#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/log2.h>
-#include <linux/gpio.h>
-#include <media/v4l2-common.h>
+#include <media/v4l2-subdev.h>
#include <media/v4l2-chip-ident.h>
#include <media/soc_camera.h>
-/* mt9m001 i2c address 0x5d
- * The platform has to define i2c_board_info
- * and call i2c_register_board_info() */
+/*
+ * mt9m001 i2c address 0x5d
+ * The platform has to define ctruct i2c_board_info objects and link to them
+ * from struct soc_camera_link
+ */
/* mt9m001 selected register addresses */
#define MT9M001_CHIP_VERSION 0x00
#define MT9M001_GLOBAL_GAIN 0x35
#define MT9M001_CHIP_ENABLE 0xF1
-static const struct soc_camera_data_format mt9m001_colour_formats[] = {
- /* Order important: first natively supported,
- * second supported with a GPIO extender */
- {
- .name = "Bayer (sRGB) 10 bit",
- .depth = 10,
- .fourcc = V4L2_PIX_FMT_SBGGR16,
- .colorspace = V4L2_COLORSPACE_SRGB,
- }, {
- .name = "Bayer (sRGB) 8 bit",
- .depth = 8,
- .fourcc = V4L2_PIX_FMT_SBGGR8,
- .colorspace = V4L2_COLORSPACE_SRGB,
- }
+#define MT9M001_MAX_WIDTH 1280
+#define MT9M001_MAX_HEIGHT 1024
+#define MT9M001_MIN_WIDTH 48
+#define MT9M001_MIN_HEIGHT 32
+#define MT9M001_COLUMN_SKIP 20
+#define MT9M001_ROW_SKIP 12
+
+/* MT9M001 has only one fixed colorspace per pixelcode */
+struct mt9m001_datafmt {
+ enum v4l2_mbus_pixelcode code;
+ enum v4l2_colorspace colorspace;
+};
+
+/* Find a data format by a pixel code in an array */
+static const struct mt9m001_datafmt *mt9m001_find_datafmt(
+ enum v4l2_mbus_pixelcode code, const struct mt9m001_datafmt *fmt,
+ int n)
+{
+ int i;
+ for (i = 0; i < n; i++)
+ if (fmt[i].code == code)
+ return fmt + i;
+
+ return NULL;
+}
+
+static const struct mt9m001_datafmt mt9m001_colour_fmts[] = {
+ /*
+ * Order important: first natively supported,
+ * second supported with a GPIO extender
+ */
+ {V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},
+ {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
};
-static const struct soc_camera_data_format mt9m001_monochrome_formats[] = {
+static const struct mt9m001_datafmt mt9m001_monochrome_fmts[] = {
/* Order important - see above */
- {
- .name = "Monochrome 10 bit",
- .depth = 10,
- .fourcc = V4L2_PIX_FMT_Y16,
- }, {
- .name = "Monochrome 8 bit",
- .depth = 8,
- .fourcc = V4L2_PIX_FMT_GREY,
- },
+ {V4L2_MBUS_FMT_Y10_1X10, V4L2_COLORSPACE_JPEG},
+ {V4L2_MBUS_FMT_GREY8_1X8, V4L2_COLORSPACE_JPEG},
};
struct mt9m001 {
- struct i2c_client *client;
- struct soc_camera_device icd;
+ struct v4l2_subdev subdev;
+ struct v4l2_rect rect; /* Sensor window */
+ const struct mt9m001_datafmt *fmt;
+ const struct mt9m001_datafmt *fmts;
+ int num_fmts;
int model; /* V4L2_IDENT_MT9M001* codes from v4l2-chip-ident.h */
- int switch_gpio;
+ unsigned int gain;
+ unsigned int exposure;
+ unsigned short y_skip_top; /* Lines to skip at the top */
unsigned char autoexposure;
- unsigned char datawidth;
};
-static int reg_read(struct soc_camera_device *icd, const u8 reg)
+static struct mt9m001 *to_mt9m001(const struct i2c_client *client)
+{
+ return container_of(i2c_get_clientdata(client), struct mt9m001, subdev);
+}
+
+static int reg_read(struct i2c_client *client, const u8 reg)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
- struct i2c_client *client = mt9m001->client;
s32 data = i2c_smbus_read_word_data(client, reg);
return data < 0 ? data : swab16(data);
}
-static int reg_write(struct soc_camera_device *icd, const u8 reg,
