Message-Id: <20161129184202.10640-4-eric@anholt.net>
Date:   Tue, 29 Nov 2016 10:41:59 -0800
From:   Eric Anholt <eric@...olt.net>
To:     dri-devel@...ts.freedesktop.org
Cc:     linux-kernel@...r.kernel.org,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Eric Anholt <eric@...olt.net>
Subject: [PATCH 3/6] drm/vc4: Add support for the VEC (Video Encoder) IP

From: Boris Brezillon <boris.brezillon@...e-electrons.com>

The VEC IP is a TV DAC, providing support for PAL and NTSC standards.

Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
Signed-off-by: Eric Anholt <eric@...olt.net>
---
 drivers/gpu/drm/vc4/Makefile      |   1 +
 drivers/gpu/drm/vc4/vc4_debugfs.c |   1 +
 drivers/gpu/drm/vc4/vc4_drv.c     |   1 +
 drivers/gpu/drm/vc4/vc4_drv.h     |   5 +
 drivers/gpu/drm/vc4/vc4_vec.c     | 657 ++++++++++++++++++++++++++++++++++++++
 5 files changed, 665 insertions(+)
 create mode 100644 drivers/gpu/drm/vc4/vc4_vec.c

diff --git a/drivers/gpu/drm/vc4/Makefile b/drivers/gpu/drm/vc4/Makefile
index fb77db755e0a..7757f69a8a77 100644
--- a/drivers/gpu/drm/vc4/Makefile
+++ b/drivers/gpu/drm/vc4/Makefile
@@ -11,6 +11,7 @@ vc4-y := \
 	vc4_kms.o \
 	vc4_gem.o \
 	vc4_hdmi.o \
+	vc4_vec.o \
 	vc4_hvs.o \
 	vc4_irq.o \
 	vc4_plane.o \
diff --git a/drivers/gpu/drm/vc4/vc4_debugfs.c b/drivers/gpu/drm/vc4/vc4_debugfs.c
index 245115d49c46..caf817bac885 100644
--- a/drivers/gpu/drm/vc4/vc4_debugfs.c
+++ b/drivers/gpu/drm/vc4/vc4_debugfs.c
@@ -19,6 +19,7 @@ static const struct drm_info_list vc4_debugfs_list[] = {
 	{"bo_stats", vc4_bo_stats_debugfs, 0},
 	{"dpi_regs", vc4_dpi_debugfs_regs, 0},
 	{"hdmi_regs", vc4_hdmi_debugfs_regs, 0},
+	{"vec_regs", vc4_vec_debugfs_regs, 0},
 	{"hvs_regs", vc4_hvs_debugfs_regs, 0},
 	{"crtc0_regs", vc4_crtc_debugfs_regs, 0, (void *)(uintptr_t)0},
 	{"crtc1_regs", vc4_crtc_debugfs_regs, 0, (void *)(uintptr_t)1},
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 86aabf6d0f79..df3da26a849e 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -294,6 +294,7 @@ static const struct component_master_ops vc4_drm_ops = {
 
 static struct platform_driver *const component_drivers[] = {
 	&vc4_hdmi_driver,
+	&vc4_vec_driver,
 	&vc4_dpi_driver,
 	&vc4_hvs_driver,
 	&vc4_crtc_driver,
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
index b6049cc25675..162821796bf3 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -17,6 +17,7 @@ struct vc4_dev {
 	struct vc4_crtc *crtc[3];
 	struct vc4_v3d *v3d;
 	struct vc4_dpi *dpi;
+	struct vc4_vec *vec;
 
 	struct drm_fbdev_cma *fbdev;
 
@@ -486,6 +487,10 @@ int vc4_queue_seqno_cb(struct drm_device *dev,
 extern struct platform_driver vc4_hdmi_driver;
 int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused);
 
+/* vc4_hdmi.c */
+extern struct platform_driver vc4_vec_driver;
+int vc4_vec_debugfs_regs(struct seq_file *m, void *unused);
+
 /* vc4_irq.c */
 irqreturn_t vc4_irq(int irq, void *arg);
