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Message-Id: <20200720145412.24221-1-krzk@kernel.org>
Date: Mon, 20 Jul 2020 16:54:12 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: linus.walleij@...aro.org
Cc: linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
linux-gpio@...r.kernel.org,
Marek Szyprowski <m.szyprowski@...sung.com>,
Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH] pinctrl: samsung: Use bank name as irqchip name
From: Marek Szyprowski <m.szyprowski@...sung.com>
Use the bank name as the irqchip name. This name is later visible in
/proc/interrupts, what makes it possible to easily identify each
GPIO interrupt.
/proc/interrupts before this patch:
143: 0 exynos4210_wkup_irq_chip 7 Edge hdmi
144: 0 exynos4210_wkup_irq_chip 6 Level wm8994
145: 1 exynos4210_wkup_irq_chip 7 Edge max77686-pmic, max77686-rtc
146: 1 exynos_gpio_irq_chip 3 Edge 3-0048
/proc/interrupts after this patch:
143: 0 gpx3 7 Edge hdmi
144: 0 gpx3 6 Level wm8994
145: 1 gpx0 7 Edge max77686-pmic, max77686-rtc
146: 1 gpm2 3 Edge 3-0048
Handling of the eint_wake_mask_value has been reworked, because each bank
has now its own exynos_irq_chip structure allocated.
Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
Hi Linus,
I have only one patch queued for Samsung pinctrl. Can you apply it
directly?
Best regards,
Krzysztof
---
drivers/pinctrl/samsung/pinctrl-exynos.c | 58 +++++++++++++-----------
1 file changed, 32 insertions(+), 26 deletions(-)
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c
index 84501c785473..b9ea09fabf84 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos.c
+++ b/drivers/pinctrl/samsung/pinctrl-exynos.c
@@ -38,7 +38,7 @@ struct exynos_irq_chip {
u32 eint_con;
u32 eint_mask;
u32 eint_pend;
- u32 eint_wake_mask_value;
+ u32 *eint_wake_mask_value;
u32 eint_wake_mask_reg;
void (*set_eint_wakeup_mask)(struct samsung_pinctrl_drv_data *drvdata,
struct exynos_irq_chip *irq_chip);
@@ -207,7 +207,7 @@ static void exynos_irq_release_resources(struct irq_data *irqd)
/*
* irq_chip for gpio interrupts.
*/
-static struct exynos_irq_chip exynos_gpio_irq_chip = {
+static const struct exynos_irq_chip exynos_gpio_irq_chip __initconst = {
.chip = {
.name = "exynos_gpio_irq_chip",
.irq_unmask = exynos_irq_unmask,
@@ -274,7 +274,7 @@ struct exynos_eint_gpio_save {
* exynos_eint_gpio_init() - setup handling of external gpio interrupts.
* @d: driver data of samsung pinctrl driver.
*/
-int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
+__init int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
{
struct samsung_pin_bank *bank;
struct device *dev = d->dev;
@@ -297,6 +297,15 @@ int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
for (i = 0; i < d->nr_banks; ++i, ++bank) {
if (bank->eint_type != EINT_TYPE_GPIO)
continue;
+
+ bank->irq_chip = devm_kmemdup(dev, &exynos_gpio_irq_chip,
+ sizeof(*bank->irq_chip), GFP_KERNEL);
+ if (!bank->irq_chip) {
+ ret = -ENOMEM;
+ goto err_domains;
+ }
+ bank->irq_chip->chip.name = bank->name;
+
bank->irq_domain = irq_domain_add_linear(bank->of_node,
bank->nr_pins, &exynos_eint_irqd_ops, bank);
if (!bank->irq_domain) {
@@ -313,7 +322,6 @@ int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d)
goto err_domains;
}
- bank->irq_chip = &exynos_gpio_irq_chip;
}
return 0;
@@ -338,9 +346,9 @@ static int exynos_wkup_irq_set_wake(struct irq_data *irqd, unsigned int on)
pr_info("wake %s for irq %d\n", on ? "enabled" : "disabled", irqd->irq);
if (!on)
- our_chip->eint_wake_mask_value |= bit;
+ *our_chip->eint_wake_mask_value |= bit;
else
- our_chip->eint_wake_mask_value &= ~bit;
+ *our_chip->eint_wake_mask_value &= ~bit;
return 0;
}
@@ -360,10 +368,10 @@ exynos_pinctrl_set_eint_wakeup_mask(struct samsung_pinctrl_drv_data *drvdata,
pmu_regs = drvdata->retention_ctrl->priv;
dev_info(drvdata->dev,
"Setting external wakeup interrupt mask: 0x%x\n",
- irq_chip->eint_wake_mask_value);
+ *irq_chip->eint_wake_mask_value);
regmap_write(pmu_regs, irq_chip->eint_wake_mask_reg,
