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| author | Lajos Molnar <lajos@ti.com> | 2012-02-22 06:53:16 (GMT) |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2012-03-06 12:08:30 (GMT) |
| commit | 21e56f79abad987555351c73569fc8358636b0fa (patch) | |
| tree | f96b97e7903c994b776182f4a3ab6eabc3a59208 /drivers/video/omap2/dss/manager.c | |
| parent | c0c1cfcb577d61ec55e209bc5f869d3d80a8f371 (diff) | |
| download | linux-fsl-qoriq-21e56f79abad987555351c73569fc8358636b0fa.tar.xz | |
OMAPDSS: MANAGER/APPLY: Add runtime_pm protection around wait_for_go/vsync functions
If DSS suspends within the functions dss_mgr_wait_for_go(),
dss_mgr_wait_for_go_ovl() or dss_mgr_wait_for_vsync(). It may lose it's clock
and lead to a register access failure.
Request runtime_pm around these functions.
[archit@ti.com: Moved runtime_pm calls to wait_for_go/vsync functions rather
then calling them from omap_dispc_wait_for_irq_interruptible_timeout()]
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video/omap2/dss/manager.c')
| -rw-r--r-- | drivers/video/omap2/dss/manager.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c index d1858e7..e736460 100644 --- a/drivers/video/omap2/dss/manager.c +++ b/drivers/video/omap2/dss/manager.c @@ -494,6 +494,11 @@ static int dss_mgr_wait_for_vsync(struct omap_overlay_manager *mgr) { unsigned long timeout = msecs_to_jiffies(500); u32 irq; + int r; + + r = dispc_runtime_get(); + if (r) + return r; if (mgr->device->type == OMAP_DISPLAY_TYPE_VENC) { irq = DISPC_IRQ_EVSYNC_ODD; @@ -505,7 +510,12 @@ static int dss_mgr_wait_for_vsync(struct omap_overlay_manager *mgr) else irq = DISPC_IRQ_VSYNC2; } - return omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout); + + r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout); + + dispc_runtime_put(); + + return r; } int dss_init_overlay_managers(struct platform_device *pdev) |