 void vc4_irq_preinstall(struct drm_device *dev);
diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c
new file mode 100644
index 000000000000..32bb8ef985fb
--- /dev/null
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
@@ -0,0 +1,657 @@
+/*
+ * Copyright (C) 2016 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * DOC: VC4 SDTV module
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_panel.h>
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/of_graph.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+
+#include "vc4_drv.h"
+#include "vc4_regs.h"
+
+/* WSE Registers */
+#define VEC_WSE_RESET			0xc0
+
+#define VEC_WSE_CONTROL			0xc4
+#define VEC_WSE_WSS_ENABLE		BIT(7)
+
+#define VEC_WSE_WSS_DATA		0xc8
+#define VEC_WSE_VPS_DATA1		0xcc
+#define VEC_WSE_VPS_CONTROL		0xd0
+
+/* VEC Registers */
+#define VEC_REVID			0x100
+
+#define VEC_CONFIG0			0x104
+#define VEC_CONFIG0_YDEL_MASK		GENMASK(28, 26)
+#define VEC_CONFIG0_YDEL(x)		((x) << 26)
+#define VEC_CONFIG0_CDEL_MASK		GENMASK(25, 24)
+#define VEC_CONFIG0_CDEL(x)		((x) << 24)
+#define VEC_CONFIG0_PBPR_FIL		BIT(18)
+#define VEC_CONFIG0_CHROMA_GAIN_MASK	GENMASK(17, 16)
+#define VEC_CONFIG0_CHROMA_GAIN_UNITY	(0 << 16)
+#define VEC_CONFIG0_CHROMA_GAIN_1_32	(1 << 16)
+#define VEC_CONFIG0_CHROMA_GAIN_1_16	(2 << 16)
+#define VEC_CONFIG0_CHROMA_GAIN_1_8	(3 << 16)
+#define VEC_CONFIG0_CBURST_GAIN_MASK	GENMASK(14, 13)
+#define VEC_CONFIG0_CBURST_GAIN_UNITY	(0 << 13)
+#define VEC_CONFIG0_CBURST_GAIN_1_128	(1 << 13)
+#define VEC_CONFIG0_CBURST_GAIN_1_64	(2 << 13)
+#define VEC_CONFIG0_CBURST_GAIN_1_32	(3 << 13)
+#define VEC_CONFIG0_CHRBW1		BIT(11)
+#define VEC_CONFIG0_CHRBW0		BIT(10)
+#define VEC_CONFIG0_SYNCDIS		BIT(9)
+#define VEC_CONFIG0_BURDIS		BIT(8)
+#define VEC_CONFIG0_CHRDIS		BIT(7)
+#define VEC_CONFIG0_PDEN		BIT(6)
+#define VEC_CONFIG0_YCDELAY		BIT(4)
+#define VEC_CONFIG0_RAMPEN		BIT(2)
+#define VEC_CONFIG0_YCDIS		BIT(2)
+#define VEC_CONFIG0_STD_MASK		GENMASK(1, 0)
+#define VEC_CONFIG0_NTSC_STD		0
+#define VEC_CONFIG0_PAL_BDGHI_STD	1
+#define VEC_CONFIG0_PAL_N_STD		3
+
+#define VEC_SCHPH			0x108
+#define VEC_SOFT_RESET			0x10c
+#define VEC_CLMP0_START			0x144
+#define VEC_CLMP0_END			0x148
+#define VEC_FREQ3_2			0x180
+#define VEC_FREQ1_0			0x184
+
+#define VEC_CONFIG1			0x188
+#define VEC_CONFIG_VEC_RESYNC_OFF	BIT(18)
+#define VEC_CONFIG_RGB219		BIT(17)
+#define VEC_CONFIG_CBAR_EN		BIT(16)
+#define VEC_CONFIG_TC_OBB		BIT(15)
+#define VEC_CONFIG1_OUTPUT_MODE_MASK	GENMASK(12, 10)
+#define VEC_CONFIG1_C_Y_CVBS		(0 << 10)
+#define VEC_CONFIG1_CVBS_Y_C		(1 << 10)
+#define VEC_CONFIG1_PR_Y_PB		(2 << 10)
+#define VEC_CONFIG1_RGB			(4 << 10)
+#define VEC_CONFIG1_Y_C_CVBS		(5 << 10)
+#define VEC_CONFIG1_C_CVBS_Y		(6 << 10)
+#define VEC_CONFIG1_C_CVBS_CVBS		(7 << 10)
+#define VEC_CONFIG1_DIS_CHR		BIT(9)
+#define VEC_CONFIG1_DIS_LUMA		BIT(8)
+#define VEC_CONFIG1_YCBCR_IN		BIT(6)
