ENGR00315894-38 MX6 Sabreauto:Add IPUv3 splash screen support

This patch adds IPUv3 splash screen support for the MX6Q/SDL
Sabreauto platforms. The default display is the Hannstar-XGA
LVDS panel. Users may set the uboot variable 'panel' to be
'HDMI' to switch to use HDMI splash screen. To avoid duplicate
configures on different sabre platforms, this patch moves
the IPUv3 splash screen relevant configures to the head file
'mx6qsabre_common.h'. Also, this patch modifies the condition
to build in EPDC splash screen feature in order to avoid the
build break due to the migration of the IPUv3 splash screen
relevant configures.

Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Signed-off-by: Ye.Li <B37916@freescale.com>

1 files changed, 201 insertions, 0 deletions

diff --git a/board/freescale/mx6qsabreauto/mx6qsabreauto.c b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
index 0c592fe..0fd9e77 100644
--- a/board/freescale/mx6qsabreauto/mx6qsabreauto.c
+++ b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
@@ -23,6 +23,10 @@
 #include <miiphy.h>
 #include <netdev.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
+
 #include <i2c.h>
 
 #ifdef CONFIG_CMD_SATA
@@ -553,6 +557,199 @@ int board_phy_config(struct phy_device *phydev)
 	return 0;
 }
 
