gpio: mpc8xxx: Add ACPI support
Current implementation only supports DT, now add ACPI support. Signed-off-by: Ran Wang <ran.wang_1@nxp.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
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@ -9,6 +9,7 @@
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* kind, whether express or implied.
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*/
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#include <linux/acpi.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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@ -18,6 +19,8 @@
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#include <linux/of_address.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <linux/property.h>
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#include <linux/mod_devicetable.h>
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#include <linux/slab.h>
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#include <linux/irq.h>
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#include <linux/gpio/driver.h>
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@ -303,8 +306,8 @@ static int mpc8xxx_probe(struct platform_device *pdev)
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struct device_node *np = pdev->dev.of_node;
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struct mpc8xxx_gpio_chip *mpc8xxx_gc;
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struct gpio_chip *gc;
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const struct mpc8xxx_gpio_devtype *devtype =
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of_device_get_match_data(&pdev->dev);
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const struct mpc8xxx_gpio_devtype *devtype = NULL;
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struct fwnode_handle *fwnode;
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int ret;
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mpc8xxx_gc = devm_kzalloc(&pdev->dev, sizeof(*mpc8xxx_gc), GFP_KERNEL);
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@ -315,14 +318,14 @@ static int mpc8xxx_probe(struct platform_device *pdev)
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raw_spin_lock_init(&mpc8xxx_gc->lock);
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mpc8xxx_gc->regs = of_iomap(np, 0);
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if (!mpc8xxx_gc->regs)
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return -ENOMEM;
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mpc8xxx_gc->regs = devm_platform_ioremap_resource(pdev, 0);
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if (IS_ERR(mpc8xxx_gc->regs))
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return PTR_ERR(mpc8xxx_gc->regs);
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gc = &mpc8xxx_gc->gc;
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gc->parent = &pdev->dev;
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if (of_property_read_bool(np, "little-endian")) {
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if (device_property_read_bool(&pdev->dev, "little-endian")) {
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ret = bgpio_init(gc, &pdev->dev, 4,
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mpc8xxx_gc->regs + GPIO_DAT,
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NULL, NULL,
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@ -345,6 +348,7 @@ static int mpc8xxx_probe(struct platform_device *pdev)
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mpc8xxx_gc->direction_output = gc->direction_output;
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devtype = device_get_match_data(&pdev->dev);
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if (!devtype)
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devtype = &mpc8xxx_gpio_devtype_default;
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@ -369,24 +373,29 @@ static int mpc8xxx_probe(struct platform_device *pdev)
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* associated input enable must be set (GPIOxGPIE[IEn]=1) to propagate
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* the port value to the GPIO Data Register.
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*/
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fwnode = dev_fwnode(&pdev->dev);
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if (of_device_is_compatible(np, "fsl,qoriq-gpio") ||
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of_device_is_compatible(np, "fsl,ls1028a-gpio") ||
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of_device_is_compatible(np, "fsl,ls1088a-gpio"))
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of_device_is_compatible(np, "fsl,ls1088a-gpio") ||
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is_acpi_node(fwnode))
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gc->write_reg(mpc8xxx_gc->regs + GPIO_IBE, 0xffffffff);
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ret = gpiochip_add_data(gc, mpc8xxx_gc);
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if (ret) {
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pr_err("%pOF: GPIO chip registration failed with status %d\n",
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np, ret);
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dev_err(&pdev->dev,
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"GPIO chip registration failed with status %d\n", ret);
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goto err;
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}
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mpc8xxx_gc->irqn = irq_of_parse_and_map(np, 0);
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mpc8xxx_gc->irqn = platform_get_irq(pdev, 0);
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if (!mpc8xxx_gc->irqn)
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return 0;
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mpc8xxx_gc->irq = irq_domain_add_linear(np, MPC8XXX_GPIO_PINS,
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&mpc8xxx_gpio_irq_ops, mpc8xxx_gc);
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mpc8xxx_gc->irq = irq_domain_create_linear(fwnode,
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MPC8XXX_GPIO_PINS,
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&mpc8xxx_gpio_irq_ops,
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mpc8xxx_gc);
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if (!mpc8xxx_gc->irq)
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return 0;
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@ -399,8 +408,9 @@ static int mpc8xxx_probe(struct platform_device *pdev)
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IRQF_SHARED, "gpio-cascade",
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mpc8xxx_gc);
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if (ret) {
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dev_err(&pdev->dev, "%s: failed to devm_request_irq(%d), ret = %d\n",
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np->full_name, mpc8xxx_gc->irqn, ret);
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dev_err(&pdev->dev,
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"failed to devm_request_irq(%d), ret = %d\n",
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mpc8xxx_gc->irqn, ret);
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goto err;
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}
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@ -425,12 +435,21 @@ static int mpc8xxx_remove(struct platform_device *pdev)
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return 0;
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}
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#ifdef CONFIG_ACPI
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static const struct acpi_device_id gpio_acpi_ids[] = {
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{"NXP0031",},
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{ }
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};
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MODULE_DEVICE_TABLE(acpi, gpio_acpi_ids);
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#endif
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static struct platform_driver mpc8xxx_plat_driver = {
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.probe = mpc8xxx_probe,
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.remove = mpc8xxx_remove,
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.driver = {
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.name = "gpio-mpc8xxx",
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.of_match_table = mpc8xxx_gpio_ids,
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.acpi_match_table = ACPI_PTR(gpio_acpi_ids),
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},
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};
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