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Date: Fri, 7 Mar 2014 12:37:45 +0000
From: "Opensource [Steve Twiss]" <stwiss.opensource@...semi.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
CC: David Dajun Chen <david.chen@...semi.com>,
LKML-INPUT <linux-input@...r.kernel.org>,
LKML-KERNEL <linux-kernel@...r.kernel.org>
Subject: [RFC V1 2/2] input: misc: da9063: OnKey driver
From: Opensource [Steve Twiss] <stwiss.opensource@...semi.com>
Add the OnKey driver for DA9063.
Signed-off-by: Opensource [Steve Twiss] <stwiss.opensource@...semi.com>
---
Checks performed with next-20140307/scripts/checkpatch.pl
da9063-onkey.c total: 0 errors, 0 warnings, 202 lines checked
Kconfig total: 0 errors, 11 warnings, 679 lines checked
Makefile total: 0 errors, 0 warnings, 66 lines checked
Hello,
This is a RFC for the Dialog DA9063 Onkey driver.
Dependencies:
This driver makes use of the name field "ONKEY" as part of the
function call: platform_get_irq_byname();
This driver is therefore dependent on this change to the name field
in the properties of the the OnKey IORESOURCE_IRQ resource structure
(part of the mfd_cell Onkey resource inside da9063-core.c). This
change will be added as part of the final set when I submit all patches
as a single PATCH set.
This patch applies against kernel version linux-next next-20140307
Regards,
Steve Twiss, Dialog Semiconductor Ltd.
drivers/input/misc/Kconfig | 10 ++
drivers/input/misc/Makefile | 1 +
drivers/input/misc/da9063-onkey.c | 202 +++++++++++++++++++++++++++++++++++++
3 files changed, 213 insertions(+)
create mode 100644 drivers/input/misc/da9063-onkey.c
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 762e6d2..3deb008 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -522,6 +522,16 @@ config INPUT_DA9055_ONKEY
To compile this driver as a module, choose M here: the module
will be called da9055_onkey.
+config INPUT_DA9063_ONKEY
+ tristate "Dialog DA9063 OnKey"
+ depends on MFD_DA9063
+ help
+ Support the ONKEY of Dialog DA9063 Power Management IC as an
+ input device reporting power button statue.
+
+ To compile this driver as a module, choose M here: the module
+ will be called da9063-onkey.
+
config INPUT_DM355EVM
tristate "TI DaVinci DM355 EVM Keypad and IR Remote"
depends on MFD_DM355EVM_MSP
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index cda71fc..f40caa7 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_INPUT_CMA3000_I2C) += cma3000_d0x_i2c.o
obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o
obj-$(CONFIG_INPUT_DA9052_ONKEY) += da9052_onkey.o
obj-$(CONFIG_INPUT_DA9055_ONKEY) += da9055_onkey.o
+obj-$(CONFIG_INPUT_DA9063_ONKEY) += da9063-onkey.o
obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o
obj-$(CONFIG_INPUT_GP2A) += gp2ap002a00f.o
obj-$(CONFIG_INPUT_GPIO_BEEPER) += gpio-beeper.o
diff --git a/drivers/input/misc/da9063-onkey.c b/drivers/input/misc/da9063-onkey.c
new file mode 100644
index 0000000..654f52b
--- /dev/null
+++ b/drivers/input/misc/da9063-onkey.c
@@ -0,0 +1,202 @@
+/* da9063-onkey.c - Onkey device driver for DA9063
+ * Copyright (C) 2013 Dialog Semiconductor Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/workqueue.h>
+#include <linux/regmap.h>
+
+#include <linux/mfd/da9063/core.h>
+#include <linux/mfd/da9063/pdata.h>
+#include <linux/mfd/da9063/registers.h>
+
+struct da9063_onkey {
+ struct da9063 *hw;
+ struct delayed_work work;
+ struct input_dev *input;
+ bool key_power;
+};
+
+static void da9063_poll_on(struct work_struct *work)
+{
+ struct da9063_onkey *onkey = container_of(work, struct da9063_onkey,
+ work.work);
+ unsigned int val;
+ int poll = 1;
+ int ret;
+
+ /* poll to see when the pin is deasserted */
+ ret = regmap_read(onkey->hw->regmap, DA9063_REG_STATUS_A, &val);
+ if (ret < 0) {
+ dev_err(&onkey->input->dev,
+ "Failed to read ON status: %d\n", ret);
+ goto err_poll;
+ }
+
+ if (!(val & DA9063_NONKEY)) {
+ ret = regmap_update_bits(onkey->hw->regmap,
+ DA9063_REG_CONTROL_B,
