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Message-Id: <20250312-pinctrl-fltcon-suspend-v5-2-d98d5b271242@linaro.org>
Date: Wed, 12 Mar 2025 21:58:59 +0000
From: Peter Griffin <peter.griffin@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Alim Akhtar <alim.akhtar@...sung.com>,
Linus Walleij <linus.walleij@...aro.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
andre.draszik@...aro.org, tudor.ambarus@...aro.org, willmcvicker@...gle.com,
semen.protsenko@...aro.org, kernel-team@...roid.com,
jaewon02.kim@...sung.com, Peter Griffin <peter.griffin@...aro.org>
Subject: [PATCH v5 2/5] pinctrl: samsung: refactor drvdata suspend & resume
callbacks
Move the call of drvdata->suspend()/resume into the loop which is
iterating drvdata for each bank.
This allows the clk_enable() and clk_disable() logic to be removed
from each callback, and also avoids iterating the same loop again
in the next function.
Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
---
drivers/pinctrl/samsung/pinctrl-exynos.c | 89 ++++++++-----------------------
drivers/pinctrl/samsung/pinctrl-exynos.h | 4 +-
drivers/pinctrl/samsung/pinctrl-samsung.c | 11 ++--
drivers/pinctrl/samsung/pinctrl-samsung.h | 8 +--
4 files changed, 33 insertions(+), 79 deletions(-)
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c
index ac6dc22b37c98ed5b7fca3335764f19abb2f71cc..62c8d8d907545119c49a89d79b5dae63282467d5 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos.c
+++ b/drivers/pinctrl/samsung/pinctrl-exynos.c
@@ -761,19 +761,11 @@ __init int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
return 0;
}
-static void exynos_pinctrl_suspend_bank(
- struct samsung_pinctrl_drv_data *drvdata,
- struct samsung_pin_bank *bank)
+static void exynos_pinctrl_suspend_bank(struct samsung_pin_bank *bank)
{
struct exynos_eint_gpio_save *save = bank->soc_priv;
const void __iomem *regs = bank->eint_base;
- if (clk_enable(bank->drvdata->pclk)) {
- dev_err(bank->gpio_chip.parent,
- "unable to enable clock for saving state\n");
- return;
- }
-
save->eint_con = readl(regs + EXYNOS_GPIO_ECON_OFFSET
+ bank->eint_offset);
save->eint_fltcon0 = readl(regs + EXYNOS_GPIO_EFLTCON_OFFSET
@@ -783,71 +775,46 @@ static void exynos_pinctrl_suspend_bank(
save->eint_mask = readl(regs + bank->irq_chip->eint_mask
+ bank->eint_offset);
- clk_disable(bank->drvdata->pclk);
-
pr_debug("%s: save con %#010x\n", bank->name, save->eint_con);
pr_debug("%s: save fltcon0 %#010x\n", bank->name, save->eint_fltcon0);
pr_debug("%s: save fltcon1 %#010x\n", bank->name, save->eint_fltcon1);
pr_debug("%s: save mask %#010x\n", bank->name, save->eint_mask);
}
-static void exynosauto_pinctrl_suspend_bank(struct samsung_pinctrl_drv_data *drvdata,
- struct samsung_pin_bank *bank)
+static void exynosauto_pinctrl_suspend_bank(struct samsung_pin_bank *bank)
{
struct exynos_eint_gpio_save *save = bank->soc_priv;
const void __iomem *regs = bank->eint_base;
- if (clk_enable(bank->drvdata->pclk)) {
- dev_err(bank->gpio_chip.parent,
- "unable to enable clock for saving state\n");
- return;
- }
-
save->eint_con = readl(regs + bank->pctl_offset + bank->eint_con_offset);
save->eint_mask = readl(regs + bank->pctl_offset + bank->eint_mask_offset);
- clk_disable(bank->drvdata->pclk);
-
pr_debug("%s: save con %#010x\n", bank->name, save->eint_con);
pr_debug("%s: save mask %#010x\n", bank->name, save->eint_mask);
