input: misc: add hi6421 onkey driver
Support Hi6421 PMIC powerkey driver.
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index eb7e193..5282181 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -93,6 +93,15 @@
To compile this driver as a module, choose M here: the
module will be called bma150.
+config INPUT_HI6421_ONKEY
+ tristate "Hisilicon Hi6421 PMIC ONKEY support"
+ depends on MFD_HI6421_PMIC
+ help
+ Say Y to enable support for Hi6421 PMIC ONKEY.
+
+ To compile this driver as a module, choose M here: the
+ module will be called hi6421_pwrkey.
+
config INPUT_PCSPKR
tristate "PC Speaker support"
depends on PCSPKR_PLATFORM
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index 37813b4..6e5d276 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -30,6 +30,7 @@
obj-$(CONFIG_INPUT_GPIO_BEEPER) += gpio-beeper.o
obj-$(CONFIG_INPUT_GPIO_TILT_POLLED) += gpio_tilt_polled.o
obj-$(CONFIG_INPUT_GPIO) += gpio_event.o gpio_matrix.o gpio_input.o gpio_output.o gpio_axis.o
+obj-$(CONFIG_INPUT_HI6421_ONKEY) += hi6421_pwrkey.o
obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
obj-$(CONFIG_INPUT_IMS_PCU) += ims-pcu.o
obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o
diff --git a/drivers/input/misc/hi6421_pwrkey.c b/drivers/input/misc/hi6421_pwrkey.c
new file mode 100644
index 0000000..31d0145
--- /dev/null
+++ b/drivers/input/misc/hi6421_pwrkey.c
@@ -0,0 +1,153 @@
+/*
+ * hi6421_pwrkey.c - Hisilicon Hi6421 PMIC ONKEY driver
+ *
+ * Copyright (C) 2013 Hisilicon Ltd.
+ * Copyright (C) 2013 Linaro Ltd.
+ * Author: Haojian Zhuang <haojian.zhuang@linaro.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.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/hi6421-pmic.h>
+
+struct hi6421_onkey_info {
+ struct input_dev *idev;
+ int irq[4];
+};
+
+static irqreturn_t hi6421_onkey_handler(int irq, void *data)
+{
+ struct hi6421_onkey_info *info = (struct hi6421_onkey_info *)data;
+
+ /* only handle power down & power up event at here */
+ if (irq == info->irq[0]) {
+ input_report_key(info->idev, KEY_POWER, 1);
+ input_sync(info->idev);
+ } else if (irq == info->irq[1]) {
+ input_report_key(info->idev, KEY_POWER, 0);
+ input_sync(info->idev);
+ }
+ return IRQ_HANDLED;
+}
+
+static int hi6421_onkey_probe(struct platform_device *pdev)
+{
+ struct hi6421_onkey_info *info;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->idev = input_allocate_device();
+ if (!info->idev) {
+ dev_err(&pdev->dev, "Failed to allocate input device\n");
+ return -ENOMEM;
+ }
+ info->idev->name = "hi6421_on";
+ info->idev->phys = "hi6421_on/input0";
+ info->idev->dev.parent = &pdev->dev;
+ info->idev->evbit[0] = BIT_MASK(EV_KEY);
+ __set_bit(KEY_POWER, info->idev->keybit);
+
+ info->irq[0] = platform_get_irq_byname(pdev, "down");
+ if (info->irq[0] < 0) {
+ ret = -ENOENT;
+ goto err_irq0;
+ }
+ ret = request_irq(info->irq[0], hi6421_onkey_handler,
+ IRQF_DISABLED, "down", info);
+ if (ret < 0)
+ goto err_irq0;
+ info->irq[1] = platform_get_irq_byname(pdev, "up");
+ if (info->irq[1] < 0) {
+ ret = -ENOENT;
+ goto err_irq1;
+ }
+ ret = request_irq(info->irq[1], hi6421_onkey_handler,
+ IRQF_DISABLED, "up", info);
+ if (ret < 0)
+ goto err_irq1;
+ info->irq[2] = platform_get_irq_byname(pdev, "hold 1s");
+ if (info->irq[2] < 0) {
+ ret = -ENOENT;
+ goto err_irq2;
+ }
+ ret = request_irq(info->irq[2], hi6421_onkey_handler,
+ IRQF_DISABLED, "hold 1s", info);
+ if (ret < 0)
+ goto err_irq2;
+ info->irq[3] = platform_get_irq_byname(pdev, "hold 10s");
+ if (info->irq[3] < 0) {
+ ret = -ENOENT;
+ goto err_irq3;
+ }
+ ret = request_irq(info->irq[3], hi6421_onkey_handler,
+ IRQF_DISABLED, "hold 10s", info);
+ if (ret < 0)
+ goto err_irq3;
+
+ ret = input_register_device(info->idev);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't register input device: %d\n", ret);
+ goto err_reg;
+ }
+
+ platform_set_drvdata(pdev, info);
+ return ret;
+err_reg:
+ free_irq(info->irq[3], info);
+err_irq3:
+ free_irq(info->irq[2], info);
+err_irq2:
+ free_irq(info->irq[1], info);
+err_irq1:
+ free_irq(info->irq[0], info);
+err_irq0:
+ input_free_device(info->idev);
+ return ret;
+}
+
+static int hi6421_onkey_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static struct of_device_id hi6421_onkey_of_match[] = {
+ { .compatible = "hisilicon,hi6421-onkey", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, hi6421_onkey_of_match);
+
+static struct platform_driver hi6421_onkey_driver = {
+ .probe = hi6421_onkey_probe,
+ .remove = hi6421_onkey_remove,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "hi6421-onkey",
+ .of_match_table = hi6421_onkey_of_match,
+ },
+};
+module_platform_driver(hi6421_onkey_driver);
+
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@linaro.org");
+MODULE_DESCRIPTION("Hi6421 PMIC Power key driver");
+MODULE_LICENSE("GPL v2");
