diff options
Diffstat (limited to 'drivers/video/omap2')
| -rw-r--r-- | drivers/video/omap2/dss/dsi.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 542c6e2a3ff1..de3fdab46f38 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -238,6 +238,8 @@ static struct bool te_enabled; + struct workqueue_struct *workqueue; + struct work_struct framedone_work; void (*framedone_callback)(int, void *); void *framedone_data; @@ -2759,6 +2761,7 @@ static void dsi_update_screen_dispc(struct omap_dss_device *dssdev, unsigned packet_payload; unsigned packet_len; u32 l; + int r; const unsigned channel = dsi.update_channel; /* line buffer is 1024 x 24bits */ /* XXX: for some reason using full buffer size causes considerable TX @@ -2809,8 +2812,9 @@ static void dsi_update_screen_dispc(struct omap_dss_device *dssdev, dsi_perf_mark_start(); - schedule_delayed_work(&dsi.framedone_timeout_work, + r = queue_delayed_work(dsi.workqueue, &dsi.framedone_timeout_work, msecs_to_jiffies(250)); + BUG_ON(r == 0); dss_start_update(dssdev); @@ -2841,6 +2845,11 @@ static void dsi_framedone_timeout_work_callback(struct work_struct *work) DSSERR("Framedone not received for 250ms!\n"); + /* XXX While extremely unlikely, we could get FRAMEDONE interrupt after + * 250ms which would conflict with this timeout work. What should be + * done is first cancel the transfer on the HW, and then cancel the + * possibly scheduled framedone work */ + /* SIDLEMODE back to smart-idle */ dispc_enable_sidle(); @@ -2873,6 +2882,7 @@ static void dsi_framedone_timeout_work_callback(struct work_struct *work) static void dsi_framedone_irq_callback(void *data, u32 mask) { + int r; /* Note: We get FRAMEDONE when DISPC has finished sending pixels and * turns itself off. However, DSI still has the pixels in its buffers, * and is sending the data. @@ -2881,7 +2891,8 @@ static void dsi_framedone_irq_callback(void *data, u32 mask) /* SIDLEMODE back to smart-idle */ dispc_enable_sidle(); - schedule_work(&dsi.framedone_work); + r = queue_work(dsi.workqueue, &dsi.framedone_work); + BUG_ON(r == 0); } static void dsi_handle_framedone(void) @@ -3292,6 +3303,10 @@ int dsi_init(struct platform_device *pdev) mutex_init(&dsi.lock); sema_init(&dsi.bus_lock, 1); + dsi.workqueue = create_singlethread_workqueue("dsi"); + if (dsi.workqueue == NULL) + return -ENOMEM; + INIT_WORK(&dsi.framedone_work, dsi_framedone_work_callback); INIT_DELAYED_WORK_DEFERRABLE(&dsi.framedone_timeout_work, dsi_framedone_timeout_work_callback); @@ -3328,6 +3343,7 @@ int dsi_init(struct platform_device *pdev) err2: iounmap(dsi.base); err1: + destroy_workqueue(dsi.workqueue); return r; } @@ -3335,6 +3351,8 @@ void dsi_exit(void) { iounmap(dsi.base); + destroy_workqueue(dsi.workqueue); + DSSDBG("omap_dsi_exit\n"); } |