}
-void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata)
+void exynos_pinctrl_suspend(struct samsung_pin_bank *bank)
{
- struct samsung_pin_bank *bank = drvdata->pin_banks;
struct exynos_irq_chip *irq_chip = NULL;
- int i;
- for (i = 0; i < drvdata->nr_banks; ++i, ++bank) {
- if (bank->eint_type == EINT_TYPE_GPIO) {
- if (bank->eint_con_offset)
- exynosauto_pinctrl_suspend_bank(drvdata, bank);
- else
- exynos_pinctrl_suspend_bank(drvdata, bank);
- }
- else if (bank->eint_type == EINT_TYPE_WKUP) {
- if (!irq_chip) {
- irq_chip = bank->irq_chip;
- irq_chip->set_eint_wakeup_mask(drvdata,
- irq_chip);
- }
+ if (bank->eint_type == EINT_TYPE_GPIO) {
+ if (bank->eint_con_offset)
+ exynosauto_pinctrl_suspend_bank(bank);
+ else
+ exynos_pinctrl_suspend_bank(bank);
+ } else if (bank->eint_type == EINT_TYPE_WKUP) {
+ if (!irq_chip) {
+ irq_chip = bank->irq_chip;
+ irq_chip->set_eint_wakeup_mask(bank->drvdata, irq_chip);
}
}
}
-static void exynos_pinctrl_resume_bank(
- struct samsung_pinctrl_drv_data *drvdata,
- struct samsung_pin_bank *bank)
+static void exynos_pinctrl_resume_bank(struct samsung_pin_bank *bank)
{
struct exynos_eint_gpio_save *save = bank->soc_priv;
void __iomem *regs = bank->eint_base;
- if (clk_enable(bank->drvdata->pclk)) {
- dev_err(bank->gpio_chip.parent,
- "unable to enable clock for restoring state\n");
- return;
- }
-
pr_debug("%s: con %#010x => %#010x\n", bank->name,
readl(regs + EXYNOS_GPIO_ECON_OFFSET
+ bank->eint_offset), save->eint_con);
@@ -869,22 +836,13 @@ static void exynos_pinctrl_resume_bank(
+ 2 * bank->eint_offset + 4);
writel(save->eint_mask, regs + bank->irq_chip->eint_mask
+ bank->eint_offset);
-
- clk_disable(bank->drvdata->pclk);
}
-static void exynosauto_pinctrl_resume_bank(struct samsung_pinctrl_drv_data *drvdata,
- struct samsung_pin_bank *bank)
+static void exynosauto_pinctrl_resume_bank(struct samsung_pin_bank *bank)
{
struct exynos_eint_gpio_save *save = bank->soc_priv;
void __iomem *regs = bank->eint_base;
- if (clk_enable(bank->drvdata->pclk)) {
- dev_err(bank->gpio_chip.parent,
- "unable to enable clock for restoring state\n");
- return;
- }
-
pr_debug("%s: con %#010x => %#010x\n", bank->name,
readl(regs + bank->pctl_offset + bank->eint_con_offset), save->eint_con);
pr_debug("%s: mask %#010x => %#010x\n", bank->name,
@@ -893,21 +851,16 @@ static void exynosauto_pinctrl_resume_bank(struct samsung_pinctrl_drv_data *drvd
writel(save->eint_con, regs + bank->pctl_offset + bank->eint_con_offset);
writel(save->eint_mask, regs + bank->pctl_offset + bank->eint_mask_offset);
- clk_disable(bank->drvdata->pclk);
}
-void exynos_pinctrl_resume(struct samsung_pinctrl_drv_data *drvdata)
+void exynos_pinctrl_resume(struct samsung_pin_bank *bank)
{
- struct samsung_pin_bank *bank = drvdata->pin_banks;
- int i;
-
- for (i = 0; i < drvdata->nr_banks; ++i, ++bank)
- if (bank->eint_type == EINT_TYPE_GPIO) {
- if (bank->eint_con_offset)
- exynosauto_pinctrl_resume_bank(drvdata, bank);
- else
- exynos_pinctrl_resume_bank(drvdata, bank);
- }
+ if (bank->eint_type == EINT_TYPE_GPIO) {
+ if (bank->eint_con_offset)
+ exynosauto_pinctrl_resume_bank(bank);
+ else
+ exynos_pinctrl_resume_bank(bank);
+ }
}
static void exynos_retention_enable(struct samsung_pinctrl_drv_data *drvdata)
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h