+static int reg_write(struct i2c_client *client, const u8 reg,
const u16 data)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
- return i2c_smbus_write_word_data(mt9m001->client, reg, swab16(data));
+ return i2c_smbus_write_word_data(client, reg, swab16(data));
}
-static int reg_set(struct soc_camera_device *icd, const u8 reg,
+static int reg_set(struct i2c_client *client, const u8 reg,
const u16 data)
{
int ret;
- ret = reg_read(icd, reg);
+ ret = reg_read(client, reg);
if (ret < 0)
return ret;
- return reg_write(icd, reg, ret | data);
+ return reg_write(client, reg, ret | data);
}
-static int reg_clear(struct soc_camera_device *icd, const u8 reg,
+static int reg_clear(struct i2c_client *client, const u8 reg,
const u16 data)
{
int ret;
- ret = reg_read(icd, reg);
+ ret = reg_read(client, reg);
if (ret < 0)
return ret;
- return reg_write(icd, reg, ret & ~data);
+ return reg_write(client, reg, ret & ~data);
}
-static int mt9m001_init(struct soc_camera_device *icd)
+static int mt9m001_init(struct i2c_client *client)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
- struct soc_camera_link *icl = mt9m001->client->dev.platform_data;
int ret;
- dev_dbg(icd->vdev->parent, "%s\n", __func__);
-
- if (icl->power) {
- ret = icl->power(&mt9m001->client->dev, 1);
- if (ret < 0) {
- dev_err(icd->vdev->parent,
- "Platform failed to power-on the camera.\n");
- return ret;
- }
- }
+ dev_dbg(&client->dev, "%s\n", __func__);
- /* The camera could have been already on, we reset it additionally */
- if (icl->reset)
- ret = icl->reset(&mt9m001->client->dev);
- else
- ret = -ENODEV;
+ /*
+ * We don't know, whether platform provides reset, issue a soft reset
+ * too. This returns all registers to their default values.
+ */
+ ret = reg_write(client, MT9M001_RESET, 1);
+ if (!ret)
+ ret = reg_write(client, MT9M001_RESET, 0);
- if (ret < 0) {
- /* Either no platform reset, or platform reset failed */
- ret = reg_write(icd, MT9M001_RESET, 1);
- if (!ret)
- ret = reg_write(icd, MT9M001_RESET, 0);
- }
/* Disable chip, synchronous option update */
if (!ret)
- ret = reg_write(icd, MT9M001_OUTPUT_CONTROL, 0);
+ ret = reg_write(client, MT9M001_OUTPUT_CONTROL, 0);
return ret;
}
-static int mt9m001_release(struct soc_camera_device *icd)
+static int mt9m001_s_stream(struct v4l2_subdev *sd, int enable)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
- struct soc_camera_link *icl = mt9m001->client->dev.platform_data;
-
- /* Disable the chip */
- reg_write(icd, MT9M001_OUTPUT_CONTROL, 0);
-
- if (icl->power)
- icl->power(&mt9m001->client->dev, 0);
+ struct i2c_client *client = sd->priv;
- return 0;
-}
-
-static int mt9m001_start_capture(struct soc_camera_device *icd)
-{
- /* Switch to master "normal" mode */
- if (reg_write(icd, MT9M001_OUTPUT_CONTROL, 2) < 0)
+ /* Switch to master "normal" mode or stop sensor readout */
+ if (reg_write(client, MT9M001_OUTPUT_CONTROL, enable ? 2 : 0) < 0)
return -EIO;
return 0;
}
-static int mt9m001_stop_capture(struct soc_camera_device *icd)
-{
- /* Stop sensor readout */
- if (reg_write(icd, MT9M001_OUTPUT_CONTROL, 0) < 0)
- return -EIO;
- return 0;
-}
-
-static int bus_switch_request(struct mt9m001 *mt9m001,
- struct soc_camera_link *icl)
-{
-#ifdef CONFIG_MT9M001_PCA9536_SWITCH
- int ret;
- unsigned int gpio = icl->gpio;
-
- if (gpio_is_valid(gpio)) {
- /* We have a data bus switch. */
- ret = gpio_request(gpio, "mt9m001");
