build/patch/kernel/archive/meson64-6.4/jethome-0001-Fix-meson64-add-gpio-irq-patch-from-https-lkml.org-l.patch

101 lines
3.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: usera <adeep@lexina.in>
Date: Mon, 12 Apr 2021 16:16:42 +0200
Subject: Fix:meson64: add gpio irq (patch from
https://lkml.org/lkml/2020/11/27/8)
Signed-off-by: Vyacheslav Bocharov <devel@lexina.in>
---
drivers/pinctrl/meson/pinctrl-meson.c | 41 ++++++++++
drivers/pinctrl/meson/pinctrl-meson.h | 1 +
2 files changed, 42 insertions(+)
diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
index 530f3f934e19..690832c48f79 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.c
+++ b/drivers/pinctrl/meson/pinctrl-meson.c
@@ -52,6 +52,7 @@
#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"
@@ -602,6 +603,40 @@ 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;
+ printk("gpio irq setup: hwirq: 0x%X irqfirst: 0x%X irqlast: 0x%X pin[%d]\n", hwirq, bank->irq_first, bank->irq_last, gpio);
+ if (hwirq > bank->irq_last)
+ {
+ dev_warn(pc->dev, "no more irq for pin[%d]\n", gpio);
+ return -EINVAL;
+ }
+ 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;
@@ -617,6 +652,7 @@ 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;
@@ -680,6 +716,11 @@ 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");
diff --git a/drivers/pinctrl/meson/pinctrl-meson.h b/drivers/pinctrl/meson/pinctrl-meson.h
index 34fc4e8612e4..0f9fa04513ea 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.h
+++ b/drivers/pinctrl/meson/pinctrl-meson.h
@@ -134,6 +134,7 @@ struct meson_pinctrl {
struct regmap *reg_ds;
struct gpio_chip chip;
struct fwnode_handle *fwnode;
+ struct device_node *of_irq;
};
#define FUNCTION(fn) \
--
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