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Message-Id: <20221019061201.5194-2-clamor95@gmail.com>
Date: Wed, 19 Oct 2022 09:12:01 +0300
From: Svyatoslav Ryhel <clamor95@...il.com>
To: Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <brgl@...ev.pl>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Dmitry Osipenko <digetx@...il.com>
Cc: linux-gpio@...r.kernel.org, linux-tegra@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v4 1/1] gpio: tegra: Convert to immutable irq chip
Update the driver to use an immutable IRQ chip to fix this warning:
"not an immutable chip, please consider fixing it!"
Preserve per-chip labels by adding an ->irq_print_chip() callback.
Tested-by: Svyatoslav Ryhel <clamor95@...il.com> # TF201 T30
Tested-by: Robert Eckelmann <longnoserob@...il.com> # TF101 T20
Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
Reviewed-by: Dmitry Osipenko <digetx@...il.com>
---
Changes since V3:
- dropped Switch to new *_PM_OPS macros
Changes since V2:
- use CONFIG_PM_SLEEP ifdefs
Changes since V1:
- Added tested-by info from testers
- Patch itself is same, it had no review for 3 weeks
- Test robot is triggering for pm_sleep_ptr, should not it be used to omit CONFIG_PM_SLEEP ifdefs?
drivers/gpio/gpio-tegra.c | 60 ++++++++++++++++++++++++++++-----------
1 file changed, 44 insertions(+), 16 deletions(-)
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index e4fb4cb38a0f..5b265a6fd3c1 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -18,6 +18,7 @@
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/module.h>
+#include <linux/seq_file.h>
#include <linux/irqdomain.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/pinctrl/consumer.h>
@@ -94,7 +95,6 @@ struct tegra_gpio_info {
struct tegra_gpio_bank *bank_info;
const struct tegra_gpio_soc_config *soc;
struct gpio_chip gc;
- struct irq_chip ic;
u32 bank_count;
unsigned int *irqs;
};
@@ -288,6 +288,7 @@ static void tegra_gpio_irq_mask(struct irq_data *d)
unsigned int gpio = d->hwirq;
tegra_gpio_mask_write(tgi, GPIO_MSK_INT_ENB(tgi, gpio), gpio, 0);
+ gpiochip_disable_irq(chip, gpio);
}
static void tegra_gpio_irq_unmask(struct irq_data *d)
@@ -296,6 +297,7 @@ static void tegra_gpio_irq_unmask(struct irq_data *d)
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
unsigned int gpio = d->hwirq;
+ gpiochip_enable_irq(chip, gpio);
tegra_gpio_mask_write(tgi, GPIO_MSK_INT_ENB(tgi, gpio), gpio, 1);
}
@@ -598,10 +600,47 @@ static void tegra_gpio_irq_release_resources(struct irq_data *d)
tegra_gpio_enable(tgi, d->hwirq);
}
+static void tegra_gpio_irq_print_chip(struct irq_data *d, struct seq_file *s)
+{
+ struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
+
+ seq_printf(s, dev_name(chip->parent));
+}
+
+static const struct irq_chip tegra_gpio_irq_chip = {
+ .irq_shutdown = tegra_gpio_irq_shutdown,
+ .irq_ack = tegra_gpio_irq_ack,
+ .irq_mask = tegra_gpio_irq_mask,
+ .irq_unmask = tegra_gpio_irq_unmask,
+ .irq_set_type = tegra_gpio_irq_set_type,
+#ifdef CONFIG_PM_SLEEP
+ .irq_set_wake = tegra_gpio_irq_set_wake,
+#endif
+ .irq_print_chip = tegra_gpio_irq_print_chip,
+ .irq_request_resources = tegra_gpio_irq_request_resources,
+ .irq_release_resources = tegra_gpio_irq_release_resources,
+ .flags = IRQCHIP_IMMUTABLE,
+};
+
+static const struct irq_chip tegra210_gpio_irq_chip = {
+ .irq_shutdown = tegra_gpio_irq_shutdown,
+ .irq_ack = tegra_gpio_irq_ack,
+ .irq_mask = tegra_gpio_irq_mask,
+ .irq_unmask = tegra_gpio_irq_unmask,
+ .irq_set_affinity = tegra_gpio_irq_set_affinity,
+ .irq_set_type = tegra_gpio_irq_set_type,
+#ifdef CONFIG_PM_SLEEP
+ .irq_set_wake = tegra_gpio_irq_set_wake,
+#endif
+ .irq_print_chip = tegra_gpio_irq_print_chip,
+ .irq_request_resources = tegra_gpio_irq_request_resources,
+ .irq_release_resources = tegra_gpio_irq_release_resources,
+ .flags = IRQCHIP_IMMUTABLE,
+};
+
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>
-#include <linux/seq_file.h>
static int tegra_dbg_gpio_show(struct seq_file *s, void *unused)
{
@@ -689,18 +728,6 @@ static int tegra_gpio_probe(struct platform_device *pdev)
tgi->gc.ngpio = tgi->bank_count * 32;
tgi->gc.parent = &pdev->dev;
- tgi->ic.name = "GPIO";
- tgi->ic.irq_ack = tegra_gpio_irq_ack;
- tgi->ic.irq_mask = tegra_gpio_irq_mask;
- tgi->ic.irq_unmask = tegra_gpio_irq_unmask;
- tgi->ic.irq_set_type = tegra_gpio_irq_set_type;
- tgi->ic.irq_shutdown = tegra_gpio_irq_shutdown;
-#ifdef CONFIG_PM_SLEEP
- tgi->ic.irq_set_wake = tegra_gpio_irq_set_wake;
-#endif
- tgi->ic.irq_request_resources = tegra_gpio_irq_request_resources;
- tgi->ic.irq_release_resources = tegra_gpio_irq_release_resources;
-
platform_set_drvdata(pdev, tgi);
if (tgi->soc->debounce_supported)
@@ -733,7 +760,6 @@ static int tegra_gpio_probe(struct platform_device *pdev)
}
irq = &tgi->gc.irq;
- irq->chip = &tgi->ic;
irq->fwnode = of_node_to_fwnode(pdev->dev.of_node);
irq->child_to_parent_hwirq = tegra_gpio_child_to_parent_hwirq;
irq->populate_parent_alloc_arg = tegra_gpio_populate_parent_fwspec;
@@ -752,7 +778,9 @@ static int tegra_gpio_probe(struct platform_device *pdev)
if (!irq->parent_domain)
return -EPROBE_DEFER;
- tgi->ic.irq_set_affinity = tegra_gpio_irq_set_affinity;
+ gpio_irq_chip_set_chip(irq, &tegra210_gpio_irq_chip);
+ } else {
+ gpio_irq_chip_set_chip(irq, &tegra_gpio_irq_chip);
}
tgi->regs = devm_platform_ioremap_resource(pdev, 0);
--
2.34.1
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