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[media] Add v4l2 subdev driver for NOON010PC30L image sensor

Add I2C/V4L2 subdev driver for Siliconfile NOON010PC30 CIF camera.
The driver implements basic functionality, i.e. CIF/QCIF/QQCIF
resolution and color format selection, automatic/manual color
balance control. Other functions like cropping, rotation/flip,
exposure etc. can be easily implemented if needed.

Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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commit f8e2e3eab8f70103fb4680e2da202e14199c199a 1 parent 22fb985
Sylwester Nawrocki authored Mauro Carvalho Chehab committed
View
6 drivers/media/video/Kconfig
@@ -740,6 +740,12 @@ config VIDEO_VIA_CAMERA
Chrome9 chipsets. Currently only tested on OLPC xo-1.5 systems
with ov7670 sensors.
+config VIDEO_NOON010PC30
+ tristate "NOON010PC30 CIF camera sensor support"
+ depends on I2C && VIDEO_V4L2
+ ---help---
+ This driver supports NOON010PC30 CIF camera from Siliconfile
+
config SOC_CAMERA
tristate "SoC camera support"
depends on VIDEO_V4L2 && HAS_DMA && I2C
View
1  drivers/media/video/Makefile
@@ -67,6 +67,7 @@ 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-$(CONFIG_VIDEO_NOON010PC30) += noon010pc30.o
obj-$(CONFIG_SOC_CAMERA_IMX074) += imx074.o
obj-$(CONFIG_SOC_CAMERA_MT9M001) += mt9m001.o
View
792 drivers/media/video/noon010pc30.c
@@ -0,0 +1,792 @@
+/*
+ * Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP
+ *
+ * Copyright (C) 2010 Samsung Electronics
+ * Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com>
+ *
+ * Initial register configuration based on a driver authored by
+ * HeungJun Kim <riverful.kim@samsung.com>.
+ *
+ * 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 vergsion.
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/regulator/consumer.h>
+#include <media/noon010pc30.h>
+#include <media/v4l2-chip-ident.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mediabus.h>
+#include <media/v4l2-subdev.h>
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Enable module debug trace. Set to 1 to enable.");
+
+#define MODULE_NAME "NOON010PC30"
+
+/*
+ * 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 VDO_CTL_REG(n) (0x0010 + (n))
+#define SYNC_CTL_REG 0x0012
+/* Window size and position */
+#define WIN_ROWH_REG 0x0013
+#define WIN_ROWL_REG 0x0014
+#define WIN_COLH_REG 0x0015
+#define WIN_COLL_REG 0x0016
+#define WIN_HEIGHTH_REG 0x0017
+#define WIN_HEIGHTL_REG 0x0018
+#define WIN_WIDTHH_REG 0x0019
+#define WIN_WIDTHL_REG 0x001A
+#define HBLANKH_REG 0x001B
+#define HBLANKL_REG 0x001C
+#define VSYNCH_REG 0x001D
+#define VSYNCL_REG 0x001E
+/* VSYNC control */
+#define VS_CTL_REG(n) (0x00A1 + (n))
+/* page 1 */
+#define ISP_CTL_REG(n) (0x0110 + (n))
+#define YOFS_REG 0x0119
+#define DARK_YOFS_REG 0x011A
+#define SAT_CTL_REG 0x0120
+#define BSAT_REG 0x0121
+#define RSAT_REG 0x0122
+/* Color correction */
+#define CMC_CTL_REG 0x0130
+#define CMC_OFSGH_REG 0x0133
+#define CMC_OFSGL_REG 0x0135
+#define CMC_SIGN_REG 0x0136
+#define CMC_GOFS_REG 0x0137
+#define CMC_COEF_REG(n) (0x0138 + (n))
+#define CMC_OFS_REG(n) (0x0141 + (n))
+/* Gamma correction */
+#define GMA_CTL_REG 0x0160
+#define GMA_COEF_REG(n) (0x0161 + (n))
+/* Lens Shading */
+#define LENS_CTRL_REG 0x01D0