+#define VEC_CONFIG1_DITHER_TYPE_LFSR	0
+#define VEC_CONFIG1_DITHER_TYPE_COUNTER	BIT(5)
+#define VEC_CONFIG1_DITHER_EN		BIT(4)
+#define VEC_CONFIG1_CYDELAY		BIT(3)
+#define VEC_CONFIG1_LUMADIS		BIT(2)
+#define VEC_CONFIG1_COMPDIS		BIT(1)
+#define VEC_CONFIG1_CUSTOM_FREQ		BIT(0)
+
+#define VEC_CONFIG2			0x18c
+#define VEC_CONFIG2_PROG_SCAN		BIT(15)
+#define VEC_CONFIG2_SYNC_ADJ_MASK	GENMASK(14, 12)
+#define VEC_CONFIG2_SYNC_ADJ(x)		(((x) / 2) << 12)
+#define VEC_CONFIG2_PBPR_EN		BIT(10)
+#define VEC_CONFIG2_UV_DIG_DIS		BIT(6)
+#define VEC_CONFIG2_RGB_DIG_DIS		BIT(5)
+#define VEC_CONFIG2_TMUX_MASK		GENMASK(3, 2)
+#define VEC_CONFIG2_TMUX_DRIVE0		(0 << 2)
+#define VEC_CONFIG2_TMUX_RG_COMP	(1 << 2)
+#define VEC_CONFIG2_TMUX_UV_YC		(2 << 2)
+#define VEC_CONFIG2_TMUX_SYNC_YC	(3 << 2)
+
+#define VEC_INTERRUPT_CONTROL		0x190
+#define VEC_INTERRUPT_STATUS		0x194
+#define VEC_FCW_SECAM_B			0x198
+#define VEC_SECAM_GAIN_VAL		0x19c
+
+#define VEC_CONFIG3			0x1a0
+#define VEC_CONFIG3_HORIZ_LEN_STD	(0 << 0)
+#define VEC_CONFIG3_HORIZ_LEN_MPEG1_SIF	(1 << 0)
+#define VEC_CONFIG3_SHAPE_NON_LINEAR	BIT(1)
+
+#define VEC_STATUS0			0x200
+#define VEC_MASK0			0x204
+
+#define VEC_CFG				0x208
+#define VEC_CFG_SG_MODE_MASK		GENMASK(6, 5)
+#define VEC_CFG_SG_MODE(x)		((x) << 5)
+#define VEC_CFG_SG_EN			BIT(4)
+#define VEC_CFG_VEC_EN			BIT(3)
+#define VEC_CFG_MB_EN			BIT(2)
+#define VEC_CFG_ENABLE			BIT(1)
+#define VEC_CFG_TB_EN			BIT(0)
+
+#define VEC_DAC_TEST			0x20c
+
+#define VEC_DAC_CONFIG			0x210
+#define VEC_DAC_CONFIG_LDO_BIAS_CTRL(x)	((x) << 24)
+#define VEC_DAC_CONFIG_DRIVER_CTRL(x)	((x) << 16)
+#define VEC_DAC_CONFIG_DAC_CTRL(x)	(x)
+
+#define VEC_DAC_MISC			0x214
+#define VEC_DAC_MISC_VCD_CTRL_MASK	GENMASK(31, 16)
+#define VEC_DAC_MISC_VCD_CTRL(x)	((x) << 16)
+#define VEC_DAC_MISC_VID_ACT		BIT(8)
+#define VEC_DAC_MISC_VCD_PWRDN		BIT(6)
+#define VEC_DAC_MISC_BIAS_PWRDN		BIT(5)
+#define VEC_DAC_MISC_DAC_PWRDN		BIT(2)
+#define VEC_DAC_MISC_LDO_PWRDN		BIT(1)
+#define VEC_DAC_MISC_DAC_RST_N		BIT(0)
+
+
+/* General VEC hardware state. */
+struct vc4_vec {
+	struct platform_device *pdev;
+
+	struct drm_encoder *encoder;
+	struct drm_connector *connector;
+
+	void __iomem *regs;
+
+	struct clk *clock;
+
+	const struct vc4_vec_tv_mode *tv_mode;
+};
+
+#define VEC_READ(offset) readl(vec->regs + (offset))
+#define VEC_WRITE(offset, val) writel(val, vec->regs + (offset))
+
+/* VC4 VEC encoder KMS struct */
+struct vc4_vec_encoder {
+	struct vc4_encoder base;
+	struct vc4_vec *vec;
+};
+
+static inline struct vc4_vec_encoder *
+to_vc4_vec_encoder(struct drm_encoder *encoder)
+{
+	return container_of(encoder, struct vc4_vec_encoder, base.base);
+}
+
+/* VC4 VEC connector KMS struct */
+struct vc4_vec_connector {
+	struct drm_connector base;
+	struct vc4_vec *vec;
+
+	/* Since the connector is attached to just the one encoder,
+	 * this is the reference to it so we can do the best_encoder()
+	 * hook.
