Add an I2C/v4l2-subdev driver for Siliconfile SR030PC30 VGA
camera sensor with Image Signal Processor. SR030PC30 is
the low resolution camera sensor on Samsung Aquila boards.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
Hello,
this patch is a second version of I2C/v4l2-subdev driver for SR030PC30
camera sensor from SiliconFile. It has undergone significant refactoring
comparing to the first version. I am not planning any more extensive changes
like this for this driver. The driver has been tested with s5p-fimc bridge
interface on Aquila boards. Some features which are also available in the bridge
interface are not exported through subdev operation, e.g. cropping or flipping.
Changes since v1:
- corrected include paths
- improved/refactored v4l2 controls handling (white balance, manual exposure)
- single array used for all base configuration registers
Regards,
Sylwester Nawrocki
---
drivers/media/video/Kconfig | 6 +
drivers/media/video/Makefile | 1 +
drivers/media/video/sr030pc30.c | 893 +++++++++++++++++++++++++++++++++++++++
include/media/sr030pc30.h | 21 +
4 files changed, 921 insertions(+), 0 deletions(-)
create mode 100644 drivers/media/video/sr030pc30.c
create mode 100644 include/media/sr030pc30.h
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 75404fc..ffa3a27 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -706,6 +706,12 @@ config VIDEO_CAFE_CCIC
CMOS camera controller. This is the controller found on first-
generation OLPC systems.
+config VIDEO_SR030PC30
+ tristate "SR030PC30 VGA camera sensor support"
+ depends on I2C && VIDEO_V4L2
+ ---help---
+ This driver supports SR030PC30 VGA camera from Siliconfile
+
config SOC_CAMERA
tristate "SoC camera support"
depends on VIDEO_V4L2 && HAS_DMA && I2C
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index 118196c..e239b0a 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -71,6 +71,7 @@ obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o
obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
obj-$(CONFIG_VIDEO_MT9V011) += mt9v011.o
+obj-$(CONFIG_VIDEO_SR030PC30) += sr030pc30.o
obj-$(CONFIG_SOC_CAMERA_MT9M001) += mt9m001.o
obj-$(CONFIG_SOC_CAMERA_MT9M111) += mt9m111.o
diff --git a/drivers/media/video/sr030pc30.c b/drivers/media/video/sr030pc30.c
new file mode 100644
index 0000000..9f29da0
--- /dev/null
+++ b/drivers/media/video/sr030pc30.c
@@ -0,0 +1,893 @@
+/*
+ * Driver for SiliconFile SR030PC30 VGA (1/10-Inch) Image Sensor with ISP
+ *
+ * Copyright (C) 2010 Samsung Electronics Co., Ltd
+ * Author: Sylwester Nawrocki, s.nawrocki@xxxxxxxxxxx
+ *
+ * Based on original driver authored by Dongsoo Nathaniel Kim
+ * and HeungJun Kim <riverful.kim@xxxxxxxxxxx>.
+ *
+ * Based on mt9v011 Micron Digital Image Sensor driver
+ * Copyright (c) 2009 Mauro Carvalho Chehab (mchehab@xxxxxxxxxx)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+#include <media/v4l2-mediabus.h>
+#include <media/sr030pc30.h>
+
+static int debug;
+module_param(debug, int, 0644);
+
+#define MODULE_NAME "SR030PC30"
+
+/*
+ * Register offsets within a page