+#define LENS_XCEN_REG 0x01D1
+#define LENS_YCEN_REG 0x01D2
+#define LENS_RC_REG 0x01D3
+#define LENS_GC_REG 0x01D4
+#define LENS_BC_REG 0x01D5
+#define L_AGON_REG 0x01D6
+#define L_AGOFF_REG 0x01D7
+/* Page 3 - Auto Exposure */
+#define AE_CTL_REG(n) (0x0310 + (n))
+#define AE_CTL9_REG 0x032C
+#define AE_CTL10_REG 0x032D
+#define AE_YLVL_REG 0x031C
+#define AE_YTH_REG(n) (0x031D + (n))
+#define AE_WGT_REG 0x0326
+#define EXP_TIMEH_REG 0x0333
+#define EXP_TIMEM_REG 0x0334
+#define EXP_TIMEL_REG 0x0335
+#define EXP_MMINH_REG 0x0336
+#define EXP_MMINL_REG 0x0337
+#define EXP_MMAXH_REG 0x0338
+#define EXP_MMAXM_REG 0x0339
+#define EXP_MMAXL_REG 0x033A
+/* Page 4 - Auto White Balance */
+#define AWB_CTL_REG(n) (0x0410 + (n))
+#define AWB_ENABE 0x80
+#define AWB_WGHT_REG 0x0419
+#define BGAIN_PAR_REG(n) (0x044F + (n))
+/* Manual white balance, when AWB_CTL2[0]=1 */
+#define MWB_RGAIN_REG 0x0466
+#define MWB_BGAIN_REG 0x0467
+
+/* The token to mark an array end */
+#define REG_TERM 0xFFFF
+
+struct noon010_format {
+ enum v4l2_mbus_pixelcode code;
+ enum v4l2_colorspace colorspace;
+ u16 ispctl1_reg;
+};
+
+struct noon010_frmsize {
+ u16 width;
+ u16 height;
+ int vid_ctl1;
+};
+
+static const char * const noon010_supply_name[] = {
+ "vdd_core", "vddio", "vdda"
+};
+
+#define NOON010_NUM_SUPPLIES ARRAY_SIZE(noon010_supply_name)
+
+struct noon010_info {
+ struct v4l2_subdev sd;
+ struct v4l2_ctrl_handler hdl;
+ const struct noon010pc30_platform_data *pdata;
+ const struct noon010_format *curr_fmt;
+ const struct noon010_frmsize *curr_win;
+ unsigned int hflip:1;
+ unsigned int vflip:1;
+ unsigned int power:1;
+ u8 i2c_reg_page;
+ struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES];
+ u32 gpio_nreset;
+ u32 gpio_nstby;
+};
+
+struct i2c_regval {
+ u16 addr;
+ u16 val;
+};
+
+/* Supported resolutions. */
+static const struct noon010_frmsize noon010_sizes[] = {
+ {
+ .width = 352,
+ .height = 288,
+ .vid_ctl1 = 0,
+ }, {
+ .width = 176,
+ .height = 144,
+ .vid_ctl1 = 0x10,
+ }, {
+ .width = 88,
+ .height = 72,
+ .vid_ctl1 = 0x20,
+ },
+};
+
+/* Supported pixel formats. */
+static const struct noon010_format noon010_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 noon010_base_regs[] = {
+ { WIN_COLL_REG, 0x06 }, { HBLANKL_REG, 0x7C },
+ /* Color corection and saturation */
+ { ISP_CTL_REG(0), 0x30 }, { ISP_CTL_REG(2), 0x30 },
+ { YOFS_REG, 0x80 }, { DARK_YOFS_REG, 0x04 },
+ { SAT_CTL_REG, 0x1F }, { BSAT_REG, 0x90 },
+ { CMC_CTL_REG, 0x0F }, { CMC_OFSGH_REG, 0x3C },
+ { CMC_OFSGL_REG, 0x2C }, { CMC_SIGN_REG, 0x3F },
+ { CMC_COEF_REG(0), 0x79 }, { CMC_OFS_REG(0), 0x00 },
+ { CMC_COEF_REG(1), 0x39 }, { CMC_OFS_REG(1), 0x00 },
+ { CMC_COEF_REG(2), 0x00 }, { CMC_OFS_REG(2), 0x00 },
+ { CMC_COEF_REG(3), 0x11 }, { CMC_OFS_REG(3), 0x8B },
+ { CMC_COEF_REG(4), 0x65 }, { CMC_OFS_REG(4), 0x07 },
+ { CMC_COEF_REG(5), 0x14 }, { CMC_OFS_REG(5), 0x04 },
+ { CMC_COEF_REG(6), 0x01 }, { CMC_OFS_REG(6), 0x9C },
+ { CMC_COEF_REG(7), 0x33 }, { CMC_OFS_REG(7), 0x89 },
+ { CMC_COEF_REG(8), 0x74 }, { CMC_OFS_REG(8), 0x25 },
+ /* Automatic white balance */
+ { AWB_CTL_REG(0), 0x78 }, { AWB_CTL_REG(1), 0x2E },
+ { AWB_CTL_REG(2), 0x20 }, { AWB_CTL_REG(3), 0x85 },
+ /* Auto exposure */
+ { AE_CTL_REG(0), 0xDC }, { AE_CTL_REG(1), 0x81 },
