ARM: dove: add a kms/drm driver

This patch adds a KMS/DRM video driver for the LCD and display controllers of the Marvell's Dove SoC.

Signed-off-by Jean-Francois Moine <[email protected]>

This patch adds a KMS/DRM video driver for the LCD and display controllers of the Marvell's Dove SoC.

Signed-off-by Jean-Francois Moine <[email protected]>

---
 drivers/gpu/drm/Kconfig          |    2 +
 drivers/gpu/drm/Makefile         |    1 +
 drivers/gpu/drm/dove/Kconfig     |   10 +
 drivers/gpu/drm/dove/Makefile    |    6 +
 drivers/gpu/drm/dove/dove_crtc.c | 1378 ++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/dove/dove_dcon.h |   64 +++
 drivers/gpu/drm/dove/dove_drv.c  |  380 +++++++++++++
 drivers/gpu/drm/dove/dove_drv.h  |   93 ++++
 drivers/gpu/drm/dove/dove_ec.c   |  570 ++++++++++++++++++++
 drivers/gpu/drm/dove/dove_lcd.h  |  519 ++++++++++++++++++
 10 files changed, 3023 insertions(+)

drivers/gpu/drm/Kconfig +2 -0

index b16c50e..c6e4f4f 100644
@@ -220,3 +220,5 @@ source "drivers/gpu/drm/omapdrm/Kconfig"
 source "drivers/gpu/drm/tilcdc/Kconfig"
 
 source "drivers/gpu/drm/qxl/Kconfig"
+
+source "drivers/gpu/drm/dove/Kconfig"

drivers/gpu/drm/Makefile +1 -0

index 1c9f243..6428683 100644
@@ -52,4 +52,5 @@ obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/
 obj-$(CONFIG_DRM_OMAP)	+= omapdrm/
 obj-$(CONFIG_DRM_TILCDC)	+= tilcdc/
 obj-$(CONFIG_DRM_QXL) += qxl/
+obj-$(CONFIG_DRM_DOVE)	+= dove/
 obj-y			+= i2c/

drivers/gpu/drm/dove/Kconfig new file +10 -0

new file mode 100644
index 0000000..465dc4d
@@ -0,0 +1,10 @@
+config DRM_DOVE
+	tristate "DRM Support for Marvell Dove"
+	depends on DRM && ARCH_DOVE
+	depends on OF
+	select DRM_KMS_HELPER
+	select DRM_KMS_CMA_HELPER
+	select DRM_GEM_CMA_HELPER
+	help
+	  Choose this option if you have a Marvell Dove chipset.
+	  If M is selected the module will be called dove-drm.

drivers/gpu/drm/dove/Makefile new file +6 -0

new file mode 100644
index 0000000..3758a19
@@ -0,0 +1,6 @@
+#
+# Makefile for Marvell Dove's DRM device driver
+#
+
+dove-drm-objs := dove_drv.o dove_crtc.o dove_ec.o
+obj-$(CONFIG_DRM_DOVE) += dove-drm.o