index 33df21d5c9d61e852834031570d4a0ac0e51f6a4..69be0746e29d9714a33f4aa49df0e8d7257b4220 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos.h
+++ b/drivers/pinctrl/samsung/pinctrl-exynos.h
@@ -221,8 +221,8 @@ struct exynos_muxed_weint_data {
int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d);
int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d);
-void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata);
-void exynos_pinctrl_resume(struct samsung_pinctrl_drv_data *drvdata);
+void exynos_pinctrl_suspend(struct samsung_pin_bank *bank);
+void exynos_pinctrl_resume(struct samsung_pin_bank *bank);
struct samsung_retention_ctrl *
exynos_retention_init(struct samsung_pinctrl_drv_data *drvdata,
const struct samsung_retention_data *data);
diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c
index 963060920301ec90affb2ee6d758d3d602ffb4a9..375634d8cc79d6533603e3eed562452181e2ee25 100644
--- a/drivers/pinctrl/samsung/pinctrl-samsung.c
+++ b/drivers/pinctrl/samsung/pinctrl-samsung.c
@@ -1349,6 +1349,9 @@ static int __maybe_unused samsung_pinctrl_suspend(struct device *dev)
const u8 *widths = bank->type->fld_width;
enum pincfg_type type;
+ if (drvdata->suspend)
+ drvdata->suspend(bank);
+
/* Registers without a powerdown config aren't lost */
if (!widths[PINCFG_TYPE_CON_PDN])
continue;
@@ -1373,8 +1376,6 @@ static int __maybe_unused samsung_pinctrl_suspend(struct device *dev)
clk_disable(drvdata->pclk);
- if (drvdata->suspend)
- drvdata->suspend(drvdata);
if (drvdata->retention_ctrl && drvdata->retention_ctrl->enable)
drvdata->retention_ctrl->enable(drvdata);
@@ -1406,9 +1407,6 @@ static int __maybe_unused samsung_pinctrl_resume(struct device *dev)
return ret;
}
- if (drvdata->resume)
- drvdata->resume(drvdata);
-
for (i = 0; i < drvdata->nr_banks; i++) {
struct samsung_pin_bank *bank = &drvdata->pin_banks[i];
void __iomem *reg = bank->pctl_base + bank->pctl_offset;
@@ -1416,6 +1414,9 @@ static int __maybe_unused samsung_pinctrl_resume(struct device *dev)
const u8 *widths = bank->type->fld_width;
enum pincfg_type type;
+ if (drvdata->resume)
+ drvdata->resume(bank);
+
/* Registers without a powerdown config aren't lost */
if (!widths[PINCFG_TYPE_CON_PDN])
continue;
diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.h b/drivers/pinctrl/samsung/pinctrl-samsung.h
index 371e4f02bbfb375964b7833beb9bbc098a51f4a3..e939e5bb0347458ae4a9014fd9657fc59c5c3994 100644
--- a/drivers/pinctrl/samsung/pinctrl-samsung.h
+++ b/drivers/pinctrl/samsung/pinctrl-samsung.h
@@ -285,8 +285,8 @@ struct samsung_pin_ctrl {
int (*eint_gpio_init)(struct samsung_pinctrl_drv_data *);
int (*eint_wkup_init)(struct samsung_pinctrl_drv_data *);
void (*pud_value_init)(struct samsung_pinctrl_drv_data *drvdata);
- void (*suspend)(struct samsung_pinctrl_drv_data *);
- void (*resume)(struct samsung_pinctrl_drv_data *);
+ void (*suspend)(struct samsung_pin_bank *bank);
+ void (*resume)(struct samsung_pin_bank *bank);
};
/**
@@ -335,8 +335,8 @@ struct samsung_pinctrl_drv_data {
struct samsung_retention_ctrl *retention_ctrl;
- void (*suspend)(struct samsung_pinctrl_drv_data *);
- void (*resume)(struct samsung_pinctrl_drv_data *);
+ void (*suspend)(struct samsung_pin_bank *bank);
+ void (*resume)(struct samsung_pin_bank *bank);
};
/**
--
2.49.0.rc1.451.g8f38331e32-goog
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