/*
* Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP
*
- * Copyright (C) 2010 Samsung Electronics
+ * Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd.
* Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com>
*
* Initial register configuration based on a driver authored by
* 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.
+ * (at your option) any later version.
*/
#include <linux/delay.h>
struct noon010_info {
struct v4l2_subdev sd;
+ struct media_pad pad;
struct v4l2_ctrl_handler hdl;
const struct noon010pc30_platform_data *pdata;
+ struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES];
+ u32 gpio_nreset;
+ u32 gpio_nstby;
+
+ /* Protects the struct members below */
+ struct mutex lock;
+
const struct noon010_format *curr_fmt;
const struct noon010_frmsize *curr_win;
+ unsigned int apply_new_cfg:1;
+ unsigned int streaming:1;
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 {
return ret;
}
+/* Called with struct noon010_info.lock mutex held */
static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip)
{
struct noon010_info *info = to_noon010(sd);
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;
+ int ret = cam_i2c_write(sd, VDO_CTL_REG(0),
+ info->curr_win->vid_ctl1);
+ if (ret)
+ return ret;
+ return cam_i2c_write(sd, ISP_CTL_REG(0),
+ info->curr_fmt->ispctl1_reg);
}
/* Find nearest matching image pixel size. */
-static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf)
+static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf,
+ const struct noon010_frmsize **size)
{
unsigned int min_err = ~0;
int i = ARRAY_SIZE(noon010_sizes);
if (match) {
mf->width = match->width;
mf->height = match->height;
+ if (size)
+ *size = match;
return 0;
}
return -EINVAL;
}
+/* Called with info.lock mutex held */
static int power_enable(struct noon010_info *info)
{
int ret;
return 0;
}
+/* Called with info.lock mutex held */
static int power_disable(struct noon010_info *info)
{
int ret;
static int noon010_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
+ struct noon010_info *info = to_noon010(sd);
+ int ret = 0;
v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
__func__, ctrl->id, ctrl->val);
+ mutex_lock(&info->lock);
+ /*
+ * If the device is not powered up by the host driver do
+ * not apply any controls to H/W at this time. Instead
+ * the controls will be restored right after power-up.
+ */
+ if (!info->power)
+ goto unlock;
+
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
- return noon010_enable_autowhitebalance(sd, ctrl->val);
+ ret = noon010_enable_autowhitebalance(sd, ctrl->val);
+ break;
case V4L2_CID_BLUE_BALANCE:
- return cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val);
+ ret = cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val);
+ break;
case V4L2_CID_RED_BALANCE:
- return cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val);
+ ret = cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val);
+ break;
default:
- return -EINVAL;
+ ret = -EINVAL;
}
+unlock:
+ mutex_unlock(&info->lock);
+ return ret;
}
-static int noon010_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
- enum v4l2_mbus_pixelcode *code)
+static int noon010_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
{
- if (!code || index >= ARRAY_SIZE(noon010_formats))
+ if (code->index >= ARRAY_SIZE(noon010_formats))
return -EINVAL;
- *code = noon010_formats[index].code;
+ code->code = noon010_formats[code->index].code;
return 0;
}
-static int noon010_g_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf)
+static int noon010_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
{
struct noon010_info *info = to_noon010(sd);
- int ret;
-
- if (!mf)
- return -EINVAL;
+ struct v4l2_mbus_framefmt *mf;
- if (!info->curr_win || !info->curr_fmt) {
- ret = noon010_set_params(sd);
- if (ret)
- return ret;
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ if (fh) {
+ mf = v4l2_subdev_get_try_format(fh, 0);
+ fmt->format = *mf;
+ }