drivers/gpu/drm/dove/dove_crtc.c new file +1378 -0

new file mode 100644
index 0000000..9e397e7
@@ -0,0 +1,1378 @@
+/*
+ * Marvell Dove DRM driver - CRTC
+ *
+ * Copyright (C) 2013
+ *   Jean-Francois Moine <[email protected]>
+ *   Sebastian Hesselbarth <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/of_irq.h>
+
+#include "dove_drv.h"
+#include "dove_lcd.h"
+
+#define DOVE_LCD_REG_BASE_MASK	0xfffff
+#define DOVE_LCD0_REG_BASE	0x20000
+#define DOVE_LCD1_REG_BASE	0x10000
+
+#define to_dove_lcd(x) container_of(x, struct dove_lcd, crtc)
+
+static inline void dove_write(struct dove_lcd *dove_lcd, u32 reg, u32 data)
+{
+	writel(data, dove_lcd->mmio + reg);
+}
+static inline u32 dove_read(struct dove_lcd *dove_lcd, u32 reg)
+{
+	return readl(dove_lcd->mmio + reg);
+}
+static inline void dove_set(struct dove_lcd *dove_lcd, u32 reg, u32 mask)
+{
+	dove_write(dove_lcd, reg, dove_read(dove_lcd, reg) | mask);
+}
+static inline void dove_clear(struct dove_lcd *dove_lcd, u32 reg, u32 mask)
+{
+	dove_write(dove_lcd, reg, dove_read(dove_lcd, reg) & ~mask);
+}
+
+/*
+ * vertical blank functions
+ */
+u32 dove_vblank_count(struct drm_device *dev, int crtc)
+{
+	struct dove_lcd *dove_lcd = dove_drm.lcds[crtc];
+
+	return STA_GRA_FRAME_COUNT(dove_read(dove_lcd, SPU_IRQ_ISR));
+}
+
+int dove_enable_vblank(struct drm_device *dev, int crtc)
+{
+	struct dove_lcd *dove_lcd = dove_drm.lcds[crtc];
+
+#ifdef HANDLE_INTERLACE
+	dove_lcd->vblank_enabled = 1;
+#endif
+	dove_set(dove_lcd, SPU_IRQ_ENA, IRQ_GRA_FRAME_DONE);
+	return 0;
+}
+
+void dove_disable_vblank(struct drm_device *dev, int crtc)
+{
+	struct dove_lcd *dove_lcd = dove_drm.lcds[crtc];
+
+#ifdef HANDLE_INTERLACE
+	dove_lcd->vblank_enabled = 0;
+	if (!dove_lcd->v_sync0)
+#endif
+	dove_clear(dove_lcd, SPU_IRQ_ENA, IRQ_GRA_FRAME_DONE);
+}
+
+#ifdef CONFIG_DEBUG_FS
+static int dove_lcd_regs_show(struct seq_file *m,
+			struct dove_lcd *dove_lcd)
+{
+	u32 x, shl, shh, total_v, total_h, active_h, active_v;
+	u32 orig_buff_x, orig_buff_y, zoomed_x, zoomed_y;
+	unsigned i;
+
+	seq_printf(m, "\t\t*** LCD %d ***\n", dove_lcd->num);
+
+	/* Get resolution */
+	x = dove_read(dove_lcd, LCD_SPU_V_H_ACTIVE);
+	active_h = H_LCD(x);
+	active_v = V_LCD(x);
+
+	/* Get total line */
+	x = dove_read(dove_lcd, LCD_SPUT_V_H_TOTAL);
+	total_h = H_LCD(x);
+	total_v = V_LCD(x);
+	seq_printf(m, "----total-------------------------<%4dx%4d>"
+					"-------------------------\n"
+			"----active--------------|", total_h, total_v);
+
+	/* Get H Timings */
+	x = dove_read(dove_lcd, LCD_SPU_H_PORCH);
+	shl = F_LCD(x);
+	shh = B_LCD(x);
+	seq_printf(m, "->front porch(%d)->hsync(%d)->back porch(%d)\n",
+		shl, total_h - shl -shh - active_h, shh);
+
+	seq_printf(m,	"|\t\t\t|\n"
+			"|\t\t\t|\n"
+			"|\t<%4dx%4d>\t|\n"
+			"|\t\t\t|\n"
+			"|\t\t\t|\n"
+			"------------------------|\n", active_h, active_v);
+
+	/* Get V Timings */
+	x = dove_read(dove_lcd, LCD_SPU_V_PORCH);
+	shl = F_LCD(x);
+	shh = B_LCD(x);
+	seq_printf(m, "|\n|front porch(%d)\n|vsync(%d)\n|back porch(%d)\n",
+		shl, total_v - shl - shh - active_v, shh);
+	seq_printf(m, "----------------------------------"
+			"-----------------------------------\n");
+
+	/* Get Line Pitch */
+	x = dove_read(dove_lcd, LCD_CFG_GRA_PITCH);
+	shl = x & 0x0000ffff;
+	seq_printf(m, "gfx line pitch in memory is <%d>\n",
+			shl);
+
+	/* Get scaling info */
+	x = dove_read(dove_lcd, LCD_SPU_GRA_HPXL_VLN);
+	orig_buff_x = H_LCD(x);
+	orig_buff_y = V_LCD(x);
+	x = dove_read(dove_lcd, LCD_SPU_GZM_HPXL_VLN);
+	zoomed_x = H_LCD(x);
+	zoomed_y = V_LCD(x);
+	seq_printf(m, "Scaled from <%dx%d> to <%dx%d>\n",
+			orig_buff_x, orig_buff_y, zoomed_x, zoomed_y);
+
+	seq_printf(m, "======================================\n");
+
+	for (i = 0x0080; i <= 0x01c4; i += 4) {
+		x = dove_read(dove_lcd, i);
+		seq_printf(m, "0x%04x 0x%08x\n", i, x);
+	}
+	return 0;
+}
+
+static int dove_regs_show(struct seq_file *m, void *arg)
+{
+	struct dove_lcd *dove_lcd;
+	unsigned i;
+
+	for (i = 0; i < MAX_DOVE_LCD; i++) {
+		dove_lcd = dove_drm.lcds[i];
+		if (dove_lcd)
+			dove_lcd_regs_show(m, dove_lcd);
+	}
+	return 0;
+}
+
+static struct drm_info_list dove_debugfs_list[] = {
+	{ "lcd", dove_regs_show, 0 },
+	{ "fb",   drm_fb_cma_debugfs_show, 0 },
+};
+
+int dove_debugfs_init(struct drm_minor *minor)
+{
+	struct drm_device *dev = minor->dev;
+	int ret;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	ret = drm_debugfs_create_files(dove_debugfs_list,
+			ARRAY_SIZE(dove_debugfs_list),
+			minor->debugfs_root, minor);
+	if (ret)
+		dev_err(dev->dev, "could not install dove_debugfs_list\n");
+
+	return ret;
+}
+
+void dove_debugfs_cleanup(struct drm_minor *minor)
+{
+	drm_debugfs_remove_files(dove_debugfs_list,
+			ARRAY_SIZE(dove_debugfs_list), minor);
+}
+#endif
+
+static void dove_update_base(struct dove_lcd *dove_lcd)
+{
+	struct drm_crtc *crtc = &dove_lcd->crtc;
+	struct drm_framebuffer *fb = crtc->fb;
+	struct drm_gem_cma_object *gem;
+	unsigned int depth, bpp;
+	dma_addr_t start;
+
+	drm_fb_get_bpp_depth(fb->pixel_format, &depth, &bpp);
+	gem = drm_fb_cma_get_gem_obj(fb, 0);
+	start = gem->paddr + fb->offsets[0] +
+			crtc->y * fb->pitches[0] +
+			crtc->x * bpp / 8;
+
+	dove_write(dove_lcd, LCD_CFG_GRA_START_ADDR0, start);
+#ifdef HANDLE_INTERLACE
+	if (dove_lcd->crtc.mode.mode->flags & DRM_MODE_FLAG_INTERLACE) {
+		dove_write(dove_lcd, LCD_CFG_GRA_START_ADDR1,
+					start + fb->pitches[0]);
+		dove_write(dove_lcd, LCD_CFG_GRA_PITCH, fb->pitches[0] * 2);
+		return;
+	}
+#endif
+	dove_write(dove_lcd, LCD_CFG_GRA_START_ADDR1, start);
+	dove_write(dove_lcd, LCD_CFG_GRA_PITCH, fb->pitches[0]);
+}
+
+static void set_frame_timings(struct dove_lcd *dove_lcd)
+{
+	struct drm_crtc *crtc = &dove_lcd->crtc;
+	const struct drm_display_mode *mode = &crtc->mode;
+	u32 h_active, v_active, h_orig, v_orig, h_zoom, v_zoom;
+	u32 hfp, hbp, vfp, vbp, hs, vs, v_total;
+	u32 x;
+
+	/*
+	 * Calc active size, zoomed size, porch.
+	 */
+	h_active = h_zoom = mode->hdisplay;
+	v_active = v_zoom = mode->vdisplay;
+	hfp = mode->hsync_start - mode->hdisplay;
+	hbp = mode->htotal - mode->hsync_end;
+	vfp = mode->vsync_start - mode->vdisplay;
+	vbp = mode->vtotal - mode->vsync_end;
+	hs = mode->hsync_end - mode->hsync_start;
+	vs = mode->vsync_end - mode->vsync_start;
+
+	/*
+	 * Calc original size.
+	 */
+	h_orig = h_active;
+	v_orig = v_active;
+
+#ifdef HANDLE_INTERLACE
+	/* interlaced workaround */
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
+		v_active /= 2;
+		v_zoom /= 2;
+		v_orig /= 2;
+	}
+#endif
+
+	/* calc total width and height */
+	v_total = v_active + vfp + vs + vbp;
+
+	/* apply setting to registers */
+	dove_write(dove_lcd, LCD_SPU_V_H_ACTIVE, LCD_H_V(h_active, v_active));
+	dove_write(dove_lcd, LCD_SPU_GRA_HPXL_VLN, LCD_H_V(h_orig, v_orig));
+	dove_write(dove_lcd, LCD_SPU_GZM_HPXL_VLN, LCD_H_V(h_zoom, v_zoom));
+	dove_write(dove_lcd, LCD_SPU_H_PORCH, LCD_F_B(hfp, hbp));
+	dove_write(dove_lcd, LCD_SPU_V_PORCH, LCD_F_B(vfp, vbp));
+	dove_write(dove_lcd, LCD_SPUT_V_H_TOTAL,
+					LCD_H_V(mode->htotal, v_total));
+
+	/* configure vsync adjust logic */
+	x = dove_read(dove_lcd, LCD_TV_CONTROL1);
+	x &= ~(VSYNC_L_OFFSET_MASK | VSYNC_H_OFFSET_MASK);
+	x |= VSYNC_OFFSET_EN |			/* VSYNC adjust enable */
+		VSYNC_L_OFFSET(h_active + hfp) |
+		VSYNC_H_OFFSET(h_active + hfp);
+#ifdef HANDLE_INTERLACE
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
+		dove_lcd->v_sync0 = VSYNC_L_OFFSET(h_active + hfp) |
+				VSYNC_H_OFFSET(h_active + hfp);
+		dove_lcd->v_sync1 = VSYNC_L_OFFSET(h_active / 2 + hfp) |
+				VSYNC_H_OFFSET(h_active / 2 + hfp);
+	} else {
+		dove_lcd->v_sync0 = 0;
+	}
+#endif
+	dove_write(dove_lcd, LCD_TV_CONTROL1, x);
+}
+
+static int dove_set_clock(struct dove_lcd *dove_lcd)
+{
+	struct drm_crtc *crtc = &dove_lcd->crtc;
+	const struct drm_display_mode *mode = &crtc->mode;
+	struct clk *clk;
+	u32 x, needed_pixclk, ref_clk, div, fract;
+	int clk_src;
+
+	fract = 0;
+	needed_pixclk = mode->clock * 1000;
+#ifdef HANDLE_INTERLACE
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+		needed_pixclk /= 2;
+#endif
+
+	/* first check if pixclk is multiple of current clock */
+	clk_src = dove_lcd->clk_src;
+	clk = dove_lcd->clk[clk_src];
+	ref_clk = clk_get_rate(clk);
+
+	DRM_DEBUG_DRIVER("clk src %d rate %u needed %u div %u mod %u\n",
+			clk_src, ref_clk, needed_pixclk,
+			ref_clk / needed_pixclk, ref_clk % needed_pixclk);
+
+	if (ref_clk % needed_pixclk == 0) {
+		div = ref_clk / needed_pixclk;
+		goto set_clock;
+	}
+
+	/* try to set current clock to requested pixclk */
+	clk_set_rate(clk, needed_pixclk);
+	ref_clk = clk_get_rate(clk);
+	if (ref_clk == needed_pixclk) {
+		div = 1;
+		goto set_clock;
+	}
+
+	/* check if any other clock can set pixclk directly */
+	for (clk_src = 0; clk_src < MAX_CLK; clk_src++) {
+		clk = dove_lcd->clk[clk_src];
+		if (!clk)
+			continue;
+
+		/* try to set clock to requested pixclk */
+		clk_set_rate(clk, needed_pixclk);
+		ref_clk = clk_get_rate(clk);
+
+		if (ref_clk % needed_pixclk == 0) {
+			div = ref_clk / needed_pixclk;
+			goto set_clock;
+		}
+	}
+
+	/* fall back to default fix clock source LCD or AXI */
+	if (dove_lcd->clk[SCLK_SRC_PLLDIV])
+		clk_src = SCLK_SRC_PLLDIV;
+	else
+		clk_src = SCLK_SRC_AXI;
+	clk = dove_lcd->clk[clk_src];
+
+	clk_set_rate(clk, needed_pixclk);
+	ref_clk = clk_get_rate(clk);
+		
+	/* use internal divider */
+	if (false) {
+/*fixme: does not work*/
+		ref_clk /= 1000;
+		needed_pixclk /= 1000;
+		x = (ref_clk * 0x1000 + needed_pixclk - 1) / needed_pixclk;
+		div = x >> 12;
+		if (div < 1)
+			div = 1;
+		else
+			fract = x & 0xfff;
+	} else {
+		div = (ref_clk + needed_pixclk - 1) / needed_pixclk;
+		if (div < 1)
+			div = 1;
+	}
+
+set_clock:
+	dove_lcd->clk_src = clk_src;
+	DRM_DEBUG_DRIVER("set clk src %d ref %u div %u fract %u needed %u\n",
+			clk_src, ref_clk, div, fract, needed_pixclk);
+	x = SET_SCLK(clk_src, div, fract);
+	dove_write(dove_lcd, LCD_CFG_SCLK_DIV, x);
+	return 0;
+}
+
+static void set_dma_control(struct dove_lcd *dove_lcd)
+{
+	const struct drm_display_mode *mode = &dove_lcd->crtc.mode;
+	u32 x;
+	int fmt, rbswap;
+
+	rbswap = 1;				/* default */
+	switch (dove_lcd->crtc.fb->pixel_format) {
+	case DRM_FORMAT_BGR888:
+		rbswap = 0;
+	case DRM_FORMAT_RGB888:
+		fmt = GMODE_RGB888PACKED;
+		break;
+	case DRM_FORMAT_XBGR8888:
+		rbswap = 0;
+	case DRM_FORMAT_XRGB8888:		/* depth 24 */
+		fmt = GMODE_RGBA888;
+		break;
+	case DRM_FORMAT_ABGR8888:
+		rbswap = 0;
+	case DRM_FORMAT_ARGB8888:		/* depth 32 */
+		fmt = GMODE_RGB888UNPACKED;
+		break;
+	case DRM_FORMAT_YVYU:
+		rbswap = 0;
+	case DRM_FORMAT_YUYV:
+		fmt = GMODE_YUV422PACKED;
+		break;
+	case DRM_FORMAT_YVU422:
+		rbswap = 0;
+	case DRM_FORMAT_YUV422:
+		fmt = GMODE_YUV422PLANAR;
+		break;
+	case DRM_FORMAT_YVU420:
+		rbswap = 0;
+	default:
+/*	case DRM_FORMAT_YUV420: */
+		fmt = GMODE_YUV420PLANAR;
+		break;
+	}
+
+	x = dove_read(dove_lcd, LCD_SPU_DMA_CTRL0);
+	x &= ~(CFG_PALETTE_ENA |		/* true color */
+		CFG_GRAFORMAT_MASK |
+		CFG_GRA_SWAPRB |
+		CFG_GRA_FTOGGLE);
+	x |= CFG_GRA_ENA |			/* graphic enable */
+		CFG_GRA_HSMOOTH;		/* horiz. smooth scaling */
+	x |= CFG_GRAFORMAT(fmt);
+
+	if (!rbswap)
+		x |= CFG_GRA_SWAPRB;
+#ifdef HANDLE_INTERLACE
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+		x |= CFG_GRA_FTOGGLE;
+#endif
+	dove_write(dove_lcd, LCD_SPU_DMA_CTRL0, x);
+
+	/*
+	 * trigger DMA on the falling edge of vsync if vsync is
+	 * active low, or on the rising edge if vsync is active high
+	 */
+	if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
+		dove_set(dove_lcd, LCD_SPU_DMA_CTRL1, CFG_VSYNC_INV);
+}
+
+/* this function is called on mode DRM_MODE_DPMS_ON
+ * and also at loading time with gpio_only set */
+static void set_dumb_panel_control(struct dove_lcd *dove_lcd,
+				int gpio_only)
+{
