Merge branch 'for-next' of git://git.o-hand.com/linux-mfd

* 'for-next' of git://git.o-hand.com/linux-mfd:
  mfd: fix da903x warning
  mfd: fix MAINTAINERS entry
  mfd: Use the value of the final spin when reading the AUXADC
  mfd: Storage class should be before const qualifier
  mfd: PASIC3: supply clock_rate to DS1WM via driver_data
  mfd: remove DS1WM clock handling
  mfd: remove unused PASIC3 bus_shift field
  pxa/magician: remove deprecated .bus_shift from PASIC3 platform_data
  mfd: convert PASIC3 to use MFD core
  mfd: convert DS1WM to use MFD core
  mfd: Support active high IRQs on WM835x
  mfd: Use bulk read to fill WM8350 register cache
  mfd: remove duplicated #include from pcf50633

MAINTAINERS

@@ -3051,8 +3051,9 @@ S:	Maintained
 
 MULTIFUNCTION DEVICES (MFD)
 P:	Samuel Ortiz
-M:	sameo@openedhand.com
+M:	sameo@linux.intel.com
 L:	linux-kernel@vger.kernel.org
+T:	git kernel.org:/pub/scm/linux/kernel/git/sameo/mfd-2.6.git
 S:	Supported
 
 MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND SDIO SUBSYSTEM

arch/arm/mach-pxa/magician.c

@@ -507,7 +507,6 @@ static struct resource pasic3_resources[] = {
 };
 
 static struct pasic3_platform_data pasic3_platform_data = {
-	.bus_shift  = 2,
 	.led_pdata  = &pasic3_leds_info,
 	.clock_rate = 4000000,
 };

drivers/mfd/Kconfig

@@ -52,6 +52,7 @@ config HTC_EGPIO
 
 config HTC_PASIC3
 	tristate "HTC PASIC3 LED/DS1WM chip support"
+	select MFD_CORE
 	help
 	  This core driver provides register access for the LED/DS1WM
 	  chips labeled "AIC2" and "AIC3", found on HTC Blueangel and

drivers/mfd/da903x.c

@@ -413,7 +413,7 @@ static void da903x_irq_work(struct work_struct *work)
 	enable_irq(chip->client->irq);
 }
 
-static int da903x_irq_handler(int irq, void *data)
+static irqreturn_t da903x_irq_handler(int irq, void *data)
 {
 	struct da903x_chip *chip = data;
 

drivers/mfd/htc-pasic3.c

@@ -12,18 +12,17 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 
-#include <linux/ds1wm.h>
 #include <linux/gpio.h>
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/ds1wm.h>
 #include <linux/mfd/htc-pasic3.h>
 
 struct pasic3_data {
 	void __iomem *mapping;
 	unsigned int bus_shift;
-	struct platform_device *ds1wm_pdev;
-	struct platform_device *led_pdev;
 };
 
 #define REG_ADDR  5
@@ -65,46 +64,15 @@ EXPORT_SYMBOL(pasic3_read_register); /* for leds-pasic3 */
  * LEDs
  */
 
-static int led_device_add(struct device *pasic3_dev,
-				const struct pasic3_leds_machinfo *pdata)
-{
-	struct pasic3_data *asic = pasic3_dev->driver_data;
-	struct platform_device *pdev;
-	int ret;
-
-	pdev = platform_device_alloc("pasic3-led", -1);
-	if (!pdev) {
-		dev_dbg(pasic3_dev, "failed to allocate LED platform device\n");
-		return -ENOMEM;
-	}
-
-	ret = platform_device_add_data(pdev, pdata,
-					sizeof(struct pasic3_leds_machinfo));
-	if (ret < 0) {
-		dev_dbg(pasic3_dev, "failed to add LED platform data\n");
-		goto exit_pdev_put;
-	}
-
-	pdev->dev.parent = pasic3_dev;
-	ret = platform_device_add(pdev);
-	if (ret < 0) {
-		dev_dbg(pasic3_dev, "failed to add LED platform device\n");
-		goto exit_pdev_put;
-	}
-
-	asic->led_pdev = pdev;
-	return 0;
-
-exit_pdev_put:
-	platform_device_put(pdev);
-	return ret;
-}
+static struct mfd_cell led_cell __initdata = {
+	.name = "leds-pasic3",
+};
 
