Linux-libre 4.7.1-gnupck-4.7.1-gnu

19 files changed, 3313 insertions, 0 deletions

diff --git a/drivers/gpu/drm/sun4i/Kconfig b/drivers/gpu/drm/sun4i/Kconfig
new file mode 100644
index 000000000..a4b357db8
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/Kconfig
@@ -0,0 +1,14 @@
+config DRM_SUN4I
+	tristate "DRM Support for Allwinner A10 Display Engine"
+	depends on DRM && ARM && COMMON_CLK
+	depends on ARCH_SUNXI || COMPILE_TEST
+	select DRM_GEM_CMA_HELPER
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_PANEL
+	select REGMAP_MMIO
+	select VIDEOMODE_HELPERS
+	help
+	  Choose this option if you have an Allwinner SoC with a
+	  Display Engine. If M is selected the module will be called
+	  sun4i-drm.
diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile
new file mode 100644
index 000000000..58cd55149
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/Makefile
@@ -0,0 +1,13 @@
+sun4i-drm-y += sun4i_crtc.o
+sun4i-drm-y += sun4i_drv.o
+sun4i-drm-y += sun4i_framebuffer.o
+sun4i-drm-y += sun4i_layer.o
+
+sun4i-tcon-y += sun4i_tcon.o
+sun4i-tcon-y += sun4i_rgb.o
+sun4i-tcon-y += sun4i_dotclock.o
+
+obj-$(CONFIG_DRM_SUN4I)		+= sun4i-drm.o sun4i-tcon.o
+obj-$(CONFIG_DRM_SUN4I)		+= sun4i_backend.o
+
+obj-$(CONFIG_DRM_SUN4I)		+= sun4i_tv.o
diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c
new file mode 100644
index 000000000..3ab560450
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.c
@@ -0,0 +1,364 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_plane_helper.h>
+
+#include <linux/component.h>
+#include <linux/reset.h>
+
+#include "sun4i_backend.h"
+#include "sun4i_drv.h"
+
+static u32 sunxi_rgb2yuv_coef[12] = {
+	0x00000107, 0x00000204, 0x00000064, 0x00000108,
+	0x00003f69, 0x00003ed6, 0x000001c1, 0x00000808,
+	0x000001c1, 0x00003e88, 0x00003fb8, 0x00000808
+};
+
+void sun4i_backend_apply_color_correction(struct sun4i_backend *backend)
+{
+	int i;
+
+	DRM_DEBUG_DRIVER("Applying RGB to YUV color correction\n");
+
+	/* Set color correction */
+	regmap_write(backend->regs, SUN4I_BACKEND_OCCTL_REG,
+		     SUN4I_BACKEND_OCCTL_ENABLE);
+
+	for (i = 0; i < 12; i++)
+		regmap_write(backend->regs, SUN4I_BACKEND_OCRCOEF_REG(i),
+			     sunxi_rgb2yuv_coef[i]);
+}
+EXPORT_SYMBOL(sun4i_backend_apply_color_correction);
+
+void sun4i_backend_disable_color_correction(struct sun4i_backend *backend)
+{
+	DRM_DEBUG_DRIVER("Disabling color correction\n");
+
+	/* Disable color correction */
+	regmap_update_bits(backend->regs, SUN4I_BACKEND_OCCTL_REG,
+			   SUN4I_BACKEND_OCCTL_ENABLE, 0);
+}
+EXPORT_SYMBOL(sun4i_backend_disable_color_correction);
+
+void sun4i_backend_commit(struct sun4i_backend *backend)
+{
+	DRM_DEBUG_DRIVER("Committing changes\n");
+
+	regmap_write(backend->regs, SUN4I_BACKEND_REGBUFFCTL_REG,
+		     SUN4I_BACKEND_REGBUFFCTL_AUTOLOAD_DIS |
+		     SUN4I_BACKEND_REGBUFFCTL_LOADCTL);
+}
+EXPORT_SYMBOL(sun4i_backend_commit);
+
+void sun4i_backend_layer_enable(struct sun4i_backend *backend,
+				int layer, bool enable)
+{
+	u32 val;
+
+	DRM_DEBUG_DRIVER("Enabling layer %d\n", layer);
+
+	if (enable)
+		val = SUN4I_BACKEND_MODCTL_LAY_EN(layer);
+	else
+		val = 0;
+
+	regmap_update_bits(backend->regs, SUN4I_BACKEND_MODCTL_REG,
+			   SUN4I_BACKEND_MODCTL_LAY_EN(layer), val);
+}
+EXPORT_SYMBOL(sun4i_backend_layer_enable);
+
+static int sun4i_backend_drm_format_to_layer(u32 format, u32 *mode)
+{
+	switch (format) {
+	case DRM_FORMAT_ARGB8888:
+		*mode = SUN4I_BACKEND_LAY_FBFMT_ARGB8888;
+		break;
+
+	case DRM_FORMAT_XRGB8888:
+		*mode = SUN4I_BACKEND_LAY_FBFMT_XRGB8888;
+		break;
+
+	case DRM_FORMAT_RGB888:
+		*mode = SUN4I_BACKEND_LAY_FBFMT_RGB888;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+int sun4i_backend_update_layer_coord(struct sun4i_backend *backend,
+				     int layer, struct drm_plane *plane)
+{
+	struct drm_plane_state *state = plane->state;
+	struct drm_framebuffer *fb = state->fb;
+
+	DRM_DEBUG_DRIVER("Updating layer %d\n", layer);
+
+	if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
+		DRM_DEBUG_DRIVER("Primary layer, updating global size W: %u H: %u\n",
+				 state->crtc_w, state->crtc_h);
+		regmap_write(backend->regs, SUN4I_BACKEND_DISSIZE_REG,
+			     SUN4I_BACKEND_DISSIZE(state->crtc_w,
+						   state->crtc_h));
+	}
+
+	/* Set the line width */
+	DRM_DEBUG_DRIVER("Layer line width: %d bits\n", fb->pitches[0] * 8);
+	regmap_write(backend->regs, SUN4I_BACKEND_LAYLINEWIDTH_REG(layer),
+		     fb->pitches[0] * 8);
+
+	/* Set height and width */
+	DRM_DEBUG_DRIVER("Layer size W: %u H: %u\n",
+			 state->crtc_w, state->crtc_h);
+	regmap_write(backend->regs, SUN4I_BACKEND_LAYSIZE_REG(layer),
+		     SUN4I_BACKEND_LAYSIZE(state->crtc_w,
+					   state->crtc_h));
+
+	/* Set base coordinates */
+	DRM_DEBUG_DRIVER("Layer coordinates X: %d Y: %d\n",
+			 state->crtc_x, state->crtc_y);
+	regmap_write(backend->regs, SUN4I_BACKEND_LAYCOOR_REG(layer),
+		     SUN4I_BACKEND_LAYCOOR(state->crtc_x,
+					   state->crtc_y));
+
+	return 0;
+}
+EXPORT_SYMBOL(sun4i_backend_update_layer_coord);
+
+int sun4i_backend_update_layer_formats(struct sun4i_backend *backend,
+				       int layer, struct drm_plane *plane)
+{
+	struct drm_plane_state *state = plane->state;
+	struct drm_framebuffer *fb = state->fb;
+	bool interlaced = false;
+	u32 val;
+	int ret;
+
+	if (plane->state->crtc)
+		interlaced = plane->state->crtc->state->adjusted_mode.flags
+			& DRM_MODE_FLAG_INTERLACE;
+
+	regmap_update_bits(backend->regs, SUN4I_BACKEND_MODCTL_REG,
+			   SUN4I_BACKEND_MODCTL_ITLMOD_EN,
+			   interlaced ? SUN4I_BACKEND_MODCTL_ITLMOD_EN : 0);
+
+	DRM_DEBUG_DRIVER("Switching display backend interlaced mode %s\n",
+			 interlaced ? "on" : "off");
+
+	ret = sun4i_backend_drm_format_to_layer(fb->pixel_format, &val);
+	if (ret) {
+		DRM_DEBUG_DRIVER("Invalid format\n");
+		return val;
+	}
+
+	regmap_update_bits(backend->regs, SUN4I_BACKEND_ATTCTL_REG1(layer),
+			   SUN4I_BACKEND_ATTCTL_REG1_LAY_FBFMT, val);
+
+	return 0;
+}
+EXPORT_SYMBOL(sun4i_backend_update_layer_formats);
+
+int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
+				      int layer, struct drm_plane *plane)
+{
+	struct drm_plane_state *state = plane->state;
+	struct drm_framebuffer *fb = state->fb;
+	struct drm_gem_cma_object *gem;
+	u32 lo_paddr, hi_paddr;
+	dma_addr_t paddr;
+	int bpp;
+
+	/* Get the physical address of the buffer in memory */
+	gem = drm_fb_cma_get_gem_obj(fb, 0);
+
+	DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);
+
+	/* Compute the start of the displayed memory */
+	bpp = drm_format_plane_cpp(fb->pixel_format, 0);
+	paddr = gem->paddr + fb->offsets[0];
+	paddr += (state->src_x >> 16) * bpp;
+	paddr += (state->src_y >> 16) * fb->pitches[0];
+
+	DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr);
+
+	/* Write the 32 lower bits of the address (in bits) */
+	lo_paddr = paddr << 3;
+	DRM_DEBUG_DRIVER("Setting address lower bits to 0x%x\n", lo_paddr);
+	regmap_write(backend->regs, SUN4I_BACKEND_LAYFB_L32ADD_REG(layer),
+		     lo_paddr);
+
+	/* And the upper bits */
+	hi_paddr = paddr >> 29;
+	DRM_DEBUG_DRIVER("Setting address high bits to 0x%x\n", hi_paddr);
+	regmap_update_bits(backend->regs, SUN4I_BACKEND_LAYFB_H4ADD_REG,
+			   SUN4I_BACKEND_LAYFB_H4ADD_MSK(layer),
+			   SUN4I_BACKEND_LAYFB_H4ADD(layer, hi_paddr));
+
+	return 0;
+}
+EXPORT_SYMBOL(sun4i_backend_update_layer_buffer);
+
+static struct regmap_config sun4i_backend_regmap_config = {
+	.reg_bits	= 32,
+	.val_bits	= 32,
+	.reg_stride	= 4,
+	.max_register	= 0x5800,
+};
+
+static int sun4i_backend_bind(struct device *dev, struct device *master,
+			      void *data)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct drm_device *drm = data;
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_backend *backend;
+	struct resource *res;
+	void __iomem *regs;
+	int i, ret;
+
+	backend = devm_kzalloc(dev, sizeof(*backend), GFP_KERNEL);
+	if (!backend)
+		return -ENOMEM;
+	dev_set_drvdata(dev, backend);
+	drv->backend = backend;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(regs)) {
+		dev_err(dev, "Couldn't map the backend registers\n");
+		return PTR_ERR(regs);
+	}
+
+	backend->regs = devm_regmap_init_mmio(dev, regs,
+					      &sun4i_backend_regmap_config);
+	if (IS_ERR(backend->regs)) {
+		dev_err(dev, "Couldn't create the backend0 regmap\n");
+		return PTR_ERR(backend->regs);
+	}
+
+	backend->reset = devm_reset_control_get(dev, NULL);
+	if (IS_ERR(backend->reset)) {
+		dev_err(dev, "Couldn't get our reset line\n");
+		return PTR_ERR(backend->reset);
+	}
+
+	ret = reset_control_deassert(backend->reset);
+	if (ret) {
+		dev_err(dev, "Couldn't deassert our reset line\n");
+		return ret;
+	}
+
+	backend->bus_clk = devm_clk_get(dev, "ahb");
+	if (IS_ERR(backend->bus_clk)) {
+		dev_err(dev, "Couldn't get the backend bus clock\n");
+		ret = PTR_ERR(backend->bus_clk);
+		goto err_assert_reset;
+	}
+	clk_prepare_enable(backend->bus_clk);
+
+	backend->mod_clk = devm_clk_get(dev, "mod");
+	if (IS_ERR(backend->mod_clk)) {
+		dev_err(dev, "Couldn't get the backend module clock\n");
+		ret = PTR_ERR(backend->mod_clk);
+		goto err_disable_bus_clk;
+	}
+	clk_prepare_enable(backend->mod_clk);
+
+	backend->ram_clk = devm_clk_get(dev, "ram");
+	if (IS_ERR(backend->ram_clk)) {
+		dev_err(dev, "Couldn't get the backend RAM clock\n");
+		ret = PTR_ERR(backend->ram_clk);
+		goto err_disable_mod_clk;
+	}
+	clk_prepare_enable(backend->ram_clk);
+
+	/* Reset the registers */
+	for (i = 0x800; i < 0x1000; i += 4)
+		regmap_write(backend->regs, i, 0);
+
+	/* Disable registers autoloading */
+	regmap_write(backend->regs, SUN4I_BACKEND_REGBUFFCTL_REG,
+		     SUN4I_BACKEND_REGBUFFCTL_AUTOLOAD_DIS);
+
+	/* Enable the backend */
+	regmap_write(backend->regs, SUN4I_BACKEND_MODCTL_REG,
+		     SUN4I_BACKEND_MODCTL_DEBE_EN |
+		     SUN4I_BACKEND_MODCTL_START_CTL);
+
+	return 0;
+
+err_disable_mod_clk:
+	clk_disable_unprepare(backend->mod_clk);
+err_disable_bus_clk:
+	clk_disable_unprepare(backend->bus_clk);
+err_assert_reset:
+	reset_control_assert(backend->reset);
+	return ret;
+}
+
+static void sun4i_backend_unbind(struct device *dev, struct device *master,
+				 void *data)
+{
+	struct sun4i_backend *backend = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(backend->ram_clk);
+	clk_disable_unprepare(backend->mod_clk);
+	clk_disable_unprepare(backend->bus_clk);
+	reset_control_assert(backend->reset);
+}
+
+static struct component_ops sun4i_backend_ops = {
+	.bind	= sun4i_backend_bind,
+	.unbind	= sun4i_backend_unbind,
+};
+
+static int sun4i_backend_probe(struct platform_device *pdev)
+{
+	return component_add(&pdev->dev, &sun4i_backend_ops);
+}
+
+static int sun4i_backend_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &sun4i_backend_ops);
+
+	return 0;
+}
+
+static const struct of_device_id sun4i_backend_of_table[] = {
+	{ .compatible = "allwinner,sun5i-a13-display-backend" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sun4i_backend_of_table);
+
+static struct platform_driver sun4i_backend_platform_driver = {
+	.probe		= sun4i_backend_probe,
+	.remove		= sun4i_backend_remove,
