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Message-ID: <20240902141607.2694988-1-andriy.shevchenko@linux.intel.com>
Date: Mon, 2 Sep 2024 17:15:11 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
linux-gpio@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>,
Andy Shevchenko <andy@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH v1 1/1] pinctrl: intel: Constify struct intel_pinctrl parameter
There are a few functions that do not and should not change
the state of the pin control object. Constify the respective
parameter.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
There are more opportunities, but they will make the code inconsistent,
for example, .get uses const, while .set may not due to locking.
drivers/pinctrl/intel/pinctrl-intel.c | 33 ++++++++++++++-------------
drivers/pinctrl/intel/pinctrl-intel.h | 3 ++-
2 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index a2194d2ab178..7a790c437f68 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -132,7 +132,8 @@ struct intel_community_context {
for_each_intel_pad_group(pctrl, community, grp) \
if (grp->gpio_base == INTEL_GPIO_BASE_NOMAP) {} else
-const struct intel_community *intel_get_community(struct intel_pinctrl *pctrl, unsigned int pin)
+const struct intel_community *intel_get_community(const struct intel_pinctrl *pctrl,
+ unsigned int pin)
{
const struct intel_community *community;
@@ -161,7 +162,7 @@ intel_community_get_padgroup(const struct intel_community *community,
return NULL;
}
-static void __iomem *intel_get_padcfg(struct intel_pinctrl *pctrl,
+static void __iomem *intel_get_padcfg(const struct intel_pinctrl *pctrl,
unsigned int pin, unsigned int reg)
{
const struct intel_community *community;
@@ -181,7 +182,7 @@ static void __iomem *intel_get_padcfg(struct intel_pinctrl *pctrl,
return community->pad_regs + reg + padno * nregs * 4;
}
-static bool intel_pad_owned_by_host(struct intel_pinctrl *pctrl, unsigned int pin)
+static bool intel_pad_owned_by_host(const struct intel_pinctrl *pctrl, unsigned int pin)
{
const struct intel_community *community;
const struct intel_padgroup *padgrp;
@@ -206,7 +207,7 @@ static bool intel_pad_owned_by_host(struct intel_pinctrl *pctrl, unsigned int pi
return !(readl(padown) & PADOWN_MASK(gpp_offset));
}
-static bool intel_pad_acpi_mode(struct intel_pinctrl *pctrl, unsigned int pin)
+static bool intel_pad_acpi_mode(const struct intel_pinctrl *pctrl, unsigned int pin)
{
const struct intel_community *community;
const struct intel_padgroup *padgrp;
@@ -248,7 +249,7 @@ enum {
PAD_LOCKED_FULL = PAD_LOCKED | PAD_LOCKED_TX,
};
-static int intel_pad_locked(struct intel_pinctrl *pctrl, unsigned int pin)
+static int intel_pad_locked(const struct intel_pinctrl *pctrl, unsigned int pin)
{
const struct intel_community *community;
const struct intel_padgroup *padgrp;
@@ -286,19 +287,19 @@ static int intel_pad_locked(struct intel_pinctrl *pctrl, unsigned int pin)
return ret;
}
-static bool intel_pad_is_unlocked(struct intel_pinctrl *pctrl, unsigned int pin)
+static bool intel_pad_is_unlocked(const struct intel_pinctrl *pctrl, unsigned int pin)
{
return (intel_pad_locked(pctrl, pin) & PAD_LOCKED) == PAD_UNLOCKED;
}
-static bool intel_pad_usable(struct intel_pinctrl *pctrl, unsigned int pin)
+static bool intel_pad_usable(const struct intel_pinctrl *pctrl, unsigned int pin)
{
return intel_pad_owned_by_host(pctrl, pin) && intel_pad_is_unlocked(pctrl, pin);
}
int intel_get_groups_count(struct pinctrl_dev *pctldev)
{
- struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
return pctrl->soc->ngroups;
}
@@ -306,7 +307,7 @@ EXPORT_SYMBOL_NS_GPL(intel_get_groups_count, PINCTRL_INTEL);
const char *intel_get_group_name(struct pinctrl_dev *pctldev, unsigned int group)
{
- struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
return pctrl->soc->groups[group].grp.name;
}
@@ -315,7 +316,7 @@ EXPORT_SYMBOL_NS_GPL(intel_get_group_name, PINCTRL_INTEL);
int intel_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group,
const unsigned int **pins, unsigned int *npins)
{
- struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
*pins = pctrl->soc->groups[group].grp.pins;
*npins = pctrl->soc->groups[group].grp.npins;
@@ -326,7 +327,7 @@ EXPORT_SYMBOL_NS_GPL(intel_get_group_pins, PINCTRL_INTEL);
static void intel_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
unsigned int pin)
{
- struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
void __iomem *padcfg;
u32 cfg0, cfg1, mode;
int locked;
@@ -383,7 +384,7 @@ static const struct pinctrl_ops intel_pinctrl_ops = {
int intel_get_functions_count(struct pinctrl_dev *pctldev)
{
- struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
return pctrl->soc->nfunctions;
}
@@ -391,7 +392,7 @@ EXPORT_SYMBOL_NS_GPL(intel_get_functions_count, PINCTRL_INTEL);
const char *intel_get_function_name(struct pinctrl_dev *pctldev, unsigned int function)
{
- struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
return pctrl->soc->functions[function].func.name;
}
@@ -400,7 +401,7 @@ EXPORT_SYMBOL_NS_GPL(intel_get_function_name, PINCTRL_INTEL);
int intel_get_function_groups(struct pinctrl_dev *pctldev, unsigned int function,
const char * const **groups, unsigned int * const ngroups)
{
- struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+ const struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
*groups = pctrl->soc->functions[function].func.groups;
*ngroups = pctrl->soc->functions[function].func.ngroups;
@@ -952,7 +953,7 @@ static const struct pinctrl_desc intel_pinctrl_desc = {
* Return: a pin number and pointers to the community and pad group, which
* the pin belongs to, or negative error code if translation can't be done.
*/
-static int intel_gpio_to_pin(struct intel_pinctrl *pctrl, unsigned int offset,
+static int intel_gpio_to_pin(const struct intel_pinctrl *pctrl, unsigned int offset,
const struct intel_community **community,
const struct intel_padgroup **padgrp)
{
@@ -982,7 +983,7 @@ static int intel_gpio_to_pin(struct intel_pinctrl *pctrl, unsigned int offset,
*
* Return: a GPIO offset, or negative error code if translation can't be done.
*/
-static int intel_pin_to_gpio(struct intel_pinctrl *pctrl, int pin)
+static int intel_pin_to_gpio(const struct intel_pinctrl *pctrl, int pin)
{
const struct intel_community *community;
const struct intel_padgroup *padgrp;
diff --git a/drivers/pinctrl/intel/pinctrl-intel.h b/drivers/pinctrl/intel/pinctrl-intel.h
index c7b025ea989a..4d4e1257afdf 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.h
+++ b/drivers/pinctrl/intel/pinctrl-intel.h
@@ -264,7 +264,8 @@ int intel_pinctrl_probe_by_uid(struct platform_device *pdev);
extern const struct dev_pm_ops intel_pinctrl_pm_ops;
-const struct intel_community *intel_get_community(struct intel_pinctrl *pctrl, unsigned int pin);
+const struct intel_community *intel_get_community(const struct intel_pinctrl *pctrl,
+ unsigned int pin);
int intel_get_groups_count(struct pinctrl_dev *pctldev);
const char *intel_get_group_name(struct pinctrl_dev *pctldev, unsigned int group);
--
2.43.0.rc1.1336.g36b5255a03ac
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