ 0x5044, 0x3a },
{ 0x5045, 0x3c },
{ 0x5046, 0x44 },
{ 0x5047, 0xf8 },
{ 0x5048, 0x08 },
{ REG_AWB_CTRL12, 0x70 },
{ REG_AWB_CTRL13, 0xf0 },
{ REG_AWB_CTRL14, 0xf0 },
{ REG_LENC_RED_X0_H, 0x03 },
{ REG_LENC_RED_X0_L, 0x20 },
{ REG_LENC_RED_Y0_H, 0x02 },
{ REG_LENC_RED_Y0_L, 0x5c },
{ REG_LENC_RED_A1, 0x48 },
{ REG_LENC_RED_B1, 0x00 },
{ REG_LENC_RED_A2_B2, 0x66 },
{ REG_LENC_GREEN_X0_H, 0x03 },
{ REG_LENC_GREEN_X0_L, 0x30 },
{ REG_LENC_GREEN_Y0_H, 0x02 },
{ REG_LENC_GREEN_Y0_L, 0x7c },
{ REG_LENC_GREEN_A1, 0x40 },
{ REG_LENC_GREEN_B1, 0x00 },
{ REG_LENC_GREEN_A2_B2, 0x66 },
{ REG_LENC_BLUE_X0_H, 0x03 },
{ REG_LENC_BLUE_X0_L, 0x10 },
{ REG_LENC_BLUE_Y0_H, 0x02 },
{ REG_LENC_BLUE_Y0_L, 0x7c },
{ REG_LENC_BLUE_A1, 0x3a },
{ REG_LENC_BLUE_B1, 0x00 },
{ REG_LENC_BLUE_A2_B2, 0x66 },
{ REG_CIP_CTRL00, 0x44 },
{ REG_SHARPENMT_THRESH1, 0x08 },
{ REG_SHARPENMT_THRESH2, 0x10 },
{ REG_SHARPENMT_OFFSET1, 0x12 },
{ REG_SHARPENMT_OFFSET2, 0x02 },
{ REG_SHARPEN_THRESH1, 0x08 },
{ REG_SHARPEN_THRESH2, 0x10 },
{ REG_CIP_CTRL01, 0xa6 },
{ REG_DENOISE_THRESH1, 0x08 },
{ REG_DENOISE_THRESH2, 0x10 },
{ REG_DENOISE_OFFSET1, 0x04 },
{ REG_DENOISE_OFFSET2, 0x12 },
{ 0x507e, 0x40 },
{ 0x507f, 0x20 },
{ 0x507b, 0x02 },
{ REG_CMX_MISC_CTRL, 0x01 },
{ 0x5084, 0x0c },
{ 0x5085, 0x3e },
{ 0x5005, 0x80 },
{ 0x3a0f, 0x30 },
{ 0x3a10, 0x28 },
{ 0x3a1b, 0x32 },
{ 0x3a1e, 0x26 },
{ 0x3a11, 0x60 },
{ 0x3a1f, 0x14 },
{ 0x5060, 0x69 },
{ 0x5061, 0x7d },
{ 0x5062, 0x7d },
{ 0x5063, 0x69 },
{ REG_NULL, 0x00 },
};
/* 1280X720 720p */
static struct sensor_register ov2659_720p[] = {
{ REG_TIMING_HS_H, 0x00 },
{ REG_TIMING_HS_L, 0xa0 },
{ REG_TIMING_VS_H, 0x00 },
{ REG_TIMING_VS_L, 0xf0 },
{ REG_TIMING_HW_H, 0x05 },
{ REG_TIMING_HW_L, 0xbf },
{ REG_TIMING_VH_H, 0x03 },
{ REG_TIMING_VH_L, 0xcb },
{ REG_TIMING_DVPHO_H, 0x05 },
{ REG_TIMING_DVPHO_L, 0x00 },
{ REG_TIMING_DVPVO_H, 0x02 },
{ REG_TIMING_DVPVO_L, 0xd0 },
{ REG_TIMING_HTS_H, 0x06 },
{ REG_TIMING_HTS_L, 0x4c },
{ REG_TIMING_VTS_H, 0x02 },
{ REG_TIMING_VTS_L, 0xe8 },
{ REG_TIMING_HOFFS_L, 0x10 },
{ REG_TIMING_VOFFS_L, 0x06 },
{ REG_TIMING_XINC, 0x11 },
{ REG_TIMING_YINC, 0x11 },
{ REG_TIMING_VERT_FORMAT, 0x80 },
{ REG_TIMING_HORIZ_FORMAT, 0x00 },
{ 0x3a03, 0xe8 },
{ 0x3a09, 0x6f },
{ 0x3a0b, 0x5d },
{ 0x3a15, 0x9a },
{ REG_NULL, 0x00 },
};
/* 1600X1200 UXGA */
static struct sensor_register ov2659_uxga[] = {
{ REG_TIMING_HS_H, 0x00 },
{ REG_TIMING_HS_L, 0x00 },
{ REG_TIMING_VS_H, 0x00 },
{ REG_TIMING_VS_L, 0x00 },
{ REG_TIMING_HW_H, 0x06 },
{ REG_TIMING_HW_L, 0x5f },
{ REG_TIMING_VH_H, 0x04 },
{ REG_TIMING_VH_L, 0xbb },
{ REG_TIMING_DVPHO_H, 0x06 },
{ REG_TIMING_DVPHO_L, 0x40 },
{ REG_TIMING_DVPVO_H, 0x04 },
{ REG_TIMING_DVPVO_L, 0xb0 },
{ REG_TIMING_HTS_H, 0x07 },
{ REG_TIMING_HTS_L, 0x9f },
{ REG_TIMING_VTS_H, 0x04 },
{ REG_TIMING_VTS_L, 0xd0 },
{ REG_TIMING_HOFFS_L, 0x10 },
{ REG_TIMING_VOFFS_L, 0x06 },
{ REG_TIMING_XINC, 0x11 },
{ REG_TIMING_YINC, 0x11 },
{ 0x3a02, 0x04 },
{ 0x3a03, 0xd0 },
{ 0x3a08, 0x00 },
{ 0x3a09, 0xb8 },
{ 0x3a0a, 0x00 },
{ 0x3a0b, 0x9a },
{ 0x3a0d, 0x08 },
{ 0x3a0e, 0x06 },
{ 0x3a14, 0x04 },
{ 0x3a15, 0x50 },
{ 0x3623, 0x00 },
{ 0x3634, 0x44 },
{ 0x3701, 0x44 },
{ 0x3702, 0x30 },