+	const struct drm_display_mode *mode = &dove_lcd->crtc.mode;
+	u32 x;
+
+	x = 0;
+	if (dove_lcd->dpms == DRM_MODE_DPMS_ON)
+		x = CFG_DUMB_ENA;
+	if (!gpio_only) {
+		if (dove_lcd->dpms == DRM_MODE_DPMS_ON)
+			/*
+			 * When dumb interface isn't under 24bit
+			 * It might be under SPI or GPIO. If set
+			 * to 0x7 will force LCD_D[23:0] output
+			 * blank color and damage GPIO and SPI
+			 * behavior.
+			 */
+			x |= CFG_DUMBMODE(DUMB24_RGB888_0);
+		else
+			x |= CFG_DUMBMODE(7);
+/*fixme
+		if (mode->flags & FB_SYNC_COMP_HIGH_ACT)
+			x |= CFG_INV_COMPSYNC;
+*/
+		if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
+			x |= CFG_INV_VSYNC;
+
+		/* Following is a weired workaround. This bit shouldn't be set
+		 * For now, if it's 1080p or 720 then don't set HOR_HIGH_ACT */
+		if ((mode->hdisplay == 1920 && mode->vdisplay == 1080) ||
+		    (mode->hdisplay == 1280 && mode->vdisplay == 720))
+			/* Do nothing */
+			;
+		else
+			if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
+				x |= CFG_INV_HSYNC;
+	}
+
+	dove_write(dove_lcd, LCD_SPU_DUMB_CTRL, x);
+}
+
+void dove_crtc_start(struct dove_lcd *dove_lcd)
+{
+	struct drm_crtc *crtc = &dove_lcd->crtc;
+	struct drm_display_mode *mode = &crtc->mode;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	if (mode->clock == 0) {
+		dev_err(dove_lcd->dev, "crtc_start: no clock!\n");
+		dove_lcd->dpms = DRM_MODE_DPMS_OFF;
+		return;
+	}
+
+	set_frame_timings(dove_lcd);
+	if (dove_set_clock(dove_lcd) < 0)
+		return;
+	set_dma_control(dove_lcd);
+	dove_update_base(dove_lcd);
+	set_dumb_panel_control(dove_lcd, 0);
+
+#ifdef HANDLE_INTERLACE
+	if (dove_lcd->v_sync0) {		/* interlace mode on */
+		dove_set(dove_lcd, SPU_IRQ_ENA, IRQ_GRA_FRAME_DONE);
+	} else {				/* interlace mode off */
+		if (!dove_lcd->vblank_enabled)
+			dove_clear(dove_lcd, SPU_IRQ_ENA, IRQ_GRA_FRAME_DONE);
+	}
+#endif
+
+	DRM_DEBUG_DRIVER("start %s@%d\n",
+			crtc->mode.name, crtc->mode.vrefresh);
+}
+
+void dove_crtc_stop(struct dove_lcd *dove_lcd)
+{
+	DRM_DEBUG_DRIVER("\n");
+
+	dove_clear(dove_lcd, LCD_SPU_DMA_CTRL0, CFG_GRA_ENA);
+	dove_clear(dove_lcd, LCD_SPU_DUMB_CTRL, CFG_DUMB_ENA);
+#ifdef HANDLE_INTERLACE
+	if (dove_lcd->v_sync0
+	 && !dove_lcd->vblank_enabled)
+		dove_clear(dove_lcd, SPU_IRQ_ENA, IRQ_GRA_FRAME_DONE);
+#endif
+}
+
+/* -----------------------------------------------------------------------------
+ * cursor
+ */
+
+/* load the hardware cursor */
+static int load_cursor(struct dove_lcd *dove_lcd,
+			struct drm_file *file_priv,
+			uint32_t handle,
+			int data_len)
+{
+	struct drm_gem_object *obj;
+	struct drm_gem_cma_object *cma_obj;
+	u8 *p_pixel;
+	u32 u, val;
+	u32 ram, color;
+	int i, j, ret;
+
+	obj = drm_gem_object_lookup(dove_drm.drm, file_priv, handle);
+	if (!obj)
+		return -ENOENT;
+
+	if (!obj->map_list.map) {
+		dev_warn(dove_lcd->dev, "cursor not mapped\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (data_len != obj->size) {
+		dev_warn(dove_lcd->dev, "bad cursor size\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	cma_obj = to_drm_gem_cma_obj(obj);
+	p_pixel = cma_obj->vaddr;
+
+	u = CFG_SRAM_INIT_WR_RD(SRAMID_INIT_WRITE) |
+			CFG_SRAM_ADDR_LCDID(SRAMID_HWC);
+	ram = CFG_SRAM_INIT_WR_RD(SRAMID_INIT_WRITE);
+
+	/* load the RGBA cursor to SRAM */
+	for (i = 0; i < data_len / 4 / 4; i++) {
+		color = (p_pixel[3 * 4 + 0] << 24) |	/* red */
+			(p_pixel[2 * 4 + 0] << 16) |
+			(p_pixel[1 * 4 + 0] << 8) |
+			p_pixel[0];
+		dove_write(dove_lcd, LCD_SPU_SRAM_WRDAT, color);
+		dove_write(dove_lcd, LCD_SPU_SRAM_CTRL,
+				ram | CFG_SRAM_ADDR_LCDID(SRAMID_HWC32_RAM1));
+		color = (p_pixel[3 * 4 + 1] << 24) |	/* green */
+			(p_pixel[2 * 4 + 1] << 16) |
+			(p_pixel[1 * 4 + 1] << 8) |
+			p_pixel[1];
+		dove_write(dove_lcd, LCD_SPU_SRAM_WRDAT, color);
+		dove_write(dove_lcd, LCD_SPU_SRAM_CTRL,
+				ram | CFG_SRAM_ADDR_LCDID(SRAMID_HWC32_RAM2));
+		color = (p_pixel[3 * 4 + 2] << 24) |	/* blue */
+			(p_pixel[2 * 4 + 2] << 16) |
+			(p_pixel[1 * 4 + 2] << 8) |
+			p_pixel[2];
+		dove_write(dove_lcd, LCD_SPU_SRAM_WRDAT, color);
+		dove_write(dove_lcd, LCD_SPU_SRAM_CTRL,
+				ram | CFG_SRAM_ADDR_LCDID(SRAMID_HWC32_RAM3));
+		p_pixel += 4 * 4;
+		if ((++ram & 0xff) == 0) {
+			ram -= 0x100;			/* I[7:0] */
+			ram += 1 << 12;			/* J[1:0] */
+		}
+	}
+
+	/* set the transparency */
+	p_pixel = cma_obj->vaddr;
+	for (i = 0; i < data_len / 16 / 4; i++) {
+		val = 0;
+		for (j = 16 * 4 - 4; j >= 0 ; j -= 4) {
+			val <<= 2;
+			if (p_pixel[j + 3])	/* alpha */
+				val |= 1;	/* not transparent */
+		}
+		dove_write(dove_lcd, LCD_SPU_SRAM_WRDAT, val);
+		dove_write(dove_lcd, LCD_SPU_SRAM_CTRL, u++);
+		p_pixel += 16 * 4;
+	}
+	ret = 0;
+out:
+	drm_gem_object_unreference_unlocked(obj);
+	return ret;
+}
+
+static int dove_cursor_set(struct drm_crtc *crtc,
+			struct drm_file *file_priv,
+			uint32_t handle,
+			uint32_t width,
+			uint32_t height)
+{
+	struct dove_lcd *dove_lcd = to_dove_lcd(crtc);
+	int ret;
+
+	DRM_DEBUG_DRIVER("%dx%d handle %d\n", width, height, handle);
+
+	/* disable cursor */
+	dove_clear(dove_lcd, LCD_SPU_DMA_CTRL0, CFG_HWC_ENA);
+
+	if (!handle)
+		return 0;		/* cursor off */
+
+	if (width != 64 || height != 64) {
+		dev_err(dove_lcd->dev, "bad cursor size\n");
+		return -EINVAL;
+	}
+
+	/* load the cursor */
+	ret = load_cursor(dove_lcd, file_priv, handle, width * height * 4);
+	if (ret < 0)
+		return ret;
+
+	/* set cursor size */
+	dove_write(dove_lcd, LCD_SPU_HWC_HPXL_VLN, LCD_H_V(width, height));
+
+	/* enable cursor */
+	dove_set(dove_lcd, LCD_SPU_DMA_CTRL0, CFG_HWC_ENA);
+
+	return 0;
+}
+
+static int dove_cursor_move(struct drm_crtc *crtc,
+				int x, int y)
+{
+	struct dove_lcd *dove_lcd = to_dove_lcd(crtc);
+
+	if (x < 0)
+		x = 0;
+	if (y < 0)
+		y = 0;
+	dove_clear(dove_lcd, LCD_SPU_DMA_CTRL0, CFG_HWC_ENA);
+	dove_write(dove_lcd, LCD_SPU_HWC_OVSA_HPXL_VLN, LCD_H_V(x, y));
+	dove_set(dove_lcd, LCD_SPU_DMA_CTRL0, CFG_HWC_ENA);
+	return 0;
+}
+
+static void dove_crtc_destroy(struct drm_crtc *crtc)
+{
+	struct dove_lcd *dove_lcd = to_dove_lcd(crtc);
+
+	DRM_DEBUG_DRIVER("\n");
+
+	WARN_ON(dove_lcd->dpms == DRM_MODE_DPMS_ON);
+
+	drm_crtc_cleanup(crtc);
+}
+
+static int dove_crtc_page_flip(struct drm_crtc *crtc,
+			struct drm_framebuffer *fb,
+			struct drm_pending_vblank_event *event)
+{
+	struct dove_lcd *dove_lcd = to_dove_lcd(crtc);
+	struct drm_device *drm = dove_drm.drm;
+	unsigned long flags;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	spin_lock_irqsave(&drm->event_lock, flags);
+	if (dove_lcd->event) {
+		spin_unlock_irqrestore(&drm->event_lock, flags);
+		dev_err(drm->dev, "already pending page flip!\n");
+		return -EBUSY;
+	}
+	spin_unlock_irqrestore(&drm->event_lock, flags);
+
+	crtc->fb = fb;
+	dove_update_base(dove_lcd);
+
+	if (event) {
+		event->pipe = 0;
+		spin_lock_irqsave(&drm->event_lock, flags);
+		dove_lcd->event = event;
+		spin_unlock_irqrestore(&drm->event_lock, flags);
+		drm_vblank_get(drm, dove_lcd->num);
+	}
+
+	return 0;
+}
+
+static void dove_crtc_dpms(struct drm_crtc *crtc, int mode)
+{
+	struct dove_lcd *dove_lcd = to_dove_lcd(crtc);
+
+	/* we really only care about on or off */
+	if (mode != DRM_MODE_DPMS_ON)
+		mode = DRM_MODE_DPMS_OFF;
+
+	DRM_DEBUG_DRIVER("dpms %s\n", mode == DRM_MODE_DPMS_ON ? "on" : "off");
+
+	if (dove_lcd->dpms == mode)
+		return;
+
+	dove_lcd->dpms = mode;
+
+	if (mode == DRM_MODE_DPMS_ON)
+		dove_crtc_start(dove_lcd);
+	else
+		dove_crtc_stop(dove_lcd);
+}
+
+static bool dove_crtc_mode_fixup(struct drm_crtc *crtc,
+				const struct drm_display_mode *mode,
+				struct drm_display_mode *adjusted_mode)
+{
+	DRM_DEBUG_DRIVER("\n");
+	if (adjusted_mode->vrefresh == 0) {
+/*		drm_mode_set_name(adjusted_mode); */
+		adjusted_mode->vrefresh = drm_mode_vrefresh(adjusted_mode);
+		DRM_DEBUG_DRIVER("%s@%d\n",
+				adjusted_mode->name, adjusted_mode->vrefresh);
+	}
+	return true;
+}
+
+static void dove_crtc_prepare(struct drm_crtc *crtc)
+{
+	DRM_DEBUG_DRIVER("\n");
+	dove_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+}
+
+static void dove_crtc_commit(struct drm_crtc *crtc)
+{
+	DRM_DEBUG_DRIVER("\n");
+/*	dove_crtc_dpms(crtc, DRM_MODE_DPMS_ON); */
+}
+
+static int dove_crtc_mode_set(struct drm_crtc *crtc,
+			struct drm_display_mode *mode,
+			struct drm_display_mode *adjusted_mode,
+			int x, int y,
+			struct drm_framebuffer *old_fb)
+{
+	unsigned int bandwidth;
+	DRM_DEBUG_DRIVER("\n");
+
+	if (mode->hdisplay > 2048)
+		return MODE_VIRTUAL_X;
+
+	/* width must be multiple of 16 */
+	if (mode->hdisplay & 0xf)
+		return MODE_VIRTUAL_X;
+
+	if (mode->vdisplay > 2048)
+		return MODE_VIRTUAL_Y;
+
+	/* filter out modes that would require too much memory bandwidth: */
+	bandwidth = mode->hdisplay * mode->vdisplay * drm_mode_vrefresh(mode);
+	if (bandwidth > 1920 * 1080 * 60)
+		return MODE_BAD;
+
+/*fixme: is this useful? */
+	mode = &crtc->mode;
+	if (mode->vrefresh == 0) {
+		drm_mode_set_name(mode);
+		mode->vrefresh = drm_mode_vrefresh(mode);
+		DRM_DEBUG_DRIVER("%s@%d\n", mode->name, mode->vrefresh);
+	}
+	return MODE_OK;
+}
+
+static int dove_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
+				struct drm_framebuffer *old_fb)
+{
+	struct dove_lcd *dove_lcd = to_dove_lcd(crtc);
+
+	DRM_DEBUG_DRIVER("\n");
+	dove_update_base(dove_lcd);
+	return 0;
+}
+
+/* mandatory drm function */
+static void dove_crtc_load_lut(struct drm_crtc *crtc)
+{
+	DRM_DEBUG_DRIVER("\n");
+}
+
+static const struct drm_crtc_funcs dove_crtc_funcs = {
+	.cursor_set	= dove_cursor_set,
+	.cursor_move	= dove_cursor_move,
+	.destroy        = dove_crtc_destroy,
+	.set_config     = drm_crtc_helper_set_config,
+	.page_flip      = dove_crtc_page_flip,
+};
+
+static const struct drm_crtc_helper_funcs dove_crtc_helper_funcs = {
+	.dpms           = dove_crtc_dpms,
+	.mode_fixup     = dove_crtc_mode_fixup,
+	.prepare        = dove_crtc_prepare,
+	.commit         = dove_crtc_commit,
+	.mode_set       = dove_crtc_mode_set,
+	.mode_set_base  = dove_crtc_mode_set_base,
+	.load_lut       = dove_crtc_load_lut,
+};
+
+void dove_crtc_cancel_page_flip(struct dove_lcd *dove_lcd,
+				struct drm_file *file)
+{
+	struct drm_pending_vblank_event *event;
+	struct drm_device *drm = dove_drm.drm;
+	unsigned long flags;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	/*
+	 * Destroy the pending vertical blanking event associated with the
+	 * pending page flip, if any, and disable vertical blanking interrupts.
+	 */
+	spin_lock_irqsave(&drm->event_lock, flags);
+	event = dove_lcd->event;
+	if (event && event->base.file_priv == file) {
+		dove_lcd->event = NULL;
+		event->base.destroy(&event->base);
+		drm_vblank_put(drm, dove_lcd->num);
+	}
+	spin_unlock_irqrestore(&drm->event_lock, flags);
+}
+
+/* configure default register values */
+static void dove_set_defaults(struct dove_lcd *dove_lcd)
+{
+	u32 x;
+
+	/* set the default clock */
+	if (dove_lcd->clk[SCLK_SRC_PLLDIV])
+		dove_lcd->clk_src = SCLK_SRC_PLLDIV;
+	else
+		dove_lcd->clk_src = SCLK_SRC_AXI;
+	DRM_DEBUG_DRIVER("default clock %d\n", dove_lcd->clk_src);
+
+	x = SET_SCLK(dove_lcd->clk_src, 1, 0);
+	dove_write(dove_lcd, LCD_CFG_SCLK_DIV, x);
+	dove_write(dove_lcd, LCD_SPU_BLANKCOLOR, 0);
+
+	dove_write(dove_lcd, SPU_IOPAD_CONTROL, IOPAD_DUMB24);
+	dove_write(dove_lcd, LCD_CFG_GRA_START_ADDR1, 0);
+	dove_write(dove_lcd, LCD_SPU_GRA_OVSA_HPXL_VLN, 0);
+	dove_write(dove_lcd, LCD_SPU_SRAM_PARA0, 0);
+	dove_write(dove_lcd, LCD_SPU_SRAM_PARA1, CFG_CSB_256x32 |
+						CFG_CSB_256x24 |
+						CFG_CSB_256x8);
+	dove_write(dove_lcd, LCD_SPU_DMA_CTRL1, CFG_VSYNC_TRIG(2) |
+						CFG_GATED_ENA |
+						CFG_PWRDN_ENA |
+						CFG_ALPHA_MODE(2) |
+						CFG_ALPHA(0xff) |
+						CFG_PXLCMD(0x81));
+
+	/*
+	 * Fix me: to avoid jiggling issue for high resolution in
+	 * dual display, we set watermark to affect LCD AXI read
+	 * from MC (default 0x80). Lower watermark means LCD will