+	.driver		= {
+		.name		= "sun4i-backend",
+		.of_match_table	= sun4i_backend_of_table,
+	},
+};
+module_platform_driver(sun4i_backend_platform_driver);
+
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Allwinner A10 Display Backend Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.h b/drivers/gpu/drm/sun4i/sun4i_backend.h
new file mode 100644
index 000000000..7070bb343
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.h
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_BACKEND_H_
+#define _SUN4I_BACKEND_H_
+
+#include <linux/clk.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#define SUN4I_BACKEND_MODCTL_REG		0x800
+#define SUN4I_BACKEND_MODCTL_LINE_SEL			BIT(29)
+#define SUN4I_BACKEND_MODCTL_ITLMOD_EN			BIT(28)
+#define SUN4I_BACKEND_MODCTL_OUT_SEL			GENMASK(22, 20)
+#define SUN4I_BACKEND_MODCTL_OUT_LCD				(0 << 20)
+#define SUN4I_BACKEND_MODCTL_OUT_FE0				(6 << 20)
+#define SUN4I_BACKEND_MODCTL_OUT_FE1				(7 << 20)
+#define SUN4I_BACKEND_MODCTL_HWC_EN			BIT(16)
+#define SUN4I_BACKEND_MODCTL_LAY_EN(l)			BIT(8 + l)
+#define SUN4I_BACKEND_MODCTL_OCSC_EN			BIT(5)
+#define SUN4I_BACKEND_MODCTL_DFLK_EN			BIT(4)
+#define SUN4I_BACKEND_MODCTL_DLP_START_CTL		BIT(2)
+#define SUN4I_BACKEND_MODCTL_START_CTL			BIT(1)
+#define SUN4I_BACKEND_MODCTL_DEBE_EN			BIT(0)
+
+#define SUN4I_BACKEND_BACKCOLOR_REG		0x804
+#define SUN4I_BACKEND_BACKCOLOR(r, g, b)		(((r) << 16) | ((g) << 8) | (b))
+
+#define SUN4I_BACKEND_DISSIZE_REG		0x808
+#define SUN4I_BACKEND_DISSIZE(w, h)			(((((h) - 1) & 0xffff) << 16) | \
+							 (((w) - 1) & 0xffff))
+
+#define SUN4I_BACKEND_LAYSIZE_REG(l)		(0x810 + (0x4 * (l)))
+#define SUN4I_BACKEND_LAYSIZE(w, h)			(((((h) - 1) & 0x1fff) << 16) | \
+							 (((w) - 1) & 0x1fff))
+
+#define SUN4I_BACKEND_LAYCOOR_REG(l)		(0x820 + (0x4 * (l)))
+#define SUN4I_BACKEND_LAYCOOR(x, y)			((((u32)(y) & 0xffff) << 16) | \
+							 ((u32)(x) & 0xffff))
+
+#define SUN4I_BACKEND_LAYLINEWIDTH_REG(l)	(0x840 + (0x4 * (l)))
+
+#define SUN4I_BACKEND_LAYFB_L32ADD_REG(l)	(0x850 + (0x4 * (l)))
+
+#define SUN4I_BACKEND_LAYFB_H4ADD_REG		0x860
+#define SUN4I_BACKEND_LAYFB_H4ADD_MSK(l)		GENMASK(3 + ((l) * 8), 0)
+#define SUN4I_BACKEND_LAYFB_H4ADD(l, val)			((val) << ((l) * 8))
+
+#define SUN4I_BACKEND_REGBUFFCTL_REG		0x870
+#define SUN4I_BACKEND_REGBUFFCTL_AUTOLOAD_DIS		BIT(1)
+#define SUN4I_BACKEND_REGBUFFCTL_LOADCTL		BIT(0)
+
+#define SUN4I_BACKEND_CKMAX_REG			0x880
+#define SUN4I_BACKEND_CKMIN_REG			0x884
+#define SUN4I_BACKEND_CKCFG_REG			0x888
+#define SUN4I_BACKEND_ATTCTL_REG0(l)		(0x890 + (0x4 * (l)))
+#define SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL_MASK	BIT(15)
+#define SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL(x)		((x) << 15)
+#define SUN4I_BACKEND_ATTCTL_REG0_LAY_PRISEL_MASK	GENMASK(11, 10)
+#define SUN4I_BACKEND_ATTCTL_REG0_LAY_PRISEL(x)			((x) << 10)
+
+#define SUN4I_BACKEND_ATTCTL_REG1(l)		(0x8a0 + (0x4 * (l)))
+#define SUN4I_BACKEND_ATTCTL_REG1_LAY_HSCAFCT		GENMASK(15, 14)
+#define SUN4I_BACKEND_ATTCTL_REG1_LAY_WSCAFCT		GENMASK(13, 12)
+#define SUN4I_BACKEND_ATTCTL_REG1_LAY_FBFMT		GENMASK(11, 8)
+#define SUN4I_BACKEND_LAY_FBFMT_1BPP				(0 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_2BPP				(1 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_4BPP				(2 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_8BPP				(3 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGB655				(4 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGB565				(5 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGB556				(6 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_ARGB1555			(7 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGBA5551			(8 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_XRGB8888			(9 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_ARGB8888			(10 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGB888				(11 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_ARGB4444			(12 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGBA4444			(13 << 8)
+
+#define SUN4I_BACKEND_DLCDPCTL_REG		0x8b0
+#define SUN4I_BACKEND_DLCDPFRMBUF_ADDRCTL_REG	0x8b4
+#define SUN4I_BACKEND_DLCDPCOOR_REG0		0x8b8
+#define SUN4I_BACKEND_DLCDPCOOR_REG1		0x8bc
+
+#define SUN4I_BACKEND_INT_EN_REG		0x8c0
+#define SUN4I_BACKEND_INT_FLAG_REG		0x8c4
+#define SUN4I_BACKEND_REG_LOAD_FINISHED			BIT(1)
+
+#define SUN4I_BACKEND_HWCCTL_REG		0x8d8
+#define SUN4I_BACKEND_HWCFBCTL_REG		0x8e0
+#define SUN4I_BACKEND_WBCTL_REG			0x8f0
+#define SUN4I_BACKEND_WBADD_REG			0x8f4
+#define SUN4I_BACKEND_WBLINEWIDTH_REG		0x8f8
+#define SUN4I_BACKEND_SPREN_REG			0x900
+#define SUN4I_BACKEND_SPRFMTCTL_REG		0x908
+#define SUN4I_BACKEND_SPRALPHACTL_REG		0x90c
+#define SUN4I_BACKEND_IYUVCTL_REG		0x920
+#define SUN4I_BACKEND_IYUVADD_REG(c)		(0x930 + (0x4 * (c)))
+#define SUN4I_BACKEND_IYUVLINEWITDTH_REG(c)	(0x940 + (0x4 * (c)))
+#define SUN4I_BACKEND_YGCOEF_REG(c)		(0x950 + (0x4 * (c)))
+#define SUN4I_BACKEND_YGCONS_REG		0x95c
+#define SUN4I_BACKEND_URCOEF_REG(c)		(0x960 + (0x4 * (c)))
+#define SUN4I_BACKEND_URCONS_REG		0x96c
+#define SUN4I_BACKEND_VBCOEF_REG(c)		(0x970 + (0x4 * (c)))
+#define SUN4I_BACKEND_VBCONS_REG		0x97c
+#define SUN4I_BACKEND_KSCTL_REG			0x980
+#define SUN4I_BACKEND_KSBKCOLOR_REG		0x984
+#define SUN4I_BACKEND_KSFSTLINEWIDTH_REG	0x988
+#define SUN4I_BACKEND_KSVSCAFCT_REG		0x98c
+#define SUN4I_BACKEND_KSHSCACOEF_REG(x)		(0x9a0 + (0x4 * (x)))
+#define SUN4I_BACKEND_OCCTL_REG			0x9c0
+#define SUN4I_BACKEND_OCCTL_ENABLE			BIT(0)
+
+#define SUN4I_BACKEND_OCRCOEF_REG(x)		(0x9d0 + (0x4 * (x)))
+#define SUN4I_BACKEND_OCRCONS_REG		0x9dc
+#define SUN4I_BACKEND_OCGCOEF_REG(x)		(0x9e0 + (0x4 * (x)))
+#define SUN4I_BACKEND_OCGCONS_REG		0x9ec
+#define SUN4I_BACKEND_OCBCOEF_REG(x)		(0x9f0 + (0x4 * (x)))
+#define SUN4I_BACKEND_OCBCONS_REG		0x9fc
+#define SUN4I_BACKEND_SPRCOORCTL_REG(s)		(0xa00 + (0x4 * (s)))
+#define SUN4I_BACKEND_SPRATTCTL_REG(s)		(0xb00 + (0x4 * (s)))
+#define SUN4I_BACKEND_SPRADD_REG(s)		(0xc00 + (0x4 * (s)))
+#define SUN4I_BACKEND_SPRLINEWIDTH_REG(s)	(0xd00 + (0x4 * (s)))
+
+#define SUN4I_BACKEND_SPRPALTAB_OFF		0x4000
+#define SUN4I_BACKEND_GAMMATAB_OFF		0x4400
+#define SUN4I_BACKEND_HWCPATTERN_OFF		0x4800
+#define SUN4I_BACKEND_HWCCOLORTAB_OFF		0x4c00
+#define SUN4I_BACKEND_PIPE_OFF(p)		(0x5000 + (0x400 * (p)))
+
+struct sun4i_backend {
+	struct regmap		*regs;
+
+	struct reset_control	*reset;
+
+	struct clk		*bus_clk;
+	struct clk		*mod_clk;
+	struct clk		*ram_clk;
+};
+
+void sun4i_backend_apply_color_correction(struct sun4i_backend *backend);
+void sun4i_backend_disable_color_correction(struct sun4i_backend *backend);
+
+void sun4i_backend_commit(struct sun4i_backend *backend);
+
+void sun4i_backend_layer_enable(struct sun4i_backend *backend,
+				int layer, bool enable);
+int sun4i_backend_update_layer_coord(struct sun4i_backend *backend,
+				     int layer, struct drm_plane *plane);
+int sun4i_backend_update_layer_formats(struct sun4i_backend *backend,
+				       int layer, struct drm_plane *plane);
+int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
+				      int layer, struct drm_plane *plane);
+
+#endif /* _SUN4I_BACKEND_H_ */
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
new file mode 100644
index 000000000..41cacecbe
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_modes.h>
+
+#include <linux/clk-provider.h>
+#include <linux/ioport.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/regmap.h>
+
+#include <video/videomode.h>
+
+#include "sun4i_backend.h"
+#include "sun4i_crtc.h"
+#include "sun4i_drv.h"
+#include "sun4i_tcon.h"
+
+static void sun4i_crtc_atomic_begin(struct drm_crtc *crtc,
+				    struct drm_crtc_state *old_state)
+{
+	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+	struct drm_device *dev = crtc->dev;
+	unsigned long flags;
+
+	if (crtc->state->event) {
+		WARN_ON(drm_crtc_vblank_get(crtc) != 0);
+
+		spin_lock_irqsave(&dev->event_lock, flags);
+		scrtc->event = crtc->state->event;
+		spin_unlock_irqrestore(&dev->event_lock, flags);
+		crtc->state->event = NULL;
+	 }
+}
+
+static void sun4i_crtc_atomic_flush(struct drm_crtc *crtc,
+				    struct drm_crtc_state *old_state)
+{
+	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+	struct sun4i_drv *drv = scrtc->drv;
+
+	DRM_DEBUG_DRIVER("Committing plane changes\n");
+
+	sun4i_backend_commit(drv->backend);
+}
+
+static void sun4i_crtc_disable(struct drm_crtc *crtc)
+{
+	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+	struct sun4i_drv *drv = scrtc->drv;
+
+	DRM_DEBUG_DRIVER("Disabling the CRTC\n");
+
+	sun4i_tcon_disable(drv->tcon);
+
+	if (crtc->state->event && !crtc->state->active) {
+		spin_lock_irq(&crtc->dev->event_lock);
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+		spin_unlock_irq(&crtc->dev->event_lock);
+
+		crtc->state->event = NULL;
+	}
+}
+
+static void sun4i_crtc_enable(struct drm_crtc *crtc)
+{
+	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+	struct sun4i_drv *drv = scrtc->drv;
+
+	DRM_DEBUG_DRIVER("Enabling the CRTC\n");
+
+	sun4i_tcon_enable(drv->tcon);
+}
+
+static const struct drm_crtc_helper_funcs sun4i_crtc_helper_funcs = {
+	.atomic_begin	= sun4i_crtc_atomic_begin,
+	.atomic_flush	= sun4i_crtc_atomic_flush,
+	.disable	= sun4i_crtc_disable,
+	.enable		= sun4i_crtc_enable,
+};
+
+static const struct drm_crtc_funcs sun4i_crtc_funcs = {
+	.atomic_destroy_state	= drm_atomic_helper_crtc_destroy_state,
+	.atomic_duplicate_state	= drm_atomic_helper_crtc_duplicate_state,
+	.destroy		= drm_crtc_cleanup,
+	.page_flip		= drm_atomic_helper_page_flip,
+	.reset			= drm_atomic_helper_crtc_reset,
+	.set_config		= drm_atomic_helper_set_config,
+};
+
+struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm)
+{
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_crtc *scrtc;
+	int ret;
+
+	scrtc = devm_kzalloc(drm->dev, sizeof(*scrtc), GFP_KERNEL);
+	if (!scrtc)
+		return NULL;
+	scrtc->drv = drv;
+
+	ret = drm_crtc_init_with_planes(drm, &scrtc->crtc,
+					drv->primary,
+					NULL,
+					&sun4i_crtc_funcs,
+					NULL);
+	if (ret) {
+		dev_err(drm->dev, "Couldn't init DRM CRTC\n");
+		return NULL;
+	}
+
+	drm_crtc_helper_add(&scrtc->crtc, &sun4i_crtc_helper_funcs);
+
+	return scrtc;
+}
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.h b/drivers/gpu/drm/sun4i/sun4i_crtc.h
new file mode 100644
index 000000000..dec8ce4d9
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_CRTC_H_
+#define _SUN4I_CRTC_H_
+
+struct sun4i_crtc {
+	struct drm_crtc			crtc;
+	struct drm_pending_vblank_event	*event;
+
+	struct sun4i_drv		*drv;
+};
+
+static inline struct sun4i_crtc *drm_crtc_to_sun4i_crtc(struct drm_crtc *crtc)
+{
+	return container_of(crtc, struct sun4i_crtc, crtc);
+}
+
+struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm);
+
+#endif /* _SUN4I_CRTC_H_ */
diff --git a/drivers/gpu/drm/sun4i/sun4i_dotclock.c b/drivers/gpu/drm/sun4i/sun4i_dotclock.c
new file mode 100644
index 000000000..5b3463197
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_dotclock.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2016 Free Electrons