+ * b15..b8 - page id, b7..b0 - register address
+ */
+#define POWER_CTRL_REG 0x0001
+#define PAGEMODE_REG 0x03
+#define DEVICE_ID_REG 0x0004
+#define NOON010PC30_ID 0x86
+#define SR030PC30_ID 0x8C
+#define VDO_CTL1_REG 0x0010
+#define SUBSAMPL_NONE_VGA 0
+#define SUBSAMPL_QVGA 0x10
+#define SUBSAMPL_QQVGA 0x20
+#define VDO_CTL2_REG 0x0011
+#define SYNC_CTL_REG 0x0012
+#define WIN_ROWH_REG 0x0020
+#define WIN_ROWL_REG 0x0021
+#define WIN_COLH_REG 0x0022
+#define WIN_COLL_REG 0x0023
+#define WIN_HEIGHTH_REG 0x0024
+#define WIN_HEIGHTL_REG 0x0025
+#define WIN_WIDTHH_REG 0x0026
+#define WIN_WIDTHL_REG 0x0027
+#define HBLANKH_REG 0x0040
+#define HBLANKL_REG 0x0041
+#define VSYNCH_REG 0x0042
+#define VSYNCL_REG 0x0043
+/* page 10 */
+#define ISP_CTL_REG(n) (0x1010 + (n))
+#define YOFS_REG 0x1040
+#define DARK_YOFS_REG 0x1041
+#define AG_ABRTH_REG 0x1050
+#define SAT_CTL_REG 0x1060
+#define BSAT_REG 0x1061
+#define RSAT_REG 0x1062
+#define AG_SAT_TH_REG 0x1063
+/* page 11 */
+#define ZLPF_CTRL_REG 0x1110
+#define ZLPF_CTRL2_REG 0x1112
+#define ZLPF_AGH_THR_REG 0x1121
+#define ZLPF_THR_REG 0x1160
+#define ZLPF_DYN_THR_REG 0x1160
+/* page 12 */
+#define YCLPF_CTL1_REG 0x1240
+#define YCLPF_CTL2_REG 0x1241
+#define YCLPF_THR_REG 0x1250
+#define BLPF_CTL_REG 0x1270
+#define BLPF_THR1_REG 0x1274
+#define BLPF_THR2_REG 0x1275
+/* page 14 - Lens Shading Compensation */
+#define LENS_CTRL_REG 0x1410
+#define LENS_XCEN_REG 0x1420
+#define LENS_YCEN_REG 0x1421
+#define LENS_R_COMP_REG 0x1422
+#define LENS_G_COMP_REG 0x1423
+#define LENS_B_COMP_REG 0x1424
+/* page 15 - Color correction */
+#define CMC_CTL_REG 0x1510
+#define CMC_OFSGH_REG 0x1514
+#define CMC_OFSGL_REG 0x1516
+#define CMC_SIGN_REG 0x1517
+/* Color correction coefficients */
+#define CMC_COEF_REG(n) (0x1530 + (n))
+/* Color correction offset coefficients */
+#define CMC_OFS_REG(n) (0x1540 + (n))
+/* page 16 - Gamma correction */
+#define GMA_CTL_REG 0x1610
+/* Gamma correction coefficients 0.14 */
+#define GMA_COEF_REG(n) (0x1630 + (n))
+/* page 20 - Auto Exposure */
+#define AE_CTL1_REG 0x2010
+#define AE_CTL2_REG 0x2011
+#define AE_FRM_CTL_REG 0x2020
+#define AE_FINE_CTL_REG(n) (0x2028 + (n))
+#define EXP_TIMEH_REG 0x2083
+#define EXP_TIMEM_REG 0x2084
+#define EXP_TIMEL_REG 0x2085
+#define EXP_MMINH_REG 0x2086
+#define EXP_MMINL_REG 0x2087
+#define EXP_MMAXH_REG 0x2088
+#define EXP_MMAXM_REG 0x2089
+#define EXP_MMAXL_REG 0x208A
+/* page 22 - Auto White Balance */
+#define AWB_CTL1_REG 0x2210
+#define AWB_ENABLE 0x80
+#define AWB_CTL2_REG 0x2211
+#define MWB_ENABLE 0x01
+/* RGB gain control (manual WB) when AWB_CTL1[7]=0 */
+#define AWB_RGAIN_REG 0x2280
+#define AWB_GGAIN_REG 0x2281
+#define AWB_BGAIN_REG 0x2282
+#define AWB_RMAX_REG 0x2283
+#define AWB_RMIN_REG 0x2284
+#define AWB_BMAX_REG 0x2285
+#define AWB_BMIN_REG 0x2286
+/* R, B gain range in bright light conditions */
+#define AWB_RMAXB_REG 0x2287
+#define AWB_RMINB_REG 0x2288
+#define AWB_BMAXB_REG 0x2289
+#define AWB_BMINB_REG 0x228A
+/* manual white balance, when AWB_CTL2[0]=1 */
+#define MWB_RGAIN_REG 0x22B2