+ { AE_CTL_REG(2), 0x30 }, { AE_CTL_REG(3), 0xA5 },
+ { AE_CTL_REG(4), 0x40 }, { AE_CTL_REG(5), 0x51 },
+ { AE_CTL_REG(6), 0x33 }, { AE_CTL_REG(7), 0x7E },
+ { AE_CTL9_REG, 0x00 }, { AE_CTL10_REG, 0x02 },
+ { AE_YLVL_REG, 0x44 }, { AE_YTH_REG(0), 0x34 },
+ { AE_YTH_REG(1), 0x30 }, { AE_WGT_REG, 0xD5 },
+ /* Lens shading compensation */
+ { LENS_CTRL_REG, 0x01 }, { LENS_XCEN_REG, 0x80 },
+ { LENS_YCEN_REG, 0x70 }, { LENS_RC_REG, 0x53 },
+ { LENS_GC_REG, 0x40 }, { LENS_BC_REG, 0x3E },
+ { REG_TERM, 0 },
+};
+
+static inline struct noon010_info *to_noon010(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct noon010_info, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct noon010_info, hdl)->sd;
+}
+
+static inline int set_i2c_page(struct noon010_info *info,
+ struct i2c_client *client, unsigned int reg)
+{
+ u32 page = reg >> 8 & 0xFF;
+ int ret = 0;
+
+ 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 noon010_info *info = to_noon010(sd);
+ int ret = set_i2c_page(info, client, reg_addr);
+
+ if (ret)
+ return ret;
+ return i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
+}
+
+static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct noon010_info *info = to_noon010(sd);
+ int ret = set_i2c_page(info, client, reg_addr);
+
+ if (ret)
+ return ret;
+ return i2c_smbus_write_byte_data(client, reg_addr & 0xFF, val);
+}
+
+static inline int noon010_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 noon010_power_ctrl(struct v4l2_subdev *sd, bool reset, bool sleep)
+{
+ struct noon010_info *info = to_noon010(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 (reset && !ret)
+ info->i2c_reg_page = -1;
+ }
+ return ret;
+}
+
+/* Automatic white balance control */
+static int noon010_enable_autowhitebalance(struct v4l2_subdev *sd, int on)
+{
+ int ret;
+
+ ret = cam_i2c_write(sd, AWB_CTL_REG(1), on ? 0x2E : 0x2F);
+ if (!ret)
+ ret = cam_i2c_write(sd, AWB_CTL_REG(0), on ? 0xFB : 0x7B);
+ return ret;
+}
+
+static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip)
+{
+ struct noon010_info *info = to_noon010(sd);
+ int reg, ret;
+
+ reg = cam_i2c_read(sd, VDO_CTL_REG(1));
+ if (reg < 0)
+ return reg;
+
+ reg &= 0x7C;
+ if (hflip)
+ reg |= 0x01;
+ if (vflip)
+ reg |= 0x02;
+
+ ret = cam_i2c_write(sd, VDO_CTL_REG(1), reg | 0x80);
+ if (!ret) {
+ info->hflip = hflip;
+ info->vflip = vflip;
+ }
+ return ret;
+}
+
+/* Configure resolution and color format */
+static int noon010_set_params(struct v4l2_subdev *sd)
+{
+ struct noon010_info *info = to_noon010(sd);
+ int ret;
+
+ if (!info->curr_win)
+ return -EINVAL;
+
+ ret = cam_i2c_write(sd, VDO_CTL_REG(0), info->curr_win->vid_ctl1);
+
+ if (!ret && info->curr_fmt)
+ ret = cam_i2c_write(sd, ISP_CTL_REG(0),
+ info->curr_fmt->ispctl1_reg);
+ return ret;
+}
+
+/* Find nearest matching image pixel size. */
+static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf)
+{
+ unsigned int min_err = ~0;
+ int i = ARRAY_SIZE(noon010_sizes);
+ const struct noon010_frmsize *fsize = &noon010_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 power_enable(struct noon010_info *info)
+{
+ int ret;
+
+ if (info->power) {
+ v4l2_info(&info->sd, "%s: sensor is already on\n", __func__);
+ return 0;
+ }
+
+ if (gpio_is_valid(info->gpio_nstby))