 /*
  * DS1WM
  */
 
-static void ds1wm_enable(struct platform_device *pdev)
+static int ds1wm_enable(struct platform_device *pdev)
 {
 	struct device *dev = pdev->dev.parent;
 	int c;
@@ -113,9 +81,10 @@ static void ds1wm_enable(struct platform_device *pdev)
 	pasic3_write_register(dev, 0x28, c & 0x7f);
 
 	dev_dbg(dev, "DS1WM OWM_EN low (active) %02x\n", c & 0x7f);
+	return 0;
 }
 
-static void ds1wm_disable(struct platform_device *pdev)
+static int ds1wm_disable(struct platform_device *pdev)
 {
 	struct device *dev = pdev->dev.parent;
 	int c;
@@ -124,56 +93,33 @@ static void ds1wm_disable(struct platform_device *pdev)
 	pasic3_write_register(dev, 0x28, c | 0x80);
 
 	dev_dbg(dev, "DS1WM OWM_EN high (inactive) %02x\n", c | 0x80);
+	return 0;
 }
 
-static struct ds1wm_platform_data ds1wm_pdata = {
-	.bus_shift = 2,
-	.enable    = ds1wm_enable,
-	.disable   = ds1wm_disable,
+static struct ds1wm_driver_data ds1wm_pdata = {
+	.active_high = 0,
 };
 
-static int ds1wm_device_add(struct platform_device *pasic3_pdev, int bus_shift)
-{
-	struct device *pasic3_dev = &pasic3_pdev->dev;
-	struct pasic3_data *asic = pasic3_dev->driver_data;
-	struct platform_device *pdev;
-	int ret;
-
-	pdev = platform_device_alloc("ds1wm", -1);
-	if (!pdev) {
-		dev_dbg(pasic3_dev, "failed to allocate DS1WM platform device\n");
-		return -ENOMEM;
-	}
-
-	ret = platform_device_add_resources(pdev, pasic3_pdev->resource,
-						pasic3_pdev->num_resources);
-	if (ret < 0) {
-		dev_dbg(pasic3_dev, "failed to add DS1WM resources\n");
-		goto exit_pdev_put;
-	}
-
-	ds1wm_pdata.bus_shift = asic->bus_shift;
-	ret = platform_device_add_data(pdev, &ds1wm_pdata,
-					sizeof(struct ds1wm_platform_data));
-	if (ret < 0) {
-		dev_dbg(pasic3_dev, "failed to add DS1WM platform data\n");
-		goto exit_pdev_put;
-	}
-
-	pdev->dev.parent = pasic3_dev;
-	ret = platform_device_add(pdev);
-	if (ret < 0) {
-		dev_dbg(pasic3_dev, "failed to add DS1WM platform device\n");
-		goto exit_pdev_put;
-	}
-
-	asic->ds1wm_pdev = pdev;
-	return 0;
+static struct resource ds1wm_resources[] __initdata = {
+	[0] = {
+		.start  = 0,
+		.flags  = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start  = 0,
+		.end    = 0,
+		.flags  = IORESOURCE_IRQ,
+	},
+};
 
