mfd: Use genirq in 88pm860x

Use genirq to simplify IRQ handling in 88pm860x. Remove the interface of
mask/free IRQs on 88pm860x. All these work is taken by genirq. Update the
touchscreen driver of 88pm860x since IRQ handling is changed.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/input/touchscreen/88pm860x-ts.c

@@ -54,7 +54,6 @@ static irqreturn_t pm860x_touch_handler(int irq, void *data)
 	int z1, z2, rt = 0;
 	int ret;
 
-	pm860x_mask_irq(chip, irq);
 	ret = pm860x_bulk_read(touch->i2c, MEAS_TSIX_1, MEAS_LEN, buf);
 	if (ret < 0)
 		goto out;
@@ -83,7 +82,6 @@ static irqreturn_t pm860x_touch_handler(int irq, void *data)
 		dev_dbg(chip->dev, "pen release\n");
 	}
 	input_sync(touch->idev);
-	pm860x_unmask_irq(chip, irq);
 
 out:
 	return IRQ_HANDLED;
@@ -92,7 +90,6 @@ out:
 static int pm860x_touch_open(struct input_dev *dev)
 {
 	struct pm860x_touch *touch = input_get_drvdata(dev);
-	struct pm860x_chip *chip = touch->chip;
 	int data, ret;
 
 	data = MEAS_PD_EN | MEAS_TSIX_EN | MEAS_TSIY_EN
@@ -100,7 +97,6 @@ static int pm860x_touch_open(struct input_dev *dev)
 	ret = pm860x_set_bits(touch->i2c, MEAS_EN3, data, data);
 	if (ret < 0)
 		goto out;
-	pm860x_unmask_irq(chip, touch->irq);
 	return 0;
 out:
 	return ret;
@@ -109,13 +105,11 @@ out:
 static void pm860x_touch_close(struct input_dev *dev)
 {
 	struct pm860x_touch *touch = input_get_drvdata(dev);
-	struct pm860x_chip *chip = touch->chip;
 	int data;
 
 	data = MEAS_PD_EN | MEAS_TSIX_EN | MEAS_TSIY_EN
 		| MEAS_TSIZ1_EN | MEAS_TSIZ2_EN;
 	pm860x_set_bits(touch->i2c, MEAS_EN3, data, 0);
-	pm860x_mask_irq(chip, touch->irq);
 }
 
 static int __devinit pm860x_touch_probe(struct platform_device *pdev)
@@ -164,11 +158,12 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev)
 	touch->idev->close = pm860x_touch_close;
 	touch->chip = chip;
 	touch->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
-	touch->irq = irq;
+	touch->irq = irq + chip->irq_base;
 	touch->res_x = pdata->res_x;
 	input_set_drvdata(touch->idev, touch);
 
-	ret = pm860x_request_irq(chip, irq, pm860x_touch_handler, touch);
+	ret = request_threaded_irq(touch->irq, NULL, pm860x_touch_handler,
+				   IRQF_ONESHOT, "touch", touch);
 	if (ret < 0)
 		goto out_irq;
 
@@ -194,7 +189,7 @@ static int __devinit pm860x_touch_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, touch);
 	return 0;
 out_rg:
-	pm860x_free_irq(chip, irq);
+	free_irq(touch->irq, touch);
 out_irq:
 	input_free_device(touch->idev);
 out:
@@ -207,7 +202,7 @@ static int __devexit pm860x_touch_remove(struct platform_device *pdev)
 	struct pm860x_touch *touch = platform_get_drvdata(pdev);
 
 	input_unregister_device(touch->idev);
-	pm860x_free_irq(touch->chip, touch->irq);
+	free_irq(touch->irq, touch);
 	platform_set_drvdata(pdev, NULL);
 	kfree(touch);
 	return 0;

include/linux/mfd/88pm860x.h

@@ -262,12 +262,13 @@ enum {
 
 /* Interrupt Number in 88PM8607 */
 enum {
-	PM8607_IRQ_ONKEY = 0,
+	PM8607_IRQ_ONKEY,
 	PM8607_IRQ_EXTON,
 	PM8607_IRQ_CHG,
 	PM8607_IRQ_BAT,
 	PM8607_IRQ_RTC,
-	PM8607_IRQ_VBAT = 8,
+	PM8607_IRQ_CC,
+	PM8607_IRQ_VBAT,
 	PM8607_IRQ_VCHG,
 	PM8607_IRQ_VSYS,
 	PM8607_IRQ_TINT,
@@ -275,7 +276,7 @@ enum {
 	PM8607_IRQ_GPADC1,
 	PM8607_IRQ_GPADC2,
 	PM8607_IRQ_GPADC3,
-	PM8607_IRQ_AUDIO_SHORT = 16,
+	PM8607_IRQ_AUDIO_SHORT,
 	PM8607_IRQ_PEN,
 	PM8607_IRQ_HEADSET,
 	PM8607_IRQ_HOOK,
@@ -291,26 +292,19 @@ enum {
 	PM8607_CHIP_B0 = 0x48,
 };
 
-#define PM860X_NUM_IRQ		24
-
-struct pm860x_irq {
-	irq_handler_t		handler;
-	void			*data;
-};
-
 struct pm860x_chip {
 	struct device		*dev;
 	struct mutex		io_lock;
 	struct mutex		irq_lock;
 	struct i2c_client	*client;
 	struct i2c_client	*companion;	/* companion chip client */
-	struct pm860x_irq	irq[PM860X_NUM_IRQ];
 
 	int			buck3_double;	/* DVC ramp slope double */
 	unsigned short		companion_addr;
 	int			id;
 	int			irq_mode;
-	int			chip_irq;
+	int			irq_base;
+	int			core_irq;
 	unsigned char		chip_version;
 
 };
@@ -347,14 +341,20 @@ struct pm860x_touch_pdata {
 	unsigned long	flags;
 };
 
+struct pm860x_power_pdata {
+	unsigned	fast_charge;	/* charge current */
+};
+
 struct pm860x_platform_data {
 	struct pm860x_backlight_pdata	*backlight;
 	struct pm860x_led_pdata		*led;
 	struct pm860x_touch_pdata	*touch;
+	struct pm860x_power_pdata	*power;
 
 	unsigned short	companion_addr;	/* I2C address of companion chip */
 	int		i2c_port;	/* Controlled by GI2C or PI2C */
 	int		irq_mode;	/* Clear interrupt by read/write(0/1) */
+	int		irq_base;	/* IRQ base number of 88pm860x */
 	struct regulator_init_data *regulator[PM8607_MAX_REGULATOR];
 };
 
@@ -368,12 +368,6 @@ extern int pm860x_bulk_write(struct i2c_client *, int, int, unsigned char *);
 extern int pm860x_set_bits(struct i2c_client *, int, unsigned char,
 			   unsigned char);
 
-extern int pm860x_mask_irq(struct pm860x_chip *, int);
-extern int pm860x_unmask_irq(struct pm860x_chip *, int);
-extern int pm860x_request_irq(struct pm860x_chip *, int,
-			      irq_handler_t handler, void *);
-extern int pm860x_free_irq(struct pm860x_chip *, int);
-
 extern int pm860x_device_init(struct pm860x_chip *chip,
 			      struct pm860x_platform_data *pdata);
 extern void pm860x_device_exit(struct pm860x_chip *chip);