irqchip: madera: Add handler for BOOT_DONE interrupt

This gives a place to hang a debug log that can be enabled for
debugging boots.

Change-Id: I02333ba0c0a9018e93cd3bd97367ea9fafb6afce
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>

diff --git a/drivers/irqchip/irq-madera.c b/drivers/irqchip/irq-madera.c
index d80c459cddd72fb2ab48650ef689bbee401f2f96..51353f80310ac54a33dce5d490f2af65b570fe67 100644 (file)
--- a/drivers/irqchip/irq-madera.c
+++ b/drivers/irqchip/irq-madera.c
@@ -34,7 +34,7 @@ struct madera_irq_priv {
 };
 
 #define MADERA_IRQ(_irq, _reg)                                              \
-       [MADERA_IRQ_ ## _irq] = { .reg_offset = (_reg) - MADERA_IRQ1_STATUS_2, \
+       [MADERA_IRQ_ ## _irq] = { .reg_offset = (_reg) - MADERA_IRQ1_STATUS_1, \
                                .mask = MADERA_ ## _irq ## _EINT1 }
 
 static const struct regmap_irq madera_irqs[MADERA_NUM_IRQ] = {
@@ -93,15 +93,17 @@ static const struct regmap_irq madera_irqs[MADERA_NUM_IRQ] = {
        MADERA_IRQ(DSP5_BUS_ERR,        MADERA_IRQ1_STATUS_33),
        MADERA_IRQ(DSP6_BUS_ERR,        MADERA_IRQ1_STATUS_33),
        MADERA_IRQ(DSP7_BUS_ERR,        MADERA_IRQ1_STATUS_33),
+
+       MADERA_IRQ(BOOT_DONE,           MADERA_IRQ1_STATUS_1),
 };
 
 static const struct regmap_irq_chip madera_irq = {
        .name           = "madera IRQ",
-       .status_base    = MADERA_IRQ1_STATUS_2,
-       .mask_base      = MADERA_IRQ1_MASK_2,
-       .ack_base       = MADERA_IRQ1_STATUS_2,
+       .status_base    = MADERA_IRQ1_STATUS_1,
+       .mask_base      = MADERA_IRQ1_MASK_1,
+       .ack_base       = MADERA_IRQ1_STATUS_1,
        .runtime_pm     = true,
-       .num_regs       = 32,
+       .num_regs       = 33,
        .irqs           = madera_irqs,
        .num_irqs       = ARRAY_SIZE(madera_irqs),
 };
@@ -198,6 +200,15 @@ static int madera_resume(struct device *dev)
 }
 #endif
 
+static irqreturn_t madera_boot_done(int irq, void *data)
+{
+       struct madera *madera = data;
+
+       dev_warn(madera->dev, "BOOT_DONE\n");
+
+       return IRQ_HANDLED;
+}
+
 static const struct dev_pm_ops madera_irq_pm_ops = {
        SET_SYSTEM_SLEEP_PM_OPS(madera_suspend, madera_resume)
        SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(madera_suspend_noirq,
@@ -266,6 +277,9 @@ static int madera_irq_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, priv);
        madera->irq_dev = priv->dev;
 
+       madera_request_irq(madera, MADERA_IRQ_BOOT_DONE, "BOOT_DONE",
+                         madera_boot_done, madera);
+
        return 0;
 }
 
@@ -280,6 +294,8 @@ static int madera_irq_remove(struct platform_device *pdev)
 
        priv->madera->irq_dev = NULL;
 
+       madera_free_irq(priv->madera, MADERA_IRQ_BOOT_DONE, priv->madera);
+
        regmap_del_irq_chip(priv->irq, priv->irq_data);
        free_irq(priv->irq, priv);
 

diff --git a/include/linux/irqchip/irq-madera.h b/include/linux/irqchip/irq-madera.h
index 806684628113ad3dcb2b69901d86caae30a8050d..11a71d6370af702c2fc6e666a5b7d32ef11528b3 100644 (file)
--- a/include/linux/irqchip/irq-madera.h
+++ b/include/linux/irqchip/irq-madera.h
@@ -83,8 +83,9 @@
 #define MADERA_IRQ_DSP5_BUS_ERR                69
 #define MADERA_IRQ_DSP6_BUS_ERR                70
 #define MADERA_IRQ_DSP7_BUS_ERR                71
+#define MADERA_IRQ_BOOT_DONE           72
 
-#define MADERA_NUM_IRQ                 72
+#define MADERA_NUM_IRQ                 73
 
 struct madera;