-exit_pdev_put:
-	platform_device_put(pdev);
-	return ret;
-}
+static struct mfd_cell ds1wm_cell __initdata = {
+	.name          = "ds1wm",
+	.enable        = ds1wm_enable,
+	.disable       = ds1wm_disable,
+	.driver_data   = &ds1wm_pdata,
+	.num_resources = 2,
+	.resources     = ds1wm_resources,
+};
 
 static int __init pasic3_probe(struct platform_device *pdev)
 {
@@ -182,12 +128,27 @@ static int __init pasic3_probe(struct platform_device *pdev)
 	struct pasic3_data *asic;
 	struct resource *r;
 	int ret;
+	int irq = 0;
+
+	r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (r) {
+		ds1wm_resources[1].flags = IORESOURCE_IRQ | (r->flags &
+			(IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE));
+		irq = r->start;
+	}
+
+	r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (r) {
+		ds1wm_resources[1].flags = IORESOURCE_IRQ | (r->flags &
+			(IORESOURCE_IRQ_HIGHEDGE | IORESOURCE_IRQ_LOWEDGE));
+		irq = r->start;
+	}
 
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!r)
 		return -ENXIO;
 
-	if (!request_mem_region(r->start, r->end - r->start + 1, "pasic3"))
+	if (!request_mem_region(r->start, resource_size(r), "pasic3"))
 		return -EBUSY;
 
 	asic = kzalloc(sizeof(struct pasic3_data), GFP_KERNEL);
@@ -196,24 +157,33 @@ static int __init pasic3_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, asic);
 
-	if (pdata && pdata->bus_shift)
-		asic->bus_shift = pdata->bus_shift;
-	else
-		asic->bus_shift = 2;
-
-	asic->mapping = ioremap(r->start, r->end - r->start + 1);
+	asic->mapping = ioremap(r->start, resource_size(r));
 	if (!asic->mapping) {
 		dev_err(dev, "couldn't ioremap PASIC3\n");
 		kfree(asic);
 		return -ENOMEM;
 	}
 
-	ret = ds1wm_device_add(pdev, asic->bus_shift);
-	if (ret < 0)
-		dev_warn(dev, "failed to register DS1WM\n");
+	/* calculate bus shift from mem resource */
+	asic->bus_shift = (resource_size(r) - 5) >> 3;
+
+	if (pdata && pdata->clock_rate) {
+		ds1wm_pdata.clock_rate = pdata->clock_rate;
+		/* the first 5 PASIC3 registers control the DS1WM */
+		ds1wm_resources[0].end = (5 << asic->bus_shift) - 1;
+		ds1wm_cell.platform_data = &ds1wm_cell;
+		ds1wm_cell.data_size = sizeof(ds1wm_cell);
+		ret = mfd_add_devices(&pdev->dev, pdev->id,
+				&ds1wm_cell, 1, r, irq);
+		if (ret < 0)
+			dev_warn(dev, "failed to register DS1WM\n");
+	}
 
-	if (pdata->led_pdata) {
-		ret = led_device_add(dev, pdata->led_pdata);
+	if (pdata && pdata->led_pdata) {
+		led_cell.driver_data = pdata->led_pdata;
+		led_cell.platform_data = &led_cell;
+		led_cell.data_size = sizeof(ds1wm_cell);
+		ret = mfd_add_devices(&pdev->dev, pdev->id, &led_cell, 1, r, 0);
 		if (ret < 0)
 			dev_warn(dev, "failed to register LED device\n");
 	}
@@ -226,14 +196,11 @@ static int pasic3_remove(struct platform_device *pdev)
 	struct pasic3_data *asic = platform_get_drvdata(pdev);
 	struct resource *r;
 
-	if (asic->led_pdev)
-		platform_device_unregister(asic->led_pdev);
-	if (asic->ds1wm_pdev)
-		platform_device_unregister(asic->ds1wm_pdev);
+	mfd_remove_devices(&pdev->dev);
 
 	iounmap(asic->mapping);
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(r->start, r->end - r->start + 1);
+	release_mem_region(r->start, resource_size(r));
 	kfree(asic);
 	return 0;
 }

drivers/mfd/pcf50633-core.c

@@ -15,7 +15,6 @@
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <linux/sysfs.h>
-#include <linux/device.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/interrupt.h>

drivers/mfd/t7l66xb.c

@@ -108,7 +108,7 @@ static int t7l66xb_mmc_disable(struct platform_device *mmc)
 