+#define MWB_BGAIN_REG 0x22B3
+/* the token to mark an array end */
+#define REG_TERM 0xFFFF
+
+/* Minimum and maximum exposure time in ms */
+#define EXPOS_MIN_MS 1
+#define EXPOS_MAX_MS 125
+
+struct sr030pc30_info {
+ struct v4l2_subdev sd;
+ const struct sr030pc30_platform_data *pdata;
+ const struct sr030pc30_format *curr_fmt;
+ const struct sr030pc30_frmsize *curr_win;
+ unsigned int auto_wb:1;
+ unsigned int auto_exp:1;
+ unsigned int hflip:1;
+ unsigned int vflip:1;
+ unsigned int sleep:1;
+ unsigned int exposure;
+ u8 blue_balance;
+ u8 red_balance;
+ u8 i2c_reg_page;
+};
+
+struct sr030pc30_format {
+ enum v4l2_mbus_pixelcode code;
+ enum v4l2_colorspace colorspace;
+ u16 ispctl1_reg;
+};
+
+struct sr030pc30_frmsize {
+ u16 width;
+ u16 height;
+ int vid_ctl1;
+};
+
+struct i2c_regval {
+ u16 addr;
+ u16 val;
+};
+
+static const struct v4l2_queryctrl sr030pc30_ctrl[] = {
+ {
+ .id = V4L2_CID_AUTO_WHITE_BALANCE,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Auto White Balance",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ }, {
+ .id = V4L2_CID_RED_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Red Balance",
+ .minimum = 0,
+ .maximum = 127,
+ .step = 1,
+ .default_value = 64,
+ .flags = 0,
+ }, {
+ .id = V4L2_CID_BLUE_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Blue Balance",
+ .minimum = 0,
+ .maximum = 127,
+ .step = 1,
+ .default_value = 64,
+ }, {
+ .id = V4L2_CID_EXPOSURE_AUTO,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Auto Exposure",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ }, {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Exposure",
+ .minimum = EXPOS_MIN_MS,
+ .maximum = EXPOS_MAX_MS,
+ .step = 1,
+ .default_value = 1,
+ }, {
+ }
+};
+
+/* supported resolutions */
+static const struct sr030pc30_frmsize sr030pc30_sizes[] = {
+ {
+ .width = 640,
+ .height = 480,
+ .vid_ctl1 = SUBSAMPL_NONE_VGA,
+ }, {
+ .width = 320,
+ .height = 240,
+ .vid_ctl1 = SUBSAMPL_QVGA,
+ }, {
+ .width = 160,
+ .height = 120,
+ .vid_ctl1 = SUBSAMPL_QQVGA,
+ },
+};
+
+/* supported pixel formats */
+static const struct sr030pc30_format sr030pc30_formats[] = {
+ {
+ .code = V4L2_MBUS_FMT_YUYV8_2X8,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .ispctl1_reg = 0x03,
+ }, {
+ .code = V4L2_MBUS_FMT_YVYU8_2X8,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .ispctl1_reg = 0x02,
+ }, {
+ .code = V4L2_MBUS_FMT_VYUY8_2X8,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .ispctl1_reg = 0,
+ }, {
+ .code = V4L2_MBUS_FMT_UYVY8_2X8,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .ispctl1_reg = 0x01,
+ }, {
+ .code = V4L2_MBUS_FMT_RGB565_2X8_BE,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .ispctl1_reg = 0x40,
+ },
+};
+
+static const struct i2c_regval sr030pc30_base_regs[] = {
+ /* Window size and position within pixel matrix */
+ { WIN_ROWH_REG, 0x00 }, { WIN_ROWL_REG, 0x06 },
+ { WIN_COLH_REG, 0x00 }, { WIN_COLL_REG, 0x06 },
+ { WIN_HEIGHTH_REG, 0x01 }, { WIN_HEIGHTL_REG, 0xE0 },
+ { WIN_WIDTHH_REG, 0x02 }, { WIN_WIDTHL_REG, 0x80 },
