diff options
Diffstat (limited to 'drivers/media/i2c/soc_camera/ov9740.c')
| -rw-r--r-- | drivers/media/i2c/soc_camera/ov9740.c | 997 |
1 files changed, 997 insertions, 0 deletions
diff --git a/drivers/media/i2c/soc_camera/ov9740.c b/drivers/media/i2c/soc_camera/ov9740.c new file mode 100644 index 000000000..755de2289 --- /dev/null +++ b/drivers/media/i2c/soc_camera/ov9740.c @@ -0,0 +1,997 @@ +/* + * OmniVision OV9740 Camera Driver + * + * Copyright (C) 2011 NVIDIA Corporation + * + * Based on ov9640 camera driver. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/slab.h> +#include <linux/v4l2-mediabus.h> + +#include <media/soc_camera.h> +#include <media/v4l2-clk.h> +#include <media/v4l2-ctrls.h> + +#define to_ov9740(sd) container_of(sd, struct ov9740_priv, subdev) + +/* General Status Registers */ +#define OV9740_MODEL_ID_HI 0x0000 +#define OV9740_MODEL_ID_LO 0x0001 +#define OV9740_REVISION_NUMBER 0x0002 +#define OV9740_MANUFACTURER_ID 0x0003 +#define OV9740_SMIA_VERSION 0x0004 + +/* General Setup Registers */ +#define OV9740_MODE_SELECT 0x0100 +#define OV9740_IMAGE_ORT 0x0101 +#define OV9740_SOFTWARE_RESET 0x0103 +#define OV9740_GRP_PARAM_HOLD 0x0104 +#define OV9740_MSK_CORRUP_FM 0x0105 + +/* Timing Setting */ +#define OV9740_FRM_LENGTH_LN_HI 0x0340 /* VTS */ +#define OV9740_FRM_LENGTH_LN_LO 0x0341 /* VTS */ +#define OV9740_LN_LENGTH_PCK_HI 0x0342 /* HTS */ +#define OV9740_LN_LENGTH_PCK_LO 0x0343 /* HTS */ +#define OV9740_X_ADDR_START_HI 0x0344 +#define OV9740_X_ADDR_START_LO 0x0345 +#define OV9740_Y_ADDR_START_HI 0x0346 +#define OV9740_Y_ADDR_START_LO 0x0347 +#define OV9740_X_ADDR_END_HI 0x0348 +#define OV9740_X_ADDR_END_LO 0x0349 +#define OV9740_Y_ADDR_END_HI 0x034a +#define OV9740_Y_ADDR_END_LO 0x034b +#define OV9740_X_OUTPUT_SIZE_HI 0x034c +#define OV9740_X_OUTPUT_SIZE_LO 0x034d +#define OV9740_Y_OUTPUT_SIZE_HI 0x034e +#define OV9740_Y_OUTPUT_SIZE_LO 0x034f + +/* IO Control Registers */ +#define OV9740_IO_CREL00 0x3002 +#define OV9740_IO_CREL01 0x3004 +#define OV9740_IO_CREL02 0x3005 +#define OV9740_IO_OUTPUT_SEL01 0x3026 +#define OV9740_IO_OUTPUT_SEL02 0x3027 + +/* AWB Registers */ +#define OV9740_AWB_MANUAL_CTRL 0x3406 + +/* Analog Control Registers */ +#define OV9740_ANALOG_CTRL01 0x3601 +#define OV9740_ANALOG_CTRL02 0x3602 +#define OV9740_ANALOG_CTRL03 0x3603 +#define OV9740_ANALOG_CTRL04 0x3604 +#define OV9740_ANALOG_CTRL10 0x3610 +#define OV9740_ANALOG_CTRL12 0x3612 +#define OV9740_ANALOG_CTRL15 0x3615 +#define OV9740_ANALOG_CTRL20 0x3620 +#define OV9740_ANALOG_CTRL21 0x3621 +#define OV9740_ANALOG_CTRL22 0x3622 +#define OV9740_ANALOG_CTRL30 0x3630 +#define OV9740_ANALOG_CTRL31 0x3631 +#define OV9740_ANALOG_CTRL32 0x3632 +#define OV9740_ANALOG_CTRL33 0x3633 + +/* Sensor Control */ +#define OV9740_SENSOR_CTRL03 0x3703 +#define OV9740_SENSOR_CTRL04 0x3704 +#define OV9740_SENSOR_CTRL05 0x3705 +#define OV9740_SENSOR_CTRL07 0x3707 + +/* Timing Control */ +#define OV9740_TIMING_CTRL17 0x3817 +#define OV9740_TIMING_CTRL19 0x3819 +#define OV9740_TIMING_CTRL33 0x3833 +#define OV9740_TIMING_CTRL35 0x3835 + +/* Banding Filter */ +#define OV9740_AEC_MAXEXPO_60_H 0x3a02 +#define OV9740_AEC_MAXEXPO_60_L 0x3a03 +#define OV9740_AEC_B50_STEP_HI 0x3a08 +#define OV9740_AEC_B50_STEP_LO 0x3a09 +#define OV9740_AEC_B60_STEP_HI 0x3a0a +#define OV9740_AEC_B60_STEP_LO 