Merge remote-tracking branch 'asoc/topic/arizona' into asoc-next

4 files changed, 268 insertions, 0 deletions

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 7c0f1ecfdd7a..104a7c3153c0 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 83fe6f5b77d1..5ea769eda999 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 000000000000..7a04f54ef961
--- /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 1b48f2094806..75619711a9e7 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" },