return -ENODEV;
}
+ if (dev->power_on)
+ return 0; /* Already on */
+
/* power control */
ret = power_ctrl(sd, 1);
if (ret)
/* according to DS, 20ms is needed between PWDN and i2c access */
msleep(20);
+ dev->power_on = true;
return 0;
fail_clk:
return -ENODEV;
}
+ if (!dev->power_on)
+ return 0; /* Already off */
+
ret = dev->platform_data->flisclk_ctrl(sd, 0);
if (ret)
dev_err(&client->dev, "flisclk failed\n");
/* power control */
ret = power_ctrl(sd, 0);
- if (ret)
+ if (ret) {
dev_err(&client->dev, "vprog failed.\n");
+ return ret;
+ }
- return ret;
+ dev->power_on = false;
+ return 0;
}
static int ov2680_s_power(struct v4l2_subdev *sd, int on)
dev_dbg(&client->dev, "%s: %dx%d\n",
__func__, fmt->width, fmt->height);
- // IS IT NEEDED?
+ /* s_power has not been called yet for std v4l2 clients (camorama) */
power_up(sd);
ret = ov2680_write_reg_array(client, dev->res->regs);
if (ret)
(struct camera_sensor_platform_data *)platform_data;
mutex_lock(&dev->input_lock);
- /*
- * power off the module, then power on it in future
- * as first power on by board may not fulfill the
- * power on sequqence needed by the module
- */
- ret = power_down(sd);
- if (ret) {
- dev_err(&client->dev, "ov2680 power-off err.\n");
- goto fail_power_off;
- }
ret = power_up(sd);
if (ret) {
fail_power_on:
power_down(sd);
dev_err(&client->dev, "sensor power-gating failed\n");
-fail_power_off:
mutex_unlock(&dev->input_lock);
return ret;
}