[PATCH 4.19 243/267] pinctrl: samsung: Correct setting of eint wakeup mask on s5pv210

Greg Kroah-Hartman
2020-06-19T16:15:26Z

From: Jonathan Bakker <xc-racer2@live.ca>

commit b577a279914085c6b657c33e9f39ef56d96a3302 upstream.

Commit a8be2af0218c ("pinctrl: samsung: Write external wakeup interrupt
mask") started writing the eint wakeup mask from the pinctrl driver.
Unfortunately, it made the assumption that the private retention data
was always a regmap while in the case of s5pv210 it is a raw pointer
to the clock base (as the eint wakeup mask not in the PMU as with newer
Exynos platforms).

Fixes: a8be2af0218c ("pinctrl: samsung: Write external wakeup interrupt mask")
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/pinctrl/samsung/pinctrl-exynos.c | 73 ++++++++++++++++++++-----------
1 file changed, 49 insertions(+), 24 deletions(-)

--- a/drivers/pinctrl/samsung/pinctrl-exynos.c
+++ b/drivers/pinctrl/samsung/pinctrl-exynos.c
@@ -40,6 +40,8 @@ struct exynos_irq_chip {
u32 eint_pend;
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);
};

static inline struct exynos_irq_chip *to_exynos_irq_chip(struct irq_chip *chip)
@@ -350,6 +352,47 @@ static int exynos_wkup_irq_set_wake(stru
return 0;
}

+static void
+exynos_pinctrl_set_eint_wakeup_mask(struct samsung_pinctrl_drv_data *drvdata,
+ struct exynos_irq_chip *irq_chip)
+{
+ struct regmap *pmu_regs;
+
+ if (!drvdata->retention_ctrl || !drvdata->retention_ctrl->priv) {
+ dev_warn(drvdata->dev,
+ "No retention data configured bank with external wakeup interrupt. Wake-up mask will not be set.\n");
+ return;
+ }
+
+ pmu_regs = drvdata->retention_ctrl->priv;
+ dev_info(drvdata->dev,
+ "Setting external wakeup interrupt mask: 0x%x\n",
+ irq_chip->eint_wake_mask_value);
+
+ regmap_write(pmu_regs, irq_chip->eint_wake_mask_reg,
+ irq_chip->eint_wake_mask_value);
+}
+
+static void
+s5pv210_pinctrl_set_eint_wakeup_mask(struct samsung_pinctrl_drv_data *drvdata,
+ struct exynos_irq_chip *irq_chip)
+
+{
+ void __iomem *clk_base;
+
+ if (!drvdata->retention_ctrl || !drvdata->retention_ctrl->priv) {
+ dev_warn(drvdata->dev,
+ "No retention data configured bank with external wakeup interrupt. Wake-up mask will not be set.\n");
+ return;
+ }
+
+
+ clk_base = (void __iomem *) drvdata->retention_ctrl->priv;
+
+ __raw_writel(irq_chip->eint_wake_mask_value,
+ clk_base + irq_chip->eint_wake_mask_reg);
+}
+
/*
* irq_chip for wakeup interrupts
*/
@@ -368,8 +411,9 @@ static const struct exynos_irq_chip s5pv
.eint_mask = EXYNOS_WKUP_EMASK_OFFSET,
.eint_pend = EXYNOS_WKUP_EPEND_OFFSET,
.eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED,
- /* Only difference with exynos4210_wkup_irq_chip: */
+ /* 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,
};

static const struct exynos_irq_chip exynos4210_wkup_irq_chip __initconst = {
@@ -388,6 +432,7 @@ static const struct exynos_irq_chip exyn
.eint_pend = EXYNOS_WKUP_EPEND_OFFSET,
.eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED,
.eint_wake_mask_reg = EXYNOS_EINT_WAKEUP_MASK,
+ .set_eint_wakeup_mask = exynos_pinctrl_set_eint_wakeup_mask,
};

static const struct exynos_irq_chip exynos7_wkup_irq_chip __initconst = {
@@ -406,6 +451,7 @@ static const struct exynos_irq_chip exyn
.eint_pend = EXYNOS7_WKUP_EPEND_OFFSET,
.eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED,
.eint_wake_mask_reg = EXYNOS5433_EINT_WAKEUP_MASK,
+ .set_eint_wakeup_mask = exynos_pinctrl_set_eint_wakeup_mask,
};

/* list of external wakeup controllers supported */
@@ -582,27 +628,6 @@ int exynos_eint_wkup_init(struct samsung
return 0;
}

-static void
-exynos_pinctrl_set_eint_wakeup_mask(struct samsung_pinctrl_drv_data *drvdata,
- struct exynos_irq_chip *irq_chip)
-{
- struct regmap *pmu_regs;
-
- if (!drvdata->retention_ctrl || !drvdata->retention_ctrl->priv) {
- dev_warn(drvdata->dev,
- "No retention data configured bank with external wakeup interrupt. Wake-up mask will not be set.\n");
- return;
- }
-
- pmu_regs = drvdata->retention_ctrl->priv;
- dev_info(drvdata->dev,
- "Setting external wakeup interrupt mask: 0x%x\n",
- irq_chip->eint_wake_mask_value);
-
- regmap_write(pmu_regs, irq_chip->eint_wake_mask_reg,
- irq_chip->eint_wake_mask_value);
-}
-
static void exynos_pinctrl_suspend_bank(
struct samsung_pinctrl_drv_data *drvdata,
struct samsung_pin_bank *bank)
@@ -634,8 +659,8 @@ void exynos_pinctrl_suspend(struct samsu
else if (bank->eint_type == EINT_TYPE_WKUP) {
if (!irq_chip) {
irq_chip = bank->irq_chip;
- exynos_pinctrl_set_eint_wakeup_mask(drvdata,
- 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",