101 lines
3.1 KiB
Diff
101 lines
3.1 KiB
Diff
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From da3c42b90664a707eecb15f40f68ecf1358b6085 Mon Sep 17 00:00:00 2001
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From: usera <adeep@lexina.in>
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Date: Mon, 12 Apr 2021 17:16:42 +0300
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Subject: [PATCH 05/10] Fix:meson64: add gpio irq (patch from
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https://lkml.org/lkml/2020/11/27/8)
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Signed-off-by: Vyacheslav Bocharov <devel@lexina.in>
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---
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drivers/pinctrl/meson/pinctrl-meson.c | 41 +++++++++++++++++++++++++++
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drivers/pinctrl/meson/pinctrl-meson.h | 1 +
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2 files changed, 42 insertions(+)
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diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
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index 20683cd072bb..5263fed788f1 100644
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--- a/drivers/pinctrl/meson/pinctrl-meson.c
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+++ b/drivers/pinctrl/meson/pinctrl-meson.c
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@@ -51,6 +51,7 @@
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/seq_file.h>
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+#include <linux/of_irq.h>
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#include "../core.h"
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#include "../pinctrl-utils.h"
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@@ -598,6 +599,40 @@ static int meson_gpio_get(struct gpio_chip *chip, unsigned gpio)
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return !!(val & BIT(bit));
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}
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+static int meson_gpio_to_irq(struct gpio_chip *chip, unsigned int gpio)
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+{
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+ struct meson_pinctrl *pc = gpiochip_get_data(chip);
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+ struct meson_bank *bank;
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+ struct irq_fwspec fwspec;
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+ int hwirq;
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+
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+ if (meson_get_bank(pc, gpio, &bank))
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+ return -EINVAL;
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+
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+ if (bank->irq_first < 0) {
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+ dev_warn(pc->dev, "no support irq for pin[%d]\n", gpio);
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+ return -EINVAL;
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+ }
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+ if (!pc->of_irq) {
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+ dev_err(pc->dev, "invalid device node of gpio INTC\n");
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+ return -EINVAL;
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+ }
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+
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+ hwirq = gpio - bank->first + bank->irq_first;
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+ printk("gpio irq setup: hwirq: 0x%X irqfirst: 0x%X irqlast: 0x%X pin[%d]\n", hwirq, bank->irq_first, bank->irq_last, gpio);
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+ if (hwirq > bank->irq_last)
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+ {
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+ dev_warn(pc->dev, "no more irq for pin[%d]\n", gpio);
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+ return -EINVAL;
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+ }
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+ fwspec.fwnode = of_node_to_fwnode(pc->of_irq);
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+ fwspec.param_count = 2;
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+ fwspec.param[0] = hwirq;
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+ fwspec.param[1] = IRQ_TYPE_NONE;
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+
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+ return irq_create_fwspec_mapping(&fwspec);
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+}
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+
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static int meson_gpiolib_register(struct meson_pinctrl *pc)
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{
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int ret;
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@@ -612,6 +647,7 @@ static int meson_gpiolib_register(struct meson_pinctrl *pc)
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pc->chip.direction_output = meson_gpio_direction_output;
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pc->chip.get = meson_gpio_get;
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pc->chip.set = meson_gpio_set;
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+ pc->chip.to_irq = meson_gpio_to_irq;
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pc->chip.base = -1;
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pc->chip.ngpio = pc->data->num_pins;
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pc->chip.can_sleep = false;
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@@ -682,6 +718,11 @@ static int meson_pinctrl_parse_dt(struct meson_pinctrl *pc,
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pc->of_node = gpio_np;
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+ pc->of_irq = of_find_compatible_node(NULL,
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+ NULL, "amlogic,meson-gpio-intc");
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+ if (!pc->of_irq)
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+ pc->of_irq = of_find_compatible_node(NULL,
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+ NULL, "amlogic,meson-gpio-intc-ext");
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pc->reg_mux = meson_map_resource(pc, gpio_np, "mux");
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if (IS_ERR_OR_NULL(pc->reg_mux)) {
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dev_err(pc->dev, "mux registers not found\n");
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diff --git a/drivers/pinctrl/meson/pinctrl-meson.h b/drivers/pinctrl/meson/pinctrl-meson.h
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index f8b0ff9d419a..0f808bbece4a 100644
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--- a/drivers/pinctrl/meson/pinctrl-meson.h
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+++ b/drivers/pinctrl/meson/pinctrl-meson.h
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@@ -131,6 +131,7 @@ struct meson_pinctrl {
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struct regmap *reg_ds;
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struct gpio_chip chip;
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struct device_node *of_node;
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+ struct device_node *of_irq;
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};
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#define FUNCTION(fn) \
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--
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2.30.2
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