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authorSemwal, Sumit <sumit.semwal@ti.com>2011-03-01 02:42:14 -0600
committerTomi Valkeinen <tomi.valkeinen@ti.com>2011-03-11 15:46:26 +0200
commita1a0dccaea9e036200dc0b1070af1bfae06690fb (patch)
treedf2ab6605e40af63b3187b2f54505124f9f345db
parentfd4b34f60736a20c5acd81cbb3083a0c60ae058e (diff)
downloadblackbird-op-linux-a1a0dccaea9e036200dc0b1070af1bfae06690fb.tar.gz
blackbird-op-linux-a1a0dccaea9e036200dc0b1070af1bfae06690fb.zip
OMAP2PLUS:DSS2: Use opt_clock_available from pdata
hwmod databases provide information about which optional clocks are available for a given platform. This is available via a function pointer opt_clock_enable in pdata. Use this information during get/enable/disable/put of clocks. Signed-off-by: Sumit Semwal <sumit.semwal@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
-rw-r--r--drivers/video/omap2/dss/dss.c46
1 files changed, 30 insertions, 16 deletions
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index 50c18677684d..0cf5f8bd1c8a 100644
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -706,6 +706,7 @@ static int dss_get_clock(struct clk **clock, const char *clk_name)
static int dss_get_clocks(void)
{
int r;
+ struct omap_display_platform_data *pdata = dss.pdev->dev.platform_data;
dss.dss_ick = NULL;
dss.dss_fck = NULL;
@@ -721,17 +722,28 @@ static int dss_get_clocks(void)
if (r)
goto err;
- r = dss_get_clock(&dss.dss_sys_clk, "sys_clk");
- if (r)
+ if (!pdata->opt_clock_available) {
+ r = -ENODEV;
goto err;
+ }
- r = dss_get_clock(&dss.dss_tv_fck, "tv_clk");
- if (r)
- goto err;
+ if (pdata->opt_clock_available("sys_clk")) {
+ r = dss_get_clock(&dss.dss_sys_clk, "sys_clk");
+ if (r)
+ goto err;
+ }
- r = dss_get_clock(&dss.dss_video_fck, "video_clk");
- if (r)
- goto err;
+ if (pdata->opt_clock_available("tv_clk")) {
+ r = dss_get_clock(&dss.dss_tv_fck, "tv_clk");
+ if (r)
+ goto err;
+ }
+
+ if (pdata->opt_clock_available("video_clk")) {
+ r = dss_get_clock(&dss.dss_video_fck, "video_clk");
+ if (r)
+ goto err;
+ }
return 0;
@@ -754,9 +766,11 @@ static void dss_put_clocks(void)
{
if (dss.dss_video_fck)
clk_put(dss.dss_video_fck);
- clk_put(dss.dss_tv_fck);
+ if (dss.dss_tv_fck)
+ clk_put(dss.dss_tv_fck);
+ if (dss.dss_sys_clk)
+ clk_put(dss.dss_sys_clk);
clk_put(dss.dss_fck);
- clk_put(dss.dss_sys_clk);
clk_put(dss.dss_ick);
}
@@ -805,11 +819,11 @@ static void dss_clk_enable_no_ctx(enum dss_clock clks)
clk_enable(dss.dss_ick);
if (clks & DSS_CLK_FCK)
clk_enable(dss.dss_fck);
- if (clks & DSS_CLK_SYSCK)
+ if ((clks & DSS_CLK_SYSCK) && dss.dss_sys_clk)
clk_enable(dss.dss_sys_clk);
- if (clks & DSS_CLK_TVFCK)
+ if ((clks & DSS_CLK_TVFCK) && dss.dss_tv_fck)
clk_enable(dss.dss_tv_fck);
- if (clks & DSS_CLK_VIDFCK)
+ if ((clks & DSS_CLK_VIDFCK) && dss.dss_video_fck)
clk_enable(dss.dss_video_fck);
dss.num_clks_enabled += num_clks;
@@ -833,11 +847,11 @@ static void dss_clk_disable_no_ctx(enum dss_clock clks)
clk_disable(dss.dss_ick);
if (clks & DSS_CLK_FCK)
clk_disable(dss.dss_fck);
- if (clks & DSS_CLK_SYSCK)
+ if ((clks & DSS_CLK_SYSCK) && dss.dss_sys_clk)
clk_disable(dss.dss_sys_clk);
- if (clks & DSS_CLK_TVFCK)
+ if ((clks & DSS_CLK_TVFCK) && dss.dss_tv_fck)
clk_disable(dss.dss_tv_fck);
- if (clks & DSS_CLK_VIDFCK)
+ if ((clks & DSS_CLK_VIDFCK) && dss.dss_video_fck)
clk_disable(dss.dss_video_fck);
dss.num_clks_enabled -= num_clks;
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