sh: add a start_transfer() callback to the LCDC driver
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>
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c
index b4b5de9..d346bba 100644
--- a/drivers/video/sh_mobile_lcdcfb.c
+++ b/drivers/video/sh_mobile_lcdcfb.c
@@ -281,6 +281,7 @@
struct list_head *pagelist)
{
struct sh_mobile_lcdc_chan *ch = info->par;
+ struct sh_mobile_lcdc_board_cfg *bcfg = &ch->cfg.board_cfg;
/* enable clocks before accessing hardware */
sh_mobile_lcdc_clk_on(ch->lcdc);
@@ -305,10 +306,17 @@
/* trigger panel update */
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);
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);
+ }
}
static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info)
diff --git a/include/video/sh_mobile_lcdc.h b/include/video/sh_mobile_lcdc.h
index 25144ab..2882054 100644
--- a/include/video/sh_mobile_lcdc.h
+++ b/include/video/sh_mobile_lcdc.h
@@ -50,6 +50,8 @@
void *board_data;
int (*setup_sys)(void *board_data, void *sys_ops_handle,
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_off)(void *board_data);
};