diff options
-rw-r--r-- | drivers/video/omap2/dss/dss.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c index 2424064c9cef..9423a2ee3aac 100644 --- a/drivers/video/omap2/dss/dss.c +++ b/drivers/video/omap2/dss/dss.c | |||
@@ -74,6 +74,7 @@ static struct { | |||
74 | enum omap_dss_clk_source dispc_clk_source; | 74 | enum omap_dss_clk_source dispc_clk_source; |
75 | enum omap_dss_clk_source lcd_clk_source[MAX_DSS_LCD_MANAGERS]; | 75 | enum omap_dss_clk_source lcd_clk_source[MAX_DSS_LCD_MANAGERS]; |
76 | 76 | ||
77 | bool ctx_valid; | ||
77 | u32 ctx[DSS_SZ_REGS / sizeof(u32)]; | 78 | u32 ctx[DSS_SZ_REGS / sizeof(u32)]; |
78 | } dss; | 79 | } dss; |
79 | 80 | ||
@@ -109,12 +110,19 @@ static void dss_save_context(void) | |||
109 | SR(SDI_CONTROL); | 110 | SR(SDI_CONTROL); |
110 | SR(PLL_CONTROL); | 111 | SR(PLL_CONTROL); |
111 | } | 112 | } |
113 | |||
114 | dss.ctx_valid = true; | ||
115 | |||
116 | DSSDBG("context saved\n"); | ||
112 | } | 117 | } |
113 | 118 | ||
114 | static void dss_restore_context(void) | 119 | static void dss_restore_context(void) |
115 | { | 120 | { |
116 | DSSDBG("dss_restore_context\n"); | 121 | DSSDBG("dss_restore_context\n"); |
117 | 122 | ||
123 | if (!dss.ctx_valid) | ||
124 | return; | ||
125 | |||
118 | RR(CONTROL); | 126 | RR(CONTROL); |
119 | 127 | ||
120 | if (dss_feat_get_supported_displays(OMAP_DSS_CHANNEL_LCD) & | 128 | if (dss_feat_get_supported_displays(OMAP_DSS_CHANNEL_LCD) & |
@@ -122,6 +130,8 @@ static void dss_restore_context(void) | |||
122 | RR(SDI_CONTROL); | 130 | RR(SDI_CONTROL); |
123 | RR(PLL_CONTROL); | 131 | RR(PLL_CONTROL); |
124 | } | 132 | } |
133 | |||
134 | DSSDBG("context restored\n"); | ||
125 | } | 135 | } |
126 | 136 | ||
127 | #undef SR | 137 | #undef SR |