+ * Copyright (C) 2016 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+
+#include "sun4i_tcon.h"
+
+struct sun4i_dclk {
+	struct clk_hw	hw;
+	struct regmap	*regmap;
+};
+
+static inline struct sun4i_dclk *hw_to_dclk(struct clk_hw *hw)
+{
+	return container_of(hw, struct sun4i_dclk, hw);
+}
+
+static void sun4i_dclk_disable(struct clk_hw *hw)
+{
+	struct sun4i_dclk *dclk = hw_to_dclk(hw);
+
+	regmap_update_bits(dclk->regmap, SUN4I_TCON0_DCLK_REG,
+			   BIT(SUN4I_TCON0_DCLK_GATE_BIT), 0);
+}
+
+static int sun4i_dclk_enable(struct clk_hw *hw)
+{
+	struct sun4i_dclk *dclk = hw_to_dclk(hw);
+
+	return regmap_update_bits(dclk->regmap, SUN4I_TCON0_DCLK_REG,
+				  BIT(SUN4I_TCON0_DCLK_GATE_BIT),
+				  BIT(SUN4I_TCON0_DCLK_GATE_BIT));
+}
+
+static int sun4i_dclk_is_enabled(struct clk_hw *hw)
+{
+	struct sun4i_dclk *dclk = hw_to_dclk(hw);
+	u32 val;
+
+	regmap_read(dclk->regmap, SUN4I_TCON0_DCLK_REG, &val);
+
+	return val & BIT(SUN4I_TCON0_DCLK_GATE_BIT);
+}
+
+static unsigned long sun4i_dclk_recalc_rate(struct clk_hw *hw,
+					    unsigned long parent_rate)
+{
+	struct sun4i_dclk *dclk = hw_to_dclk(hw);
+	u32 val;
+
+	regmap_read(dclk->regmap, SUN4I_TCON0_DCLK_REG, &val);
+
+	val >>= SUN4I_TCON0_DCLK_DIV_SHIFT;
+	val &= SUN4I_TCON0_DCLK_DIV_WIDTH;
+
+	if (!val)
+		val = 1;
+
+	return parent_rate / val;
+}
+
+static long sun4i_dclk_round_rate(struct clk_hw *hw, unsigned long rate,
+				  unsigned long *parent_rate)
+{
+	unsigned long best_parent = 0;
+	u8 best_div = 1;
+	int i;
+
+	for (i = 6; i < 127; i++) {
+		unsigned long ideal = rate * i;
+		unsigned long rounded;
+
+		rounded = clk_hw_round_rate(clk_hw_get_parent(hw),
+					    ideal);
+
+		if (rounded == ideal) {
+			best_parent = rounded;
+			best_div = i;
+			goto out;
+		}
+
+		if ((rounded < ideal) && (rounded > best_parent)) {
+			best_parent = rounded;
+			best_div = i;
+		}
+	}
+
+out:
+	*parent_rate = best_parent;
+
+	return best_parent / best_div;
+}
+
+static int sun4i_dclk_set_rate(struct clk_hw *hw, unsigned long rate,
+			       unsigned long parent_rate)
+{
+	struct sun4i_dclk *dclk = hw_to_dclk(hw);
+	u8 div = parent_rate / rate;
+
+	return regmap_update_bits(dclk->regmap, SUN4I_TCON0_DCLK_REG,
+				  GENMASK(6, 0), div);
+}
+
+static int sun4i_dclk_get_phase(struct clk_hw *hw)
+{
+	struct sun4i_dclk *dclk = hw_to_dclk(hw);
+	u32 val;
+
+	regmap_read(dclk->regmap, SUN4I_TCON0_IO_POL_REG, &val);
+
+	val >>= 28;
+	val &= 3;
+
+	return val * 120;
+}
+
+static int sun4i_dclk_set_phase(struct clk_hw *hw, int degrees)
+{
+	struct sun4i_dclk *dclk = hw_to_dclk(hw);
+
+	regmap_update_bits(dclk->regmap, SUN4I_TCON0_IO_POL_REG,
+			   GENMASK(29, 28),
+			   degrees / 120);
+
+	return 0;
+}
+
+static const struct clk_ops sun4i_dclk_ops = {
+	.disable	= sun4i_dclk_disable,
+	.enable		= sun4i_dclk_enable,
+	.is_enabled	= sun4i_dclk_is_enabled,
+
+	.recalc_rate	= sun4i_dclk_recalc_rate,
+	.round_rate	= sun4i_dclk_round_rate,
+	.set_rate	= sun4i_dclk_set_rate,
+
+	.get_phase	= sun4i_dclk_get_phase,
+	.set_phase	= sun4i_dclk_set_phase,
+};
+
+int sun4i_dclk_create(struct device *dev, struct sun4i_tcon *tcon)
+{
+	const char *clk_name, *parent_name;
+	struct clk_init_data init;
+	struct sun4i_dclk *dclk;
+	int ret;
+
+	parent_name = __clk_get_name(tcon->sclk0);
+	ret = of_property_read_string_index(dev->of_node,
+					    "clock-output-names", 0,
+					    &clk_name);
+	if (ret)
+		return ret;
+
+	dclk = devm_kzalloc(dev, sizeof(*dclk), GFP_KERNEL);
+	if (!dclk)
+		return -ENOMEM;
+
+	init.name = clk_name;
+	init.ops = &sun4i_dclk_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+	init.flags = CLK_SET_RATE_PARENT;
+
+	dclk->regmap = tcon->regs;
+	dclk->hw.init = &init;
+
+	tcon->dclk = clk_register(dev, &dclk->hw);
+	if (IS_ERR(tcon->dclk))
+		return PTR_ERR(tcon->dclk);
+
+	return 0;
+}
+EXPORT_SYMBOL(sun4i_dclk_create);
+
+int sun4i_dclk_free(struct sun4i_tcon *tcon)
+{
+	clk_unregister(tcon->dclk);
+	return 0;
+}
+EXPORT_SYMBOL(sun4i_dclk_free);
diff --git a/drivers/gpu/drm/sun4i/sun4i_dotclock.h b/drivers/gpu/drm/sun4i/sun4i_dotclock.h
new file mode 100644
index 000000000..d5e25fa9e
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_dotclock.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_DOTCLOCK_H_
+#define _SUN4I_DOTCLOCK_H_
+
+struct sun4i_tcon;
+
+int sun4i_dclk_create(struct device *dev, struct sun4i_tcon *tcon);
+int sun4i_dclk_free(struct sun4i_tcon *tcon);
+
+#endif /* _SUN4I_DOTCLOCK_H_ */
diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
new file mode 100644
index 000000000..937394cbc
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -0,0 +1,351 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/component.h>
+#include <linux/of_graph.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#include "sun4i_crtc.h"
+#include "sun4i_drv.h"
+#include "sun4i_framebuffer.h"
+#include "sun4i_layer.h"
+#include "sun4i_tcon.h"
+
+static int sun4i_drv_enable_vblank(struct drm_device *drm, unsigned int pipe)
+{
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_tcon *tcon = drv->tcon;
+
+	DRM_DEBUG_DRIVER("Enabling VBLANK on pipe %d\n", pipe);
+
+	sun4i_tcon_enable_vblank(tcon, true);
+
+	return 0;
+}
+
+static void sun4i_drv_disable_vblank(struct drm_device *drm, unsigned int pipe)
+{
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_tcon *tcon = drv->tcon;
+
+	DRM_DEBUG_DRIVER("Disabling VBLANK on pipe %d\n", pipe);
+
+	sun4i_tcon_enable_vblank(tcon, false);
+}
+
+static const struct file_operations sun4i_drv_fops = {
+	.owner		= THIS_MODULE,
+	.open		= drm_open,
+	.release	= drm_release,
+	.unlocked_ioctl	= drm_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= drm_compat_ioctl,
+#endif
+	.poll		= drm_poll,
+	.read		= drm_read,
+	.llseek		= no_llseek,
+	.mmap		= drm_gem_cma_mmap,
+};
+
+static struct drm_driver sun4i_drv_driver = {
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC,
+
+	/* Generic Operations */
+	.fops			= &sun4i_drv_fops,
+	.name			= "sun4i-drm",
+	.desc			= "Allwinner sun4i Display Engine",
+	.date			= "20150629",
+	.major			= 1,
+	.minor			= 0,
+
+	/* GEM Operations */
+	.dumb_create		= drm_gem_cma_dumb_create,
+	.dumb_destroy		= drm_gem_dumb_destroy,
+	.dumb_map_offset	= drm_gem_cma_dumb_map_offset,
+	.gem_free_object	= drm_gem_cma_free_object,
+	.gem_vm_ops		= &drm_gem_cma_vm_ops,
+
+	/* PRIME Operations */
+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
+	.gem_prime_import	= drm_gem_prime_import,
+	.gem_prime_export	= drm_gem_prime_export,
+	.gem_prime_get_sg_table	= drm_gem_cma_prime_get_sg_table,
+	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+	.gem_prime_vmap		= drm_gem_cma_prime_vmap,
+	.gem_prime_vunmap	= drm_gem_cma_prime_vunmap,
+	.gem_prime_mmap		= drm_gem_cma_prime_mmap,
+
+	/* Frame Buffer Operations */
+
+	/* VBlank Operations */
+	.get_vblank_counter	= drm_vblank_no_hw_counter,
+	.enable_vblank		= sun4i_drv_enable_vblank,
+	.disable_vblank		= sun4i_drv_disable_vblank,
+};
+
+static void sun4i_remove_framebuffers(void)
+{
+	struct apertures_struct *ap;
+
+	ap = alloc_apertures(1);
+	if (!ap)
+		return;
+
+	/* The framebuffer can be located anywhere in RAM */
+	ap->ranges[0].base = 0;
+	ap->ranges[0].size = ~0;
+
+	remove_conflicting_framebuffers(ap, "sun4i-drm-fb", false);
+	kfree(ap);
+}
+
+static int sun4i_drv_bind(struct device *dev)
+{
+	struct drm_device *drm;
+	struct sun4i_drv *drv;
+	int ret;
+
+	drm = drm_dev_alloc(&sun4i_drv_driver, dev);
+	if (!drm)
+		return -ENOMEM;
+
+	ret = drm_dev_set_unique(drm, dev_name(drm->dev));
+	if (ret)
+		goto free_drm;
+
+	drv = devm_kzalloc(dev, sizeof(*drv), GFP_KERNEL);
+	if (!drv) {
+		ret = -ENOMEM;
+		goto free_drm;
+	}
+	drm->dev_private = drv;
+
+	drm_vblank_init(drm, 1);
+	drm_mode_config_init(drm);
+
+	ret = component_bind_all(drm->dev, drm);
+	if (ret) {
+		dev_err(drm->dev, "Couldn't bind all pipelines components\n");
+		goto free_drm;
+	}
+
+	/* Create our layers */
+	drv->layers = sun4i_layers_init(drm);
+	if (!drv->layers) {
+		dev_err(drm->dev, "Couldn't create the planes\n");
+		ret = -EINVAL;
+		goto free_drm;
+	}
+
+	/* Create our CRTC */
+	drv->crtc = sun4i_crtc_init(drm);
+	if (!drv->crtc) {
+		dev_err(drm->dev, "Couldn't create the CRTC\n");
+		ret = -EINVAL;
+		goto free_drm;
+	}
+	drm->irq_enabled = true;
+
+	/* Remove early framebuffers (ie. simplefb) */
+	sun4i_remove_framebuffers();
+
+	/* Create our framebuffer */
+	drv->fbdev = sun4i_framebuffer_init(drm);
+	if (IS_ERR(drv->fbdev)) {
+		dev_err(drm->dev, "Couldn't create our framebuffer\n");
+		ret = PTR_ERR(drv->fbdev);
+		goto free_drm;
+	}
+
+	/* Enable connectors polling */
+	drm_kms_helper_poll_init(drm);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		goto free_drm;
+
+	ret = drm_connector_register_all(drm);
+	if (ret)
+		goto unregister_drm;
+
+	return 0;
+
+unregister_drm:
+	drm_dev_unregister(drm);
+free_drm:
+	drm_dev_unref(drm);
+	return ret;
+}
+
+static void sun4i_drv_unbind(struct device *dev)
+{
+	struct drm_device *drm = dev_get_drvdata(dev);
+
+	drm_connector_unregister_all(drm);
+	drm_dev_unregister(drm);
+	drm_kms_helper_poll_fini(drm);
+	sun4i_framebuffer_free(drm);
+	drm_vblank_cleanup(drm);
+	drm_dev_unref(drm);
+}
+
+static const struct component_master_ops sun4i_drv_master_ops = {
+	.bind	= sun4i_drv_bind,
+	.unbind	= sun4i_drv_unbind,
+};
+
+static bool sun4i_drv_node_is_frontend(struct device_node *node)
+{
+	return of_device_is_compatible(node,
+				       "allwinner,sun5i-a13-display-frontend");
+}
+
+static bool sun4i_drv_node_is_tcon(struct device_node *node)
+{
+	return of_device_is_compatible(node, "allwinner,sun5i-a13-tcon");
+}
+
+static int compare_of(struct device *dev, void *data)
+{
+	DRM_DEBUG_DRIVER("Comparing of node %s with %s\n",
+			 of_node_full_name(dev->of_node),
+			 of_node_full_name(data));
+
+	return dev->of_node == data;
+}
+
+static int sun4i_drv_add_endpoints(struct device *dev,
+				   struct component_match **match,
+				   struct device_node *node)
+{
+	struct device_node *port, *ep, *remote;
+	int count = 0;
+
+	/*
+	 * We don't support the frontend for now, so we will never
+	 * have a device bound. Just skip over it, but we still want
+	 * the rest our pipeline to be added.
+	 */
+	if (!sun4i_drv_node_is_frontend(node) &&
+	    !of_device_is_available(node))
+		return 0;
+
+	if (!sun4i_drv_node_is_frontend(node)) {
+		/* Add current component */
+		DRM_DEBUG_DRIVER("Adding component %s\n",
+				 of_node_full_name(node));
+		component_match_add(dev, match, compare_of, node);
+		count++;
+	}
+
+	/* Inputs are listed first, then outputs */
+	port = of_graph_get_port_by_id(node, 1);
+	if (!port) {
+		DRM_DEBUG_DRIVER("No output to bind\n");
+		return count;
+	}
+
+	for_each_available_child_of_node(port, ep) {
+		remote = of_graph_get_remote_port_parent(ep);
+		if (!remote) {
+			DRM_DEBUG_DRIVER("Error retrieving the output node\n");
+			of_node_put(remote);
+			continue;
+		}
+
+		/*
+		 * If the node is our TCON, the first port is used for our
+		 * panel, and will not be part of the
+		 * component framework.