+	 * do DMA read more often.
+	 */
+	x = dove_read(dove_lcd, LCD_CFG_RDREG4F);
+	x &= ~DMA_WATERMARK_MASK;
+	x |= DMA_WATERMARK(0x20);
+
+	/*
+	 * Disable LCD SRAM Read Wait State to resolve HWC32 make
+	 * system hang while use external clock.
+	 */
+	x &= ~LCD_SRAM_WAIT;
+	dove_write(dove_lcd, LCD_CFG_RDREG4F, x);
+
+	/* prepare the hwc32 */
+	dove_set(dove_lcd, LCD_TV_CONTROL1, HWC32_ENABLE);
+
+	/* set hwc32 with 100% static alpha blending factor */
+	dove_write(dove_lcd, LCD_SPU_ALPHA_COLOR1,
+				HWC32_CFG_ALPHA(0xff));
+}
+
+static irqreturn_t dove_lcd_irq(int irq, void *dev_id)
+{
+	struct dove_lcd *dove_lcd = (struct dove_lcd *) dev_id;
+	struct drm_pending_vblank_event *event;
+	struct drm_device *drm = dove_drm.drm;
+	u32 isr;
+	unsigned long flags;
+
+	isr = dove_read(dove_lcd, SPU_IRQ_ISR);
+	dove_write(dove_lcd, SPU_IRQ_ISR, 0);
+
+	DRM_DEBUG_DRIVER("\n");
+
+	if (isr & IRQ_GRA_FRAME_DONE) {
+#ifdef HANDLE_INTERLACE
+		if (dove_lcd->v_sync0) {
+			u32 x;
+
+			x = dove_read(dove_lcd, LCD_TV_CONTROL1);
+			x &= ~(VSYNC_L_OFFSET_MASK | VSYNC_H_OFFSET_MASK);
+			if (isr & IRQ_GRA_FRAME0)
+				x |= dove_lcd->v_sync0;
+			else
+				x |= dove_lcd->v_sync1;
+			dove_write(dove_lcd, LCD_TV_CONTROL1, x);
+		}
+		if (dove_lcd->vblank_enabled)
+#endif
+		drm_handle_vblank(drm, dove_lcd->num); 
+		spin_lock_irqsave(&drm->event_lock, flags);
+		event = dove_lcd->event;
+		dove_lcd->event = NULL;
+		if (event)
+			drm_send_vblank_event(drm, dove_lcd->num, event);
+		spin_unlock_irqrestore(&drm->event_lock, flags);
+		if (event)
+			drm_vblank_put(drm, dove_lcd->num);
+	}
+
+	return IRQ_HANDLED;
+}
+
+/* initialize a lcd */
+static int dove_crtc_init(struct dove_lcd *dove_lcd)
+{
+	struct drm_crtc *crtc = &dove_lcd->crtc;
+	int ret;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	dove_lcd->dpms = DRM_MODE_DPMS_OFF;
+
+	ret = drm_crtc_init(dove_drm.drm, crtc, &dove_crtc_funcs);
+	if (ret < 0)
+		goto fail;
+
+	dove_write(dove_lcd, SPU_IRQ_ENA, 0);	/* disable interrupts */
+	ret = devm_request_irq(dove_lcd->dev, dove_lcd->irq, dove_lcd_irq, 0,
+			dove_lcd->name, dove_lcd);
+	if (ret < 0) {
+		dev_err(dove_lcd->dev, "unable to request irq %d\n",
+				dove_lcd->irq);
+		goto fail;
+	}
+
+	if (ret < 0) {
+		dev_err(dove_lcd->dev, "failed to install IRQ handler\n");
+		goto fail;
+	}
+
+	dove_set_defaults(dove_lcd);
+	set_dumb_panel_control(dove_lcd, 1);
+
+	drm_crtc_helper_add(crtc, &dove_crtc_helper_funcs);
+
+	return 0;
+
+fail:
+	dove_crtc_destroy(crtc);
+	return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * Overlay plane
+ */
+
+static void plane_update_base(struct dove_lcd *dove_lcd,
+				int plane_num,
+				struct drm_framebuffer *fb,
+				int fmt,
+				int x, int y,
+				int w, int h)
+{
+	struct drm_gem_cma_object *gem;
+	unsigned int addr;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	gem = drm_fb_cma_get_gem_obj(fb, plane_num);
+
+	addr = gem->paddr + fb->offsets[0] + y * fb->pitches[0] + x;
+	dove_write(dove_lcd, LCD_SPU_DMA_START_ADDR_Y0, addr);
+
+	switch (fmt) {
+	case VMODE_YUV422PLANAR:
+	case VMODE_YUV420PLANAR:
+		addr += w * h / 2;	/* planar */
+		break;
+	}
+	dove_write(dove_lcd, LCD_SPU_DMA_START_ADDR_U0, addr);
+
+	switch (fmt) {
+	case VMODE_YUV422PLANAR:
+		addr += w * h / 2;
+		break;
+	case VMODE_YUV420PLANAR:
+		addr += w * h / 4;
+		break;
+	}
+	dove_write(dove_lcd, LCD_SPU_DMA_START_ADDR_V0, addr);
+
+	switch (fb->pixel_format) {
+	case VMODE_YUV422PACKED:
+		dove_write(dove_lcd, LCD_SPU_DMA_PITCH_YC,
+						LCD_Y_C(w * 2, 0));
+		dove_write(dove_lcd, LCD_SPU_DMA_PITCH_UV, LCD_U_V(w, w));
+		break;
+	default:
+/*	case VMODE_YUV422PLANAR: */
+/*	case VMODE_YUV420PLANAR: */
+		dove_write(dove_lcd, LCD_SPU_DMA_PITCH_YC, LCD_Y_C(w, 0));
+		dove_write(dove_lcd, LCD_SPU_DMA_PITCH_UV,
+						LCD_U_V(w / 2, w / 2));
+		break;
+	}
+}
+
+static int dove_plane_update(struct drm_plane *plane,
+			struct drm_crtc *crtc,
+			struct drm_framebuffer *fb,
+			int crtc_x, int crtc_y,
+			unsigned int crtc_w, unsigned int crtc_h,
+			uint32_t src_x, uint32_t src_y,
+			uint32_t src_w, uint32_t src_h)
+{
+	struct dove_lcd *dove_lcd = to_dove_lcd(crtc);
+	u32 x, x_bk;
+	int fmt, rbswap;
+
+	DRM_DEBUG_DRIVER("%d\n", plane == &dove_lcd->planes[PLANE_VID]);
+
+	if (plane != &dove_lcd->planes[PLANE_VID])
+		return 0;
+	rbswap = 1;				/* default */
+	switch (fb->pixel_format) {
+	case DRM_FORMAT_YVYU:
+		rbswap = 0;
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_UYVY:
+		fmt = VMODE_YUV422PACKED;
+		break;
+	case DRM_FORMAT_YVU422:
+		rbswap = 0;
+	case DRM_FORMAT_YUV422:
+		fmt = VMODE_YUV422PLANAR;
+		break;
+	case DRM_FORMAT_YVU420:
+		rbswap = 0;
+	default:
+/*	case DRM_FORMAT_YUV420: */
+		fmt = VMODE_YUV420PLANAR;
+		break;
+	}
+
+	x_bk = x = dove_read(dove_lcd, LCD_SPU_DMA_CTRL0);
+					/* clear video layer's field */
+	x &= ~(CFG_YUV2RGB_DMA | CFG_DMA_SWAP_MASK |
+		CFG_DMA_TSTMODE | CFG_DMA_HSMOOTH | CFG_DMA_FTOGGLE |
+		CFG_DMAFORMAT_MASK | CFG_PALETTE_ENA);
+	x |= CFG_DMA_HSMOOTH;		/* enable horizontal smooth scaling */
+	x |= CFG_DMAFORMAT(fmt);	/* configure hardware pixel format */
+/*fixme: no RGB */
+	if (fb->pixel_format == DRM_FORMAT_UYVY) {
+		x |= CFG_YUV2RGB_DMA;
+	} else if (fmt == VMODE_YUV422PACKED) {
+		x |= CFG_YUV2RGB_DMA |
+			CFG_DMA_SWAPYU |
+			CFG_DMA_SWAPRB;
+		if (rbswap)
+			x |= CFG_DMA_SWAPUV;
+	} else {				/* planar */
+		x |= CFG_YUV2RGB_DMA |
+			CFG_DMA_SWAPRB;
+		if (!rbswap)
+			x |= CFG_DMA_SWAPUV;
+	}
+	if (x != x_bk)
+		dove_write(dove_lcd, LCD_SPU_DMA_CTRL0, x);
+
+	/* set the dma addresses */
+	plane_update_base(dove_lcd, PLANE_VID,
+			fb, fmt, src_x, src_y, src_w, src_h);
+
+	/* original size */
+	dove_write(dove_lcd, LCD_SPU_DMA_HPXL_VLN,
+				LCD_H_V(src_w, src_h));
+
+	/* scaled size */
+	dove_write(dove_lcd, LCD_SPU_DZM_HPXL_VLN,
+				LCD_H_V(crtc_w, crtc_h));
+
+	/* update video position offset */
+	dove_write(dove_lcd, LCD_SPUT_DMA_OVSA_HPXL_VLN,
+				LCD_H_V(crtc_x, crtc_y));
+	return 0;
+}
+
+static int dove_plane_disable(struct drm_plane *plane)
+{
+	struct dove_lcd *dove_lcd = to_dove_lcd(plane->crtc);
+
+	DRM_DEBUG_DRIVER("%d\n",
+			plane == &dove_lcd->planes[PLANE_VID]);
+
+	if (plane != &dove_lcd->planes[PLANE_VID])
+		return 0;
+
+	dove_clear(dove_lcd, LCD_SPU_DMA_CTRL0, CFG_DMA_ENA);
+	return 0;
+}
+
+static void dove_plane_destroy(struct drm_plane *plane)
+{
+	dove_plane_disable(plane);
+	drm_plane_cleanup(plane);
+}
+
+static const struct drm_plane_funcs plane_funcs = {
+	.update_plane = dove_plane_update,
+	.disable_plane = dove_plane_disable,
+	.destroy = dove_plane_destroy,
+};
+static const uint32_t gfx_formats[] = {
+	DRM_FORMAT_BGR888,
+	DRM_FORMAT_RGB888,
+	DRM_FORMAT_XBGR8888,
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ABGR8888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVU422,
+	DRM_FORMAT_YUV422,
+	DRM_FORMAT_YVU420,
+	DRM_FORMAT_YUV420,
+};
+static const uint32_t vid_formats[] = {
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVU422,
+	DRM_FORMAT_YUV422,
+	DRM_FORMAT_YVU420,
+	DRM_FORMAT_YUV420,
+	DRM_FORMAT_UYVY,
+};
+
+static int dove_planes_init(struct dove_lcd *dove_lcd)
+{
+	struct drm_device *drm = dove_drm.drm;
+	struct drm_plane *plane;
+	int ret;
+
+	if (false) {
+		plane = &dove_lcd->planes[PLANE_VID];
+		ret = drm_plane_init(drm, plane, 1 << dove_lcd->num,
+				&plane_funcs,
+				gfx_formats, ARRAY_SIZE(gfx_formats), true);
+		if (ret < 0)
+			return ret;
+		plane->crtc = &dove_lcd->crtc;
+	}
+	plane = &dove_lcd->planes[PLANE_VID];
+	ret = drm_plane_init(drm, plane, 1 << dove_lcd->num,
+				&plane_funcs,
+				vid_formats, ARRAY_SIZE(vid_formats), false);
+	if (ret < 0)
+		return ret;
+	plane->crtc = &dove_lcd->crtc;
+	return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * Initialization
+ */
+
+int dove_lcd_init(struct dove_lcd *dove_lcd)
+{
+	int ret;
+
+	ret = dove_crtc_init(dove_lcd);
+	if (ret < 0)
+		return ret;
+	ret = dove_planes_init(dove_lcd);
+	if (ret < 0)
+		dev_err(dove_lcd->dev, "failed to create the planes\n");
+
+	return ret;
+}
+
+/* at probe time, get the possible LCD clocks */
+static int get_lcd_clocks(struct dove_lcd *dove_lcd)
+{
+	struct device *dev = dove_lcd->dev;
+	struct device_node *np = dev->of_node;
+	struct of_phandle_args clkspec;
+	struct clk *clk;
+	int i, no_clock, ret;
+
+	no_clock = 1;
+	for (i = 0; i < MAX_CLK; i++) {
+
+		/* check first if there is a phandle to the clock */
+		ret = of_parse_phandle_with_args(np,
+					"clocks", "#clock-cells", i,
+					&clkspec);
+		if (ret)
+			continue;		/* no defined clock here */
+		of_node_put(clkspec.np);
+
+		/* if no clock driver, ignore this clock */
+		clk = of_clk_get(np, i);
+		if (IS_ERR(clk)) {
+			if (!dove_drm.probe_defer) {
+				dove_drm.probe_defer = 1;
+				return -EPROBE_DEFER;
+			}
+			dev_err(dev, "no driver for clock %i\n", i);
+			continue;
+		}
+		DRM_DEBUG_DRIVER("clock %d ok\n", i);
+		clk_prepare_enable(clk);
+		dove_lcd->clk[i] = clk;
+		no_clock = 0;
+	}
+	if (no_clock) {
+		dev_err(dev, "no available clock\n");
+		return -EINVAL;
+	}
+	if (!dove_lcd->clk[SCLK_SRC_PLLDIV] && !dove_lcd->clk[SCLK_SRC_AXI]) {
+		dev_err(dev, "no fixed clock\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int dove_lcd_remove(struct platform_device *pdev)
+{
+	struct dove_lcd *dove_lcd = platform_get_drvdata(pdev);
+	struct clk *clk;
+	int i;
+
+	dove_write(dove_lcd, SPU_IRQ_ENA, 0);	/* disable interrupts */
+
+	if (dove_drm.lcds[dove_lcd->num] == dove_lcd)
+		dove_drm.lcds[dove_lcd->num] = NULL;
+
+	for (i = 0; i < MAX_CLK; i++) {
+		clk = dove_lcd->clk[i];
+		if (clk) {
+			clk_disable_unprepare(clk);
+			clk_put(clk);
+		}
+	}
+	
+	kfree(dove_lcd);
+	return 0;
+}
+
+static int dove_lcd_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct dove_lcd *dove_lcd;
+	struct resource *res;
+	int ret;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	/* bail out early if no DT data */
+	if (!np) {
+		dev_err(dev, "no device-tree\n");
+		return -ENXIO;
+	}
+
+	dove_lcd = kzalloc(sizeof *dove_lcd, GFP_KERNEL);
+	if (!dove_lcd) {
+		dev_err(dev, "failed to allocate private data\n");
+		return -ENOMEM;
+	}
+	platform_set_drvdata(pdev, dove_lcd);
+	dove_lcd->dev = dev;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(dev, "failed to get memory resource\n");
+		ret = -EINVAL;
+		goto fail;
+	}
+
+	dove_lcd->mmio = devm_ioremap_resource(dev, res);
+	if (IS_ERR(dove_lcd->mmio)) {
+		dev_err(dev, "failed map registers\n");
+		ret = PTR_ERR(dove_lcd->mmio);
+		dove_lcd->mmio = NULL;
+		goto fail;
+	}
+
+	switch (((u32) dove_lcd->mmio) & DOVE_LCD_REG_BASE_MASK) {
+	case DOVE_LCD0_REG_BASE:
+/*		dove_lcd->num = 0; */
+		break;
+	case DOVE_LCD1_REG_BASE:
+		dove_lcd->num = 1;
+		break;
+	default:
+		dev_err(dev, "unknown lcd reg base %08x\n",
+					(u32) dove_lcd->mmio);
+		ret = -EINVAL;
+		goto fail;
+	}
+	snprintf(dove_lcd->name, sizeof dove_lcd->name, "dove-lcd%d",
+			dove_lcd->num);
+	dove_drm.lcds[dove_lcd->num] = dove_lcd;
+
+	dove_lcd->irq = irq_of_parse_and_map(np, 0);
+	if (dove_lcd->irq < 0 || dove_lcd->irq == NO_IRQ) {
+		dev_err(dev, "unable to get irq lcd %d\n", dove_lcd->num);
+		ret = -EINVAL;
+		goto fail;
+	}
+
+	ret = get_lcd_clocks(dove_lcd);
+	if (ret < 0)
+		goto fail;
+
+	/* check the presence of a possible external slave encoder */
+	ret = dove_ec_probe(dove_lcd);
+	if (ret < 0)
+		goto fail;
+
+	/* init done, try to initialize the drm driver */
+	return dove_probed();
+
+fail:
+	dove_lcd_remove(pdev);
+	return ret;
+}
+
+static struct of_device_id dove_lcd_of_match[] = {
+	{ .compatible = "marvell,dove-lcd" },
+	{ },
+};
+struct platform_driver dove_lcd_platform_driver = {
+	.driver     = {
+		.owner  = THIS_MODULE,
+		.name   = "dove-lcd",
+		.of_match_table = dove_lcd_of_match,
+	},
+	.probe      = dove_lcd_probe,
+	.remove     = dove_lcd_remove,
+};

