diff options
Diffstat (limited to 'drivers/gpio/gpio-dwapb.c')
| -rw-r--r-- | drivers/gpio/gpio-dwapb.c | 78 |
1 files changed, 46 insertions, 32 deletions
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c index 597de1e..34779bb 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> @@ -22,10 +23,13 @@ #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/spinlock.h> #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 @@ -290,14 +294,14 @@ static void dwapb_configure_irqs(struct dwapb_gpio *gpio, struct dwapb_port_property *pp) { struct gpio_chip *gc = &port->gc; - struct device_node *node = pp->node; + struct fwnode_handle *fwnode = pp->fwnode; struct irq_chip_generic *irq_gc = NULL; unsigned int hwirq, ngpio = gc->ngpio; struct irq_chip_type *ct; int err, i; - gpio->domain = irq_domain_add_linear(node, ngpio, - &irq_generic_chip_ops, gpio); + gpio->domain = irq_domain_create_linear(fwnode, ngpio, + &irq_generic_chip_ops, gpio); if (!gpio->domain) return; @@ -409,13 +413,13 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio, err = bgpio_init(&port->gc, gpio->dev, 4, dat, set, NULL, dirout, NULL, false); if (err) { - dev_err(gpio->dev, "failed to init gpio chip for %s\n", - pp->name); + dev_err(gpio->dev, "failed to init gpio chip for port%d\n", + port->idx); return err; } #ifdef CONFIG_OF_GPIO - port->gc.of_node = pp->node; + port->gc.of_node = to_of_node(pp->fwnode); #endif port->gc.ngpio = pp->ngpio; port->gc.base = pp->gpio_base; @@ -429,11 +433,15 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio, err = gpiochip_add_data(&port->gc, port); if (err) - dev_err(gpio->dev, "failed to register gpiochip for %s\n", - pp->name); + dev_err(gpio->dev, "failed to register gpiochip for port%d\n", + port->idx); else port->is_registered = true; + /* Add GPIO-signaled ACPI event support */ + if (pp->irq) + acpi_gpiochip_request_interrupts(&port->gc); + return err; } @@ -447,19 +455,15 @@ static void dwapb_gpio_unregister(struct dwapb_gpio *gpio) } static struct dwapb_platform_data * -dwapb_gpio_get_pdata_of(struct device *dev) +dwapb_gpio_get_pdata(struct device *dev) { - struct device_node *node, *port_np; + struct fwnode_handle *fwnode; struct dwapb_platform_data *pdata; struct dwapb_port_property *pp; int nports; int i; - node = dev->of_node; - if (!IS_ENABLED(CONFIG_OF_GPIO) || !node) - return ERR_PTR(-ENODEV); - - nports = of_get_child_count(node); + nports = device_get_child_node_count(dev); if (nports == 0) return ERR_PTR(-ENODEV); @@ -474,21 +478,22 @@ dwapb_gpio_get_pdata_of(struct device *dev) pdata->nports = nports; i = 0; - for_each_child_of_node(node, port_np) { + device_for_each_child_node(dev, fwnode) { pp = &pdata->properties[i++]; - pp->node = port_np; + pp->fwnode = fwnode; - if (of_property_read_u32(port_np, "reg", &pp->idx) || + if (fwnode_property_read_u32(fwnode, "reg", &pp->idx) || pp->idx >= DWAPB_MAX_PORTS) { - dev_err(dev, "missing/invalid port index for %s\n", - port_np->full_name); + dev_err(dev, + "missing/invalid port index for port%d\n", i); return ERR_PTR(-EINVAL); } - if (of_property_read_u32(port_np, "snps,nr-gpios", + if (fwnode_property_read_u32(fwnode, "snps,nr-gpios", &pp->ngpio)) { - dev_info(dev, "failed to get number of gpios for %s\n", - port_np->full_name); + dev_info(dev, + "failed to get number of gpios for port%d\n", + i); pp->ngpio = 32; } @@ -496,18 +501,19 @@ dwapb_gpio_get_pdata_of(struct device *dev) * Only port A can provide interrupts in all configurations of * the IP. */ - if (pp->idx == 0 && - of_property_read_bool(port_np, "interrupt-controller")) { - pp->irq = irq_of_parse_and_map(port_np, 0); - if (!pp->irq) { - dev_warn(dev, "no irq for bank %s\n", - port_np->full_name); - } + if (dev->of_node && pp->idx == 0 && + fwnode_property_read_bool(fwnode, + "interrupt-controller")) { + pp->irq = irq_of_parse_and_map(to_of_node(fwnode), 0); + if (!pp->irq) + 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; - pp->name = port_np->full_name; } return pdata; @@ -523,7 +529,7 @@ static int dwapb_gpio_probe(struct platform_device *pdev) struct dwapb_platform_data *pdata = dev_get_platdata(dev); if (!pdata) { - pdata = dwapb_gpio_get_pdata_of(dev); + pdata = dwapb_gpio_get_pdata(dev); if (IS_ERR(pdata)) return PTR_ERR(pdata); } @@ -580,6 +586,13 @@ 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}, + {"APMC0D07", 0}, + { } +}; +MODULE_DEVICE_TABLE(acpi, dwapb_acpi_match); + #ifdef CONFIG_PM_SLEEP static int dwapb_gpio_suspend(struct device *dev) { @@ -674,6 +687,7 @@ 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, |