Re: [PATCH v7 36/36] drm/sun4i: hdmi: Switch to HDMI connector

Jernej Škrabec
2024-02-22T19:14:34Z

Dne četrtek, 22. februar 2024 ob 19:14:22 CET je Maxime Ripard napisal(a):
> The new HDMI connector infrastructure allows to remove some boilerplate,
> especially to generate infoframes. Let's switch to it.
>
> Signed-off-by: Maxime Ripard <mripard@kernel.org>

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Best regards,
Jernej

> ---
> drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 80 ++++++++++++++++++++++------------
> 1 file changed, 51 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
> index b7cf369b1906..8a9106a39f23 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
> @@ -36,30 +36,24 @@
> #define drm_connector_to_sun4i_hdmi(c) \
> container_of_const(c, struct sun4i_hdmi, connector)
>
> -static int sun4i_hdmi_setup_avi_infoframes(struct sun4i_hdmi *hdmi,
> - struct drm_display_mode *mode)
> +static int sun4i_hdmi_write_infoframe(struct drm_connector *connector,
> + enum hdmi_infoframe_type type,
> + const u8 *buffer, size_t len)
> {
> - struct hdmi_avi_infoframe frame;
> - u8 buffer[17];
> - int i, ret;
> + struct sun4i_hdmi *hdmi = drm_connector_to_sun4i_hdmi(connector);
> + int i;
>
> - ret = drm_hdmi_avi_infoframe_from_display_mode(&frame,
> - &hdmi->connector, mode);
> - if (ret < 0) {
> - DRM_ERROR("Failed to get infoframes from mode\n");
> - return ret;
> + if (type != HDMI_INFOFRAME_TYPE_AVI) {
> + drm_err(connector->dev,
> + "Unsupported infoframe type: %u\n", type);
> + return 0;
> }
>
> - ret = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
> - if (ret < 0) {
> - DRM_ERROR("Failed to pack infoframes\n");
> - return ret;
> - }
> -
> - for (i = 0; i < sizeof(buffer); i++)
> + for (i = 0; i < len; i++)
> writeb(buffer[i], hdmi->base + SUN4I_HDMI_AVI_INFOFRAME_REG(i));
>
> return 0;
> +
> }
>
> static void sun4i_hdmi_disable(struct drm_encoder *encoder,
> @@ -82,14 +76,18 @@ static void sun4i_hdmi_enable(struct drm_encoder *encoder,
> {
> struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
> struct sun4i_hdmi *hdmi = drm_encoder_to_sun4i_hdmi(encoder);
> - struct drm_display_info *display = &hdmi->connector.display_info;
> + struct drm_connector *connector = &hdmi->connector;
> + struct drm_display_info *display = &connector->display_info;
> + struct drm_connector_state *conn_state =
> + drm_atomic_get_new_connector_state(state, connector);
> + unsigned long long tmds_rate = conn_state->hdmi.tmds_char_rate;
> unsigned int x, y;
> u32 val = 0;
>
> DRM_DEBUG_DRIVER("Enabling the HDMI Output\n");
>
> - clk_set_rate(hdmi->mod_clk, mode->crtc_clock * 1000);
> - clk_set_rate(hdmi->tmds_clk, mode->crtc_clock * 1000);
> + clk_set_rate(hdmi->mod_clk, tmds_rate);
> + clk_set_rate(hdmi->tmds_clk, tmds_rate);
>
> /* Set input sync enable */
> writel(SUN4I_HDMI_UNKNOWN_INPUT_SYNC,
> @@ -142,7 +140,8 @@ static void sun4i_hdmi_enable(struct drm_encoder *encoder,
>
> clk_prepare_enable(hdmi->tmds_clk);
>
> - sun4i_hdmi_setup_avi_infoframes(hdmi, mode);