0x3a0b +#define OV9740_AEC_CTRL0D 0x3a0d +#define OV9740_AEC_CTRL0E 0x3a0e +#define OV9740_AEC_MAXEXPO_50_H 0x3a14 +#define OV9740_AEC_MAXEXPO_50_L 0x3a15 + +/* AEC/AGC Control */ +#define OV9740_AEC_ENABLE 0x3503 +#define OV9740_GAIN_CEILING_01 0x3a18 +#define OV9740_GAIN_CEILING_02 0x3a19 +#define OV9740_AEC_HI_THRESHOLD 0x3a11 +#define OV9740_AEC_3A1A 0x3a1a +#define OV9740_AEC_CTRL1B_WPT2 0x3a1b +#define OV9740_AEC_CTRL0F_WPT 0x3a0f +#define OV9740_AEC_CTRL10_BPT 0x3a10 +#define OV9740_AEC_CTRL1E_BPT2 0x3a1e +#define OV9740_AEC_LO_THRESHOLD 0x3a1f + +/* BLC Control */ +#define OV9740_BLC_AUTO_ENABLE 0x4002 +#define OV9740_BLC_MODE 0x4005 + +/* VFIFO */ +#define OV9740_VFIFO_READ_START_HI 0x4608 +#define OV9740_VFIFO_READ_START_LO 0x4609 + +/* DVP Control */ +#define OV9740_DVP_VSYNC_CTRL02 0x4702 +#define OV9740_DVP_VSYNC_MODE 0x4704 +#define OV9740_DVP_VSYNC_CTRL06 0x4706 + +/* PLL Setting */ +#define OV9740_PLL_MODE_CTRL01 0x3104 +#define OV9740_PRE_PLL_CLK_DIV 0x0305 +#define OV9740_PLL_MULTIPLIER 0x0307 +#define OV9740_VT_SYS_CLK_DIV 0x0303 +#define OV9740_VT_PIX_CLK_DIV 0x0301 +#define OV9740_PLL_CTRL3010 0x3010 +#define OV9740_VFIFO_CTRL00 0x460e + +/* ISP Control */ +#define OV9740_ISP_CTRL00 0x5000 +#define OV9740_ISP_CTRL01 0x5001 +#define OV9740_ISP_CTRL03 0x5003 +#define OV9740_ISP_CTRL05 0x5005 +#define OV9740_ISP_CTRL12 0x5012 +#define OV9740_ISP_CTRL19 0x5019 +#define OV9740_ISP_CTRL1A 0x501a +#define OV9740_ISP_CTRL1E 0x501e +#define OV9740_ISP_CTRL1F 0x501f +#define OV9740_ISP_CTRL20 0x5020 +#define OV9740_ISP_CTRL21 0x5021 + +/* AWB */ +#define OV9740_AWB_CTRL00 0x5180 +#define OV9740_AWB_CTRL01 0x5181 +#define OV9740_AWB_CTRL02 0x5182 +#define OV9740_AWB_CTRL03 0x5183 +#define OV9740_AWB_ADV_CTRL01 0x5184 +#define OV9740_AWB_ADV_CTRL02 0x5185 +#define OV9740_AWB_ADV_CTRL03 0x5186 +#define OV9740_AWB_ADV_CTRL04 0x5187 +#define OV9740_AWB_ADV_CTRL05 0x5188 +#define OV9740_AWB_ADV_CTRL06 0x5189 +#define OV9740_AWB_ADV_CTRL07 0x518a +#define OV9740_AWB_ADV_CTRL08 0x518b +#define OV9740_AWB_ADV_CTRL09 0x518c +#define OV9740_AWB_ADV_CTRL10 0x518d +#define OV9740_AWB_ADV_CTRL11 0x518e +#define OV9740_AWB_CTRL0F 0x518f +#define OV9740_AWB_CTRL10 0x5190 +#define OV9740_AWB_CTRL11 0x5191 +#define OV9740_AWB_CTRL12 0x5192 +#define OV9740_AWB_CTRL13 0x5193 +#define OV9740_AWB_CTRL14 0x5194 + +/* MIPI Control */ +#define OV9740_MIPI_CTRL00 0x4800 +#define OV9740_MIPI_3837 0x3837 +#define OV9740_MIPI_CTRL01 0x4801 +#define OV9740_MIPI_CTRL03 0x4803 +#define OV9740_MIPI_CTRL05 0x4805 +#define OV9740_VFIFO_RD_CTRL 0x4601 +#define OV9740_MIPI_CTRL_3012 0x3012 +#define OV9740_SC_CMMM_MIPI_CTR 0x3014 + +#define OV9740_MAX_WIDTH 1280 +#define OV9740_MAX_HEIGHT 720 + +/* Misc. structures */ +struct ov9740_reg { + u16 reg; + u8 val; +}; + +struct ov9740_priv { + struct v4l2_subdev subdev; + struct v4l2_ctrl_handler hdl; + struct v4l2_clk *clk; + + u16 model; + u8 revision; + u8 manid; + u8 smiaver; + + bool flag_vflip; + bool flag_hflip; + + /* For suspend/resume. */ + struct v4l2_mbus_framefmt current_mf; + bool current_enable; +}; + +static const struct ov9740_reg ov9740_defaults[] = { + /* Software Reset */ + { OV9740_SOFTWARE_RESET, 0x01 }, + + /* Banding Filter */ + { OV9740_AEC_B50_STEP_HI, 0x00 }, + { OV9740_AEC_B50_STEP_LO, 0xe8 }, + { OV9740_AEC_CTRL0E, 0x03 }, + { OV9740_AEC_MAXEXPO_50_H, 0x15 }, + { OV9740_AEC_MAXEXPO_50_L, 0xc6 }, + { OV9740_AEC_B60_STEP_HI, 0x00 }, + { OV9740_AEC_B60_STEP_LO, 0xc0 }, + { OV9740_AEC_CTRL0D, 0x04 }, + { OV9740_AEC_MAXEXPO_60_H, 0x18 }, + { OV9740_AEC_MAXEXPO_60_L, 0x20 }, + + /* LC */ + { 0x5842, 0x02 }, { 0x5843, 0x5e }, { 0x5844, 0x04 }, { 0x5845, 0x32 }, + { 0x5846, 0x03 }, { 0x5847, 0x29 }, { 0x5848, 0x02 }, { 0x5849, 0xcc }, + + /* Un-documented OV9740 registers */ + { 0x5800, 0x29 }, { 0x5801, 0x25 }, { 0x5802, 0x20 }, { 0x5803, 0x21 }, + { 0x5804, 0x26 }, { 0x5805, 0x2e }, { 0x5806, 0x11 }, { 0x5807, 0x0c }, + { 0x5808, 0x09 }, { 0x5809, 0x0a }, { 0x580a, 0x0e }, { 0x580b, 0x16 }, + { 0x580c, 0x06 }, { 0x580d, 0x02 }, { 0x580e, 0x00 }, { 0x580f, 0x00 }, + { 0x5810, 0x04 }, { 0x5811, 0x0a }, { 0x5812, 0x05 }, { 0x5813, 0x02 }, + { 0x5814, 0x00 }, { 0x5815, 0x00 }, { 0x5816, 0x03 }, { 0x5817, 0x09 }, + { 0x5818, 0x0f }, { 0x5819, 0x0a }, { 0x581a, 0x07 }, { 0x581b, 0x08 }, + { 0x581c, 0x0b }, { 0x581d, 0x14 }, { 0x581e, 0x28 }, { 0x581f, 0x23 }, + { 0x5820, 0x1d }, { 0x5821, 0x1e }, { 0x5822, 0x24 }, { 0x5823, 0x2a }, + { 0x5824, 0x4f }, { 0x5825, 0x6f }, { 0x5826, 0x5f }, { 0x5827, 0x7f }, + { 0x5828, 0x9f }, { 0x5829, 0x5f }, { 0x582a, 0x8f }, { 0x582b, 0x9e }, + { 0x582c, 0x8f }, { 0x582d, 0x9f }, { 0x582e, 0x4f }, { 0x582f, 0x87 }, + { 0x5830, 0x86 }, { 0x5831, 0x97 }, { 0x5832, 0xae }, { 0x5833, 0x3f }, + { 0x5834, 0x8e }, { 0x5835, 0x7c }, { 0x5836, 0x7e }, { 0x5837, 0xaf }, + { 0x5838, 0x8f }, { 0x5839, 0x8f }, { 0x583a, 0x9f }, { 0x583b, 0x7f }, + { 0x583c, 0x5f }, + + /* Y Gamma */ + { 0x5480, 0x07 }, { 0x5481, 0x18 }, { 0x5482, 0x2c }, { 0x5483, 0x4e }, + { 0x5484, 0x5e }, { 0x5485, 0x6b }, { 0x5486, 0x77 }, { 0x5487, 0x82 }, + { 0x5488, 0x8c }, { 0x5489, 0x95 }, { 0x548a, 0xa4 }, { 0x548b, 0xb1 }, + { 0x548c, 0xc6 }, { 0x548d, 0xd8 }, { 0x548e, 0xe9 }, + + /* UV Gamma */ + { 0x5490, 0x0f }, { 0x5491, 0xff }, { 0x5492, 0x0d }, { 0x5493, 0x05 }, + { 0x5494, 0x07 }, { 0x5495, 0x1a }, { 0x5496, 0x04 }, { 0x5497, 0x01 }, + { 0x5498, 0x03 }, { 0x5499, 0x53 }, { 0x549a, 0x02 }, { 0x549b, 0xeb }, + { 0x549c, 0x02 }, { 0x549d, 0xa0 }, { 0x549e, 0x02 }, { 0x549f, 0x67 }, + { 0x54a0, 0x02 }, { 0x54a1, 0x3b }, { 0x54a2, 0x02 }, { 0x54a3, 0x18 }, + { 0x54a4, 0x01 }, { 0x54a5, 0xe7 }, { 0x54a6, 0x01 }, { 0x54a7, 0xc3 }, + { 0x54a8, 0x01 }, { 0x54a9, 0x94 }, { 0x54aa, 0x01 }, { 0x54ab, 0x72 }, + { 0x54ac, 0x01 }, { 0x54ad, 0x57 }, + + /* AWB */ + { OV9740_AWB_CTRL00, 0xf0 }, + { OV9740_AWB_CTRL01, 0x00 }, + { OV9740_AWB_CTRL02, 0x41 }, + { OV9740_AWB_CTRL03, 0x42 }, + { OV9740_AWB_ADV_CTRL01, 0x8a }, + { OV9740_AWB_ADV_CTRL02, 0x61 }, + { OV9740_AWB_ADV_CTRL03, 0xce }, + { OV9740_AWB_ADV_CTRL04, 0xa8 }, + { OV9740_AWB_ADV_CTRL05, 0x17 }, + { OV9740_AWB_ADV_CTRL06, 0x1f }, + { OV9740_AWB_ADV_CTRL07, 0x27 }, + { OV9740_AWB_ADV_CTRL08, 0x41 }, + { OV9740_AWB_ADV_CTRL09, 0x34 }, + { OV9740_AWB_ADV_CTRL10, 0xf0 }, + { OV9740_AWB_ADV_CTRL11, 0x10 }, + { OV9740_AWB_CTRL0F, 0xff }, + { OV9740_AWB_CTRL10, 0x00 }, + { OV9740_AWB_CTRL11, 0xff }, + { OV9740_AWB_CTRL12, 0x00 }, + { OV9740_AWB_CTRL13, 0xff }, + { OV9740_AWB_CTRL14, 0x00 }, + + /* CIP */ + { 0x530d, 0x12 }, + + /* CMX */ + { 0x5380, 0x01 }, { 0x5381, 0x00 }, { 0x5382, 0x00 }, { 