{ 0x3703, 0x48 },
{ 0x3704, 0x48 },
{ 0x3705, 0x18 },
{ REG_TIMING_VERT_FORMAT, 0x80 },
{ REG_TIMING_HORIZ_FORMAT, 0x00 },
{ 0x370a, 0x12 },
{ REG_VFIFO_READ_START_H, 0x00 },
{ REG_VFIFO_READ_START_L, 0x80 },
{ REG_ISP_CTRL02, 0x00 },
{ REG_NULL, 0x00 },
};
/* 1280X1024 SXGA */
static struct sensor_register ov2659_sxga[] = {
{ REG_TIMING_HS_H, 0x00 },
{ REG_TIMING_HS_L, 0x00 },
{ REG_TIMING_VS_H, 0x00 },
{ REG_TIMING_VS_L, 0x00 },
{ REG_TIMING_HW_H, 0x06 },
{ REG_TIMING_HW_L, 0x5f },
{ REG_TIMING_VH_H, 0x04 },
{ REG_TIMING_VH_L, 0xb7 },
{ REG_TIMING_DVPHO_H, 0x05 },
{ REG_TIMING_DVPHO_L, 0x00 },
{ REG_TIMING_DVPVO_H, 0x04 },
{ REG_TIMING_DVPVO_L, 0x00 },
{ REG_TIMING_HTS_H, 0x07 },
{ REG_TIMING_HTS_L, 0x9c },
{ REG_TIMING_VTS_H, 0x04 },
{ REG_TIMING_VTS_L, 0xd0 },
{ REG_TIMING_HOFFS_L, 0x10 },
{ REG_TIMING_VOFFS_L, 0x06 },
{ REG_TIMING_XINC, 0x11 },
{ REG_TIMING_YINC, 0x11 },
{ 0x3a02, 0x02 },
{ 0x3a03, 0x68 },
{ 0x3a08, 0x00 },
{ 0x3a09, 0x5c },
{ 0x3a0a, 0x00 },
{ 0x3a0b, 0x4d },
{ 0x3a0d, 0x08 },
{ 0x3a0e, 0x06 },
{ 0x3a14, 0x02 },
{ 0x3a15, 0x28 },
{ 0x3623, 0x00 },
{ 0x3634, 0x76 },
{ 0x3701, 0x44 },
{ 0x3702, 0x18 },
{ 0x3703, 0x24 },
{ 0x3704, 0x24 },
{ 0x3705, 0x0c },
{ REG_TIMING_VERT_FORMAT, 0x80 },
{ REG_TIMING_HORIZ_FORMAT, 0x00 },
{ 0x370a, 0x52 },
{ REG_VFIFO_READ_START_H, 0x00 },
{ REG_VFIFO_READ_START_L, 0x80 },
{ REG_ISP_CTRL02, 0x00 },
{ REG_NULL, 0x00 },
};
/* 1024X768 SXGA */
static struct sensor_register ov2659_xga[] = {
{ REG_TIMING_HS_H, 0x00 },
{ REG_TIMING_HS_L, 0x00 },
{ REG_TIMING_VS_H, 0x00 },
{ REG_TIMING_VS_L, 0x00 },
{ REG_TIMING_HW_H, 0x06 },
{ REG_TIMING_HW_L, 0x5f },
{ REG_TIMING_VH_H, 0x04 },
{ REG_TIMING_VH_L, 0xb7 },
{ REG_TIMING_DVPHO_H, 0x04 },
{ REG_TIMING_DVPHO_L, 0x00 },
{ REG_TIMING_DVPVO_H, 0x03 },
{ REG_TIMING_DVPVO_L, 0x00 },
{ REG_TIMING_HTS_H, 0x07 },
{ REG_TIMING_HTS_L, 0x9c },
{ REG_TIMING_VTS_H, 0x04 },
{ REG_TIMING_VTS_L, 0xd0 },
{ REG_TIMING_HOFFS_L, 0x10 },
{ REG_TIMING_VOFFS_L, 0x06 },
{ REG_TIMING_XINC, 0x11 },
{ REG_TIMING_YINC, 0x11 },
{ 0x3a02, 0x02 },
{ 0x3a03, 0x68 },
{ 0x3a08, 0x00 },
{ 0x3a09, 0x5c },
{ 0x3a0a, 0x00 },
{ 0x3a0b, 0x4d },
{ 0x3a0d, 0x08 },
{ 0x3a0e, 0x06 },
{ 0x3a14, 0x02 },
{ 0x3a15, 0x28 },
{ 0x3623, 0x00 },
{ 0x3634, 0x76 },
{ 0x3701, 0x44 },
{ 0x3702, 0x18 },
{ 0x3703, 0x24 },
{ 0x3704, 0x24 },
{ 0x3705, 0x0c },
{ REG_TIMING_VERT_FORMAT, 0x80 },
{ REG_TIMING_HORIZ_FORMAT, 0x00 },
{ 0x370a, 0x52 },
{ REG_VFIFO_READ_START_H, 0x00 },
{ REG_VFIFO_READ_START_L, 0x80 },
{ REG_ISP_CTRL02, 0x00 },
{ REG_NULL, 0x00 },
};
/* 800X600 SVGA */
static struct sensor_register ov2659_svga[] = {
{ REG_TIMING_HS_H, 0x00 },
{ REG_TIMING_HS_L, 0x00 },
{ REG_TIMING_VS_H, 0x00 },
{ REG_TIMING_VS_L, 0x00 },
{ REG_TIMING_HW_H, 0x06 },
{ REG_TIMING_HW_L, 0x5f },
{ REG_TIMING_VH_H, 0x04 },
{ REG_TIMING_VH_L, 0xb7 },
{ REG_TIMING_DVPHO_H, 0x03 },
{ REG_TIMING_DVPHO_L, 0x20 },
{ REG_TIMING_DVPVO_H, 0x02 },
{ REG_TIMING_DVPVO_L, 0x58 },
{ REG_TIMING_HTS_H, 0x05 },
{ REG_TIMING_HTS_L, 0x14 },
{ REG_TIMING_VTS_H, 0x02 },
{ REG_TIMING_VTS_L, 0x68 },
{ REG_TIMING_HOFFS_L, 0x08 },
{ REG_TIMING_VOFFS_L, 0x02 },
{ REG_TIMING_XINC, 0x31 },
{ REG_TIMING_YINC, 0x31 },