+		 */
+		if (sun4i_drv_node_is_tcon(node)) {
+			struct of_endpoint endpoint;
+
+			if (of_graph_parse_endpoint(ep, &endpoint)) {
+				DRM_DEBUG_DRIVER("Couldn't parse endpoint\n");
+				continue;
+			}
+
+			if (!endpoint.id) {
+				DRM_DEBUG_DRIVER("Endpoint is our panel... skipping\n");
+				continue;
+			}
+		}
+
+		/* Walk down our tree */
+		count += sun4i_drv_add_endpoints(dev, match, remote);
+
+		of_node_put(remote);
+	}
+
+	return count;
+}
+
+static int sun4i_drv_probe(struct platform_device *pdev)
+{
+	struct component_match *match = NULL;
+	struct device_node *np = pdev->dev.of_node;
+	int i, count = 0;
+
+	for (i = 0;; i++) {
+		struct device_node *pipeline = of_parse_phandle(np,
+								"allwinner,pipelines",
+								i);
+		if (!pipeline)
+			break;
+
+		count += sun4i_drv_add_endpoints(&pdev->dev, &match,
+						pipeline);
+		of_node_put(pipeline);
+
+		DRM_DEBUG_DRIVER("Queued %d outputs on pipeline %d\n",
+				 count, i);
+	}
+
+	if (count)
+		return component_master_add_with_match(&pdev->dev,
+						       &sun4i_drv_master_ops,
+						       match);
+	else
+		return 0;
+}
+
+static int sun4i_drv_remove(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static const struct of_device_id sun4i_drv_of_table[] = {
+	{ .compatible = "allwinner,sun5i-a13-display-engine" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sun4i_drv_of_table);
+
+static struct platform_driver sun4i_drv_platform_driver = {
+	.probe		= sun4i_drv_probe,
+	.remove		= sun4i_drv_remove,
+	.driver		= {
+		.name		= "sun4i-drm",
+		.of_match_table	= sun4i_drv_of_table,
+	},
+};
+module_platform_driver(sun4i_drv_platform_driver);
+
+MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Allwinner A10 Display Engine DRM/KMS Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.h b/drivers/gpu/drm/sun4i/sun4i_drv.h
new file mode 100644
index 000000000..597353eab
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_DRV_H_
+#define _SUN4I_DRV_H_
+
+#include <linux/clk.h>
+#include <linux/regmap.h>
+
+struct sun4i_drv {
+	struct sun4i_backend	*backend;
+	struct sun4i_crtc	*crtc;
+	struct sun4i_tcon	*tcon;
+
+	struct drm_plane	*primary;
+	struct drm_fbdev_cma	*fbdev;
+
+	struct sun4i_layer	**layers;
+};
+
+#endif /* _SUN4I_DRV_H_ */
diff --git a/drivers/gpu/drm/sun4i/sun4i_framebuffer.c b/drivers/gpu/drm/sun4i/sun4i_framebuffer.c
new file mode 100644
index 000000000..a0b30c216
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_framebuffer.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drmP.h>
+
+#include "sun4i_drv.h"
+
+static void sun4i_de_output_poll_changed(struct drm_device *drm)
+{
+	struct sun4i_drv *drv = drm->dev_private;
+
+	if (drv->fbdev)
+		drm_fbdev_cma_hotplug_event(drv->fbdev);
+}
+
+static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
+	.output_poll_changed	= sun4i_de_output_poll_changed,
+	.atomic_check		= drm_atomic_helper_check,
+	.atomic_commit		= drm_atomic_helper_commit,
+	.fb_create		= drm_fb_cma_create,
+};
+
+struct drm_fbdev_cma *sun4i_framebuffer_init(struct drm_device *drm)
+{
+	drm_mode_config_reset(drm);
+
+	drm->mode_config.max_width = 8192;
+	drm->mode_config.max_height = 8192;
+
+	drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
+
+	return drm_fbdev_cma_init(drm, 32,
+				  drm->mode_config.num_crtc,
+				  drm->mode_config.num_connector);
+}
+
+void sun4i_framebuffer_free(struct drm_device *drm)
+{
+	struct sun4i_drv *drv = drm->dev_private;
+
+	drm_fbdev_cma_fini(drv->fbdev);
+	drm_mode_config_cleanup(drm);
+}
diff --git a/drivers/gpu/drm/sun4i/sun4i_framebuffer.h b/drivers/gpu/drm/sun4i/sun4i_framebuffer.h
new file mode 100644
index 000000000..3afd65252
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_framebuffer.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_FRAMEBUFFER_H_
+#define _SUN4I_FRAMEBUFFER_H_
+
+struct drm_fbdev_cma *sun4i_framebuffer_init(struct drm_device *drm);
+void sun4i_framebuffer_free(struct drm_device *drm);
+
+#endif /* _SUN4I_FRAMEBUFFER_H_ */
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
new file mode 100644
index 000000000..068ab8063
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drmP.h>
+
+#include "sun4i_backend.h"
+#include "sun4i_drv.h"
+#include "sun4i_layer.h"
+
+#define SUN4I_NUM_LAYERS	2
+
+static int sun4i_backend_layer_atomic_check(struct drm_plane *plane,
+					    struct drm_plane_state *state)
+{
+	return 0;
+}
+
+static void sun4i_backend_layer_atomic_disable(struct drm_plane *plane,
+					       struct drm_plane_state *old_state)
+{
+	struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
+	struct sun4i_drv *drv = layer->drv;
+	struct sun4i_backend *backend = drv->backend;
+
+	sun4i_backend_layer_enable(backend, layer->id, false);
+}
+
+static void sun4i_backend_layer_atomic_update(struct drm_plane *plane,
+					      struct drm_plane_state *old_state)
+{
+	struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
+	struct sun4i_drv *drv = layer->drv;
+	struct sun4i_backend *backend = drv->backend;
+
+	sun4i_backend_update_layer_coord(backend, layer->id, plane);
+	sun4i_backend_update_layer_formats(backend, layer->id, plane);
+	sun4i_backend_update_layer_buffer(backend, layer->id, plane);
+	sun4i_backend_layer_enable(backend, layer->id, true);
+}
+
+static struct drm_plane_helper_funcs sun4i_backend_layer_helper_funcs = {
+	.atomic_check	= sun4i_backend_layer_atomic_check,
+	.atomic_disable	= sun4i_backend_layer_atomic_disable,
+	.atomic_update	= sun4i_backend_layer_atomic_update,
+};
+
+static const struct drm_plane_funcs sun4i_backend_layer_funcs = {
+	.atomic_destroy_state	= drm_atomic_helper_plane_destroy_state,
+	.atomic_duplicate_state	= drm_atomic_helper_plane_duplicate_state,
+	.destroy		= drm_plane_cleanup,
+	.disable_plane		= drm_atomic_helper_disable_plane,
+	.reset			= drm_atomic_helper_plane_reset,
+	.update_plane		= drm_atomic_helper_update_plane,
+};
+
+static const uint32_t sun4i_backend_layer_formats[] = {
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_RGB888,
+};
+
+static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
+						enum drm_plane_type type)
+{
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_layer *layer;
+	int ret;
+
+	layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
+	if (!layer)
+		return ERR_PTR(-ENOMEM);
+
+	ret = drm_universal_plane_init(drm, &layer->plane, BIT(0),
+				       &sun4i_backend_layer_funcs,
+				       sun4i_backend_layer_formats,
+				       ARRAY_SIZE(sun4i_backend_layer_formats),
+				       type,
+				       NULL);
+	if (ret) {
+		dev_err(drm->dev, "Couldn't initialize layer\n");
+		return ERR_PTR(ret);
+	}
+
+	drm_plane_helper_add(&layer->plane,
+			     &sun4i_backend_layer_helper_funcs);
+	layer->drv = drv;
+
+	if (type == DRM_PLANE_TYPE_PRIMARY)
+		drv->primary = &layer->plane;
+
+	return layer;
+}
+
+struct sun4i_layer **sun4i_layers_init(struct drm_device *drm)
+{
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_layer **layers;
+	int i;
+
+	layers = devm_kcalloc(drm->dev, SUN4I_NUM_LAYERS, sizeof(**layers),
+			      GFP_KERNEL);
+	if (!layers)
+		return ERR_PTR(-ENOMEM);
+
+	/*
+	 * The hardware is a bit unusual here.
+	 *
+	 * Even though it supports 4 layers, it does the composition
+	 * in two separate steps.
+	 *
+	 * The first one is assigning a layer to one of its two
+	 * pipes. If more that 1 layer is assigned to the same pipe,
+	 * and if pixels overlaps, the pipe will take the pixel from
+	 * the layer with the highest priority.
+	 *
+	 * The second step is the actual alpha blending, that takes
+	 * the two pipes as input, and uses the eventual alpha
+	 * component to do the transparency between the two.
+	 *
+	 * This two steps scenario makes us unable to guarantee a
+	 * robust alpha blending between the 4 layers in all
+	 * situations. So we just expose two layers, one per pipe. On
+	 * SoCs that support it, sprites could fill the need for more
+	 * layers.
+	 */
+	for (i = 0; i < SUN4I_NUM_LAYERS; i++) {
+		enum drm_plane_type type = (i == 0)
+					 ? DRM_PLANE_TYPE_PRIMARY
+					 : DRM_PLANE_TYPE_OVERLAY;
+		struct sun4i_layer *layer = layers[i];
+
+		layer = sun4i_layer_init_one(drm, type);
+		if (IS_ERR(layer)) {
+			dev_err(drm->dev, "Couldn't initialize %s plane\n",
+				i ? "overlay" : "primary");
+			return ERR_CAST(layer);
+		};
+
+		DRM_DEBUG_DRIVER("Assigning %s plane to pipe %d\n",
+				 i ? "overlay" : "primary", i);
+		regmap_update_bits(drv->backend->regs, SUN4I_BACKEND_ATTCTL_REG0(i),
+				   SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL_MASK,
+				   SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL(i));
+
+		layer->id = i;
+	};
+
+	return layers;
+}
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.h b/drivers/gpu/drm/sun4i/sun4i_layer.h
new file mode 100644
index 000000000..a2f65d7a3
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_LAYER_H_
+#define _SUN4I_LAYER_H_
+
+struct sun4i_layer {
+	struct drm_plane	plane;
+	struct sun4i_drv	*drv;
+	int			id;
+};
+
+static inline struct sun4i_layer *
+plane_to_sun4i_layer(struct drm_plane *plane)
+{
+	return container_of(plane, struct sun4i_layer, plane);
+}
+
+struct sun4i_layer **sun4i_layers_init(struct drm_device *drm);
+
+#endif /* _SUN4I_LAYER_H_ */
diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c
new file mode 100644
index 000000000..aaffe9e64
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c
@@ -0,0 +1,264 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_panel.h>
+
+#include "sun4i_drv.h"
+#include "sun4i_tcon.h"
+
+struct sun4i_rgb {
+	struct drm_connector	connector;
+	struct drm_encoder	encoder;
+
+	struct sun4i_drv	*drv;
+};
+
+static inline struct sun4i_rgb *
+drm_connector_to_sun4i_rgb(struct drm_connector *connector)
+{
+	return container_of(connector, struct sun4i_rgb,
+			    connector);
+}
+
+static inline struct sun4i_rgb *
+drm_encoder_to_sun4i_rgb(struct drm_encoder *encoder)
+{
+	return container_of(encoder, struct sun4i_rgb,
+			    encoder);
+}
+
+static int sun4i_rgb_get_modes(struct drm_connector *connector)
+{
+	struct sun4i_rgb *rgb =
+		drm_connector_to_sun4i_rgb(connector);
+	struct sun4i_drv *drv = rgb->drv;
+	struct sun4i_tcon *tcon = drv->tcon;
+
+	return drm_panel_get_modes(tcon->panel);
+}
+
+static int sun4i_rgb_mode_valid(struct drm_connector *connector,
+				struct drm_display_mode *mode)
+{
+	struct sun4i_rgb *rgb = drm_connector_to_sun4i_rgb(connector);
+	struct sun4i_drv *drv = rgb->drv;
+	struct sun4i_tcon *tcon = drv->tcon;
+	u32 hsync = mode->hsync_end - mode->hsync_start;
+	u32 vsync = mode->vsync_end - mode->vsync_start;
+	unsigned long rate = mode->clock * 1000;
+	long rounded_rate;
+
+	DRM_DEBUG_DRIVER("Validating modes...\n");
+
+	if (hsync < 1)
+		return MODE_HSYNC_NARROW;
+
+	if (hsync > 0x3ff)
+		return MODE_HSYNC_WIDE;
+
+	if ((mode->hdisplay < 1) || (mode->htotal < 1))
+		return MODE_H_ILLEGAL;
+
+	if ((mode->hdisplay > 0x7ff) || (mode->htotal > 0xfff))
+		return MODE_BAD_HVALUE;
+
+	DRM_DEBUG_DRIVER("Horizontal parameters OK\n");
+
+	if (vsync < 1)
+		return MODE_VSYNC_NARROW;
+
+	if (vsync > 0x3ff)
+		return MODE_VSYNC_WIDE;
+
+	if ((mode->vdisplay < 1) || (mode->vtotal < 1))
+		return MODE_V_ILLEGAL;
+
+	if ((mode->vdisplay > 0x7ff) || (mode->vtotal > 0xfff))
+		return MODE_BAD_VVALUE;
+
+	DRM_DEBUG_DRIVER("Vertical parameters OK\n");
+
+	rounded_rate = clk_round_rate(tcon->dclk, rate);
+	if (rounded_rate < rate)
+		return MODE_CLOCK_LOW;
+
+	if (rounded_rate > rate)
+		return MODE_CLOCK_HIGH;
+
+	DRM_DEBUG_DRIVER("Clock rate OK\n");
+
+	return MODE_OK;
+}
+
+static struct drm_encoder *
+sun4i_rgb_best_encoder(struct drm_connector *connector)
+{
+	struct sun4i_rgb *rgb =
+		drm_connector_to_sun4i_rgb(connector);
+
+	return &rgb->encoder;
+}
+
+static struct drm_connector_helper_funcs sun4i_rgb_con_helper_funcs = {
+	.get_modes	= sun4i_rgb_get_modes,
+	.mode_valid	= sun4i_rgb_mode_valid,
+	.best_encoder	= sun4i_rgb_best_encoder,
+};
+
+static enum drm_connector_status
+sun4i_rgb_connector_detect(struct drm_connector *connector, bool force)
+{
+	return connector_status_connected;
+}
+
+static void
+sun4i_rgb_connector_destroy(struct drm_connector *connector)
+{
+	struct sun4i_rgb *rgb = drm_connector_to_sun4i_rgb(connector);
+	struct sun4i_drv *drv = rgb->drv;
+	struct sun4i_tcon *tcon = drv->tcon;
+
+	drm_panel_detach(tcon->panel);
+	drm_connector_cleanup(connector);
+}
+
+static struct drm_connector_funcs sun4i_rgb_con_funcs = {
+	.dpms			= drm_atomic_helper_connector_dpms,
+	.detect			= sun4i_rgb_connector_detect,
+	.fill_modes		= drm_helper_probe_single_connector_modes,
+	.destroy		= sun4i_rgb_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 int sun4i_rgb_atomic_check(struct drm_encoder *encoder,
+				  struct drm_crtc_state *crtc_state,
+				  struct drm_connector_state *conn_state)
+{
+	return 0;
+}
+
+static void sun4i_rgb_encoder_enable(struct drm_encoder *encoder)
+{
+	struct sun4i_rgb *rgb = drm_encoder_to_sun4i_rgb(encoder);
+	struct sun4i_drv *drv = rgb->drv;
+	struct sun4i_tcon *tcon = drv->tcon;
+
+	DRM_DEBUG_DRIVER("Enabling RGB output\n");
+
+	drm_panel_enable(tcon->panel);
+	sun4i_tcon_channel_enable(tcon, 0);
+}
+
+static void sun4i_rgb_encoder_disable(struct drm_encoder *encoder)
+{
+	struct sun4i_rgb *rgb = drm_encoder_to_sun4i_rgb(encoder);
+	struct sun4i_drv *drv = rgb->drv;
+	struct sun4i_tcon *tcon = drv->tcon;
+
+	DRM_DEBUG_DRIVER("Disabling RGB output\n");
+
+	sun4i_tcon_channel_disable(tcon, 0);
+	drm_panel_disable(tcon->panel);
+}
+
+static void sun4i_rgb_encoder_mode_set(struct drm_encoder *encoder,
+				       struct drm_display_mode *mode,
+				       struct drm_display_mode *adjusted_mode)
+{
+	struct sun4i_rgb *rgb = drm_encoder_to_sun4i_rgb(encoder);
+	struct sun4i_drv *drv = rgb->drv;
+	struct sun4i_tcon *tcon = drv->tcon;
+
+	sun4i_tcon0_mode_set(tcon, mode);
+
+	clk_set_rate(tcon->dclk, mode->crtc_clock * 1000);
+
+	/* FIXME: This seems to be board specific */
+	clk_set_phase(tcon->dclk, 120);
