Merge tag 'ib-mfd-pwm-v4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into for-next
Immutable branch between MFD and PWM due for the v4.18 merge window (v2)
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 2bcffec..c4ba916 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -229,11 +229,13 @@
static const struct lpss_device_desc byt_pwm_dev_desc = {
.flags = LPSS_SAVE_CTX,
+ .prv_offset = 0x800,
.setup = byt_pwm_setup,
};
static const struct lpss_device_desc bsw_pwm_dev_desc = {
.flags = LPSS_SAVE_CTX | LPSS_NO_D3_DELAY,
+ .prv_offset = 0x800,
.setup = bsw_pwm_setup,
};
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index 4635cb3..a4d262d 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -401,7 +401,7 @@
config PWM_STM32
tristate "STMicroelectronics STM32 PWM"
- depends on MFD_STM32_TIMERS || COMPILE_TEST
+ depends on MFD_STM32_TIMERS
help
Generic PWM framework driver for STM32 SoCs.
diff --git a/drivers/pwm/pwm-atmel-tcb.c b/drivers/pwm/pwm-atmel-tcb.c
index 4fb1be2..0d0f837 100644
--- a/drivers/pwm/pwm-atmel-tcb.c
+++ b/drivers/pwm/pwm-atmel-tcb.c
@@ -460,8 +460,7 @@
#ifdef CONFIG_PM_SLEEP
static int atmel_tcb_pwm_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct atmel_tcb_pwm_chip *tcbpwm = platform_get_drvdata(pdev);
+ struct atmel_tcb_pwm_chip *tcbpwm = dev_get_drvdata(dev);
void __iomem *base = tcbpwm->tc->regs;
int i;
@@ -478,8 +477,7 @@
static int atmel_tcb_pwm_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct atmel_tcb_pwm_chip *tcbpwm = platform_get_drvdata(pdev);
+ struct atmel_tcb_pwm_chip *tcbpwm = dev_get_drvdata(dev);
void __iomem *base = tcbpwm->tc->regs;
int i;
diff --git a/drivers/pwm/pwm-lpss-platform.c b/drivers/pwm/pwm-lpss-platform.c
index 5d6ed150..5561b9e 100644
--- a/drivers/pwm/pwm-lpss-platform.c
+++ b/drivers/pwm/pwm-lpss-platform.c
@@ -74,6 +74,10 @@
return pwm_lpss_remove(lpwm);
}
+static SIMPLE_DEV_PM_OPS(pwm_lpss_platform_pm_ops,
+ pwm_lpss_suspend,
+ pwm_lpss_resume);
+
static const struct acpi_device_id pwm_lpss_acpi_match[] = {
{ "80860F09", (unsigned long)&pwm_lpss_byt_info },
{ "80862288", (unsigned long)&pwm_lpss_bsw_info },
@@ -86,6 +90,7 @@
.driver = {
.name = "pwm-lpss",
.acpi_match_table = pwm_lpss_acpi_match,
+ .pm = &pwm_lpss_platform_pm_ops,
},
.probe = pwm_lpss_probe_platform,
.remove = pwm_lpss_remove_platform,
diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c
index 8db0d40..4721a26 100644
--- a/drivers/pwm/pwm-lpss.c
+++ b/drivers/pwm/pwm-lpss.c
@@ -32,10 +32,13 @@
/* Size of each PWM register space if multiple */
#define PWM_SIZE 0x400
+#define MAX_PWMS 4
+
struct pwm_lpss_chip {
struct pwm_chip chip;
void __iomem *regs;
const struct pwm_lpss_boardinfo *info;
+ u32 saved_ctrl[MAX_PWMS];
};
static inline struct pwm_lpss_chip *to_lpwm(struct pwm_chip *chip)
@@ -177,6 +180,9 @@
unsigned long c;
int ret;
+ if (WARN_ON(info->npwm > MAX_PWMS))
+ return ERR_PTR(-ENODEV);
+
lpwm = devm_kzalloc(dev, sizeof(*lpwm), GFP_KERNEL);
if (!lpwm)
return ERR_PTR(-ENOMEM);
@@ -212,6 +218,30 @@
}
EXPORT_SYMBOL_GPL(pwm_lpss_remove);
+int pwm_lpss_suspend(struct device *dev)
+{
+ struct pwm_lpss_chip *lpwm = dev_get_drvdata(dev);
+ int i;
+
+ for (i = 0; i < lpwm->info->npwm; i++)
+ lpwm->saved_ctrl[i] = readl(lpwm->regs + i * PWM_SIZE + PWM);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(pwm_lpss_suspend);
+
+int pwm_lpss_resume(struct device *dev)
+{
+ struct pwm_lpss_chip *lpwm = dev_get_drvdata(dev);
+ int i;
+
+ for (i = 0; i < lpwm->info->npwm; i++)
+ writel(lpwm->saved_ctrl[i], lpwm->regs + i * PWM_SIZE + PWM);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(pwm_lpss_resume);
+
MODULE_DESCRIPTION("PWM driver for Intel LPSS");
MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/pwm/pwm-lpss.h b/drivers/pwm/pwm-lpss.h
index 98306bb..7a4238a 100644
--- a/drivers/pwm/pwm-lpss.h
+++ b/drivers/pwm/pwm-lpss.h
@@ -28,5 +28,7 @@
struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
const struct pwm_lpss_boardinfo *info);
int pwm_lpss_remove(struct pwm_lpss_chip *lpwm);
+int pwm_lpss_suspend(struct device *dev);
+int pwm_lpss_resume(struct device *dev);
#endif /* __PWM_LPSS_H */
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index 0767deb..822860b 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -541,8 +541,8 @@
meson->data = of_device_get_match_data(&pdev->dev);
meson->inverter_mask = BIT(meson->chip.npwm) - 1;
- channels = devm_kcalloc(&pdev->dev, meson->chip.npwm, sizeof(*meson),
- GFP_KERNEL);
+ channels = devm_kcalloc(&pdev->dev, meson->chip.npwm,
+ sizeof(*channels), GFP_KERNEL);
if (!channels)
return -ENOMEM;
diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c
index 91d11f2..748f614 100644
--- a/drivers/pwm/pwm-rcar.c
+++ b/drivers/pwm/pwm-rcar.c
@@ -261,8 +261,7 @@
#ifdef CONFIG_PM_SLEEP
static struct pwm_device *rcar_pwm_dev_to_pwm_dev(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct rcar_pwm_chip *rcar_pwm = platform_get_drvdata(pdev);
+ struct rcar_pwm_chip *rcar_pwm = dev_get_drvdata(dev);
struct pwm_chip *chip = &rcar_pwm->chip;
return &chip->pwms[0];