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authorMarek Szyprowski <m.szyprowski@samsung.com>2017-01-26 12:29:27 +0300
committerLinus Walleij <linus.walleij@linaro.org>2017-01-26 18:57:33 +0300
commit2b24efa8e5c5042b0f126c09622b3e9e3c86a4fa (patch)
treea681c773e6f92cc995d885c656a7e7f5a0e731c7 /drivers/pinctrl
parentdabd14569299c34f8c32b87760b464de6ed3f350 (diff)
downloadlinux-2b24efa8e5c5042b0f126c09622b3e9e3c86a4fa.tar.xz
pinctrl: samsung: Replace syscore ops with standard platform device pm_ops
Once the dependency on PMU driver (for pad retention control) has been removed, there is no reason to use syscore_ops based suspend/resume. This patch replaces it with standard platform device pm_ops based solution. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/samsung/pinctrl-samsung.c72
1 files changed, 14 insertions, 58 deletions
diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c
index 021abd7221f8..d79eadad6c5f 100644
--- a/drivers/pinctrl/samsung/pinctrl-samsung.c
+++ b/drivers/pinctrl/samsung/pinctrl-samsung.c
@@ -29,7 +29,6 @@
#include <linux/irqdomain.h>
#include <linux/of_device.h>
#include <linux/spinlock.h>
-#include <linux/syscore_ops.h>
#include "../core.h"
#include "pinctrl-samsung.h"
@@ -49,9 +48,6 @@ static struct pin_config {
{ "samsung,pin-val", PINCFG_TYPE_DAT },
};
-/* Global list of devices (struct samsung_pinctrl_drv_data) */
-static LIST_HEAD(drvdata_list);
-
static unsigned int pin_base;
static int samsung_get_group_count(struct pinctrl_dev *pctldev)
@@ -1084,22 +1080,18 @@ static int samsung_pinctrl_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, drvdata);
- /* Add to the global list */
- list_add_tail(&drvdata->node, &drvdata_list);
-
return 0;
}
#ifdef CONFIG_PM
-
/**
- * samsung_pinctrl_suspend_dev - save pinctrl state for suspend for a device
+ * samsung_pinctrl_suspend - save pinctrl state for suspend
*
* Save data for all banks handled by this device.
*/
-static void samsung_pinctrl_suspend_dev(
- struct samsung_pinctrl_drv_data *drvdata)
+static int samsung_pinctrl_suspend(struct device *dev)
{
+ struct samsung_pinctrl_drv_data *drvdata = dev_get_drvdata(dev);
int i;
for (i = 0; i < drvdata->nr_banks; i++) {
@@ -1135,18 +1127,21 @@ static void samsung_pinctrl_suspend_dev(
drvdata->suspend(drvdata);
if (drvdata->retention_ctrl && drvdata->retention_ctrl->enable)
drvdata->retention_ctrl->enable(drvdata);
+
+ return 0;
}
/**
- * samsung_pinctrl_resume_dev - restore pinctrl state from suspend for a device
+ * samsung_pinctrl_resume - restore pinctrl state from suspend
*
* Restore one of the banks that was saved during suspend.
*
* We don't bother doing anything complicated to avoid glitching lines since
* we're called before pad retention is turned off.
*/
-static void samsung_pinctrl_resume_dev(struct samsung_pinctrl_drv_data *drvdata)
+static int samsung_pinctrl_resume(struct device *dev)
{
+ struct samsung_pinctrl_drv_data *drvdata = dev_get_drvdata(dev);
int i;
if (drvdata->resume)
@@ -1185,48 +1180,11 @@ static void samsung_pinctrl_resume_dev(struct samsung_pinctrl_drv_data *drvdata)
if (drvdata->retention_ctrl && drvdata->retention_ctrl->disable)
drvdata->retention_ctrl->disable(drvdata);
-}
-
-/**
- * samsung_pinctrl_suspend - save pinctrl state for suspend
- *
- * Save data for all banks across all devices.
- */
-static int samsung_pinctrl_suspend(void)
-{
- struct samsung_pinctrl_drv_data *drvdata;
-
- list_for_each_entry(drvdata, &drvdata_list, node) {
- samsung_pinctrl_suspend_dev(drvdata);
- }
return 0;
}
-
-/**
- * samsung_pinctrl_resume - restore pinctrl state for suspend
- *
- * Restore data for all banks across all devices.
- */
-static void samsung_pinctrl_resume(void)
-{
- struct samsung_pinctrl_drv_data *drvdata;
-
- list_for_each_entry_reverse(drvdata, &drvdata_list, node) {
- samsung_pinctrl_resume_dev(drvdata);
- }
-}
-
-#else
-#define samsung_pinctrl_suspend NULL
-#define samsung_pinctrl_resume NULL
#endif
-static struct syscore_ops samsung_pinctrl_syscore_ops = {
- .suspend = samsung_pinctrl_suspend,
- .resume = samsung_pinctrl_resume,
-};
-
static const struct of_device_id samsung_pinctrl_dt_match[] = {
#ifdef CONFIG_PINCTRL_EXYNOS
{ .compatible = "samsung,exynos3250-pinctrl",
@@ -1268,25 +1226,23 @@ static const struct of_device_id samsung_pinctrl_dt_match[] = {
};
MODULE_DEVICE_TABLE(of, samsung_pinctrl_dt_match);
+static const struct dev_pm_ops samsung_pinctrl_pm_ops = {
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(samsung_pinctrl_suspend,
+ samsung_pinctrl_resume)
+};
+
static struct platform_driver samsung_pinctrl_driver = {
.probe = samsung_pinctrl_probe,
.driver = {
.name = "samsung-pinctrl",
.of_match_table = samsung_pinctrl_dt_match,
.suppress_bind_attrs = true,
+ .pm = &samsung_pinctrl_pm_ops,
},
};
static int __init samsung_pinctrl_drv_register(void)
{
- /*
- * Register syscore ops for save/restore of registers across suspend.
- * It's important to ensure that this driver is running at an earlier
- * initcall level than any arch-specific init calls that install syscore
- * ops that turn off pad retention (like exynos_pm_resume).
- */
- register_syscore_ops(&samsung_pinctrl_syscore_ops);
-
return platform_driver_register(&samsung_pinctrl_driver);
}
postcore_initcall(samsung_pinctrl_drv_register);