Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 293 insertions, 0 deletions

diff --git a/drivers/gpu/drm/meson/meson_venc_cvbs.c b/drivers/gpu/drm/meson/meson_venc_cvbs.c
new file mode 100644
index 000000000..f1747fde1
--- /dev/null
+++ b/drivers/gpu/drm/meson/meson_venc_cvbs.c
@@ -0,0 +1,293 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2016 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
+ * Copyright (C) 2014 Endless Mobile
+ *
+ * Written by:
+ *     Jasper St. Pierre <jstpierre@mecheye.net>
+ */
+
+#include <linux/export.h>
+#include <linux/of_graph.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_device.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_print.h>
+
+#include "meson_registers.h"
+#include "meson_vclk.h"
+#include "meson_venc_cvbs.h"
+
+/* HHI VDAC Registers */
+#define HHI_VDAC_CNTL0		0x2F4 /* 0xbd offset in data sheet */
+#define HHI_VDAC_CNTL0_G12A	0x2EC /* 0xbd offset in data sheet */
+#define HHI_VDAC_CNTL1		0x2F8 /* 0xbe offset in data sheet */
+#define HHI_VDAC_CNTL1_G12A	0x2F0 /* 0xbe offset in data sheet */
+
+struct meson_venc_cvbs {
+	struct drm_encoder	encoder;
+	struct drm_connector	connector;
+	struct meson_drm	*priv;
+};
+#define encoder_to_meson_venc_cvbs(x) \
+	container_of(x, struct meson_venc_cvbs, encoder)
+
+#define connector_to_meson_venc_cvbs(x) \
+	container_of(x, struct meson_venc_cvbs, connector)
+
+/* Supported Modes */
+
+struct meson_cvbs_mode meson_cvbs_modes[MESON_CVBS_MODES_COUNT] = {
+	{ /* PAL */
+		.enci = &meson_cvbs_enci_pal,
+		.mode = {
+			DRM_MODE("720x576i", DRM_MODE_TYPE_DRIVER, 13500,
+				 720, 732, 795, 864, 0, 576, 580, 586, 625, 0,
+				 DRM_MODE_FLAG_INTERLACE),
+			.picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3,
+		},
+	},
+	{ /* NTSC */
+		.enci = &meson_cvbs_enci_ntsc,
+		.mode = {
+			DRM_MODE("720x480i", DRM_MODE_TYPE_DRIVER, 13500,
+				720, 739, 801, 858, 0, 480, 488, 494, 525, 0,
+				DRM_MODE_FLAG_INTERLACE),
+			.picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3,
+		},
+	},
+};
+
+static const struct meson_cvbs_mode *
+meson_cvbs_get_mode(const struct drm_display_mode *req_mode)
+{
+	int i;
+
+	for (i = 0; i < MESON_CVBS_MODES_COUNT; ++i) {
+		struct meson_cvbs_mode *meson_mode = &meson_cvbs_modes[i];
+
+		if (drm_mode_match(req_mode, &meson_mode->mode,
+				   DRM_MODE_MATCH_TIMINGS |
+				   DRM_MODE_MATCH_CLOCK |
+				   DRM_MODE_MATCH_FLAGS |
+				   DRM_MODE_MATCH_3D_FLAGS))
+			return meson_mode;
+	}
+
+	return NULL;
+}
+
+/* Connector */
+
+static void meson_cvbs_connector_destroy(struct drm_connector *connector)
+{
+	drm_connector_cleanup(connector);
+}
+
+static enum drm_connector_status
+meson_cvbs_connector_detect(struct drm_connector *connector, bool force)
+{
+	/* FIXME: Add load-detect or jack-detect if possible */
+	return connector_status_connected;
+}
+
+static int meson_cvbs_connector_get_modes(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_display_mode *mode;
+	int i;
+
+	for (i = 0; i < MESON_CVBS_MODES_COUNT; ++i) {
+		struct meson_cvbs_mode *meson_mode = &meson_cvbs_modes[i];
+
+		mode = drm_mode_duplicate(dev, &meson_mode->mode);
+		if (!mode) {
+			DRM_ERROR("Failed to create a new display mode\n");
+			return 0;
+		}
+
+		drm_mode_probed_add(connector, mode);
+	}
+
+	return i;
+}
+
+static int meson_cvbs_connector_mode_valid(struct drm_connector *connector,
+					   struct drm_display_mode *mode)
+{
+	/* Validate the modes added in get_modes */
+	return MODE_OK;
+}
+
+static const struct drm_connector_funcs meson_cvbs_connector_funcs = {
+	.detect			= meson_cvbs_connector_detect,
+	.fill_modes		= drm_helper_probe_single_connector_modes,
+	.destroy		= meson_cvbs_connector_destroy,
+	.reset			= drm_atomic_helper_connector_reset,
+	.atomic_duplicate_state	= drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state	= drm_atomic_helper_connector_destroy_state,
+};
+
+static const
+struct drm_connector_helper_funcs meson_cvbs_connector_helper_funcs = {
+	.get_modes	= meson_cvbs_connector_get_modes,
+	.mode_valid	= meson_cvbs_connector_mode_valid,
+};
+
+/* Encoder */
+
+static void meson_venc_cvbs_encoder_destroy(struct drm_encoder *encoder)
+{
+	drm_encoder_cleanup(encoder);
+}
+
+static const struct drm_encoder_funcs meson_venc_cvbs_encoder_funcs = {
