diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-rcar.c | 77 |
1 files changed, 26 insertions, 51 deletions
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index 3cbb25ecfc7a..1ed52fc026cb 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -25,7 +25,6 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/pinctrl/consumer.h> -#include <linux/platform_data/gpio-rcar.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/spinlock.h> @@ -34,12 +33,12 @@ struct gpio_rcar_priv { void __iomem *base; spinlock_t lock; - struct gpio_rcar_config config; struct platform_device *pdev; struct gpio_chip gpio_chip; struct irq_chip irq_chip; - unsigned int irq_parent; struct clk *clk; + unsigned int irq_parent; + bool has_both_edge_trigger; }; #define IOINTSEL 0x00 /* General IO/Interrupt Switching Register */ @@ -121,7 +120,7 @@ static void gpio_rcar_config_interrupt_input_mode(struct gpio_rcar_priv *p, gpio_rcar_modify_bit(p, EDGLEVEL, hwirq, !level_trigger); /* Select one edge or both edges in BOTHEDGE */ - if (p->config.has_both_edge_trigger) + if (p->has_both_edge_trigger) gpio_rcar_modify_bit(p, BOTHEDGE, hwirq, both); /* Select "Interrupt Input Mode" in IOINTSEL */ @@ -161,7 +160,7 @@ static int gpio_rcar_irq_set_type(struct irq_data *d, unsigned int type) false); break; case IRQ_TYPE_EDGE_BOTH: - if (!p->config.has_both_edge_trigger) + if (!p->has_both_edge_trigger) return -EINVAL; gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false, true); @@ -355,39 +354,29 @@ static const struct of_device_id gpio_rcar_of_table[] = { MODULE_DEVICE_TABLE(of, gpio_rcar_of_table); -static int gpio_rcar_parse_pdata(struct gpio_rcar_priv *p) +static int gpio_rcar_parse_dt(struct gpio_rcar_priv *p, unsigned int *npins) { - struct gpio_rcar_config *pdata = dev_get_platdata(&p->pdev->dev); struct device_node *np = p->pdev->dev.of_node; + const struct of_device_id *match; + const struct gpio_rcar_info *info; struct of_phandle_args args; int ret; - if (pdata) { - p->config = *pdata; - } else if (IS_ENABLED(CONFIG_OF) && np) { - const struct of_device_id *match; - const struct gpio_rcar_info *info; + match = of_match_node(gpio_rcar_of_table, np); + if (!match) + return -EINVAL; - match = of_match_node(gpio_rcar_of_table, np); - if (!match) - return -EINVAL; + info = match->data; - info = match->data; + ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &args); + *npins = ret == 0 ? args.args[2] : RCAR_MAX_GPIO_PER_BANK; + p->has_both_edge_trigger = info->has_both_edge_trigger; - ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, - &args); - p->config.number_of_pins = ret == 0 ? args.args[2] - : RCAR_MAX_GPIO_PER_BANK; - p->config.gpio_base = -1; - p->config.has_both_edge_trigger = info->has_both_edge_trigger; - } - - if (p->config.number_of_pins == 0 || - p->config.number_of_pins > RCAR_MAX_GPIO_PER_BANK) { + if (*npins == 0 || *npins > RCAR_MAX_GPIO_PER_BANK) { dev_warn(&p->pdev->dev, - "Invalid number of gpio lines %u, using %u\n", - p->config.number_of_pins, RCAR_MAX_GPIO_PER_BANK); - p->config.number_of_pins = RCAR_MAX_GPIO_PER_BANK; + "Invalid number of gpio lines %u, using %u\n", *npins, + RCAR_MAX_GPIO_PER_BANK); + *npins = RCAR_MAX_GPIO_PER_BANK; } return 0; @@ -401,6 +390,7 @@ static int gpio_rcar_probe(struct platform_device *pdev) struct irq_chip *irq_chip; struct device *dev = &pdev->dev; const char *name = dev_name(dev); + unsigned int npins; int ret; p = devm_kzalloc(dev, sizeof(*p), GFP_KERNEL); @@ -410,8 +400,8 @@ static int gpio_rcar_probe(struct platform_device *pdev) p->pdev = pdev; spin_lock_init(&p->lock); - /* Get device configuration from DT node or platform data. */ - ret = gpio_rcar_parse_pdata(p); + /* Get device configuration from DT node */ + ret = gpio_rcar_parse_dt(p, &npins); if (ret < 0) return ret; @@ -451,8 +441,8 @@ static int gpio_rcar_probe(struct platform_device *pdev) gpio_chip->label = name; gpio_chip->parent = dev; gpio_chip->owner = THIS_MODULE; - gpio_chip->base = p->config.gpio_base; - gpio_chip->ngpio = p->config.number_of_pins; + gpio_chip->base = -1; + gpio_chip->ngpio = npins; irq_chip = &p->irq_chip; irq_chip->name = name; @@ -468,8 +458,8 @@ static int gpio_rcar_probe(struct platform_device *pdev) goto err0; } - ret = gpiochip_irqchip_add(gpio_chip, irq_chip, p->config.irq_base, - handle_level_irq, IRQ_TYPE_NONE); + ret = gpiochip_irqchip_add(gpio_chip, irq_chip, 0, handle_level_irq, + IRQ_TYPE_NONE); if (ret) { dev_err(dev, "cannot add irqchip\n"); goto err1; @@ -483,22 +473,7 @@ static int gpio_rcar_probe(struct platform_device *pdev) goto err1; } - dev_info(dev, "driving %d GPIOs\n", p->config.number_of_pins); - - /* warn in case of mismatch if irq base is specified */ - if (p->config.irq_base) { - ret = irq_find_mapping(gpio_chip->irqdomain, 0); - if (p->config.irq_base != ret) - dev_warn(dev, "irq base mismatch (%u/%u)\n", - p->config.irq_base, ret); - } - - if (p->config.pctl_name) { - ret = gpiochip_add_pin_range(gpio_chip, p->config.pctl_name, 0, - gpio_chip->base, gpio_chip->ngpio); - if (ret < 0) - dev_warn(dev, "failed to add pin range\n"); - } + dev_info(dev, "driving %d GPIOs\n", npins); return 0; |