[xburst] Add 2.6.35 patches

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22463 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 249 insertions, 0 deletions

diff --git a/target/linux/xburst/patches-2.6.35/107-pwm-beeper.patch b/target/linux/xburst/patches-2.6.35/107-pwm-beeper.patch
new file mode 100644
index 0000000000..9ed00231b3
--- /dev/null
+++ b/target/linux/xburst/patches-2.6.35/107-pwm-beeper.patch
@@ -0,0 +1,249 @@
+From d7894c598e2c1e5c1d173ca808694de523f1a06a Mon Sep 17 00:00:00 2001
+From: Lars-Peter Clausen <lars@metafoo.de>
+Date: Wed, 14 Jul 2010 00:25:21 -0700
+Subject: [PATCH] Input: Add pwm beeper driver
+
+This patch adds a simple driver which allows to use pwm based beepers (for
+example piezo elements) as a pcspkr-like device.
+
+Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
+Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
+---
+ drivers/input/misc/Kconfig      |   11 ++
+ drivers/input/misc/Makefile     |    1 +
+ drivers/input/misc/pwm-beeper.c |  199 +++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 211 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/input/misc/pwm-beeper.c
+
+--- a/drivers/input/misc/Kconfig
++++ b/drivers/input/misc/Kconfig
+@@ -327,6 +327,17 @@ config INPUT_PCF8574
+ 	  To compile this driver as a module, choose M here: the
+ 	  module will be called pcf8574_keypad.
+ 
++config INPUT_PWM_BEEPER
++	tristate "PWM beeper support"
++	depends on HAVE_PWM
++	help
++	  Say Y here to get support for PWM based beeper devices.
++
++	  If unsure, say N.
++
++	  To compile this driver as a module, choose M here: the module will be
++	  called pwm-beeper.
++
+ config INPUT_GPIO_ROTARY_ENCODER
+ 	tristate "Rotary encoders connected to GPIO pins"
+ 	depends on GPIOLIB && GENERIC_GPIO
+--- a/drivers/input/misc/Makefile
++++ b/drivers/input/misc/Makefile
+@@ -26,6 +26,7 @@ obj-$(CONFIG_INPUT_PCF50633_PMU)	+= pcf5
+ obj-$(CONFIG_INPUT_PCF8574)		+= pcf8574_keypad.o
+ obj-$(CONFIG_INPUT_PCSPKR)		+= pcspkr.o
+ obj-$(CONFIG_INPUT_POWERMATE)		+= powermate.o
++obj-$(CONFIG_INPUT_PWM_BEEPER)		+= pwm-beeper.o
+ obj-$(CONFIG_INPUT_RB532_BUTTON)	+= rb532_button.o
+ obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER)	+= rotary_encoder.o
+ obj-$(CONFIG_INPUT_SGI_BTNS)		+= sgi_btns.o
+--- /dev/null
++++ b/drivers/input/misc/pwm-beeper.c
+@@ -0,0 +1,199 @@
++/*
++ *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
++ *  PWM beeper driver
++ *
++ *  This program is free software; you can redistribute it and/or modify it
++ *  under  the terms of the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the License, or (at your
++ *  option) any later version.
++ *
++ *  You should have received a copy of the GNU General Public License along
++ *  with this program; if not, write to the Free Software Foundation, Inc.,
++ *  675 Mass Ave, Cambridge, MA 02139, USA.