{ 0x3a02, 0x02 },
{ 0x3a03, 0x68 },
{ 0x3a08, 0x00 },
{ 0x3a09, 0x5c },
{ 0x3a0a, 0x00 },
{ 0x3a0b, 0x4d },
{ 0x3a0d, 0x08 },
{ 0x3a0e, 0x06 },
{ 0x3a14, 0x02 },
{ 0x3a15, 0x28 },
{ 0x3623, 0x00 },
{ 0x3634, 0x76 },
{ 0x3701, 0x44 },
{ 0x3702, 0x18 },
{ 0x3703, 0x24 },
{ 0x3704, 0x24 },
{ 0x3705, 0x0c },
{ REG_TIMING_VERT_FORMAT, 0x81 },
{ REG_TIMING_HORIZ_FORMAT, 0x01 },
{ 0x370a, 0x52 },
{ REG_VFIFO_READ_START_H, 0x00 },
{ REG_VFIFO_READ_START_L, 0x80 },
{ REG_ISP_CTRL02, 0x00 },
{ REG_NULL, 0x00 },
};
/* 640X480 VGA */
static struct sensor_register ov2659_vga[] = {
{ REG_TIMING_HS_H, 0x00 },
{ REG_TIMING_HS_L, 0x00 },
{ REG_TIMING_VS_H, 0x00 },
{ REG_TIMING_VS_L, 0x00 },
{ REG_TIMING_HW_H, 0x06 },
{ REG_TIMING_HW_L, 0x5f },
{ REG_TIMING_VH_H, 0x04 },
{ REG_TIMING_VH_L, 0xb7 },
{ REG_TIMING_DVPHO_H, 0x02 },
{ REG_TIMING_DVPHO_L, 0x80 },
{ REG_TIMING_DVPVO_H, 0x01 },
{ REG_TIMING_DVPVO_L, 0xe0 },
{ REG_TIMING_HTS_H, 0x05 },
{ REG_TIMING_HTS_L, 0x14 },
{ REG_TIMING_VTS_H, 0x02 },
{ REG_TIMING_VTS_L, 0x68 },
{ REG_TIMING_HOFFS_L, 0x08 },
{ REG_TIMING_VOFFS_L, 0x02 },
{ REG_TIMING_XINC, 0x31 },
{ REG_TIMING_YINC, 0x31 },
{ 0x3a02, 0x02 },
{ 0x3a03, 0x68 },
{ 0x3a08, 0x00 },
{ 0x3a09, 0x5c },
{ 0x3a0a, 0x00 },
{ 0x3a0b, 0x4d },
{ 0x3a0d, 0x08 },
{ 0x3a0e, 0x06 },
{ 0x3a14, 0x02 },
{ 0x3a15, 0x28 },
{ 0x3623, 0x00 },
{ 0x3634, 0x76 },
{ 0x3701, 0x44 },
{ 0x3702, 0x18 },
{ 0x3703, 0x24 },
{ 0x3704, 0x24 },
{ 0x3705, 0x0c },
{ REG_TIMING_VERT_FORMAT, 0x81 },
{ REG_TIMING_HORIZ_FORMAT, 0x01 },
{ 0x370a, 0x52 },
{ REG_VFIFO_READ_START_H, 0x00 },
{ REG_VFIFO_READ_START_L, 0x80 },
{ REG_ISP_CTRL02, 0x10 },
{ REG_NULL, 0x00 },
};
/* 320X240 QVGA */
static struct sensor_register ov2659_qvga[] = {
{ REG_TIMING_HS_H, 0x00 },
{ REG_TIMING_HS_L, 0x00 },
{ REG_TIMING_VS_H, 0x00 },
{ REG_TIMING_VS_L, 0x00 },
{ REG_TIMING_HW_H, 0x06 },
{ REG_TIMING_HW_L, 0x5f },
{ REG_TIMING_VH_H, 0x04 },
{ REG_TIMING_VH_L, 0xb7 },
{ REG_TIMING_DVPHO_H, 0x01 },
{ REG_TIMING_DVPHO_L, 0x40 },
{ REG_TIMING_DVPVO_H, 0x00 },
{ REG_TIMING_DVPVO_L, 0xf0 },
{ REG_TIMING_HTS_H, 0x05 },
{ REG_TIMING_HTS_L, 0x14 },
{ REG_TIMING_VTS_H, 0x02 },
{ REG_TIMING_VTS_L, 0x68 },
{ REG_TIMING_HOFFS_L, 0x08 },
{ REG_TIMING_VOFFS_L, 0x02 },
{ REG_TIMING_XINC, 0x31 },
{ REG_TIMING_YINC, 0x31 },
{ 0x3a02, 0x02 },
{ 0x3a03, 0x68 },
{ 0x3a08, 0x00 },
{ 0x3a09, 0x5c },
{ 0x3a0a, 0x00 },
{ 0x3a0b, 0x4d },
{ 0x3a0d, 0x08 },
{ 0x3a0e, 0x06 },
{ 0x3a14, 0x02 },
{ 0x3a15, 0x28 },
{ 0x3623, 0x00 },
{ 0x3634, 0x76 },
{ 0x3701, 0x44 },
{ 0x3702, 0x18 },
{ 0x3703, 0x24 },
{ 0x3704, 0x24 },
{ 0x3705, 0x0c },
{ REG_TIMING_VERT_FORMAT, 0x81 },
{ REG_TIMING_HORIZ_FORMAT, 0x01 },
{ 0x370a, 0x52 },
{ REG_VFIFO_READ_START_H, 0x00 },
{ REG_VFIFO_READ_START_L, 0x80 },
{ REG_ISP_CTRL02, 0x10 },
{ REG_NULL, 0x00 },
};
static const struct pll_ctrl_reg ctrl3[] = {
{ 1, 0x00 },
{ 2, 0x02 },
{ 3, 0x03 },
{ 4, 0x06 },
{ 6, 0x0d },
{ 8, 0x0e },
{ 12, 0x0f },
{ 16, 0x12 },
{ 24, 0x13 },
{ 32, 0x16 },
{ 48, 0x1b },
{ 64, 0x1e },
{ 96, 0x1f },
{ 0, 0x00 },
};
static const struct pll_ctrl_reg ctrl1[] = {
{ 2, 0x10 },
{ 4, 0x20 },
{ 6, 0x30 },
{ 8, 0x40 },
{ 10, 0x50 },
{ 12, 0x60 },
{ 14, 0x70 },
