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From:   Maxime Ripard <maxime@cerno.tech>
To:     Jernej Skrabec <jernej.skrabec@gmail.com>,
        Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
        Chen-Yu Tsai <wens@csie.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Jerome Brunet <jbrunet@baylibre.com>,
        Samuel Holland <samuel@sholland.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Daniel Vetter <daniel@ffwll.ch>, Emma Anholt <emma@anholt.net>,
        David Airlie <airlied@linux.ie>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>,
        Kevin Hilman <khilman@baylibre.com>,
        Neil Armstrong <narmstrong@baylibre.com>,
        Maxime Ripard <mripard@kernel.org>
Cc:     Maxime Ripard <maxime@cerno.tech>, linux-sunxi@lists.linux.dev,
        linux-kernel@vger.kernel.org, Phil Elwell <phil@raspberrypi.com>,
        Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>,
        linux-arm-kernel@lists.infradead.org,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Dave Stevenson <dave.stevenson@raspberrypi.com>,
        linux-amlogic@lists.infradead.org, dri-devel@lists.freedesktop.org,
        Dom Cobley <dom@raspberrypi.com>
Subject: [PATCH v1 23/35] drm/vc4: vec: Convert to the new TV mode property
Date:   Fri, 29 Jul 2022 18:35:06 +0200
Message-Id: <20220728-rpi-analog-tv-properties-v1-23-3d53ae722097@cerno.tech>
In-Reply-To: <20220728-rpi-analog-tv-properties-v1-0-3d53ae722097@cerno.tech>
References: <20220728-rpi-analog-tv-properties-v1-0-3d53ae722097@cerno.tech>
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Now that the core can deal fine with analog TV modes, let's convert the vc4
VEC driver to leverage those new features.

We've added some backward compatibility to support the old TV mode property
and translate it into the new TV norm property.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c
index 6f4536bf537f..e40b55de1b3c 100644
--- a/drivers/gpu/drm/vc4/vc4_vec.c
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
@@ -172,6 +172,8 @@ struct vc4_vec {
 
 	struct clk *clock;
 
+	struct drm_property *tv_mode_property;
+
 	struct debugfs_regset32 regset;
 };
 
@@ -184,6 +186,12 @@ encoder_to_vc4_vec(struct drm_encoder *encoder)
 	return container_of(encoder, struct vc4_vec, encoder.base);
 }
 
+static inline struct vc4_vec *
+connector_to_vc4_vec(struct drm_connector *connector)
+{
+	return container_of(connector, struct vc4_vec, connector);
+}
+
 enum vc4_vec_tv_mode_id {
 	VC4_VEC_TV_MODE_NTSC,
 	VC4_VEC_TV_MODE_NTSC_J,
@@ -192,7 +200,7 @@ enum vc4_vec_tv_mode_id {
 };
 
 struct vc4_vec_tv_mode {
-	const struct drm_display_mode *mode;
+	unsigned int mode;
 	u32 config0;
 	u32 config1;
 	u32 custom_freq;
@@ -226,28 +234,50 @@ static const struct debugfs_reg32 vec_regs[] = {
 };
 
 static const struct vc4_vec_tv_mode vc4_vec_tv_modes[] = {
-	[VC4_VEC_TV_MODE_NTSC] = {
-		.mode = &drm_mode_480i,
+	{
+		.mode = DRM_MODE_TV_NORM_NTSC_M,
 		.config0 = VEC_CONFIG0_NTSC_STD | VEC_CONFIG0_PDEN,
 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
 	},
-	[VC4_VEC_TV_MODE_NTSC_J] = {
-		.mode = &drm_mode_480i,
+	{
+		.mode = DRM_MODE_TV_NORM_NTSC_J,
 		.config0 = VEC_CONFIG0_NTSC_STD,
 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
 	},
-	[VC4_VEC_TV_MODE_PAL] = {
-		.mode = &drm_mode_576i,
+	{
+		.mode = DRM_MODE_TV_NORM_PAL_B,
 		.config0 = VEC_CONFIG0_PAL_BDGHI_STD,
 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
 	},
-	[VC4_VEC_TV_MODE_PAL_M] = {
-		.mode = &drm_mode_480i,
+	{
+		.mode = DRM_MODE_TV_NORM_PAL_M,
 		.config0 = VEC_CONFIG0_PAL_M_STD,
 		.config1 = VEC_CONFIG1_C_CVBS_CVBS,
 	},
 };
 