+#if defined(CONFIG_VIDEO_IPUV3)
+struct display_info_t {
+	int	bus;
+	int	addr;
+	int	pixfmt;
+	int	(*detect)(struct display_info_t const *dev);
+	void	(*enable)(struct display_info_t const *dev);
+	struct	fb_videomode mode;
+};
+
+static void disable_lvds(struct display_info_t const *dev)
+{
+	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+	int reg = readl(&iomux->gpr[2]);
+
+	reg &= ~(IOMUXC_GPR2_LVDS_CH0_MODE_MASK |
+		 IOMUXC_GPR2_LVDS_CH1_MODE_MASK);
+
+	writel(reg, &iomux->gpr[2]);
+}
+
+static void do_enable_hdmi(struct display_info_t const *dev)
+{
+	disable_lvds(dev);
+	imx_enable_hdmi_phy();
+}
+
+static struct display_info_t const displays[] = {{
+	.bus	= -1,
+	.addr	= 0,
+	.pixfmt	= IPU_PIX_FMT_RGB666,
+	.detect	= NULL,
+	.enable	= NULL,
+	.mode	= {
+		.name           = "Hannstar-XGA",
+		.refresh        = 60,
+		.xres           = 1024,
+		.yres           = 768,
+		.pixclock       = 15385,
+		.left_margin    = 220,
+		.right_margin   = 40,
+		.upper_margin   = 21,
+		.lower_margin   = 7,
+		.hsync_len      = 60,
+		.vsync_len      = 10,
+		.sync           = FB_SYNC_EXT,
+		.vmode          = FB_VMODE_NONINTERLACED
+} }, {
+	.bus	= -1,
+	.addr	= 0,
+	.pixfmt	= IPU_PIX_FMT_RGB24,
+	.detect	= NULL,
+	.enable	= do_enable_hdmi,
+	.mode	= {
+		.name           = "HDMI",
+		.refresh        = 60,
+		.xres           = 640,
+		.yres           = 480,
+		.pixclock       = 39721,
+		.left_margin    = 48,
+		.right_margin   = 16,
+		.upper_margin   = 33,
+		.lower_margin   = 10,
+		.hsync_len      = 96,
+		.vsync_len      = 2,
+		.sync           = 0,
+		.vmode          = FB_VMODE_NONINTERLACED
+} } };
+
+int board_video_skip(void)
+{
+	int i;
+	int ret;
+	char const *panel = getenv("panel");
+
+	if (!panel) {
+		for (i = 0; i < ARRAY_SIZE(displays); i++) {
+			struct display_info_t const *dev = displays+i;
+			if (dev->detect && dev->detect(dev)) {
+				panel = dev->mode.name;
+				printf("auto-detected panel %s\n", panel);
+				break;
+			}
+		}
+		if (!panel) {
+			panel = displays[0].mode.name;
+			printf("No panel detected: default to %s\n", panel);
+			i = 0;
+		}
+	} else {
+		for (i = 0; i < ARRAY_SIZE(displays); i++) {
+			if (!strcmp(panel, displays[i].mode.name))
+				break;
+		}
+	}
+
+	if (i < ARRAY_SIZE(displays)) {
+		ret = ipuv3_fb_init(&displays[i].mode, 0,
+				    displays[i].pixfmt);
+		if (!ret) {
+			if (displays[i].enable)
+				displays[i].enable(displays+i);
+			printf("Display: %s (%ux%u)\n",
+			       displays[i].mode.name,
+			       displays[i].mode.xres,
+			       displays[i].mode.yres);
+		} else
+			printf("LCD %s cannot be configured: %d\n",
+			       displays[i].mode.name, ret);
+	} else {
+		printf("unsupported panel %s\n", panel);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+iomux_v3_cfg_t const backlight_pads[] = {
+	MX6_PAD_SD4_DAT1__GPIO2_IO09 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
+static void setup_iomux_backlight(void)
+{
+	gpio_direction_output(IMX_GPIO_NR(2, 9), 1);
+	imx_iomux_v3_setup_multiple_pads(backlight_pads,
+					 ARRAY_SIZE(backlight_pads));
+}
+
+static void setup_display(void)
+{
+	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+	int reg;
+
+	setup_iomux_backlight();
+	enable_ipu_clock();
+	imx_setup_hdmi();
+
+	/* Turn on LDB_DI0 and LDB_DI1 clocks */
+	reg = readl(&mxc_ccm->CCGR3);
+	reg |= MXC_CCM_CCGR3_LDB_DI0_MASK | MXC_CCM_CCGR3_LDB_DI1_MASK;
+	writel(reg, &mxc_ccm->CCGR3);
+
+	/* Set LDB_DI0 and LDB_DI1 clk select to 3b'011 */
+	reg = readl(&mxc_ccm->cs2cdr);
+	reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK |
+		 MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
+	reg |= (3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET) |
+	       (3 << MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
+	writel(reg, &mxc_ccm->cs2cdr);
+
+	reg = readl(&mxc_ccm->cscmr2);
+	reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV | MXC_CCM_CSCMR2_LDB_DI1_IPU_DIV;
+	writel(reg, &mxc_ccm->cscmr2);
+
+	reg = readl(&mxc_ccm->chsccdr);
+	reg |= (CHSCCDR_CLK_SEL_LDB_DI0 <<
+		MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
+	reg |= (CHSCCDR_CLK_SEL_LDB_DI0 <<
+		MXC_CCM_CHSCCDR_IPU1_DI1_CLK_SEL_OFFSET);
+	writel(reg, &mxc_ccm->chsccdr);
+
+	reg = IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_LOW |
+	      IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW |
+	      IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG |
+	      IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT |
+	      IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
+	      IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT |
+	      IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0 |
+	      IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED;
+	writel(reg, &iomux->gpr[2]);
+
+	reg = readl(&iomux->gpr[3]);
+	reg &= ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK |
+		 IOMUXC_GPR3_HDMI_MUX_CTL_MASK);
+	reg |= (IOMUXC_GPR3_MUX_SRC_IPU1_DI0 <<
+		IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET) |
+	       (IOMUXC_GPR3_MUX_SRC_IPU1_DI0 <<
+		IOMUXC_GPR3_HDMI_MUX_CTL_OFFSET);
+	writel(reg, &iomux->gpr[3]);
+}
+#endif /* CONFIG_VIDEO_IPUV3 */
+
+/*
+ * Do not overwrite the console
+ * Use always serial for U-Boot console
+ */
+int overwrite_console(void)
+{
+	return 1;
+}
+
 int board_eth_init(bd_t *bis)
 {
 	setup_iomux_enet();
@@ -601,6 +798,10 @@ int board_early_init_f(void)
 {
 	setup_iomux_uart();
 
+#if defined(CONFIG_VIDEO_IPUV3)
+	setup_display();
+#endif
+
 #ifdef CONFIG_SYS_USE_SPINOR
 	setup_spinor();
 #endif