{ 16, 0x80 },
{ 18, 0x90 },
{ 20, 0xa0 },
{ 22, 0xb0 },
{ 24, 0xc0 },
{ 26, 0xd0 },
{ 28, 0xe0 },
{ 30, 0xf0 },
{ 0, 0x00 },
};
static const struct ov2659_framesize ov2659_framesizes[] = {
{ /* QVGA */
.width = 320,
.height = 240,
.regs = ov2659_qvga,
.max_exp_lines = 248,
}, { /* VGA */
.width = 640,
.height = 480,
.regs = ov2659_vga,
.max_exp_lines = 498,
}, { /* SVGA */
.width = 800,
.height = 600,
.regs = ov2659_svga,
.max_exp_lines = 498,
}, { /* XGA */
.width = 1024,
.height = 768,
.regs = ov2659_xga,
.max_exp_lines = 498,
}, { /* 720P */
.width = 1280,
.height = 720,
.regs = ov2659_720p,
.max_exp_lines = 498,
}, { /* SXGA */
.width = 1280,
.height = 1024,
.regs = ov2659_sxga,
.max_exp_lines = 1048,
}, { /* UXGA */
.width = 1600,
.height = 1200,
.regs = ov2659_uxga,
.max_exp_lines = 498,
},
};
/* YUV422 YUYV*/
static struct sensor_register ov2659_format_yuyv[] = {
{ REG_FORMAT_CTRL00, 0x30 },
{ REG_NULL, 0x0 },
};
/* YUV422 UYVY */
static struct sensor_register ov2659_format_uyvy[] = {
{ REG_FORMAT_CTRL00, 0x32 },
{ REG_NULL, 0x0 },
};
/* Raw Bayer BGGR */
static struct sensor_register ov2659_format_bggr[] = {
{ REG_FORMAT_CTRL00, 0x00 },
{ REG_NULL, 0x0 },
};
/* RGB565 */
static struct sensor_register ov2659_format_rgb565[] = {
{ REG_FORMAT_CTRL00, 0x60 },
{ REG_NULL, 0x0 },
};
static const struct ov2659_pixfmt ov2659_formats[] = {
{
.code = MEDIA_BUS_FMT_YUYV8_2X8,
.format_ctrl_regs = ov2659_format_yuyv,
}, {
.code = MEDIA_BUS_FMT_UYVY8_2X8,
.format_ctrl_regs = ov2659_format_uyvy,
}, {
.code = MEDIA_BUS_FMT_RGB565_2X8_BE,
.format_ctrl_regs = ov2659_format_rgb565,
}, {
.code = MEDIA_BUS_FMT_SBGGR8_1X8,
.format_ctrl_regs = ov2659_format_bggr,
},
};
static inline struct ov2659 *to_ov2659(struct v4l2_subdev *sd)
{
return container_of(sd, struct ov2659, sd);
}
/* sensor register write */
static int ov2659_write(struct i2c_client *client, u16 reg, u8 val)
{
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)
return 0;
dev_dbg(&client->dev,
"ov2659 write reg(0x%x val:0x%x) failed !\n", reg, val);
return ret;
}
/* sensor register read */
static int ov2659_read(struct i2c_client *client, u16 reg, u8 *val)
{
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) {
*val = buf[0];
return 0;
}
dev_dbg(&client->dev,
"ov2659 read reg(0x%x val:0x%x) failed !\n", reg, *val);
return ret;
}
static int ov2659_write_array(struct i2c_client *client,
const struct sensor_register *regs)
{
int i, ret = 0;
for (i = 0; ret == 0 && regs[i].addr; i++)
ret = ov2659_write(client, regs[i].addr, regs[i].value);
return ret;
}
static void ov2659_pll_calc_params(struct ov2659 *ov2659)
{
const struct ov2659_platform_data *pdata = ov2659->pdata;
u8 ctrl1_reg = 0, ctrl2_reg = 0, ctrl3_reg = 0;
struct i2c_client *client = ov2659->client;
unsigned int desired = pdata->link_frequency;
u32 prediv, postdiv, mult;
u32 bestdelta = -1;
u32 delta, actual;
int i, j;
for (i = 0; ctrl1[i].div != 0; i++) {
postdiv = ctrl1[i].div;
for (j = 0; ctrl3[j].div != 0; j++) {
prediv = ctrl3[j].div;
for (mult = 1; mult <= 63; mult++) {
actual = ov2659->xvclk_frequency;
actual *= mult;
actual /= prediv;
actual /= postdiv;
delta = actual - desired;
delta = abs(delta);
