6 files changed, 375 insertions, 63 deletions

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 7c0f1ec..104a7c3 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -72,6 +72,16 @@ config INPUT_AD714X_SPI
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad714x-spi.
 
+config INPUT_ARIZONA_HAPTICS
+	tristate "Arizona haptics support"
+	depends on MFD_ARIZONA && SND_SOC
+	select INPUT_FF_MEMLESS
+	help
+	  Say Y to enable support for the haptics module in Arizona CODECs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called arizona-haptics.
+
 config INPUT_BMA150
 	tristate "BMA150/SMB380 acceleration sensor support"
 	depends on I2C
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index 83fe6f5..5ea769e 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_INPUT_ADXL34X)		+= adxl34x.o
 obj-$(CONFIG_INPUT_ADXL34X_I2C)		+= adxl34x-i2c.o
 obj-$(CONFIG_INPUT_ADXL34X_SPI)		+= adxl34x-spi.o
 obj-$(CONFIG_INPUT_APANEL)		+= apanel.o
+obj-$(CONFIG_INPUT_ARIZONA_HAPTICS)	+= arizona-haptics.o
 obj-$(CONFIG_INPUT_ATI_REMOTE2)		+= ati_remote2.o
 obj-$(CONFIG_INPUT_ATLAS_BTNS)		+= atlas_btns.o
 obj-$(CONFIG_INPUT_BFIN_ROTARY)		+= bfin_rotary.o
diff --git a/drivers/input/misc/arizona-haptics.c b/drivers/input/misc/arizona-haptics.c
new file mode 100644
index 0000000..7a04f54
--- /dev/null
+++ b/drivers/input/misc/arizona-haptics.c
@@ -0,0 +1,255 @@
+/*
+ * Arizona haptics driver
+ *
+ * Copyright 2012 Wolfson Microelectronics plc
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <linux/mfd/arizona/core.h>
+#include <linux/mfd/arizona/pdata.h>
+#include <linux/mfd/arizona/registers.h>
+
+struct arizona_haptics {
+	struct arizona *arizona;
+	struct input_dev *input_dev;
+	struct work_struct work;
+
+	struct mutex mutex;
+	u8 intensity;
+};
+
+static void arizona_haptics_work(struct work_struct *work)
+{
+	struct arizona_haptics *haptics = container_of(work,
+						       struct arizona_haptics,
+						       work);
+	struct arizona *arizona = haptics->arizona;
+	struct mutex *dapm_mutex = &arizona->dapm->card->dapm_mutex;
+	int ret;
+
+	if (!haptics->arizona->dapm) {
+		dev_err(arizona->dev, "No DAPM context\n");
+		return;
+	}
+
+	if (haptics->intensity) {
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_HAPTICS_PHASE_2_INTENSITY,
+					 ARIZONA_PHASE2_INTENSITY_MASK,
+					 haptics->intensity);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to set intensity: %d\n",
+				ret);
+			return;
+		}
+
+		/* This enable sequence will be a noop if already enabled */
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_HAPTICS_CONTROL_1,
+					 ARIZONA_HAP_CTRL_MASK,
+					 1 << ARIZONA_HAP_CTRL_SHIFT);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to start haptics: %d\n",
+				ret);
+			return;
+		}
+
+		mutex_lock_nested(dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+
+		ret = snd_soc_dapm_enable_pin(arizona->dapm, "HAPTICS");
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to start HAPTICS: %d\n",
+				ret);
+			mutex_unlock(dapm_mutex);
+			return;
+		}
+
+		ret = snd_soc_dapm_sync(arizona->dapm);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to sync DAPM: %d\n",
+				ret);
+			mutex_unlock(dapm_mutex);
+			return;
+		}
+
+		mutex_unlock(dapm_mutex);
+
+	} else {
+		/* This disable sequence will be a noop if already enabled */
+		mutex_lock_nested(dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+
+		ret = snd_soc_dapm_disable_pin(arizona->dapm, "HAPTICS");
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to disable HAPTICS: %d\n",
+				ret);
+			mutex_unlock(dapm_mutex);
+			return;
+		}
+
+		ret = snd_soc_dapm_sync(arizona->dapm);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to sync DAPM: %d\n",
+				ret);
+			mutex_unlock(dapm_mutex);
+			return;
+		}
+
+		mutex_unlock(dapm_mutex);
+
+		ret = regmap_update_bits(arizona->regmap,
+					 ARIZONA_HAPTICS_CONTROL_1,
+					 ARIZONA_HAP_CTRL_MASK,
+					 1 << ARIZONA_HAP_CTRL_SHIFT);
+		if (ret != 0) {
+			dev_err(arizona->dev, "Failed to stop haptics: %d\n",
+				ret);
+			return;
+		}
+	}
+}
+
+static int arizona_haptics_play(struct input_dev *input, void *data,
+				struct ff_effect *effect)
+{
+	struct arizona_haptics *haptics = input_get_drvdata(input);
+	struct arizona *arizona = haptics->arizona;
+
+	if (!arizona->dapm) {
+		dev_err(arizona->dev, "No DAPM context\n");
