OMAP: DSS2: improve DSS clk src selection

dss_select_clk_source() was rather confusing. Selecting the source with
enums is much clearer.

The clk source selection is also stored into memory, so that we know what
is the selected source, even when clocks are off. This is important during
setup, as we need to what clocks to turn on before the clocks are turned
on.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

1 files changed, 11 insertions, 3 deletions

diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index 41145af3635..3713dc69825 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -119,6 +119,12 @@ enum dss_clock {
 	DSS_CLK_96M	= 1 << 4,
 };
 
+enum dss_clk_source {
+	DSS_SRC_DSI1_PLL_FCLK,
+	DSS_SRC_DSI2_PLL_FCLK,
+	DSS_SRC_DSS1_ALWON_FCLK,
+};
+
 struct dss_clock_info {
 	/* rates that we get with dividers below */
 	unsigned long fck;
@@ -219,9 +225,11 @@ void dss_sdi_init(u8 datapairs);
 int dss_sdi_enable(void);
 void dss_sdi_disable(void);
 
-void dss_select_clk_source(bool dsi, bool dispc);
-int dss_get_dsi_clk_source(void);
-int dss_get_dispc_clk_source(void);
+void dss_select_dispc_clk_source(enum dss_clk_source clk_src);
+void dss_select_dsi_clk_source(enum dss_clk_source clk_src);
+enum dss_clk_source dss_get_dispc_clk_source(void);
+enum dss_clk_source dss_get_dsi_clk_source(void);
+
 void dss_set_venc_output(enum omap_dss_venc_type type);
 void dss_set_dac_pwrdn_bgz(bool enable);