summaryrefslogtreecommitdiff
path: root/drivers/video/omap2/dss/dsi.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/video/omap2/dss/dsi.c')
-rw-r--r--drivers/video/omap2/dss/dsi.c159
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);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-18 22:48:13 +0300