++ *
++ */
++
++#include <linux/input.h>
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/platform_device.h>
++#include <linux/pwm.h>
++#include <linux/slab.h>
++
++struct pwm_beeper {
++	struct input_dev *input;
++	struct pwm_device *pwm;
++	unsigned long period;
++};
++
++#define HZ_TO_NANOSECONDS(x) (1000000000UL/(x))
++
++static int pwm_beeper_event(struct input_dev *input,
++			    unsigned int type, unsigned int code, int value)
++{
++	int ret = 0;
++	struct pwm_beeper *beeper = input_get_drvdata(input);
++	unsigned long period;
++
++	if (type != EV_SND || value < 0)
++		return -EINVAL;
++
++	switch (code) {
++	case SND_BELL:
++		value = value ? 1000 : 0;
++		break;
++	case SND_TONE:
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	if (value == 0) {
++		pwm_config(beeper->pwm, 0, 0);
++		pwm_disable(beeper->pwm);
++	} else {
++		period = HZ_TO_NANOSECONDS(value);
++		ret = pwm_config(beeper->pwm, period / 2, period);
++		if (ret)
++			return ret;
++		ret = pwm_enable(beeper->pwm);
++		if (ret)
++			return ret;
++		beeper->period = period;
++	}
++
++	return 0;
++}
++
++static int __devinit pwm_beeper_probe(struct platform_device *pdev)
++{
++	unsigned long pwm_id = (unsigned long)pdev->dev.platform_data;
++	struct pwm_beeper *beeper;
++	int error;
++
++	beeper = kzalloc(sizeof(*beeper), GFP_KERNEL);
++	if (!beeper)
++		return -ENOMEM;
++
++	beeper->pwm = pwm_request(pwm_id, "pwm beeper");
++
++	if (IS_ERR(beeper->pwm)) {
++		error = PTR_ERR(beeper->pwm);
++		dev_err(&pdev->dev, "Failed to request pwm device: %d\n", error);
++		goto err_free;
++	}
++
++	beeper->input = input_allocate_device();
++	if (!beeper->input) {
++		dev_err(&pdev->dev, "Failed to allocate input device\n");
++		error = -ENOMEM;
++		goto err_pwm_free;
++	}
++	beeper->input->dev.parent = &pdev->dev;
++
++	beeper->input->name = "pwm-beeper";
++	beeper->input->phys = "pwm/input0";
++	beeper->input->id.bustype = BUS_HOST;
++	beeper->input->id.vendor = 0x001f;
++	beeper->input->id.product = 0x0001;
++	beeper->input->id.version = 0x0100;
++
++	beeper->input->evbit[0] = BIT(EV_SND);
++	beeper->input->sndbit[0] = BIT(SND_TONE) | BIT(SND_BELL);
++
++	beeper->input->event = pwm_beeper_event;
++
++	input_set_drvdata(beeper->input, beeper);
++
++	error = input_register_device(beeper->input);
++	if (error) {
++		dev_err(&pdev->dev, "Failed to register input device: %d\n", error);
++		goto err_input_free;
++	}
++
++	platform_set_drvdata(pdev, beeper);
++
++	return 0;
++
++err_input_free:
++	input_free_device(beeper->input);
++err_pwm_free:
++	pwm_free(beeper->pwm);
++err_free:
++	kfree(beeper);
++
++	return error;
++}
++
++static int __devexit pwm_beeper_remove(struct platform_device *pdev)
++{
++	struct pwm_beeper *beeper = platform_get_drvdata(pdev);
++
++	platform_set_drvdata(pdev, NULL);
++	input_unregister_device(beeper->input);
++
++	pwm_disable(beeper->pwm);
++	pwm_free(beeper->pwm);
++
++	kfree(beeper);
++
++	return 0;
++}
++
++#ifdef CONFIG_PM
++static int pwm_beeper_suspend(struct device *dev)
++{
++	struct pwm_beeper *beeper = dev_get_drvdata(dev);
++
++	if (beeper->period)
++		pwm_disable(beeper->pwm);
++
++	return 0;
++}
++
++static int pwm_beeper_resume(struct device *dev)
++{
++	struct pwm_beeper *beeper = dev_get_drvdata(dev);
++
++	if (beeper->period) {
++		pwm_config(beeper->pwm, beeper->period / 2, beeper->period);
++		pwm_enable(beeper->pwm);
++	}
++
++	return 0;
++}
++
++static SIMPLE_DEV_PM_OPS(pwm_beeper_pm_ops,
++			 pwm_beeper_suspend, pwm_beeper_resume);
++
++#define PWM_BEEPER_PM_OPS (&pwm_beeper_pm_ops)
++#else
++#define PWM_BEEPER_PM_OPS NULL
++#endif
++
++static struct platform_driver pwm_beeper_driver = {
++	.probe	= pwm_beeper_probe,
++	.remove = __devexit_p(pwm_beeper_remove),
++	.driver = {
++		.name	= "pwm-beeper",
++		.owner	= THIS_MODULE,
++		.pm	= PWM_BEEPER_PM_OPS,
++	},
++};
++
++static int __init pwm_beeper_init(void)
++{
++	return platform_driver_register(&pwm_beeper_driver);
++}
++module_init(pwm_beeper_init);
++
++static void __exit pwm_beeper_exit(void)
++{
++	platform_driver_unregister(&pwm_beeper_driver);
++}
++module_exit(pwm_beeper_exit);
++
++MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
++MODULE_DESCRIPTION("PWM beeper driver");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:pwm-beeper");