dss.c only saves 1 register (3 in OMAP3) so the extra overhead from
need_ctx_restore & co. is probably bigger than the time spent saving and
restoring those few registers every time.
So remove the code from dss.c and restore context every time dss has
been off.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
drivers/video/omap2/dss/dss.c | 61 +----------------------------------------
1 files changed, 1 insertions(+), 60 deletions(-)
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index c8d7357..91572b6 100644
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -62,7 +62,6 @@ static struct {
struct platform_device *pdev;
void __iomem *base;
- int ctx_loss_cnt;
struct mutex runtime_lock;
int runtime_count;
@@ -633,61 +632,6 @@ void dss_select_hdmi_venc_clk_source(enum dss_hdmi_venc_clk_source_select hdmi)
REG_FLD_MOD(DSS_CONTROL, hdmi, 15, 15); /* VENC_HDMI_SWITCH */
}
-/* CONTEXT */
-static void dss_init_ctx_loss_count(void)
-{
- struct device *dev = &dss.pdev->dev;
- struct omap_display_platform_data *pdata = dev->platform_data;
- struct omap_dss_board_info *board_data = pdata->board_data;
- int cnt = 0;
-
- /*
- * get_context_loss_count returns negative on error. We'll ignore the
- * error and store the error to ctx_loss_cnt, which will cause
- * dss_need_ctx_restore() call to return true.
- */
-
- if (board_data->get_context_loss_count)
- cnt = board_data->get_context_loss_count(dev);
-
- WARN_ON(cnt < 0);
-
- dss.ctx_loss_cnt = cnt;
-
- DSSDBG("initial ctx_loss_cnt %u\n", cnt);
-}
-
-static bool dss_need_ctx_restore(void)
-{
- struct device *dev = &dss.pdev->dev;
- struct omap_display_platform_data *pdata = dev->platform_data;
- struct omap_dss_board_info *board_data = pdata->board_data;
- int cnt;
-
- /*
- * If get_context_loss_count is not available, assume that we need
- * context restore always.
- */
- if (!board_data->get_context_loss_count)
- return true;
-
- cnt = board_data->get_context_loss_count(dev);
- if (cnt < 0) {
- dev_err(dev, "getting context loss count failed, will force "
- "context restore\n");
- dss.ctx_loss_cnt = cnt;
- return true;
- }
-
- if (cnt == dss.ctx_loss_cnt)
- return false;
-
- DSSDBG("ctx_loss_cnt %d -> %d\n", dss.ctx_loss_cnt, cnt);
- dss.ctx_loss_cnt = cnt;
-
- return true;
-}
-
static int dss_get_clocks(void)
{
struct clk *clk;
@@ -756,8 +700,7 @@ int dss_runtime_get(void)
if (r < 0)
goto err;
- if (dss_need_ctx_restore())
- dss_restore_context();
+ dss_restore_context();
}
mutex_unlock(&dss.runtime_lock);
@@ -828,8 +771,6 @@ static int omap_dsshw_probe(struct platform_device *pdev)
if (r)
goto err_clocks;
- dss_init_ctx_loss_count();
-
mutex_init(&dss.runtime_lock);
pm_runtime_enable(&pdev->dev);
--
1.7.4.1
--
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