+	 */
+	struct drm_encoder *encoder;
+};
+
+static inline struct vc4_vec_connector *
+to_vc4_vec_connector(struct drm_connector *connector)
+{
+	return container_of(connector, struct vc4_vec_connector, base);
+}
+
+enum vc4_vec_tv_mode_id {
+	VC4_VEC_TV_MODE_NTSC,
+	VC4_VEC_TV_MODE_NTSC_J,
+	VC4_VEC_TV_MODE_PAL,
+	VC4_VEC_TV_MODE_PAL_M,
+};
+
+struct vc4_vec_tv_mode {
+	const struct drm_display_mode *mode;
+	void (*mode_set)(struct vc4_vec *vec);
+};
+
+#define VEC_REG(reg) { reg, #reg }
+static const struct {
+	u32 reg;
+	const char *name;
+} vec_regs[] = {
+	VEC_REG(VEC_WSE_CONTROL),
+	VEC_REG(VEC_WSE_WSS_DATA),
+	VEC_REG(VEC_WSE_VPS_DATA1),
+	VEC_REG(VEC_WSE_VPS_CONTROL),
+	VEC_REG(VEC_REVID),
+	VEC_REG(VEC_CONFIG0),
+	VEC_REG(VEC_SCHPH),
+	VEC_REG(VEC_CLMP0_START),
+	VEC_REG(VEC_CLMP0_END),
+	VEC_REG(VEC_FREQ3_2),
+	VEC_REG(VEC_FREQ1_0),
+	VEC_REG(VEC_CONFIG1),
+	VEC_REG(VEC_CONFIG2),
+	VEC_REG(VEC_INTERRUPT_CONTROL),
+	VEC_REG(VEC_INTERRUPT_STATUS),
+	VEC_REG(VEC_FCW_SECAM_B),
+	VEC_REG(VEC_SECAM_GAIN_VAL),
+	VEC_REG(VEC_CONFIG3),
+	VEC_REG(VEC_STATUS0),
+	VEC_REG(VEC_MASK0),
+	VEC_REG(VEC_CFG),
+	VEC_REG(VEC_DAC_TEST),
+	VEC_REG(VEC_DAC_CONFIG),
+	VEC_REG(VEC_DAC_MISC),
+};
+
+#ifdef CONFIG_DEBUG_FS
+int vc4_vec_debugfs_regs(struct seq_file *m, void *unused)
+{
+	struct drm_info_node *node = (struct drm_info_node *)m->private;
+	struct drm_device *dev = node->minor->dev;
+	struct vc4_dev *vc4 = to_vc4_dev(dev);
+	struct vc4_vec *vec = vc4->vec;
+	int i;
+
+	if (!vec)
+		return 0;
+
+	for (i = 0; i < ARRAY_SIZE(vec_regs); i++) {
+		seq_printf(m, "%s (0x%04x): 0x%08x\n",
+			   vec_regs[i].name, vec_regs[i].reg,
+			   VEC_READ(vec_regs[i].reg));
+	}
+
+	return 0;
+}
+#endif
+
+static void vc4_vec_ntsc_mode_set(struct vc4_vec *vec)
+{
+	VEC_WRITE(VEC_CONFIG0, VEC_CONFIG0_NTSC_STD | VEC_CONFIG0_PDEN);
+	VEC_WRITE(VEC_CONFIG1, VEC_CONFIG1_C_CVBS_CVBS);
+}
+
+static void vc4_vec_ntsc_j_mode_set(struct vc4_vec *vec)
+{
+	VEC_WRITE(VEC_CONFIG0, VEC_CONFIG0_NTSC_STD);
+	VEC_WRITE(VEC_CONFIG1, VEC_CONFIG1_C_CVBS_CVBS);
+}
+
+static const struct drm_display_mode ntsc_mode = {
+	DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 13500,
+		 720, 720 + 14, 720 + 14 + 64, 720 + 14 + 64 + 60, 0,
+		 480, 480 + 3, 480 + 3 + 3, 480 + 3 + 3 + 16, 0,
+		 DRM_MODE_FLAG_INTERLACE)
+};
+
+static void vc4_vec_pal_mode_set(struct vc4_vec *vec)
+{
+	VEC_WRITE(VEC_CONFIG0, VEC_CONFIG0_PAL_BDGHI_STD);
+	VEC_WRITE(VEC_CONFIG1, VEC_CONFIG1_C_CVBS_CVBS);
+}
+
+static void vc4_vec_pal_m_mode_set(struct vc4_vec *vec)
+{
+	VEC_WRITE(VEC_CONFIG0, VEC_CONFIG0_PAL_BDGHI_STD);
+	VEC_WRITE(VEC_CONFIG1,
+		  VEC_CONFIG1_C_CVBS_CVBS | VEC_CONFIG1_CUSTOM_FREQ);
+	VEC_WRITE(VEC_FREQ3_2, 0x223b);
+	VEC_WRITE(VEC_FREQ1_0, 0x61d1);
+}
+
+static const struct drm_display_mode pal_mode = {