0x5383, 0x17 }, + { 0x5384, 0x00 }, { 0x5385, 0x01 }, { 0x5386, 0x00 }, { 0x5387, 0x00 }, + { 0x5388, 0x00 }, { 0x5389, 0xe0 }, { 0x538a, 0x00 }, { 0x538b, 0x20 }, + { 0x538c, 0x00 }, { 0x538d, 0x00 }, { 0x538e, 0x00 }, { 0x538f, 0x16 }, + { 0x5390, 0x00 }, { 0x5391, 0x9c }, { 0x5392, 0x00 }, { 0x5393, 0xa0 }, + { 0x5394, 0x18 }, + + /* 50/60 Detection */ + { 0x3c0a, 0x9c }, { 0x3c0b, 0x3f }, + + /* Output Select */ + { OV9740_IO_OUTPUT_SEL01, 0x00 }, + { OV9740_IO_OUTPUT_SEL02, 0x00 }, + { OV9740_IO_CREL00, 0x00 }, + { OV9740_IO_CREL01, 0x00 }, + { OV9740_IO_CREL02, 0x00 }, + + /* AWB Control */ + { OV9740_AWB_MANUAL_CTRL, 0x00 }, + + /* Analog Control */ + { OV9740_ANALOG_CTRL03, 0xaa }, + { OV9740_ANALOG_CTRL32, 0x2f }, + { OV9740_ANALOG_CTRL20, 0x66 }, + { OV9740_ANALOG_CTRL21, 0xc0 }, + { OV9740_ANALOG_CTRL31, 0x52 }, + { OV9740_ANALOG_CTRL33, 0x50 }, + { OV9740_ANALOG_CTRL30, 0xca }, + { OV9740_ANALOG_CTRL04, 0x0c }, + { OV9740_ANALOG_CTRL01, 0x40 }, + { OV9740_ANALOG_CTRL02, 0x16 }, + { OV9740_ANALOG_CTRL10, 0xa1 }, + { OV9740_ANALOG_CTRL12, 0x24 }, + { OV9740_ANALOG_CTRL22, 0x9f }, + { OV9740_ANALOG_CTRL15, 0xf0 }, + + /* Sensor Control */ + { OV9740_SENSOR_CTRL03, 0x42 }, + { OV9740_SENSOR_CTRL04, 0x10 }, + { OV9740_SENSOR_CTRL05, 0x45 }, + { OV9740_SENSOR_CTRL07, 0x14 }, + + /* Timing Control */ + { OV9740_TIMING_CTRL33, 0x04 }, + { OV9740_TIMING_CTRL35, 0x02 }, + { OV9740_TIMING_CTRL19, 0x6e }, + { OV9740_TIMING_CTRL17, 0x94 }, + + /* AEC/AGC Control */ + { OV9740_AEC_ENABLE, 0x10 }, + { OV9740_GAIN_CEILING_01, 0x00 }, + { OV9740_GAIN_CEILING_02, 0x7f }, + { OV9740_AEC_HI_THRESHOLD, 0xa0 }, + { OV9740_AEC_3A1A, 0x05 }, + { OV9740_AEC_CTRL1B_WPT2, 0x50 }, + { OV9740_AEC_CTRL0F_WPT, 0x50 }, + { OV9740_AEC_CTRL10_BPT, 0x4c }, + { OV9740_AEC_CTRL1E_BPT2, 0x4c }, + { OV9740_AEC_LO_THRESHOLD, 0x26 }, + + /* BLC Control */ + { OV9740_BLC_AUTO_ENABLE, 0x45 }, + { OV9740_BLC_MODE, 0x18 }, + + /* DVP Control */ + { OV9740_DVP_VSYNC_CTRL02, 0x04 }, + { OV9740_DVP_VSYNC_MODE, 0x00 }, + { OV9740_DVP_VSYNC_CTRL06, 0x08 }, + + /* PLL Setting */ + { OV9740_PLL_MODE_CTRL01, 0x20 }, + { OV9740_PRE_PLL_CLK_DIV, 0x03 }, + { OV9740_PLL_MULTIPLIER, 0x4c }, + { OV9740_VT_SYS_CLK_DIV, 0x01 }, + { OV9740_VT_PIX_CLK_DIV, 0x08 }, + { OV9740_PLL_CTRL3010, 0x01 }, + { OV9740_VFIFO_CTRL00, 0x82 }, + + /* Timing Setting */ + /* VTS */ + { OV9740_FRM_LENGTH_LN_HI, 0x03 }, + { OV9740_FRM_LENGTH_LN_LO, 0x07 }, + /* HTS */ + { OV9740_LN_LENGTH_PCK_HI, 0x06 }, + { OV9740_LN_LENGTH_PCK_LO, 0x62 }, + + /* MIPI Control */ + { OV9740_MIPI_CTRL00, 0x44 }, /* 0x64 for discontinuous clk */ + { OV9740_MIPI_3837, 0x01 }, + { OV9740_MIPI_CTRL01, 0x0f }, + { OV9740_MIPI_CTRL03, 0x05 }, + { OV9740_MIPI_CTRL05, 0x10 }, + { OV9740_VFIFO_RD_CTRL, 0x16 }, + { OV9740_MIPI_CTRL_3012, 0x70 }, + { OV9740_SC_CMMM_MIPI_CTR, 0x01 }, + + /* YUYV order */ + { OV9740_ISP_CTRL19, 0x02 }, +}; + +static u32 ov9740_codes[] = { + MEDIA_BUS_FMT_YUYV8_2X8, +}; + +/* read a register */ +static int ov9740_reg_read(struct i2c_client *client, u16 reg, u8 *val) +{ + int ret; + struct i2c_msg msg[] = { + { + .addr = client->addr, + .flags = 0, + .len = 2, + .buf = (u8 *)®, + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = 1, + .buf = val, + }, + }; + + reg = swab16(reg); + + ret = i2c_transfer(client->adapter, msg, 2); + if (ret < 0) { + dev_err(&client->dev, "Failed reading register 0x%04x!