2024-05-09 16:42:52

by Doug Anderson

[permalink] [raw]
Subject: Re: [PATCH v5 2/7] drm/panel: himax-hx83102: Break out as separate driver

Hi,

On Wed, May 8, 2024 at 6:53 PM Cong Yang
<[email protected]> wrote:
>
> +static int hx83102_enable(struct drm_panel *panel)
> +{
> + struct hx83102 *ctx = panel_to_hx83102(panel);
> + struct mipi_dsi_device *dsi = ctx->dsi;
> + struct device *dev = &dsi->dev;
> + int ret;
> +
> + ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> + if (ret) {
> + dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
> + return ret;
> + }
> +
> + msleep(120);
> +
> + ret = mipi_dsi_dcs_set_display_on(dsi);
> + if (ret) {
> + dev_err(dev, "Failed to turn on the display: %d\n", ret);
> + return ret;
> + }

FWIW, I think that the mipi_dsi_dcs_exit_sleep_mode(), msleep(120),
and mipi_dsi_dcs_set_display_on() should also be in the prepare() to
match how they were in the boe-tv101wum-nl6.c driver, right? Then the
enable() would be left with just the simple "msleep(130)".

I know it doesn't make much difference and it probably doesn't matter
and maybe I'm just being a little nitpicky, but given that the
prepare() and enable() functions are unique phases I'd rather be
explicit if we've moving something from one phase to the other.


-Doug