+	DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 13500,
+		 720, 720 + 20, 720 + 20 + 64, 720 + 20 + 64 + 60, 0,
+		 576, 576 + 2, 576 + 2 + 3, 576 + 2 + 3 + 20, 0,
+		 DRM_MODE_FLAG_INTERLACE)
+};
+
+static const struct vc4_vec_tv_mode vc4_vec_tv_modes[] = {
+	[VC4_VEC_TV_MODE_NTSC] = {
+		.mode = &ntsc_mode,
+		.mode_set = vc4_vec_ntsc_mode_set,
+	},
+	[VC4_VEC_TV_MODE_NTSC_J] = {
+		.mode = &ntsc_mode,
+		.mode_set = vc4_vec_ntsc_j_mode_set,
+	},
+	[VC4_VEC_TV_MODE_PAL] = {
+		.mode = &pal_mode,
+		.mode_set = vc4_vec_pal_mode_set,
+	},
+	[VC4_VEC_TV_MODE_PAL_M] = {
+		.mode = &pal_mode,
+		.mode_set = vc4_vec_pal_m_mode_set,
+	},
+};
+
+static enum drm_connector_status
+vc4_vec_connector_detect(struct drm_connector *connector, bool force)
+{
+	return connector_status_unknown;
+}
+
+static void vc4_vec_connector_destroy(struct drm_connector *connector)
+{
+	drm_connector_unregister(connector);
+	drm_connector_cleanup(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);
+	if (!mode) {
+		DRM_ERROR("Failed to create a new display mode\n");
+		return -ENOMEM;
+	}
+
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_connector_funcs vc4_vec_connector_funcs = {
+	.dpms = drm_atomic_helper_connector_dpms,
+	.detect = vc4_vec_connector_detect,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.set_property = drm_atomic_helper_connector_set_property,
+	.destroy = vc4_vec_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 vc4_vec_connector_helper_funcs = {
+	.get_modes = vc4_vec_connector_get_modes,
+};
+
+static struct drm_connector *vc4_vec_connector_init(struct drm_device *dev,
+						    struct vc4_vec *vec)
+{
+	struct drm_connector *connector = NULL;
+	struct vc4_vec_connector *vec_connector;
+
+	vec_connector = devm_kzalloc(dev->dev, sizeof(*vec_connector),
+				     GFP_KERNEL);
+	if (!vec_connector)
+		return ERR_PTR(-ENOMEM);
+
+	connector = &vec_connector->base;
+	connector->interlace_allowed = true;
+
+	vec_connector->encoder = vec->encoder;
+	vec_connector->vec = vec;
+
+	drm_connector_init(dev, connector, &vc4_vec_connector_funcs,
+			   DRM_MODE_CONNECTOR_Composite);
+	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);
+	vec->tv_mode = &vc4_vec_tv_modes[VC4_VEC_TV_MODE_NTSC];
+
+	drm_mode_connector_attach_encoder(connector, vec->encoder);
+
+	return connector;
+}
+
+static const struct drm_encoder_funcs vc4_vec_encoder_funcs = {
+	.destroy = drm_encoder_cleanup,
+};
+
+static void vc4_vec_encoder_disable(struct drm_encoder *encoder)
+{
+	struct vc4_vec_encoder *vc4_vec_encoder = to_vc4_vec_encoder(encoder);
+	struct vc4_vec *vec = vc4_vec_encoder->vec;
+	int ret;
+
+	VEC_WRITE(VEC_CFG, 0);
+	VEC_WRITE(VEC_DAC_MISC,
+		  VEC_DAC_MISC_VCD_PWRDN |
+		  VEC_DAC_MISC_BIAS_PWRDN |