\n", reg); + return ret; + } + + return 0; +} + +/* write a register */ +static int ov9740_reg_write(struct i2c_client *client, u16 reg, u8 val) +{ + struct i2c_msg msg; + struct { + u16 reg; + u8 val; + } __packed buf; + int ret; + + reg = swab16(reg); + + buf.reg = reg; + buf.val = val; + + msg.addr = client->addr; + msg.flags = 0; + msg.len = 3; + msg.buf = (u8 *)&buf; + + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret < 0) { + dev_err(&client->dev, "Failed writing register 0x%04x!\n", reg); + return ret; + } + + return 0; +} + + +/* Read a register, alter its bits, write it back */ +static int ov9740_reg_rmw(struct i2c_client *client, u16 reg, u8 set, u8 unset) +{ + u8 val; + int ret; + + ret = ov9740_reg_read(client, reg, &val); + if (ret < 0) { + dev_err(&client->dev, + "[Read]-Modify-Write of register 0x%04x failed!\n", + reg); + return ret; + } + + val |= set; + val &= ~unset; + + ret = ov9740_reg_write(client, reg, val); + if (ret < 0) { + dev_err(&client->dev, + "Read-Modify-[Write] of register 0x%04x failed!\n", + reg); + return ret; + } + + return 0; +} + +static int ov9740_reg_write_array(struct i2c_client *client, + const struct ov9740_reg *regarray, + int regarraylen) +{ + int i; + int ret; + + for (i = 0; i < regarraylen; i++) { + ret = ov9740_reg_write(client, + regarray[i].reg, regarray[i].val); + if (ret < 0) + return ret; + } + + return 0; +} + +/* Start/Stop streaming from the device */ +static int ov9740_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov9740_priv *priv = to_ov9740(sd); + int ret; + + /* Program orientation register. */ + if (priv->flag_vflip) + ret = ov9740_reg_rmw(client, OV9740_IMAGE_ORT, 0x2, 0); + else + ret = ov9740_reg_rmw(client, OV9740_IMAGE_ORT, 0, 0x2); + if (ret < 0) + return ret; + + if (priv->flag_hflip) + ret = ov9740_reg_rmw(client, OV9740_IMAGE_ORT, 0x1, 0); + else + ret = ov9740_reg_rmw(client, OV9740_IMAGE_ORT, 0, 0x1); + if (ret < 0) + return ret; + + if (enable) { + dev_dbg(&client->dev, "Enabling Streaming\n"); + /* Start Streaming */ + ret = ov9740_reg_write(client, OV9740_MODE_SELECT, 0x01); + + } else { + dev_dbg(&client->dev, "Disabling Streaming\n"); + /* Software Reset */ + ret = ov9740_reg_write(client, OV9740_SOFTWARE_RESET, 0x01); + if (!ret) + /* Setting Streaming to Standby */ + ret = ov9740_reg_write(client, OV9740_MODE_SELECT, + 0x00); + } + + priv->current_enable = enable; + + return ret; +} + +/* select nearest higher resolution for capture */ +static void ov9740_res_roundup(u32 *width, u32 *height) +{ + /* Width must be a multiple of 4 pixels. */ + *width = ALIGN(*width, 4); + + /* Max resolution is 1280x720 (720p). */ + if (*width > OV9740_MAX_WIDTH) + *width = OV9740_MAX_WIDTH; + + if (*height > OV9740_MAX_HEIGHT) + *height = OV9740_MAX_HEIGHT; +} + +/* Setup registers according to resolution and color encoding */ +static int ov9740_set_res(struct i2c_client *client, u32 width, u32 height) +{ + u32 x_start; + u32 y_start; + u32 x_end; + u32 y_end; + bool scaling = false; + u32 scale_input_x; + u32 scale_input_y; + int ret; + + if ((width != OV9740_MAX_WIDTH) || (height != OV9740_MAX_HEIGHT)) + scaling = true; + + /* + * Try to use as much of the sensor area as possible