if ((delta < bestdelta) || (bestdelta == -1)) {
bestdelta = delta;
ctrl1_reg = ctrl1[i].reg;
ctrl2_reg = mult;
ctrl3_reg = ctrl3[j].reg;
}
}
}
}
ov2659->pll.ctrl1 = ctrl1_reg;
ov2659->pll.ctrl2 = ctrl2_reg;
ov2659->pll.ctrl3 = ctrl3_reg;
dev_dbg(&client->dev,
"Actual reg config: ctrl1_reg: %02x ctrl2_reg: %02x ctrl3_reg: %02x\n",
ctrl1_reg, ctrl2_reg, ctrl3_reg);
}
static int ov2659_set_pixel_clock(struct ov2659 *ov2659)
{
struct i2c_client *client = ov2659->client;
struct sensor_register pll_regs[] = {
{REG_SC_PLL_CTRL1, ov2659->pll.ctrl1},
{REG_SC_PLL_CTRL2, ov2659->pll.ctrl2},
{REG_SC_PLL_CTRL3, ov2659->pll.ctrl3},
{REG_NULL, 0x00},
};
dev_dbg(&client->dev, "%s\n", __func__);
return ov2659_write_array(client, pll_regs);
};
static void ov2659_get_default_format(struct v4l2_mbus_framefmt *format)
{
format->width = ov2659_framesizes[2].width;
format->height = ov2659_framesizes[2].height;
format->colorspace = V4L2_COLORSPACE_SRGB;
format->code = ov2659_formats[0].code;
format->field = V4L2_FIELD_NONE;
}
static void ov2659_set_streaming(struct ov2659 *ov2659, int on)
{
struct i2c_client *client = ov2659->client;
int ret;
on = !!on;
dev_dbg(&client->dev, "%s: on: %d\n", __func__, on);
ret = ov2659_write(client, REG_SOFTWARE_STANDBY, on);
if (ret)
dev_err(&client->dev, "ov2659 soft standby failed\n");
}
static int ov2659_init(struct v4l2_subdev *sd, u32 val)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return ov2659_write_array(client, ov2659_init_regs);
}
/*
* V4L2 subdev video and pad level operations
*/
static int ov2659_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
dev_dbg(&client->dev, "%s:\n", __func__);
if (code->index >= ARRAY_SIZE(ov2659_formats))
return -EINVAL;
code->code = ov2659_formats[code->index].code;
return 0;
}
static int ov2659_enum_frame_sizes(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_size_enum *fse)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
int i = ARRAY_SIZE(ov2659_formats);
dev_dbg(&client->dev, "%s:\n", __func__);
if (fse->index >= ARRAY_SIZE(ov2659_framesizes))
return -EINVAL;
while (--i)
if (fse->code == ov2659_formats[i].code)
break;
fse->code = ov2659_formats[i].code;
fse->min_width = ov2659_framesizes[fse->index].width;
fse->max_width = fse->min_width;
fse->max_height = ov2659_framesizes[fse->index].height;
fse->min_height = fse->max_height;
return 0;
}
static int ov2659_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov2659 *ov2659 = to_ov2659(sd);
dev_dbg(&client->dev, "ov2659_get_fmt\n");
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
struct v4l2_mbus_framefmt *mf;
mf = v4l2_subdev_get_try_format(sd, cfg, 0);
mutex_lock(&ov2659->lock);
fmt->format = *mf;
mutex_unlock(&ov2659->lock);
return 0;
#else
return -ENOTTY;
#endif
}
mutex_lock(&ov2659->lock);
fmt->format = ov2659->format;
mutex_unlock(&ov2659->lock);
dev_dbg(&client->dev, "ov2659_get_fmt: %x %dx%d\n",
ov2659->format.code, ov2659->format.width,
ov2659->format.height);
return 0;
}
static void __ov2659_try_frame_size(struct v4l2_mbus_framefmt *mf,
const struct ov2659_framesize **size)
{
const struct ov2659_framesize *fsize = &ov2659_framesizes[0];
