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authorTomi Valkeinen <tomi.valkeinen@ti.com>2011-11-26 14:39:16 +0200
committerTomi Valkeinen <tomi.valkeinen@ti.com>2011-12-02 08:54:59 +0200
commit04576d415e01aa08752bf3884db9862cfbba9115 (patch)
tree6576d073235f8f1fc591e1f895e79641c30726f3 /drivers/video
parent75ae118a0028810f93a746c25f4bb018fb044323 (diff)
downloadop-kernel-dev-04576d415e01aa08752bf3884db9862cfbba9115.zip
op-kernel-dev-04576d415e01aa08752bf3884db9862cfbba9115.tar.gz
OMAPDSS: APPLY: write fifo thresholds only if changed
Current code will always write fifo threshold values to the register, even if they are the same as previously. Separate the setting of fifo fields into a separate function, and only set new values if they are different than the old ones. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/omap2/dss/apply.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/video/omap2/dss/apply.c b/drivers/video/omap2/dss/apply.c
index 5f5812b..a3c75f5 100644
--- a/drivers/video/omap2/dss/apply.c
+++ b/drivers/video/omap2/dss/apply.c
@@ -953,6 +953,19 @@ static void dss_apply_ovl_enable(struct omap_overlay *ovl, bool enable)
op->extra_info_dirty = true;
}
+static void dss_apply_ovl_fifo_thresholds(struct omap_overlay *ovl,
+ u32 fifo_low, u32 fifo_high)
+{
+ struct ovl_priv_data *op = get_ovl_priv(ovl);
+
+ if (op->fifo_low == fifo_low && op->fifo_high == fifo_high)
+ return;
+
+ op->fifo_low = fifo_low;
+ op->fifo_high = fifo_high;
+ op->extra_info_dirty = true;
+}
+
static void dss_ovl_setup_fifo(struct omap_overlay *ovl)
{
struct ovl_priv_data *op = get_ovl_priv(ovl);
@@ -988,9 +1001,7 @@ static void dss_ovl_setup_fifo(struct omap_overlay *ovl)
BUG();
}
- op->fifo_low = fifo_low;
- op->fifo_high = fifo_high;
- op->extra_info_dirty = true;
+ dss_apply_ovl_fifo_thresholds(ovl, fifo_low, fifo_high);
}
static void dss_mgr_setup_fifos(struct omap_overlay_manager *mgr)
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