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Message-Id: <20231031-kms-hdmi-connector-state-v3-37-328b0fae43a7@kernel.org>
Date: Tue, 31 Oct 2023 17:48:50 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>, Emma Anholt <emma@...olt.net>,
Jonathan Corbet <corbet@....net>,
Sandy Huang <hjc@...k-chips.com>,
Heiko Stübner <heiko@...ech.de>,
Chen-Yu Tsai <wens@...e.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>
Cc: Hans Verkuil <hverkuil@...all.nl>, dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
linux-rockchip@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
Maxime Ripard <mripard@...nel.org>
Subject: [PATCH RFC v3 37/37] drm/sun4i: hdmi: Switch to HDMI connector
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@...nel.org>
---
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");
--
2.41.0
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