+ { HBLANKH_REG, 0x01 }, { HBLANKL_REG, 0x50 },
+ { VSYNCH_REG, 0x00 }, { VSYNCL_REG, 0x14 },
+ { SYNC_CTL_REG, 0 },
+ /* Color corection and saturation */
+ { ISP_CTL_REG(0), 0x30 }, { YOFS_REG, 0x80 },
+ { DARK_YOFS_REG, 0x04 }, { AG_ABRTH_REG, 0x78 },
+ { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 },
+ { AG_SAT_TH_REG, 0xF0 }, { 0x1064, 0x80 },
+ { CMC_CTL_REG, 0x03 }, { CMC_OFSGH_REG, 0x3C },
+ { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x2F },
+ { CMC_COEF_REG(0), 0xCB }, { CMC_OFS_REG(0), 0x87 },
+ { CMC_COEF_REG(1), 0x61 }, { CMC_OFS_REG(1), 0x18 },
+ { CMC_COEF_REG(2), 0x16 }, { CMC_OFS_REG(2), 0x91 },
+ { CMC_COEF_REG(3), 0x23 }, { CMC_OFS_REG(3), 0x94 },
+ { CMC_COEF_REG(4), 0xCE }, { CMC_OFS_REG(4), 0x9f },
+ { CMC_COEF_REG(5), 0x2B }, { CMC_OFS_REG(5), 0x33 },
+ { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x00 },
+ { CMC_COEF_REG(7), 0x34 }, { CMC_OFS_REG(7), 0x94 },
+ { CMC_COEF_REG(8), 0x75 }, { CMC_OFS_REG(8), 0x14 },
+ /* Color corection coefficients */
+ { GMA_CTL_REG, 0x03 }, { GMA_COEF_REG(0), 0x00 },
+ { GMA_COEF_REG(1), 0x19 }, { GMA_COEF_REG(2), 0x26 },
+ { GMA_COEF_REG(3), 0x3B }, { GMA_COEF_REG(4), 0x5D },
+ { GMA_COEF_REG(5), 0x79 }, { GMA_COEF_REG(6), 0x8E },
+ { GMA_COEF_REG(7), 0x9F }, { GMA_COEF_REG(8), 0xAF },
+ { GMA_COEF_REG(9), 0xBD }, { GMA_COEF_REG(10), 0xCA },
+ { GMA_COEF_REG(11), 0xDD }, { GMA_COEF_REG(12), 0xEC },
+ { GMA_COEF_REG(13), 0xF7 }, { GMA_COEF_REG(14), 0xFF },
+ /* Noise reduction, Z-LPF, YC-LPF and BLPF filters setup */
+ { ZLPF_CTRL_REG, 0x99 }, { ZLPF_CTRL2_REG, 0x0E },
+ { ZLPF_AGH_THR_REG, 0x29 }, { ZLPF_THR_REG, 0x0F },
+ { ZLPF_DYN_THR_REG, 0x63 }, { YCLPF_CTL1_REG, 0x23 },
+ { YCLPF_CTL2_REG, 0x3B }, { YCLPF_THR_REG, 0x05 },
+ { BLPF_CTL_REG, 0x1D }, { BLPF_THR1_REG, 0x05 },
+ { BLPF_THR2_REG, 0x04 },
+ /* Automatic white balance */
+ { AWB_CTL1_REG, 0xFB }, { AWB_CTL2_REG, 0x26 },
+ { AWB_RMAX_REG, 0x54 }, { AWB_RMIN_REG, 0x2B },
+ { AWB_BMAX_REG, 0x57 }, { AWB_BMIN_REG, 0x29 },
+ { AWB_RMAXB_REG, 0x50 }, { AWB_RMINB_REG, 0x43 },
+ { AWB_BMAXB_REG, 0x30 }, { AWB_BMINB_REG, 0x22 },
+ /* Auto exposure */
+ { AE_CTL1_REG, 0x8C }, { AE_CTL2_REG, 0x04 },
+ { AE_FRM_CTL_REG, 0x01 }, { AE_FINE_CTL_REG(0), 0x3F },
+ { AE_FINE_CTL_REG(1), 0xA3 }, { AE_FINE_CTL_REG(3), 0x34 },
+ /* Lens shading compensation */
+ { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 },
+ { LENS_YCEN_REG, 0x70 }, { LENS_R_COMP_REG, 0x53 },
+ { LENS_G_COMP_REG, 0x40 }, { LENS_B_COMP_REG, 0x3e },
+ { REG_TERM, 0 },
+};
+
+static inline struct sr030pc30_info *to_sr030pc30(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct sr030pc30_info, sd);
+}
+
+static inline int set_i2c_page(struct sr030pc30_info *info,
+ struct i2c_client *client, unsigned int reg)
+{
+ int ret;
+ u32 page = reg >> 8 & 0xFF;
+
+ if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) {
+ ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page);
+ if (!ret)
+ info->i2c_reg_page = page;
+ }
+ return ret;
+}
+
+static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+
+ int ret = set_i2c_page(info, client, reg_addr);
+ if (!ret)
+ ret = i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
+ return ret;
+}
+
+static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+
+ int ret = set_i2c_page(info, client, reg_addr);
+ if (!ret)
+ ret = i2c_smbus_write_byte_data(
+ client, reg_addr & 0xFF, val);
+ return ret;
+}
+
+static inline int sr030pc30_bulk_write_reg(struct v4l2_subdev *sd,
+ const struct i2c_regval *msg)
+{
+ while (msg->addr != REG_TERM) {
+ int ret = cam_i2c_write(sd, msg->addr, msg->val);
+ if (ret)
+ return ret;
+ msg++;
+ }
+ return 0;
+}
+
+/* Device reset and sleep mode control */
+static int sr030pc30_pwr_ctrl(struct v4l2_subdev *sd,
+ bool reset, bool sleep)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+ u8 reg = sleep ? 0xF1 : 0xF0;
+ int ret = 0;
+
+ if (reset)
+ ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02);
+ if (!ret) {
+ ret = cam_i2c_write(sd, POWER_CTRL_REG, reg);
+ if (!ret) {
+ info->sleep = sleep;
+ if (reset)
+ info->i2c_reg_page = -1;
+ }
+ }
+ return ret;
+}
+
+static inline int sr030pc30_enable_autoexposure(struct v4l2_subdev *sd, int on)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+ /* auto anti-flicker is also enabled here */
+ int ret = cam_i2c_write(sd, AE_CTL1_REG, on ? 0xDC : 0x0C);
+ if (!ret)
+ info->auto_exp = on;
+ return ret;
+}
+
+static int sr030pc30_set_exposure(struct v4l2_subdev *sd, int value)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+
+ unsigned long expos = value * info->pdata->clk_rate / (8 * 1000);
+
+ int ret = cam_i2c_write(sd, EXP_TIMEH_REG, expos >> 16 & 0xFF);
+ if (!ret)
+ ret = cam_i2c_write(sd, EXP_TIMEM_REG, expos >> 8 & 0xFF);
+ if (!ret)
+ ret = cam_i2c_write(sd, EXP_TIMEL_REG, expos & 0xFF);
+ if (!ret) { /* Turn off AE */
+ info->exposure = value;
+ ret = sr030pc30_enable_autoexposure(sd, 0);
+ }
+ return ret;
+}
+
+/* Automatic white balance control */
+static int sr030pc30_enable_autowhitebalance(struct v4l2_subdev *sd, int on)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+
+ int ret = cam_i2c_write(sd, AWB_CTL2_REG, on ? 0x2E : 0x2F);
+ if (!ret)
+ ret = cam_i2c_write(sd, AWB_CTL1_REG, on ? 0xFB: 0x7B);
+ if (!ret)
+ info->auto_wb = on;
+
+ return ret;
+}
+
+static int sr030pc30_set_flip(struct v4l2_subdev *sd)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+
+ s32 reg = cam_i2c_read(sd, VDO_CTL2_REG);
+ if (reg < 0)
+ return reg;
+
+ reg &= 0x7C;
+ if (info->hflip)
+ reg |= 0x01;
+ if (info->vflip)
+ reg |= 0x02;
+ return cam_i2c_write(sd, VDO_CTL2_REG, reg | 0x80);
+}
+
+/* Configure resolution, color format and image flip */
+static int sr030pc30_set_params(struct v4l2_subdev *sd)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+ int ret;
+
+ if (!info->curr_win)
+ return -EINVAL;
+
+ /* Configure the resolution through subsampling */
+ ret = cam_i2c_write(sd, VDO_CTL1_REG,
+ info->curr_win->vid_ctl1);
+
+ if (!ret && info->curr_fmt)
+ ret = cam_i2c_write(sd, ISP_CTL_REG(0),
+ info->curr_fmt->ispctl1_reg);
+ if (!ret)
+ ret = sr030pc30_set_flip(sd);