drivers/gpu/drm/dove/dove_dcon.h new file +64 -0

new file mode 100644
index 0000000..da2b99c
@@ -0,0 +1,64 @@
+/*
+ * Display controller registers of Marvell DOVE
+ *
+ * Copyright (C) 2013
+ *   Jean-Francois Moine <[email protected]>
+ *   Sebastian Hesselbarth <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _DOVE_DCON_H_
+#define	_DOVE_DCON_H_
+
+/* ------------< DCON register >------------ */
+
+#define DCON_CTL0		0x0000
+#define   VGA_CLK_DISABLE		BIT(25)
+#define   DCON_CLK_DISABLE		BIT(24)
+#define   DCON_RST			BIT(23)
+#define   LCD_Disable			BIT(17)
+#define   Reverse_Scan			BIT(10)
+#define   LCD_Port_B_Select_MASK	0x00000300
+#define		Port_B_Select_LCD1	0x00000000
+#define		Port_B_Select_LCD0	0x00000100
+#define		Port_B_Select_A_copy	0x00000300
+#define   LCD_Port_A_Select_MASK	0x000000c0
+#define		Port_A_Select_LCD	0x00000000
+#define		Port_A_Select_OLPC	0x00000040
+#define		Port_A_Select_Dual	0x00000080
+#define		Port_A_Select_ext	0x000000c0
+#define   LBUF_EN			BIT(5)
+#define DCON_IRQ_CTL		0x0008
+#define   IRQ_Control_MASK		0x00ff0000
+#define DITHER_REG_R		0x0050
+#define DITHER_REG_G		0x0054
+#define DITHER_REG_B		0x0058
+#define DCON_DITHER_PAT_RL	0x0060
+#define DCON_DITHER_PAT_RH	0x0064
+#define DCON_DITHER_PAT_GL	0x0068
+#define DCON_DITHER_PAT_GH	0x006c
+#define DCON_DITHER_PAT_BL	0x0070
+#define DCON_DITHER_PAT_BH	0x0074
+#define VGA_Global		0x0080
+#define VGA_CHA			0x0084
+#define VGA_CHB			0x0088
+#define VGA_CHC			0x008c
+#define VGA_CHA_STA		0x0090
+#define VGA_CHB_STA		0x0094
+#define VGA_CHC_STA		0x0098
+#define CT_LUT_INDEX		0x00a4
+#define CT_LUT_DATA		0x00a8
+#define FTDLL_CTL		0x00c0
+
+#endif /* _DOVE_DCON_H_ */