- if (ret < 0) {
- dev_err(&mt9m001->client->dev, "Cannot get GPIO %u\n",
- gpio);
- return ret;
- }
-
- ret = gpio_direction_output(gpio, 0);
- if (ret < 0) {
- dev_err(&mt9m001->client->dev,
- "Cannot set GPIO %u to output\n", gpio);
- gpio_free(gpio);
- return ret;
- }
- }
-
- mt9m001->switch_gpio = gpio;
-#else
- mt9m001->switch_gpio = -EINVAL;
-#endif
- return 0;
-}
-
-static void bus_switch_release(struct mt9m001 *mt9m001)
-{
-#ifdef CONFIG_MT9M001_PCA9536_SWITCH
- if (gpio_is_valid(mt9m001->switch_gpio))
- gpio_free(mt9m001->switch_gpio);
-#endif
-}
-
-static int bus_switch_act(struct mt9m001 *mt9m001, int go8bit)
-{
-#ifdef CONFIG_MT9M001_PCA9536_SWITCH
- if (!gpio_is_valid(mt9m001->switch_gpio))
- return -ENODEV;
-
- gpio_set_value_cansleep(mt9m001->switch_gpio, go8bit);
- return 0;
-#else
- return -ENODEV;
-#endif
-}
-
-static int bus_switch_possible(struct mt9m001 *mt9m001)
-{
-#ifdef CONFIG_MT9M001_PCA9536_SWITCH
- return gpio_is_valid(mt9m001->switch_gpio);
-#else
- return 0;
-#endif
-}
-
static int mt9m001_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
- unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK;
- int ret;
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
+ unsigned long width_flag = flags & SOCAM_DATAWIDTH_MASK;
- /* Flags validity verified in test_bus_param */
+ /* Only one width bit may be set */
+ if (!is_power_of_2(width_flag))
+ return -EINVAL;
- if ((mt9m001->datawidth != 10 && (width_flag == SOCAM_DATAWIDTH_10)) ||
- (mt9m001->datawidth != 9 && (width_flag == SOCAM_DATAWIDTH_9)) ||
- (mt9m001->datawidth != 8 && (width_flag == SOCAM_DATAWIDTH_8))) {
- /* Well, we actually only can do 10 or 8 bits... */
- if (width_flag == SOCAM_DATAWIDTH_9)
- return -EINVAL;
- ret = bus_switch_act(mt9m001,
- width_flag == SOCAM_DATAWIDTH_8);
- if (ret < 0)
- return ret;
+ if (icl->set_bus_param)
+ return icl->set_bus_param(icl, width_flag);
- mt9m001->datawidth = width_flag == SOCAM_DATAWIDTH_8 ? 8 : 10;
- }
+ /*
+ * Without board specific bus width settings we only support the
+ * sensors native bus width
+ */
+ if (width_flag == SOCAM_DATAWIDTH_10)
+ return 0;
- return 0;
+ return -EINVAL;
}
static unsigned long mt9m001_query_bus_param(struct soc_camera_device *icd)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
- struct soc_camera_link *icl = mt9m001->client->dev.platform_data;
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
/* MT9M001 has all capture_format parameters fixed */
- unsigned long flags = SOCAM_DATAWIDTH_10 | SOCAM_PCLK_SAMPLE_RISING |
+ unsigned long flags = SOCAM_PCLK_SAMPLE_FALLING |
SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
- SOCAM_MASTER;
+ SOCAM_DATA_ACTIVE_HIGH | SOCAM_MASTER;
- if (bus_switch_possible(mt9m001))
- flags |= SOCAM_DATAWIDTH_8;
+ if (icl->query_bus_param)
+ flags |= icl->query_bus_param(icl) & SOCAM_DATAWIDTH_MASK;
+ else
+ flags |= SOCAM_DATAWIDTH_10;
return soc_camera_apply_sensor_flags(icl, flags);
}
-static int mt9m001_set_fmt(struct soc_camera_device *icd,
- __u32 pixfmt, struct v4l2_rect *rect)
+static int mt9m001_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ struct v4l2_rect rect = a->c;
+ struct soc_camera_device *icd = client->dev.platform_data;
int ret;
const u16 hblank = 9, vblank = 25;
+ unsigned int total_h;
+
+ if (mt9m001->fmts == mt9m001_colour_fmts)
+ /*
+ * Bayer format - even number of rows for simplicity,
+ * but let the user play with the top row.
