TPS65911: Add new irq definitions

TPS65911 adds new interrupt sources, as well as two new registers
to handle them, one for interrupt status and one for interrupt
masking. The added irqs are:

-VMBCH2 - Low and High threshold
-GPIO1-8 - Rising and falling edge detection
-WTCHDG - Watchdog interrupt
-PWRDN	- PWRDN reset interrupt

The code should handle these new registers only when the chip
version is TPS65911.

Signed-off-by: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

2 files changed, 75 insertions, 14 deletions

diff --git a/drivers/mfd/tps65910-irq.c b/drivers/mfd/tps65910-irq.c
index b8435e0..2bfad5c 100644
--- a/drivers/mfd/tps65910-irq.c
+++ b/drivers/mfd/tps65910-irq.c
@@ -41,8 +41,8 @@ static inline int irq_to_tps65910_irq(struct tps65910 *tps65910,
 static irqreturn_t tps65910_irq(int irq, void *irq_data)
 {
 	struct tps65910 *tps65910 = irq_data;
-	u16 irq_sts;
-	u16 irq_mask;
+	u32 irq_sts;
+	u32 irq_mask;
 	u8 reg;
 	int i;
 
@@ -50,18 +50,28 @@ static irqreturn_t tps65910_irq(int irq, void *irq_data)
 	irq_sts = reg;
 	tps65910->read(tps65910, TPS65910_INT_STS2, 1, &reg);
 	irq_sts |= reg << 8;
+	switch (tps65910_chip_id(tps65910)) {
+	case TPS65911:
+		tps65910->read(tps65910, TPS65910_INT_STS3, 1, &reg);
+		irq_sts |= reg << 16;
+	}
 
 	tps65910->read(tps65910, TPS65910_INT_MSK, 1, &reg);
 	irq_mask = reg;
 	tps65910->read(tps65910, TPS65910_INT_MSK2, 1, &reg);
 	irq_mask |= reg << 8;
+	switch (tps65910_chip_id(tps65910)) {
+	case TPS65911:
+		tps65910->read(tps65910, TPS65910_INT_MSK3, 1, &reg);
+		irq_mask |= reg << 16;
+	}
 
 	irq_sts &= ~irq_mask;
 
 	if (!irq_sts)
 		return IRQ_NONE;
 
-	for (i = 0; i < TPS65910_NUM_IRQ; i++) {
+	for (i = 0; i < tps65910->irq_num; i++) {
 
 		if (!(irq_sts & (1 << i)))
 			continue;
@@ -71,9 +81,15 @@ static irqreturn_t tps65910_irq(int irq, void *irq_data)
 
 	/* Write the STS register back to clear IRQs we handled */
 	reg = irq_sts & 0xFF;
+	irq_sts >>= 8;
 	tps65910->write(tps65910, TPS65910_INT_STS, 1, &reg);
-	reg = irq_sts >> 8;
+	reg = irq_sts & 0xFF;
 	tps65910->write(tps65910, TPS65910_INT_STS2, 1, &reg);
+	switch (tps65910_chip_id(tps65910)) {
+	case TPS65911:
+		reg = irq_sts >> 8;
+		tps65910->write(tps65910, TPS65910_INT_STS3, 1, &reg);
+	}
 
 	return IRQ_HANDLED;
 }
@@ -88,19 +104,29 @@ static void tps65910_irq_lock(struct irq_data *data)
 static void tps65910_irq_sync_unlock(struct irq_data *data)
 {
 	struct tps65910 *tps65910 = irq_data_get_irq_chip_data(data);
-	u16 reg_mask;
+	u32 reg_mask;
 	u8 reg;
 
 	tps65910->read(tps65910, TPS65910_INT_MSK, 1, &reg);
 	reg_mask = reg;
 	tps65910->read(tps65910, TPS65910_INT_MSK2, 1, &reg);
 	reg_mask |= reg << 8;
+	switch (tps65910_chip_id(tps65910)) {
+	case TPS65911:
+		tps65910->read(tps65910, TPS65910_INT_MSK3, 1, &reg);
+		reg_mask |= reg << 16;
+	}
 
 	if (tps65910->irq_mask != reg_mask) {
 		reg = tps65910->irq_mask & 0xFF;
 		tps65910->write(tps65910, TPS65910_INT_MSK, 1, &reg);
-		reg = tps65910->irq_mask >> 8;
+		reg = tps65910->irq_mask >> 8 & 0xFF;
 		tps65910->write(tps65910, TPS65910_INT_MSK2, 1, &reg);
+		switch (tps65910_chip_id(tps65910)) {
+		case TPS65911:
+			reg = tps65910->irq_mask >> 16;
+			tps65910->write(tps65910, TPS65910_INT_MSK3, 1, &reg);
+		}
 	}
 	mutex_unlock(&tps65910->irq_lock);
 }
@@ -132,7 +158,6 @@ int tps65910_irq_init(struct tps65910 *tps65910, int irq,
 {
 	int ret, cur_irq;
 	int flags = IRQF_ONESHOT;
-	u8 reg;
 
 	if (!irq) {
 		dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n");
@@ -144,19 +169,22 @@ int tps65910_irq_init(struct tps65910 *tps65910, int irq,
 		return -EINVAL;
 	}
 