+		  VEC_DAC_MISC_DAC_PWRDN |
+		  VEC_DAC_MISC_LDO_PWRDN);
+
+	clk_disable_unprepare(vec->clock);
+
+	ret = pm_runtime_put(&vec->pdev->dev);
+	if (ret < 0) {
+		DRM_ERROR("Failed to release power domain: %d\n", ret);
+		return;
+	}
+}
+
+static void vc4_vec_encoder_enable(struct drm_encoder *encoder)
+{
+	struct vc4_vec_encoder *vc4_vec_encoder = to_vc4_vec_encoder(encoder);
+	struct vc4_vec *vec = vc4_vec_encoder->vec;
+	int ret;
+
+	ret = pm_runtime_get_sync(&vec->pdev->dev);
+	if (ret < 0) {
+		DRM_ERROR("Failed to retain power domain: %d\n", ret);
+		return;
+	}
+
+	/*
+	 * We need to set the clock rate each time we enable the encoder
+	 * because there's a chance we share the same parent with the HDMI
+	 * clock, and both drivers are requesting different rates.
+	 * The good news is, these 2 encoders cannot be enabled at the same
+	 * time, thus preventing incompatible rate requests.
+	 */
+	ret = clk_set_rate(vec->clock, 108000000);
+	if (ret) {
+		DRM_ERROR("Failed to set clock rate: %d\n", ret);
+		return;
+	}
+
+	ret = clk_prepare_enable(vec->clock);
+	if (ret) {
+		DRM_ERROR("Failed to turn on core clock: %d\n", ret);
+		return;
+	}
+
+	/* Reset the different blocks */
+	VEC_WRITE(VEC_WSE_RESET, 1);
+	VEC_WRITE(VEC_SOFT_RESET, 1);
+
+	/* Disable the CGSM-A and WSE blocks */
+	VEC_WRITE(VEC_WSE_CONTROL, 0);
+
+	/* Write config common to all modes. */
+
+	/*
+	 * Color subcarrier phase: phase = 360 * SCHPH / 256.
+	 * 0x28 <=> 39.375 deg.
+	 */
+	VEC_WRITE(VEC_SCHPH, 0x28);
+
+	/*
+	 * Reset to default values.
+	 */
+	VEC_WRITE(VEC_CLMP0_START, 0xac);
+	VEC_WRITE(VEC_CLMP0_END, 0xec);
+	VEC_WRITE(VEC_CONFIG2,
+		  VEC_CONFIG2_UV_DIG_DIS | VEC_CONFIG2_RGB_DIG_DIS);
+	VEC_WRITE(VEC_CONFIG3, VEC_CONFIG3_HORIZ_LEN_STD);
+	VEC_WRITE(VEC_DAC_CONFIG,
+		  VEC_DAC_CONFIG_DAC_CTRL(0xc) |
+		  VEC_DAC_CONFIG_DRIVER_CTRL(0xc) |
+		  VEC_DAC_CONFIG_LDO_BIAS_CTRL(0x46));
+
+	/* Mask all interrupts. */
+	VEC_WRITE(VEC_MASK0, 0);
+
+	vec->tv_mode->mode_set(vec);
+
+	VEC_WRITE(VEC_DAC_MISC,
+		  VEC_DAC_MISC_VID_ACT | VEC_DAC_MISC_DAC_RST_N);
+	VEC_WRITE(VEC_CFG, VEC_CFG_VEC_EN);
+}
+
+
+static bool vc4_vec_encoder_mode_fixup(struct drm_encoder *encoder,
+				       const struct drm_display_mode *mode,
+				       struct drm_display_mode *adjusted_mode)
+{
+	return true;
+}
+
+static void vc4_vec_encoder_atomic_mode_set(struct drm_encoder *encoder,
+					struct drm_crtc_state *crtc_state,
+					struct drm_connector_state *conn_state)
+{
+	struct vc4_vec_encoder *vc4_vec_encoder = to_vc4_vec_encoder(encoder);
+	struct vc4_vec *vec = vc4_vec_encoder->vec;
+
+	vec->tv_mode = &vc4_vec_tv_modes[conn_state->tv.mode];
+}
+
+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 = {
+	.disable = vc4_vec_encoder_disable,
+	.enable = vc4_vec_encoder_enable,