const struct ov2659_framesize *match = NULL;
int i = ARRAY_SIZE(ov2659_framesizes);
unsigned int min_err = UINT_MAX;
while (i--) {
int err = abs(fsize->width - mf->width)
+ abs(fsize->height - mf->height);
if ((err < min_err) && (fsize->regs[0].addr)) {
min_err = err;
match = fsize;
}
fsize++;
}
if (!match)
match = &ov2659_framesizes[2];
mf->width = match->width;
mf->height = match->height;
if (size)
*size = match;
}
static int ov2659_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
int index = ARRAY_SIZE(ov2659_formats);
struct v4l2_mbus_framefmt *mf = &fmt->format;
const struct ov2659_framesize *size = NULL;
struct ov2659 *ov2659 = to_ov2659(sd);
int ret = 0;
dev_dbg(&client->dev, "ov2659_set_fmt\n");
__ov2659_try_frame_size(mf, &size);
while (--index >= 0)
if (ov2659_formats[index].code == mf->code)
break;
if (index < 0)
return -EINVAL;
mf->colorspace = V4L2_COLORSPACE_SRGB;
mf->code = ov2659_formats[index].code;
mf->field = V4L2_FIELD_NONE;
mutex_lock(&ov2659->lock);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
*mf = fmt->format;
#else
return -ENOTTY;
#endif
} else {
s64 val;
if (ov2659->streaming) {
mutex_unlock(&ov2659->lock);
return -EBUSY;
}
ov2659->frame_size = size;
ov2659->format = fmt->format;
ov2659->format_ctrl_regs =
ov2659_formats[index].format_ctrl_regs;
if (ov2659->format.code != MEDIA_BUS_FMT_SBGGR8_1X8)
val = ov2659->pdata->link_frequency / 2;
else
val = ov2659->pdata->link_frequency;
ret = v4l2_ctrl_s_ctrl_int64(ov2659->link_frequency, val);
if (ret < 0)
dev_warn(&client->dev,
"failed to set link_frequency rate (%d)\n",
ret);
}
mutex_unlock(&ov2659->lock);
return ret;
}
static int ov2659_set_frame_size(struct ov2659 *ov2659)
{
struct i2c_client *client = ov2659->client;
dev_dbg(&client->dev, "%s\n", __func__);
return ov2659_write_array(ov2659->client, ov2659->frame_size->regs);
}
static int ov2659_set_format(struct ov2659 *ov2659)
{
struct i2c_client *client = ov2659->client;
dev_dbg(&client->dev, "%s\n", __func__);
return ov2659_write_array(ov2659->client, ov2659->format_ctrl_regs);
}
static int ov2659_s_stream(struct v4l2_subdev *sd, int on)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct ov2659 *ov2659 = to_ov2659(sd);
int ret = 0;
dev_dbg(&client->dev, "%s: on: %d\n", __func__, on);
mutex_lock(&ov2659->lock);
on = !!on;
if (ov2659->streaming == on)
goto unlock;
if (!on) {
/* Stop Streaming Sequence */
ov2659_set_streaming(ov2659, 0);
ov2659->streaming = on;
goto unlock;
}
ov2659_set_pixel_clock(ov2659);
ov2659_set_frame_size(ov2659);
ov2659_set_format(ov2659);
ov2659_set_streaming(ov2659, 1);
ov2659->streaming = on;
unlock:
mutex_unlock(&ov2659->lock);
return ret;
}
static int ov2659_set_test_pattern(struct ov2659 *ov2659, int value)
{
struct i2c_client *client = v4l2_get_subdevdata(&ov2659->sd);
int ret;
u8 val;
ret = ov2659_read(client, REG_PRE_ISP_CTRL00, &val);
if (ret < 0)
return ret;
switch (value) {
case 0:
val &= ~TEST_PATTERN_ENABLE;
break;
case 1:
val &= VERTICAL_COLOR_BAR_MASK;
val |= TEST_PATTERN_ENABLE;
break;
}
return ov2659_write(client, REG_PRE_ISP_CTRL00, val);
}
static int ov2659_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov2659 *ov2659 =