+
+ return ret;
+}
+
+/* Find nearest matching image pixel size. */
+static int sr030pc30_try_frame_size(struct v4l2_mbus_framefmt *mf)
+{
+ unsigned int min_err = ~0;
+ int i = ARRAY_SIZE(sr030pc30_sizes);
+ const struct sr030pc30_frmsize *fsize = &sr030pc30_sizes[0],
+ *match = NULL;
+ while (i--) {
+ int err = abs(fsize->width - mf->width)
+ + abs(fsize->height - mf->height);
+ if (err < min_err) {
+ min_err = err;
+ match = fsize;
+ }
+ fsize++;
+ }
+ if (match) {
+ mf->width = match->width;
+ mf->height = match->height;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int sr030pc30_queryctrl(struct v4l2_subdev *sd,
+ struct v4l2_queryctrl *qc)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(sr030pc30_ctrl); i++)
+ if (qc->id == sr030pc30_ctrl[i].id) {
+ *qc = sr030pc30_ctrl[i];
+ v4l2_dbg(1, debug, sd, "%s id: %d\n",
+ __func__, qc->id);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static inline int sr030pc30_set_bluebalance(struct v4l2_subdev *sd, int value)
+{
+ int ret = cam_i2c_write(sd, MWB_BGAIN_REG, value);
+ if (!ret)
+ to_sr030pc30(sd)->blue_balance = value;
+ return ret;
+}
+
+static inline int sr030pc30_set_redbalance(struct v4l2_subdev *sd, int value)
+{
+ int ret = cam_i2c_write(sd, MWB_RGAIN_REG, value);
+ if (!ret)
+ to_sr030pc30(sd)->red_balance = value;
+ return ret;
+}
+
+static int sr030pc30_s_ctrl(struct v4l2_subdev *sd,
+ struct v4l2_control *ctrl)
+{
+ int i, ret = 0;
+
+ for (i = 0; i < ARRAY_SIZE(sr030pc30_ctrl); i++)
+ if (ctrl->id == sr030pc30_ctrl[i].id)
+ break;
+
+ if (i == ARRAY_SIZE(sr030pc30_ctrl))
+ return -EINVAL;
+
+ if (ctrl->value < sr030pc30_ctrl[i].minimum ||
+ ctrl->value > sr030pc30_ctrl[i].maximum)
+ return -ERANGE;
+
+ v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
+ __func__, ctrl->id, ctrl->value);
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ sr030pc30_enable_autowhitebalance(sd, ctrl->value);
+ break;
+ case V4L2_CID_BLUE_BALANCE:
+ ret = sr030pc30_set_bluebalance(sd, ctrl->value);
+ break;
+ case V4L2_CID_RED_BALANCE:
+ ret = sr030pc30_set_redbalance(sd, ctrl->value);
+ break;
+ case V4L2_CID_EXPOSURE_AUTO:
+ sr030pc30_enable_autoexposure(sd,
+ ctrl->value == V4L2_EXPOSURE_AUTO);
+ break;
+ case V4L2_CID_EXPOSURE:
+ ret = sr030pc30_set_exposure(sd, ctrl->value);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static int sr030pc30_g_ctrl(struct v4l2_subdev *sd,
+ struct v4l2_control *ctrl)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+
+ v4l2_dbg(1, debug, sd, "%s: id: %d\n", __func__, ctrl->id);
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ ctrl->value = info->auto_wb;
+ break;
+ case V4L2_CID_BLUE_BALANCE:
+ ctrl->value = info->blue_balance;
+ break;
+ case V4L2_CID_RED_BALANCE:
+ ctrl->value = info->red_balance;
+ break;
+ case V4L2_CID_EXPOSURE_AUTO:
+ ctrl->value = info->auto_exp;
+ break;
+ case V4L2_CID_EXPOSURE:
+ ctrl->value = info->exposure;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int sr030pc30_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
+ enum v4l2_mbus_pixelcode *code)