+ */
+ rect.height = ALIGN(rect.height, 2);
+
+ /* Datasheet requirement: see register description */
+ rect.width = ALIGN(rect.width, 2);
+ rect.left = ALIGN(rect.left, 2);
+
+ soc_camera_limit_side(&rect.left, &rect.width,
+ MT9M001_COLUMN_SKIP, MT9M001_MIN_WIDTH, MT9M001_MAX_WIDTH);
+
+ soc_camera_limit_side(&rect.top, &rect.height,
+ MT9M001_ROW_SKIP, MT9M001_MIN_HEIGHT, MT9M001_MAX_HEIGHT);
+
+ total_h = rect.height + mt9m001->y_skip_top + vblank;
/* Blanking and start values - default... */
- ret = reg_write(icd, MT9M001_HORIZONTAL_BLANKING, hblank);
+ ret = reg_write(client, MT9M001_HORIZONTAL_BLANKING, hblank);
if (!ret)
- ret = reg_write(icd, MT9M001_VERTICAL_BLANKING, vblank);
+ ret = reg_write(client, MT9M001_VERTICAL_BLANKING, vblank);
- /* The caller provides a supported format, as verified per
- * call to icd->try_fmt() */
+ /*
+ * The caller provides a supported format, as verified per
+ * call to icd->try_fmt()
+ */
if (!ret)
- ret = reg_write(icd, MT9M001_COLUMN_START, rect->left);
+ ret = reg_write(client, MT9M001_COLUMN_START, rect.left);
if (!ret)
- ret = reg_write(icd, MT9M001_ROW_START, rect->top);
+ ret = reg_write(client, MT9M001_ROW_START, rect.top);
if (!ret)
- ret = reg_write(icd, MT9M001_WINDOW_WIDTH, rect->width - 1);
+ ret = reg_write(client, MT9M001_WINDOW_WIDTH, rect.width - 1);
if (!ret)
- ret = reg_write(icd, MT9M001_WINDOW_HEIGHT,
- rect->height + icd->y_skip_top - 1);
+ ret = reg_write(client, MT9M001_WINDOW_HEIGHT,
+ rect.height + mt9m001->y_skip_top - 1);
if (!ret && mt9m001->autoexposure) {
- ret = reg_write(icd, MT9M001_SHUTTER_WIDTH,
- rect->height + icd->y_skip_top + vblank);
+ ret = reg_write(client, MT9M001_SHUTTER_WIDTH, total_h);
if (!ret) {
const struct v4l2_queryctrl *qctrl =
soc_camera_find_qctrl(icd->ops,
V4L2_CID_EXPOSURE);
- icd->exposure = (524 + (rect->height + icd->y_skip_top +
- vblank - 1) *
- (qctrl->maximum - qctrl->minimum)) /
+ mt9m001->exposure = (524 + (total_h - 1) *
+ (qctrl->maximum - qctrl->minimum)) /
1048 + qctrl->minimum;
}
}
+ if (!ret)
+ mt9m001->rect = rect;
+
return ret;
}
-static int mt9m001_try_fmt(struct soc_camera_device *icd,
- struct v4l2_format *f)
+static int mt9m001_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
- struct v4l2_pix_format *pix = &f->fmt.pix;
-
- if (pix->height < 32 + icd->y_skip_top)
- pix->height = 32 + icd->y_skip_top;
- if (pix->height > 1024 + icd->y_skip_top)
- pix->height = 1024 + icd->y_skip_top;
- if (pix->width < 48)
- pix->width = 48;
- if (pix->width > 1280)
- pix->width = 1280;
- pix->width &= ~0x01; /* has to be even, unsure why was ~3 */
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+
+ a->c = mt9m001->rect;
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
return 0;
}
-static int mt9m001_get_chip_id(struct soc_camera_device *icd,
- struct v4l2_chip_ident *id)
+static int mt9m001_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ a->bounds.left = MT9M001_COLUMN_SKIP;
+ a->bounds.top = MT9M001_ROW_SKIP;
+ a->bounds.width = MT9M001_MAX_WIDTH;
+ a->bounds.height = MT9M001_MAX_HEIGHT;
+ a->defrect = a->bounds;
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ a->pixelaspect.numerator = 1;
+ a->pixelaspect.denominator = 1;
- if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
+ return 0;
+}
+
+static int mt9m001_g_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+
+ mf->width = mt9m001->rect.width;
+ mf->height = mt9m001->rect.height;
+ mf->code = mt9m001->fmt->code;
+ mf->colorspace = mt9m001->fmt->colorspace;
+ mf->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static int mt9m001_s_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ struct v4l2_crop a = {
+ .c = {
+ .left = mt9m001->rect.left,
+ .top = mt9m001->rect.top,
+ .width = mf->width,
+ .height = mf->height,
