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gpio: xgene: add ACPI support for APM X-Gene GPIO standby driver
Add ACPI support for APM X-Gene GPIO standby driver. Signed-off-by: Y Vo <yvo@apm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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1 changed files with 21 additions and 0 deletions
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@ -25,8 +25,11 @@
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#include <linux/of_gpio.h>
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#include <linux/gpio.h>
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#include <linux/gpio/driver.h>
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#include <linux/acpi.h>
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#include <linux/basic_mmio_gpio.h>
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#include "gpiolib.h"
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#define XGENE_MAX_GPIO_DS 22
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#define XGENE_MAX_GPIO_DS_IRQ 6
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@ -128,6 +131,11 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev)
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else
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dev_info(&pdev->dev, "X-Gene GPIO Standby driver registered\n");
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if (priv->nirq > 0) {
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/* Register interrupt handlers for gpio signaled acpi events */
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acpi_gpiochip_request_interrupts(&priv->bgc.gc);
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}
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return ret;
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}
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@ -135,6 +143,10 @@ static int xgene_gpio_sb_remove(struct platform_device *pdev)
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{
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struct xgene_gpio_sb *priv = platform_get_drvdata(pdev);
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if (priv->nirq > 0) {
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acpi_gpiochip_free_interrupts(&priv->bgc.gc);
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}
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return bgpio_remove(&priv->bgc);
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}
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@ -144,10 +156,19 @@ static const struct of_device_id xgene_gpio_sb_of_match[] = {
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};
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MODULE_DEVICE_TABLE(of, xgene_gpio_sb_of_match);
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#ifdef CONFIG_ACPI
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static const struct acpi_device_id xgene_gpio_sb_acpi_match[] = {
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{"APMC0D15", 0},
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{},
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};
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MODULE_DEVICE_TABLE(acpi, xgene_gpio_sb_acpi_match);
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#endif
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static struct platform_driver xgene_gpio_sb_driver = {
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.driver = {
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.name = "xgene-gpio-sb",
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.of_match_table = xgene_gpio_sb_of_match,
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.acpi_match_table = ACPI_PTR(xgene_gpio_sb_acpi_match),
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},
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.probe = xgene_gpio_sb_probe,
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.remove = xgene_gpio_sb_remove,
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