+ DA9063_NONKEY_LOCK, 0);
+ if (ret < 0) {
+ dev_err(&onkey->input->dev,
+ "Failed to reset the Key Delay %d\n", ret);
+ goto err_poll;
+ }
+
+ input_report_key(onkey->input, KEY_POWER, 0);
+ input_sync(onkey->input);
+
+ /* unmask the onkey interrupt again */
+ ret = regmap_update_bits(onkey->hw->regmap,
+ DA9063_REG_IRQ_MASK_A,
+ DA9063_NONKEY, 0);
+ if (ret < 0) {
+ dev_err(&onkey->input->dev,
+ "Failed to unmask the onkey IRQ: %d\n", ret);
+ goto err_poll;
+ }
+
+ poll = 0;
+ }
+
+err_poll:
+ if (poll)
+ schedule_delayed_work(&onkey->work, 50);
+}
+
+static irqreturn_t da9063_onkey_irq_handler(int irq, void *data)
+{
+ struct da9063_onkey *onkey = data;
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(onkey->hw->regmap, DA9063_REG_STATUS_A, &val);
+ if (onkey->key_power && (ret >= 0) && (val & DA9063_NONKEY)) {
+ ret = regmap_update_bits(onkey->hw->regmap,
+ DA9063_REG_IRQ_MASK_A,
+ DA9063_NONKEY, 1);
+ if (ret < 0)
+ dev_err(&onkey->input->dev,
+ "Failed to mask the onkey IRQ: %d\n", ret);
+
+ input_report_key(onkey->input, KEY_POWER, 1);
+ input_sync(onkey->input);
+
+ schedule_delayed_work(&onkey->work, 0);
+ dev_dbg(&onkey->input->dev, "KEY_POWER pressed.\n");
+ } else {
+ input_report_key(onkey->input, KEY_SLEEP, 1);
+ input_report_key(onkey->input, KEY_SLEEP, 0);
+ input_sync(onkey->input);
+ dev_dbg(&onkey->input->dev, "KEY_SLEEP pressed.\n");
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int da9063_onkey_probe(struct platform_device *pdev)
+{
+ struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
+ struct da9063_pdata *pdata = dev_get_platdata(da9063->dev);
+ struct da9063_onkey *onkey;
+ bool kp_tmp = true;
+ int ret = 0;
+ int irq;
+
+ if (pdata)
+ kp_tmp = pdata->key_power;
+
+ if (!kp_tmp)
+ dev_err(&pdev->dev,
+ "Software power down key is not set.\n");
+
+ onkey = devm_kzalloc(&pdev->dev, sizeof(struct da9063_onkey),
+ GFP_KERNEL);
+ if (!onkey) {
+ dev_err(&pdev->dev, "Failed to allocate memory.\n");
+ return -ENOMEM;
+ }
+
+ INIT_DELAYED_WORK(&onkey->work, da9063_poll_on);
+
+ onkey->input = devm_input_allocate_device(&pdev->dev);
+ if (!onkey->input) {
+ dev_err(&pdev->dev, "Failed to allocated input device.\n");
+ return -ENOMEM;
+ }
+
+ irq = platform_get_irq_byname(pdev, "ONKEY");
+ if (irq < 0) {
+ dev_err(&pdev->dev, "Failed to get platform IRQ.\n");
+ return irq;
+ }
+
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ da9063_onkey_irq_handler,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ "ONKEY", onkey);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to request input device IRQ.\n");
+ return ret;
+ }
+
+ onkey->hw = da9063;
+ onkey->key_power = kp_tmp;
+ onkey->input->evbit[0] = BIT_MASK(EV_KEY);
+ onkey->input->name = DA9063_DRVNAME_ONKEY;
+ onkey->input->phys = DA9063_DRVNAME_ONKEY "/input0";
+ onkey->input->dev.parent = &pdev->dev;
+
+ if (onkey->key_power)
+ input_set_capability(onkey->input, EV_KEY, KEY_POWER);
+ input_set_capability(onkey->input, EV_KEY, KEY_SLEEP);
+
+ ret = input_register_device(onkey->input);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to register input device.\n");
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, onkey);
+ return ret;
+}
+
+static int da9063_onkey_remove(struct platform_device *pdev)
+{
+ struct da9063_onkey *onkey = platform_get_drvdata(pdev);
+ cancel_delayed_work_sync(&onkey->work);
+ input_unregister_device(onkey->input);
+ return 0;
+}
+
+static struct platform_driver da9063_onkey_driver = {
+ .probe = da9063_onkey_probe,
+ .remove = da9063_onkey_remove,
+ .driver = {
+ .name = DA9063_DRVNAME_ONKEY,
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(da9063_onkey_driver);
+
+MODULE_AUTHOR("S Twiss <stwiss.opensource@...semi.com>");
+MODULE_DESCRIPTION("Onkey device driver for Dialog DA9063");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DA9063_DRVNAME_ONKEY);
--
end-of-patch for RFC V1
--
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