sunxi: add initial 3.18 support

Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>

SVN-Revision: 43337

1 files changed, 339 insertions, 0 deletions

diff --git a/target/linux/sunxi/patches-3.18/130-input-add-axp20x-pek.patch b/target/linux/sunxi/patches-3.18/130-input-add-axp20x-pek.patch
new file mode 100644
index 0000000000..537ba365f1
--- /dev/null
+++ b/target/linux/sunxi/patches-3.18/130-input-add-axp20x-pek.patch
@@ -0,0 +1,339 @@
+From 63d559304a15ffead2fa1014b93dbcabf516c257 Mon Sep 17 00:00:00 2001
+From: Carlo Caione <carlo@caione.org>
+Date: Mon, 19 May 2014 21:47:45 +0200
+Subject: [PATCH] input: misc: Add driver for AXP20x Power Enable Key
+
+This patch add support for the Power Enable Key found on MFD AXP202 and
+AXP209. Besides the basic support for the button, the driver adds two
+entries in sysfs to configure the time delay for power on/off.
+
+Signed-off-by: Carlo Caione <carlo@caione.org>
+Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
+---
+ drivers/input/misc/Kconfig      |  11 ++
+ drivers/input/misc/Makefile     |   1 +
+ drivers/input/misc/axp20x-pek.c | 281 ++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 293 insertions(+)
+ create mode 100644 drivers/input/misc/axp20x-pek.c
+
+diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
+index 23297ab..a49bcd3 100644
+--- a/drivers/input/misc/Kconfig
++++ b/drivers/input/misc/Kconfig
+@@ -404,6 +404,17 @@ config INPUT_RETU_PWRBUTTON
+ 	  To compile this driver as a module, choose M here. The module will
+ 	  be called retu-pwrbutton.
+ 
++config INPUT_AXP20X_PEK
++	tristate "X-Powers AXP20X power button driver"
++	depends on MFD_AXP20X
++	help
++	  Say Y here if you want to enable power key reporting via the
++	  AXP20X PMIC.
++
++	  To compile this driver as a module, choose M here. The module will
++	  be called axp20x-pek.
++
++
+ config INPUT_TWL4030_PWRBUTTON
+ 	tristate "TWL4030 Power button Driver"
+ 	depends on TWL4030_CORE
+diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
+index 19c7603..04ea87f 100644
+--- a/drivers/input/misc/Makefile
++++ b/drivers/input/misc/Makefile
+@@ -54,6 +54,7 @@ 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_RETU_PWRBUTTON)	+= retu-pwrbutton.o
++obj-$(CONFIG_INPUT_AXP20X_PEK)		+= axp20x-pek.o
+ obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER)	+= rotary_encoder.o
+ obj-$(CONFIG_INPUT_SGI_BTNS)		+= sgi_btns.o
+ obj-$(CONFIG_INPUT_SIRFSOC_ONKEY)	+= sirfsoc-onkey.o
+diff --git a/drivers/input/misc/axp20x-pek.c b/drivers/input/misc/axp20x-pek.c
+new file mode 100644
+index 0000000..0fba252
+--- /dev/null
++++ b/drivers/input/misc/axp20x-pek.c
+@@ -0,0 +1,281 @@
++/*
++ * axp20x power button driver.
++ *
++ * Copyright (C) 2013 Carlo Caione <carlo@caione.org>
++ *
++ * This file is subject to the terms and conditions of the GNU General
++ * Public License. See the file "COPYING" in the main directory of this
++ * archive for more details.
