From: Jiang Qiu <qiujiang@huawei.com>
To: <linus.walleij@linaro.org>, <gnurou@gmail.com>
Cc: <mika.westerberg@linux.intel.com>, <andy.shevchenko@gmail.com>,
<delicious.quinoa@gmail.com>, <jamie@jamieiles.com>,
<charles.chenxin@huawei.com>, <linux-kernel@vger.kernel.org>,
<linux-gpio@vger.kernel.org>, <linux-acpi@vger.kernel.org>,
<linuxarm@huawei.com>, Jiang Qiu <qiujiang@huawei.com>
Subject: [PATCH v10 3/3] gpio: dwapb: add gpio-signaled acpi event support
Date: Thu, 28 Apr 2016 17:32:03 +0800 [thread overview]
Message-ID: <1461835923-68492-4-git-send-email-qiujiang@huawei.com> (raw)
In-Reply-To: <1461835923-68492-1-git-send-email-qiujiang@huawei.com>
This patch adds gpio-signaled acpi event support. It is used for
power button on hisilicon D02 board, an arm64 platform.
The corresponding DSDT file is defined as follows:
Device(GPI0) {
Name(_HID, "HISI0181")
Name(_ADR, 0)
Name(_UID, 0)
Name (_CRS, ResourceTemplate () {
Memory32Fixed (ReadWrite, 0x802e0000, 0x10000)
Interrupt (ResourceConsumer, Level, ActiveHigh,
Exclusive,,,) {344}
})
Device(PRTa) {
Name (_DSD, Package () {
Package () {
Package () {"reg",0},
Package () {"snps,nr-gpios",32},
}
})
}
Name (_AEI, ResourceTemplate () {
GpioInt(Edge, ActiveLow, ExclusiveAndWake,
PullUp, , " \\_SB.GPI0") {8}
})
Method (_E08, 0x0, NotSerialized) {
Notify (\_SB.PWRB, 0x80)
}
}
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jiang Qiu <qiujiang@huawei.com>
---
drivers/gpio/gpio-dwapb.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 7517c2f..b235d70 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -7,6 +7,7 @@
*
* All enquiries to support@picochip.com
*/
+#include <linux/acpi.h>
#include <linux/gpio/driver.h>
/* FIXME: for gpio_get_value(), replace this with direct register read */
#include <linux/gpio.h>
@@ -27,6 +28,8 @@
#include <linux/platform_data/gpio-dwapb.h>
#include <linux/slab.h>
+#include "gpiolib.h"
+
#define GPIO_SWPORTA_DR 0x00
#define GPIO_SWPORTA_DDR 0x04
#define GPIO_SWPORTB_DR 0x0c
@@ -435,6 +438,10 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
else
port->is_registered = true;
+ /* Add GPIO-signaled ACPI event support */
+ if (pp->irq)
+ acpi_gpiochip_request_interrupts(&port->gc);
+
return err;
}
@@ -502,6 +509,9 @@ dwapb_gpio_get_pdata(struct device *dev)
dev_warn(dev, "no irq for port%d\n", pp->idx);
}
+ if (has_acpi_companion(dev) && pp->idx == 0)
+ pp->irq = platform_get_irq(to_platform_device(dev), 0);
+
pp->irq_shared = false;
pp->gpio_base = -1;
}
@@ -576,6 +586,12 @@ static const struct of_device_id dwapb_of_match[] = {
};
MODULE_DEVICE_TABLE(of, dwapb_of_match);
+static const struct acpi_device_id dwapb_acpi_match[] = {
+ {"HISI0181", 0},
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, dwapb_acpi_match);
+
#ifdef CONFIG_PM_SLEEP
static int dwapb_gpio_suspend(struct device *dev)
{
@@ -670,6 +686,7 @@ static struct platform_driver dwapb_gpio_driver = {
.name = "gpio-dwapb",
.pm = &dwapb_gpio_pm_ops,
.of_match_table = of_match_ptr(dwapb_of_match),
+ .acpi_match_table = ACPI_PTR(dwapb_acpi_match),
},
.probe = dwapb_gpio_probe,
.remove = dwapb_gpio_remove,
--
1.9.1
next prev parent reply other threads:[~2016-04-28 9:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-28 9:32 [PATCH v10 0/3] gpio: dwapb: add gpio-signaled acpi event support for power button Jiang Qiu
2016-04-28 9:32 ` [PATCH v10 1/3] gpio: dwapb: remove name from dwapb_port_property Jiang Qiu
2016-04-29 9:22 ` Linus Walleij
2016-05-03 3:38 ` Jiang Qiu
2016-04-28 9:32 ` [PATCH v10 2/3] gpio: dwapb: convert device node to fwnode Jiang Qiu
2016-04-29 9:24 ` Linus Walleij
2016-04-28 9:32 ` Jiang Qiu [this message]
2016-04-29 9:25 ` [PATCH v10 3/3] gpio: dwapb: add gpio-signaled acpi event support Linus Walleij
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