 /*--------------------------------------------------------------------------*/
 
-const static struct resource t7l66xb_mmc_resources[] = {
+static const struct resource t7l66xb_mmc_resources[] = {
 	{
 		.start = 0x800,
 		.end	= 0x9ff,
@@ -126,7 +126,7 @@ const static struct resource t7l66xb_mmc_resources[] = {
 	},
 };
 
-const static struct resource t7l66xb_nand_resources[] = {
+static const struct resource t7l66xb_nand_resources[] = {
 	{
 		.start	= 0xc00,
 		.end	= 0xc07,

drivers/mfd/tc6393xb.c

@@ -172,7 +172,7 @@ static struct resource __devinitdata tc6393xb_mmc_resources[] = {
 	},
 };
 
-const static struct resource tc6393xb_ohci_resources[] = {
+static const struct resource tc6393xb_ohci_resources[] = {
 	{
 		.start	= 0x3000,
 		.end	= 0x31ff,

drivers/mfd/twl4030-irq.c

@@ -182,7 +182,7 @@ static int twl4030_irq_thread(void *data)
 	long irq = (long)data;
 	struct irq_desc *desc = irq_to_desc(irq);
 	static unsigned i2c_errors;
-	const static unsigned max_i2c_errors = 100;
+	static const unsigned max_i2c_errors = 100;
 
 	if (!desc) {
 		pr_err("twl4030: Invalid IRQ: %ld\n", irq);

drivers/mfd/wm8350-core.c

@@ -1111,7 +1111,7 @@ int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, int vref)
 	do {
 		schedule_timeout_interruptible(1);
 		reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1);
-	} while (--tries && (reg & WM8350_AUXADC_POLL));
+	} while ((reg & WM8350_AUXADC_POLL) && --tries);
 
 	if (!tries)
 		dev_err(wm8350->dev, "adc chn %d read timeout\n", channel);
@@ -1238,7 +1238,7 @@ static int wm8350_create_cache(struct wm8350 *wm8350, int type, int mode)
 	}
 
 	wm8350->reg_cache =
-	    kzalloc(sizeof(u16) * (WM8350_MAX_REGISTER + 1), GFP_KERNEL);
+		kmalloc(sizeof(u16) * (WM8350_MAX_REGISTER + 1), GFP_KERNEL);
 	if (wm8350->reg_cache == NULL)
 		return -ENOMEM;
 
@@ -1246,17 +1246,20 @@ static int wm8350_create_cache(struct wm8350 *wm8350, int type, int mode)
 	 * a PMIC so the device many not be in a virgin state and we
 	 * can't rely on the silicon values.
 	 */
+	ret = wm8350->read_dev(wm8350, 0,
+			       sizeof(u16) * (WM8350_MAX_REGISTER + 1),
+			       wm8350->reg_cache);
+	if (ret < 0) {
+		dev_err(wm8350->dev,
+			"failed to read initial cache values\n");
+		goto out;
+	}
+
+	/* Mask out uncacheable/unreadable bits and the audio. */
 	for (i = 0; i < WM8350_MAX_REGISTER; i++) {
-		/* audio register range */
 		if (wm8350_reg_io_map[i].readable &&
 		    (i < WM8350_CLOCK_CONTROL_1 || i > WM8350_AIF_TEST)) {
-			ret = wm8350->read_dev(wm8350, i, 2, (char *)&value);
-			if (ret < 0) {
-				dev_err(wm8350->dev,
-				       "failed to read initial cache value\n");
-				goto out;
-			}
-			value = be16_to_cpu(value);
+			value = be16_to_cpu(wm8350->reg_cache[i]);
 			value &= wm8350_reg_io_map[i].readable;
 			value &= ~wm8350_reg_io_map[i].vol;
 			wm8350->reg_cache[i] = value;
@@ -1435,7 +1438,21 @@ int wm8350_device_init(struct wm8350 *wm8350, int irq,
 	mutex_init(&wm8350->irq_mutex);
 	INIT_WORK(&wm8350->irq_work, wm8350_irq_worker);
 	if (irq) {
-		ret = request_irq(irq, wm8350_irq, 0,
+		int flags = 0;
+
+		if (pdata && pdata->irq_high) {
+			flags |= IRQF_TRIGGER_HIGH;
+
+			wm8350_set_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
+					WM8350_IRQ_POL);
+		} else {
+			flags |= IRQF_TRIGGER_LOW;
+
+			wm8350_clear_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
+					  WM8350_IRQ_POL);
+		}
+
+		ret = request_irq(irq, wm8350_irq, flags,
 				  "wm8350", wm8350);
 		if (ret != 0) {
 			dev_err(wm8350->dev, "Failed to request IRQ: %d\n",

