[U-Boot] [PATCH V5 REPOST 3/7] lcd: calculate line_length after lcd_ctrl_init()
Albert ARIBAUD
albert.u.boot at aribaud.net
Wed Mar 20 16:46:48 CET 2013
Hi Stephen,
On Tue, 15 Jan 2013 19:26:55 -0700, Stephen Warren
<swarren at wwwdotorg.org> wrote:
> When an LCD driver is actually driving a regular external display, e.g.
> an HDMI monitor, the display resolution might not be known until the
> display controller has initialized, i.e. during lcd_ctrl_init(). However,
> lcd.c calculates lcd_line_length before calling this function, thus
> relying on a hard-coded resolution in struct panel_info.
>
> Instead, defer this calculation until after lcd_ctrl_init() has had the
> chance to dynamically determine the resolution. This needs to happen
> before lcd_clear(), since the value is used there.
>
> grep indicates that no code outside lcd.c uses this lcd_line_length; in
> particular, no lcd_ctrl_init() implementations read it.
>
> Signed-off-by: Stephen Warren <swarren at wwwdotorg.org>
> Acked-by: Anatolij Gustschin <agust at denx.de>
> --
> v5: No change; merged patch series.
> v4: Adjusted to addition of lcd_get_size() function. Rebased.
> v3: No change.
> ---
> common/lcd.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/common/lcd.c b/common/lcd.c
> index 66d4f94..9fa4e5c 100644
> --- a/common/lcd.c
> +++ b/common/lcd.c
> @@ -384,8 +384,6 @@ int drv_lcd_init (void)
>
> lcd_base = (void *)(gd->fb_base);
>
> - lcd_get_size(&lcd_line_length);
> -
> lcd_init(lcd_base); /* LCD initialization */
>
> /* Device initialization */
> @@ -468,6 +466,8 @@ static int lcd_init(void *lcdbase)
> debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
>
> lcd_ctrl_init(lcdbase);
> + lcd_get_size(&lcd_line_length);
> + lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
> lcd_is_enabled = 1;
> lcd_clear();
> lcd_enable ();
Applied to u-boot-arm/master, thanks!
Amicalement,
--
Albert.
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