+	.destroy        = meson_venc_cvbs_encoder_destroy,
+};
+
+static int meson_venc_cvbs_encoder_atomic_check(struct drm_encoder *encoder,
+					struct drm_crtc_state *crtc_state,
+					struct drm_connector_state *conn_state)
+{
+	if (meson_cvbs_get_mode(&crtc_state->mode))
+		return 0;
+
+	return -EINVAL;
+}
+
+static void meson_venc_cvbs_encoder_disable(struct drm_encoder *encoder)
+{
+	struct meson_venc_cvbs *meson_venc_cvbs =
+					encoder_to_meson_venc_cvbs(encoder);
+	struct meson_drm *priv = meson_venc_cvbs->priv;
+
+	/* Disable CVBS VDAC */
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
+		regmap_write(priv->hhi, HHI_VDAC_CNTL0_G12A, 0);
+		regmap_write(priv->hhi, HHI_VDAC_CNTL1_G12A, 0);
+	} else {
+		regmap_write(priv->hhi, HHI_VDAC_CNTL0, 0);
+		regmap_write(priv->hhi, HHI_VDAC_CNTL1, 8);
+	}
+}
+
+static void meson_venc_cvbs_encoder_enable(struct drm_encoder *encoder)
+{
+	struct meson_venc_cvbs *meson_venc_cvbs =
+					encoder_to_meson_venc_cvbs(encoder);
+	struct meson_drm *priv = meson_venc_cvbs->priv;
+
+	/* VDAC0 source is not from ATV */
+	writel_bits_relaxed(VENC_VDAC_SEL_ATV_DMD, 0,
+			    priv->io_base + _REG(VENC_VDAC_DACSEL0));
+
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
+		regmap_write(priv->hhi, HHI_VDAC_CNTL0, 1);
+		regmap_write(priv->hhi, HHI_VDAC_CNTL1, 0);
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
+		regmap_write(priv->hhi, HHI_VDAC_CNTL0, 0xf0001);
+		regmap_write(priv->hhi, HHI_VDAC_CNTL1, 0);
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
+		regmap_write(priv->hhi, HHI_VDAC_CNTL0_G12A, 0x906001);
+		regmap_write(priv->hhi, HHI_VDAC_CNTL1_G12A, 0);
+	}
+}
+
+static void meson_venc_cvbs_encoder_mode_set(struct drm_encoder *encoder,
+				   struct drm_display_mode *mode,
+				   struct drm_display_mode *adjusted_mode)
+{
+	const struct meson_cvbs_mode *meson_mode = meson_cvbs_get_mode(mode);
+	struct meson_venc_cvbs *meson_venc_cvbs =
+					encoder_to_meson_venc_cvbs(encoder);
+	struct meson_drm *priv = meson_venc_cvbs->priv;
+
+	if (meson_mode) {
+		meson_venci_cvbs_mode_set(priv, meson_mode->enci);
+
+		/* Setup 27MHz vclk2 for ENCI and VDAC */
+		meson_vclk_setup(priv, MESON_VCLK_TARGET_CVBS,
+				 MESON_VCLK_CVBS, MESON_VCLK_CVBS,
+				 MESON_VCLK_CVBS, MESON_VCLK_CVBS,
+				 true);
+	}
+}
+
+static const struct drm_encoder_helper_funcs
+				meson_venc_cvbs_encoder_helper_funcs = {
+	.atomic_check	= meson_venc_cvbs_encoder_atomic_check,
+	.disable	= meson_venc_cvbs_encoder_disable,
+	.enable		= meson_venc_cvbs_encoder_enable,
+	.mode_set	= meson_venc_cvbs_encoder_mode_set,
+};
+
+static bool meson_venc_cvbs_connector_is_available(struct meson_drm *priv)
+{
+	struct device_node *remote;
+
+	remote = of_graph_get_remote_node(priv->dev->of_node, 0, 0);
+	if (!remote)
+		return false;
+
+	of_node_put(remote);
+	return true;
+}
+
+int meson_venc_cvbs_create(struct meson_drm *priv)
+{
+	struct drm_device *drm = priv->drm;
+	struct meson_venc_cvbs *meson_venc_cvbs;
+	struct drm_connector *connector;
+	struct drm_encoder *encoder;
+	int ret;
+
+	if (!meson_venc_cvbs_connector_is_available(priv)) {
+		dev_info(drm->dev, "CVBS Output connector not available\n");
+		return 0;
+	}
+
+	meson_venc_cvbs = devm_kzalloc(priv->dev, sizeof(*meson_venc_cvbs),
+				       GFP_KERNEL);
+	if (!meson_venc_cvbs)
+		return -ENOMEM;
+
+	meson_venc_cvbs->priv = priv;
+	encoder = &meson_venc_cvbs->encoder;
+	connector = &meson_venc_cvbs->connector;
+
+	/* Connector */
+
+	drm_connector_helper_add(connector,
+				 &meson_cvbs_connector_helper_funcs);
+
+	ret = drm_connector_init(drm, connector, &meson_cvbs_connector_funcs,
+				 DRM_MODE_CONNECTOR_Composite);
+	if (ret) {
+		dev_err(priv->dev, "Failed to init CVBS connector\n");
+		return ret;
+	}
+
+	connector->interlace_allowed = 1;
+
+	/* Encoder */
+
+	drm_encoder_helper_add(encoder, &meson_venc_cvbs_encoder_helper_funcs);
+
+	ret = drm_encoder_init(drm, encoder, &meson_venc_cvbs_encoder_funcs,
+			       DRM_MODE_ENCODER_TVDAC, "meson_venc_cvbs");
+	if (ret) {
+		dev_err(priv->dev, "Failed to init CVBS encoder\n");
+		return ret;
+	}
+
+	encoder->possible_crtcs = BIT(0);
+
+	drm_connector_attach_encoder(connector, encoder);
+
+	return 0;
+}