diff options
| author | Kamlakant Patel <kamlakant.patel@broadcom.com> | 2016-06-05 11:30:44 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-06-08 11:54:13 +0300 |
| commit | baa1b920a8408134e4ab117e4bdb216cb09b1869 (patch) | |
| tree | 95ef37d84cdff4450819bfb6b4ccf98f23a7c247 /drivers/gpio/gpio-xlp.c | |
| parent | 1630a0624a1b8e8d8d9c0cb1a584c5a9d4671101 (diff) | |
| download | linux-baa1b920a8408134e4ab117e4bdb216cb09b1869.tar.xz | |
gpio: Add ACPI support for XLP GPIO controller
Add ACPI support for GPIO controller on Broadcom Vulcan ARM64.
ACPI ID for this device is BRCM9006.
Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-xlp.c')
| -rw-r--r-- | drivers/gpio/gpio-xlp.c | 36 |
1 files changed, 29 insertions, 7 deletions
diff --git a/drivers/gpio/gpio-xlp.c b/drivers/gpio/gpio-xlp.c index 6acf8aa3b02d..4620d050e5a8 100644 --- a/drivers/gpio/gpio-xlp.c +++ b/drivers/gpio/gpio-xlp.c @@ -19,6 +19,7 @@ #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/irqchip/chained_irq.h> +#include <linux/acpi.h> /* * XLP GPIO has multiple 32 bit registers for each feature where each register @@ -299,7 +300,6 @@ static int xlp_gpio_probe(struct platform_device *pdev) struct gpio_chip *gc; struct resource *iores; struct xlp_gpio_priv *priv; - const struct of_device_id *of_id; void __iomem *gpio_base; int irq_base, irq, err; int ngpio; @@ -321,13 +321,26 @@ static int xlp_gpio_probe(struct platform_device *pdev) if (irq < 0) return irq; - of_id = of_match_device(xlp_gpio_of_ids, &pdev->dev); - if (!of_id) { - dev_err(&pdev->dev, "Failed to get soc type!\n"); - return -ENODEV; - } + if (pdev->dev.of_node) { + const struct of_device_id *of_id; - soc_type = (uintptr_t) of_id->data; + of_id = of_match_device(xlp_gpio_of_ids, &pdev->dev); + if (!of_id) { + dev_err(&pdev->dev, "Unable to match OF ID\n"); + return -ENODEV; + } + soc_type = (uintptr_t) of_id->data; + } else { + const struct acpi_device_id *acpi_id; + + acpi_id = acpi_match_device(pdev->dev.driver->acpi_match_table, + &pdev->dev); + if (!acpi_id || !acpi_id->driver_data) { + dev_err(&pdev->dev, "Unable to match ACPI ID\n"); + return -ENODEV; + } + soc_type = (uintptr_t) acpi_id->driver_data; + } switch (soc_type) { case XLP_GPIO_VARIANT_XLP832: @@ -425,10 +438,19 @@ out_free_desc: return err; } +#ifdef CONFIG_ACPI +static const struct acpi_device_id xlp_gpio_acpi_match[] = { + { "BRCM9006", GPIO_VARIANT_VULCAN }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, xlp_gpio_acpi_match); +#endif + static struct platform_driver xlp_gpio_driver = { .driver = { .name = "xlp-gpio", .of_match_table = xlp_gpio_of_ids, + .acpi_match_table = ACPI_PTR(xlp_gpio_acpi_match), }, .probe = xlp_gpio_probe, }; |