Hi,
I'm going to report the (few) things which are also present in
Sylwester's tree.
On 09/06/2012 05:08 PM, Sangwook Lee wrote:
> This patch adds driver for S5K4ECGX sensor with embedded ISP SoC,
> S5K4ECGX, which is a 5M CMOS Image sensor from Samsung
> The driver implements preview mode of the S5K4ECGX sensor.
> capture (snapshot) operation, face detection are missing now.
> Following controls are supported:
> contrast/saturation/brightness/sharpness
>
> Signed-off-by: Sangwook Lee <sangwook.lee@xxxxxxxxxx>
> Reviewed-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
[snip]
> +static const char * const s5k4ecgx_supply_names[] = {
> + /*
> + * Usually 2.8V is used for analog power (vdda)
> + * and digital IO (vddio, vddd_core)
s/vddd_core/vddcore
[snip]
> +static int s5k4ecgx_load_firmware(struct v4l2_subdev *sd)
> +{
> + const struct firmware *fw;
> + int err, i, regs_num;
> + struct i2c_client *client = v4l2_get_subdevdata(sd);
> + u16 val;
> + u32 addr, crc, crc_file, addr_inc = 0;
> +
> + err = request_firmware(&fw, S5K4ECGX_FIRMWARE, sd->v4l2_dev->dev);
> + if (err) {
> + v4l2_err(sd, "Failed to read firmware %s\n", S5K4ECGX_FIRMWARE);
> + return err;
> + }
> + regs_num = *(u32 *)(fw->data);
> + v4l2_dbg(3, debug, sd, "FW: %s size %d register sets %d\n",
> + S5K4ECGX_FIRMWARE, fw->size, regs_num);
> + regs_num++; /* Add header */
> + if (fw->size != regs_num * FW_RECORD_SIZE + FW_CRC_SIZE) {
> + err = -EINVAL;
> + goto fw_out;
> + }
> + crc_file = *(u32 *)(fw->data + regs_num * FW_RECORD_SIZE);
Depending on the value of regs_num, this may result in unaligned access
[snip]
> +static int s5k4ecgx_s_power(struct v4l2_subdev *sd, int on)
> +{
> + struct s5k4ecgx *priv = to_s5k4ecgx(sd);
> + int ret;
> +
> + v4l2_dbg(1, debug, sd, "Switching %s\n", on ? "on" : "off");
> +
> + if (on) {
> + ret = __s5k4ecgx_power_on(priv);
> + if (ret < 0)
> + return ret;
> + /* Time to stabilize sensor */
> + msleep(100);
> + ret = s5k4ecgx_init_sensor(sd);
> + if (ret < 0)
> + __s5k4ecgx_power_off(priv);
> + else
> + priv->set_params = 1;
> + } else {
> + ret = __s5k4ecgx_power_off(priv);
> + }
> +
> + return 0;
return ret;
[snip]
> +static int s5k4ecgx_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + int ret, i;
> + struct v4l2_subdev *sd;
> + struct s5k4ecgx *priv;
> + struct s5k4ecgx_platform_data *pdata = client->dev.platform_data;
> +
> + if (pdata == NULL) {
> + dev_err(&client->dev, "platform data is missing!\n");
> + return -EINVAL;
> + }
> + priv = devm_kzalloc(&client->dev, sizeof(struct s5k4ecgx), GFP_KERNEL);
> + if (!priv)
> + return -ENOMEM;
> +
> + mutex_init(&priv->lock);
> + priv->streaming = 0;
> +
> + sd = &priv->sd;
> + /* Registering subdev */
> + v4l2_i2c_subdev_init(sd, client, &s5k4ecgx_ops);
> + strlcpy(sd->name, S5K4ECGX_DRIVER_NAME, sizeof(sd->name));
> +
> + sd->internal_ops = &s5k4ecgx_subdev_internal_ops;
> + /* Support v4l2 sub-device user space API */
> + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
> +
> + priv->pad.flags = MEDIA_PAD_FL_SOURCE;
> + sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
> + ret = media_entity_init(&sd->entity, 1, &priv->pad, 0);
> + if (ret)
> + return ret;
> +
> + ret = s5k4ecgx_config_gpios(priv, pdata);
> + if (ret) {
> + dev_err(&client->dev, "Failed to set gpios\n");
> + goto out_err1;
> + }
> + for (i = 0; i < S5K4ECGX_NUM_SUPPLIES; i++)
> + priv->supplies[i].supply = s5k4ecgx_supply_names[i];
> +
> + ret = devm_regulator_bulk_get(&client->dev, S5K4ECGX_NUM_SUPPLIES,
> + priv->supplies);
> + if (ret) {
> + dev_err(&client->dev, "Failed to get regulators\n");
> + goto out_err2;
> + }
> + ret = s5k4ecgx_init_v4l2_ctrls(priv);
> + if (ret)
> + goto out_err2;
> +
> + priv->curr_pixfmt = &s5k4ecgx_formats[0];
> + priv->curr_frmsize = &s5k4ecgx_prev_sizes[0];
> +
> + return 0;
> +
> +out_err2:
> + s5k4ecgx_free_gpios(priv);
> +out_err1:
> + media_entity_cleanup(&priv->sd.entity);
> +
> + return ret;
> +}
> +
> +static int s5k4ecgx_remove(struct i2c_client *client)
> +{
> + struct v4l2_subdev *sd = i2c_get_clientdata(client);
> + struct s5k4ecgx *priv = to_s5k4ecgx(sd);
> +
> + mutex_destroy(&priv->lock);
> + v4l2_device_unregister_subdev(sd);
> + v4l2_ctrl_handler_free(&priv->handler);
> + media_entity_cleanup(&sd->entity);
> +
> + return 0;
Maybe s5k4ecgx_free_gpios() should be called?
Regards,
Francesco
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