- irq_chip->eint_wake_mask_value);
+ *irq_chip->eint_wake_mask_value);
}
static void
@@ -382,10 +390,11 @@ s5pv210_pinctrl_set_eint_wakeup_mask(struct samsung_pinctrl_drv_data *drvdata,
clk_base = (void __iomem *) drvdata->retention_ctrl->priv;
- __raw_writel(irq_chip->eint_wake_mask_value,
+ __raw_writel(*irq_chip->eint_wake_mask_value,
clk_base + irq_chip->eint_wake_mask_reg);
}
+static u32 eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED;
/*
* irq_chip for wakeup interrupts
*/
@@ -403,7 +412,7 @@ static const struct exynos_irq_chip s5pv210_wkup_irq_chip __initconst = {
.eint_con = EXYNOS_WKUP_ECON_OFFSET,
.eint_mask = EXYNOS_WKUP_EMASK_OFFSET,
.eint_pend = EXYNOS_WKUP_EPEND_OFFSET,
- .eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED,
+ .eint_wake_mask_value = &eint_wake_mask_value,
/* Only differences with exynos4210_wkup_irq_chip: */
.eint_wake_mask_reg = S5PV210_EINT_WAKEUP_MASK,
.set_eint_wakeup_mask = s5pv210_pinctrl_set_eint_wakeup_mask,
@@ -423,7 +432,7 @@ static const struct exynos_irq_chip exynos4210_wkup_irq_chip __initconst = {
.eint_con = EXYNOS_WKUP_ECON_OFFSET,
.eint_mask = EXYNOS_WKUP_EMASK_OFFSET,
.eint_pend = EXYNOS_WKUP_EPEND_OFFSET,
- .eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED,
+ .eint_wake_mask_value = &eint_wake_mask_value,
.eint_wake_mask_reg = EXYNOS_EINT_WAKEUP_MASK,
.set_eint_wakeup_mask = exynos_pinctrl_set_eint_wakeup_mask,
};
@@ -442,7 +451,7 @@ static const struct exynos_irq_chip exynos7_wkup_irq_chip __initconst = {
.eint_con = EXYNOS7_WKUP_ECON_OFFSET,
.eint_mask = EXYNOS7_WKUP_EMASK_OFFSET,
.eint_pend = EXYNOS7_WKUP_EPEND_OFFSET,
- .eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED,
+ .eint_wake_mask_value = &eint_wake_mask_value,
.eint_wake_mask_reg = EXYNOS5433_EINT_WAKEUP_MASK,
.set_eint_wakeup_mask = exynos_pinctrl_set_eint_wakeup_mask,
};
@@ -513,7 +522,7 @@ static void exynos_irq_demux_eint16_31(struct irq_desc *desc)
* exynos_eint_wkup_init() - setup handling of external wakeup interrupts.
* @d: driver data of samsung pinctrl driver.
*/
-int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
+__init int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
{
struct device *dev = d->dev;
struct device_node *wkup_np = NULL;
@@ -521,7 +530,7 @@ int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
struct samsung_pin_bank *bank;
struct exynos_weint_data *weint_data;
struct exynos_muxed_weint_data *muxed_data;
- struct exynos_irq_chip *irq_chip;
+ const struct exynos_irq_chip *irq_chip;
unsigned int muxed_banks = 0;
unsigned int i;
int idx, irq;
@@ -531,12 +540,7 @@ int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
match = of_match_node(exynos_wkup_irq_ids, np);
if (match) {
- irq_chip = kmemdup(match->data,
- sizeof(*irq_chip), GFP_KERNEL);
- if (!irq_chip) {
- of_node_put(np);
- return -ENOMEM;
- }
+ irq_chip = match->data;
wkup_np = np;
break;
}
@@ -549,6 +553,14 @@ int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
if (bank->eint_type != EINT_TYPE_WKUP)
continue;
+ bank->irq_chip = devm_kmemdup(dev, irq_chip, sizeof(*irq_chip),
+ GFP_KERNEL);
+ if (!bank->irq_chip) {
+ of_node_put(wkup_np);
+ return -ENOMEM;
+ }
+ bank->irq_chip->chip.name = bank->name;
+
bank->irq_domain = irq_domain_add_linear(bank->of_node,
bank->nr_pins, &exynos_eint_irqd_ops, bank);
if (!bank->irq_domain) {
@@ -557,8 +569,6 @@ int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
return -ENXIO;
}
- bank->irq_chip = irq_chip;
-
if (!of_find_property(bank->of_node, "interrupts", NULL)) {
bank->eint_type = EINT_TYPE_WKUP_MUX;
++muxed_banks;
@@ -657,10 +667,6 @@ void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata)
irq_chip = bank->irq_chip;
irq_chip->set_eint_wakeup_mask(drvdata,
irq_chip);
- } else if (bank->irq_chip != irq_chip) {
- dev_warn(drvdata->dev,
- "More than one external wakeup interrupt chip configured (bank: %s). This is not supported by hardware nor by driver.\n",
- bank->name);
}
}
}
--
2.17.1
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