+		return -EBUSY;
+	}
+
+	if (effect->u.rumble.strong_magnitude) {
+		/* Scale the magnitude into the range the device supports */
+		if (arizona->pdata.hap_act) {
+			haptics->intensity =
+				effect->u.rumble.strong_magnitude >> 9;
+			if (effect->direction < 0x8000)
+				haptics->intensity += 0x7f;
+		} else {
+			haptics->intensity =
+				effect->u.rumble.strong_magnitude >> 8;
+		}
+	} else {
+		haptics->intensity = 0;
+	}
+
+	schedule_work(&haptics->work);
+
+	return 0;
+}
+
+static void arizona_haptics_close(struct input_dev *input)
+{
+	struct arizona_haptics *haptics = input_get_drvdata(input);
+	struct mutex *dapm_mutex = &haptics->arizona->dapm->card->dapm_mutex;
+
+	cancel_work_sync(&haptics->work);
+
+	mutex_lock_nested(dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+
+	if (haptics->arizona->dapm)
+		snd_soc_dapm_disable_pin(haptics->arizona->dapm, "HAPTICS");
+
+	mutex_unlock(dapm_mutex);
+}
+
+static int arizona_haptics_probe(struct platform_device *pdev)
+{
+	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
+	struct arizona_haptics *haptics;
+	int ret;
+
+	haptics = devm_kzalloc(&pdev->dev, sizeof(*haptics), GFP_KERNEL);
+	if (!haptics)
+		return -ENOMEM;
+
+	haptics->arizona = arizona;
+
+	ret = regmap_update_bits(arizona->regmap, ARIZONA_HAPTICS_CONTROL_1,
+				 ARIZONA_HAP_ACT, arizona->pdata.hap_act);
+	if (ret != 0) {
+		dev_err(arizona->dev, "Failed to set haptics actuator: %d\n",
+			ret);
+		return ret;
+	}
+
+	INIT_WORK(&haptics->work, arizona_haptics_work);
+
+	haptics->input_dev = input_allocate_device();
+	if (haptics->input_dev == NULL) {
+		dev_err(arizona->dev, "Failed to allocate input device\n");
+		return -ENOMEM;
+	}
+
+	input_set_drvdata(haptics->input_dev, haptics);
+
+	haptics->input_dev->name = "arizona:haptics";
+	haptics->input_dev->dev.parent = pdev->dev.parent;
+	haptics->input_dev->close = arizona_haptics_close;
+	__set_bit(FF_RUMBLE, haptics->input_dev->ffbit);
+
+	ret = input_ff_create_memless(haptics->input_dev, NULL,
+				      arizona_haptics_play);
+	if (ret < 0) {
+		dev_err(arizona->dev, "input_ff_create_memless() failed: %d\n",
+			ret);
+		goto err_ialloc;
+	}
+
+	ret = input_register_device(haptics->input_dev);
+	if (ret < 0) {
+		dev_err(arizona->dev, "couldn't register input device: %d\n",
+			ret);
+		goto err_iff;
+	}
+
+	platform_set_drvdata(pdev, haptics);
+
+	return 0;
+
+err_iff:
+	if (haptics->input_dev)
+		input_ff_destroy(haptics->input_dev);
+err_ialloc:
+	input_free_device(haptics->input_dev);
+
+	return ret;
+}
+
+static int arizona_haptics_remove(struct platform_device *pdev)
+{
+	struct arizona_haptics *haptics = platform_get_drvdata(pdev);
+
+	input_unregister_device(haptics->input_dev);
+
+	return 0;
+}
+
+static struct platform_driver arizona_haptics_driver = {
+	.probe		= arizona_haptics_probe,
+	.remove		= arizona_haptics_remove,
+	.driver		= {
+		.name	= "arizona-haptics",
+		.owner	= THIS_MODULE,
+	},
+};
+module_platform_driver(arizona_haptics_driver);
+
+MODULE_ALIAS("platform:arizona-haptics");
+MODULE_DESCRIPTION("Arizona haptics driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index 1a6f943..c784f46 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -272,6 +272,7 @@ static struct mfd_cell early_devs[] = {
 static struct mfd_cell wm5102_devs[] = {
 	{ .name = "arizona-extcon" },
 	{ .name = "arizona-gpio" },
+	{ .name = "arizona-haptics" },
 	{ .name = "arizona-micsupp" },
 	{ .name = "arizona-pwm" },
 	{ .name = "wm5102-codec" },
@@ -280,6 +281,7 @@ static struct mfd_cell wm5102_devs[] = {
 static struct mfd_cell wm5110_devs[] = {
 	{ .name = "arizona-extcon" },
 	{ .name = "arizona-gpio" },
+	{ .name = "arizona-haptics" },
 	{ .name = "arizona-micsupp" },
 	{ .name = "arizona-pwm" },
 	{ .name = "wm5110-codec" },
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index c7f62ac..bcb226f 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -401,13 +401,19 @@ static const struct reg_default wm1811_reva_patch[] = {
  */
 static int wm8994_device_init(struct wm8994 *wm8994, int irq)
 {
-	struct wm8994_pdata *pdata = wm8994->dev->platform_data;
+	struct wm8994_pdata *pdata;
 	struct regmap_config *regmap_config;
 	const struct reg_default *regmap_patch = NULL;
 	const char *devname;
 	int ret, i, patch_regs;
 	int pulls = 0;
 