+ gpio_set_value(info->gpio_nstby, 0);
+
+ if (gpio_is_valid(info->gpio_nreset))
+ gpio_set_value(info->gpio_nreset, 0);
+
+ ret = regulator_bulk_enable(NOON010_NUM_SUPPLIES, info->supply);
+ if (ret)
+ return ret;
+
+ if (gpio_is_valid(info->gpio_nreset)) {
+ msleep(50);
+ gpio_set_value(info->gpio_nreset, 1);
+ }
+ if (gpio_is_valid(info->gpio_nstby)) {
+ udelay(1000);
+ gpio_set_value(info->gpio_nstby, 1);
+ }
+ if (gpio_is_valid(info->gpio_nreset)) {
+ udelay(1000);
+ gpio_set_value(info->gpio_nreset, 0);
+ msleep(100);
+ gpio_set_value(info->gpio_nreset, 1);
+ msleep(20);
+ }
+ info->power = 1;
+
+ v4l2_dbg(1, debug, &info->sd, "%s: sensor is on\n", __func__);
+ return 0;
+}
+
+static int power_disable(struct noon010_info *info)
+{
+ int ret;
+
+ if (!info->power) {
+ v4l2_info(&info->sd, "%s: sensor is already off\n", __func__);
+ return 0;
+ }
+
+ ret = regulator_bulk_disable(NOON010_NUM_SUPPLIES, info->supply);
+ if (ret)
+ return ret;
+
+ if (gpio_is_valid(info->gpio_nstby))
+ gpio_set_value(info->gpio_nstby, 0);
+
+ if (gpio_is_valid(info->gpio_nreset))
+ gpio_set_value(info->gpio_nreset, 0);
+
+ info->power = 0;
+
+ v4l2_dbg(1, debug, &info->sd, "%s: sensor is off\n", __func__);
+
+ return 0;
+}
+
+static int noon010_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = to_sd(ctrl);
+
+ v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
+ __func__, ctrl->id, ctrl->val);
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ return noon010_enable_autowhitebalance(sd, ctrl->val);
+ case V4L2_CID_BLUE_BALANCE:
+ return cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val);
+ case V4L2_CID_RED_BALANCE:
+ return cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int noon010_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
+ enum v4l2_mbus_pixelcode *code)
+{
+ if (!code || index >= ARRAY_SIZE(noon010_formats))
+ return -EINVAL;
+
+ *code = noon010_formats[index].code;
+ return 0;
+}
+
+static int noon010_g_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf)
+{
+ struct noon010_info *info = to_noon010(sd);
+ int ret;
+
+ if (!mf)
+ return -EINVAL;
+
+ if (!info->curr_win || !info->curr_fmt) {
+ ret = noon010_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 noon010_format *try_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ int i = ARRAY_SIZE(noon010_formats);
+
+ noon010_try_frame_size(mf);
+
+ while (i--)
+ if (mf->code == noon010_formats[i].code)
+ break;
+
+ mf->code = noon010_formats[i].code;
+
+ return &noon010_formats[i];
+}
+
+static int noon010_try_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ if (!sd || !mf)
+ return -EINVAL;
+
+ try_fmt(sd, mf);
+ return 0;
+}
+
+static int noon010_s_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ struct noon010_info *info = to_noon010(sd);
+
+ if (!sd || !mf)
+ return -EINVAL;
+
+ info->curr_fmt = try_fmt(sd, mf);
+
+ return noon010_set_params(sd);
+}
+
+static int noon010_base_config(struct v4l2_subdev *sd)
+{
+ struct noon010_info *info = to_noon010(sd);
+ int ret;
+
+ ret = noon010_bulk_write_reg(sd, noon010_base_regs);
+ if (!ret) {
+ info->curr_fmt = &noon010_formats[0];
+ info->curr_win = &noon010_sizes[0];
+ ret = noon010_set_params(sd);
+ }
+ if (!ret)
+ ret = noon010_set_flip(sd, 1, 0);
