linux-kernel - [PATCH] gpio Add my driver new id

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Date:   Fri,  3 Dec 2021 17:26:09 +0800
From:   Richard Hsu <saraon640529@...il.com>
To:     linus.walleij@...aro.org, brgl@...ev.pl, Richard_Hsu@...edia.com.tw
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yd_Tseng@...edia.com.tw, Cindy1_Hsu@...edia.com.tw,
        Andrew_Su@...edia.com.tw
Subject: [PATCH] gpio Add my driver new id

 drivers/gpio/gpio-amdpt.c | 12 ++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-amdpt.c b/drivers/gpio/gpio-amdpt.c
index bbf53e289141..4d01d4341a67 100644
--- a/drivers/gpio/gpio-amdpt.c
+++ b/drivers/gpio/gpio-amdpt.c
@@ -14,6 +14,7 @@
 #include <linux/platform_device.h>

 #define PT_TOTAL_GPIO 8
+#define PT_TOTAL_GPIO_EX 24

 /* PCI-E MMIO register offsets */
 #define PT_DIRECTION_REG   0x00
@@ -72,10 +73,12 @@ static void pt_gpio_free(struct gpio_chip *gc, unsigned offset)
 static int pt_gpio_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
+	struct acpi_device *acpi_dev;
+	acpi_handle handle = ACPI_HANDLE(dev);
 	struct pt_gpio_chip *pt_gpio;
 	int ret = 0;

-	if (!ACPI_COMPANION(dev)) {
+	if (acpi_bus_get_device(handle, &acpi_dev)) {
 		dev_err(dev, "PT GPIO device node not found\n");
 		return -ENODEV;
 	}
@@ -100,10 +103,14 @@ static int pt_gpio_probe(struct platform_device *pdev)
 		return ret;
 	}

+	if (!strncmp(acpi_dev_name(acpi_dev), "AMDIF031", 8))
+		pt_gpio->gc.ngpio = PT_TOTAL_GPIO_EX;
+	else
+		pt_gpio->gc.ngpio = PT_TOTAL_GPIO;
+
 	pt_gpio->gc.owner            = THIS_MODULE;
 	pt_gpio->gc.request          = pt_gpio_request;
 	pt_gpio->gc.free             = pt_gpio_free;
-	pt_gpio->gc.ngpio            = PT_TOTAL_GPIO;
 #if defined(CONFIG_OF_GPIO)
 	pt_gpio->gc.of_node          = dev->of_node;
 #endif
@@ -135,6 +142,7 @@ static int pt_gpio_remove(struct platform_device *pdev)
 static const struct acpi_device_id pt_gpio_acpi_match[] = {
 	{ "AMDF030", 0 },
 	{ "AMDIF030", 0 },
+	{ "AMDIF031", 0 },
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, pt_gpio_acpi_match);
--
2.30.2