+}
+
+static struct drm_encoder_helper_funcs sun4i_rgb_enc_helper_funcs = {
+	.atomic_check	= sun4i_rgb_atomic_check,
+	.mode_set	= sun4i_rgb_encoder_mode_set,
+	.disable	= sun4i_rgb_encoder_disable,
+	.enable		= sun4i_rgb_encoder_enable,
+};
+
+static void sun4i_rgb_enc_destroy(struct drm_encoder *encoder)
+{
+	drm_encoder_cleanup(encoder);
+}
+
+static struct drm_encoder_funcs sun4i_rgb_enc_funcs = {
+	.destroy	= sun4i_rgb_enc_destroy,
+};
+
+int sun4i_rgb_init(struct drm_device *drm)
+{
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_tcon *tcon = drv->tcon;
+	struct sun4i_rgb *rgb;
+	int ret;
+
+	/* If we don't have a panel, there's no point in going on */
+	if (IS_ERR(tcon->panel))
+		return -ENODEV;
+
+	rgb = devm_kzalloc(drm->dev, sizeof(*rgb), GFP_KERNEL);
+	if (!rgb)
+		return -ENOMEM;
+	rgb->drv = drv;
+
+	drm_encoder_helper_add(&rgb->encoder,
+			       &sun4i_rgb_enc_helper_funcs);
+	ret = drm_encoder_init(drm,
+			       &rgb->encoder,
+			       &sun4i_rgb_enc_funcs,
+			       DRM_MODE_ENCODER_NONE,
+			       NULL);
+	if (ret) {
+		dev_err(drm->dev, "Couldn't initialise the rgb encoder\n");
+		goto err_out;
+	}
+
+	/* The RGB encoder can only work with the TCON channel 0 */
+	rgb->encoder.possible_crtcs = BIT(0);
+
+	drm_connector_helper_add(&rgb->connector,
+				 &sun4i_rgb_con_helper_funcs);
+	ret = drm_connector_init(drm, &rgb->connector,
+				 &sun4i_rgb_con_funcs,
+				 DRM_MODE_CONNECTOR_Unknown);
+	if (ret) {
+		dev_err(drm->dev, "Couldn't initialise the rgb connector\n");
+		goto err_cleanup_connector;
+	}
+
+	drm_mode_connector_attach_encoder(&rgb->connector, &rgb->encoder);
+
+	drm_panel_attach(tcon->panel, &rgb->connector);
+
+	return 0;
+
+err_cleanup_connector:
+	drm_encoder_cleanup(&rgb->encoder);
+err_out:
+	return ret;
+}
+EXPORT_SYMBOL(sun4i_rgb_init);
diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.h b/drivers/gpu/drm/sun4i/sun4i_rgb.h
new file mode 100644
index 000000000..7c4da4c8a
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_rgb.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_RGB_H_
+#define _SUN4I_RGB_H_
+
+int sun4i_rgb_init(struct drm_device *drm);
+
+#endif /* _SUN4I_RGB_H_ */
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
new file mode 100644
index 000000000..652385f09
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -0,0 +1,566 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#include <linux/component.h>
+#include <linux/ioport.h>
+#include <linux/of_address.h>
+#include <linux/of_graph.h>
+#include <linux/of_irq.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#include "sun4i_crtc.h"
+#include "sun4i_dotclock.h"
+#include "sun4i_drv.h"
+#include "sun4i_rgb.h"
+#include "sun4i_tcon.h"
+
+void sun4i_tcon_disable(struct sun4i_tcon *tcon)
+{
+	DRM_DEBUG_DRIVER("Disabling TCON\n");
+
+	/* Disable the TCON */
+	regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
+			   SUN4I_TCON_GCTL_TCON_ENABLE, 0);
+}
+EXPORT_SYMBOL(sun4i_tcon_disable);
+
+void sun4i_tcon_enable(struct sun4i_tcon *tcon)
+{
+	DRM_DEBUG_DRIVER("Enabling TCON\n");
+
+	/* Enable the TCON */
+	regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
+			   SUN4I_TCON_GCTL_TCON_ENABLE,
+			   SUN4I_TCON_GCTL_TCON_ENABLE);
+}
+EXPORT_SYMBOL(sun4i_tcon_enable);
+
+void sun4i_tcon_channel_disable(struct sun4i_tcon *tcon, int channel)
+{
+	/* Disable the TCON's channel */
+	if (channel == 0) {
+		regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
+				   SUN4I_TCON0_CTL_TCON_ENABLE, 0);
+		clk_disable_unprepare(tcon->dclk);
+	} else if (channel == 1) {
+		regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
+				   SUN4I_TCON1_CTL_TCON_ENABLE, 0);
+		clk_disable_unprepare(tcon->sclk1);
+	}
+}
+EXPORT_SYMBOL(sun4i_tcon_channel_disable);
+
+void sun4i_tcon_channel_enable(struct sun4i_tcon *tcon, int channel)
+{
+	/* Enable the TCON's channel */
+	if (channel == 0) {
+		regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
+				   SUN4I_TCON0_CTL_TCON_ENABLE,
+				   SUN4I_TCON0_CTL_TCON_ENABLE);
+		clk_prepare_enable(tcon->dclk);
+	} else if (channel == 1) {
+		regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
+				   SUN4I_TCON1_CTL_TCON_ENABLE,
+				   SUN4I_TCON1_CTL_TCON_ENABLE);
+		clk_prepare_enable(tcon->sclk1);
+	}
+}
+EXPORT_SYMBOL(sun4i_tcon_channel_enable);
+
+void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable)
+{
+	u32 mask, val = 0;
+
+	DRM_DEBUG_DRIVER("%sabling VBLANK interrupt\n", enable ? "En" : "Dis");
+
+	mask = SUN4I_TCON_GINT0_VBLANK_ENABLE(0) |
+	       SUN4I_TCON_GINT0_VBLANK_ENABLE(1);
+
+	if (enable)
+		val = mask;
+
+	regmap_update_bits(tcon->regs, SUN4I_TCON_GINT0_REG, mask, val);
+}
+EXPORT_SYMBOL(sun4i_tcon_enable_vblank);
+
+static int sun4i_tcon_get_clk_delay(struct drm_display_mode *mode,
+				    int channel)
+{
+	int delay = mode->vtotal - mode->vdisplay;
+
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+		delay /= 2;
+
+	if (channel == 1)
+		delay -= 2;
+
+	delay = min(delay, 30);
+
+	DRM_DEBUG_DRIVER("TCON %d clock delay %u\n", channel, delay);
+
+	return delay;
+}
+
+void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
+			  struct drm_display_mode *mode)
+{
+	unsigned int bp, hsync, vsync;
+	u8 clk_delay;
+	u32 val = 0;
+
+	/* Adjust clock delay */
+	clk_delay = sun4i_tcon_get_clk_delay(mode, 0);
+	regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
+			   SUN4I_TCON0_CTL_CLK_DELAY_MASK,
+			   SUN4I_TCON0_CTL_CLK_DELAY(clk_delay));
+
+	/* Set the resolution */
+	regmap_write(tcon->regs, SUN4I_TCON0_BASIC0_REG,
+		     SUN4I_TCON0_BASIC0_X(mode->crtc_hdisplay) |
+		     SUN4I_TCON0_BASIC0_Y(mode->crtc_vdisplay));
+
+	/*
+	 * This is called a backporch in the register documentation,
+	 * but it really is the front porch + hsync
+	 */
+	bp = mode->crtc_htotal - mode->crtc_hsync_start;
+	DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
+			 mode->crtc_htotal, bp);
+
+	/* Set horizontal display timings */
+	regmap_write(tcon->regs, SUN4I_TCON0_BASIC1_REG,
+		     SUN4I_TCON0_BASIC1_H_TOTAL(mode->crtc_htotal) |
+		     SUN4I_TCON0_BASIC1_H_BACKPORCH(bp));
+
+	/*
+	 * This is called a backporch in the register documentation,
+	 * but it really is the front porch + hsync
+	 */
+	bp = mode->crtc_vtotal - mode->crtc_vsync_start;
+	DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
+			 mode->crtc_vtotal, bp);
+
+	/* Set vertical display timings */
+	regmap_write(tcon->regs, SUN4I_TCON0_BASIC2_REG,
+		     SUN4I_TCON0_BASIC2_V_TOTAL(mode->crtc_vtotal) |
+		     SUN4I_TCON0_BASIC2_V_BACKPORCH(bp));
+
+	/* Set Hsync and Vsync length */
+	hsync = mode->crtc_hsync_end - mode->crtc_hsync_start;
+	vsync = mode->crtc_vsync_end - mode->crtc_vsync_start;
+	DRM_DEBUG_DRIVER("Setting HSYNC %d, VSYNC %d\n", hsync, vsync);
+	regmap_write(tcon->regs, SUN4I_TCON0_BASIC3_REG,
+		     SUN4I_TCON0_BASIC3_V_SYNC(vsync) |
+		     SUN4I_TCON0_BASIC3_H_SYNC(hsync));
+
+	/* Setup the polarity of the various signals */
+	if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
+		val |= SUN4I_TCON0_IO_POL_HSYNC_POSITIVE;
+
+	if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
+		val |= SUN4I_TCON0_IO_POL_VSYNC_POSITIVE;
+
+	regmap_update_bits(tcon->regs, SUN4I_TCON0_IO_POL_REG,
+			   SUN4I_TCON0_IO_POL_HSYNC_POSITIVE | SUN4I_TCON0_IO_POL_VSYNC_POSITIVE,
+			   val);
+
+	/* Map output pins to channel 0 */
+	regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
+			   SUN4I_TCON_GCTL_IOMAP_MASK,
+			   SUN4I_TCON_GCTL_IOMAP_TCON0);
+
+	/* Enable the output on the pins */
+	regmap_write(tcon->regs, SUN4I_TCON0_IO_TRI_REG, 0);
+}
+EXPORT_SYMBOL(sun4i_tcon0_mode_set);
+
+void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
+			  struct drm_display_mode *mode)
+{
+	unsigned int bp, hsync, vsync;
+	u8 clk_delay;
+	u32 val;
+
+	/* Adjust clock delay */
+	clk_delay = sun4i_tcon_get_clk_delay(mode, 1);
+	regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
+			   SUN4I_TCON1_CTL_CLK_DELAY_MASK,
+			   SUN4I_TCON1_CTL_CLK_DELAY(clk_delay));
+
+	/* Set interlaced mode */
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+		val = SUN4I_TCON1_CTL_INTERLACE_ENABLE;
+	else
+		val = 0;
+	regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
+			   SUN4I_TCON1_CTL_INTERLACE_ENABLE,
+			   val);
+
+	/* Set the input resolution */
+	regmap_write(tcon->regs, SUN4I_TCON1_BASIC0_REG,
+		     SUN4I_TCON1_BASIC0_X(mode->crtc_hdisplay) |
+		     SUN4I_TCON1_BASIC0_Y(mode->crtc_vdisplay));
+
+	/* Set the upscaling resolution */
+	regmap_write(tcon->regs, SUN4I_TCON1_BASIC1_REG,
+		     SUN4I_TCON1_BASIC1_X(mode->crtc_hdisplay) |
+		     SUN4I_TCON1_BASIC1_Y(mode->crtc_vdisplay));
+
+	/* Set the output resolution */
+	regmap_write(tcon->regs, SUN4I_TCON1_BASIC2_REG,
+		     SUN4I_TCON1_BASIC2_X(mode->crtc_hdisplay) |
+		     SUN4I_TCON1_BASIC2_Y(mode->crtc_vdisplay));
+
+	/* Set horizontal display timings */
+	bp = mode->crtc_htotal - mode->crtc_hsync_end;
+	DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
+			 mode->htotal, bp);
+	regmap_write(tcon->regs, SUN4I_TCON1_BASIC3_REG,
+		     SUN4I_TCON1_BASIC3_H_TOTAL(mode->crtc_htotal) |
+		     SUN4I_TCON1_BASIC3_H_BACKPORCH(bp));
+
+	/* Set vertical display timings */
+	bp = mode->crtc_vtotal - mode->crtc_vsync_end;
+	DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
+			 mode->vtotal, bp);
+	regmap_write(tcon->regs, SUN4I_TCON1_BASIC4_REG,
+		     SUN4I_TCON1_BASIC4_V_TOTAL(mode->vtotal) |
+		     SUN4I_TCON1_BASIC4_V_BACKPORCH(bp));
+
+	/* Set Hsync and Vsync length */
+	hsync = mode->crtc_hsync_end - mode->crtc_hsync_start;
+	vsync = mode->crtc_vsync_end - mode->crtc_vsync_start;
+	DRM_DEBUG_DRIVER("Setting HSYNC %d, VSYNC %d\n", hsync, vsync);
+	regmap_write(tcon->regs, SUN4I_TCON1_BASIC5_REG,
+		     SUN4I_TCON1_BASIC5_V_SYNC(vsync) |
+		     SUN4I_TCON1_BASIC5_H_SYNC(hsync));
+
+	/* Map output pins to channel 1 */
+	regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
+			   SUN4I_TCON_GCTL_IOMAP_MASK,
+			   SUN4I_TCON_GCTL_IOMAP_TCON1);
+
+	/*
+	 * FIXME: Undocumented bits
+	 */
+	if (tcon->has_mux)
+		regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, 1);
+}
+EXPORT_SYMBOL(sun4i_tcon1_mode_set);
+
+static void sun4i_tcon_finish_page_flip(struct drm_device *dev,
+					struct sun4i_crtc *scrtc)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->event_lock, flags);
+	if (scrtc->event) {
+		drm_crtc_send_vblank_event(&scrtc->crtc, scrtc->event);
+		drm_crtc_vblank_put(&scrtc->crtc);
+		scrtc->event = NULL;
+	}
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+}
+
+static irqreturn_t sun4i_tcon_handler(int irq, void *private)
+{
+	struct sun4i_tcon *tcon = private;
+	struct drm_device *drm = tcon->drm;
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_crtc *scrtc = drv->crtc;
+	unsigned int status;
+
+	regmap_read(tcon->regs, SUN4I_TCON_GINT0_REG, &status);
+
+	if (!(status & (SUN4I_TCON_GINT0_VBLANK_INT(0) |
+			SUN4I_TCON_GINT0_VBLANK_INT(1))))
+		return IRQ_NONE;
+
+	drm_crtc_handle_vblank(&scrtc->crtc);
+	sun4i_tcon_finish_page_flip(drm, scrtc);
+
+	/* Acknowledge the interrupt */
+	regmap_update_bits(tcon->regs, SUN4I_TCON_GINT0_REG,
+			   SUN4I_TCON_GINT0_VBLANK_INT(0) |
+			   SUN4I_TCON_GINT0_VBLANK_INT(1),
+			   0);
+
+	return IRQ_HANDLED;
+}
+
+static int sun4i_tcon_init_clocks(struct device *dev,
+				  struct sun4i_tcon *tcon)
+{
+	tcon->clk = devm_clk_get(dev, "ahb");
+	if (IS_ERR(tcon->clk)) {
+		dev_err(dev, "Couldn't get the TCON bus clock\n");
+		return PTR_ERR(tcon->clk);
+	}
+	clk_prepare_enable(tcon->clk);
+
+	tcon->sclk0 = devm_clk_get(dev, "tcon-ch0");
+	if (IS_ERR(tcon->sclk0)) {
+		dev_err(dev, "Couldn't get the TCON channel 0 clock\n");
+		return PTR_ERR(tcon->sclk0);
+	}
+
+	tcon->sclk1 = devm_clk_get(dev, "tcon-ch1");
+	if (IS_ERR(tcon->sclk1)) {
+		dev_err(dev, "Couldn't get the TCON channel 1 clock\n");
+		return PTR_ERR(tcon->sclk1);
+	}
+
+	return sun4i_dclk_create(dev, tcon);
+}
+
+static void sun4i_tcon_free_clocks(struct sun4i_tcon *tcon)
+{
+	sun4i_dclk_free(tcon);
+	clk_disable_unprepare(tcon->clk);
+}
+
+static int sun4i_tcon_init_irq(struct device *dev,
+			       struct sun4i_tcon *tcon)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	int irq, ret;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		dev_err(dev, "Couldn't retrieve the TCON interrupt\n");
+		return irq;
+	}
+
+	ret = devm_request_irq(dev, irq, sun4i_tcon_handler, 0,
+			       dev_name(dev), tcon);
+	if (ret) {
+		dev_err(dev, "Couldn't request the IRQ\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct regmap_config sun4i_tcon_regmap_config = {
+	.reg_bits	= 32,
+	.val_bits	= 32,
+	.reg_stride	= 4,
+	.max_register	= 0x800,
+};
+
+static int sun4i_tcon_init_regmap(struct device *dev,
+				  struct sun4i_tcon *tcon)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct resource *res;
+	void __iomem *regs;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(regs)) {
+		dev_err(dev, "Couldn't map the TCON registers\n");
+		return PTR_ERR(regs);
+	}
+
+	tcon->regs = devm_regmap_init_mmio(dev, regs,
+					   &sun4i_tcon_regmap_config);
+	if (IS_ERR(tcon->regs)) {
+		dev_err(dev, "Couldn't create the TCON regmap\n");
+		return PTR_ERR(tcon->regs);
+	}
+
+	/* Make sure the TCON is disabled and all IRQs are off */
+	regmap_write(tcon->regs, SUN4I_TCON_GCTL_REG, 0);
+	regmap_write(tcon->regs, SUN4I_TCON_GINT0_REG, 0);
+	regmap_write(tcon->regs, SUN4I_TCON_GINT1_REG, 0);
+
+	/* Disable IO lines and set them to tristate */
+	regmap_write(tcon->regs, SUN4I_TCON0_IO_TRI_REG, ~0);
+	regmap_write(tcon->regs, SUN4I_TCON1_IO_TRI_REG, ~0);
+
+	return 0;
+}
+
+static struct drm_panel *sun4i_tcon_find_panel(struct device_node *node)
+{
+	struct device_node *port, *remote, *child;
+	struct device_node *end_node = NULL;
+
+	/* Inputs are listed first, then outputs */
+	port = of_graph_get_port_by_id(node, 1);
+
+	/*
+	 * Our first output is the RGB interface where the panel will
+	 * be connected.
