From: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
To: Lee Jones <lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Maxime Ripard
<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Dmitry Torokhov
<dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
Subject: [PATCH v8 3/6] input: misc: Add driver for AXP20x Power Enable Key
Date: Tue, 23 Dec 2014 10:53:11 +0800 [thread overview]
Message-ID: <1419303194-3075-4-git-send-email-wens@csie.org> (raw)
In-Reply-To: <1419303194-3075-1-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
From: Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
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-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
[wens-jdAy2FN1RRM@public.gmane.org: make axp20x_pek_remove() static; remove driver owner field]
Signed-off-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
---
drivers/input/misc/Kconfig | 11 ++
drivers/input/misc/Makefile | 1 +
drivers/input/misc/axp20x-pek.c | 282 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 294 insertions(+)
create mode 100644 drivers/input/misc/axp20x-pek.c
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 23297ab6163f..a49bcd351e13 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 19c760361f80..04ea87fd600d 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 000000000000..8dbd097ac939
--- /dev/null
+++ b/drivers/input/misc/axp20x-pek.c
@@ -0,0 +1,282 @@
+/*
+ * axp20x power button driver.
+ *
+ * Copyright (C) 2013 Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.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;
+}
+
+static 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",
+ },
+};
+module_platform_driver(axp20x_pek_driver);
+
+MODULE_DESCRIPTION("axp20x Power Button");
+MODULE_AUTHOR("Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>");
+MODULE_LICENSE("GPL");
--
2.1.4
next prev parent reply other threads:[~2014-12-23 2:53 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-23 2:53 [PATCH v8 0/6] mfd: AXP20x: Add support for AXP202 and AXP209 Chen-Yu Tsai
[not found] ` <1419303194-3075-1-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2014-12-23 2:53 ` [PATCH v8 1/6] mfd: AXP20x: Add bindings documentation Chen-Yu Tsai
[not found] ` <1419303194-3075-2-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2015-01-11 2:02 ` Chen-Yu Tsai
2015-01-19 9:37 ` Lee Jones
2015-01-19 10:02 ` Chen-Yu Tsai
2014-12-23 2:53 ` [PATCH v8 2/6] dt-bindings: add vendor-prefix for X-Powers Chen-Yu Tsai
[not found] ` <1419303194-3075-3-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2015-01-19 9:38 ` Lee Jones
2014-12-23 2:53 ` Chen-Yu Tsai [this message]
[not found] ` <1419303194-3075-4-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2014-12-29 23:16 ` [PATCH v8 3/6] input: misc: Add driver for AXP20x Power Enable Key Dmitry Torokhov
2014-12-30 7:25 ` Chen-Yu Tsai
2014-12-23 2:53 ` [PATCH v8 4/6] input: misc: Add ABI docs for AXP20x PEK Chen-Yu Tsai
[not found] ` <1419303194-3075-5-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2015-01-15 16:00 ` Chen-Yu Tsai
[not found] ` <CAGb2v64AvP+niDrFU-vGGsXUoKD_kv34DqEPRFUZ0fiyeWiz9A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-15 17:39 ` Dmitry Torokhov
2015-01-16 1:01 ` Chen-Yu Tsai
2014-12-23 2:53 ` [PATCH v8 5/6] ARM: sunxi: Add AXP20x support in defconfig Chen-Yu Tsai
[not found] ` <1419303194-3075-6-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2015-01-06 16:33 ` Maxime Ripard
2014-12-23 2:53 ` [PATCH v8 6/6] ARM: sunxi: Add AXP20x support multi_v7_defconfig Chen-Yu Tsai
[not found] ` <1419303194-3075-7-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2015-01-06 16:34 ` Maxime Ripard
2014-12-24 11:00 ` [PATCH v8 0/6] mfd: AXP20x: Add support for AXP202 and AXP209 Carlo Caione
2015-01-16 1:08 ` Chen-Yu Tsai
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1419303194-3075-4-git-send-email-wens@csie.org \
--to=wens-jday2fn1rrm@public.gmane.org \
--cc=broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org \
--cc=dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org \
--cc=maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).