-	/* Mask top level interrupts */
-	reg = 0xFF;
-	tps65910->write(tps65910, TPS65910_INT_MSK, 1, &reg);
-	reg = 0x03;
-	tps65910->write(tps65910, TPS65910_INT_MSK2, 1, &reg);
+	tps65910->irq_mask = 0xFFFFFF;
 
 	mutex_init(&tps65910->irq_lock);
 	tps65910->chip_irq = irq;
 	tps65910->irq_base = pdata->irq_base;
 
+	switch (tps65910_chip_id(tps65910)) {
+	case TPS65910:
+		tps65910->irq_num = TPS65910_NUM_IRQ;
+	case TPS65911:
+		tps65910->irq_num = TPS65911_NUM_IRQ;
+	}
+
 	/* Register with genirq */
 	for (cur_irq = tps65910->irq_base;
-	     cur_irq < TPS65910_NUM_IRQ + tps65910->irq_base;
+	     cur_irq < tps65910->irq_num + tps65910->irq_base;
 	     cur_irq++) {
 		irq_set_chip_data(cur_irq, tps65910);
 		irq_set_chip_and_handler(cur_irq, &tps65910_irq_chip,
@@ -174,6 +202,9 @@ int tps65910_irq_init(struct tps65910 *tps65910, int irq,
 
 	ret = request_threaded_irq(irq, NULL, tps65910_irq, flags,
 				   "tps65910", tps65910);
+
+	irq_set_irq_type(irq, IRQ_TYPE_LEVEL_LOW);
+
 	if (ret != 0)
 		dev_err(tps65910->dev, "Failed to request IRQ: %d\n", ret);
 
diff --git a/include/linux/mfd/tps65910.h b/include/linux/mfd/tps65910.h
index 20359e6..32bb7b8 100644
--- a/include/linux/mfd/tps65910.h
+++ b/include/linux/mfd/tps65910.h
@@ -763,6 +763,35 @@
 #define TPS65910_IRQ_GPIO_F				9
 #define TPS65910_NUM_IRQ				10
 
+#define TPS65911_IRQ_VBAT_VMBDCH			0
+#define TPS65911_IRQ_VBAT_VMBDCH2L			1
+#define TPS65911_IRQ_VBAT_VMBDCH2H			2
+#define TPS65911_IRQ_VBAT_VMHI				3
+#define TPS65911_IRQ_PWRON				4
+#define TPS65911_IRQ_PWRON_LP				5
+#define TPS65911_IRQ_PWRHOLD_F				6
+#define TPS65911_IRQ_PWRHOLD_R				7
+#define TPS65911_IRQ_HOTDIE				8
+#define TPS65911_IRQ_RTC_ALARM				9
+#define TPS65911_IRQ_RTC_PERIOD				10
+#define TPS65911_IRQ_GPIO0_R				11
+#define TPS65911_IRQ_GPIO0_F				12
+#define TPS65911_IRQ_GPIO1_R				13
+#define TPS65911_IRQ_GPIO1_F				14
+#define TPS65911_IRQ_GPIO2_R				15
+#define TPS65911_IRQ_GPIO2_F				16
+#define TPS65911_IRQ_GPIO3_R				17
+#define TPS65911_IRQ_GPIO3_F				18
+#define TPS65911_IRQ_GPIO4_R				19
+#define TPS65911_IRQ_GPIO4_F				20
+#define TPS65911_IRQ_GPIO5_R				21
+#define TPS65911_IRQ_GPIO5_F				22
+#define TPS65911_IRQ_WTCHDG				23
+#define TPS65911_IRQ_PWRDN				24
+
+#define TPS65911_NUM_IRQ				25
+
+
 /* GPIO Register Definitions */
 #define TPS65910_GPIO_DEB				BIT(2)
 #define TPS65910_GPIO_PUEN				BIT(3)
@@ -806,7 +835,8 @@ struct tps65910 {
 	struct mutex irq_lock;
 	int chip_irq;
 	int irq_base;
-	u16 irq_mask;
+	int irq_num;
+	u32 irq_mask;
 };
 
 struct tps65910_platform_data {