+	 */
+	for_each_child_of_node(port, child) {
+		u32 reg;
+
+		of_property_read_u32(child, "reg", &reg);
+		if (reg == 0)
+			end_node = child;
+	}
+
+	if (!end_node) {
+		DRM_DEBUG_DRIVER("Missing panel endpoint\n");
+		return ERR_PTR(-ENODEV);
+	}
+
+	remote = of_graph_get_remote_port_parent(end_node);
+	if (!remote) {
+		DRM_DEBUG_DRIVER("Unable to parse remote node\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	return of_drm_find_panel(remote) ?: ERR_PTR(-EPROBE_DEFER);
+}
+
+static int sun4i_tcon_bind(struct device *dev, struct device *master,
+			   void *data)
+{
+	struct drm_device *drm = data;
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_tcon *tcon;
+	int ret;
+
+	tcon = devm_kzalloc(dev, sizeof(*tcon), GFP_KERNEL);
+	if (!tcon)
+		return -ENOMEM;
+	dev_set_drvdata(dev, tcon);
+	drv->tcon = tcon;
+	tcon->drm = drm;
+
+	if (of_device_is_compatible(dev->of_node, "allwinner,sun5i-a13-tcon"))
+		tcon->has_mux = true;
+
+	tcon->lcd_rst = devm_reset_control_get(dev, "lcd");
+	if (IS_ERR(tcon->lcd_rst)) {
+		dev_err(dev, "Couldn't get our reset line\n");
+		return PTR_ERR(tcon->lcd_rst);
+	}
+
+	/* Make sure our TCON is reset */
+	if (!reset_control_status(tcon->lcd_rst))
+		reset_control_assert(tcon->lcd_rst);
+
+	ret = reset_control_deassert(tcon->lcd_rst);
+	if (ret) {
+		dev_err(dev, "Couldn't deassert our reset line\n");
+		return ret;
+	}
+
+	ret = sun4i_tcon_init_regmap(dev, tcon);
+	if (ret) {
+		dev_err(dev, "Couldn't init our TCON regmap\n");
+		goto err_assert_reset;
+	}
+
+	ret = sun4i_tcon_init_clocks(dev, tcon);
+	if (ret) {
+		dev_err(dev, "Couldn't init our TCON clocks\n");
+		goto err_assert_reset;
+	}
+
+	ret = sun4i_tcon_init_irq(dev, tcon);
+	if (ret) {
+		dev_err(dev, "Couldn't init our TCON interrupts\n");
+		goto err_free_clocks;
+	}
+
+	tcon->panel = sun4i_tcon_find_panel(dev->of_node);
+	if (IS_ERR(tcon->panel)) {
+		dev_info(dev, "No panel found... RGB output disabled\n");
+		return 0;
+	}
+
+	ret = sun4i_rgb_init(drm);
+	if (ret < 0)
+		goto err_free_clocks;
+
+	return 0;
+
+err_free_clocks:
+	sun4i_tcon_free_clocks(tcon);
+err_assert_reset:
+	reset_control_assert(tcon->lcd_rst);
+	return ret;
+}
+
+static void sun4i_tcon_unbind(struct device *dev, struct device *master,
+			      void *data)
+{
+	struct sun4i_tcon *tcon = dev_get_drvdata(dev);
+
+	sun4i_tcon_free_clocks(tcon);
+}
+
+static struct component_ops sun4i_tcon_ops = {
+	.bind	= sun4i_tcon_bind,
+	.unbind	= sun4i_tcon_unbind,
+};
+
+static int sun4i_tcon_probe(struct platform_device *pdev)
+{
+	struct device_node *node = pdev->dev.of_node;
+	struct drm_panel *panel;
+
+	/*
+	 * The panel is not ready.
+	 * Defer the probe.
+	 */
+	panel = sun4i_tcon_find_panel(node);
+
+	/*
+	 * If we don't have a panel endpoint, just go on
+	 */
+	if (PTR_ERR(panel) == -EPROBE_DEFER) {
+		DRM_DEBUG_DRIVER("Still waiting for our panel. Deferring...\n");
+		return -EPROBE_DEFER;
+	}
+
+	return component_add(&pdev->dev, &sun4i_tcon_ops);
+}
+
+static int sun4i_tcon_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &sun4i_tcon_ops);
+
+	return 0;
+}
+
+static const struct of_device_id sun4i_tcon_of_table[] = {
+	{ .compatible = "allwinner,sun5i-a13-tcon" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sun4i_tcon_of_table);
+
+static struct platform_driver sun4i_tcon_platform_driver = {
+	.probe		= sun4i_tcon_probe,
+	.remove		= sun4i_tcon_remove,
+	.driver		= {
+		.name		= "sun4i-tcon",
+		.of_match_table	= sun4i_tcon_of_table,
+	},
+};
+module_platform_driver(sun4i_tcon_platform_driver);
+
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Allwinner A10 Timing Controller Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h b/drivers/gpu/drm/sun4i/sun4i_tcon.h
new file mode 100644
index 000000000..0e0b11db4
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h
@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Boris Brezillon <boris.brezillon@free-electrons.com>
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef __SUN4I_TCON_H__
+#define __SUN4I_TCON_H__
+
+#include <drm/drm_crtc.h>
+
+#include <linux/kernel.h>
+#include <linux/reset.h>
+
+#define SUN4I_TCON_GCTL_REG			0x0
+#define SUN4I_TCON_GCTL_TCON_ENABLE			BIT(31)
+#define SUN4I_TCON_GCTL_IOMAP_MASK			BIT(0)
+#define SUN4I_TCON_GCTL_IOMAP_TCON1			(1 << 0)
+#define SUN4I_TCON_GCTL_IOMAP_TCON0			(0 << 0)
+
+#define SUN4I_TCON_GINT0_REG			0x4
+#define SUN4I_TCON_GINT0_VBLANK_ENABLE(pipe)		BIT(31 - (pipe))
+#define SUN4I_TCON_GINT0_VBLANK_INT(pipe)		BIT(15 - (pipe))
+
+#define SUN4I_TCON_GINT1_REG			0x8
+#define SUN4I_TCON_FRM_CTL_REG			0x10
+
+#define SUN4I_TCON0_CTL_REG			0x40
+#define SUN4I_TCON0_CTL_TCON_ENABLE			BIT(31)
+#define SUN4I_TCON0_CTL_CLK_DELAY_MASK			GENMASK(8, 4)
+#define SUN4I_TCON0_CTL_CLK_DELAY(delay)		((delay << 4) & SUN4I_TCON0_CTL_CLK_DELAY_MASK)
+
+#define SUN4I_TCON0_DCLK_REG			0x44
+#define SUN4I_TCON0_DCLK_GATE_BIT			(31)
+#define SUN4I_TCON0_DCLK_DIV_SHIFT			(0)
+#define SUN4I_TCON0_DCLK_DIV_WIDTH			(7)
+
+#define SUN4I_TCON0_BASIC0_REG			0x48
+#define SUN4I_TCON0_BASIC0_X(width)			((((width) - 1) & 0xfff) << 16)
+#define SUN4I_TCON0_BASIC0_Y(height)			(((height) - 1) & 0xfff)
+
+#define SUN4I_TCON0_BASIC1_REG			0x4c
+#define SUN4I_TCON0_BASIC1_H_TOTAL(total)		((((total) - 1) & 0x1fff) << 16)
+#define SUN4I_TCON0_BASIC1_H_BACKPORCH(bp)		(((bp) - 1) & 0xfff)
+
+#define SUN4I_TCON0_BASIC2_REG			0x50
+#define SUN4I_TCON0_BASIC2_V_TOTAL(total)		((((total) * 2) & 0x1fff) << 16)
+#define SUN4I_TCON0_BASIC2_V_BACKPORCH(bp)		(((bp) - 1) & 0xfff)
+
+#define SUN4I_TCON0_BASIC3_REG			0x54
+#define SUN4I_TCON0_BASIC3_H_SYNC(width)		((((width) - 1) & 0x7ff) << 16)
+#define SUN4I_TCON0_BASIC3_V_SYNC(height)		(((height) - 1) & 0x7ff)
+
+#define SUN4I_TCON0_HV_IF_REG			0x58
+#define SUN4I_TCON0_CPU_IF_REG			0x60
+#define SUN4I_TCON0_CPU_WR_REG			0x64
+#define SUN4I_TCON0_CPU_RD0_REG			0x68
+#define SUN4I_TCON0_CPU_RDA_REG			0x6c
+#define SUN4I_TCON0_TTL0_REG			0x70
+#define SUN4I_TCON0_TTL1_REG			0x74
+#define SUN4I_TCON0_TTL2_REG			0x78
+#define SUN4I_TCON0_TTL3_REG			0x7c
+#define SUN4I_TCON0_TTL4_REG			0x80
+#define SUN4I_TCON0_LVDS_IF_REG			0x84
+#define SUN4I_TCON0_IO_POL_REG			0x88
+#define SUN4I_TCON0_IO_POL_DCLK_PHASE(phase)		((phase & 3) << 28)
+#define SUN4I_TCON0_IO_POL_HSYNC_POSITIVE		BIT(25)
+#define SUN4I_TCON0_IO_POL_VSYNC_POSITIVE		BIT(24)
+
+#define SUN4I_TCON0_IO_TRI_REG			0x8c
+#define SUN4I_TCON0_IO_TRI_HSYNC_DISABLE		BIT(25)
+#define SUN4I_TCON0_IO_TRI_VSYNC_DISABLE		BIT(24)
+#define SUN4I_TCON0_IO_TRI_DATA_PINS_DISABLE(pins)	GENMASK(pins, 0)
+
+#define SUN4I_TCON1_CTL_REG			0x90
+#define SUN4I_TCON1_CTL_TCON_ENABLE			BIT(31)
+#define SUN4I_TCON1_CTL_INTERLACE_ENABLE		BIT(20)
+#define SUN4I_TCON1_CTL_CLK_DELAY_MASK			GENMASK(8, 4)
+#define SUN4I_TCON1_CTL_CLK_DELAY(delay)		((delay << 4) & SUN4I_TCON1_CTL_CLK_DELAY_MASK)
+
+#define SUN4I_TCON1_BASIC0_REG			0x94
+#define SUN4I_TCON1_BASIC0_X(width)			((((width) - 1) & 0xfff) << 16)
+#define SUN4I_TCON1_BASIC0_Y(height)			(((height) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC1_REG			0x98
+#define SUN4I_TCON1_BASIC1_X(width)			((((width) - 1) & 0xfff) << 16)
+#define SUN4I_TCON1_BASIC1_Y(height)			(((height) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC2_REG			0x9c
+#define SUN4I_TCON1_BASIC2_X(width)			((((width) - 1) & 0xfff) << 16)
+#define SUN4I_TCON1_BASIC2_Y(height)			(((height) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC3_REG			0xa0
+#define SUN4I_TCON1_BASIC3_H_TOTAL(total)		((((total) - 1) & 0x1fff) << 16)
+#define SUN4I_TCON1_BASIC3_H_BACKPORCH(bp)		(((bp) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC4_REG			0xa4
+#define SUN4I_TCON1_BASIC4_V_TOTAL(total)		(((total) & 0x1fff) << 16)
+#define SUN4I_TCON1_BASIC4_V_BACKPORCH(bp)		(((bp) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC5_REG			0xa8
+#define SUN4I_TCON1_BASIC5_H_SYNC(width)		((((width) - 1) & 0x3ff) << 16)
+#define SUN4I_TCON1_BASIC5_V_SYNC(height)		(((height) - 1) & 0x3ff)
+
+#define SUN4I_TCON1_IO_POL_REG			0xf0
+#define SUN4I_TCON1_IO_TRI_REG			0xf4
+#define SUN4I_TCON_CEU_CTL_REG			0x100
+#define SUN4I_TCON_CEU_MUL_RR_REG		0x110
+#define SUN4I_TCON_CEU_MUL_RG_REG		0x114
+#define SUN4I_TCON_CEU_MUL_RB_REG		0x118
+#define SUN4I_TCON_CEU_ADD_RC_REG		0x11c
+#define SUN4I_TCON_CEU_MUL_GR_REG		0x120
+#define SUN4I_TCON_CEU_MUL_GG_REG		0x124
+#define SUN4I_TCON_CEU_MUL_GB_REG		0x128
+#define SUN4I_TCON_CEU_ADD_GC_REG		0x12c
+#define SUN4I_TCON_CEU_MUL_BR_REG		0x130
+#define SUN4I_TCON_CEU_MUL_BG_REG		0x134
+#define SUN4I_TCON_CEU_MUL_BB_REG		0x138
+#define SUN4I_TCON_CEU_ADD_BC_REG		0x13c
+#define SUN4I_TCON_CEU_RANGE_R_REG		0x140
+#define SUN4I_TCON_CEU_RANGE_G_REG		0x144
