[U-Boot] [PATCH 2/2] mx6qsabreauto: Add splash screen support

[Stefano Babic]

Hi Fabio,

On 27/01/2014 17:05, Fabio Estevam wrote:
> 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;
> +}

I think this is the fourth copy of the same function. We need to move it
to a common place instead of copying.

Best regards,
Stefano Babic


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