++ *
++ * 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/errno.h>
++#include <linux/irq.h>
++#include <linux/init.h>
++#include <linux/input.h>
++#include <linux/interrupt.h>
++#include <linux/kernel.h>
++#include <linux/mfd/axp20x.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/regmap.h>
++#include <linux/slab.h>
++
++#define AXP20X_PEK_STARTUP_MASK		(0xc0)
++#define AXP20X_PEK_SHUTDOWN_MASK	(0x03)
++
++struct axp20x_pek {
++	struct axp20x_dev *axp20x;
++	struct input_dev *input;
++	int irq_dbr;
++	int irq_dbf;
++};
++
++struct axp20x_time {
++	unsigned int time;
++	unsigned int idx;
++};
++
++static const struct axp20x_time startup_time[] = {
++	{ .time = 128,  .idx = 0 },
++	{ .time = 1000, .idx = 2 },
++	{ .time = 3000, .idx = 1 },
++	{ .time = 2000, .idx = 3 },
++};
++
++static const struct axp20x_time shutdown_time[] = {
++	{ .time = 4000,  .idx = 0 },
++	{ .time = 6000,  .idx = 1 },
++	{ .time = 8000,  .idx = 2 },
++	{ .time = 10000, .idx = 3 },
++};
++
++struct axp20x_pek_ext_attr {
++	const struct axp20x_time *p_time;
++	unsigned int mask;
++};
++
++static struct axp20x_pek_ext_attr axp20x_pek_startup_ext_attr = {
++	.p_time	= startup_time,
++	.mask	= AXP20X_PEK_STARTUP_MASK,
++};
++
++static struct axp20x_pek_ext_attr axp20x_pek_shutdown_ext_attr = {
++	.p_time	= shutdown_time,
++	.mask	= AXP20X_PEK_SHUTDOWN_MASK,
++};
++
++static struct axp20x_pek_ext_attr *get_axp_ext_attr(struct device_attribute *attr)
++{
++	return container_of(attr, struct dev_ext_attribute, attr)->var;
++}
++
++static ssize_t axp20x_show_ext_attr(struct device *dev, struct device_attribute *attr,
++				    char *buf)
++{
++	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
++	struct axp20x_pek_ext_attr *axp20x_ea = get_axp_ext_attr(attr);
++	unsigned int val;
++	int ret, i;
++
++	ret = regmap_read(axp20x_pek->axp20x->regmap, AXP20X_PEK_KEY, &val);
++	if (ret != 0)
++		return ret;
++
++	val &= axp20x_ea->mask;
++	val >>= ffs(axp20x_ea->mask) - 1;
++
++	for (i = 0; i < 4; i++)
++		if (val == axp20x_ea->p_time[i].idx)
++			val = axp20x_ea->p_time[i].time;
++
++	return sprintf(buf, "%u\n", val);
++}
++
++static ssize_t axp20x_store_ext_attr(struct device *dev, struct device_attribute *attr,
++				     const char *buf, size_t count)
++{
++	struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev);
++	struct axp20x_pek_ext_attr *axp20x_ea = get_axp_ext_attr(attr);
++	char val_str[20];
++	size_t len;
++	int ret, i;
++	unsigned int val, idx = 0;
++	unsigned int best_err = UINT_MAX;
++
++	val_str[sizeof(val_str) - 1] = '\0';
++	strncpy(val_str, buf, sizeof(val_str) - 1);
++	len = strlen(val_str);
++
++	if (len && val_str[len - 1] == '\n')
++		val_str[len - 1] = '\0';
++
++	ret = kstrtouint(val_str, 10, &val);
++	if (ret)
++		return ret;
++
++	for (i = 3; i >= 0; i--) {
++		unsigned int err;
++
++		err = abs(axp20x_ea->p_time[i].time - val);
++		if (err < best_err) {
++			best_err = err;
++			idx = axp20x_ea->p_time[i].idx;
++		}
++
++		if (!err)
++			break;
++	}
++
++	idx <<= ffs(axp20x_ea->mask) - 1;
++	ret = regmap_update_bits(axp20x_pek->axp20x->regmap,
++				 AXP20X_PEK_KEY,
++				 axp20x_ea->mask, idx);
++	if (ret != 0)
++		return -EINVAL;
++	return count;
++}
++
++static struct dev_ext_attribute axp20x_dev_attr_startup = {
++	.attr	= __ATTR(startup, 0644, axp20x_show_ext_attr, axp20x_store_ext_attr),
++	.var	= &axp20x_pek_startup_ext_attr
++};
++
++static struct dev_ext_attribute axp20x_dev_attr_shutdown = {
++	.attr	= __ATTR(shutdown, 0644, axp20x_show_ext_attr, axp20x_store_ext_attr),
++	.var	= &axp20x_pek_shutdown_ext_attr
