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sh: add a start_transfer() callback to the LCDC driver

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This patch adds a ->start_transfer() callback to the
driver sh_mobile_lcdcfb.c. The callback is used to
program the LCDC panel in the case of one-shot mode.

Needed by the LCD controller used on the KFR2R09 board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2009-12-07 14:20:06 +00:00 committed by Paul Mundt
parent b25b975846
commit ef61aae4dd
2 changed files with 11 additions and 1 deletions
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10
drivers/video/sh_mobile_lcdcfb.c
View File

@ -281,6 +281,7 @@ static void sh_mobile_lcdc_deferred_io(struct fb_info *info,
struct list_head *pagelist) struct list_head *pagelist)
{ {
struct sh_mobile_lcdc_chan *ch = info->par; struct sh_mobile_lcdc_chan *ch = info->par;
struct sh_mobile_lcdc_board_cfg *bcfg = &ch->cfg.board_cfg;
/* enable clocks before accessing hardware */ /* enable clocks before accessing hardware */
sh_mobile_lcdc_clk_on(ch->lcdc); sh_mobile_lcdc_clk_on(ch->lcdc);
@ -305,10 +306,17 @@ static void sh_mobile_lcdc_deferred_io(struct fb_info *info,
/* trigger panel update */ /* trigger panel update */
dma_map_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); dma_map_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE);
if (bcfg->start_transfer)
bcfg->start_transfer(bcfg->board_data, ch,
&sh_mobile_lcdc_sys_bus_ops);
lcdc_write_chan(ch, LDSM2R, 1); lcdc_write_chan(ch, LDSM2R, 1);
dma_unmap_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); dma_unmap_sg(info->dev, ch->sglist, nr_pages, DMA_TO_DEVICE);
} else } else {
if (bcfg->start_transfer)
bcfg->start_transfer(bcfg->board_data, ch,
&sh_mobile_lcdc_sys_bus_ops);
lcdc_write_chan(ch, LDSM2R, 1); lcdc_write_chan(ch, LDSM2R, 1);
}
} }
static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info)

2
include/video/sh_mobile_lcdc.h
View File

@ -50,6 +50,8 @@ struct sh_mobile_lcdc_board_cfg {
void *board_data; void *board_data;
int (*setup_sys)(void *board_data, void *sys_ops_handle, int (*setup_sys)(void *board_data, void *sys_ops_handle,
struct sh_mobile_lcdc_sys_bus_ops *sys_ops); struct sh_mobile_lcdc_sys_bus_ops *sys_ops);
void (*start_transfer)(void *board_data, void *sys_ops_handle,
struct sh_mobile_lcdc_sys_bus_ops *sys_ops);
void (*display_on)(void *board_data); void (*display_on)(void *board_data);
void (*display_off)(void *board_data); void (*display_off)(void *board_data);
}; };