> + drm_atomic_helper_connector_hdmi_update_infoframes(connector, state);
> +
> val |= SUN4I_HDMI_PKT_CTRL_TYPE(0, SUN4I_HDMI_PKT_AVI);
> val |= SUN4I_HDMI_PKT_CTRL_TYPE(1, SUN4I_HDMI_PKT_END);
> writel(val, hdmi->base + SUN4I_HDMI_PKT_CTRL_REG(0));
> @@ -195,7 +194,7 @@ static int sun4i_hdmi_connector_atomic_check(struct drm_connector *connector,
> enum drm_mode_status status;
>
> status = sun4i_hdmi_connector_clock_valid(connector, mode,
> - mode->clock * 1000);
> + conn_state->hdmi.tmds_char_rate);
> if (status != MODE_OK)
> return -EINVAL;
>
> @@ -206,8 +205,11 @@ static enum drm_mode_status
> sun4i_hdmi_connector_mode_valid(struct drm_connector *connector,
> struct drm_display_mode *mode)
> {
> - return sun4i_hdmi_connector_clock_valid(connector, mode,
> - mode->clock * 1000);
> + unsigned long long rate =
> + drm_connector_hdmi_compute_mode_clock(mode, 8,
> + HDMI_COLORSPACE_RGB);
> +
> + return sun4i_hdmi_connector_clock_valid(connector, mode, rate);
> }
>
> static int sun4i_hdmi_get_modes(struct drm_connector *connector)
> @@ -253,6 +255,11 @@ static struct i2c_adapter *sun4i_hdmi_get_ddc(struct device *dev)
> return ddc;
> }
>
> +static const struct drm_connector_hdmi_funcs sun4i_hdmi_hdmi_connector_funcs = {
> + .tmds_char_rate_valid = sun4i_hdmi_connector_clock_valid,
> + .write_infoframe = sun4i_hdmi_write_infoframe,
> +};
> +
> static const struct drm_connector_helper_funcs sun4i_hdmi_connector_helper_funcs = {
> .atomic_check = sun4i_hdmi_connector_atomic_check,
> .mode_valid = sun4i_hdmi_connector_mode_valid,
> @@ -274,11 +281,17 @@ sun4i_hdmi_connector_detect(struct drm_connector *connector, bool force)
> return connector_status_connected;
> }
>
> +static void sun4i_hdmi_connector_reset(struct drm_connector *connector)
> +{
> + drm_atomic_helper_connector_reset(connector);
> + __drm_atomic_helper_connector_hdmi_reset(connector, connector->state);
> +}
> +
> static const struct drm_connector_funcs sun4i_hdmi_connector_funcs = {
> .detect = sun4i_hdmi_connector_detect,
> .fill_modes = drm_helper_probe_single_connector_modes,
> .destroy = drm_connector_cleanup,
> - .reset = drm_atomic_helper_connector_reset,
> + .reset = sun4i_hdmi_connector_reset,
> .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> };
> @@ -637,10 +650,19 @@ static int sun4i_hdmi_bind(struct device *dev, struct device *master,
>
> drm_connector_helper_add(&hdmi->connector,
> &sun4i_hdmi_connector_helper_funcs);
> - ret = drm_connector_init_with_ddc(drm, &hdmi->connector,
> - &sun4i_hdmi_connector_funcs,
> - DRM_MODE_CONNECTOR_HDMIA,
> - hdmi->ddc_i2c);
> + ret = drmm_connector_hdmi_init(drm, &hdmi->connector,
> + /*
> + * NOTE: Those are likely to be
> + * wrong, but I couldn't find the
> + * actual ones in the BSP.
> + */
> + "AW", "HDMI",
> + &sun4i_hdmi_connector_funcs,
> + &sun4i_hdmi_hdmi_connector_funcs,
> + DRM_MODE_CONNECTOR_HDMIA,
> + hdmi->ddc_i2c,
> + BIT(HDMI_COLORSPACE_RGB),
> + 8);
> if (ret) {
> dev_err(dev,
> "Couldn't initialise the HDMI connector\n");