++};
++
++static irqreturn_t axp20x_pek_irq(int irq, void *pwr)
++{
++	struct input_dev *idev = pwr;
++	struct axp20x_pek *axp20x_pek = input_get_drvdata(idev);
++
++	if (irq == axp20x_pek->irq_dbr)
++		input_report_key(idev, KEY_POWER, true);
++	else if (irq == axp20x_pek->irq_dbf)
++		input_report_key(idev, KEY_POWER, false);
++
++	input_sync(idev);
++
++	return IRQ_HANDLED;
++}
++
++static int axp20x_pek_probe(struct platform_device *pdev)
++{
++	struct axp20x_pek *axp20x_pek;
++	struct axp20x_dev *axp20x;
++	struct input_dev *idev;
++	int error;
++
++	axp20x_pek = devm_kzalloc(&pdev->dev, sizeof(struct axp20x_pek),
++				  GFP_KERNEL);
++	if (!axp20x_pek)
++		return -ENOMEM;
++
++	axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent);
++	axp20x = axp20x_pek->axp20x;
++
++	axp20x_pek->irq_dbr = platform_get_irq_byname(pdev, "PEK_DBR");
++	if (axp20x_pek->irq_dbr < 0) {
++		dev_err(&pdev->dev, "No IRQ for PEK_DBR, error=%d\n",
++				axp20x_pek->irq_dbr);
++		return axp20x_pek->irq_dbr;
++	}
++	axp20x_pek->irq_dbr = regmap_irq_get_virq(axp20x->regmap_irqc,
++						  axp20x_pek->irq_dbr);
++
++	axp20x_pek->irq_dbf = platform_get_irq_byname(pdev, "PEK_DBF");
++	if (axp20x_pek->irq_dbf < 0) {
++		dev_err(&pdev->dev, "No IRQ for PEK_DBF, error=%d\n",
++				axp20x_pek->irq_dbf);
++		return axp20x_pek->irq_dbf;
++	}
++	axp20x_pek->irq_dbf = regmap_irq_get_virq(axp20x->regmap_irqc,
++						  axp20x_pek->irq_dbf);
++
++	axp20x_pek->input = devm_input_allocate_device(&pdev->dev);
++	if (!axp20x_pek->input)
++		return -ENOMEM;
++
++	idev = axp20x_pek->input;
++
++	idev->name = "axp20x-pek";
++	idev->phys = "m1kbd/input2";
++	idev->dev.parent = &pdev->dev;
++
++	input_set_capability(idev, EV_KEY, KEY_POWER);
++
++	input_set_drvdata(idev, axp20x_pek);
++
++	error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbr,
++					  axp20x_pek_irq, 0,
++					  "axp20x-pek-dbr", idev);
++	if (error < 0) {
++		dev_err(axp20x->dev, "Failed to request dbr IRQ#%d: %d\n",
++			axp20x_pek->irq_dbr, error);
++
++		return error;
++	}
++
++	error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbf,
++					  axp20x_pek_irq, 0,
++					  "axp20x-pek-dbf", idev);
++	if (error < 0) {
++		dev_err(axp20x->dev, "Failed to request dbf IRQ#%d: %d\n",
++			axp20x_pek->irq_dbf, error);
++		return error;
++	}
++
++	error = device_create_file(&pdev->dev, &axp20x_dev_attr_startup.attr);
++	if (error)
++		return error;
++
++	error = device_create_file(&pdev->dev, &axp20x_dev_attr_shutdown.attr);
++	if (error)
++		goto clear_startup_attr;
++
++	error = input_register_device(idev);
++	if (error) {
++		dev_err(axp20x->dev, "Can't register input device: %d\n", error);
++		goto clear_attr;
++	}
++
++	platform_set_drvdata(pdev, axp20x_pek);
++
++	return 0;
++
++clear_attr:
++	device_remove_file(&pdev->dev, &axp20x_dev_attr_shutdown.attr);
++
++clear_startup_attr:
++	device_remove_file(&pdev->dev, &axp20x_dev_attr_startup.attr);
++
++	return error;
++}
++
++int axp20x_pek_remove(struct platform_device *pdev)
++{
++	device_remove_file(&pdev->dev, &axp20x_dev_attr_shutdown.attr);
++	device_remove_file(&pdev->dev, &axp20x_dev_attr_startup.attr);
++
++	return 0;
++}
++
++static struct platform_driver axp20x_pek_driver = {
++	.probe		= axp20x_pek_probe,
++	.remove		= axp20x_pek_remove,
++	.driver		= {
++		.name		= "axp20x-pek",
++		.owner		= THIS_MODULE,
++	},
++};
++module_platform_driver(axp20x_pek_driver);
++
++MODULE_DESCRIPTION("axp20x Power Button");
++MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
++MODULE_LICENSE("GPL");