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Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/pwm-lpss.c32
1 files changed, 10 insertions, 22 deletions
diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c
index 44ce6c6103ae..4df994f72d96 100644
--- a/drivers/pwm/pwm-lpss.c
+++ b/drivers/pwm/pwm-lpss.c
@@ -14,7 +14,6 @@
*/
#include <linux/acpi.h>
-#include <linux/clk.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -37,7 +36,6 @@ static int pci_drv, plat_drv; /* So we know which drivers registered */
struct pwm_lpss_chip {
struct pwm_chip chip;
void __iomem *regs;
- struct clk *clk;
unsigned long clk_rate;
};
@@ -97,11 +95,6 @@ static int pwm_lpss_enable(struct pwm_chip *chip, struct pwm_device *pwm)
{
struct pwm_lpss_chip *lpwm = to_lpwm(chip);
u32 ctrl;
- int ret;
-
- ret = clk_prepare_enable(lpwm->clk);
- if (ret)
- return ret;
ctrl = readl(lpwm->regs + PWM);
writel(ctrl | PWM_ENABLE, lpwm->regs + PWM);
@@ -116,8 +109,6 @@ static void pwm_lpss_disable(struct pwm_chip *chip, struct pwm_device *pwm)
ctrl = readl(lpwm->regs + PWM);
writel(ctrl & ~PWM_ENABLE, lpwm->regs + PWM);
-
- clk_disable_unprepare(lpwm->clk);
}
static const struct pwm_ops pwm_lpss_ops = {
@@ -142,17 +133,7 @@ static struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev,
if (IS_ERR(lpwm->regs))
return ERR_CAST(lpwm->regs);
- if (info) {
- lpwm->clk_rate = info->clk_rate;
- } else {
- lpwm->clk = devm_clk_get(dev, NULL);
- if (IS_ERR(lpwm->clk)) {
- dev_err(dev, "failed to get PWM clock\n");
- return ERR_CAST(lpwm->clk);
- }
- lpwm->clk_rate = clk_get_rate(lpwm->clk);
- }
-
+ lpwm->clk_rate = info->clk_rate;
lpwm->chip.dev = dev;
lpwm->chip.ops = &pwm_lpss_ops;
lpwm->chip.base = -1;
@@ -221,12 +202,19 @@ static struct pci_driver pwm_lpss_driver_pci = {
static int pwm_lpss_probe_platform(struct platform_device *pdev)
{
+ const struct pwm_lpss_boardinfo *info;
+ const struct acpi_device_id *id;
struct pwm_lpss_chip *lpwm;
struct resource *r;
+ id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
+ if (!id)
+ return -ENODEV;
+
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- lpwm = pwm_lpss_probe(&pdev->dev, r, NULL);
+ info = (struct pwm_lpss_boardinfo *)id->driver_data;
+ lpwm = pwm_lpss_probe(&pdev->dev, r, info);
if (IS_ERR(lpwm))
return PTR_ERR(lpwm);
@@ -242,7 +230,7 @@ static int pwm_lpss_remove_platform(struct platform_device *pdev)
}
static const struct acpi_device_id pwm_lpss_acpi_match[] = {
- { "80860F09", 0 },
+ { "80860F09", (unsigned long)&byt_info },
{ },
};
MODULE_DEVICE_TABLE(acpi, pwm_lpss_acpi_match);