diff options
Diffstat (limited to 'recipes/linux/linux-omap-pm/dss2/0054-DSS2-DSI-more-error-handling.patch')
| -rw-r--r-- | recipes/linux/linux-omap-pm/dss2/0054-DSS2-DSI-more-error-handling.patch | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-pm/dss2/0054-DSS2-DSI-more-error-handling.patch b/recipes/linux/linux-omap-pm/dss2/0054-DSS2-DSI-more-error-handling.patch new file mode 100644 index 0000000000..5f4f155452 --- /dev/null +++ b/recipes/linux/linux-omap-pm/dss2/0054-DSS2-DSI-more-error-handling.patch @@ -0,0 +1,85 @@ +From 3b27a3c4f6b84e46c84509f610dfe1456c0d72d3 Mon Sep 17 00:00:00 2001 +From: Tomi Valkeinen <tomi.valkeinen@nokia.com> +Date: Mon, 27 Apr 2009 11:06:16 +0300 +Subject: [PATCH 54/69] DSS2: DSI: more error handling + +--- + drivers/video/omap2/dss/dsi.c | 27 +++++++++++++++++++++++++++ + 1 files changed, 27 insertions(+), 0 deletions(-) + +diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c +index d59ad38..d8df353 100644 +--- a/drivers/video/omap2/dss/dsi.c ++++ b/drivers/video/omap2/dss/dsi.c +@@ -289,6 +289,8 @@ static struct + + bool autoupdate_setup; + ++ u32 errors; ++ spinlock_t errors_lock; + #ifdef DEBUG + ktime_t perf_setup_time; + ktime_t perf_start_time; +@@ -541,6 +543,9 @@ void dsi_irq_handler(void) + if (irqstatus & DSI_IRQ_ERROR_MASK) { + DSSERR("DSI error, irqstatus %x\n", irqstatus); + print_irq_status(irqstatus); ++ spin_lock(&dsi.errors_lock); ++ dsi.errors |= irqstatus & DSI_IRQ_ERROR_MASK; ++ spin_unlock(&dsi.errors_lock); + } else if (debug_irq) { + print_irq_status(irqstatus); + } +@@ -616,6 +621,17 @@ static void _dsi_initialize_irq(void) + -1 & (~DSI_CIO_IRQ_ERRCONTROL2)); + } + ++static u32 dsi_get_errors(void) ++{ ++ unsigned long flags; ++ u32 e; ++ spin_lock_irqsave(&dsi.errors_lock, flags); ++ e = dsi.errors; ++ dsi.errors = 0; ++ spin_unlock_irqrestore(&dsi.errors_lock, flags); ++ return e; ++} ++ + static void dsi_vc_enable_bta_irq(int channel) + { + u32 l; +@@ -1807,6 +1823,7 @@ static int dsi_vc_send_bta(int channel) + static int dsi_vc_send_bta_sync(int channel) + { + int r = 0; ++ u32 err; + + init_completion(&dsi.bta_completion); + +@@ -1822,6 +1839,13 @@ static int dsi_vc_send_bta_sync(int channel) + r = -EIO; + goto err; + } ++ ++ err = dsi_get_errors(); ++ if (err) { ++ DSSERR("Error while sending BTA: %x\n", err); ++ r = -EIO; ++ goto err; ++ } + err: + dsi_vc_disable_bta_irq(channel); + +@@ -3720,6 +3744,9 @@ int dsi_init(void) + { + u32 rev; + ++ spin_lock_init(&dsi.errors_lock); ++ dsi.errors = 0; ++ + spin_lock_init(&dsi.cmd_lock); + dsi.cmd_fifo = kfifo_alloc( + DSI_CMD_FIFO_LEN * sizeof(struct dsi_cmd_item), +-- +1.6.2.4 + |