drivers/w1/masters/ds1wm.c

@@ -16,10 +16,10 @@
 #include <linux/irq.h>
 #include <linux/pm.h>
 #include <linux/platform_device.h>
-#include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/delay.h>
-#include <linux/ds1wm.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/ds1wm.h>
 
 #include <asm/io.h>
 
@@ -89,10 +89,9 @@ struct ds1wm_data {
 	void		__iomem *map;
 	int		bus_shift; /* # of shifts to calc register offsets */
 	struct platform_device *pdev;
-	struct ds1wm_platform_data *pdata;
+	struct mfd_cell	*cell;
 	int		irq;
 	int		active_high;
-	struct clk	*clk;
 	int		slave_present;
 	void		*reset_complete;
 	void		*read_complete;
@@ -215,17 +214,17 @@ static int ds1wm_find_divisor(int gclk)
 
 static void ds1wm_up(struct ds1wm_data *ds1wm_data)
 {
-	int gclk, divisor;
+	int divisor;
+	struct ds1wm_driver_data *plat = ds1wm_data->cell->driver_data;
 
-	if (ds1wm_data->pdata->enable)
-		ds1wm_data->pdata->enable(ds1wm_data->pdev);
+	if (ds1wm_data->cell->enable)
+		ds1wm_data->cell->enable(ds1wm_data->pdev);
 
-	gclk = clk_get_rate(ds1wm_data->clk);
-	clk_enable(ds1wm_data->clk);
-	divisor = ds1wm_find_divisor(gclk);
+	divisor = ds1wm_find_divisor(plat->clock_rate);
 	if (divisor == 0) {
 		dev_err(&ds1wm_data->pdev->dev,
-			"no suitable divisor for %dHz clock\n", gclk);
+			"no suitable divisor for %dHz clock\n",
+			plat->clock_rate);
 		return;
 	}
 	ds1wm_write_register(ds1wm_data, DS1WM_CLKDIV, divisor);
@@ -244,10 +243,8 @@ static void ds1wm_down(struct ds1wm_data *ds1wm_data)
 	ds1wm_write_register(ds1wm_data, DS1WM_INT_EN,
 			     ds1wm_data->active_high ? DS1WM_INTEN_IAS : 0);
 
-	if (ds1wm_data->pdata->disable)
-		ds1wm_data->pdata->disable(ds1wm_data->pdev);
-
-	clk_disable(ds1wm_data->clk);
+	if (ds1wm_data->cell->disable)
+		ds1wm_data->cell->disable(ds1wm_data->pdev);
 }
 
 /* --------------------------------------------------------------------- */
@@ -330,13 +327,18 @@ static struct w1_bus_master ds1wm_master = {
 static int ds1wm_probe(struct platform_device *pdev)
 {
 	struct ds1wm_data *ds1wm_data;
-	struct ds1wm_platform_data *plat;
+	struct ds1wm_driver_data *plat;
 	struct resource *res;
+	struct mfd_cell *cell;
 	int ret;
 
 	if (!pdev)
 		return -ENODEV;
 