+ },
+ };
+ int ret;
+
+ /* No support for scaling so far, just crop. TODO: use skipping */
+ ret = mt9m001_s_crop(sd, &a);
+ if (!ret) {
+ mf->width = mt9m001->rect.width;
+ mf->height = mt9m001->rect.height;
+ mt9m001->fmt = mt9m001_find_datafmt(mf->code,
+ mt9m001->fmts, mt9m001->num_fmts);
+ mf->colorspace = mt9m001->fmt->colorspace;
+ }
+
+ return ret;
+}
+
+static int mt9m001_try_fmt(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *mf)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ const struct mt9m001_datafmt *fmt;
+
+ v4l_bound_align_image(&mf->width, MT9M001_MIN_WIDTH,
+ MT9M001_MAX_WIDTH, 1,
+ &mf->height, MT9M001_MIN_HEIGHT + mt9m001->y_skip_top,
+ MT9M001_MAX_HEIGHT + mt9m001->y_skip_top, 0, 0);
+
+ if (mt9m001->fmts == mt9m001_colour_fmts)
+ mf->height = ALIGN(mf->height - 1, 2);
+
+ fmt = mt9m001_find_datafmt(mf->code, mt9m001->fmts,
+ mt9m001->num_fmts);
+ if (!fmt) {
+ fmt = mt9m001->fmt;
+ mf->code = fmt->code;
+ }
+
+ mf->colorspace = fmt->colorspace;
+
+ return 0;
+}
+
+static int mt9m001_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *id)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+
+ if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
return -EINVAL;
- if (id->match_chip != mt9m001->client->addr)
+ if (id->match.addr != client->addr)
return -ENODEV;
id->ident = mt9m001->model;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int mt9m001_get_register(struct soc_camera_device *icd,
- struct v4l2_register *reg)
+static int mt9m001_g_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ struct i2c_client *client = sd->priv;
- if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+ if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
- if (reg->match_chip != mt9m001->client->addr)
+ if (reg->match.addr != client->addr)
return -ENODEV;
- reg->val = reg_read(icd, reg->reg);
+ reg->size = 2;
+ reg->val = reg_read(client, reg->reg);
if (reg->val > 0xffff)
return -EIO;
return 0;
}
-static int mt9m001_set_register(struct soc_camera_device *icd,
- struct v4l2_register *reg)
+static int mt9m001_s_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ struct i2c_client *client = sd->priv;
- if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
+ if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
- if (reg->match_chip != mt9m001->client->addr)
+ if (reg->match.addr != client->addr)
return -ENODEV;
- if (reg_write(icd, reg->reg, reg->val) < 0)
+ if (reg_write(client, reg->reg, reg->val) < 0)
return -EIO;
return 0;
}
};
-static int mt9m001_video_probe(struct soc_camera_device *);
-static void mt9m001_video_remove(struct soc_camera_device *);
-static int mt9m001_get_control(struct soc_camera_device *, struct v4l2_control *);
-static int mt9m001_set_control(struct soc_camera_device *, struct v4l2_control *);
-
static struct soc_camera_ops mt9m001_ops = {
- .owner = THIS_MODULE,
- .probe = mt9m001_video_probe,
- .remove = mt9m001_video_remove,
- .init = mt9m001_init,
- .release = mt9m001_release,
- .start_capture = mt9m001_start_capture,
- .stop_capture = mt9m001_stop_capture,
- .set_fmt = mt9m001_set_fmt,
- .try_fmt = mt9m001_try_fmt,
.set_bus_param = mt9m001_set_bus_param,
.query_bus_param = mt9m001_query_bus_param,
.controls = mt9m001_controls,
.num_controls = ARRAY_SIZE(mt9m001_controls),
- .get_control = mt9m001_get_control,
- .set_control = mt9m001_set_control,
- .get_chip_id = mt9m001_get_chip_id,
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .get_register = mt9m001_get_register,
- .set_register = mt9m001_set_register,
-#endif
};
-static int mt9m001_get_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
+static int mt9m001_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
int data;
switch (ctrl->id) {
case V4L2_CID_VFLIP:
- data = reg_read(icd, MT9M001_READ_OPTIONS2);
+ data = reg_read(client, MT9M001_READ_OPTIONS2);
if (data < 0)
return -EIO;
ctrl->value = !!(data & 0x8000);
case V4L2_CID_EXPOSURE_AUTO:
ctrl->value = mt9m001->autoexposure;
break;
+ case V4L2_CID_GAIN:
+ ctrl->value = mt9m001->gain;
+ break;
+ case V4L2_CID_EXPOSURE:
+ ctrl->value = mt9m001->exposure;
+ break;
}
return 0;
}
-static int mt9m001_set_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
+static int mt9m001_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ struct soc_camera_device *icd = client->dev.platform_data;
const struct v4l2_queryctrl *qctrl;
int data;
switch (ctrl->id) {
case V4L2_CID_VFLIP:
if (ctrl->value)
- data = reg_set(icd, MT9M001_READ_OPTIONS2, 0x8000);
+ data = reg_set(client, MT9M001_READ_OPTIONS2, 0x8000);
else
- data = reg_clear(icd, MT9M001_READ_OPTIONS2, 0x8000);
+ data = reg_clear(client, MT9M001_READ_OPTIONS2, 0x8000);
if (data < 0)
return -EIO;
break;
unsigned long range = qctrl->default_value - qctrl->minimum;
data = ((ctrl->value - qctrl->minimum) * 8 + range / 2) / range;
- dev_dbg(&icd->dev, "Setting gain %d\n", data);
- data = reg_write(icd, MT9M001_GLOBAL_GAIN, data);
+ dev_dbg(&client->dev, "Setting gain %d\n", data);
+ data = reg_write(client, MT9M001_GLOBAL_GAIN, data);
if (data < 0)
return -EIO;
} else {
else
data = ((gain - 64) * 7 + 28) / 56 + 96;
- dev_dbg(&icd->dev, "Setting gain from %d to %d\n",
- reg_read(icd, MT9M001_GLOBAL_GAIN), data);
- data = reg_write(icd, MT9M001_GLOBAL_GAIN, data);
+ dev_dbg(&client->dev, "Setting gain from %d to %d\n",
+ reg_read(client, MT9M001_GLOBAL_GAIN), data);
+ data = reg_write(client, MT9M001_GLOBAL_GAIN, data);
if (data < 0)
return -EIO;
}
/* Success */
- icd->gain = ctrl->value;
+ mt9m001->gain = ctrl->value;
break;
case V4L2_CID_EXPOSURE:
/* mt9m001 has maximum == default */
unsigned long shutter = ((ctrl->value - qctrl->minimum) * 1048 +
range / 2) / range + 1;
- dev_dbg(&icd->dev, "Setting shutter width from %d to %lu\n",
- reg_read(icd, MT9M001_SHUTTER_WIDTH), shutter);
- if (reg_write(icd, MT9M001_SHUTTER_WIDTH, shutter) < 0)
+ dev_dbg(&client->dev,
+ "Setting shutter width from %d to %lu\n",
+ reg_read(client, MT9M001_SHUTTER_WIDTH),
+ shutter);
+ if (reg_write(client, MT9M001_SHUTTER_WIDTH, shutter) < 0)
return -EIO;
- icd->exposure = ctrl->value;
+ mt9m001->exposure = ctrl->value;
mt9m001->autoexposure = 0;
}
break;
case V4L2_CID_EXPOSURE_AUTO:
if (ctrl->value) {
const u16 vblank = 25;
- if (reg_write(icd, MT9M001_SHUTTER_WIDTH, icd->height +
- icd->y_skip_top + vblank) < 0)
+ unsigned int total_h = mt9m001->rect.height +
+ mt9m001->y_skip_top + vblank;
+ if (reg_write(client, MT9M001_SHUTTER_WIDTH,
+ total_h) < 0)
return -EIO;
qctrl = soc_camera_find_qctrl(icd->ops, V4L2_CID_EXPOSURE);
- icd->exposure = (524 + (icd->height + icd->y_skip_top + vblank - 1) *
- (qctrl->maximum - qctrl->minimum)) /
+ mt9m001->exposure = (524 + (total_h - 1) *
+ (qctrl->maximum - qctrl->minimum)) /
1048 + qctrl->minimum;
mt9m001->autoexposure = 1;
} else
return 0;
}
-/* Interface active, can use i2c. If it fails, it can indeed mean, that
- * this wasn't our capture interface, so, we wait for the right one */
-static int mt9m001_video_probe(struct soc_camera_device *icd)
+/*
+ * Interface active, can use i2c. If it fails, it can indeed mean, that
+ * this wasn't our capture interface, so, we wait for the right one
+ */
+static int mt9m001_video_probe(struct soc_camera_device *icd,
+ struct i2c_client *client)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
- struct soc_camera_link *icl = mt9m001->client->dev.platform_data;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
s32 data;
+ unsigned long flags;
int ret;
- /* We must have a parent by now. And it cannot be a wrong one.
