From: Trilok Soni ts...@codeaurora.org
Add support for PMIC8058 power key driven over dedicated
KYPD_PWR_N pin. It allows the user to specify the amount
of time by which the power key reporting can be delayed.
Cc: Dmitry Torokhov dmitry.torok...@gmail.com
Signed-off-by: Trilok Soni ts...@codeaurora.org
---
Changes from v1:
Addressed review comments from Dmitry.
Added KEY_SCREENLOCK instead of KEY_END.
Moved to timer list instead of hires timers.
drivers/input/misc/Kconfig| 11 ++
drivers/input/misc/Makefile |1 +
drivers/input/misc/pmic8058-pwrkey.c | 318 +
include/linux/input/pmic8058-pwrkey.h | 37
4 files changed, 367 insertions(+), 0 deletions(-)
create mode 100644 drivers/input/misc/pmic8058-pwrkey.c
create mode 100644 include/linux/input/pmic8058-pwrkey.h
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index b0c6772..d70a7be 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -330,6 +330,17 @@ config INPUT_PWM_BEEPER
To compile this driver as a module, choose M here: the module will be
called pwm-beeper.
+config INPUT_PMIC8058_PWRKEY
+ tristate PMIC8058 power key support
+ depends on PMIC8058
+ help
+ Say Y here if you want support for the PMIC8058 power key.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called pmic8058-pwrkey.
+
config INPUT_GPIO_ROTARY_ENCODER
tristate Rotary encoders connected to GPIO pins
depends on GPIOLIB GENERIC_GPIO
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index 9b47971..0348704 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -33,6 +33,7 @@ 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-$(CONFIG_INPUT_PMIC8058_PWRKEY)+= pmic8058-pwrkey.o
obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o
obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER)+= rotary_encoder.o
obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o
diff --git a/drivers/input/misc/pmic8058-pwrkey.c
b/drivers/input/misc/pmic8058-pwrkey.c
new file mode 100644
index 000..029483e
--- /dev/null
+++ b/drivers/input/misc/pmic8058-pwrkey.c
@@ -0,0 +1,318 @@
+/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include linux/module.h
+#include linux/init.h
+#include linux/kernel.h
+#include linux/errno.h
+#include linux/slab.h
+#include linux/input.h
+#include linux/interrupt.h
+#include linux/platform_device.h
+#include linux/mfd/pmic8058.h
+#include linux/log2.h
+#include linux/spinlock.h
+#include linux/timer.h
+
+#include linux/input/pmic8058-pwrkey.h
+
+#define PON_CNTL_1 0x1C
+#define PON_CNTL_PULL_UP BIT(7)
+#define PON_CNTL_TRIG_DELAY_MASK (0x7)
+
+/**
+ * struct pmic8058_pwrkey - pmic8058 pwrkey information
+ * @key_press_irq: key press irq number
+ * @pm_chip: pmic8058 parent
+ * @timer: timer for end key simulation
+ * @key_pressed: flag to keep track for power key reporting
+ * @pdata: platform data
+ * @lock: protect key press update and end key simulation
+ */
+struct pmic8058_pwrkey {
+ struct input_dev *pwr;
+ int key_press_irq;
+ struct pm8058_chip *pm_chip;
+ struct timer_list timer;
+ bool key_pressed;
+ const struct pmic8058_pwrkey_pdata *pdata;
+ spinlock_t lock;
+};
+
+static void pmic8058_pwrkey_timer(unsigned long handle)
+{
+ unsigned long flags;
+ struct pmic8058_pwrkey *pwrkey = (struct pmic8058_pwrkey *)handle;
+
+ spin_lock_irqsave(pwrkey-lock, flags);
+ pwrkey-key_pressed = true;
+
+ input_report_key(pwrkey-pwr, KEY_POWER, 1);
+ input_sync(pwrkey-pwr);
+ spin_unlock_irqrestore(pwrkey-lock, flags);
+}
+
+static irqreturn_t pwrkey_press_irq(int irq, void *_pwrkey)
+{
+ struct pmic8058_pwrkey *pwrkey = _pwrkey;
+ const struct pmic8058_pwrkey_pdata *pdata = pwrkey-pdata;
+ unsigned long flags;
+
+ /* no pwrkey time duration, means no end key simulation */
+ if
