Previously, we used to statically assign values for vl_col, vl_row and vl_bpix using #defines like LCD_XRES, LCD_YRES and LCD_COLOR16.
Introducing the function exynos_lcd_early_init() would take care of this assignment on the fly by parsing FIMD DT properties, thereby allowing us to remove LCD_XRES and LCD_YRES from the main config file.
Signed-off-by: Ajay Kumar ajaykumar.rs@samsung.com --- arch/arm/include/asm/arch-exynos/system.h | 1 + board/samsung/common/board.c | 15 +++++++++++++++ drivers/video/exynos_fb.c | 20 ++++++-------------- include/configs/exynos5250-dt.h | 2 -- 4 files changed, 22 insertions(+), 16 deletions(-)
diff --git a/arch/arm/include/asm/arch-exynos/system.h b/arch/arm/include/asm/arch-exynos/system.h index 7e2057c..4968d3d 100644 --- a/arch/arm/include/asm/arch-exynos/system.h +++ b/arch/arm/include/asm/arch-exynos/system.h @@ -39,5 +39,6 @@ struct exynos5_sysreg {
void set_usbhost_mode(unsigned int mode); void set_system_display_ctrl(void); +int exynos_lcd_early_init(const void *blob);
#endif /* _EXYNOS4_SYSTEM_H */ diff --git a/board/samsung/common/board.c b/board/samsung/common/board.c index ce85ddb..ae89c94 100644 --- a/board/samsung/common/board.c +++ b/board/samsung/common/board.c @@ -17,6 +17,7 @@ #include <asm/arch/gpio.h> #include <asm/arch/pinmux.h> #include <asm/arch/power.h> +#include <asm/arch/system.h> #include <power/pmic.h> #include <power/max77686_pmic.h>
@@ -130,6 +131,20 @@ int board_early_init_f(void) #ifdef CONFIG_SYS_I2C_INIT_BOARD board_i2c_init(gd->fdt_blob); #endif + +#if defined(CONFIG_OF_CONTROL) && defined(CONFIG_EXYNOS_FB) +/* + * board_init_f(arch/arm/lib/board.c) calls lcd_setmem() which needs + * panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix, to reserve + * FB memory at a very early stage. So, we need to fill panel_info.vl_col, + * panel_info.vl_row and panel_info.vl_bpix before lcd_setmem() is called. + */ + err = exynos_lcd_early_init(gd->fdt_blob); + if (err) { + debug("LCD early init failed\n"); + return err; + } +#endif return err; } #endif diff --git a/drivers/video/exynos_fb.c b/drivers/video/exynos_fb.c index 5c7ec91..686870f 100644 --- a/drivers/video/exynos_fb.c +++ b/drivers/video/exynos_fb.c @@ -27,17 +27,12 @@ DECLARE_GLOBAL_DATA_PTR;
static unsigned int panel_width, panel_height;
-/* - * board_init_f(arch/arm/lib/board.c) calls lcd_setmem() which needs - * panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix to reserve - * FB memory at a very early stage, i.e even before exynos_fimd_parse_dt() - * is called. So, we are forced to statically assign it. - */ #ifdef CONFIG_OF_CONTROL vidinfo_t panel_info = { - .vl_col = LCD_XRES, - .vl_row = LCD_YRES, - .vl_bpix = LCD_COLOR16, + /* Insert a value here so that we don't end up in the BSS + * Reference: drivers/video/tegra.c + */ + .vl_col = -1, }; #endif
@@ -159,7 +154,7 @@ static void lcd_panel_on(vidinfo_t *vid) }
#ifdef CONFIG_OF_CONTROL -int exynos_fimd_parse_dt(const void *blob) +int exynos_lcd_early_init(const void *blob) { unsigned int node; node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_FIMD); @@ -303,10 +298,7 @@ void lcd_ctrl_init(void *lcdbase) set_system_display_ctrl(); set_lcd_clk();
-#ifdef CONFIG_OF_CONTROL - if (exynos_fimd_parse_dt(gd->fdt_blob)) - debug("Can't get proper panel info\n"); -#else +#ifndef CONFIG_OF_CONTROL /* initialize parameters which is specific to panel. */ init_panel_info(&panel_info); #endif diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h index 689919d..508962c 100644 --- a/include/configs/exynos5250-dt.h +++ b/include/configs/exynos5250-dt.h @@ -50,8 +50,6 @@ #ifdef CONFIG_LCD #define CONFIG_EXYNOS_FB #define CONFIG_EXYNOS_DP -#define LCD_XRES 2560 -#define LCD_YRES 1600 #define LCD_BPP LCD_COLOR16 #endif #endif /* __CONFIG_5250_H */