Add splash screen for CM-T35

index ffaffbb..0cbef84 100644
@@ -167,6 +167,36 @@ struct venc_regs {
 #define VENC_OUT_SEL				(1 << 6)
 #define DIG_LPP_SHIFT				16
 
+/* LCD display type */
+#define PASSIVE_DISPLAY			0
+#define ACTIVE_DISPLAY			1
+
+/* TFTDATALINES */
+#define LCD_INTERFACE_12_BIT	0
+#define LCD_INTERFACE_16_BIT	1
+#define LCD_INTERFACE_18_BIT	2
+#define LCD_INTERFACE_24_BIT	3
+
+/* Polarity */
+#define DSS_IVS	(1 << 12)
+#define DSS_IHS	(1 << 13)
+#define DSS_IPC	(1 << 14)
+#define DSS_IEO	(1 << 15)
+
+/* GFX format */
+#define GFXFORMAT_BITMAP1		(0x0 << 1)
+#define GFXFORMAT_BITMAP2		(0x1 << 1)
+#define GFXFORMAT_BITMAP4		(0x2 << 1)
+#define GFXFORMAT_BITMAP8		(0x3 << 1)
+#define GFXFORMAT_RGB12			(0x4 << 1)
+#define GFXFORMAT_ARGB16		(0x5 << 1)
+#define GFXFORMAT_RGB16			(0x6 << 1)
+#define GFXFORMAT_RGB24_UNPACKED	(0x8 << 1)
+#define GFXFORMAT_RGB24_PACKED		(0x9 << 1)
+#define GFXFORMAT_ARGB32		(0xC << 1)
+#define GFXFORMAT_RGBA32		(0xD << 1)
+#define GFXFORMAT_RGBx32		(0xE << 1)
+
 /* Panel Configuration */
 struct panel_config {
 	u32 timing_h;

index 0cbef84..ae0babf 100644
@@ -208,6 +208,7 @@ struct panel_config {
 	u32 data_lines;
 	u32 load_mode;
 	u32 panel_color;
+	u32 gfx_format;
 	void *frame_buffer;
 };
 

index 9fe6408..5eda6c4 100644
@@ -130,6 +130,7 @@ static struct panel_config lcd_cfg = {
 	.load_mode      = 0x02, /* Frame Mode */
 	.panel_color	= 0,
 	.lcd_size	= PANEL_LCD_SIZE(800, 480),
+	.gfx_format	= GFXFORMAT_RGB24_UNPACKED,
 };
 
 int board_video_init(void)

index c516c75..78d81d6 100644
@@ -81,6 +81,7 @@ static struct panel_config lcd_cfg[] = {
 	.data_lines     = 0x03, /* 24 Bit RGB */
 	.load_mode      = 0x02, /* Frame Mode */
 	.panel_color	= 0,
+	.gfx_format	= GFXFORMAT_RGB24_UNPACKED,
 	},
 	{
 	.timing_h       = PANEL_TIMING_H(20, 192, 4),

@@ -91,6 +92,7 @@ static struct panel_config lcd_cfg[] = {
 	.data_lines     = 0x03, /* 24 Bit RGB */
 	.load_mode      = 0x02, /* Frame Mode */
 	.panel_color	= 0,
+	.gfx_format	= GFXFORMAT_RGB24_UNPACKED,
 	}
 };
 #endif

index c0a94a9..6d71bbc 100644
@@ -544,7 +544,8 @@ static const struct panel_config dvid_cfg = {
 	.panel_type	= 0x01, /* TFT */
 	.data_lines	= 0x03, /* 24 Bit RGB */
 	.load_mode	= 0x02, /* Frame Mode */
-	.panel_color	= DVI_BEAGLE_ORANGE_COL /* ORANGE */
+	.panel_color	= DVI_BEAGLE_ORANGE_COL, /* ORANGE */
+	.gfx_format	= GFXFORMAT_RGB24_UNPACKED,
 };
 
 static const struct panel_config dvid_cfg_xm = {

@@ -556,6 +557,7 @@ static const struct panel_config dvid_cfg_xm = {
 	.panel_type	= 0x01, /* TFT */
 	.data_lines	= 0x03, /* 24 Bit RGB */
 	.load_mode	= 0x02, /* Frame Mode */
-	.panel_color	= DVI_BEAGLE_ORANGE_COL /* ORANGE */
+	.panel_color	= DVI_BEAGLE_ORANGE_COL, /* ORANGE */
+	.gfx_format	= GFXFORMAT_RGB24_UNPACKED,
 };
 #endif

index b1424bf..6efba12 100644
@@ -121,7 +121,7 @@ void omap3_dss_panel_config(const struct panel_config *panel_cfg)
 	if (!panel_cfg->frame_buffer)
 		return;
 
-	writel(8 << GFX_FORMAT_SHIFT | GFX_ENABLE, &dispc->gfx_attributes);
+	writel(panel_cfg->gfx_format | GFX_ENABLE, &dispc->gfx_attributes);
 	writel(1, &dispc->gfx_row_inc);
 	writel(1, &dispc->gfx_pixel_inc);
 	writel(panel_cfg->lcd_size, &dispc->gfx_size);

index 66d4f94..104125d 100644
@@ -1046,6 +1046,14 @@ static void *lcd_logo(void)
 		do_splash = 0;
 
 		addr = simple_strtoul (s, NULL, 16);
+		/*
+		 * In order for the fields of bmp header to be properly aligned
+		 * in memory, splash image addr must be aligned to "aligned
+		 * address plus 2". Fix addr if necessary.
+		 */
+		if (addr % 4 != 2)
+			addr += (addr % 4) ?: 2;
+
 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
 		s = getenv("splashpos");
 		if (s != NULL) {

index 104125d..bb8a7d2 100644
@@ -1034,6 +1034,18 @@ int lcd_display_bitmap(ulong bmp_image, int x, int y)
 }
 #endif
 
+#ifdef CONFIG_SPLASH_SCREEN_PREPARE
+static inline int splash_screen_prepare(void)
+{
+	return board_splash_screen_prepare();
+}
+#else
+static inline int splash_screen_prepare(void)
+{
+	return 0;
+}
+#endif
+
 static void *lcd_logo(void)
 {
 #ifdef CONFIG_SPLASH_SCREEN

@@ -1045,6 +1057,9 @@ static void *lcd_logo(void)
 		int x = 0, y = 0;
 		do_splash = 0;
 
+		if (splash_screen_prepare())
+			return (void *)gd->fb_base;
+
 		addr = simple_strtoul (s, NULL, 16);
 		/*
 		 * In order for the fields of bmp header to be properly aligned

index c24164a..4ac4ddd 100644
@@ -47,6 +47,7 @@ extern struct vidinfo panel_info;
 
 extern void lcd_ctrl_init (void *lcdbase);
 extern void lcd_enable (void);
+extern int board_splash_screen_prepare(void);
 
 /* setcolreg used in 8bpp/16bpp; initcolregs used in monochrome */
 extern void lcd_setcolreg (ushort regno,

index edbb941..8f3d735 100644
@@ -216,6 +216,9 @@ static void cm_t3x_set_common_muxconf(void)
 	/* SB-T35 Ethernet */
 	MUX_VAL(CP(GPMC_NCS4),		(IEN  | PTU | EN  | M0)); /*GPMC_nCS4*/
 
+	/* DVI enable */
+	MUX_VAL(CP(GPMC_NCS3),		(IDIS  | PTU | DIS  | M4));/*GPMC_nCS3*/
+
 	/* CM-T3x Ethernet */
 	MUX_VAL(CP(GPMC_NCS5),		(IDIS | PTU | DIS | M0)); /*GPMC_nCS5*/
 	MUX_VAL(CP(GPMC_CLK),		(IEN  | PTD | DIS | M4)); /*GPIO_59*/

220 lines not on this page · raw message

index 7d07215..46d35ba 100644
@@ -338,4 +338,11 @@
 #define CONFIG_OMAP3_GPIO_6	/* GPIO186 is in GPIO bank 6  */
 #endif
 
+/* Display Configuration */
+#define CONFIG_OMAP3_GPIO_2
+#define CONFIG_VIDEO_OMAP3
+#define LCD_BPP		LCD_COLOR16
+
+#define CONFIG_LCD
+
 #endif /* __CONFIG_H */

index 43f0628..2f78bad 100644
@@ -3,6 +3,8 @@
  *
  * Authors: Nikita Kiryanov <[email protected]>
  *
+ * Parsing code based on linux/drivers/video/pxafb.c
+ *
  * See file CREDITS for list of people who contributed to this
  * project.
  *

@@ -33,6 +35,7 @@ DECLARE_GLOBAL_DATA_PTR;
 enum display_type {
 	NONE,
 	DVI,
+	DVI_CUSTOM,
 };
 
 #define CMAP_ADDR	0x80100000

@@ -152,6 +155,206 @@ static enum display_type set_dvi_preset(const struct panel_config preset,
 }
 
 /*
+ * parse_mode() - parse the mode parameter of custom lcd settings
+ *
+ * @mode:	<res_x>x<res_y>
+ *
+ * Returns -1 on error, 0 on success.
+ */
+static int parse_mode(const char *mode)
+{
+	unsigned int modelen = strlen(mode);
+	int res_specified = 0;
+	unsigned int xres = 0, yres = 0;
+	int yres_specified = 0;
+	int i;
+
+	for (i = modelen - 1; i >= 0; i--) {
+		switch (mode[i]) {
+		case 'x':
+			if (!yres_specified) {
+				yres = simple_strtoul(&mode[i + 1], NULL, 0);
+				yres_specified = 1;
+			} else {
+				goto done_parsing;
+			}
+
+			break;
+		case '0' ... '9':
+			break;
+		default:
+			goto done_parsing;
+		}
+	}
+
+	if (i < 0 && yres_specified) {
+		xres = simple_strtoul(mode, NULL, 0);
+		res_specified = 1;
+	}
+
+done_parsing:
+	if (res_specified) {
+		set_resolution_params(xres, yres);
+	} else {
+		printf("LCD: invalid mode: %s\n", mode);
+		return -1;
+	}
+
+	return 0;
+}
+
+#define PIXEL_CLK_NUMERATOR (26 * 432 / 39)
+/*
+ * parse_pixclock() - Parse the pixclock parameter of custom lcd settings
+ *
+ * @pixclock:	the desired pixel clock
+ *
+ * Returns -1 on error, 0 on success.
+ *
+ * Handling the pixel_clock:
+ *
+ * Pixel clock is defined in the OMAP35x TRM as follows:
+ * pixel_clock =
+ * (SYS_CLK * 2 * PRCM.CM_CLKSEL2_PLL[18:8]) /
+ * (DSS.DISPC_DIVISOR[23:16] * DSS.DISPC_DIVISOR[6:0] *
+ * PRCM.CM_CLKSEL_DSS[4:0] * (PRCM.CM_CLKSEL2_PLL[6:0] + 1))
+ *
+ * In practice, this means that in order to set the
+ * divisor for the desired pixel clock one needs to
+ * solve the following equation:
+ *
+ * 26 * 432 / (39 * <pixel_clock>) = DSS.DISPC_DIVISOR[6:0]
+ *
+ * NOTE: the explicit equation above is reduced. Do not
+ * try to infer anything from these numbers.
+ */
+static int parse_pixclock(char *pixclock)
+{
+	int divisor, pixclock_val;
+	char *pixclk_start = pixclock;
+
+	pixclock_val = simple_strtoul(pixclock, &pixclock, 10);
+	divisor = DIV_ROUND_UP(PIXEL_CLK_NUMERATOR, pixclock_val);
+	/* 0 and 1 are illegal values for PCD */
+	if (divisor <= 1)
+		divisor = 2;
+
+	panel_cfg.divisor = divisor | (1 << 16);
+	if (pixclock[0] != '\0') {
+		printf("LCD: invalid value for pixclock:%s\n", pixclk_start);
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * parse_setting() - parse a single setting of custom lcd parameters
+ *
+ * @setting:	The custom lcd setting <name>:<value>
+ *
+ * Returns -1 on failure, 0 on success.
+ */
+static int parse_setting(char *setting)
+{
+	int num_val;
+	char *setting_start = setting;
+
+	if (!strncmp(setting, "mode:", 5)) {
+		return parse_mode(setting + 5);
+	} else if (!strncmp(setting, "pixclock:", 9)) {
+		return parse_pixclock(setting + 9);
+	} else if (!strncmp(setting, "left:", 5)) {
+		num_val = simple_strtoul(setting + 5, &setting, 0);
+		panel_cfg.timing_h |= DSS_HBP(num_val);
+	} else if (!strncmp(setting, "right:", 6)) {
+		num_val = simple_strtoul(setting + 6, &setting, 0);
+		panel_cfg.timing_h |= DSS_HFP(num_val);
+	} else if (!strncmp(setting, "upper:", 6)) {
+		num_val = simple_strtoul(setting + 6, &setting, 0);
+		panel_cfg.timing_v |= DSS_VBP(num_val);
+	} else if (!strncmp(setting, "lower:", 6)) {
+		num_val = simple_strtoul(setting + 6, &setting, 0);
+		panel_cfg.timing_v |= DSS_VFP(num_val);
+	} else if (!strncmp(setting, "hsynclen:", 9)) {
+		num_val = simple_strtoul(setting + 9, &setting, 0);
+		panel_cfg.timing_h |= DSS_HSW(num_val);
+	} else if (!strncmp(setting, "vsynclen:", 9)) {
+		num_val = simple_strtoul(setting + 9, &setting, 0);
+		panel_cfg.timing_v |= DSS_VSW(num_val);
+	} else if (!strncmp(setting, "hsync:", 6)) {
+		if (simple_strtoul(setting + 6, &setting, 0) == 0)
+			panel_cfg.pol_freq |= DSS_IHS;
+		else
+			panel_cfg.pol_freq &= ~DSS_IHS;
+	} else if (!strncmp(setting, "vsync:", 6)) {
+		if (simple_strtoul(setting + 6, &setting, 0) == 0)
+			panel_cfg.pol_freq |= DSS_IVS;
+		else
+			panel_cfg.pol_freq &= ~DSS_IVS;
+	} else if (!strncmp(setting, "outputen:", 9)) {
+		if (simple_strtoul(setting + 9, &setting, 0) == 0)
+			panel_cfg.pol_freq |= DSS_IEO;
+		else
+			panel_cfg.pol_freq &= ~DSS_IEO;
+	} else if (!strncmp(setting, "pixclockpol:", 12)) {
+		if (simple_strtoul(setting + 12, &setting, 0) == 0)
+			panel_cfg.pol_freq |= DSS_IPC;
+		else
+			panel_cfg.pol_freq &= ~DSS_IPC;
+	} else if (!strncmp(setting, "active", 6)) {
+		panel_cfg.panel_type = ACTIVE_DISPLAY;
+		return 0; /* Avoid sanity check below */
+	} else if (!strncmp(setting, "passive", 7)) {
+		panel_cfg.panel_type = PASSIVE_DISPLAY;
+		return 0; /* Avoid sanity check below */
+	} else if (!strncmp(setting, "display:", 8)) {
+		if (!strncmp(setting + 8, "dvi", 3)) {
+			lcd_def = DVI_CUSTOM;
+			return 0; /* Avoid sanity check below */
+		}
+	} else {
+		printf("LCD: unknown option %s\n", setting_start);
+		return -1;
+	}
+
+	if (setting[0] != '\0') {
+		printf("LCD: invalid value for %s\n", setting_start);
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * env_parse_customlcd() - parse custom lcd params from an environment variable.
+ *
+ * @custom_lcd_params:	The environment variable containing the lcd params.
+ *
+ * Returns -1 on failure, 0 on success.
+ */
+static int parse_customlcd(char *custom_lcd_params)
+{
+	char params_cpy[160];
+	char *setting;
+
+	strncpy(params_cpy, custom_lcd_params, 160);
+	setting = strtok(params_cpy, ",");
+	while (setting) {
+		if (parse_setting(setting) < 0)
+			return -1;
+
+		setting = strtok(NULL, ",");
+	}
+
+	/* Currently we don't support changing this via custom lcd params */
+	panel_cfg.data_lines = LCD_INTERFACE_24_BIT;
+	panel_cfg.gfx_format = GFXFORMAT_RGB16; /* See dvi predefines note */
+
+	return 0;
+}
+
+/*
  * env_parse_displaytype() - parse display type.
  *
  * Parses the environment variable "displaytype", which contains the

@@ -189,14 +392,19 @@ void *lcd_console_address;
 void lcd_ctrl_init(void *lcdbase)
 {
 	struct prcm *prcm = (struct prcm *)PRCM_BASE;
+	char *custom_lcd;
 	char *displaytype = getenv("displaytype");
 
 	if (displaytype == NULL)
 		return;
 
 	lcd_def = env_parse_displaytype(displaytype);
-	if (lcd_def == NONE)
-		return;
+	/* If we did not recognize the preset, check if it's an env variable */
+	if (lcd_def == NONE) {
+		custom_lcd = getenv(displaytype);
+		if (custom_lcd == NULL || parse_customlcd(custom_lcd) < 0)
+			return;
+	}
 
 	panel_cfg.frame_buffer = lcdbase;
 	omap3_dss_panel_config(&panel_cfg);

@@ -211,7 +419,7 @@ void lcd_ctrl_init(void *lcdbase)
 
 void lcd_enable(void)
 {
-	if (lcd_def == DVI) {
+	if (lcd_def == DVI || lcd_def == DVI_CUSTOM) {
 		gpio_direction_output(54, 0); /* Turn on DVI */
 		omap3_dss_enable();
 	}

index 8f3d735..5fd71f9 100644
@@ -33,7 +33,9 @@
 #include <net.h>
 #include <i2c.h>
 #include <usb.h>
+#include <nand.h>
 #include <twl4030.h>
+#include <bmp_layout.h>
 #include <linux/compiler.h>
 
 #include <asm/io.h>

@@ -75,6 +77,69 @@ static u32 gpmc_nand_config[GPMC_MAX_REG] = {
 	0,
 };
 
+#ifdef CONFIG_LCD
+#ifdef CONFIG_CMD_NAND
+static int splash_load_from_nand(u32 bmp_load_addr)
+{
+	struct bmp_header *bmp_hdr;
+	int res, splash_screen_nand_offset = 0x100000;
+	size_t bmp_size, bmp_header_size = sizeof(struct bmp_header);
+
+	if (bmp_load_addr + bmp_header_size >= gd->start_addr_sp)
+		goto splash_address_too_high;
+
+	res = nand_read_skip_bad(&nand_info[nand_curr_device],
+			splash_screen_nand_offset, &bmp_header_size,
+			(u_char *)bmp_load_addr);
+	if (res < 0)
+		return res;
+
+	bmp_hdr = (struct bmp_header *)bmp_load_addr;
+	bmp_size = le32_to_cpu(bmp_hdr->file_size);
+
+	if (bmp_load_addr + bmp_size >= gd->start_addr_sp)
+		goto splash_address_too_high;
+
+	return nand_read_skip_bad(&nand_info[nand_curr_device],
+			splash_screen_nand_offset, &bmp_size,
+			(u_char *)bmp_load_addr);
+
+splash_address_too_high:
+	printf("Error: splashimage address too high. Data overwrites U-Boot "
+		"and/or placed beyond DRAM boundaries.\n");
+
+	return -1;
+}
+#else
+static inline int splash_load_from_nand(void)
+{
+	return -1;
+}
+#endif /* CONFIG_CMD_NAND */
+
+int board_splash_screen_prepare(void)
+{
+	char *env_splashimage_value;
+	u32 bmp_load_addr;
+
+	env_splashimage_value = getenv("splashimage");
+	if (env_splashimage_value == NULL)
+		return -1;
+
+	bmp_load_addr = simple_strtoul(env_splashimage_value, 0, 16);
+	if (bmp_load_addr == 0) {
+		printf("Error: bad splashimage address specified\n");
+		return -1;
+	}
+
+	/* Fix bmp_load_addr to the alignment that lcd.c expects */
+	if (bmp_load_addr % 4 != 2)
+		bmp_load_addr += (bmp_load_addr % 4) ?: 2;
+
+	return splash_load_from_nand(bmp_load_addr);
+}
+#endif /* CONFIG_LCD */
+
 /*
  * Routine: board_init
  * Description: hardware init.

index 46d35ba..53c4e3c 100644
@@ -344,5 +344,9 @@
 #define LCD_BPP		LCD_COLOR16
 
 #define CONFIG_LCD
+#define CONFIG_SPLASH_SCREEN
+#define CONFIG_CMD_BMP
+#define CONFIG_BMP_16BPP
+#define CONFIG_SPLASH_SCREEN_PREPARE
 
 #endif /* __CONFIG_H */