CW integration and minnow bringup

  * create minnow machine type
  * create Android makefile
  * add pre-commit syntax check
  * enable -Werror
  * Add drivers: CPCAP, TPS65xxx, m4sensorhub, atmxt, lm3535,
                 usb gadget, minnow display, TI 12xx wireless

Change-Id: I7962f5e1256715f2452aed5a62a4f2f2383d5046

1 files changed, 224 insertions, 0 deletions

diff --git a/drivers/misc/vib-gpio.c b/drivers/misc/vib-gpio.c
new file mode 100644
index 00000000000..d80d34db9f3
--- /dev/null
+++ b/drivers/misc/vib-gpio.c
@@ -0,0 +1,224 @@
+/* drivers/misc/vib-gpio.c
+ *
+ * Copyright (C) 2009 Motorola, Inc.
+ * Copyright (C) 2008 Google, Inc.
+ * Author: Mike Lockwood <lockwood@android.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/hrtimer.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/vib-gpio.h>
+#include <linux/workqueue.h>
+#include <linux/slab.h>
+
+/* TODO: replace with correct header */
+#include "../staging/android/timed_output.h"
+
+struct vib_gpio_data {
+	struct timed_output_dev dev;
+	struct work_struct vib_work;
+	struct hrtimer timer;
+	spinlock_t lock;
+
+	struct vib_gpio_platform_data *pdata;
+
+	int vib_power_state;
+	int vib_state;
+};
+
+struct vib_gpio_data *misc_data;
+
+static void vib_gpio_set(int on)
+{
+	if (on) {
+		if (misc_data->pdata->power_on && !misc_data->vib_power_state) {
+			misc_data->pdata->power_on();
+			misc_data->vib_power_state = 1;
+		}
+		if (misc_data->pdata->gpio >= 0)
+			gpio_direction_output(misc_data->pdata->gpio,
+					      misc_data->pdata->active_low ?
+						 0 : 1);
+	} else {
+		if (misc_data->pdata->gpio >= 0)
+			gpio_direction_output(misc_data->pdata->gpio,
+					      misc_data->pdata->active_low ?
+						 1 : 0);
+
+		if (misc_data->pdata->power_off && misc_data->vib_power_state) {
+			misc_data->pdata->power_off();
+			misc_data->vib_power_state = 0;
+		}
+	}
+}
+
+static void vib_gpio_update(struct work_struct *work)
+{
+	vib_gpio_set(misc_data->vib_state);
+}
+
+static enum hrtimer_restart gpio_timer_func(struct hrtimer *timer)
+{
+	struct vib_gpio_data *data =
+	    container_of(timer, struct vib_gpio_data, timer);
+	data->vib_state = 0;
+	schedule_work(&data->vib_work);
+	return HRTIMER_NORESTART;
+}
+
+static int vib_gpio_get_time(struct timed_output_dev *dev)
+{
+	struct vib_gpio_data *data =
+	    container_of(dev, struct vib_gpio_data, dev);
+
+	if (hrtimer_active(&data->timer)) {
+		ktime_t r = hrtimer_get_remaining(&data->timer);
+		struct timeval t = ktime_to_timeval(r);
+		return t.tv_sec * 1000 + t.tv_usec / 1000;
+	} else
+		return 0;
+}
+
+static void vib_gpio_enable(struct timed_output_dev *dev, int value)
+{
+	struct vib_gpio_data *data =
+	    container_of(dev, struct vib_gpio_data, dev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&data->lock, flags);
+	hrtimer_cancel(&data->timer);
+
+	if (value == 0)
+		data->vib_state = 0;
+	else {
+		value = (value > data->pdata->max_timeout ?
+				 data->pdata->max_timeout : value);
+		data->vib_state = 1;
+		hrtimer_start(&data->timer,
+			      ktime_set(value / 1000, (value % 1000) * 1000000),
+			      HRTIMER_MODE_REL);
+	}
+
+	spin_unlock_irqrestore(&data->lock, flags);
+
+	schedule_work(&data->vib_work);
+}
+
+/* This is a temporary solution until a more global haptics soltion is
+ * available for haptics that need to occur in any application */
+void vibrator_haptic_fire(int value)
+{
+	vib_gpio_enable(&misc_data->dev, value);
+}
+
+static int vib_gpio_probe(struct platform_device *pdev)
+{
+	struct vib_gpio_platform_data *pdata = pdev->dev.platform_data;
+	struct vib_gpio_data *gpio_data;
+	int ret = 0;
+
+	if (!pdata) {
+		ret = -EBUSY;
+		goto err0;
+	}
+	gpio_data = kzalloc(sizeof(struct vib_gpio_data), GFP_KERNEL);
+	if (!gpio_data) {
+		ret = -ENOMEM;
+		goto err0;
+	}
+
+	gpio_data->pdata = pdata;
+
+	INIT_WORK(&gpio_data->vib_work, vib_gpio_update);
+
+	hrtimer_init(&gpio_data->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+
+	gpio_data->timer.function = gpio_timer_func;
+	spin_lock_init(&gpio_data->lock);
+
+	gpio_data->dev.name = "vibrator";
+	gpio_data->dev.get_time = vib_gpio_get_time;
+	gpio_data->dev.enable = vib_gpio_enable;
+	ret = timed_output_dev_register(&gpio_data->dev);
+	if (ret < 0)
+		goto err1;
+
+	if (gpio_data->pdata->init)
+		ret = gpio_data->pdata->init();
+	if (ret < 0)
+		goto err2;
+
+	misc_data = gpio_data;
+	if (misc_data->pdata->gpio >= 0)
+		gpio_direction_output(gpio_data->pdata->gpio,
+				      gpio_data->pdata->active_low);
+
+	platform_set_drvdata(pdev, gpio_data);
+
+	vib_gpio_enable(&gpio_data->dev, gpio_data->pdata->initial_vibrate);
+
+	pr_info("vib gpio probe done");
+	return 0;
+
+err2:
+	timed_output_dev_unregister(&gpio_data->dev);
+err1:
+	kfree(gpio_data->pdata);
+	kfree(gpio_data);
+err0:
+	return ret;
+}
+
+static int vib_gpio_remove(struct platform_device *pdev)
+{
+	struct vib_gpio_data *gpio_data = platform_get_drvdata(pdev);
+
+	if (gpio_data->pdata->exit)
+		gpio_data->pdata->exit();
+
+	timed_output_dev_unregister(&gpio_data->dev);
+
+	kfree(gpio_data->pdata);
+	kfree(gpio_data);
+
+	return 0;
+}
+
+static struct platform_driver vib_gpio_driver = {
+	.probe = vib_gpio_probe,
+	.remove = vib_gpio_remove,
+	.driver = {
+		   .name = VIB_GPIO_NAME,
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static int __init vib_gpio_init(void)
+{
+	return platform_driver_register(&vib_gpio_driver);
+}
+
+static void __exit vib_gpio_exit(void)
+{
+	platform_driver_unregister(&vib_gpio_driver);
+}
+
+late_initcall(vib_gpio_init);
+module_exit(vib_gpio_exit);
+
+MODULE_AUTHOR("Motorola");
+MODULE_DESCRIPTION("vib gpio driver");
+MODULE_LICENSE("GPL");