container_of(ctrl->handler, struct ov2659, ctrls);
switch (ctrl->id) {
case V4L2_CID_TEST_PATTERN:
return ov2659_set_test_pattern(ov2659, ctrl->val);
}
return 0;
}
static const struct v4l2_ctrl_ops ov2659_ctrl_ops = {
.s_ctrl = ov2659_s_ctrl,
};
static const char * const ov2659_test_pattern_menu[] = {
"Disabled",
"Vertical Color Bars",
};
/* -----------------------------------------------------------------------------
* V4L2 subdev internal operations
*/
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static int ov2659_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format =
v4l2_subdev_get_try_format(sd, fh->pad, 0);
dev_dbg(&client->dev, "%s:\n", __func__);
ov2659_get_default_format(format);
return 0;
}
#endif
static const struct v4l2_subdev_core_ops ov2659_subdev_core_ops = {
.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 ov2659_subdev_video_ops = {
.s_stream = ov2659_s_stream,
};
static const struct v4l2_subdev_pad_ops ov2659_subdev_pad_ops = {
.enum_mbus_code = ov2659_enum_mbus_code,
.enum_frame_size = ov2659_enum_frame_sizes,
.get_fmt = ov2659_get_fmt,
.set_fmt = ov2659_set_fmt,
};
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static const struct v4l2_subdev_ops ov2659_subdev_ops = {
.core = &ov2659_subdev_core_ops,
.video = &ov2659_subdev_video_ops,
.pad = &ov2659_subdev_pad_ops,
};
static const struct v4l2_subdev_internal_ops ov2659_subdev_internal_ops = {
.open = ov2659_open,
};
#endif
static int ov2659_detect(struct v4l2_subdev *sd)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u8 pid, ver;
int ret;
dev_dbg(&client->dev, "%s:\n", __func__);
ret = ov2659_write(client, REG_SOFTWARE_RESET, 0x01);
if (ret != 0) {
dev_err(&client->dev, "Sensor soft reset failed\n");
return -ENODEV;
}
usleep_range(1000, 2000);
/* Check sensor revision */
ret = ov2659_read(client, REG_SC_CHIP_ID_H, &pid);
if (!ret)
ret = ov2659_read(client, REG_SC_CHIP_ID_L, &ver);
if (!ret) {
unsigned short id;
id = OV265X_ID(pid, ver);
if (id != OV2659_ID)
dev_err(&client->dev,
"Sensor detection failed (%04X, %d)\n",
id, ret);
else {
dev_info(&client->dev, "Found OV%04X sensor\n", id);
ret = ov2659_init(sd, 0);
}
}
return ret;
}
static struct ov2659_platform_data *
ov2659_get_pdata(struct i2c_client *client)
{
struct ov2659_platform_data *pdata;
struct v4l2_of_endpoint *bus_cfg;
struct device_node *endpoint;
if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
return client->dev.platform_data;
endpoint = of_graph_get_next_endpoint(client->dev.of_node, NULL);
if (!endpoint)
return NULL;
bus_cfg = v4l2_of_alloc_parse_endpoint(endpoint);
if (IS_ERR(bus_cfg)) {
pdata = NULL;
goto done;
}
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
goto done;
if (!bus_cfg->nr_of_link_frequencies) {
dev_err(&client->dev,
"link-frequencies property not found or too many\n");
pdata = NULL;
goto done;
}
pdata->link_frequency = bus_cfg->link_frequencies[0];
done:
v4l2_of_free_endpoint(bus_cfg);
of_node_put(endpoint);
return pdata;
}
static int ov2659_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
const struct ov2659_platform_data *pdata = ov2659_get_pdata(client);
struct v4l2_subdev *sd;
struct ov2659 *ov2659;
struct clk *clk;
int ret;