+ return 0;
}
+ mf = &fmt->format;
- 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;
+ mutex_lock(&info->lock);
+ 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;
+ mutex_unlock(&info->lock);
return 0;
}
/* Return nearest media bus frame format. */
-static const struct noon010_format *try_fmt(struct v4l2_subdev *sd,
+static const struct noon010_format *noon010_try_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
int i = ARRAY_SIZE(noon010_formats);
- noon010_try_frame_size(mf);
-
- while (i--)
+ 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)
+static int noon010_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
{
struct noon010_info *info = to_noon010(sd);
+ const struct noon010_frmsize *size = NULL;
+ const struct noon010_format *nf;
+ struct v4l2_mbus_framefmt *mf;
+ int ret = 0;
- if (!sd || !mf)
- return -EINVAL;
-
- info->curr_fmt = try_fmt(sd, mf);
+ nf = noon010_try_fmt(sd, &fmt->format);
+ noon010_try_frame_size(&fmt->format, &size);
+ fmt->format.colorspace = V4L2_COLORSPACE_JPEG;
- return noon010_set_params(sd);
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ if (fh) {
+ mf = v4l2_subdev_get_try_format(fh, 0);
+ *mf = fmt->format;
+ }
+ return 0;
+ }
+ mutex_lock(&info->lock);
+ if (!info->streaming) {
+ info->apply_new_cfg = 1;
+ info->curr_fmt = nf;
+ info->curr_win = size;
+ } else {
+ ret = -EBUSY;
+ }
+ mutex_unlock(&info->lock);
+ return ret;
}
static int noon010_base_config(struct v4l2_subdev *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_stream(struct v4l2_subdev *sd, int on)
+{
+ struct noon010_info *info = to_noon010(sd);
+ int ret = 0;
+
+ mutex_lock(&info->lock);
+ if (!info->streaming != !on) {
+ ret = noon010_power_ctrl(sd, false, !on);
+ if (!ret)
+ info->streaming = on;
+ }
+ if (!ret && on && info->apply_new_cfg) {
+ ret = noon010_set_params(sd);
+ if (!ret)
+ info->apply_new_cfg = 0;
+ }
+ mutex_unlock(&info->lock);
+ return ret;
+}
+
static int noon010_g_chip_ident(struct v4l2_subdev *sd,
struct v4l2_dbg_chip_ident *chip)
{
return 0;
}
+static int noon010_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(fh, 0);
+
+ mf->width = noon010_sizes[0].width;
+ mf->height = noon010_sizes[0].height;
+ mf->code = noon010_formats[0].code;
+ mf->colorspace = V4L2_COLORSPACE_JPEG;
+ mf->field = V4L2_FIELD_NONE;
+ return 0;
+}
+
+static const struct v4l2_subdev_internal_ops noon010_subdev_internal_ops = {
+ .open = noon010_open,
+};
+
static const struct v4l2_ctrl_ops noon010_ctrl_ops = {
.s_ctrl = noon010_s_ctrl,
};
.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 struct v4l2_subdev_pad_ops noon010_pad_ops = {
+ .enum_mbus_code = noon010_enum_mbus_code,
+ .get_fmt = noon010_get_fmt,
+ .set_fmt = noon010_set_fmt,
+};
+
+static struct v4l2_subdev_video_ops noon010_video_ops = {
+ .s_stream = noon010_s_stream,
};
static const struct v4l2_subdev_ops noon010_ops = {
.core = &noon010_core_ops,
+ .pad = &noon010_pad_ops,
.video = &noon010_video_ops,
};
if (!info)
return -ENOMEM;
+ mutex_init(&info->lock);
sd = &info->sd;
strlcpy(sd->name, MODULE_NAME, sizeof(sd->name));
v4l2_i2c_subdev_init(sd, client, &noon010_ops);
+ sd->internal_ops = &noon010_subdev_internal_ops;
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
v4l2_ctrl_handler_init(&info->hdl, 3);
v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
if (ret)
goto np_reg_err;
+ info->pad.flags = MEDIA_PAD_FL_SOURCE;
+ sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+ ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
+ if (ret < 0)
+ goto np_me_err;
+
ret = noon010_detect(client, info);
if (!ret)
return 0;
- /* the sensor detection failed */
+np_me_err:
regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
np_reg_err:
if (gpio_is_valid(info->gpio_nstby))
if (gpio_is_valid(info->gpio_nstby))
gpio_free(info->gpio_nstby);
+ media_entity_cleanup(&sd->entity);
kfree(info);
return 0;
}
projects / platform / kernel / linux-rpi.git / commitdiff