- * So this entire test is completely redundant. */
+ /*
+ * 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)
return -ENODEV;
/* Enable the chip */
- data = reg_write(&mt9m001->icd, MT9M001_CHIP_ENABLE, 1);
- dev_dbg(&icd->dev, "write: %d\n", data);
+ data = reg_write(client, MT9M001_CHIP_ENABLE, 1);
+ dev_dbg(&client->dev, "write: %d\n", data);
/* Read out the chip version register */
- data = reg_read(icd, MT9M001_CHIP_VERSION);
+ data = reg_read(client, MT9M001_CHIP_VERSION);
/* must be 0x8411 or 0x8421 for colour sensor and 8431 for bw */
switch (data) {
case 0x8411:
case 0x8421:
mt9m001->model = V4L2_IDENT_MT9M001C12ST;
- icd->formats = mt9m001_colour_formats;
- if (gpio_is_valid(icl->gpio))
- icd->num_formats = ARRAY_SIZE(mt9m001_colour_formats);
- else
- icd->num_formats = 1;
+ mt9m001->fmts = mt9m001_colour_fmts;
break;
case 0x8431:
mt9m001->model = V4L2_IDENT_MT9M001C12STM;
- icd->formats = mt9m001_monochrome_formats;
- if (gpio_is_valid(icl->gpio))
- icd->num_formats = ARRAY_SIZE(mt9m001_monochrome_formats);
- else
- icd->num_formats = 1;
+ mt9m001->fmts = mt9m001_monochrome_fmts;
break;
default:
- ret = -ENODEV;
- dev_err(&icd->dev,
+ dev_err(&client->dev,
"No MT9M001 chip detected, register read %x\n", data);
- goto ei2c;
+ return -ENODEV;
}
- dev_info(&icd->dev, "Detected a MT9M001 chip ID %x (%s)\n", data,
+ mt9m001->num_fmts = 0;
+
+ /*
+ * This is a 10bit sensor, so by default we only allow 10bit.
+ * The platform may support different bus widths due to
+ * different routing of the data lines.
+ */
+ if (icl->query_bus_param)
+ flags = icl->query_bus_param(icl);
+ else
+ flags = SOCAM_DATAWIDTH_10;
+
+ if (flags & SOCAM_DATAWIDTH_10)
+ mt9m001->num_fmts++;
+ else
+ mt9m001->fmts++;
+
+ if (flags & SOCAM_DATAWIDTH_8)
+ mt9m001->num_fmts++;
+
+ mt9m001->fmt = &mt9m001->fmts[0];
+
+ dev_info(&client->dev, "Detected a MT9M001 chip ID %x (%s)\n", data,
data == 0x8431 ? "C12STM" : "C12ST");
- /* Now that we know the model, we can start video */
- ret = soc_camera_video_start(icd);
- if (ret)
- goto eisis;
+ ret = mt9m001_init(client);
+ if (ret < 0)
+ dev_err(&client->dev, "Failed to initialise the camera\n");
- return 0;
+ /* mt9m001_init() has reset the chip, returning registers to defaults */
+ mt9m001->gain = 64;
+ mt9m001->exposure = 255;
-eisis:
-ei2c:
return ret;
}
static void mt9m001_video_remove(struct soc_camera_device *icd)
{
- struct mt9m001 *mt9m001 = container_of(icd, struct mt9m001, icd);
+ struct soc_camera_link *icl = to_soc_camera_link(icd);
+
+ dev_dbg(&icd->dev, "Video removed: %p, %p\n",
+ icd->dev.parent, icd->vdev);
+ if (icl->free_bus)
+ icl->free_bus(icl);
+}
+
+static int mt9m001_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+
+ *lines = mt9m001->y_skip_top;
+
+ return 0;
+}
+
+static struct v4l2_subdev_core_ops mt9m001_subdev_core_ops = {
+ .g_ctrl = mt9m001_g_ctrl,
+ .s_ctrl = mt9m001_s_ctrl,
+ .g_chip_ident = mt9m001_g_chip_ident,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = mt9m001_g_register,
+ .s_register = mt9m001_s_register,
+#endif
+};
+
+static int mt9m001_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
+ enum v4l2_mbus_pixelcode *code)
+{
+ struct i2c_client *client = sd->priv;
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
- dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m001->client->addr,
- mt9m001->icd.dev.parent, mt9m001->icd.vdev);
