--- /dev/null
+/*
+ * 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 <media/v4l2-chip-ident.h>
+#include <media/soc_camera.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_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
+
+/* supported resolutions */
+enum {
+ OV9740_VGA,
+ OV9740_720P,
+};
+
+struct ov9740_resolution {
+ unsigned int width;
+ unsigned int height;
+};
+
+static struct ov9740_resolution ov9740_resolutions[] = {
+ [OV9740_VGA] = {
+ .width = 640,
+ .height = 480,
+ },
+ [OV9740_720P] = {
+ .width = 1280,
+ .height = 720,
+ },
+};
+
+/* Misc. structures */
+struct ov9740_reg {
+ u16 reg;
+ u8 val;
+};
+
+struct ov9740_priv {
+ struct v4l2_subdev subdev;
+
+ int ident;
+ u16 model;
+ u8 revision;
+ u8 manid;
+ u8 smiaver;
+
+ bool flag_vflip;
+ bool flag_hflip;
+};
+
+static const struct ov9740_reg ov9740_defaults[] = {
+ /* 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 },
+
+ /* 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 },
+ { 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 },
+};
+
+static const struct ov9740_reg ov9740_regs_vga[] = {
+ { OV9740_X_ADDR_START_HI, 0x00 },
+ { OV9740_X_ADDR_START_LO, 0xa0 },
+ { OV9740_Y_ADDR_START_HI, 0x00 },
+ { OV9740_Y_ADDR_START_LO, 0x00 },
+ { OV9740_X_ADDR_END_HI, 0x04 },
+ { OV9740_X_ADDR_END_LO, 0x63 },
+ { OV9740_Y_ADDR_END_HI, 0x02 },
+ { OV9740_Y_ADDR_END_LO, 0xd3 },
+ { OV9740_X_OUTPUT_SIZE_HI, 0x02 },
+ { OV9740_X_OUTPUT_SIZE_LO, 0x80 },
+ { OV9740_Y_OUTPUT_SIZE_HI, 0x01 },
+ { OV9740_Y_OUTPUT_SIZE_LO, 0xe0 },
+ { OV9740_ISP_CTRL1E, 0x03 },
+ { OV9740_ISP_CTRL1F, 0xc0 },
+ { OV9740_ISP_CTRL20, 0x02 },
+ { OV9740_ISP_CTRL21, 0xd0 },
+ { OV9740_VFIFO_READ_START_HI, 0x01 },
+ { OV9740_VFIFO_READ_START_LO, 0x40 },
+ { OV9740_ISP_CTRL00, 0xff },
+ { OV9740_ISP_CTRL01, 0xff },
+ { OV9740_ISP_CTRL03, 0xff },
+};
+
+static const struct ov9740_reg ov9740_regs_720p[] = {
+ { OV9740_X_ADDR_START_HI, 0x00 },
+ { OV9740_X_ADDR_START_LO, 0x00 },
+ { OV9740_Y_ADDR_START_HI, 0x00 },
+ { OV9740_Y_ADDR_START_LO, 0x00 },
+ { OV9740_X_ADDR_END_HI, 0x05 },
+ { OV9740_X_ADDR_END_LO, 0x03 },
+ { OV9740_Y_ADDR_END_HI, 0x02 },
+ { OV9740_Y_ADDR_END_LO, 0xd3 },
+ { OV9740_X_OUTPUT_SIZE_HI, 0x05 },
+ { OV9740_X_OUTPUT_SIZE_LO, 0x00 },
+ { OV9740_Y_OUTPUT_SIZE_HI, 0x02 },
+ { OV9740_Y_OUTPUT_SIZE_LO, 0xd0 },
+ { OV9740_ISP_CTRL1E, 0x05 },
+ { OV9740_ISP_CTRL1F, 0x00 },
+ { OV9740_ISP_CTRL20, 0x02 },
+ { OV9740_ISP_CTRL21, 0xd0 },
+ { OV9740_VFIFO_READ_START_HI, 0x02 },
+ { OV9740_VFIFO_READ_START_LO, 0x30 },
+ { OV9740_ISP_CTRL00, 0xff },
+ { OV9740_ISP_CTRL01, 0xef },
+ { OV9740_ISP_CTRL03, 0xff },
+};
+
+static enum v4l2_mbus_pixelcode ov9740_codes[] = {
+ V4L2_MBUS_FMT_YUYV8_2X8,
+};
+
+static const struct v4l2_queryctrl ov9740_controls[] = {
+ {
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Flip Vertically",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Flip Horizontally",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+};
+
+/* 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 %02x 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 %02x 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);
+ }
+
+ return ret;
+}
+
+/* Alter bus settings on camera side */
+static int ov9740_set_bus_param(struct soc_camera_device *icd,
+ unsigned long flags)
+{
+ return 0;
+}
+
+/* Request bus settings on camera side */
+static unsigned long ov9740_query_bus_param(struct soc_camera_device *icd)
+{
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
+
+ unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
+ SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
+ SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
+
+ return soc_camera_apply_sensor_flags(icl, flags);
+}
+
+/* Get status of additional camera capabilities */
+static int ov9740_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct ov9740_priv *priv = to_ov9740(sd);
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ ctrl->value = priv->flag_vflip;
+ break;
+ case V4L2_CID_HFLIP:
+ ctrl->value = priv->flag_hflip;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* Set status of additional camera capabilities */
+static int ov9740_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct ov9740_priv *priv = to_ov9740(sd);
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ priv->flag_vflip = ctrl->value;
+ break;
+ case V4L2_CID_HFLIP:
+ priv->flag_hflip = ctrl->value;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* Get chip identification */
+static int ov9740_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *id)
+{
+ struct ov9740_priv *priv = to_ov9740(sd);
+
+ id->ident = priv->ident;
+ id->revision = priv->revision;
+
+ 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,
+ 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
+
+/* select nearest higher resolution for capture */
+static void ov9740_res_roundup(u32 *width, u32 *height)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ov9740_resolutions); i++)
+ if ((ov9740_resolutions[i].width >= *width) &&
+ (ov9740_resolutions[i].height >= *height)) {
+ *width = ov9740_resolutions[i].width;
+ *height = ov9740_resolutions[i].height;
+ return;
+ }
+
+ *width = ov9740_resolutions[OV9740_720P].width;
+ *height = ov9740_resolutions[OV9740_720P].height;
+}
+
+/* Setup registers according to resolution and color encoding */
+static int ov9740_set_res(struct i2c_client *client, u32 width)
+{
+ int ret;
+
+ /* select register configuration for given resolution */
+ if (width == ov9740_resolutions[OV9740_VGA].width) {
+ dev_dbg(&client->dev, "Setting image size to 640x480\n");
+ ret = ov9740_reg_write_array(client, ov9740_regs_vga,
+ ARRAY_SIZE(ov9740_regs_vga));
+ } else if (width == ov9740_resolutions[OV9740_720P].width) {
+ dev_dbg(&client->dev, "Setting image size to 1280x720\n");
+ ret = ov9740_reg_write_array(client, ov9740_regs_720p,
+ ARRAY_SIZE(ov9740_regs_720p));
+ } else {
+ dev_err(&client->dev, "Failed to select resolution!\n");
+ return -EINVAL;
+ }
+
+ 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);
+ enum v4l2_colorspace cspace;
+ enum v4l2_mbus_pixelcode code = mf->code;
+ int ret;
+
+ ov9740_res_roundup(&mf->width, &mf->height);
+
+ switch (code) {
+ case V4L2_MBUS_FMT_YUYV8_2X8:
+ cspace = V4L2_COLORSPACE_SRGB;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = ov9740_reg_write_array(client, ov9740_defaults,
+ ARRAY_SIZE(ov9740_defaults));
+ if (ret < 0)
+ return ret;
+
+ ret = ov9740_set_res(client, mf->width);
+ if (ret < 0)
+ return ret;
+
+ mf->code = code;
+ mf->colorspace = cspace;
+
+ return ret;
+}
+
+static int ov9740_try_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ ov9740_res_roundup(&mf->width, &mf->height);
+
+ mf->field = V4L2_FIELD_NONE;
+ mf->code = V4L2_MBUS_FMT_YUYV8_2X8;
+ mf->colorspace = V4L2_COLORSPACE_SRGB;
+
+ return 0;
+}
+
+static int ov9740_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
+ enum v4l2_mbus_pixelcode *code)
+{
+ if (index >= ARRAY_SIZE(ov9740_codes))
+ return -EINVAL;
+
+ *code = ov9740_codes[index];
+
+ return 0;
+}
+
+static int ov9740_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
+{
+ a->bounds.left = 0;
+ a->bounds.top = 0;
+ a->bounds.width = ov9740_resolutions[OV9740_720P].width;
+ a->bounds.height = ov9740_resolutions[OV9740_720P].height;
+ a->defrect = a->bounds;
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ a->pixelaspect.numerator = 1;
+ a->pixelaspect.denominator = 1;
+
+ return 0;
+}
+
+static int ov9740_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
+{
+ a->c.left = 0;
+ a->c.top = 0;
+ a->c.width = ov9740_resolutions[OV9740_720P].width;
+ a->c.height = ov9740_resolutions[OV9740_720P].height;
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ return 0;
+}
+
+static int ov9740_video_probe(struct soc_camera_device *icd,
+ struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov9740_priv *priv = to_ov9740(sd);
+ u8 modelhi, modello;
+ int ret;
+
+ /*
+ * We must have a parent by now. And it cannot be a wrong one.
+ * So this entire test is completely redundant.
+ */
+ if (!icd->dev.parent ||
+ to_soc_camera_host(icd->dev.parent)->nr != icd->iface) {
+ dev_err(&client->dev, "Parent missing or invalid!\n");
+ ret = -ENODEV;
+ goto err;
+ }
+
+ /*
+ * check and show product ID and manufacturer ID
+ */
+ ret = ov9740_reg_read(client, OV9740_MODEL_ID_HI, &modelhi);
+ if (ret < 0)
+ goto err;
+
+ ret = ov9740_reg_read(client, OV9740_MODEL_ID_LO, &modello);
+ if (ret < 0)
+ goto err;
+
+ priv->model = (modelhi << 8) | modello;
+
+ ret = ov9740_reg_read(client, OV9740_REVISION_NUMBER, &priv->revision);
+ if (ret < 0)
+ goto err;
+
+ ret = ov9740_reg_read(client, OV9740_MANUFACTURER_ID, &priv->manid);
+ if (ret < 0)
+ goto err;
+
+ ret = ov9740_reg_read(client, OV9740_SMIA_VERSION, &priv->smiaver);
+ if (ret < 0)
+ goto err;
+
+ if (priv->model != 0x9740) {
+ ret = -ENODEV;
+ goto err;
+ }
+
+ priv->ident = V4L2_IDENT_OV9740;
+
+ 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);
+
+err:
+ return ret;
+}
+
+static struct soc_camera_ops ov9740_ops = {
+ .set_bus_param = ov9740_set_bus_param,
+ .query_bus_param = ov9740_query_bus_param,
+ .controls = ov9740_controls,
+ .num_controls = ARRAY_SIZE(ov9740_controls),
+};
+
+static struct v4l2_subdev_core_ops ov9740_core_ops = {
+ .g_ctrl = ov9740_g_ctrl,
+ .s_ctrl = ov9740_s_ctrl,
+ .g_chip_ident = ov9740_g_chip_ident,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = ov9740_get_register,
+ .s_register = ov9740_set_register,
+#endif
+
+};
+
+static struct v4l2_subdev_video_ops ov9740_video_ops = {
+ .s_stream = ov9740_s_stream,
+ .s_mbus_fmt = ov9740_s_fmt,
+ .try_mbus_fmt = ov9740_try_fmt,
+ .enum_mbus_fmt = ov9740_enum_fmt,
+ .cropcap = ov9740_cropcap,
+ .g_crop = ov9740_g_crop,
+};
+
+static struct v4l2_subdev_ops ov9740_subdev_ops = {
+ .core = &ov9740_core_ops,
+ .video = &ov9740_video_ops,
+};
+
+/*
+ * i2c_driver function
+ */
+static int ov9740_probe(struct i2c_client *client,
+ const struct i2c_device_id *did)
+{
+ struct ov9740_priv *priv;
+ struct soc_camera_device *icd = client->dev.platform_data;
+ struct soc_camera_link *icl;
+ int ret;
+
+ if (!icd) {
+ dev_err(&client->dev, "Missing soc-camera data!\n");
+ return -EINVAL;
+ }
+
+ icl = to_soc_camera_link(icd);
+ if (!icl) {
+ dev_err(&client->dev, "Missing platform_data for driver\n");
+ return -EINVAL;
+ }
+
+ priv = kzalloc(sizeof(struct ov9740_priv), GFP_KERNEL);
+ if (!priv) {
+ dev_err(&client->dev, "Failed to allocate private data!\n");
+ return -ENOMEM;
+ }
+
+ v4l2_i2c_subdev_init(&priv->subdev, client, &ov9740_subdev_ops);
+
+ icd->ops = &ov9740_ops;
+
+ ret = ov9740_video_probe(icd, client);
+ if (ret < 0) {
+ icd->ops = NULL;
+ kfree(priv);
+ }
+
+ return ret;
+}
+
+static int ov9740_remove(struct i2c_client *client)
+{
+ struct ov9740_priv *priv = i2c_get_clientdata(client);
+
+ kfree(priv);
+
+ 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,
+};
+
+static int __init ov9740_module_init(void)
+{
+ return i2c_add_driver(&ov9740_i2c_driver);
+}
+
+static void __exit ov9740_module_exit(void)
+{
+ i2c_del_driver(&ov9740_i2c_driver);
+}
+
+module_init(ov9740_module_init);
+module_exit(ov9740_module_exit);
+
+MODULE_DESCRIPTION("SoC Camera driver for OmniVision OV9740");
+MODULE_AUTHOR("Andrew Chew <achew@nvidia.com>");
+MODULE_LICENSE("GPL v2");
projects / firefly-linux-kernel-4.4.55.git / commitdiff