[U-Boot] [RFC] common/lcd: use lcd_setcolreg() in bitmap_plot
Bo Shen
voice.shen at atmel.com
Mon Oct 29 10:17:24 CET 2012
On 10/26/2012 19:23, Andreas Bießmann wrote:
> The lcd_setcolreg() is a API provided by the lcd driver and used to setup the
> color lookup table. However the lcd driver setup the CLUT by using a lot
> of #ifdiffery and accessing the CLUT arrays which are cleanly hidden by the API
> call. Remove that and use the API.
>
> Signed-off-by: Andreas Bießmann <andreas.devel at googlemail.com>
> Cc: Marek Vasut <marex at denx.de>
> Cc: Bo Shen <voice.shen at atmel.com>
> Cc: Tom Rini <trini at ti.com>
> ---
> This is a RFC currently cause it touches a lot of boards but is only runtime
> tested on at91sam9263ek. Unfortunately a 'MAKEALL -a arm' does break cause the
> atmel_hlcd driver do not provide the required API (lcd_setcolreg()) -> Bo, can
> you please fix this, I do not have an atmel_hlcdc enabled device.
>
> On the other hand this change also touches other architectures I can not test.
> This patch is actually only compile tested for arm and avr32 arches.
>
> And last I have to say that there is another position in this file where the
> CLUT is modified directly by the code. This should also be changed to use the
> lcd_setcolreg API.
>
> This patch shall superseed http://patchwork.ozlabs.org/patch/193466/
>
> common/lcd.c | 47 +++++++++--------------------------------------
> 1 file changed, 9 insertions(+), 38 deletions(-)
Tested on sam9x5ek board. It works well.
Tested-by: Bo Shen <voice.shen at atmel.com>
> diff --git a/common/lcd.c b/common/lcd.c
> index b6be800..4938381 100644
> --- a/common/lcd.c
> +++ b/common/lcd.c
> @@ -523,11 +523,6 @@ static inline ushort *configuration_get_cmap(void)
> #ifdef CONFIG_LCD_LOGO
> void bitmap_plot(int x, int y)
> {
> -#ifdef CONFIG_ATMEL_LCD
> - uint *cmap = (uint *)bmp_logo_palette;
> -#else
> - ushort *cmap = (ushort *)bmp_logo_palette;
> -#endif
> ushort i, j;
> uchar *bmap;
> uchar *fb;
> @@ -545,44 +540,20 @@ void bitmap_plot(int x, int y)
> fb = (uchar *)(lcd_base + y * lcd_line_length + x);
>
> if (NBITS(panel_info.vl_bpix) < 12) {
> - /* Leave room for default color map
> - * default case: generic system with no cmap (most likely 16bpp)
> - * cmap was set to the source palette, so no change is done.
> - * This avoids even more ifdefs in the next stanza
> - */
> -#if defined(CONFIG_MPC823)
> - cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
> -#elif defined(CONFIG_ATMEL_LCD)
> - cmap = (uint *)configuration_get_cmap();
> -#else
> - cmap = configuration_get_cmap();
> -#endif
>
> WATCHDOG_RESET();
>
> /* Set color map */
> for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
> - ushort colreg = bmp_logo_palette[i];
> -#ifdef CONFIG_ATMEL_LCD
> - uint lut_entry;
> -#ifdef CONFIG_ATMEL_LCD_BGR555
> - lut_entry = ((colreg & 0x000F) << 11) |
> - ((colreg & 0x00F0) << 2) |
> - ((colreg & 0x0F00) >> 7);
> -#else /* CONFIG_ATMEL_LCD_RGB565 */
> - lut_entry = ((colreg & 0x000F) << 1) |
> - ((colreg & 0x00F0) << 3) |
> - ((colreg & 0x0F00) << 4);
> -#endif
> - *(cmap + BMP_LOGO_OFFSET) = lut_entry;
> - cmap++;
> -#else /* !CONFIG_ATMEL_LCD */
> -#ifdef CONFIG_SYS_INVERT_COLORS
> - *cmap++ = 0xffff - colreg;
> -#else
> - *cmap++ = colreg;
> -#endif
> -#endif /* CONFIG_ATMEL_LCD */
> + /* use the most significant bits here */
> + uint8_t red = ((bmp_logo_palette[i] >> 4) & 0xF0);
> + uint8_t green = ((bmp_logo_palette[i] >> 0) & 0xF0);
> + uint8_t blue = ((bmp_logo_palette[i] << 4) & 0xF0);
> + debug("LCD: setup colreg %u with "
> + "R: 0x%02x G: 0x%02x B: 0x%02x (0x%04x)\n",
> + i+BMP_LOGO_OFFSET, red, green, blue, bmp_logo_palette[i]);
> + /* leave room for the default colormap here */
> + lcd_setcolreg(i+BMP_LOGO_OFFSET, red, green, blue);
> }
>
> WATCHDOG_RESET();
>
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