when supporting + * smaller resolutions. Depending on the aspect ratio of the + * chosen resolution, we can either use the full width of the sensor, + * or the full height of the sensor (or both if the aspect ratio is + * the same as 1280x720. + */ + if ((OV9740_MAX_WIDTH * height) > (OV9740_MAX_HEIGHT * width)) { + scale_input_x = (OV9740_MAX_HEIGHT * width) / height; + scale_input_y = OV9740_MAX_HEIGHT; + } else { + scale_input_x = OV9740_MAX_WIDTH; + scale_input_y = (OV9740_MAX_WIDTH * height) / width; + } + + /* These describe the area of the sensor to use. */ + x_start = (OV9740_MAX_WIDTH - scale_input_x) / 2; + y_start = (OV9740_MAX_HEIGHT - scale_input_y) / 2; + x_end = x_start + scale_input_x - 1; + y_end = y_start + scale_input_y - 1; + + ret = ov9740_reg_write(client, OV9740_X_ADDR_START_HI, x_start >> 8); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_X_ADDR_START_LO, x_start & 0xff); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_Y_ADDR_START_HI, y_start >> 8); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_Y_ADDR_START_LO, y_start & 0xff); + if (ret) + goto done; + + ret = ov9740_reg_write(client, OV9740_X_ADDR_END_HI, x_end >> 8); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_X_ADDR_END_LO, x_end & 0xff); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_Y_ADDR_END_HI, y_end >> 8); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_Y_ADDR_END_LO, y_end & 0xff); + if (ret) + goto done; + + ret = ov9740_reg_write(client, OV9740_X_OUTPUT_SIZE_HI, width >> 8); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_X_OUTPUT_SIZE_LO, width & 0xff); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_Y_OUTPUT_SIZE_HI, height >> 8); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_Y_OUTPUT_SIZE_LO, height & 0xff); + if (ret) + goto done; + + ret = ov9740_reg_write(client, OV9740_ISP_CTRL1E, scale_input_x >> 8); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_ISP_CTRL1F, scale_input_x & 0xff); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_ISP_CTRL20, scale_input_y >> 8); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_ISP_CTRL21, scale_input_y & 0xff); + if (ret) + goto done; + + ret = ov9740_reg_write(client, OV9740_VFIFO_READ_START_HI, + (scale_input_x - width) >> 8); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_VFIFO_READ_START_LO, + (scale_input_x - width) & 0xff); + if (ret) + goto done; + + ret = ov9740_reg_write(client, OV9740_ISP_CTRL00, 0xff); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_ISP_CTRL01, 0xef | + (scaling << 4)); + if (ret) + goto done; + ret = ov9740_reg_write(client, OV9740_ISP_CTRL03, 0xff); + +done: + return ret; +} + +/* set the format we will capture in */ +static int ov9740_s_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov9740_priv *priv = to_ov9740(sd); + int ret; + + ret = ov9740_reg_write_array(client, ov9740_defaults, + ARRAY_SIZE(ov9740_defaults)); + if (ret < 0) + return ret; + + ret = ov9740_set_res(client, mf->width, mf->height); + if (ret < 0) + return ret; + + priv->current_mf = *mf; + return ret; +} + +static int ov9740_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *format) +{ + struct v4l2_mbus_framefmt *mf = &format->format; + + if (format->pad) + return -EINVAL; + + ov9740_res_roundup(&mf->width, &mf->height); + + mf->field = V4L2_FIELD_NONE; + mf->code = MEDIA_BUS_FMT_YUYV8_2X8; + mf->colorspace = V4L2_COLORSPACE_SRGB; + + if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) + return ov9740_s_fmt(sd, mf); + cfg->try_fmt = *mf; + return 0; +} + +static int ov9740_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->pad || code->index >= ARRAY_SIZE(ov9740_codes)) + return -EINVAL; + + code->code = ov9740_codes[code->index]; + + return 0; +} + +static int ov9740_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) + return -EINVAL; + + switch (sel->target) { + case V4L2_SEL_TGT_CROP_BOUNDS: + case V4L2_SEL_TGT_CROP_DEFAULT: + case V4L2_SEL_TGT_CROP: + sel->r.left = 0; + sel->r.top = 0; + sel->r.width = OV9740_MAX_WIDTH; + sel->r.height = OV9740_MAX_HEIGHT; + return 0; + default: + return -EINVAL; + } +} + +/* Set status of additional camera capabilities */ +static int ov9740_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct ov9740_priv *priv = + container_of(ctrl->handler, struct ov9740_priv, hdl); + + switch (ctrl->id) { + case V4L2_CID_VFLIP: + priv->flag_vflip = ctrl->val; + break; + case V4L2_CID_HFLIP: + priv->flag_hflip = ctrl->val; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int ov9740_s_power(struct v4l2_subdev *sd, int on) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + struct ov9740_priv *priv = to_ov9740(sd); + int ret; + + if (on) { + ret = soc_camera_power_on(&client->dev, ssdd, priv->clk); + if (ret < 0) + return ret; + + if (priv->current_enable) { + ov9740_s_fmt(sd, &priv->current_mf); + ov9740_s_stream(sd, 1); + } + } else { + if (priv->current_enable) { + ov9740_s_stream(sd, 0); + priv->current_enable = true; + } + + soc_camera_power_off(&client->dev, ssdd, priv->clk); + } + + return 0; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int ov9740_get_register(struct v4l2_subdev *sd, + struct v4l2_dbg_register *reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret; + u8 val; + + if (reg->reg & ~0xffff) + return -EINVAL; + + reg->size = 2; + + ret = ov9740_reg_read(client, reg->reg, &val); + if (ret) + return ret; + + reg->val = (__u64)val; + + return ret; +} + +static int ov9740_set_register(struct v4l2_subdev *sd, + const struct v4l2_dbg_register *reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + if (reg->reg & ~0xffff || reg->val & ~0xff) + return -EINVAL; + + return ov9740_reg_write(client, reg->reg, reg->val); +} +#endif + +static int ov9740_video_probe(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov9740_priv *priv = to_ov9740(sd); + u8 modelhi, modello; + int ret; + + ret = ov9740_s_power(&priv->subdev, 1); + if (ret < 0) + return ret; + + /* + * check and show product ID and manufacturer ID + */ + ret = ov9740_reg_read(client, OV9740_MODEL_ID_HI, &modelhi); + if (ret < 0) + goto done; + + ret = ov9740_reg_read(client, OV9740_MODEL_ID_LO, &modello); + if (ret < 0) + goto done; + + priv->model = (modelhi << 8) | modello; + + ret = ov9740_reg_read(client, OV9740_REVISION_NUMBER, &priv->revision); + if (ret < 0) + goto done; + + ret = ov9740_reg_read(client, OV9740_MANUFACTURER_ID, &priv->manid); + if (ret < 0) + goto done; + + ret = ov9740_reg_read(client, OV9740_SMIA_VERSION, &priv->smiaver); + if (ret < 0) + goto done; + + if (priv->model != 0x9740) { + ret = -ENODEV; + goto