diff options
Diffstat (limited to 'drivers/video/omap2/dss/dsi.c')
| -rw-r--r-- | drivers/video/omap2/dss/dsi.c | 159 |
1 files changed, 144 insertions, 15 deletions
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 5936487b5def..6122178f5f85 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -204,6 +204,14 @@ struct dsi_update_region { struct omap_dss_device *device; }; +struct dsi_irq_stats { + unsigned long last_reset; + unsigned irq_count; + unsigned dsi_irqs[32]; + unsigned vc_irqs[4][32]; + unsigned cio_irqs[32]; +}; + static struct { void __iomem *base; @@ -258,6 +266,11 @@ static struct #endif int debug_read; int debug_write; + +#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS + spinlock_t irq_stats_lock; + struct dsi_irq_stats irq_stats; +#endif } dsi; #ifdef DEBUG @@ -528,6 +541,12 @@ void dsi_irq_handler(void) irqstatus = dsi_read_reg(DSI_IRQSTATUS); +#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); +#endif + if (irqstatus & DSI_IRQ_ERROR_MASK) { DSSERR("DSI error, irqstatus %x\n", irqstatus); print_irq_status(irqstatus); @@ -549,6 +568,10 @@ void dsi_irq_handler(void) vcstatus = dsi_read_reg(DSI_VC_IRQSTATUS(i)); +#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS + dss_collect_irq_stats(vcstatus, dsi.irq_stats.vc_irqs[i]); +#endif + if (vcstatus & DSI_VC_IRQ_BTA) complete(&dsi.bta_completion); @@ -568,6 +591,10 @@ void dsi_irq_handler(void) 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); @@ -579,6 +606,10 @@ void dsi_irq_handler(void) dsi_write_reg(DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK); /* flush posted write */ dsi_read_reg(DSI_IRQSTATUS); + +#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS + spin_unlock(&dsi.irq_stats_lock); +#endif } @@ -797,12 +828,12 @@ static int dsi_pll_power(enum dsi_pll_power_state state) /* PLL_PWR_STATUS */ while (FLD_GET(dsi_read_reg(DSI_CLK_CTRL), 29, 28) != state) { - udelay(1); - if (t++ > 1000) { + if (++t > 1000) { DSSERR("Failed to set DSI PLL power mode to %d\n", state); return -ENODEV; } + udelay(1); } return 0; @@ -1226,6 +1257,95 @@ void dsi_dump_clocks(struct seq_file *s) enable_clocks(0); } +#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS +void dsi_dump_irqs(struct seq_file *s) +{ + unsigned long flags; + struct dsi_irq_stats stats; + + spin_lock_irqsave(&dsi.irq_stats_lock, flags); + + stats = dsi.irq_stats; + memset(&dsi.irq_stats, 0, sizeof(dsi.irq_stats)); + dsi.irq_stats.last_reset = jiffies; + + spin_unlock_irqrestore(&dsi.irq_stats_lock, flags); + + seq_printf(s, "period %u ms\n", + jiffies_to_msecs(jiffies - stats.last_reset)); + + seq_printf(s, "irqs %d\n", stats.irq_count); +#define PIS(x) \ + seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]); + + seq_printf(s, "-- DSI interrupts --\n"); + PIS(VC0); + PIS(VC1); + PIS(VC2); + PIS(VC3); + PIS(WAKEUP); + PIS(RESYNC); + PIS(PLL_LOCK); + PIS(PLL_UNLOCK); + PIS(PLL_RECALL); + PIS(COMPLEXIO_ERR); + PIS(HS_TX_TIMEOUT); + PIS(LP_RX_TIMEOUT); + PIS(TE_TRIGGER); + PIS(ACK_TRIGGER); + PIS(SYNC_LOST); + PIS(LDO_POWER_GOOD); + PIS(TA_TIMEOUT); +#undef PIS + +#define PIS(x) \ + seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \ + stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \ + stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \ + stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \ + stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]); + + seq_printf(s, "-- VC interrupts --\n"); + PIS(CS); + PIS(ECC_CORR); + PIS(PACKET_SENT); + PIS(FIFO_TX_OVF); + PIS(FIFO_RX_OVF); + PIS(BTA); + PIS(ECC_NO_CORR); + PIS(FIFO_TX_UDF); + PIS(PP_BUSY_CHANGE); +#undef