On 06/15/2016 12:49 AM, Steve Longerbeam wrote:
> + usleep_range(5000, 5001);
That's kind of not how usleep_range() (the emphasis is on range) is supposed
to be used. You typically dont care too much about the upper limit here so
something like maybe 10000 is more appropriate.
> +static int adv7180_of_parse(struct adv7180_state *state)
> +{
> + struct i2c_client *client = state->client;
> + struct device_node *np = client->dev.of_node;
> + int ret;
> +
> + ret = of_get_named_gpio(np, "pwdn-gpio", 0);
> +
> + if (gpio_is_valid(ret)) {
> + state->pwdn_gpio = ret;
> + ret = devm_gpio_request_one(&client->dev,
> + state->pwdn_gpio,
> + GPIOF_OUT_INIT_HIGH,
> + "adv7180_pwdn");
This should use the new GPIO descriptor API. That will also make the code
devicetree independent. Otherwise patch looks OK.
> + if (ret < 0) {
> + v4l_err(client, "request for power pin failed\n");
> + return ret;
> + }
> + } else {
> + if (ret == -EPROBE_DEFER)
> + return ret;
> + /* assume a power-down gpio is not required */
> + state->pwdn_gpio = -1;
> + }
> +
> + return 0;
> +}
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