+static inline const struct vc4_vec_tv_mode *
+vc4_vec_tv_mode_lookup(unsigned int mode)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(vc4_vec_tv_modes); i++) {
+		const struct vc4_vec_tv_mode *tv_mode = &vc4_vec_tv_modes[i];
+
+		if (tv_mode->mode == mode)
+			return tv_mode;
+	}
+
+	return NULL;
+}
+
+static const struct drm_prop_enum_list tv_mode_names[] = {
+	{ VC4_VEC_TV_MODE_NTSC, "NTSC", },
+	{ VC4_VEC_TV_MODE_NTSC_J, "NTSC-J", },
+	{ VC4_VEC_TV_MODE_PAL, "PAL", },
+	{ VC4_VEC_TV_MODE_PAL_M, "PAL-M", },
+};
+
 static enum drm_connector_status
 vc4_vec_connector_detect(struct drm_connector *connector, bool force)
 {
@@ -262,11 +292,17 @@ void vc4_vec_connector_reset(struct drm_connector *connector)
 
 static int vc4_vec_connector_get_modes(struct drm_connector *connector)
 {
-	struct drm_connector_state *state = connector->state;
 	struct drm_display_mode *mode;
 
-	mode = drm_mode_duplicate(connector->dev,
-				  vc4_vec_tv_modes[state->tv.mode].mode);
+	mode = drm_mode_duplicate(connector->dev, &drm_mode_480i);
+	if (!mode) {
+		DRM_ERROR("Failed to create a new display mode\n");
+		return -ENOMEM;
+	}
+
+	drm_mode_probed_add(connector, mode);
+
+	mode = drm_mode_duplicate(connector->dev, &drm_mode_576i);
 	if (!mode) {
 		DRM_ERROR("Failed to create a new display mode\n");
 		return -ENOMEM;
@@ -277,21 +313,95 @@ static int vc4_vec_connector_get_modes(struct drm_connector *connector)
 	return 1;
 }
 
+static int
+vc4_vec_connector_set_property(struct drm_connector *connector,
+			       struct drm_connector_state *state,
+			       struct drm_property *property,
+			       uint64_t val)
+{
+	struct vc4_vec *vec = connector_to_vc4_vec(connector);
+
+	if (property != vec->tv_mode_property)
+		return -EINVAL;
+
+	switch (val) {
+	case VC4_VEC_TV_MODE_NTSC:
+		state->tv.norm = DRM_MODE_TV_NORM_NTSC_M;
+		break;
+
+	case VC4_VEC_TV_MODE_NTSC_J:
+		state->tv.norm = DRM_MODE_TV_NORM_NTSC_J;
+		break;
+
+	case VC4_VEC_TV_MODE_PAL:
+		state->tv.norm = DRM_MODE_TV_NORM_PAL_B;
+		break;
+
+	case VC4_VEC_TV_MODE_PAL_M:
+		state->tv.norm = DRM_MODE_TV_NORM_PAL_M;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int
+vc4_vec_connector_get_property(struct drm_connector *connector,
+			       const struct drm_connector_state *state,
+			       struct drm_property *property,
+			       uint64_t *val)
+{
+	struct vc4_vec *vec = connector_to_vc4_vec(connector);
+
+	if (property != vec->tv_mode_property)
+		return -EINVAL;
+
+	switch (state->tv.norm) {
+	case DRM_MODE_TV_NORM_NTSC_J:
+		*val = VC4_VEC_TV_MODE_NTSC_J;
+		break;
+
+	case DRM_MODE_TV_NORM_NTSC_M:
+		*val = VC4_VEC_TV_MODE_NTSC;
+		break;
+
+	case DRM_MODE_TV_NORM_PAL_B:
+		*val = VC4_VEC_TV_MODE_PAL;
+		break;
+
+	case DRM_MODE_TV_NORM_PAL_M:
+		*val = VC4_VEC_TV_MODE_PAL_M;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static const struct drm_connector_funcs vc4_vec_connector_funcs = {
 	.detect = vc4_vec_connector_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.reset = vc4_vec_connector_reset,
 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+	.atomic_get_property = vc4_vec_connector_get_property,
+	.atomic_set_property = vc4_vec_connector_set_property,
 };
 
 static const struct drm_connector_helper_funcs vc4_vec_connector_helper_funcs = {
+	.atomic_check = drm_atomic_helper_connector_tv_check,
 	.get_modes = vc4_vec_connector_get_modes,
 };
 