PIS + +#define PIS(x) \ + seq_printf(s, "%-20s %10d\n", #x, \ + stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]); + + seq_printf(s, "-- CIO interrupts --\n"); + PIS(ERRSYNCESC1); + PIS(ERRSYNCESC2); + PIS(ERRSYNCESC3); + PIS(ERRESC1); + PIS(ERRESC2); + PIS(ERRESC3); + PIS(ERRCONTROL1); + PIS(ERRCONTROL2); + PIS(ERRCONTROL3); + PIS(STATEULPS1); + PIS(STATEULPS2); + PIS(STATEULPS3); + PIS(ERRCONTENTIONLP0_1); + PIS(ERRCONTENTIONLP1_1); + PIS(ERRCONTENTIONLP0_2); + PIS(ERRCONTENTIONLP1_2); + PIS(ERRCONTENTIONLP0_3); + PIS(ERRCONTENTIONLP1_3); + PIS(ULPSACTIVENOT_ALL0); + PIS(ULPSACTIVENOT_ALL1); +#undef PIS +} +#endif + void dsi_dump_regs(struct seq_file *s) { #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(r)) @@ -1321,12 +1441,12 @@ static int dsi_complexio_power(enum dsi_complexio_power_state state) /* PWR_STATUS */ while (FLD_GET(dsi_read_reg(DSI_COMPLEXIO_CFG1), 26, 25) != state) { - udelay(1); - if (t++ > 1000) { + if (++t > 1000) { DSSERR("failed to set complexio power state to " "%d\n", state); return -ENODEV; } + udelay(1); } return 0; @@ -1526,10 +1646,10 @@ static void dsi_complexio_uninit(void) static int _dsi_wait_reset(void) { - int i = 0; + int t = 0; while (REG_GET(DSI_SYSSTATUS, 0, 0) == 0) { - if (i++ > 5) { + if (++t > 5) { DSSERR("soft reset failed\n"); return -ENODEV; } @@ -1999,7 +2119,7 @@ static int dsi_vc_send_short(int channel, u8 data_type, u16 data, u8 ecc) return -EINVAL; } - data_id = data_type | channel << 6; + data_id = data_type | dsi.vc[channel].dest_per << 6; r = (data_id << 0) | (data << 8) | (ecc << 24); @@ -2011,7 +2131,7 @@ static int dsi_vc_send_short(int channel, u8 data_type, u16 data, u8 ecc) int dsi_vc_send_null(int channel) { u8 nullpkg[] = {0, 0, 0, 0}; - return dsi_vc_send_long(0, DSI_DT_NULL_PACKET, nullpkg, 4, 0); + return dsi_vc_send_long(channel, DSI_DT_NULL_PACKET, nullpkg, 4, 0); } EXPORT_SYMBOL(dsi_vc_send_null); @@ -2058,7 +2178,7 @@ int dsi_vc_dcs_read(int channel, u8 dcs_cmd, u8 *buf, int buflen) int r; if (dsi.debug_read) - DSSDBG("dsi_vc_dcs_read(ch%d, dcs_cmd %u)\n", channel, dcs_cmd); + DSSDBG("dsi_vc_dcs_read(ch%d, dcs_cmd %x)\n", channel, dcs_cmd); r = dsi_vc_send_short(channel, DSI_DT_DCS_READ, dcs_cmd, 0); if (r) @@ -2586,7 +2706,6 @@ static int dsi_update_screen_l4(struct omap_dss_device *dssdev, /* using fifo not empty */ /* TX_FIFO_NOT_EMPTY */ while (FLD_GET(dsi_read_reg(DSI_VC_CTRL(0)), 5, 5)) { - udelay(1); fifo_stalls++; if (fifo_stalls > 0xfffff) { DSSERR("fifo stalls overflow, pixels left %d\n", @@ -2594,6 +2713,7 @@ static int dsi_update_screen_l4(struct omap_dss_device *dssdev, dsi_if_enable(0); return -EIO; } + udelay(1); } #elif 1 /* using fifo emptiness */ @@ -2812,11 +2932,15 @@ static int dsi_set_update_mode(struct omap_dss_device *dssdev, static int dsi_set_te(struct omap_dss_device *dssdev, bool enable) { - int r; - r = dssdev->driver->enable_te(dssdev, enable); - /* XXX for some reason, DSI TE breaks if we don't wait here. - * Panel bug? Needs more studying */ - msleep(100); + int r = 0; + + if (dssdev->driver->enable_te) { + r = dssdev->driver->enable_te(dssdev, enable); + /* XXX for some reason, DSI TE breaks if we don't wait here. + * Panel bug? Needs more studying */ + msleep(100); + } + return r; } @@ -3637,6 +3761,11 @@ int dsi_init(struct platform_device *pdev) spin_lock_init(&dsi.errors_lock); dsi.errors = 0; +#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS + spin_lock_init(&dsi.irq_stats_lock); + dsi.irq_stats.last_reset = jiffies; +#endif + init_completion(&dsi.bta_completion); init_completion(&dsi.update_completion); |