diff options
| -rw-r--r-- | drivers/video/omap2/dss/dsi.c | 123 |
1 files changed, 73 insertions, 50 deletions
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 7a4b4404a97..b6c08a6f2da 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -477,26 +477,33 @@ static void print_irq_status_cio(u32 status) printk("\n"); } -static int debug_irq; - -/* called from dss */ -static irqreturn_t omap_dsi_irq_handler(int irq, void *arg) +#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS +static void dsi_collect_irq_stats(u32 irqstatus, u32 *vcstatus, u32 ciostatus) { - u32 irqstatus, vcstatus, ciostatus; int i; - irqstatus = dsi_read_reg(DSI_IRQSTATUS); - - /* IRQ is not for us */ - if (!irqstatus) - return IRQ_NONE; - -#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS spin_lock(&dsi.irq_stats_lock); + dsi.irq_stats.irq_count++; dss_collect_irq_stats(irqstatus, dsi.irq_stats.dsi_irqs); + + for (i = 0; i < 4; ++i) + dss_collect_irq_stats(vcstatus[i], dsi.irq_stats.vc_irqs[i]); + + dss_collect_irq_stats(ciostatus, dsi.irq_stats.cio_irqs); + + spin_unlock(&dsi.irq_stats_lock); +} +#else +#define dsi_collect_irq_stats(irqstatus, vcstatus, ciostatus) #endif +static int debug_irq; + +static void dsi_handle_irq_errors(u32 irqstatus, u32 *vcstatus, u32 ciostatus) +{ + int i; + if (irqstatus & DSI_IRQ_ERROR_MASK) { DSSERR("DSI error, irqstatus %x\n", irqstatus); print_irq_status(irqstatus); @@ -507,37 +514,48 @@ static irqreturn_t omap_dsi_irq_handler(int irq, void *arg) print_irq_status(irqstatus); } -#ifdef DSI_CATCH_MISSING_TE - if (irqstatus & DSI_IRQ_TE_TRIGGER) - del_timer(&dsi.te_timer); -#endif - for (i = 0; i < 4; ++i) { - if ((irqstatus & (1<<i)) == 0) - continue; + if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) { + DSSERR("DSI VC(%d) error, vc irqstatus %x\n", + i, vcstatus[i]); + print_irq_status_vc(i, vcstatus[i]); + } else if (debug_irq) { + print_irq_status_vc(i, vcstatus[i]); + } + } - vcstatus = dsi_read_reg(DSI_VC_IRQSTATUS(i)); + if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) { + DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus); + print_irq_status_cio(ciostatus); + } else if (debug_irq) { + print_irq_status_cio(ciostatus); + } +} -#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS - dss_collect_irq_stats(vcstatus, dsi.irq_stats.vc_irqs[i]); -#endif +static irqreturn_t omap_dsi_irq_handler(int irq, void *arg) +{ + u32 irqstatus, vcstatus[4], ciostatus; + int i; - if (vcstatus & DSI_VC_IRQ_BTA) { - complete(&dsi.bta_completion); + irqstatus = dsi_read_reg(DSI_IRQSTATUS); - if (dsi.bta_callback) - dsi.bta_callback(); - } + /* IRQ is not for us */ + if (!irqstatus) + return IRQ_NONE; - if (vcstatus & DSI_VC_IRQ_ERROR_MASK) { - DSSERR("DSI VC(%d) error, vc irqstatus %x\n", - i, vcstatus); - print_irq_status_vc(i, vcstatus); - } else if (debug_irq) { - print_irq_status_vc(i, vcstatus); + dsi_write_reg(DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK); + /* flush posted write */ + dsi_read_reg(DSI_IRQSTATUS); + + for (i = 0; i < 4; ++i) { + if ((irqstatus & (1 << i)) == 0) { + vcstatus[i] = 0; + continue; } - dsi_write_reg(DSI_VC_IRQSTATUS(i), vcstatus); + vcstatus[i] = dsi_read_reg(DSI_VC_IRQSTATUS(i)); + + dsi_write_reg(DSI_VC_IRQSTATUS(i), vcstatus[i]); /* flush posted write */ dsi_read_reg(DSI_VC_IRQSTATUS(i)); } @@ -545,29 +563,34 @@ static irqreturn_t omap_dsi_irq_handler(int irq, void *arg) if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) { ciostatus = dsi_read_reg(DSI_COMPLEXIO_IRQ_STATUS); -#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS - dss_collect_irq_stats(ciostatus, dsi.irq_stats.cio_irqs); -#endif - dsi_write_reg(DSI_COMPLEXIO_IRQ_STATUS, ciostatus); /* flush posted write */ dsi_read_reg(DSI_COMPLEXIO_IRQ_STATUS); + } else { + ciostatus = 0; + } - if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) { - DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus); - print_irq_status_cio(ciostatus); - } else if (debug_irq) { - print_irq_status_cio(ciostatus); +#ifdef DSI_CATCH_MISSING_TE + if (irqstatus & DSI_IRQ_TE_TRIGGER) + del_timer(&dsi.te_timer); +#endif + + for (i = 0; i < 4; ++i) { + if (vcstatus[i] == 0) + continue; + + if (vcstatus[i] & DSI_VC_IRQ_BTA) { + complete(&dsi.bta_completion); + + if (dsi.bta_callback) + dsi.bta_callback(); } } - dsi_write_reg(DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK); - /* flush posted write */ - dsi_read_reg(DSI_IRQSTATUS); + dsi_handle_irq_errors(irqstatus, vcstatus, ciostatus); + + dsi_collect_irq_stats(irqstatus, vcstatus, ciostatus); -#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS - spin_unlock(&dsi.irq_stats_lock); -#endif return IRQ_HANDLED; } |