 static int vc4_vec_connector_init(struct drm_device *dev, struct vc4_vec *vec)
 {
 	struct drm_connector *connector = &vec->connector;
+	struct drm_property *prop;
 	int ret;
 
 	connector->interlace_allowed = true;
@@ -304,8 +414,16 @@ static int vc4_vec_connector_init(struct drm_device *dev, struct vc4_vec *vec)
 	drm_connector_helper_add(connector, &vc4_vec_connector_helper_funcs);
 
 	drm_object_attach_property(&connector->base,
-				   dev->mode_config.tv_mode_property,
-				   VC4_VEC_TV_MODE_NTSC);
+				   dev->mode_config.tv_norm_property,
+				   DRM_MODE_TV_NORM_NTSC_M);
+
+	prop = drm_property_create_enum(dev, 0, "mode",
+					tv_mode_names, ARRAY_SIZE(tv_mode_names));
+	if (!prop)
+		return -ENOMEM;
+	vec->tv_mode_property = prop;
+
+	drm_object_attach_property(&connector->base, prop, VC4_VEC_TV_MODE_NTSC);
 
 	drm_connector_attach_encoder(connector, &vec->encoder.base);
 
@@ -352,13 +470,16 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder,
 	struct drm_connector *connector = &vec->connector;
 	struct drm_connector_state *conn_state =
 		drm_atomic_get_new_connector_state(state, connector);
-	const struct vc4_vec_tv_mode *tv_mode =
-		&vc4_vec_tv_modes[conn_state->tv.mode];
+	const struct vc4_vec_tv_mode *tv_mode;
 	int idx, ret;
 
 	if (!drm_dev_enter(drm, &idx))
 		return;
 
+	tv_mode = vc4_vec_tv_mode_lookup(conn_state->tv.norm);
+	if (!tv_mode)
+		goto err_dev_exit;
+
 	ret = pm_runtime_get_sync(&vec->pdev->dev);
 	if (ret < 0) {
 		DRM_ERROR("Failed to retain power domain: %d\n", ret);
@@ -435,23 +556,7 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder,
 	drm_dev_exit(idx);
 }
 
-static int vc4_vec_encoder_atomic_check(struct drm_encoder *encoder,
-					struct drm_crtc_state *crtc_state,
-					struct drm_connector_state *conn_state)
-{
-	const struct vc4_vec_tv_mode *vec_mode;
-
-	vec_mode = &vc4_vec_tv_modes[conn_state->tv.mode];
-
-	if (conn_state->crtc &&
-	    !drm_mode_equal(vec_mode->mode, &crtc_state->adjusted_mode))
-		return -EINVAL;
-
-	return 0;
-}
-
 static const struct drm_encoder_helper_funcs vc4_vec_encoder_helper_funcs = {
-	.atomic_check = vc4_vec_encoder_atomic_check,
 	.atomic_disable = vc4_vec_encoder_disable,
 	.atomic_enable = vc4_vec_encoder_enable,
 };
@@ -492,13 +597,6 @@ static const struct of_device_id vc4_vec_dt_match[] = {
 	{ /* sentinel */ },
 };
 
-static const char * const tv_mode_names[] = {
-	[VC4_VEC_TV_MODE_NTSC] = "NTSC",
-	[VC4_VEC_TV_MODE_NTSC_J] = "NTSC-J",
-	[VC4_VEC_TV_MODE_PAL] = "PAL",
-	[VC4_VEC_TV_MODE_PAL_M] = "PAL-M",
-};
-
 static int vc4_vec_bind(struct device *dev, struct device *master, void *data)
 {
 	struct platform_device *pdev = to_platform_device(dev);
@@ -507,9 +605,11 @@ static int vc4_vec_bind(struct device *dev, struct device *master, void *data)
 	int ret;
 
 	ret = drm_mode_create_tv_properties(drm,
-					    0,
-					    ARRAY_SIZE(tv_mode_names),
-					    tv_mode_names);
+					    DRM_MODE_TV_NORM_NTSC_J |
+					    DRM_MODE_TV_NORM_NTSC_M |
+					    DRM_MODE_TV_NORM_PAL_B |
+					    DRM_MODE_TV_NORM_PAL_M,
+					    0, NULL);
 	if (ret)
 		return ret;
 

-- 
b4 0.10.0-dev-49460