+	.mode_fixup = vc4_vec_encoder_mode_fixup,
+	.atomic_check = vc4_vec_encoder_atomic_check,
+	.atomic_mode_set = vc4_vec_encoder_atomic_mode_set,
+};
+
+static const struct of_device_id vc4_vec_dt_match[] = {
+	{ .compatible = "brcm,bcm2835-vec", .data = NULL },
+	{ /* 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);
+	struct drm_device *drm = dev_get_drvdata(master);
+	struct vc4_dev *vc4 = to_vc4_dev(drm);
+	struct vc4_vec *vec;
+	struct vc4_vec_encoder *vc4_vec_encoder;
+	int ret;
+
+	ret = drm_mode_create_tv_properties(drm, ARRAY_SIZE(tv_mode_names),
+					    tv_mode_names);
+	if (ret)
+		return ret;
+
+	vec = devm_kzalloc(dev, sizeof(*vec), GFP_KERNEL);
+	if (!vec)
+		return -ENOMEM;
+
+	vc4_vec_encoder = devm_kzalloc(dev, sizeof(*vc4_vec_encoder),
+				       GFP_KERNEL);
+	if (!vc4_vec_encoder)
+		return -ENOMEM;
+	vc4_vec_encoder->base.type = VC4_ENCODER_TYPE_VEC;
+	vc4_vec_encoder->vec = vec;
+	vec->encoder = &vc4_vec_encoder->base.base;
+
+	vec->pdev = pdev;
+	vec->regs = vc4_ioremap_regs(pdev, 0);
+	if (IS_ERR(vec->regs))
+		return PTR_ERR(vec->regs);
+
+	vec->clock = devm_clk_get(dev, NULL);
+	if (IS_ERR(vec->clock)) {
+		ret = PTR_ERR(vec->clock);
+		if (ret != -EPROBE_DEFER)
+			DRM_ERROR("Failed to get clock: %d\n", ret);
+		return ret;
+	}
+
+	pm_runtime_enable(dev);
+
+	drm_encoder_init(drm, vec->encoder, &vc4_vec_encoder_funcs,
+			 DRM_MODE_ENCODER_TVDAC, NULL);
+	drm_encoder_helper_add(vec->encoder, &vc4_vec_encoder_helper_funcs);
+
+	vec->connector = vc4_vec_connector_init(drm, vec);
+	if (IS_ERR(vec->connector)) {
+		ret = PTR_ERR(vec->connector);
+		goto err_destroy_encoder;
+	}
+
+	dev_set_drvdata(dev, vec);
+
+	vc4->vec = vec;
+
+	return 0;
+
+err_destroy_encoder:
+	drm_encoder_cleanup(vec->encoder);
+	pm_runtime_disable(dev);
+
+	return ret;
+}
+
+static void vc4_vec_unbind(struct device *dev, struct device *master,
+			   void *data)
+{
+	struct drm_device *drm = dev_get_drvdata(master);
+	struct vc4_dev *vc4 = to_vc4_dev(drm);
+	struct vc4_vec *vec = dev_get_drvdata(dev);
+
+	vc4_vec_connector_destroy(vec->connector);
+	drm_encoder_cleanup(vec->encoder);
+	pm_runtime_disable(dev);
+
+	vc4->vec = NULL;
+}
+
+static const struct component_ops vc4_vec_ops = {
+	.bind   = vc4_vec_bind,
+	.unbind = vc4_vec_unbind,
+};
+
+static int vc4_vec_dev_probe(struct platform_device *pdev)
+{
+	return component_add(&pdev->dev, &vc4_vec_ops);
+}
+
+static int vc4_vec_dev_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &vc4_vec_ops);
+	return 0;
+}
+
+struct platform_driver vc4_vec_driver = {
+	.probe = vc4_vec_dev_probe,
+	.remove = vc4_vec_dev_remove,
+	.driver = {
+		.name = "vc4_vec",
+		.of_match_table = vc4_vec_dt_match,
+	},
+};
-- 
2.10.2

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