+ if (!ret)
+ ret = noon010_power_ctrl(sd, false, false);
+
+ /* sync the handler and the registers state */
+ v4l2_ctrl_handler_setup(&to_noon010(sd)->hdl);
+ return ret;
+}
+
+static int noon010_s_power(struct v4l2_subdev *sd, int on)
+{
+ struct noon010_info *info = to_noon010(sd);
+ const struct noon010pc30_platform_data *pdata = info->pdata;
+ int ret = 0;
+
+ if (WARN(pdata == NULL, "No platform data!\n"))
+ return -ENOMEM;
+
+ if (on) {
+ ret = power_enable(info);
+ if (ret)
+ return ret;
+ ret = noon010_base_config(sd);
+ } else {
+ noon010_power_ctrl(sd, false, true);
+ ret = power_disable(info);
+ info->curr_win = NULL;
+ info->curr_fmt = NULL;
+ }
+
+ return ret;
+}
+
+static int noon010_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return v4l2_chip_ident_i2c_client(client, chip,
+ V4L2_IDENT_NOON010PC30, 0);
+}
+
+static int noon010_log_status(struct v4l2_subdev *sd)
+{
+ struct noon010_info *info = to_noon010(sd);
+
+ v4l2_ctrl_handler_log_status(&info->hdl, sd->name);
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops noon010_ctrl_ops = {
+ .s_ctrl = noon010_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops noon010_core_ops = {
+ .g_chip_ident = noon010_g_chip_ident,
+ .s_power = noon010_s_power,
+ .g_ctrl = v4l2_subdev_g_ctrl,
+ .s_ctrl = v4l2_subdev_s_ctrl,
+ .queryctrl = v4l2_subdev_queryctrl,
+ .querymenu = v4l2_subdev_querymenu,
+ .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
+ .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
+ .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
+ .log_status = noon010_log_status,
+};
+
+static const struct v4l2_subdev_video_ops noon010_video_ops = {
+ .g_mbus_fmt = noon010_g_fmt,
+ .s_mbus_fmt = noon010_s_fmt,
+ .try_mbus_fmt = noon010_try_fmt,
+ .enum_mbus_fmt = noon010_enum_fmt,
+};
+
+static const struct v4l2_subdev_ops noon010_ops = {
+ .core = &noon010_core_ops,
+ .video = &noon010_video_ops,
+};
+
+/* Return 0 if NOON010PC30L sensor type was detected or -ENODEV otherwise. */
+static int noon010_detect(struct i2c_client *client, struct noon010_info *info)
+{
+ int ret;
+
+ ret = power_enable(info);
+ if (ret)
+ return ret;
+
+ ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
+ if (ret < 0)
+ dev_err(&client->dev, "I2C read failed: 0x%X\n", ret);
+
+ power_disable(info);
+
+ return ret == NOON010PC30_ID ? 0 : -ENODEV;
+}
+
+static int noon010_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct noon010_info *info;
+ struct v4l2_subdev *sd;
+ const struct noon010pc30_platform_data *pdata
+ = client->dev.platform_data;
+ int ret;
+ int i;
+
+ if (!pdata) {
+ dev_err(&client->dev, "No platform data!\n");
+ return -EIO;
+ }
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ sd = &info->sd;
+ strlcpy(sd->name, MODULE_NAME, sizeof(sd->name));
+ v4l2_i2c_subdev_init(sd, client, &noon010_ops);
+
+ v4l2_ctrl_handler_init(&info->hdl, 3);
+
+ v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
+ V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
+ v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
+ V4L2_CID_RED_BALANCE, 0, 127, 1, 64);
+ v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
+ V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64);
+
+ sd->ctrl_handler = &info->hdl;
+