done; + } + + dev_info(&client->dev, "ov9740 Model ID 0x%04x, Revision 0x%02x, Manufacturer 0x%02x, SMIA Version 0x%02x\n", + priv->model, priv->revision, priv->manid, priv->smiaver); + + ret = v4l2_ctrl_handler_setup(&priv->hdl); + +done: + ov9740_s_power(&priv->subdev, 0); + return ret; +} + +/* Request bus settings on camera side */ +static int ov9740_g_mbus_config(struct v4l2_subdev *sd, + struct v4l2_mbus_config *cfg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + + cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER | + V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_HIGH | + V4L2_MBUS_DATA_ACTIVE_HIGH; + cfg->type = V4L2_MBUS_PARALLEL; + cfg->flags = soc_camera_apply_board_flags(ssdd, cfg); + + return 0; +} + +static const struct v4l2_subdev_video_ops ov9740_video_ops = { + .s_stream = ov9740_s_stream, + .g_mbus_config = ov9740_g_mbus_config, +}; + +static const struct v4l2_subdev_core_ops ov9740_core_ops = { + .s_power = ov9740_s_power, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .g_register = ov9740_get_register, + .s_register = ov9740_set_register, +#endif +}; + +static const struct v4l2_subdev_pad_ops ov9740_pad_ops = { + .enum_mbus_code = ov9740_enum_mbus_code, + .get_selection = ov9740_get_selection, + .set_fmt = ov9740_set_fmt, +}; + +static const struct v4l2_subdev_ops ov9740_subdev_ops = { + .core = &ov9740_core_ops, + .video = &ov9740_video_ops, + .pad = &ov9740_pad_ops, +}; + +static const struct v4l2_ctrl_ops ov9740_ctrl_ops = { + .s_ctrl = ov9740_s_ctrl, +}; + +/* + * i2c_driver function + */ +static int ov9740_probe(struct i2c_client *client, + const struct i2c_device_id *did) +{ + struct ov9740_priv *priv; + struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); + int ret; + + if (!ssdd) { + dev_err(&client->dev, "Missing platform_data for driver\n"); + return -EINVAL; + } + + priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + v4l2_i2c_subdev_init(&priv->subdev, client, &ov9740_subdev_ops); + v4l2_ctrl_handler_init(&priv->hdl, 13); + v4l2_ctrl_new_std(&priv->hdl, &ov9740_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 0); + v4l2_ctrl_new_std(&priv->hdl, &ov9740_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 0); + priv->subdev.ctrl_handler = &priv->hdl; + if (priv->hdl.error) + return priv->hdl.error; + + priv->clk = v4l2_clk_get(&client->dev, "mclk"); + if (IS_ERR(priv->clk)) { + ret = PTR_ERR(priv->clk); + goto eclkget; + } + + ret = ov9740_video_probe(client); + if (ret < 0) { + v4l2_clk_put(priv->clk); +eclkget: + v4l2_ctrl_handler_free(&priv->hdl); + } + + return ret; +} + +static int ov9740_remove(struct i2c_client *client) +{ + struct ov9740_priv *priv = i2c_get_clientdata(client); + + v4l2_clk_put(priv->clk); + v4l2_device_unregister_subdev(&priv->subdev); + v4l2_ctrl_handler_free(&priv->hdl); + return 0; +} + +static const struct i2c_device_id ov9740_id[] = { + { "ov9740", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ov9740_id); + +static struct i2c_driver ov9740_i2c_driver = { + .driver = { + .name = "ov9740", + }, + .probe = ov9740_probe, + .remove = ov9740_remove, + .id_table = ov9740_id, +}; + +module_i2c_driver(ov9740_i2c_driver); + +MODULE_DESCRIPTION("SoC Camera driver for OmniVision OV9740"); +MODULE_AUTHOR("Andrew Chew <achew@nvidia.com>"); +MODULE_LICENSE("GPL v2"); |