if (!pdata) {
dev_err(&client->dev, "platform data not specified\n");
return -EINVAL;
}
ov2659 = devm_kzalloc(&client->dev, sizeof(*ov2659), GFP_KERNEL);
if (!ov2659)
return -ENOMEM;
ov2659->pdata = pdata;
ov2659->client = client;
clk = devm_clk_get(&client->dev, "xvclk");
if (IS_ERR(clk))
return PTR_ERR(clk);
ov2659->xvclk_frequency = clk_get_rate(clk);
if (ov2659->xvclk_frequency < 6000000 ||
ov2659->xvclk_frequency > 27000000)
return -EINVAL;
v4l2_ctrl_handler_init(&ov2659->ctrls, 2);
ov2659->link_frequency =
v4l2_ctrl_new_std(&ov2659->ctrls, &ov2659_ctrl_ops,
V4L2_CID_PIXEL_RATE,
pdata->link_frequency / 2,
pdata->link_frequency, 1,
pdata->link_frequency);
v4l2_ctrl_new_std_menu_items(&ov2659->ctrls, &ov2659_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(ov2659_test_pattern_menu) - 1,
0, 0, ov2659_test_pattern_menu);
ov2659->sd.ctrl_handler = &ov2659->ctrls;
if (ov2659->ctrls.error) {
dev_err(&client->dev, "%s: control initialization error %d\n",
__func__, ov2659->ctrls.error);
return ov2659->ctrls.error;
}
sd = &ov2659->sd;
client->flags |= I2C_CLIENT_SCCB;
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
v4l2_i2c_subdev_init(sd, client, &ov2659_subdev_ops);
sd->internal_ops = &ov2659_subdev_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
V4L2_SUBDEV_FL_HAS_EVENTS;
#endif
#if defined(CONFIG_MEDIA_CONTROLLER)
ov2659->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &ov2659->pad);
if (ret < 0) {
v4l2_ctrl_handler_free(&ov2659->ctrls);
return ret;
}
#endif
mutex_init(&ov2659->lock);
ov2659_get_default_format(&ov2659->format);
ov2659->frame_size = &ov2659_framesizes[2];
ov2659->format_ctrl_regs = ov2659_formats[0].format_ctrl_regs;
ret = ov2659_detect(sd);
if (ret < 0)
goto error;
/* Calculate the PLL register value needed */
ov2659_pll_calc_params(ov2659);
ret = v4l2_async_register_subdev(&ov2659->sd);
if (ret)
goto error;
dev_info(&client->dev, "%s sensor driver registered !!\n", sd->name);
return 0;
error:
v4l2_ctrl_handler_free(&ov2659->ctrls);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&sd->entity);
#endif
mutex_destroy(&ov2659->lock);
return ret;
}
static int ov2659_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov2659 *ov2659 = to_ov2659(sd);
v4l2_ctrl_handler_free(&ov2659->ctrls);
v4l2_async_unregister_subdev(sd);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&sd->entity);
#endif
mutex_destroy(&ov2659->lock);
return 0;
}
static const struct i2c_device_id ov2659_id[] = {
{ "ov2659", 0 },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(i2c, ov2659_id);
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id ov2659_of_match[] = {
{ .compatible = "ovti,ov2659", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, ov2659_of_match);
#endif
static struct i2c_driver ov2659_i2c_driver = {
.driver = {
.name = DRIVER_NAME,
.of_match_table = of_match_ptr(ov2659_of_match),
},
.probe = ov2659_probe,
.remove = ov2659_remove,
.id_table = ov2659_id,
};
module_i2c_driver(ov2659_i2c_driver);
MODULE_AUTHOR("Benoit Parrot <bparrot@ti.com>");
MODULE_DESCRIPTION("OV2659 CMOS Image Sensor driver");
MODULE_LICENSE("GPL v2");
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