drivers/gpu/drm/dove/dove_drv.c new file +380 -0

new file mode 100644
index 0000000..e9e77ad
@@ -0,0 +1,380 @@
+/*
+ * Marvell Dove DRM driver - main
+ *
+ * Copyright (C) 2013
+ *   Jean-Francois Moine <[email protected]>
+ *   Sebastian Hesselbarth <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/of.h>
+
+#include "dove_drv.h"
+
+#define DRIVER_NAME	"dove-drm"
+#define DRIVER_DESC	"Marvell Dove DRM"
+#define DRIVER_DATE	"20130516"
+#define DRIVER_MAJOR	1
+#define DRIVER_MINOR	0
+
+struct dove_drm dove_drm;
+static struct platform_device *g_pdev;
+static atomic_t probed;
+
+static struct drm_framebuffer *dove_fb_create(struct drm_device *drm,
+					struct drm_file *file_priv,
+					struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	DRM_DEBUG_DRIVER("fmt %.4s\n", (char *) &mode_cmd->pixel_format);
+
+	switch (mode_cmd->pixel_format) {
+	case DRM_FORMAT_BGR888:
+	case DRM_FORMAT_RGB888:
+	case DRM_FORMAT_XBGR8888:
+	case DRM_FORMAT_XRGB8888:
+	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_YVYU:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVU422:
+	case DRM_FORMAT_YUV422:
+	case DRM_FORMAT_YVU420:
+	case DRM_FORMAT_YUV420:
+		break;
+	default:
+		return ERR_PTR(-EINVAL);
+	}
+	return drm_fb_cma_create(drm, file_priv, mode_cmd);
+}
+
+static void dove_fb_output_poll_changed(struct drm_device *drm)
+{
+	DRM_DEBUG_DRIVER("fb:%d\n", dove_drm.fbdev != NULL);
+	if (dove_drm.fbdev)
+		drm_fbdev_cma_hotplug_event(dove_drm.fbdev);
+}
+
+static const struct drm_mode_config_funcs mode_config_funcs = {
+	.fb_create = dove_fb_create,
+	.output_poll_changed = dove_fb_output_poll_changed,
+};
+
+/*
+ * DRM operations:
+ */
+static int dove_unload(struct drm_device *drm)
+{
+	struct dove_lcd *dove_lcd;
+	int i;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	for (i = 0; i < MAX_DOVE_LCD; i++) {
+		dove_lcd = dove_drm.lcds[i];
+		if (dove_lcd) {
+			if (dove_lcd->planes[PLANE_VID].dev)
+				drm_plane_cleanup(&dove_lcd->planes[PLANE_VID]);
+			if (dove_lcd->planes[PLANE_GFX].dev)
+				drm_plane_cleanup(&dove_lcd->planes[PLANE_GFX]);
+		}
+	}
+	drm_kms_helper_poll_fini(drm);
+	drm_mode_config_cleanup(drm);
+	drm_vblank_cleanup(drm);
+
+	return 0;
+}
+
+/* this function is called when all LCDs and dcon have been probed */
+static int dove_load(struct drm_device *drm, unsigned long flags)
+{
+	struct platform_device *pdev = drm->platformdev;
+	struct dove_lcd *dove_lcd;
+	int i, ret;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	dove_drm.drm = drm;
+	platform_set_drvdata(pdev, &dove_drm);
+	drm->dev_private = &dove_drm;
+
+	drm_mode_config_init(drm);
+
+/*	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); */
+
+	for (i = 0; i < MAX_DOVE_LCD; i++) {
+		dove_lcd = dove_drm.lcds[i];
+		if (dove_lcd) {
+			ret = dove_lcd_init(dove_lcd);
+			if (ret < 0)
+				goto fail;
+			ret = dove_ec_init(dove_lcd);
+			if (ret < 0)
+				goto fail;
+		}
+	}
+
+	drm->mode_config.min_width = 0;
+	drm->mode_config.min_height = 0;
+	drm->mode_config.max_width = 2048;
+	drm->mode_config.max_height = 2048;
+	drm->mode_config.funcs = &mode_config_funcs;
+
+	ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
+	if (ret < 0) {
+		dev_err(drm->dev, "failed to initialize vblank\n");
+		goto fail;
+	}
+
+	dove_drm.fbdev = drm_fbdev_cma_init(drm,
+					32,	/* bpp */
+					drm->mode_config.num_crtc,
+					drm->mode_config.num_connector);
+
+	drm_kms_helper_poll_init(drm);
+	return 0;
+fail:
+	dove_unload(drm);
+	return ret;
+}
+
+static void dove_preclose(struct drm_device *drm, struct drm_file *file)
+{
+	struct dove_lcd *dove_lcd;
+	int i;
+
+	for (i = 0; i < MAX_DOVE_LCD; i++) {
+		dove_lcd = dove_drm.lcds[i];
+		if (dove_lcd)
+			dove_crtc_cancel_page_flip(dove_lcd, file);
+	}
+}
+
+static void dove_lastclose(struct drm_device *drm)
+{
+	drm_fbdev_cma_restore_mode(dove_drm.fbdev);
+}
+
+static int dove_gem_cma_dumb_create(struct drm_file *file_priv,
+				struct drm_device *dev,
+				struct drm_mode_create_dumb *args)
+{
+	if (args->height * args->width * args->bpp == 0) {
+		dev_err(dev->dev, "dumb_create %dx%d bpp %d!\n",
+			args->height, args->width, args->bpp);
+		return -ENOMEM;
+	}
+	return drm_gem_cma_dumb_create(file_priv, dev, args);
+}
+
+static const struct file_operations fops = {
+	.owner		= THIS_MODULE,
+	.open		= drm_open,
+	.release	= drm_release,
+	.unlocked_ioctl	= drm_ioctl,
+	.poll		= drm_poll,
+	.read		= drm_read,
+	.fasync		= drm_fasync,
+	.llseek		= no_llseek,
+	.mmap		= drm_gem_cma_mmap,
+};
+
+static struct drm_driver dove_driver = {
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET,
+	.load			= dove_load,
+	.unload			= dove_unload,
+	.preclose		= dove_preclose,
+	.lastclose		= dove_lastclose,
+	.get_vblank_counter	= dove_vblank_count,
+	.enable_vblank		= dove_enable_vblank,
+	.disable_vblank		= dove_disable_vblank,
+	.gem_free_object	= drm_gem_cma_free_object,
+	.gem_vm_ops		= &drm_gem_cma_vm_ops,
+	.dumb_create		= dove_gem_cma_dumb_create,
+	.dumb_map_offset	= drm_gem_cma_dumb_map_offset,
+	.dumb_destroy		= drm_gem_cma_dumb_destroy,
+#ifdef CONFIG_DEBUG_FS
+	.debugfs_init		= dove_debugfs_init,
+	.debugfs_cleanup	= dove_debugfs_cleanup,
+#endif
+	.fops			= &fops,
+
+	.name			= DRIVER_NAME,
+	.desc			= DRIVER_DESC,
+	.date			= DRIVER_DATE,
+	.major			= DRIVER_MAJOR,
+	.minor			= DRIVER_MINOR,
+};
+
+#ifdef CONFIG_PM_SLEEP
+/*
+ * Power management
+ */
+static int dove_pm_suspend(struct device *dev)
+{
+	struct drm_device *drm = dev_get_drvdata(dev);
+	struct dove_lcd *dove_lcd;
+	int i;
+
+	drm_kms_helper_poll_disable(drm);
+	for (i = 0; i < MAX_DOVE_LCD; i++) {
+		dove_lcd = dove_drm.lcds[i];
+		if (dove_lcd)
+			dove_crtc_stop(dove_lcd);
+	}
+	return 0;
+}
+
+static int dove_pm_resume(struct device *dev)
+{
+	struct drm_device *drm = dev_get_drvdata(dev);
+	struct dove_lcd *dove_lcd;
+	int i;
+
+	for (i = 0; i < MAX_DOVE_LCD; i++) {
+		dove_lcd = dove_drm.lcds[i];
+		if (dove_lcd
+		 && dove_lcd->dpms == DRM_MODE_DPMS_ON)
+			dove_crtc_start(dove_lcd);
+	}
+	drm_kms_helper_poll_enable(drm);
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops dove_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(dove_pm_suspend, dove_pm_resume)
+};
+
+/*
+ * Platform driver
+ */
+
+/* count the number of awaited sub devices */
+static int dove_subdev_cnt(void)
+{
+	struct device_node *np;
+	unsigned int n;
+	static struct of_device_id dove_of_subdev[] = {
+		{ .compatible = "marvell,dove-lcd" },
+		{ .compatible = "marvell,dove-dcon" },
+		{ },
+	};
+
+	n = 0;
+	np = NULL;
+	for (;;) {
+		np = of_find_matching_node_and_match(np,
+						dove_of_subdev, NULL);
+		if (!np)
+			break;
+		if (of_device_is_available(np))
+			n++;
+	}
+	return n;
+}
+
+int dove_probed(void)
+{
+	if (atomic_add_return(1, &probed) == 0)
+		return drm_platform_init(&dove_driver, g_pdev);
+	return 0;
+}
+
+static int dove_pdev_probe(struct platform_device *pdev)
+{
+	int awaited;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	g_pdev = pdev;
+
+	awaited = dove_subdev_cnt();
+	if (awaited == 0) {
+		dev_err(&pdev->dev, "no lcd nor dcon devices\n");
+		return -ENXIO;
+	}
+	if (atomic_sub_return(awaited, &probed) == 0)
+		return drm_platform_init(&dove_driver, pdev);
+	return 0;
+}
+
+static int dove_pdev_remove(struct platform_device *pdev)
+{
+	drm_platform_exit(&dove_driver, pdev);
+	return 0;
+}
+
+static struct of_device_id dove_of_match[] = {
+	{ .compatible = "marvell,dove-video" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, dove_of_match);
+
+static struct platform_driver dove_platform_driver = {
+	.probe      = dove_pdev_probe,
+	.remove     = dove_pdev_remove,
+	.driver     = {
+		.owner  = THIS_MODULE,
+		.name   = "dove-drm",
+		.pm     = &dove_pm_ops,
+		.of_match_table = dove_of_match,
+	},
+};
+
+static int __init dove_drm_init(void)
+{
+	int ret;
+
+	/* wait for other drivers to be loaded (si5351, tda998x..) */
+	msleep(200);
+
+/* uncomment to activate the drm trace at startup time */
+/*	drm_debug = DRM_UT_CORE | DRM_UT_DRIVER | DRM_UT_KMS; */
+
+	DRM_DEBUG_DRIVER("\n");
+
+	ret = platform_driver_register(&dove_lcd_platform_driver);
+	if (ret < 0)
+		return ret;
+	ret = platform_driver_register(&dove_dcon_platform_driver);
+	if (ret < 0)
+		goto out1;
+	ret = platform_driver_register(&dove_platform_driver);
+	if (ret < 0)
+		goto out2;
+	return 0;
+
+out2:
+	platform_driver_unregister(&dove_dcon_platform_driver);
+out1:
+	platform_driver_unregister(&dove_lcd_platform_driver);
+	return ret;
+}
+static void __exit dove_drm_fini(void)
+{
+	platform_driver_unregister(&dove_platform_driver);
+	platform_driver_unregister(&dove_dcon_platform_driver);
+	platform_driver_unregister(&dove_lcd_platform_driver);
+}
+module_init(dove_drm_init);
+module_exit(dove_drm_fini);
+
+MODULE_AUTHOR("Jean-Francois Moine <[email protected]>");
+MODULE_AUTHOR("Sebastian Hesselbarth <[email protected]>");
+MODULE_DESCRIPTION("Marvell Dove DRM Driver");
+MODULE_LICENSE("GPL");

drivers/gpu/drm/dove/dove_drv.h new file +93 -0

new file mode 100644
index 0000000..7488c7e
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2013 Jean-François Moine
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __DOVE_DRV_H__
+#define __DOVE_DRV_H__
+
+#include <linux/clk.h>
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_encoder_slave.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+
+/* (not tested) */
+/*#define HANDLE_INTERLACE 1*/
+
+#define MAX_DOVE_LCD 2		/* max number of dove lcd devices */
+#define MAX_CLK 4		/* max number of clocks per crtc */
+
+#define PLANE_GFX 0
+#define PLANE_VID 1
+#define NPLANES 2
+
+struct dove_lcd {
+	void __iomem *mmio;
+	struct device *dev;
+	struct drm_crtc crtc;
+
+	u8 num;			/* index in dove_drm */
+	u8 dpms;
+
+#ifdef HANDLE_INTERLACE
+	u8 vblank_enabled;
+	u32 v_sync0;
+	u32 v_sync1;
+#endif
+
+	short clk_src;		/* current clock source */
+	struct clk *clk[MAX_CLK];
+
+	int irq;
+	char name[16];
+
+	struct drm_pending_vblank_event *event;
+
+	struct drm_plane planes[NPLANES];
+
+	struct drm_connector connector;
+	struct drm_encoder_slave encoder_slave;
+};
+
+struct dove_drm {
+	struct drm_device *drm;
+	struct dove_lcd *lcds[MAX_DOVE_LCD];
+
+	struct drm_fbdev_cma *fbdev;
+	int probe_defer;
+};
+
+extern struct dove_drm dove_drm;
+int dove_probed(void);
+
+u32 dove_vblank_count(struct drm_device *dev, int crtc);
+int dove_enable_vblank(struct drm_device *dev, int crtc);
+void dove_disable_vblank(struct drm_device *dev, int crtc);
+int dove_lcd_init(struct dove_lcd *dove_lcd);
+void dove_crtc_cancel_page_flip(struct dove_lcd *dove_lcd,
+				struct drm_file *file);
+void dove_crtc_start(struct dove_lcd *dove_lcd);
+void dove_crtc_stop(struct dove_lcd *dove_lcd);
+#ifdef CONFIG_DEBUG_FS
+int dove_debugfs_init(struct drm_minor *minor);
+void dove_debugfs_cleanup(struct drm_minor *minor);
+#endif
+extern struct platform_driver dove_lcd_platform_driver;
+
+int dove_ec_probe(struct dove_lcd *dove_lcd);
+int dove_ec_init(struct dove_lcd *dove_lcd);
+extern struct platform_driver dove_dcon_platform_driver;
+#endif /* __DOVE_DRV_H__ */

