On 12/11/13 21:27, Ajay Kumar wrote:
> 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...@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 cc83724..2536457 100644
> --- a/board/samsung/common/board.c
> +++ b/board/samsung/common/board.c
> @@ -20,6 +20,7 @@
> #include <asm/arch/mmc.h>
> #include <asm/arch/pinmux.h>
> #include <asm/arch/power.h>
> +#include <asm/arch/system.h>
> #include <power/pmic.h>
> #include <asm/arch/sromc.h>
> #include <power/max77686_pmic.h>
> @@ -135,6 +136,20 @@ 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.
> + */
please fix indentation.
> + 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 7d4c6e0..69899a1 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
> + */
wrong comment style.
> + .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 */
>
Thanks,
Minkyu Kang.
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