+#define SUN4I_TCON_CEU_RANGE_B_REG		0x148
+#define SUN4I_TCON_MUX_CTRL_REG			0x200
+#define SUN4I_TCON1_FILL_CTL_REG		0x300
+#define SUN4I_TCON1_FILL_BEG0_REG		0x304
+#define SUN4I_TCON1_FILL_END0_REG		0x308
+#define SUN4I_TCON1_FILL_DATA0_REG		0x30c
+#define SUN4I_TCON1_FILL_BEG1_REG		0x310
+#define SUN4I_TCON1_FILL_END1_REG		0x314
+#define SUN4I_TCON1_FILL_DATA1_REG		0x318
+#define SUN4I_TCON1_FILL_BEG2_REG		0x31c
+#define SUN4I_TCON1_FILL_END2_REG		0x320
+#define SUN4I_TCON1_FILL_DATA2_REG		0x324
+#define SUN4I_TCON1_GAMMA_TABLE_REG		0x400
+
+#define SUN4I_TCON_MAX_CHANNELS		2
+
+struct sun4i_tcon {
+	struct drm_device		*drm;
+	struct regmap			*regs;
+
+	/* Main bus clock */
+	struct clk			*clk;
+
+	/* Clocks for the TCON channels */
+	struct clk			*sclk0;
+	struct clk			*sclk1;
+
+	/* Pixel clock */
+	struct clk			*dclk;
+
+	/* Reset control */
+	struct reset_control		*lcd_rst;
+
+	/* Platform adjustments */
+	bool				has_mux;
+
+	struct drm_panel		*panel;
+};
+
+/* Global Control */
+void sun4i_tcon_disable(struct sun4i_tcon *tcon);
+void sun4i_tcon_enable(struct sun4i_tcon *tcon);
+
+/* Channel Control */
+void sun4i_tcon_channel_disable(struct sun4i_tcon *tcon, int channel);
+void sun4i_tcon_channel_enable(struct sun4i_tcon *tcon, int channel);
+
+void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable);
+
+/* Mode Related Controls */
+void sun4i_tcon_switch_interlace(struct sun4i_tcon *tcon,
+				 bool enable);
+void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
+			  struct drm_display_mode *mode);
+void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
+			  struct drm_display_mode *mode);
+
+#endif /* __SUN4I_TCON_H__ */
diff --git a/drivers/gpu/drm/sun4i/sun4i_tv.c b/drivers/gpu/drm/sun4i/sun4i_tv.c
new file mode 100644
index 000000000..bc047f923
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_tv.c
@@ -0,0 +1,708 @@
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/of_address.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_panel.h>
+
+#include "sun4i_backend.h"
+#include "sun4i_drv.h"
+#include "sun4i_tcon.h"
+
+#define SUN4I_TVE_EN_REG		0x000
+#define SUN4I_TVE_EN_DAC_MAP_MASK		GENMASK(19, 4)
+#define SUN4I_TVE_EN_DAC_MAP(dac, out)		(((out) & 0xf) << (dac + 1) * 4)
+#define SUN4I_TVE_EN_ENABLE			BIT(0)
+
+#define SUN4I_TVE_CFG0_REG		0x004
+#define SUN4I_TVE_CFG0_DAC_CONTROL_54M		BIT(26)
+#define SUN4I_TVE_CFG0_CORE_DATAPATH_54M	BIT(25)
+#define SUN4I_TVE_CFG0_CORE_CONTROL_54M		BIT(24)
+#define SUN4I_TVE_CFG0_YC_EN			BIT(17)
+#define SUN4I_TVE_CFG0_COMP_EN			BIT(16)
+#define SUN4I_TVE_CFG0_RES(x)			((x) & 0xf)
+#define SUN4I_TVE_CFG0_RES_480i			SUN4I_TVE_CFG0_RES(0)
+#define SUN4I_TVE_CFG0_RES_576i			SUN4I_TVE_CFG0_RES(1)
+
+#define SUN4I_TVE_DAC0_REG		0x008
+#define SUN4I_TVE_DAC0_CLOCK_INVERT		BIT(24)
+#define SUN4I_TVE_DAC0_LUMA(x)			(((x) & 3) << 20)
+#define SUN4I_TVE_DAC0_LUMA_0_4			SUN4I_TVE_DAC0_LUMA(3)
+#define SUN4I_TVE_DAC0_CHROMA(x)		(((x) & 3) << 18)
+#define SUN4I_TVE_DAC0_CHROMA_0_75		SUN4I_TVE_DAC0_CHROMA(3)
+#define SUN4I_TVE_DAC0_INTERNAL_DAC(x)		(((x) & 3) << 16)
+#define SUN4I_TVE_DAC0_INTERNAL_DAC_37_5_OHMS	SUN4I_TVE_DAC0_INTERNAL_DAC(3)
+#define SUN4I_TVE_DAC0_DAC_EN(dac)		BIT(dac)
+
+#define SUN4I_TVE_NOTCH_REG		0x00c
+#define SUN4I_TVE_NOTCH_DAC0_TO_DAC_DLY(dac, x)	((4 - (x)) << (dac * 3))
+
+#define SUN4I_TVE_CHROMA_FREQ_REG	0x010
+
+#define SUN4I_TVE_PORCH_REG		0x014
+#define SUN4I_TVE_PORCH_BACK(x)			((x) << 16)
+#define SUN4I_TVE_PORCH_FRONT(x)		(x)
+
+#define SUN4I_TVE_LINE_REG		0x01c
+#define SUN4I_TVE_LINE_FIRST(x)			((x) << 16)
+#define SUN4I_TVE_LINE_NUMBER(x)		(x)
+
+#define SUN4I_TVE_LEVEL_REG		0x020
+#define SUN4I_TVE_LEVEL_BLANK(x)		((x) << 16)
+#define SUN4I_TVE_LEVEL_BLACK(x)		(x)
+
+#define SUN4I_TVE_DAC1_REG		0x024
+#define SUN4I_TVE_DAC1_AMPLITUDE(dac, x)	((x) << (dac * 8))
+
+#define SUN4I_TVE_DETECT_STA_REG	0x038
+#define SUN4I_TVE_DETECT_STA_DAC(dac)		BIT((dac * 8))
+#define SUN4I_TVE_DETECT_STA_UNCONNECTED		0
+#define SUN4I_TVE_DETECT_STA_CONNECTED			1
+#define SUN4I_TVE_DETECT_STA_GROUND			2
+
+#define SUN4I_TVE_CB_CR_LVL_REG		0x10c
+#define SUN4I_TVE_CB_CR_LVL_CR_BURST(x)		((x) << 8)
+#define SUN4I_TVE_CB_CR_LVL_CB_BURST(x)		(x)
+
+#define SUN4I_TVE_TINT_BURST_PHASE_REG	0x110
+#define SUN4I_TVE_TINT_BURST_PHASE_CHROMA(x)	(x)
+
+#define SUN4I_TVE_BURST_WIDTH_REG	0x114
+#define SUN4I_TVE_BURST_WIDTH_BREEZEWAY(x)	((x) << 16)
+#define SUN4I_TVE_BURST_WIDTH_BURST_WIDTH(x)	((x) << 8)
+#define SUN4I_TVE_BURST_WIDTH_HSYNC_WIDTH(x)	(x)
+
+#define SUN4I_TVE_CB_CR_GAIN_REG	0x118
+#define SUN4I_TVE_CB_CR_GAIN_CR(x)		((x) << 8)
+#define SUN4I_TVE_CB_CR_GAIN_CB(x)		(x)
+
+#define SUN4I_TVE_SYNC_VBI_REG		0x11c
+#define SUN4I_TVE_SYNC_VBI_SYNC(x)		((x) << 16)
+#define SUN4I_TVE_SYNC_VBI_VBLANK(x)		(x)
+
+#define SUN4I_TVE_ACTIVE_LINE_REG	0x124
+#define SUN4I_TVE_ACTIVE_LINE(x)		(x)
+
+#define SUN4I_TVE_CHROMA_REG		0x128
+#define SUN4I_TVE_CHROMA_COMP_GAIN(x)		((x) & 3)
+#define SUN4I_TVE_CHROMA_COMP_GAIN_50		SUN4I_TVE_CHROMA_COMP_GAIN(2)
+
+#define SUN4I_TVE_12C_REG		0x12c
+#define SUN4I_TVE_12C_NOTCH_WIDTH_WIDE		BIT(8)
+#define SUN4I_TVE_12C_COMP_YUV_EN		BIT(0)
+
+#define SUN4I_TVE_RESYNC_REG		0x130
+#define SUN4I_TVE_RESYNC_FIELD			BIT(31)
+#define SUN4I_TVE_RESYNC_LINE(x)		((x) << 16)
+#define SUN4I_TVE_RESYNC_PIXEL(x)		(x)
+
+#define SUN4I_TVE_SLAVE_REG		0x134
+
+#define SUN4I_TVE_WSS_DATA2_REG		0x244
+
+struct color_gains {
+	u16	cb;
+	u16	cr;
+};
+
+struct burst_levels {
+	u16	cb;
+	u16	cr;
+};
+
+struct video_levels {
+	u16	black;
+	u16	blank;
+};
+
+struct resync_parameters {
+	bool	field;
+	u16	line;
+	u16	pixel;
+};
+
+struct tv_mode {
+	char		*name;
+
+	u32		mode;
+	u32		chroma_freq;
+	u16		back_porch;
+	u16		front_porch;
+	u16		line_number;
+	u16		vblank_level;
+
+	u32		hdisplay;
+	u16		hfront_porch;
+	u16		hsync_len;
+	u16		hback_porch;
+
+	u32		vdisplay;
+	u16		vfront_porch;
+	u16		vsync_len;
+	u16		vback_porch;
+
+	bool		yc_en;
+	bool		dac3_en;
+	bool		dac_bit25_en;
+
+	struct color_gains		*color_gains;
+	struct burst_levels		*burst_levels;
+	struct video_levels		*video_levels;
+	struct resync_parameters	*resync_params;
+};
+
+struct sun4i_tv {
+	struct drm_connector	connector;
+	struct drm_encoder	encoder;
+
+	struct clk		*clk;
+	struct regmap		*regs;
+	struct reset_control	*reset;
+
+	struct sun4i_drv	*drv;
+};
+
+struct video_levels ntsc_video_levels = {
+	.black = 282,	.blank = 240,
+};
+
+struct video_levels pal_video_levels = {
+	.black = 252,	.blank = 252,
+};
+
+struct burst_levels ntsc_burst_levels = {
+	.cb = 79,	.cr = 0,
+};
+
+struct burst_levels pal_burst_levels = {
+	.cb = 40,	.cr = 40,
+};
+
+struct color_gains ntsc_color_gains = {
+	.cb = 160,	.cr = 160,
+};
+
+struct color_gains pal_color_gains = {
+	.cb = 224,	.cr = 224,
+};
+
+struct resync_parameters ntsc_resync_parameters = {
+	.field = false,	.line = 14,	.pixel = 12,
+};
+
+struct resync_parameters pal_resync_parameters = {
+	.field = true,	.line = 13,	.pixel = 12,
+};
+
+struct tv_mode tv_modes[] = {
+	{
+		.name		= "NTSC",
+		.mode		= SUN4I_TVE_CFG0_RES_480i,
+		.chroma_freq	= 0x21f07c1f,
+		.yc_en		= true,
+		.dac3_en	= true,
+		.dac_bit25_en	= true,
+
+		.back_porch	= 118,
+		.front_porch	= 32,
+		.line_number	= 525,
+
+		.hdisplay	= 720,
+		.hfront_porch	= 18,
+		.hsync_len	= 2,
+		.hback_porch	= 118,
+
+		.vdisplay	= 480,
+		.vfront_porch	= 26,
+		.vsync_len	= 2,
+		.vback_porch	= 17,
+
+		.vblank_level	= 240,
+
+		.color_gains	= &ntsc_color_gains,
+		.burst_levels	= &ntsc_burst_levels,
+		.video_levels	= &ntsc_video_levels,
+		.resync_params	= &ntsc_resync_parameters,
+	},
+	{
+		.name		= "PAL",
+		.mode		= SUN4I_TVE_CFG0_RES_576i,
+		.chroma_freq	= 0x2a098acb,
+
+		.back_porch	= 138,
+		.front_porch	= 24,
+		.line_number	= 625,
+
+		.hdisplay	= 720,
+		.hfront_porch	= 3,
+		.hsync_len	= 2,
+		.hback_porch	= 139,
+
+		.vdisplay	= 576,
+		.vfront_porch	= 28,
+		.vsync_len	= 2,
+		.vback_porch	= 19,
+
+		.vblank_level	= 252,
+
+		.color_gains	= &pal_color_gains,
+		.burst_levels	= &pal_burst_levels,
+		.video_levels	= &pal_video_levels,
+		.resync_params	= &pal_resync_parameters,
+	},
+};
+
+static inline struct sun4i_tv *
+drm_encoder_to_sun4i_tv(struct drm_encoder *encoder)
+{
+	return container_of(encoder, struct sun4i_tv,
+			    encoder);
+}
+
+static inline struct sun4i_tv *
+drm_connector_to_sun4i_tv(struct drm_connector *connector)
+{
+	return container_of(connector, struct sun4i_tv,
+			    connector);
+}
+
+/*
+ * FIXME: If only the drm_display_mode private field was usable, this
+ * could go away...
+ *
+ * So far, it doesn't seem to be preserved when the mode is passed by
+ * to mode_set for some reason.