drivers/gpu/drm/dove/dove_ec.c new file +570 -0

new file mode 100644
index 0000000..003b031
@@ -0,0 +1,570 @@
+/*
+ * Marvell Dove DRM driver - encoder / connector and display controller
+ *
+ * Copyright (C) 2013
+ *   Jean-Francois Moine <[email protected]>
+ *   Sebastian Hesselbarth <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/i2c.h>
+#include <linux/of_i2c.h>
+#include <linux/module.h>
+
+#include "dove_drv.h"
+#include "dove_dcon.h"
+
+struct dove_dcon {
+	void __iomem *mmio;
+	struct device *dev;
+};
+static struct dove_dcon dove_dcon;
+
+/* -----------------------------------------------------------------------------
+ * Encoder
+ */
+/* LVDS and VGA/DAC functions */
+static void dove_encoder_dpms(struct drm_encoder *encoder, int mode)
+{
+}
+static bool dove_encoder_mode_fixup(struct drm_encoder *encoder,
+				const struct drm_display_mode *mode,
+				struct drm_display_mode *adjusted_mode)
+{
+	return true;
+}
+static void dove_encoder_prepare(struct drm_encoder *encoder)
+{
+}
+static void dove_encoder_commit(struct drm_encoder *encoder)
+{
+}
+static void dove_encoder_mode_set(struct drm_encoder *encoder,
+				struct drm_display_mode *mode,
+				struct drm_display_mode *adjusted_mode)
+{
+}
+
+static const struct drm_encoder_helper_funcs lvds_encoder_helper_funcs = {
+	.dpms = dove_encoder_dpms,
+	.mode_fixup = dove_encoder_mode_fixup,
+	.prepare = dove_encoder_prepare,
+	.commit = dove_encoder_commit,
+	.mode_set = dove_encoder_mode_set,
+};
+
+/* HDMI (i2c) functions */
+static const struct drm_encoder_helper_funcs hdmi_encoder_helper_funcs = {
+	.dpms = drm_i2c_encoder_dpms,
+	.mode_fixup = drm_i2c_encoder_mode_fixup,
+	.prepare = drm_i2c_encoder_prepare,
+	.commit = drm_i2c_encoder_commit,
+	.mode_set = drm_i2c_encoder_mode_set,
+};
+
+static void dove_drm_encoder_destroy(struct drm_encoder *encoder)
+{
+	struct drm_encoder_slave *encoder_slave = to_encoder_slave(encoder);
+	struct i2c_client *i2c_client;
+	struct module *module;
+
+	if (encoder_slave->slave_funcs)
+		encoder_slave->slave_funcs->destroy(encoder);
+	i2c_client = encoder_slave->bus_priv;
+	if (i2c_client) {
+		module = i2c_client->driver->driver.owner;
+		module_put(module);
+	}
+	if (encoder->dev)
+		drm_encoder_cleanup(encoder);
+}
+
+static const struct drm_encoder_funcs encoder_funcs = {
+	.destroy = dove_drm_encoder_destroy,
+};
+
+static int dove_encoder_get_hdmi(struct dove_lcd *dove_lcd)
+{
+	struct device *dev = dove_lcd->dev;
+	struct drm_device *drm = dove_drm.drm;
+	struct drm_encoder_slave *encoder_slave = &dove_lcd->encoder_slave;
+	struct drm_encoder *encoder = &encoder_slave->base;
+	struct drm_connector *connector = &dove_lcd->connector;
+	struct i2c_client *i2c_client;
+	struct module *module;
+	struct drm_i2c_encoder_driver *encoder_drv;
+	int ret;
+
+	i2c_client = encoder_slave->bus_priv;
+	if (!i2c_client) {
+		dev_err(dev, "no external-encoder for hdmi\n");
+		return -EINVAL;
+	}
+
+	encoder_drv = to_drm_i2c_encoder_driver(i2c_client->driver);
+	if (!encoder_drv || !encoder_drv->encoder_init) {
+		dev_err(dev, "no external encoder init\n");
+		return -EINVAL;
+	}
+
+	/* lock the external encoder module */
+	module = i2c_client->driver->driver.owner;
+	if (!module || !try_module_get(module)) {
+		dev_err(dev, "cannot get module %s\n", module->name);
+		return -EINVAL;
+	}
+
+	ret = encoder_drv->encoder_init(i2c_client, drm, encoder_slave);
+	if (ret < 0) {
+		dev_err(dev, "slave encoder init failed\n");
+		return ret;
+	}
+	encoder_slave->slave_funcs->create_resources(encoder, connector);
+	return ret;
+}
+
+static int dove_encoder_init(struct dove_lcd *dove_lcd,
+				int mode_encoder)
+{
+	struct drm_device *drm = dove_drm.drm;
+	struct drm_encoder_slave *encoder_slave = &dove_lcd->encoder_slave;
+	struct drm_encoder *encoder = &encoder_slave->base;
+	int ret;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	/* do early init in case of error */
+	ret = drm_encoder_init(drm, encoder, &encoder_funcs, mode_encoder);
+	if (ret < 0) {
+		dev_err(dove_lcd->dev, "drm encoder init failed\n");
+		return ret;
+	}
+
+	encoder->possible_crtcs = 1 << dove_lcd->num;
+
+	/*
+	 * If the display controller is present,
+	 * - the port A cannot be VGA/DAC,
+	 * - the port B can be only VGA/DAC and may receive the lcd 0 output.
+	 */
+	if (dove_dcon.mmio) {
+		if (dove_lcd->num == 0) {
+			if (mode_encoder == DRM_MODE_ENCODER_DAC) {
+				dev_err(dove_lcd->dev,
+						"bad lcd 0 port-type\n");
+				return -EINVAL;
+			}
+		} else {
+			if (mode_encoder != DRM_MODE_ENCODER_DAC) {
+				dev_err(dove_lcd->dev,
+						"bad lcd 1 port-type\n");
+				return -EINVAL;
+			}
+			encoder->possible_crtcs |= 1;
+
+			/* the port B may receive the LCD 0 output */
+			encoder->possible_clones = 1;
+		}
+	}
+
+	switch (mode_encoder) {
+	case DRM_MODE_ENCODER_DAC:
+/*fixme: to do */
+	case DRM_MODE_ENCODER_LVDS:
+		drm_encoder_helper_add(encoder, &lvds_encoder_helper_funcs);
+		ret = 0;
+		break;
+	case DRM_MODE_ENCODER_TMDS:
+		drm_encoder_helper_add(encoder, &hdmi_encoder_helper_funcs);
+		ret = dove_encoder_get_hdmi(dove_lcd);
+		break;
+	}
+	return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * Connector
+ */
+
+static int dove_lvds_get_modes(struct dove_lcd *dove_lcd)
+{
+	struct device *dev = dove_lcd->dev;
+	struct device_node *np = dev->of_node;
+	struct drm_connector *connector = &dove_lcd->connector;
+	struct drm_display_mode *mode;
+	int clock, hdisplay, vdisplay, hfp, hbp, vfp, vbp, hs, vs;
+	int w_mm, h_mm;
+	int ret;
+
+	/* same as of_videomode, but simpler! */
+	np = of_find_node_by_name(np, "display-timings");
+	if (!np) {
+		dev_err(dev, "no display-timings\n");
+		return -EINVAL;
+	}
+	np = of_get_next_child(np, NULL);
+	if (!np) {
+		dev_err(dev, "no 'mode' subnode in DT\n");
+		return -EINVAL;
+	}
+
+	ret = 0;
+	ret |= of_property_read_u32(np, "hactive", &hdisplay);
+	ret |= of_property_read_u32(np, "vactive", &vdisplay);
+	ret |= of_property_read_u32(np, "hfront-porch", &hfp);
+	ret |= of_property_read_u32(np, "hsync-len", &hs);
+	ret |= of_property_read_u32(np, "hback-porch", &hbp);
+	ret |= of_property_read_u32(np, "vfront-porch", &vfp);
+	ret |= of_property_read_u32(np, "vsync-len", &vs);
+	ret |= of_property_read_u32(np, "vback-porch", &vbp);
+	ret |= of_property_read_u32(np, "clock", &clock);
+	if (ret) {
+		dev_err(dev, "bad display-timings\n");
+		return -EINVAL;
+	}
+	if (clock < 15000 || clock > 150000) {
+		dev_err(dev, "bad clock\n");
+		return -EINVAL;
+	}
+
+	mode = drm_mode_create(dove_drm.drm);
+	if (!mode) {
+		ret = -ENOMEM;
+		return ret;
+	}
+
+	mode->clock = clock;
+	mode->hdisplay = hdisplay;
+	mode->hsync_start = hdisplay + hfp;
+	mode->hsync_end = mode->hsync_start + hs;
+	mode->htotal = mode->hsync_end + hbp;
+	mode->vdisplay = vdisplay;
+	mode->vsync_start = vdisplay + vfp;
+	mode->vsync_end = mode->vsync_start + vs;
+	mode->vtotal = mode->vsync_end + vbp;
+
+	drm_mode_set_name(mode);
+	mode->vrefresh = drm_mode_vrefresh(mode);
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_probed_add(connector, mode);
+
+	/* optional display dimension */
+	ret = of_property_read_u32(np, "width-mm", &w_mm);
+	ret |= of_property_read_u32(np, "height-mm", &h_mm);
+	if (ret >= 0) {
+		connector->display_info.width_mm = w_mm;
+		connector->display_info.height_mm = h_mm;
+	}
+	return 1;
+}
+
+static int dove_drm_connector_get_modes(struct drm_connector *connector)
+{
+	struct dove_lcd *dove_lcd = 
+		container_of(connector, struct dove_lcd, connector);
+	struct drm_encoder_slave *encoder_slave = &dove_lcd->encoder_slave;
+	int ret;
+
+	switch (connector->connector_type) {
+	case DRM_MODE_CONNECTOR_VGA:
+/*fixme:to do */
+	case DRM_MODE_CONNECTOR_LVDS:
+		ret = dove_lvds_get_modes(dove_lcd);
+		break;
+	default:
+/*	case DRM_MODE_CONNECTOR_HDMIA: */
+/*	case DRM_MODE_CONNECTOR_HDMIB: */
+		ret = encoder_slave->slave_funcs->get_modes(&encoder_slave->base,
+							connector);
+		break;
+	}
+	DRM_DEBUG_DRIVER("-> %d\n", ret);
+	return ret;
+}
+
+static int dove_drm_connector_mode_valid(struct drm_connector *connector,
+					  struct drm_display_mode *mode)
+{
+	struct dove_lcd *dove_lcd = 
+		container_of(connector, struct dove_lcd, connector);
+	struct drm_encoder_slave *encoder_slave = &dove_lcd->encoder_slave;
+
+	if (!encoder_slave->slave_funcs)
+		return MODE_OK;
+	return encoder_slave->slave_funcs->mode_valid(&encoder_slave->base,
+							mode);
+}
+
+static struct drm_encoder *
+dove_drm_connector_best_encoder(struct drm_connector *connector)
+{
+	struct dove_lcd *dove_lcd = 
+		container_of(connector, struct dove_lcd, connector);
+
+	return &dove_lcd->encoder_slave.base;
+}
+
+static const struct drm_connector_helper_funcs connector_helper_funcs = {
+	.get_modes = dove_drm_connector_get_modes,
+	.mode_valid = dove_drm_connector_mode_valid,
+	.best_encoder = dove_drm_connector_best_encoder,
+};
+
+static void dove_drm_connector_destroy(struct drm_connector *connector)
+{
+	if (!connector->dev)
+		return;
+	drm_sysfs_connector_remove(connector);
+	drm_connector_cleanup(connector);
+}
+
+static enum drm_connector_status
+dove_drm_connector_detect(struct drm_connector *connector, bool force)
+{
+	struct dove_lcd *dove_lcd = 
+		container_of(connector, struct dove_lcd, connector);
+	struct drm_encoder_slave *encoder_slave = &dove_lcd->encoder_slave;
+
+	DRM_DEBUG_DRIVER("\n");
+	if (encoder_slave->slave_funcs)
+		return encoder_slave->slave_funcs->detect(&encoder_slave->base,
+							connector);
+/*fixme: KO with VGA*/
+	return connector_status_connected;
+}
+
+static void dove_drm_connector_dpms(struct drm_connector *connector,
+				int mode)
+{
+	struct dove_lcd *dove_lcd =
+		container_of(connector, struct dove_lcd, connector);
+	struct drm_encoder *encoder = connector->encoder;
+	struct drm_encoder_slave *encoder_slave = to_encoder_slave(encoder);
+	struct dove_lcd *dove_lcd2 =
+		container_of(encoder_slave, struct dove_lcd, encoder_slave);
+	int modeA, modeB;
+	u32 reg;
+
+	if (mode == dove_lcd->connector.dpms)
+		return;
+
+	/* adjust the port B input */
+	if (dove_dcon.mmio) {
+		reg = readl(dove_dcon.mmio + DCON_CTL0);
+		reg &= ~LCD_Port_B_Select_MASK;
+		if (dove_lcd2 != dove_lcd) {
+			if (dove_lcd->num == 0) {
+				modeA = mode;
+				modeB = dove_lcd2->connector.dpms;
+			} else {
+				modeA = dove_lcd->connector.dpms;
+				modeB = mode;
+			}
+
+			if (modeB == DRM_MODE_DPMS_ON) {
+				if (modeA == DRM_MODE_DPMS_ON)
+					reg |= Port_B_Select_A_copy;
+				else
+					reg |= Port_B_Select_LCD0;
+			}
+		}
+		writel(reg, dove_dcon.mmio + DCON_CTL0);
+		DRM_DEBUG_DRIVER("port B select %08x\n", reg);
+	}
+
+	drm_helper_connector_dpms(connector, mode);
+}
+
+static int dove_connector_set_property(struct drm_connector *connector,
+				struct drm_property *property,
+				uint64_t value)
+{
+	struct dove_lcd *dove_lcd = 
+		container_of(connector, struct dove_lcd, connector);
+	struct drm_encoder_slave *encoder_slave = &dove_lcd->encoder_slave;
+
+	DRM_DEBUG_DRIVER("\n");
+	if (!encoder_slave->slave_funcs)
+		return 0;
+	return encoder_slave->slave_funcs->set_property(&encoder_slave->base,
+							connector,
+							property,
+							value);
+}
+
+static const struct drm_connector_funcs connector_funcs = {
+	.destroy = dove_drm_connector_destroy,
+	.dpms = dove_drm_connector_dpms,
+	.detect = dove_drm_connector_detect,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.set_property = dove_connector_set_property,
+};
+
+/* initialize the couple connector-encoder of a LCD */
+int dove_ec_init(struct dove_lcd *dove_lcd)
+{
+	struct device *dev = dove_lcd->dev;
+	struct device_node *np = dev->of_node;
+	struct drm_device *drm = dove_drm.drm;
+	struct drm_connector *connector = &dove_lcd->connector;
+	struct drm_encoder_slave *encoder_slave = &dove_lcd->encoder_slave;
+	struct drm_encoder *encoder = &encoder_slave->base;
+	u32 port_type;
+	int mode_encoder, ret;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	/* get the port (connector) type */
+	if (of_property_read_u32(np, "marvell,port-type", &port_type)) {
+		dev_err(dev, "no port-type\n");
+		return -EINVAL;
+	}
+	switch (port_type) {
+	case DRM_MODE_CONNECTOR_VGA:		/* 1 */
+		mode_encoder = DRM_MODE_ENCODER_DAC;
+		break;
+	case DRM_MODE_CONNECTOR_LVDS:		/* 7 */
+		mode_encoder = DRM_MODE_ENCODER_LVDS;
+		break;
+	case DRM_MODE_CONNECTOR_HDMIA:		/* 11 */
+	case DRM_MODE_CONNECTOR_HDMIB:		/* 12 */
+		mode_encoder = DRM_MODE_ENCODER_TMDS;
+		break;
+	default:
+		dev_err(dev, "bad port type %d\n", port_type);
+		return -EINVAL;
+	}
+
+	ret = drm_connector_init(drm, connector, &connector_funcs, port_type);
+	if (ret < 0)
+		return ret;
+
+	drm_connector_helper_add(connector, &connector_helper_funcs);
+
+#ifdef HANDLE_INTERLACE
+	connector->interlace_allowed = true;
+#endif
+
+	ret = dove_encoder_init(dove_lcd, mode_encoder);
+	if (ret < 0)
+		goto err;
+
+	ret = drm_mode_connector_attach_encoder(connector, encoder);
+	if (ret < 0)
+		goto err;
+
+	connector->encoder = encoder;
+
+	ret = drm_sysfs_connector_add(connector);
+	if (ret < 0)
+		goto err;
+
+	drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+	ret = drm_object_property_set_value(&connector->base,
+					drm->mode_config.dpms_property,
+					DRM_MODE_DPMS_OFF);
+	if (ret < 0)
+		goto err;
+	return 0;
+
+err:
+	dev_err(dev, "dove_ec_init err %d\n", ret);
+	dove_drm_encoder_destroy(&encoder_slave->base);
+	drm_connector_cleanup(connector);
+	return ret;
+}
+
+/* at probe time, check the presence of a possible external slave encoder */
+int dove_ec_probe(struct dove_lcd *dove_lcd)
+{
+	struct device *dev = dove_lcd->dev;
+	struct device_node *np = dev->of_node;
+	struct device_node *i2c_node;
+	struct i2c_client *i2c_client;
+
+	/* get the optional external encoder */
+	i2c_node = of_parse_phandle(np, "marvell,external-encoder", 0);
+	if (!i2c_node)
+		return 0;
+
+	i2c_client = of_find_i2c_device_by_node(i2c_node);
+	of_node_put(i2c_node);
+	if (!i2c_client) {
+		dev_err(dev, "bad external-encoder\n");
+		return -EINVAL;
+	}
+
+	/* check if the slave-encoder module is initialized */
+	if (!i2c_client->driver) {
+		if (dove_drm.probe_defer) {
+			dev_err(dev, "cannot get the external-encoder\n");
+			return -EINVAL;
+		}
+		dove_drm.probe_defer = 1;
+		return -EPROBE_DEFER;
+	}
+
+	dove_lcd->encoder_slave.bus_priv = i2c_client;
+	return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * Display controller
+ */
+
+static int dove_dcon_remove(struct platform_device *pdev)
+{
+	dove_dcon.mmio = NULL;
+	return 0;
+}
+
+static int dove_dcon_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	void __iomem *mmio;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "failed to get dcon resource\n");
+		return -EINVAL;
+	}
+
+	mmio = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(mmio)) {
+		dev_err(&pdev->dev, "failed map dcon registers\n");
+		return PTR_ERR(mmio);
+	}
+
+	dove_dcon.mmio = mmio;
+	dove_dcon.dev = &pdev->dev;
+
+	/* init done, try to initialize the drm driver */
+	return dove_probed();
+}
+
+static struct of_device_id dove_dcon_of_match[] = {
+	{ .compatible = "marvell,dove-dcon" },
+	{ },
+};
+struct platform_driver dove_dcon_platform_driver = {
+	.driver     = {
+		.owner  = THIS_MODULE,
+		.name   = "dove-dcon",
+		.of_match_table = dove_dcon_of_match,
+	},
+	.probe      = dove_dcon_probe,
+	.remove     = dove_dcon_remove,
+};

