Flush posted write in _enable_lcd_out() and _enable_digit_out(). This
ensures the the lcd/digit bit is written before the code starts waiting
for interrupts about enabling/disabling the output.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
drivers/video/omap2/dss/dispc.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 5c81533..5bbd838 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -1916,10 +1916,14 @@ static void dispc_disable_isr(void *data, u32 mask)
static void _enable_lcd_out(enum omap_channel channel, bool enable)
{
- if (channel == OMAP_DSS_CHANNEL_LCD2)
+ if (channel == OMAP_DSS_CHANNEL_LCD2) {
REG_FLD_MOD(DISPC_CONTROL2, enable ? 1 : 0, 0, 0);
- else
+ /* flush posted write */
+ dispc_read_reg(DISPC_CONTROL2);
+ } else {
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 0, 0);
+ dispc_read_reg(DISPC_CONTROL);
+ }
}
static void dispc_mgr_enable_lcd_out(enum omap_channel channel, bool enable)
@@ -1967,6 +1971,8 @@ static void dispc_mgr_enable_lcd_out(enum omap_channel channel, bool enable)
static void _enable_digit_out(bool enable)
{
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 1, 1);
+ /* flush posted write */
+ dispc_read_reg(DISPC_CONTROL);
}
static void dispc_mgr_enable_digit_out(bool enable)
--
1.7.4.1
--
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