+{
+ if (!code || index >= ARRAY_SIZE(sr030pc30_formats))
+ return -EINVAL;
+
+ *code = sr030pc30_formats[index].code;
+ return 0;
+}
+
+static int sr030pc30_g_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+ int ret;
+
+ if (!mf)
+ return -EINVAL;
+
+ if (!info->curr_win || !info->curr_fmt) {
+ ret = sr030pc30_set_params(sd);
+ if (ret)
+ return ret;
+ }
+
+ mf->width = info->curr_win->width;
+ mf->height = info->curr_win->height;
+ mf->code = info->curr_fmt->code;
+ mf->colorspace = info->curr_fmt->colorspace;
+ mf->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+/* Return nearest media bus frame format. */
+static const struct sr030pc30_format *try_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ int i = ARRAY_SIZE(sr030pc30_formats);
+
+ sr030pc30_try_frame_size(mf);
+
+ while (i--)
+ if (mf->code == sr030pc30_formats[i].code)
+ break;
+
+ mf->code = sr030pc30_formats[i].code;
+
+ return &sr030pc30_formats[i];
+}
+
+/* Return nearest media bus frame format. */
+static int sr030pc30_try_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ if (!sd || !mf)
+ return -EINVAL;
+
+ try_fmt(sd, mf);
+ return 0;
+}
+
+static int sr030pc30_s_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+
+ if (!sd || !mf)
+ return -EINVAL;
+
+ info->curr_fmt = try_fmt(sd, mf);
+
+ return sr030pc30_set_params(sd);
+}
+
+static int sr030pc30_base_config(struct v4l2_subdev *sd)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+ int ret;
+ unsigned long expmin, expmax;
+
+ ret = sr030pc30_bulk_write_reg(sd, sr030pc30_base_regs);
+ if (!ret) {
+ info->curr_fmt = &sr030pc30_formats[0];
+ info->curr_win = &sr030pc30_sizes[0];
+ ret = sr030pc30_set_params(sd);
+ }
+ if (!ret)
+ ret = sr030pc30_pwr_ctrl(sd, false, false);
+
+ if(!ret && !info->pdata)
+ return ret;
+
+ expmin = EXPOS_MIN_MS * info->pdata->clk_rate / (8 * 1000);
+ expmax = EXPOS_MAX_MS * info->pdata->clk_rate / (8 * 1000);
+
+ v4l2_dbg(1, debug, sd, "%s: expmin= %lx, expmax= %lx", __func__,
+ expmin, expmax);
+
+ /* Setting up manual exposure time range */
+ ret = cam_i2c_write(sd, EXP_MMINH_REG, expmin >> 8 & 0xFF);
+ if (!ret)
+ ret = cam_i2c_write(sd, EXP_MMINL_REG, expmin & 0xFF);
+ if (!ret)
+ ret = cam_i2c_write(sd, EXP_MMAXH_REG, expmax >> 16 & 0xFF);
+ if (!ret)
+ ret = cam_i2c_write(sd, EXP_MMAXM_REG, expmax >> 8 & 0xFF);
+ if (!ret)
+ ret = cam_i2c_write(sd, EXP_MMAXL_REG, expmax & 0xFF);
+
+ return ret;
+}
+
+static int sr030pc30_s_config(struct v4l2_subdev *sd,
+ int irq, void *platform_data)
+{
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+
+ info->pdata = platform_data;
+ return 0;
+}
+
+static int sr030pc30_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ return 0;
+}
+
+static int sr030pc30_s_power(struct v4l2_subdev *sd, int on)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+ const struct sr030pc30_platform_data *pdata = info->pdata;
+ int ret;
+
+ if (WARN(pdata == NULL, "No platform data!"))
+ return -ENOMEM;
+
+ /*
+ * Put sensor into power sleep mode before switching off
+ * power and disabling MCLK.