drivers/gpu/drm/dove/dove_lcd.h new file +519 -0

new file mode 100644
index 0000000..03b198b
@@ -0,0 +1,519 @@
+/*
+ * LCD controller registers of Marvell DOVE
+ *
+ * Copyright (C) 2013
+ *   Jean-Francois Moine <[email protected]>
+ *   Sebastian Hesselbarth <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _DOVE_LCD_H_
+#define	_DOVE_LCD_H_
+
+/* ------------< LCD register >------------ */
+
+/* Video Frame 0&1 start address registers */
+#define	LCD_TV_CONTROL1			0x0084
+#define   VSYNC_L_OFFSET(o)			((o) << 20)
+#define   VSYNC_L_OFFSET_MASK			(0xfff << 20)
+#define   HWC32_ENABLE				BIT(13)
+#define   VSYNC_OFFSET_EN			BIT(12)
+#define   VSYNC_H_OFFSET(o)			(o)
+#define   VSYNC_H_OFFSET_MASK			0xfff
+
+/* Video Frame 0&1 start address registers */
+#define	LCD_SPU_DMA_START_ADDR_Y0	0x00c0
+#define	LCD_SPU_DMA_START_ADDR_U0	0x00c4
+#define	LCD_SPU_DMA_START_ADDR_V0	0x00c8
+#define LCD_CFG_DMA_START_ADDR_0	0x00cc /* Cmd address */
+#define	LCD_SPU_DMA_START_ADDR_Y1	0x00d0
+#define	LCD_SPU_DMA_START_ADDR_U1	0x00d4
+#define	LCD_SPU_DMA_START_ADDR_V1	0x00d8
+#define LCD_CFG_DMA_START_ADDR_1	0x00dc /* Cmd address */
+
+/* YC & UV Pitch */
+#define LCD_SPU_DMA_PITCH_YC		0x00e0
+#define   LCD_Y_C(y, c)				(((c) << 16) | (y))
+#define LCD_SPU_DMA_PITCH_UV		0x00e4
+#define   LCD_U_V(u, v)				(((v) << 16) | (u))
+
+/* Video Starting Point on Screen Register */
+#define LCD_SPUT_DMA_OVSA_HPXL_VLN	0x00e8
+
+/* Video Size Register */
+#define LCD_SPU_DMA_HPXL_VLN		0x00ec
+
+/* Video Size After zooming Register */
+#define LCD_SPU_DZM_HPXL_VLN		0x00f0
+
+/* Graphic Frame 0&1 Starting Address Register */
+#define LCD_CFG_GRA_START_ADDR0		0x00f4
+#define LCD_CFG_GRA_START_ADDR1		0x00f8
+
+/* Graphic Frame Pitch */
+#define LCD_CFG_GRA_PITCH		0x00fc
+
+/* Graphic Starting Point on Screen Register */
+#define LCD_SPU_GRA_OVSA_HPXL_VLN	0x0100
+
+/* Graphic Size Register */
+#define LCD_SPU_GRA_HPXL_VLN		0x0104
+
+/* Graphic Size after Zooming Register */
+#define LCD_SPU_GZM_HPXL_VLN		0x0108
+
+/* HW Cursor Starting Point on Screen Register */
+#define LCD_SPU_HWC_OVSA_HPXL_VLN	0x010c
+
+/* HW Cursor Size */
+#define LCD_SPU_HWC_HPXL_VLN		0x0110
+
+/* Total Screen Size Register */
+#define LCD_SPUT_V_H_TOTAL		0x0114
+
+/* Total Screen Active Size Register */
+#define LCD_SPU_V_H_ACTIVE		0x0118
+#define   LCD_H_V(h, v)				(((v) << 16) | (h))
+#define   H_LCD(x)				((x) & 0xffff)
+#define   V_LCD(x)				(((x) >> 16) & 0xffff)
+
+/* Screen H&V Porch Register */
+#define LCD_SPU_H_PORCH			0x011c
+#define LCD_SPU_V_PORCH			0x0120
+#define   LCD_F_B(f, b)				(((b) << 16) | (f))
+#define   F_LCD(x)				((x) & 0xffff)
+#define   B_LCD(x)				(((x) >> 16) & 0xffff)
+
+/* Screen Blank Color Register */
+#define LCD_SPU_BLANKCOLOR		0x0124
+
+/* HW Cursor Color 1&2 Register */
+#define LCD_SPU_ALPHA_COLOR1		0x0128
+#define   HWC32_CFG_ALPHA(alpha)		((alpha) << 24)
+#define LCD_SPU_ALPHA_COLOR2		0x012c
+#define   COLOR_MASK				0x00ffffff
+#define   COLOR_RGB(r, g, b) (((b) << 16) | ((g) << 8) | (r))
+
+/* Video YUV Color Key Control */
+#define LCD_SPU_COLORKEY_Y		0x0130
+#define   CFG_CKEY_Y2(y2)			((y2) << 24)
+#define   CFG_CKEY_Y2_MASK			0xff000000
+#define   CFG_CKEY_Y1(y1)			((y1) << 16)
+#define   CFG_CKEY_Y1_MASK			0x00ff0000
+#define   CFG_CKEY_Y(y)				((y) << 8)
+#define   CFG_CKEY_Y_MASK			0x0000ff00
+#define   CFG_ALPHA_Y(y)			(y)
+#define   CFG_ALPHA_Y_MASK			0x000000ff
+#define LCD_SPU_COLORKEY_U		0x0134
+#define   CFG_CKEY_U2(u2)			((u2) << 24)
+#define   CFG_CKEY_U2_MASK			0xff000000
+#define   CFG_CKEY_U1(u1)			((u1) << 16)
+#define   CFG_CKEY_U1_MASK			0x00ff0000
+#define   CFG_CKEY_U(u)				((u) << 8)
+#define   CFG_CKEY_U_MASK			0x0000ff00
+#define   CFG_ALPHA_U(u)			(u)
+#define   CFG_ALPHA_U_MASK			0x000000ff
+#define LCD_SPU_COLORKEY_V		0x0138
+#define   CFG_CKEY_V2(v2)			((v2) << 24)
+#define   CFG_CKEY_V2_MASK			0xff000000
+#define   CFG_CKEY_V1(v1)			((v1) << 16)
+#define   CFG_CKEY_V1_MASK			0x00ff0000
+#define   CFG_CKEY_V(v)				((v) << 8)
+#define   CFG_CKEY_V_MASK			0x0000ff00
+#define   CFG_ALPHA_V(v)			(v)
+#define   CFG_ALPHA_V_MASK			0x000000ff
+
+/* LCD General Configuration Register */
+#define LCD_CFG_RDREG4F			0x013c
+#define   LCD_SRAM_WAIT				BIT(11)
+#define   DMA_WATERMARK_MASK			0xff
+#define   DMA_WATERMARK(m)			(m)
+
+/* SPI Read Data Register */
+#define LCD_SPU_SPI_RXDATA		0x0140
+
+/* Smart Panel Read Data Register */
+#define LCD_SPU_ISA_RSDATA		0x0144
+#define   ISA_RXDATA_16BIT_1_DATA_MASK		0x000000ff
+#define   ISA_RXDATA_16BIT_2_DATA_MASK		0x0000ff00
+#define   ISA_RXDATA_16BIT_3_DATA_MASK		0x00ff0000
+#define   ISA_RXDATA_16BIT_4_DATA_MASK		0xff000000
+#define   ISA_RXDATA_32BIT_1_DATA_MASK		0x00ffffff
+
+/* HWC SRAM Read Data Register */
+#define LCD_SPU_HWC_RDDAT		0x0158
+
+/* Gamma Table SRAM Read Data Register */
+#define LCD_SPU_GAMMA_RDDAT		0x015c
+#define   GAMMA_RDDAT_MASK			0x000000ff
+
+/* Palette Table SRAM Read Data Register */
+#define LCD_SPU_PALETTE_RDDAT		0x0160
+#define   PALETTE_RDDAT_MASK			0x00ffffff
+
+/* I/O Pads Input Read Only Register */
+#define LCD_SPU_IOPAD_IN		0x0178
+#define   IOPAD_IN_MASK				0x0fffffff
+
+/* Reserved Read Only Registers */
+#define LCD_CFG_RDREG5F			0x017c
+#define   IRE_FRAME_CNT_MASK			0x000000c0
+#define   IPE_FRAME_CNT_MASK			0x00000030
+#define   GRA_FRAME_CNT_MASK			0x0000000c	/* Graphic */
+#define   DMA_FRAME_CNT_MASK			0x00000003	/* Video */
+
+/* SPI Control Register. */
+#define LCD_SPU_SPI_CTRL		0x0180
+#define   CFG_SCLKCNT(div)			((div) << 24)
+#define   CFG_SCLKCNT_MASK			0xff000000
+#define   CFG_RXBITS(rx)			((rx) << 16)
+#define   CFG_RXBITS_MASK			0x00ff0000
+#define   CFG_TXBITS(tx)			((tx) << 8)
+#define   CFG_TXBITS_MASK			0x0000ff00
+#define   CFG_CLKINV				BIT(7)
+#define   CFG_KEEPXFER				BIT(6)
+#define   CFG_RXBITSTO0				BIT(5)
+#define   CFG_TXBITSTO0				BIT(4)
+#define   CFG_SPI_ENA				BIT(3)
+#define   CFG_SPI_SEL				BIT(2)
+#define   CFG_SPI_3W4WB				BIT(1)
+#define   CFG_SPI_START				BIT(0)
+
+/* SPI Tx Data Register */
+#define LCD_SPU_SPI_TXDATA		0x0184
+
+/*
+ *  1. Smart Pannel 8-bit Bus Control Register.
+ *  2. AHB Slave Path Data Port Register
+ */
+#define LCD_SPU_SMPN_CTRL		0x0188
+
+/* DMA Control 0 Register */
+#define LCD_SPU_DMA_CTRL0		0x0190
+#define   CFG_NOBLENDING			BIT(31)
+#define   CFG_GAMMA_ENA				BIT(30)
+#define   CFG_CBSH_ENA				BIT(29)
+#define   CFG_PALETTE_ENA			BIT(28)
+#define   CFG_ARBFAST_ENA			BIT(27)
+#define   CFG_HWC_1BITMOD			BIT(26)
+#define   CFG_HWC_1BITENA			BIT(25)
+#define   CFG_HWC_ENA				BIT(24)
+#define   CFG_DMAFORMAT(dmaformat)		((dmaformat) << 20)
+#define   CFG_DMAFORMAT_MASK			0x00f00000
+#define   CFG_GRAFORMAT(graformat)		((graformat) << 16)
+#define   CFG_GRAFORMAT_MASK			0x000f0000
+/* for graphic part */
+#define   CFG_GRA_FTOGGLE			BIT(15)
+#define   CFG_GRA_HSMOOTH			BIT(14)
+#define   CFG_GRA_TSTMODE			BIT(13)
+#define   CFG_GRA_SWAPRB			BIT(12)
+#define   CFG_GRA_SWAPUV			BIT(11)
+#define   CFG_GRA_SWAPYU			BIT(10)
+#define   CFG_YUV2RGB_GRA			BIT(9)
+#define   CFG_GRA_ENA				BIT(8)
+/* for video part */
+#define   CFG_DMA_FTOGGLE			BIT(7)
+#define   CFG_DMA_HSMOOTH			BIT(6)
+#define   CFG_DMA_TSTMODE			BIT(5)
+#define   CFG_DMA_SWAPRB			BIT(4)
+#define   CFG_DMA_SWAPUV			BIT(3)
+#define   CFG_DMA_SWAPYU			BIT(2)
+#define   CFG_DMA_SWAP_MASK			0x0000001c
+#define   CFG_YUV2RGB_DMA			BIT(1)
+#define   CFG_DMA_ENA				BIT(0)
+
+/* DMA Control 1 Register */
+#define LCD_SPU_DMA_CTRL1		0x0194
+#define   CFG_FRAME_TRIG			BIT(31)
+#define   CFG_VSYNC_TRIG(trig)			((trig) << 28)
+#define   CFG_VSYNC_TRIG_MASK			0x70000000
+#define   CFG_VSYNC_INV				BIT(27)
+#define   CFG_COLOR_KEY_MODE(cmode)		((cmode) << 24)
+#define   CFG_COLOR_KEY_MASK			0x07000000
+#define   CFG_CARRY				BIT(23)
+#define   CFG_GATED_ENA				BIT(21)
+#define   CFG_PWRDN_ENA				BIT(20)
+#define   CFG_DSCALE(dscale)			((dscale) << 18)
+#define   CFG_DSCALE_MASK			0x000c0000
+#define   CFG_ALPHA_MODE(amode)			((amode) << 16)
+#define   CFG_ALPHA_MODE_MASK			0x00030000
+#define   CFG_ALPHA(alpha)			((alpha) << 8)
+#define   CFG_ALPHA_MASK			0x0000ff00
+#define   CFG_PXLCMD(pxlcmd)			(pxlcmd)
+#define   CFG_PXLCMD_MASK			0x000000ff
+
+/* SRAM Control Register */
+#define LCD_SPU_SRAM_CTRL		0x0198
+#define   CFG_SRAM_INIT_WR_RD(mode)		((mode) << 14)
+#define   CFG_SRAM_INIT_WR_RD_MASK		0x0000c000
+#define   CFG_SRAM_ADDR_LCDID(id)		((id) << 8)
+#define   CFG_SRAM_ADDR_LCDID_MASK		0x00000f00
+#define   CFG_SRAM_ADDR(addr)			(addr)
+#define   CFG_SRAM_ADDR_MASK			0x000000ff
+
+/* SRAM Write Data Register */
+#define LCD_SPU_SRAM_WRDAT		0x019c
+
+/* SRAM RTC/WTC Control Register */
+#define LCD_SPU_SRAM_PARA0		0x01a0
+
+/* SRAM Power Down Control Register */
+#define LCD_SPU_SRAM_PARA1		0x01a4
+#define   CFG_CSB_256x32			BIT(15)		/* HWC */
+#define   CFG_CSB_256x24			BIT(14)		/* Palette */
+#define   CFG_CSB_256x8				BIT(13)		/* Gamma */
+#define   CFG_PDWN256x32			BIT(7)		/* HWC */
+#define   CFG_PDWN256x24			BIT(6)		/* Palette */
+#define   CFG_PDWN256x8				BIT(5)		/* Gamma */
+#define   CFG_PDWN32x32				BIT(3)
+#define   CFG_PDWN16x66				BIT(2)
+#define   CFG_PDWN32x66				BIT(1)
+#define   CFG_PDWN64x66				BIT(0)
+
+/* Smart or Dumb Panel Clock Divider */
+#define LCD_CFG_SCLK_DIV		0x01a8
+#define   SET_SCLK(src, div, frac) (((src) << 30) | ((frac) << 16 ) | (div))
+
+/* Video Contrast Register */
+#define LCD_SPU_CONTRAST		0x01ac
+#define   CFG_BRIGHTNESS(bright)		((bright) << 16)
+#define   CFG_BRIGHTNESS_MASK			0xffff0000
+#define   CFG_CONTRAST(contrast)		(contrast)
+#define   CFG_CONTRAST_MASK			0x0000ffff
+
+/* Video Saturation Register */
+#define LCD_SPU_SATURATION		0x01b0
+#define   CFG_C_MULTS(mult)			((mult) << 16)
+#define   CFG_C_MULTS_MASK			0xffff0000
+#define   CFG_SATURATION(sat)			(sat)
+#define   CFG_SATURATION_MASK			0x0000ffff
+
+/* Video Hue Adjust Register */
+#define LCD_SPU_CBSH_HUE		0x01b4
+#define   CFG_SIN0(sin0)			((sin0) << 16)
+#define   CFG_SIN0_MASK				0xffff0000
+#define   CFG_COS0(con0)			(con0)
+#define   CFG_COS0_MASK				0x0000ffff
+
+/* Dump LCD Panel Control Register */
+#define LCD_SPU_DUMB_CTRL		0x01b8
+#define   CFG_DUMBMODE(mode)			((mode) << 28)
+#define   CFG_DUMBMODE_MASK			0xf0000000
+#define   CFG_LCDGPIO_O(data)			((data) << 20)
+#define   CFG_LCDGPIO_O_MASK			0x0ff00000
+#define   CFG_LCDGPIO_ENA(gpio)			((gpio) << 12)
+#define   CFG_LCDGPIO_ENA_MASK			0x000ff000
+#define   CFG_BIAS_OUT				BIT(8)
+#define   CFG_REVERSE_RGB			BIT(7)
+#define   CFG_INV_COMPBLANK			BIT(6)
+#define   CFG_INV_COMPSYNC			BIT(5)
+#define   CFG_INV_HENA				BIT(4)
+#define   CFG_INV_VSYNC				BIT(3)
+#define   CFG_INV_HSYNC				BIT(2)
+#define   CFG_INV_PCLK				BIT(1)
+#define   CFG_DUMB_ENA				BIT(0)
+
+/* LCD I/O Pads Control Register */
+#define SPU_IOPAD_CONTROL		0x01bc
+#define   CFG_VSC_LINEAR(vm)			((vm) << 18)	/* gfx */
+#define   CFG_VSC_LINEAR_MASK			0x000c0000
+#define   CFG_GRA_VM_ENA			BIT(15)		/* gfx */
+#define   CFG_DMA_VM_ENA			BIT(14)		/* video */
+#define   CFG_CMD_VM_ENA			BIT(13)
+#define   CFG_CSC(csc)				((csc) << 8)
+#define   CFG_CSC_MASK				0x00000300
+#define   CFG_AXICTRL(axi)			((axi) << 4)
+#define   CFG_AXICTRL_MASK			0x000000f0
+#define   CFG_IOPADMODE(iopad)			(iopad)
+#define   CFG_IOPADMODE_MASK			0x0000000f
+
+/* LCD Interrupt Control Register */
+#define SPU_IRQ_ENA			0x1c0
+/* LCD Interrupt Status Register */
+#define SPU_IRQ_ISR			0x1c4
+#define   IRQ_DMA_FRAME0			BIT(31)
+#define   IRQ_DMA_FRAME1			BIT(30)
+#define   IRQ_DMA_FIFO_UNDERFLOW		BIT(29)
+#define   IRQ_GRA_FRAME0			BIT(27)
+#define   IRQ_GRA_FRAME1			BIT(26)
+#define   IRQ_GRA_FIFO_UNDERFLOW		BIT(25)
+#define   IRQ_SMART_VSYNC			BIT(23)
+#define   IRQ_DUMB_FRAME_DONE			BIT(22)
+#define   IRQ_SMART_FRAME_DONE			BIT(21)
+#define   IRQ_HWCURSOR_FRAME_DONE		BIT(20)
+#define   IRQ_AHB_CMD_EMPTY			BIT(19)
+#define   IRQ_SPI_TRANSFER_DONE			BIT(18)
+#define   IRQ_POWERDOWN				BIT(17)
+#define   IRQ_AXI_ERROR				BIT(16)
+/* read only status */
+#define   STA_DMA_FRAME0			BIT(15)
+#define   STA_DMA_FRAME1			BIT(14)
+#define   STA_DMA_FRAME_COUNT(x) (((x) & (BIT(13) | BIT(12))) >> 12)
+#define   STA_GRA_FRAME0			BIT(11)
+#define   STA_GRA_FRAME1			BIT(10)
+#define   STA_GRA_FRAME_COUNT(x) (((x) & (BIT(9) | BIT(8))) >> 8)
+#define   STA_SMART_VSYNC			BIT(7)
+#define   STA_DUMB_FRAME_DONE			BIT(6)
+#define   STA_SMART_FRAME_DONE			BIT(5)
+#define   STA_HWCURSOR_FRAME_DONE		BIT(4)
+#define   STA_AHB_CMD_EMPTY			BIT(3)
+#define   STA_DMA_FIFO_EMPTY			BIT(2)
+#define   STA_GRA_FIFO_EMPTY			BIT(1)
+#define   STA_POWERDOWN				BIT(0)
+
+#define IRQ_DMA_FRAME_DONE			(IRQ_DMA_FRAME0 | IRQ_DMA_FRAME1)
+#define IRQ_GRA_FRAME_DONE \
+			(IRQ_GRA_FRAME0 | IRQ_GRA_FRAME1 | IRQ_SMART_VSYNC)
+
+/*
+ * defined Video Memory Color format for DMA control 0 register
+ * DMA0 bit[23:20]
+ */
+#define VMODE_RGB565		0x0
+#define VMODE_RGB1555		0x1
+#define VMODE_RGB888PACKED	0x2
+#define VMODE_RGB888UNPACKED	0x3
+#define VMODE_RGBA888		0x4
+#define VMODE_YUV422PACKED	0x5
+#define VMODE_YUV422PLANAR	0x6
+#define VMODE_YUV420PLANAR	0x7
+#define VMODE_SMPNCMD		0x8
+#define VMODE_PALETTE4BIT	0x9
+#define VMODE_PALETTE8BIT	0xa
+#define VMODE_RESERVED		0xb
+
+/*
+ * defined Graphic Memory Color format for DMA control 0 register
+ * DMA0 bit[19:16]
+ */
+#define GMODE_RGB565		0x0
+#define GMODE_RGB1555		0x1
+#define GMODE_RGB888PACKED	0x2
+#define GMODE_RGB888UNPACKED	0x3
+#define GMODE_RGBA888		0x4
+#define GMODE_YUV422PACKED	0x5
+#define GMODE_YUV422PLANAR	0x6
+#define GMODE_YUV420PLANAR	0x7
+#define GMODE_SMPNCMD		0x8
+#define GMODE_PALETTE4BIT	0x9
+#define GMODE_PALETTE8BIT	0xa
+#define GMODE_RESERVED		0xb
+
+/*
+ * define for DMA control 1 register
+ */
+#define DMA1_FRAME_TRIG		31	/* bit location */
+#define DMA1_VSYNC_MODE		28
+#define DMA1_VSYNC_INV		27
+#define DMA1_CKEY		24
+#define DMA1_CARRY		23
+#define DMA1_LNBUF_ENA		22
+#define DMA1_GATED_ENA		21
+#define DMA1_PWRDN_ENA		20
+#define DMA1_DSCALE		18
+#define DMA1_ALPHA_MODE		16
+#define DMA1_ALPHA		 8
+#define DMA1_PXLCMD		 0
+
+/*
+ * defined for Configure Dumb Mode
+ * DUMB LCD Panel bit[31:28]
+ */
+#define DUMB16_RGB565_0		0x0
+#define DUMB16_RGB565_1		0x1
+#define DUMB18_RGB666_0		0x2
+#define DUMB18_RGB666_1		0x3
+#define DUMB12_RGB444_0		0x4
+#define DUMB12_RGB444_1		0x5
+#define DUMB24_RGB888_0		0x6
+#define DUMB_BLANK		0x7
+
+/*
+ * defined for Configure I/O Pin Allocation Mode
+ * LCD LCD I/O Pads control register bit[3:0]
+ */
+#define IOPAD_DUMB24		0x0
+#define IOPAD_DUMB18SPI		0x1
+#define IOPAD_DUMB18GPIO	0x2
+#define IOPAD_DUMB16SPI		0x3
+#define IOPAD_DUMB16GPIO	0x4
+#define IOPAD_DUMB12		0x5
+#define IOPAD_SMART18SPI	0x6
+#define IOPAD_SMART16SPI	0x7
+#define IOPAD_SMART8BOTH	0x8
+
+/*
+ * clock source SCLK_Source bit[31:30]
+ */
+#define SCLK_SRC_AXI 0
+#define SCLK_SRC_EXTCLK0 1
+#define SCLK_SRC_PLLDIV 2
+#define SCLK_SRC_EXTCLK1 3
+
+/*
+ * defined Dumb Panel Clock Divider register
+ * SCLK_Source bit[31]
+ */
+#define AXI_BUS_SEL		0x80000000	/* 0: PLL clock select*/
+#define CCD_CLK_SEL		0x40000000
+#define DCON_CLK_SEL		0x20000000
+#define IDLE_CLK_INT_DIV	0x1		/* idle Integer Divider */
+#define DIS_CLK_INT_DIV		0x0		/* Disable Integer Divider */
+
+/* SRAM ID */
+#define SRAMID_GAMMA_YR		0x0
+#define SRAMID_GAMMA_UG		0x1
+#define SRAMID_GAMMA_VB		0x2
+#define SRAMID_PALETTE		0x3
+#define SRAMID_HWC32_RAM1	0xc
+#define SRAMID_HWC32_RAM2	0xd
+#define SRAMID_HWC32_RAM3	0xe
+#define SRAMID_HWC		0xf
+
+/* SRAM INIT Read/Write */
+#define SRAMID_INIT_READ	0x0
+#define SRAMID_INIT_WRITE	0x2
+#define SRAMID_INIT_DEFAULT	0x3
+
+/*
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Signature · 8 lines

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/

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