+ ret = info->hdl.error;
+ if (ret)
+ goto np_err;
+
+ info->pdata = client->dev.platform_data;
+ info->i2c_reg_page = -1;
+ info->gpio_nreset = -EINVAL;
+ info->gpio_nstby = -EINVAL;
+
+ if (gpio_is_valid(pdata->gpio_nreset)) {
+ ret = gpio_request(pdata->gpio_nreset, "NOON010PC30 NRST");
+ if (ret) {
+ dev_err(&client->dev, "GPIO request error: %d\n", ret);
+ goto np_err;
+ }
+ info->gpio_nreset = pdata->gpio_nreset;
+ gpio_direction_output(info->gpio_nreset, 0);
+ gpio_export(info->gpio_nreset, 0);
+ }
+
+ if (gpio_is_valid(pdata->gpio_nstby)) {
+ ret = gpio_request(pdata->gpio_nstby, "NOON010PC30 NSTBY");
+ if (ret) {
+ dev_err(&client->dev, "GPIO request error: %d\n", ret);
+ goto np_gpio_err;
+ }
+ info->gpio_nstby = pdata->gpio_nstby;
+ gpio_direction_output(info->gpio_nstby, 0);
+ gpio_export(info->gpio_nstby, 0);
+ }
+
+ for (i = 0; i < NOON010_NUM_SUPPLIES; i++)
+ info->supply[i].supply = noon010_supply_name[i];
+
+ ret = regulator_bulk_get(&client->dev, NOON010_NUM_SUPPLIES,
+ info->supply);
+ if (ret)
+ goto np_reg_err;
+
+ ret = noon010_detect(client, info);
+ if (!ret)
+ return 0;
+
+ /* the sensor detection failed */
+ regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
+np_reg_err:
+ if (gpio_is_valid(info->gpio_nstby))
+ gpio_free(info->gpio_nstby);
+np_gpio_err:
+ if (gpio_is_valid(info->gpio_nreset))
+ gpio_free(info->gpio_nreset);
+np_err:
+ v4l2_ctrl_handler_free(&info->hdl);
+ v4l2_device_unregister_subdev(sd);
+ kfree(info);
+ return ret;
+}
+
+static int noon010_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct noon010_info *info = to_noon010(sd);
+
+ v4l2_device_unregister_subdev(sd);
+ v4l2_ctrl_handler_free(&info->hdl);
+
+ regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
+
+ if (gpio_is_valid(info->gpio_nreset))
+ gpio_free(info->gpio_nreset);
+
+ if (gpio_is_valid(info->gpio_nstby))
+ gpio_free(info->gpio_nstby);
+
+ kfree(info);
+ return 0;
+}
+
+static const struct i2c_device_id noon010_id[] = {
+ { MODULE_NAME, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, noon010_id);
+
+
+static struct i2c_driver noon010_i2c_driver = {
+ .driver = {
+ .name = MODULE_NAME
+ },
+ .probe = noon010_probe,
+ .remove = noon010_remove,
+ .id_table = noon010_id,
+};
+
+static int __init noon010_init(void)
+{
+ return i2c_add_driver(&noon010_i2c_driver);
+}
+
+static void __exit noon010_exit(void)
+{
+ i2c_del_driver(&noon010_i2c_driver);
+}
+
+module_init(noon010_init);
+module_exit(noon010_exit);
+
+MODULE_DESCRIPTION("Siliconfile NOON010PC30 camera driver");
+MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
+MODULE_LICENSE("GPL");
View
28 include/media/noon010pc30.h
@@ -0,0 +1,28 @@
+/*
+ * Driver header for NOON010PC30L camera sensor chip.
+ *
+ * Copyright (c) 2010 Samsung Electronics, Co. Ltd
+ * Contact: Sylwester Nawrocki <s.nawrocki@samsung.com>
+ *
+ * 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 NOON010PC30_H
+#define NOON010PC30_H
+
+/**
+ * @clk_rate: the clock frequency in Hz
+ * @gpio_nreset: GPIO driving nRESET pin
+ * @gpio_nstby: GPIO driving nSTBY pin
+ */
+
+struct noon010pc30_platform_data {
+ unsigned long clk_rate;
+ int gpio_nreset;
+ int gpio_nstby;
+};
+
+#endif /* NOON010PC30_H */
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