+	cell = pdev->dev.platform_data;
+	if (!cell)
+		return -ENODEV;
+
 	ds1wm_data = kzalloc(sizeof(*ds1wm_data), GFP_KERNEL);
 	if (!ds1wm_data)
 		return -ENOMEM;
@@ -348,15 +350,18 @@ static int ds1wm_probe(struct platform_device *pdev)
 		ret = -ENXIO;
 		goto err0;
 	}
-	ds1wm_data->map = ioremap(res->start, res->end - res->start + 1);
+	ds1wm_data->map = ioremap(res->start, resource_size(res));
 	if (!ds1wm_data->map) {
 		ret = -ENOMEM;
 		goto err0;
 	}
-	plat = pdev->dev.platform_data;
-	ds1wm_data->bus_shift = plat->bus_shift;
+	plat = cell->driver_data;
+
+	/* calculate bus shift from mem resource */
+	ds1wm_data->bus_shift = resource_size(res) >> 3;
+
 	ds1wm_data->pdev = pdev;
-	ds1wm_data->pdata = plat;
+	ds1wm_data->cell = cell;
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (!res) {
@@ -376,26 +381,18 @@ static int ds1wm_probe(struct platform_device *pdev)
 	if (ret)
 		goto err1;
 
-	ds1wm_data->clk = clk_get(&pdev->dev, "ds1wm");
-	if (IS_ERR(ds1wm_data->clk)) {
-		ret = PTR_ERR(ds1wm_data->clk);
-		goto err2;
-	}
-
 	ds1wm_up(ds1wm_data);
 
 	ds1wm_master.data = (void *)ds1wm_data;
 
 	ret = w1_add_master_device(&ds1wm_master);
 	if (ret)
-		goto err3;
+		goto err2;
 
 	return 0;
 
-err3:
-	ds1wm_down(ds1wm_data);
-	clk_put(ds1wm_data->clk);
 err2:
+	ds1wm_down(ds1wm_data);
 	free_irq(ds1wm_data->irq, ds1wm_data);
 err1:
 	iounmap(ds1wm_data->map);
@@ -434,7 +431,6 @@ static int ds1wm_remove(struct platform_device *pdev)
 
 	w1_remove_master_device(&ds1wm_master);
 	ds1wm_down(ds1wm_data);
-	clk_put(ds1wm_data->clk);
 	free_irq(ds1wm_data->irq, ds1wm_data);
 	iounmap(ds1wm_data->map);
 	kfree(ds1wm_data);

include/linux/ds1wm.h

-/* platform data for the DS1WM driver */
-
-struct ds1wm_platform_data {
-	int bus_shift;	    /* number of shifts needed to calculate the
-			     * offset between DS1WM registers;
-			     * e.g. on h5xxx and h2200 this is 2
-			     * (registers aligned to 4-byte boundaries),
-			     * while on hx4700 this is 1 */
-	int active_high;
-	void (*enable)(struct platform_device *pdev);
-	void (*disable)(struct platform_device *pdev);
-};

include/linux/mfd/ds1wm.h

+/* MFD cell driver data for the DS1WM driver */
+
+struct ds1wm_driver_data {
+	int active_high;
+	int clock_rate;
+};

include/linux/mfd/htc-pasic3.h

@@ -48,7 +48,6 @@ struct pasic3_leds_machinfo {
 
 struct pasic3_platform_data {
 	struct pasic3_leds_machinfo *led_pdata;
-	unsigned int                 bus_shift;
 	unsigned int                 clock_rate;
 };
 

include/linux/mfd/wm8350/core.h

@@ -640,9 +640,11 @@ struct wm8350 {
  *
  * @init: Function called during driver initialisation.  Should be
  *        used by the platform to configure GPIO functions and similar.
+ * @irq_high: Set if WM8350 IRQ is active high.
  */
 struct wm8350_platform_data {
 	int (*init)(struct wm8350 *wm8350);
+	int irq_high;
 };