+	if (dev_get_platdata(wm8994->dev)) {
+		pdata = dev_get_platdata(wm8994->dev);
+		wm8994->pdata = *pdata;
+	}
+	pdata = &wm8994->pdata;
+
 	dev_set_drvdata(wm8994->dev, wm8994);
 
 	/* Add the on-chip regulators first for bootstrapping */
@@ -604,24 +610,21 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
 		}
 	}
 
-	if (pdata) {
-		wm8994->irq_base = pdata->irq_base;
-		wm8994->gpio_base = pdata->gpio_base;
-
-		/* GPIO configuration is only applied if it's non-zero */
-		for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
-			if (pdata->gpio_defaults[i]) {
-				wm8994_set_bits(wm8994, WM8994_GPIO_1 + i,
-						0xffff,
-						pdata->gpio_defaults[i]);
-			}
+	wm8994->irq_base = pdata->irq_base;
+	wm8994->gpio_base = pdata->gpio_base;
+
+	/* GPIO configuration is only applied if it's non-zero */
+	for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
+		if (pdata->gpio_defaults[i]) {
+			wm8994_set_bits(wm8994, WM8994_GPIO_1 + i,
+					0xffff, pdata->gpio_defaults[i]);
 		}
+	}
 
-		wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven;
+	wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven;
 
-		if (pdata->spkmode_pu)
-			pulls |= WM8994_SPKMODE_PU;
-	}
+	if (pdata->spkmode_pu)
+		pulls |= WM8994_SPKMODE_PU;
 
 	/* Disable unneeded pulls */
 	wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c
index c58f9ab..158da5a 100644
--- a/drivers/misc/atmel-ssc.c
+++ b/drivers/misc/atmel-ssc.c
@@ -18,6 +18,8 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 
+#include <linux/of.h>
+
 /* Serialize access to ssc_list and user count */
 static DEFINE_SPINLOCK(user_lock);
 static LIST_HEAD(ssc_list);
@@ -29,7 +31,13 @@ struct ssc_device *ssc_request(unsigned int ssc_num)
 
 	spin_lock(&user_lock);
 	list_for_each_entry(ssc, &ssc_list, list) {
-		if (ssc->pdev->id == ssc_num) {
+		if (ssc->pdev->dev.of_node) {
+			if (of_alias_get_id(ssc->pdev->dev.of_node, "ssc")
+				== ssc_num) {
+				ssc_valid = 1;
+				break;
+			}
+		} else if (ssc->pdev->id == ssc_num) {
 			ssc_valid = 1;
 			break;
 		}
@@ -68,39 +76,93 @@ void ssc_free(struct ssc_device *ssc)
 }
 EXPORT_SYMBOL(ssc_free);
 
-static int __init ssc_probe(struct platform_device *pdev)
+static struct atmel_ssc_platform_data at91rm9200_config = {
+	.use_dma = 0,
+};
+
+static struct atmel_ssc_platform_data at91sam9g45_config = {
+	.use_dma = 1,
+};
+
+static const struct platform_device_id atmel_ssc_devtypes[] = {
+	{
+		.name = "at91rm9200_ssc",
+		.driver_data = (unsigned long) &at91rm9200_config,
+	}, {
+		.name = "at91sam9g45_ssc",
+		.driver_data = (unsigned long) &at91sam9g45_config,
+	}, {
+		/* sentinel */
+	}
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id atmel_ssc_dt_ids[] = {
+	{
+		.compatible = "atmel,at91rm9200-ssc",
+		.data = &at91rm9200_config,
+	}, {
+		.compatible = "atmel,at91sam9g45-ssc",
+		.data = &at91sam9g45_config,
+	}, {
+		/* sentinel */
+	}
+};
+MODULE_DEVICE_TABLE(of, atmel_ssc_dt_ids);
+#endif
+
+static inline const struct atmel_ssc_platform_data * __init
+	atmel_ssc_get_driver_data(struct platform_device *pdev)
+{
+	if (pdev->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_node(atmel_ssc_dt_ids, pdev->dev.of_node);
+		if (match == NULL)
+			return NULL;
+		return match->data;
+	}
+
+	return (struct atmel_ssc_platform_data *)
+		platform_get_device_id(pdev)->driver_data;
+}
+
+static int ssc_probe(struct platform_device *pdev)
 {
-	int retval = 0;
 	struct resource *regs;
 	struct ssc_device *ssc;
+	const struct atmel_ssc_platform_data *plat_dat;
 
-	ssc = kzalloc(sizeof(struct ssc_device), GFP_KERNEL);
+	ssc = devm_kzalloc(&pdev->dev, sizeof(struct ssc_device), GFP_KERNEL);
 	if (!ssc) {
 		dev_dbg(&pdev->dev, "out of memory\n");
-		retval = -ENOMEM;
-		goto out;
+		return -ENOMEM;
 	}
 
+	ssc->pdev = pdev;
+
+	plat_dat = atmel_ssc_get_driver_data(pdev);
+	if (!plat_dat)
+		return -ENODEV;
+	ssc->pdata = (struct atmel_ssc_platform_data *)plat_dat;
+
 	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!regs) {
 		dev_dbg(&pdev->dev, "no mmio resource defined\n");
-		retval = -ENXIO;
-		goto out_free;
+		return -ENXIO;
 	}
 
-	ssc->clk = clk_get(&pdev->dev, "pclk");
-	if (IS_ERR(ssc->clk)) {
-		dev_dbg(&pdev->dev, "no pclk clock defined\n");
-		retval = -ENXIO;
-		goto out_free;
-	}
-
-	ssc->pdev = pdev;
-	ssc->regs = ioremap(regs->start, resource_size(regs));
+	ssc->regs = devm_request_and_ioremap(&pdev->dev, regs);
 	if (!ssc->regs) {
 		dev_dbg(&pdev->dev, "ioremap failed\n");
-		retval = -EINVAL;
-		goto out_clk;
+		return -EINVAL;
+	}
+
+	ssc->phybase = regs->start;
+
+	ssc->clk = devm_clk_get(&pdev->dev, "pclk");
+	if (IS_ERR(ssc->clk)) {
+		dev_dbg(&pdev->dev, "no pclk clock defined\n");
+		return -ENXIO;
 	}
 
 	/* disable all interrupts */
@@ -112,8 +174,7 @@ static int __init ssc_probe(struct platform_device *pdev)
 	ssc->irq = platform_get_irq(pdev, 0);
 	if (!ssc->irq) {
 		dev_dbg(&pdev->dev, "could not get irq\n");
-		retval = -ENXIO;
-		goto out_unmap;
+		return -ENXIO;
 	}
 
 	spin_lock(&user_lock);
@@ -125,16 +186,7 @@ static int __init ssc_probe(struct platform_device *pdev)
 	dev_info(&pdev->dev, "Atmel SSC device at 0x%p (irq %d)\n",
 			ssc->regs, ssc->irq);
 
-	goto out;
-
-out_unmap:
-	iounmap(ssc->regs);
-out_clk:
-	clk_put(ssc->clk);
-out_free:
-	kfree(ssc);
-out:
-	return retval;
+	return 0;
 }
 
 static int ssc_remove(struct platform_device *pdev)
@@ -142,34 +194,23 @@ static int ssc_remove(struct platform_device *pdev)
 	struct ssc_device *ssc = platform_get_drvdata(pdev);
 
 	spin_lock(&user_lock);
-	iounmap(ssc->regs);
-	clk_put(ssc->clk);
 	list_del(&ssc->list);
-	kfree(ssc);
 	spin_unlock(&user_lock);
 
 	return 0;
 }
 
 static struct platform_driver ssc_driver = {
-	.remove		= ssc_remove,
 	.driver		= {
 		.name		= "ssc",
 		.owner		= THIS_MODULE,
+		.of_match_table	= of_match_ptr(atmel_ssc_dt_ids),
 	},
+	.id_table	= atmel_ssc_devtypes,
+	.probe		= ssc_probe,
+	.remove		= ssc_remove,
 };
-
-static int __init ssc_init(void)
-{
-	return platform_driver_probe(&ssc_driver, ssc_probe);
-}
-module_init(ssc_init);
-
-static void __exit ssc_exit(void)
-{
-	platform_driver_unregister(&ssc_driver);
-}
-module_exit(ssc_exit);
+module_platform_driver(ssc_driver);
 
 MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
 MODULE_DESCRIPTION("SSC driver for Atmel AVR32 and AT91");