+ */
+ if (!on)
+ sr030pc30_pwr_ctrl(sd, false, true);
+
+ /* set_power controls sensor's power and clock */
+ if (pdata->set_power) {
+ ret = pdata->set_power(&client->dev, on);
+ if (ret)
+ return ret;
+ }
+
+ if (on) {
+ ret = sr030pc30_base_config(sd);
+ } else {
+ info->curr_win = NULL;
+ info->curr_fmt = NULL;
+ }
+
+ return ret;
+}
+
+static const struct v4l2_subdev_core_ops sr030pc30_core_ops = {
+ .s_config = sr030pc30_s_config,
+ .s_power = sr030pc30_s_power,
+ .queryctrl = sr030pc30_queryctrl,
+ .s_ctrl = sr030pc30_s_ctrl,
+ .g_ctrl = sr030pc30_g_ctrl,
+};
+
+static const struct v4l2_subdev_video_ops sr030pc30_video_ops = {
+ .s_stream = sr030pc30_s_stream,
+ .g_mbus_fmt = sr030pc30_g_fmt,
+ .s_mbus_fmt = sr030pc30_s_fmt,
+ .try_mbus_fmt = sr030pc30_try_fmt,
+ .enum_mbus_fmt = sr030pc30_enum_fmt,
+};
+
+static const struct v4l2_subdev_ops sr030pc30_ops = {
+ .core = &sr030pc30_core_ops,
+ .video = &sr030pc30_video_ops,
+};
+
+/*
+ * Detect sensor type. Return 0 if SR030PC30 was detected
+ * or -ENODEV otherwise.
+ */
+static int sr030pc30_detect(struct i2c_client *client)
+{
+ const struct sr030pc30_platform_data *pdata
+ = client->dev.platform_data;
+ int ret;
+
+ /* Enable sensor's power and clock */
+ if (pdata->set_power) {
+ ret = pdata->set_power(&client->dev, 1);
+ if (ret)
+ return ret;
+ }
+
+ ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
+
+ if (pdata->set_power)
+ pdata->set_power(&client->dev, 0);
+
+ if (ret < 0) {
+ dev_err(&client->dev, "%s: I2C read failed\n", __func__);
+ return ret;
+ }
+
+ return ret == SR030PC30_ID ? 0 : -ENODEV;
+}
+
+
+static int sr030pc30_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct sr030pc30_info *info;
+ struct v4l2_subdev *sd;
+ const struct sr030pc30_platform_data *pdata
+ = client->dev.platform_data;
+ int ret;
+
+ if (!pdata) {
+ dev_err(&client->dev, "No platform data!");
+ return -EIO;
+ }
+
+ ret = sr030pc30_detect(client);
+ if(ret)
+ return ret;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ sd = &info->sd;
+ strcpy(sd->name, MODULE_NAME);
+ info->pdata = client->dev.platform_data;
+
+ v4l2_i2c_subdev_init(sd, client, &sr030pc30_ops);
+
+ info->i2c_reg_page = -1;
+ info->hflip = 1;
+ info->auto_exp = 1;
+ info->exposure = 30;
+
+ return 0;
+}
+
+static int sr030pc30_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct sr030pc30_info *info = to_sr030pc30(sd);
+
+ v4l2_device_unregister_subdev(sd);
+ kfree(info);
+ return 0;
+}
+
+static const struct i2c_device_id sr030pc30_id[] = {
+ { MODULE_NAME, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, sr030pc30_id);
+
+
+static struct i2c_driver sr030pc30_i2c_driver = {
+ .driver = {
+ .name = MODULE_NAME
+ },
+ .probe = sr030pc30_probe,
+ .remove = sr030pc30_remove,
+ .id_table = sr030pc30_id,
+};
+
+static int __init sr030pc30_init(void)
+{
+ return i2c_add_driver(&sr030pc30_i2c_driver);
+}
+
+static void __exit sr030pc30_exit(void)
+{
+ i2c_del_driver(&sr030pc30_i2c_driver);
+}
+
+module_init(sr030pc30_init);
+module_exit(sr030pc30_exit);
+
+MODULE_DESCRIPTION("Siliconfile SR030PC30 camera driver");
+MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>");
+MODULE_LICENSE("GPL");
diff --git a/include/media/sr030pc30.h b/include/media/sr030pc30.h
new file mode 100644
index 0000000..6f901a6
--- /dev/null
+++ b/include/media/sr030pc30.h
@@ -0,0 +1,21 @@
+/*
+ * Driver header for SR030PC30 camera sensor
+ *
+ * Copyright (c) 2010 Samsung Electronics, Co. Ltd
+ * Contact: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef SR030PC30_H
+#define SR030PC30_H
+
+struct sr030pc30_platform_data {
+ unsigned long clk_rate; /* master clock frequency in Hz */
+ int (*set_power)(struct device *dev, int on);
+};
+
+#endif /* SR030PC30_H */
--
1.7.1
--
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