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fbdev: sh_mobile_lcdc: Don't confuse line size with pitch 

When using the MERAM the LCDC line size needs to be programmed with a
MERAM-specific value different than the real frame buffer pitch. Fix it.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: stable@vger.kernel.org  # for 3.4
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Laurent Pinchart 2012-05-18 10:58:26 +02:00 committed by Linus Torvalds
parent 471368557a
commit 72c04af9a2
2 changed files with 4 additions and 2 deletions
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5
drivers/video/sh_mobile_lcdcfb.c
View File

@ -758,7 +758,7 @@ static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
}
lcdc_write_chan(ch, LDDFR, tmp);
lcdc_write_chan(ch, LDMLSR, ch->pitch);
lcdc_write_chan(ch, LDMLSR, ch->line_size);
lcdc_write_chan(ch, LDSA1R, ch->base_addr_y);
if (ch->format->yuv)
lcdc_write_chan(ch, LDSA2R, ch->base_addr_c);
@ -847,6 +847,7 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
ch->base_addr_y = ch->dma_handle;
ch->base_addr_c = ch->base_addr_y + ch->xres * ch->yres_virtual;
ch->line_size = ch->pitch;
/* Enable MERAM if possible. */
if (mdev == NULL || mdev->ops == NULL ||
@ -882,7 +883,7 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
meram = mdev->ops->meram_register(mdev, ch->cfg->meram_cfg,
ch->pitch, ch->yres, pixelformat,
&ch->pitch);
&ch->line_size);
if (!IS_ERR(meram)) {
mdev->ops->meram_update(mdev, meram,
ch->base_addr_y, ch->base_addr_c,

1
drivers/video/sh_mobile_lcdcfb.h
View File

@ -84,6 +84,7 @@ struct sh_mobile_lcdc_chan {
unsigned long base_addr_y;
unsigned long base_addr_c;
unsigned int line_size;
int (*notify)(struct sh_mobile_lcdc_chan *ch,
enum sh_mobile_lcdc_entity_event event,