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ODROID-COMMON: BACKPORT: add amlogic gpio to irq

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FROM: https://patchwork.kernel.org/project/linux-arm-kernel/patch/tencent_CF204C2A172AA4207DADEEB243A75474B10A@qq.com/

Signed-off-by: Dongjin Kim <tobetter@gmail.com>
Change-Id: Id20016e76ae3040fb70d0abf554640d7cddf6d0e
This commit is contained in:
Lin shenghuan
2020-11-27 11:52:05 +08:00
committed by Mauro Ribeiro
parent 9c0235f0cc
commit b6a1bb2469
2 changed files with 38 additions and 0 deletions
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36
drivers/pinctrl/meson/pinctrl-meson.c
View File

@@ -51,6 +51,7 @@
#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/seq_file.h>
#include <linux/of_irq.h>
#include "../core.h"
#include "../pinctrl-utils.h"
@@ -601,6 +602,34 @@ static int meson_gpio_get(struct gpio_chip *chip, unsigned gpio)
return !!(val & BIT(bit));
}
static int meson_gpio_to_irq(struct gpio_chip *chip, unsigned int gpio)
{
struct meson_pinctrl *pc = gpiochip_get_data(chip);
struct meson_bank *bank;
struct irq_fwspec fwspec;
int hwirq;
if (meson_get_bank(pc, gpio, &bank))
return -EINVAL;
if (bank->irq_first < 0) {
dev_warn(pc->dev, "no support irq for pin[%d]\n", gpio);
return -EINVAL;
}
if (!pc->of_irq) {
dev_err(pc->dev, "invalid device node of gpio INTC\n");
return -EINVAL;
}
hwirq = gpio - bank->first + bank->irq_first;
fwspec.fwnode = of_node_to_fwnode(pc->of_irq);
fwspec.param_count = 2;
fwspec.param[0] = hwirq;
fwspec.param[1] = IRQ_TYPE_NONE;
return irq_create_fwspec_mapping(&fwspec);
}
static int meson_gpiolib_register(struct meson_pinctrl *pc)
{
int ret;
@@ -616,6 +645,7 @@ static int meson_gpiolib_register(struct meson_pinctrl *pc)
pc->chip.direction_output = meson_gpio_direction_output;
pc->chip.get = meson_gpio_get;
pc->chip.set = meson_gpio_set;
pc->chip.to_irq = meson_gpio_to_irq;
pc->chip.base = -1;
pc->chip.ngpio = pc->data->num_pins;
pc->chip.can_sleep = false;
@@ -679,6 +709,12 @@ static int meson_pinctrl_parse_dt(struct meson_pinctrl *pc)
pc->fwnode = gpiochip_node_get_first(pc->dev);
gpio_np = to_of_node(pc->fwnode);
pc->of_irq = of_find_compatible_node(NULL,
NULL, "amlogic,meson-gpio-intc");
if (!pc->of_irq)
pc->of_irq = of_find_compatible_node(NULL,
NULL, "amlogic,meson-gpio-intc-ext");
pc->reg_mux = meson_map_resource(pc, gpio_np, "mux");
if (IS_ERR_OR_NULL(pc->reg_mux)) {
dev_err(pc->dev, "mux registers not found\n");

2
drivers/pinctrl/meson/pinctrl-meson.h
View File

@@ -134,6 +134,8 @@ struct meson_pinctrl {
struct regmap *reg_ds;
struct gpio_chip chip;
struct fwnode_handle *fwnode;
struct device_node *of_node;
struct device_node *of_irq;
};
#define FUNCTION(fn) \