+ */
+static struct tv_mode *sun4i_tv_find_tv_by_mode(struct drm_display_mode *mode)
+{
+	int i;
+
+	/* First try to identify the mode by name */
+	for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
+		struct tv_mode *tv_mode = &tv_modes[i];
+
+		DRM_DEBUG_DRIVER("Comparing mode %s vs %s",
+				 mode->name, tv_mode->name);
+
+		if (!strcmp(mode->name, tv_mode->name))
+			return tv_mode;
+	}
+
+	/* Then by number of lines */
+	for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
+		struct tv_mode *tv_mode = &tv_modes[i];
+
+		DRM_DEBUG_DRIVER("Comparing mode %s vs %s (X: %d vs %d)",
+				 mode->name, tv_mode->name,
+				 mode->vdisplay, tv_mode->vdisplay);
+
+		if (mode->vdisplay == tv_mode->vdisplay)
+			return tv_mode;
+	}
+
+	return NULL;
+}
+
+static void sun4i_tv_mode_to_drm_mode(struct tv_mode *tv_mode,
+				      struct drm_display_mode *mode)
+{
+	DRM_DEBUG_DRIVER("Creating mode %s\n", mode->name);
+
+	mode->type = DRM_MODE_TYPE_DRIVER;
+	mode->clock = 13500;
+	mode->flags = DRM_MODE_FLAG_INTERLACE;
+
+	mode->hdisplay = tv_mode->hdisplay;
+	mode->hsync_start = mode->hdisplay + tv_mode->hfront_porch;
+	mode->hsync_end = mode->hsync_start + tv_mode->hsync_len;
+	mode->htotal = mode->hsync_end  + tv_mode->hback_porch;
+
+	mode->vdisplay = tv_mode->vdisplay;
+	mode->vsync_start = mode->vdisplay + tv_mode->vfront_porch;
+	mode->vsync_end = mode->vsync_start + tv_mode->vsync_len;
+	mode->vtotal = mode->vsync_end  + tv_mode->vback_porch;
+}
+
+static int sun4i_tv_atomic_check(struct drm_encoder *encoder,
+				 struct drm_crtc_state *crtc_state,
+				 struct drm_connector_state *conn_state)
+{
+	return 0;
+}
+
+static void sun4i_tv_disable(struct drm_encoder *encoder)
+{
+	struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
+	struct sun4i_drv *drv = tv->drv;
+	struct sun4i_tcon *tcon = drv->tcon;
+
+	DRM_DEBUG_DRIVER("Disabling the TV Output\n");
+
+	sun4i_tcon_channel_disable(tcon, 1);
+
+	regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
+			   SUN4I_TVE_EN_ENABLE,
+			   0);
+	sun4i_backend_disable_color_correction(drv->backend);
+}
+
+static void sun4i_tv_enable(struct drm_encoder *encoder)
+{
+	struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
+	struct sun4i_drv *drv = tv->drv;
+	struct sun4i_tcon *tcon = drv->tcon;
+
+	DRM_DEBUG_DRIVER("Enabling the TV Output\n");
+
+	sun4i_backend_apply_color_correction(drv->backend);
+
+	regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
+			   SUN4I_TVE_EN_ENABLE,
+			   SUN4I_TVE_EN_ENABLE);
+
+	sun4i_tcon_channel_enable(tcon, 1);
+}
+
+static void sun4i_tv_mode_set(struct drm_encoder *encoder,
+			      struct drm_display_mode *mode,
+			      struct drm_display_mode *adjusted_mode)
+{
+	struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
+	struct sun4i_drv *drv = tv->drv;
+	struct sun4i_tcon *tcon = drv->tcon;
+	struct tv_mode *tv_mode = sun4i_tv_find_tv_by_mode(mode);
+
+	sun4i_tcon1_mode_set(tcon, mode);
+
+	/* Enable and map the DAC to the output */
+	regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
+			   SUN4I_TVE_EN_DAC_MAP_MASK,
+			   SUN4I_TVE_EN_DAC_MAP(0, 1) |
+			   SUN4I_TVE_EN_DAC_MAP(1, 2) |
+			   SUN4I_TVE_EN_DAC_MAP(2, 3) |
+			   SUN4I_TVE_EN_DAC_MAP(3, 4));
+
+	/* Set PAL settings */
+	regmap_write(tv->regs, SUN4I_TVE_CFG0_REG,
+		     tv_mode->mode |
+		     (tv_mode->yc_en ? SUN4I_TVE_CFG0_YC_EN : 0) |
+		     SUN4I_TVE_CFG0_COMP_EN |
+		     SUN4I_TVE_CFG0_DAC_CONTROL_54M |
+		     SUN4I_TVE_CFG0_CORE_DATAPATH_54M |
+		     SUN4I_TVE_CFG0_CORE_CONTROL_54M);
+
+	/* Configure the DAC for a composite output */
+	regmap_write(tv->regs, SUN4I_TVE_DAC0_REG,
+		     SUN4I_TVE_DAC0_DAC_EN(0) |
+		     (tv_mode->dac3_en ? SUN4I_TVE_DAC0_DAC_EN(3) : 0) |
+		     SUN4I_TVE_DAC0_INTERNAL_DAC_37_5_OHMS |
+		     SUN4I_TVE_DAC0_CHROMA_0_75 |
+		     SUN4I_TVE_DAC0_LUMA_0_4 |
+		     SUN4I_TVE_DAC0_CLOCK_INVERT |
+		     (tv_mode->dac_bit25_en ? BIT(25) : 0) |
+		     BIT(30));
+
+	/* Configure the sample delay between DAC0 and the other DAC */
+	regmap_write(tv->regs, SUN4I_TVE_NOTCH_REG,
+		     SUN4I_TVE_NOTCH_DAC0_TO_DAC_DLY(1, 0) |
+		     SUN4I_TVE_NOTCH_DAC0_TO_DAC_DLY(2, 0));
+
+	regmap_write(tv->regs, SUN4I_TVE_CHROMA_FREQ_REG,
+		     tv_mode->chroma_freq);
+
+	/* Set the front and back porch */
+	regmap_write(tv->regs, SUN4I_TVE_PORCH_REG,
+		     SUN4I_TVE_PORCH_BACK(tv_mode->back_porch) |
+		     SUN4I_TVE_PORCH_FRONT(tv_mode->front_porch));
+
+	/* Set the lines setup */
+	regmap_write(tv->regs, SUN4I_TVE_LINE_REG,
+		     SUN4I_TVE_LINE_FIRST(22) |
+		     SUN4I_TVE_LINE_NUMBER(tv_mode->line_number));
+
+	regmap_write(tv->regs, SUN4I_TVE_LEVEL_REG,
+		     SUN4I_TVE_LEVEL_BLANK(tv_mode->video_levels->blank) |
+		     SUN4I_TVE_LEVEL_BLACK(tv_mode->video_levels->black));
+
+	regmap_write(tv->regs, SUN4I_TVE_DAC1_REG,
+		     SUN4I_TVE_DAC1_AMPLITUDE(0, 0x18) |
+		     SUN4I_TVE_DAC1_AMPLITUDE(1, 0x18) |
+		     SUN4I_TVE_DAC1_AMPLITUDE(2, 0x18) |
+		     SUN4I_TVE_DAC1_AMPLITUDE(3, 0x18));
+
+	regmap_write(tv->regs, SUN4I_TVE_CB_CR_LVL_REG,
+		     SUN4I_TVE_CB_CR_LVL_CB_BURST(tv_mode->burst_levels->cb) |
+		     SUN4I_TVE_CB_CR_LVL_CR_BURST(tv_mode->burst_levels->cr));
+
+	/* Set burst width for a composite output */
+	regmap_write(tv->regs, SUN4I_TVE_BURST_WIDTH_REG,
+		     SUN4I_TVE_BURST_WIDTH_HSYNC_WIDTH(126) |
+		     SUN4I_TVE_BURST_WIDTH_BURST_WIDTH(68) |
+		     SUN4I_TVE_BURST_WIDTH_BREEZEWAY(22));
+
+	regmap_write(tv->regs, SUN4I_TVE_CB_CR_GAIN_REG,
+		     SUN4I_TVE_CB_CR_GAIN_CB(tv_mode->color_gains->cb) |
+		     SUN4I_TVE_CB_CR_GAIN_CR(tv_mode->color_gains->cr));
+
+	regmap_write(tv->regs, SUN4I_TVE_SYNC_VBI_REG,
+		     SUN4I_TVE_SYNC_VBI_SYNC(0x10) |
+		     SUN4I_TVE_SYNC_VBI_VBLANK(tv_mode->vblank_level));
+
+	regmap_write(tv->regs, SUN4I_TVE_ACTIVE_LINE_REG,
+		     SUN4I_TVE_ACTIVE_LINE(1440));
+
+	/* Set composite chroma gain to 50 % */
+	regmap_write(tv->regs, SUN4I_TVE_CHROMA_REG,
+		     SUN4I_TVE_CHROMA_COMP_GAIN_50);
+
+	regmap_write(tv->regs, SUN4I_TVE_12C_REG,
+		     SUN4I_TVE_12C_COMP_YUV_EN |
+		     SUN4I_TVE_12C_NOTCH_WIDTH_WIDE);
+
+	regmap_write(tv->regs, SUN4I_TVE_RESYNC_REG,
+		     SUN4I_TVE_RESYNC_PIXEL(tv_mode->resync_params->pixel) |
+		     SUN4I_TVE_RESYNC_LINE(tv_mode->resync_params->line) |
+		     (tv_mode->resync_params->field ?
+		      SUN4I_TVE_RESYNC_FIELD : 0));
+
+	regmap_write(tv->regs, SUN4I_TVE_SLAVE_REG, 0);
+
+	clk_set_rate(tcon->sclk1, mode->crtc_clock * 1000);
+}
+
+static struct drm_encoder_helper_funcs sun4i_tv_helper_funcs = {
+	.atomic_check	= sun4i_tv_atomic_check,
+	.disable	= sun4i_tv_disable,
+	.enable		= sun4i_tv_enable,
+	.mode_set	= sun4i_tv_mode_set,
+};
+
+static void sun4i_tv_destroy(struct drm_encoder *encoder)
+{
+	drm_encoder_cleanup(encoder);
+}
+
+static struct drm_encoder_funcs sun4i_tv_funcs = {
+	.destroy	= sun4i_tv_destroy,
+};
+
+static int sun4i_tv_comp_get_modes(struct drm_connector *connector)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
+		struct drm_display_mode *mode = drm_mode_create(connector->dev);
+		struct tv_mode *tv_mode = &tv_modes[i];
+
+		strcpy(mode->name, tv_mode->name);
+
+		sun4i_tv_mode_to_drm_mode(tv_mode, mode);
+		drm_mode_probed_add(connector, mode);
+	}
+
+	return i;
+}
+
+static int sun4i_tv_comp_mode_valid(struct drm_connector *connector,
+				    struct drm_display_mode *mode)
+{
+	/* TODO */
+	return MODE_OK;
+}
+
+static struct drm_encoder *
+sun4i_tv_comp_best_encoder(struct drm_connector *connector)
+{
+	struct sun4i_tv *tv = drm_connector_to_sun4i_tv(connector);
+
+	return &tv->encoder;
+}
+
+static struct drm_connector_helper_funcs sun4i_tv_comp_connector_helper_funcs = {
+	.get_modes	= sun4i_tv_comp_get_modes,
+	.mode_valid	= sun4i_tv_comp_mode_valid,
+	.best_encoder	= sun4i_tv_comp_best_encoder,
+};
+
+static enum drm_connector_status
+sun4i_tv_comp_connector_detect(struct drm_connector *connector, bool force)
+{
+	return connector_status_connected;
+}
+
+static void
+sun4i_tv_comp_connector_destroy(struct drm_connector *connector)
+{
+	drm_connector_cleanup(connector);
+}
+
+static struct drm_connector_funcs sun4i_tv_comp_connector_funcs = {
+	.dpms			= drm_atomic_helper_connector_dpms,
+	.detect			= sun4i_tv_comp_connector_detect,
+	.fill_modes		= drm_helper_probe_single_connector_modes,
+	.destroy		= sun4i_tv_comp_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 struct regmap_config sun4i_tv_regmap_config = {
+	.reg_bits	= 32,
+	.val_bits	= 32,
+	.reg_stride	= 4,
+	.max_register	= SUN4I_TVE_WSS_DATA2_REG,
+	.name		= "tv-encoder",
+};
+
+static int sun4i_tv_bind(struct device *dev, struct device *master,
+			 void *data)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct drm_device *drm = data;
+	struct sun4i_drv *drv = drm->dev_private;
+	struct sun4i_tv *tv;
+	struct resource *res;
+	void __iomem *regs;
+	int ret;
+
+	tv = devm_kzalloc(dev, sizeof(*tv), GFP_KERNEL);
+	if (!tv)
+		return -ENOMEM;
+	tv->drv = drv;
+	dev_set_drvdata(dev, tv);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(regs)) {
+		dev_err(dev, "Couldn't map the TV encoder registers\n");
+		return PTR_ERR(regs);
+	}
+
+	tv->regs = devm_regmap_init_mmio(dev, regs,
+					 &sun4i_tv_regmap_config);
+	if (IS_ERR(tv->regs)) {
+		dev_err(dev, "Couldn't create the TV encoder regmap\n");
+		return PTR_ERR(tv->regs);
+	}
+
+	tv->reset = devm_reset_control_get(dev, NULL);
+	if (IS_ERR(tv->reset)) {
+		dev_err(dev, "Couldn't get our reset line\n");
+		return PTR_ERR(tv->reset);
+	}
+
+	ret = reset_control_deassert(tv->reset);
+	if (ret) {
+		dev_err(dev, "Couldn't deassert our reset line\n");
+		return ret;
+	}
+
+	tv->clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(tv->clk)) {
+		dev_err(dev, "Couldn't get the TV encoder clock\n");
+		ret = PTR_ERR(tv->clk);
+		goto err_assert_reset;
+	}
+	clk_prepare_enable(tv->clk);
+
+	drm_encoder_helper_add(&tv->encoder,
+			       &sun4i_tv_helper_funcs);
+	ret = drm_encoder_init(drm,
+			       &tv->encoder,
+			       &sun4i_tv_funcs,
+			       DRM_MODE_ENCODER_TVDAC,
+			       NULL);
+	if (ret) {
+		dev_err(dev, "Couldn't initialise the TV encoder\n");
+		goto err_disable_clk;
+	}
+
+	tv->encoder.possible_crtcs = BIT(0);
+
+	drm_connector_helper_add(&tv->connector,
+				 &sun4i_tv_comp_connector_helper_funcs);
+	ret = drm_connector_init(drm, &tv->connector,
+				 &sun4i_tv_comp_connector_funcs,
+				 DRM_MODE_CONNECTOR_Composite);
+	if (ret) {
+		dev_err(dev,
+			"Couldn't initialise the Composite connector\n");
+		goto err_cleanup_connector;
+	}
+	tv->connector.interlace_allowed = true;
+
+	drm_mode_connector_attach_encoder(&tv->connector, &tv->encoder);
+
+	return 0;
+
+err_cleanup_connector:
+	drm_encoder_cleanup(&tv->encoder);
+err_disable_clk:
+	clk_disable_unprepare(tv->clk);
+err_assert_reset:
+	reset_control_assert(tv->reset);
+	return ret;
+}
+
+static void sun4i_tv_unbind(struct device *dev, struct device *master,
+			    void *data)
+{
+	struct sun4i_tv *tv = dev_get_drvdata(dev);
+
+	drm_connector_cleanup(&tv->connector);
+	drm_encoder_cleanup(&tv->encoder);
+	clk_disable_unprepare(tv->clk);
+}
+
+static struct component_ops sun4i_tv_ops = {
+	.bind	= sun4i_tv_bind,
+	.unbind	= sun4i_tv_unbind,
+};
+
+static int sun4i_tv_probe(struct platform_device *pdev)
+{
+	return component_add(&pdev->dev, &sun4i_tv_ops);
+}
+
+static int sun4i_tv_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &sun4i_tv_ops);
+
+	return 0;
+}
+
+static const struct of_device_id sun4i_tv_of_table[] = {
+	{ .compatible = "allwinner,sun4i-a10-tv-encoder" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sun4i_tv_of_table);
+
+static struct platform_driver sun4i_tv_platform_driver = {
+	.probe		= sun4i_tv_probe,
+	.remove		= sun4i_tv_remove,
+	.driver		= {
+		.name		= "sun4i-tve",
+		.of_match_table	= sun4i_tv_of_table,
+	},
+};
+module_platform_driver(sun4i_tv_platform_driver);
+
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Allwinner A10 TV Encoder Driver");
+MODULE_LICENSE("GPL");