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authorMagnus Damm <damm@opensource.se>2009-12-07 14:26:05 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-12-09 12:40:45 +0900
commit657bf0bd068b2dc5244d553be66daac0a9e745d1 (patch)
treee0d6358a7b5e1421fad4644335f9ba34195d9071 /arch/sh
parentef61aae4ddf1dbd0e9b6ad21e2e57632a8fe76f6 (diff)
downloadop-kernel-dev-657bf0bd068b2dc5244d553be66daac0a9e745d1.zip
op-kernel-dev-657bf0bd068b2dc5244d553be66daac0a9e745d1.tar.gz
sh: LCDC start_transfer() for the KFR2R09 board
This patch adds a ->start_transfer() callback to the KFR2R09 lcd handling code. The callback is used to notify the lcd controller that a new frame of data is about to be transferred. The callback is only used in combination with deferred io, but the code has been tested both with and without deferred io enabled. Without this patch the display data on the KFR2R09 lcd panel becomes corrupted over time. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/boards/mach-kfr2r09/lcd_wqvga.c6
-rw-r--r--arch/sh/boards/mach-kfr2r09/setup.c1
-rw-r--r--arch/sh/include/mach-kfr2r09/mach/kfr2r09.h6
3 files changed, 13 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c b/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
index 8ccb1cc..e9b97084 100644
--- a/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
+++ b/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
@@ -273,6 +273,12 @@ int kfr2r09_lcd_setup(void *board_data, void *sohandle,
return 0;
}
+void kfr2r09_lcd_start(void *board_data, void *sohandle,
+ struct sh_mobile_lcdc_sys_bus_ops *so)
+{
+ write_memory_start(sohandle, so);
+}
+
#define CTRL_CKSW 0x10
#define CTRL_C10 0x20
#define CTRL_CPSW 0x80
diff --git a/arch/sh/boards/mach-kfr2r09/setup.c b/arch/sh/boards/mach-kfr2r09/setup.c
index 87438d6..5cf7a6e 100644
--- a/arch/sh/boards/mach-kfr2r09/setup.c
+++ b/arch/sh/boards/mach-kfr2r09/setup.c
@@ -149,6 +149,7 @@ static struct sh_mobile_lcdc_info kfr2r09_sh_lcdc_info = {
},
.board_cfg = {
.setup_sys = kfr2r09_lcd_setup,
+ .start_transfer = kfr2r09_lcd_start,
.display_on = kfr2r09_lcd_on,
.display_off = kfr2r09_lcd_off,
},
diff --git a/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h b/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h
index 174374e..484ef42 100644
--- a/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h
+++ b/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h
@@ -8,6 +8,8 @@ void kfr2r09_lcd_on(void *board_data);
void kfr2r09_lcd_off(void *board_data);
int kfr2r09_lcd_setup(void *board_data, void *sys_ops_handle,
struct sh_mobile_lcdc_sys_bus_ops *sys_ops);
+void kfr2r09_lcd_start(void *board_data, void *sys_ops_handle,
+ struct sh_mobile_lcdc_sys_bus_ops *sys_ops);
#else
static inline void kfr2r09_lcd_on(void *board_data) {}
static inline void kfr2r09_lcd_off(void *board_data) {}
@@ -16,6 +18,10 @@ static inline int kfr2r09_lcd_setup(void *board_data, void *sys_ops_handle,
{
return -ENODEV;
}
+static inline void kfr2r09_lcd_start(void *board_data, void *sys_ops_handle,
+ struct sh_mobile_lcdc_sys_bus_ops *sys_ops)
+{
+}
#endif
#endif /* __ASM_SH_KFR2R09_H */
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