[U-Boot] [PATCH 2/2] mx6qsabreauto: Add splash screen support
Fabio Estevam
fabio.estevam at freescale.com
Mon Jan 27 17:05:48 CET 2014
Allow the splash screen to work on LVDS or HDMI.
Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
board/freescale/mx6qsabreauto/mx6qsabreauto.c | 195 ++++++++++++++++++++++++++
include/configs/mx6qsabreauto.h | 16 +++
2 files changed, 211 insertions(+)
diff --git a/board/freescale/mx6qsabreauto/mx6qsabreauto.c b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
index 928dadf..44fc71a 100644
--- a/board/freescale/mx6qsabreauto/mx6qsabreauto.c
+++ b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
@@ -23,6 +23,10 @@
#include <netdev.h>
#include <asm/arch/sys_proto.h>
#include <i2c.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <asm/arch/crm_regs.h>
+#include <linux/fb.h>
+#include <ipu_pixfmt.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -43,6 +47,8 @@ DECLARE_GLOBAL_DATA_PTR;
#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+#define LVDS_BACKLIGHT IMX_GPIO_NR(2, 9)
+
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -132,6 +138,10 @@ iomux_v3_cfg_t const usdhc3_pads[] = {
MX6_PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
+static iomux_v3_cfg_t const backlight[] = {
+ MX6_PAD_SD4_DAT1__GPIO2_IO09 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+};
+
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads));
@@ -190,6 +200,186 @@ 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 int detect_hdmi(struct display_info_t const *dev)
+{
+ struct hdmi_regs *hdmi = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
+ return readb(&hdmi->phy_stat0) & HDMI_DVI_STAT;
+}
+
+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;
+ writel(reg, &iomux->gpr[2]);
+}
+
+static void do_enable_hdmi(struct display_info_t const *dev)
+{
+ disable_lvds(dev);
+ imx_enable_hdmi_phy();
+}
+
+static void enable_lvds(struct display_info_t const *dev)
+{
+ struct iomuxc *iomux = (struct iomuxc *)
+ IOMUXC_BASE_ADDR;
+ u32 reg = readl(&iomux->gpr[2]);
+ reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT;
+ writel(reg, &iomux->gpr[2]);
+}
+
+static struct display_info_t const displays[] = {{
+ .bus = -1,
+ .addr = 0,
+ .pixfmt = IPU_PIX_FMT_RGB666,
+ .detect = NULL,
+ .enable = enable_lvds,
+ .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 = detect_hdmi,
+ .enable = do_enable_hdmi,
+ .mode = {
+ .name = "HDMI",
+ .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
+} } };
+
+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) {
+ 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;
+}
+
+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;
+
+ enable_ipu_clock();
+ imx_setup_hdmi();
+
+ /* Turn on LDB0, LDB1, IPU,IPU DI0 clocks */
+ reg = readl(&mxc_ccm->CCGR3);
+ reg |= MXC_CCM_CCGR3_LDB_DI0_MASK;
+ writel(reg, &mxc_ccm->CCGR3);
+
+ /* set LDB0, LDB1 clk select to 011/011 */
+ reg = readl(&mxc_ccm->cs2cdr);
+ reg &= ~MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK;
+ reg |= (3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET);
+ writel(reg, &mxc_ccm->cs2cdr);
+
+ reg = readl(&mxc_ccm->cscmr2);
+ reg |= MXC_CCM_CSCMR2_LDB_DI0_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);
+ writel(reg, &mxc_ccm->chsccdr);
+
+ reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
+ | IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
+ | IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
+ | IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
+ | IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
+ writel(reg, &iomux->gpr[2]);
+
+ reg = readl(&iomux->gpr[3]);
+ reg = (reg & ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK
+ | IOMUXC_GPR3_HDMI_MUX_CTL_MASK))
+ | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
+ << IOMUXC_GPR3_LVDS1_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();
@@ -238,6 +428,11 @@ int board_early_init_f(void)
{
setup_iomux_uart();
+#if defined(CONFIG_VIDEO_IPUV3)
+ imx_iomux_v3_setup_multiple_pads(backlight, ARRAY_SIZE(backlight));
+ gpio_direction_output(LVDS_BACKLIGHT, 1);
+ setup_display();
+#endif
return 0;
}
diff --git a/include/configs/mx6qsabreauto.h b/include/configs/mx6qsabreauto.h
index dbbb6f0..95c0803 100644
--- a/include/configs/mx6qsabreauto.h
+++ b/include/configs/mx6qsabreauto.h
@@ -41,4 +41,20 @@
#define CONFIG_SYS_I2C_MXC
#define CONFIG_SYS_I2C_SPEED 100000
+/* Framebuffer */
+#define CONFIG_VIDEO
+#define CONFIG_VIDEO_IPUV3
+#define CONFIG_CFB_CONSOLE
+#define CONFIG_VGA_AS_SINGLE_DEVICE
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
+#define CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
+#define CONFIG_VIDEO_BMP_RLE8
+#define CONFIG_SPLASH_SCREEN
+#define CONFIG_SPLASH_SCREEN_ALIGN
+#define CONFIG_BMP_16BPP
+#define CONFIG_VIDEO_LOGO
+#define CONFIG_VIDEO_BMP_LOGO
+#define CONFIG_IPUV3_CLK 260000000
+#define CONFIG_IMX_HDMI
+
#endif /* __MX6QSABREAUTO_CONFIG_H */
--
1.8.1.2
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