[media] Add v4l2 subdev driver for NOON010PC30L image sensor
Sylwester Nawrocki [Mon, 3 Jan 2011 11:07:30 +0000 (08:07 -0300)]
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>

drivers/media/video/Kconfig
drivers/media/video/Makefile
drivers/media/video/noon010pc30.c [new file with mode: 0644]
include/media/noon010pc30.h [new file with mode: 0644]

index 9f20fc5..f86e407 100644 (file)
@@ -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
index 40833fe..251b7ca 100644 (file)
@@ -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
diff --git a/drivers/media/video/noon010pc30.c b/drivers/media/video/noon010pc30.c
new file mode 100644 (file)
index 0000000..35f722a
--- /dev/null
@@ -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");
diff --git a/include/media/noon010pc30.h b/include/media/noon010pc30.h
new file mode 100644 (file)
index 0000000..58eafee
--- /dev/null
@@ -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 */