- soc_camera_video_stop(&mt9m001->icd);
+ if (index >= mt9m001->num_fmts)
+ return -EINVAL;
+
+ *code = mt9m001->fmts[index].code;
+ return 0;
}
+static struct v4l2_subdev_video_ops mt9m001_subdev_video_ops = {
+ .s_stream = mt9m001_s_stream,
+ .s_mbus_fmt = mt9m001_s_fmt,
+ .g_mbus_fmt = mt9m001_g_fmt,
+ .try_mbus_fmt = mt9m001_try_fmt,
+ .s_crop = mt9m001_s_crop,
+ .g_crop = mt9m001_g_crop,
+ .cropcap = mt9m001_cropcap,
+ .enum_mbus_fmt = mt9m001_enum_fmt,
+};
+
+static struct v4l2_subdev_sensor_ops mt9m001_subdev_sensor_ops = {
+ .g_skip_top_lines = mt9m001_g_skip_top_lines,
+};
+
+static struct v4l2_subdev_ops mt9m001_subdev_ops = {
+ .core = &mt9m001_subdev_core_ops,
+ .video = &mt9m001_subdev_video_ops,
+ .sensor = &mt9m001_subdev_sensor_ops,
+};
+
static int mt9m001_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct mt9m001 *mt9m001;
- struct soc_camera_device *icd;
+ struct soc_camera_device *icd = client->dev.platform_data;
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
- struct soc_camera_link *icl = client->dev.platform_data;
+ struct soc_camera_link *icl;
int ret;
+ if (!icd) {
+ dev_err(&client->dev, "MT9M001: missing soc-camera data!\n");
+ return -EINVAL;
+ }
+
+ icl = to_soc_camera_link(icd);
if (!icl) {
dev_err(&client->dev, "MT9M001 driver needs platform data\n");
return -EINVAL;
if (!mt9m001)
return -ENOMEM;
- mt9m001->client = client;
- i2c_set_clientdata(client, mt9m001);
+ v4l2_i2c_subdev_init(&mt9m001->subdev, client, &mt9m001_subdev_ops);
/* Second stage probe - when a capture adapter is there */
- icd = &mt9m001->icd;
- icd->ops = &mt9m001_ops;
- icd->control = &client->dev;
- icd->x_min = 20;
- icd->y_min = 12;
- icd->x_current = 20;
- icd->y_current = 12;
- icd->width_min = 48;
- icd->width_max = 1280;
- icd->height_min = 32;
- icd->height_max = 1024;
- icd->y_skip_top = 1;
- icd->iface = icl->bus_id;
- /* Default datawidth - this is the only width this camera (normally)
- * supports. It is only with extra logic that it can support
- * other widths. Therefore it seems to be a sensible default. */
- mt9m001->datawidth = 10;
- /* Simulated autoexposure. If enabled, we calculate shutter width
- * ourselves in the driver based on vertical blanking and frame width */
+ icd->ops = &mt9m001_ops;
+
+ mt9m001->y_skip_top = 0;
+ mt9m001->rect.left = MT9M001_COLUMN_SKIP;
+ mt9m001->rect.top = MT9M001_ROW_SKIP;
+ mt9m001->rect.width = MT9M001_MAX_WIDTH;
+ mt9m001->rect.height = MT9M001_MAX_HEIGHT;
+
+ /*
+ * Simulated autoexposure. If enabled, we calculate shutter width
+ * ourselves in the driver based on vertical blanking and frame width
+ */
mt9m001->autoexposure = 1;
- ret = bus_switch_request(mt9m001, icl);
- if (ret)
- goto eswinit;
-
- ret = soc_camera_device_register(icd);
- if (ret)
- goto eisdr;
-
- return 0;
+ ret = mt9m001_video_probe(icd, client);
+ if (ret) {
+ icd->ops = NULL;
+ kfree(mt9m001);
+ }
-eisdr:
- bus_switch_release(mt9m001);
-eswinit:
- kfree(mt9m001);
return ret;
}
static int mt9m001_remove(struct i2c_client *client)
{
- struct mt9m001 *mt9m001 = i2c_get_clientdata(client);
+ struct mt9m001 *mt9m001 = to_mt9m001(client);
+ struct soc_camera_device *icd = client->dev.platform_data;
- soc_camera_device_unregister(&mt9m001->icd);
- bus_switch_release(mt9m001);
+ icd->ops = NULL;
+ mt9m001_video_remove(icd);
+ client->driver = NULL;
kfree(mt9m001);
return 0;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff