OMAP: DSS2: Check for SDI HW before accessing SDI registers
Only OMAP 3430 hardware has SDI support. The availability of SDI HW can
be found out by checking if the LCD channel supports SDI displays.
This patch checks for SDI HW support before accessing SDI registers,
which fixes a crash on OMAP4 when SDI SW support is compiled in.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index dc57100..50c1867 100644
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -32,6 +32,7 @@
#include <plat/display.h>
#include <plat/clock.h>
#include "dss.h"
+#include "dss_features.h"
#define DSS_SZ_REGS SZ_512
@@ -110,10 +111,11 @@
SR(SYSCONFIG);
SR(CONTROL);
-#ifdef CONFIG_OMAP2_DSS_SDI
- SR(SDI_CONTROL);
- SR(PLL_CONTROL);
-#endif
+ if (dss_feat_get_supported_displays(OMAP_DSS_CHANNEL_LCD) &
+ OMAP_DISPLAY_TYPE_SDI) {
+ SR(SDI_CONTROL);
+ SR(PLL_CONTROL);
+ }
}
void dss_restore_context(void)
@@ -124,10 +126,11 @@
RR(SYSCONFIG);
RR(CONTROL);
-#ifdef CONFIG_OMAP2_DSS_SDI
- RR(SDI_CONTROL);
- RR(PLL_CONTROL);
-#endif
+ if (dss_feat_get_supported_displays(OMAP_DSS_CHANNEL_LCD) &
+ OMAP_DISPLAY_TYPE_SDI) {
+ RR(SDI_CONTROL);
+ RR(PLL_CONTROL);
+ }
}
#undef SR
@@ -259,9 +262,13 @@
DUMPREG(DSS_SYSSTATUS);
DUMPREG(DSS_IRQSTATUS);
DUMPREG(DSS_CONTROL);
- DUMPREG(DSS_SDI_CONTROL);
- DUMPREG(DSS_PLL_CONTROL);
- DUMPREG(DSS_SDI_STATUS);
+
+ if (dss_feat_get_supported_displays(OMAP_DSS_CHANNEL_LCD) &
+ OMAP_DISPLAY_TYPE_SDI) {
+ DUMPREG(DSS_SDI_CONTROL);
+ DUMPREG(DSS_PLL_CONTROL);
+ DUMPREG(DSS_SDI_STATUS);
+ }
dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
#undef DUMPREG