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path: root/drivers/pwm/pwm-tiecap.c
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Diffstat (limited to 'drivers/pwm/pwm-tiecap.c')
-rw-r--r--drivers/pwm/pwm-tiecap.c37
1 files changed, 9 insertions, 28 deletions
diff --git a/drivers/pwm/pwm-tiecap.c b/drivers/pwm/pwm-tiecap.c
index 616af764a276..6ec342dd3eea 100644
--- a/drivers/pwm/pwm-tiecap.c
+++ b/drivers/pwm/pwm-tiecap.c
@@ -27,8 +27,6 @@
#include <linux/pwm.h>
#include <linux/of_device.h>
-#include "pwm-tipwmss.h"
-
/* ECAP registers and bits definitions */
#define CAP1 0x08
#define CAP2 0x0C
@@ -195,6 +193,7 @@ static const struct pwm_ops ecap_pwm_ops = {
};
static const struct of_device_id ecap_of_match[] = {
+ { .compatible = "ti,am3352-ecap" },
{ .compatible = "ti,am33xx-ecap" },
{},
};
@@ -202,11 +201,11 @@ MODULE_DEVICE_TABLE(of, ecap_of_match);
static int ecap_pwm_probe(struct platform_device *pdev)
{
+ struct device_node *np = pdev->dev.of_node;
int ret;
struct resource *r;
struct clk *clk;
struct ecap_pwm_chip *pc;
- u16 status;
pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
if (!pc)
@@ -214,6 +213,13 @@ static int ecap_pwm_probe(struct platform_device *pdev)
clk = devm_clk_get(&pdev->dev, "fck");
if (IS_ERR(clk)) {
+ if (of_device_is_compatible(np, "ti,am33xx-ecap")) {
+ dev_warn(&pdev->dev, "Binding is obsolete.\n");
+ clk = devm_clk_get(pdev->dev.parent, "fck");
+ }
+ }
+
+ if (IS_ERR(clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
return PTR_ERR(clk);
}
@@ -243,40 +249,15 @@ static int ecap_pwm_probe(struct platform_device *pdev)
}
pm_runtime_enable(&pdev->dev);
- pm_runtime_get_sync(&pdev->dev);
-
- status = pwmss_submodule_state_change(pdev->dev.parent,
- PWMSS_ECAPCLK_EN);
- if (!(status & PWMSS_ECAPCLK_EN_ACK)) {
- dev_err(&pdev->dev, "PWMSS config space clock enable failed\n");
- ret = -EINVAL;
- goto pwmss_clk_failure;
- }
-
- pm_runtime_put_sync(&pdev->dev);
platform_set_drvdata(pdev, pc);
return 0;
-
-pwmss_clk_failure:
- pm_runtime_put_sync(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
- pwmchip_remove(&pc->chip);
- return ret;
}
static int ecap_pwm_remove(struct platform_device *pdev)
{
struct ecap_pwm_chip *pc = platform_get_drvdata(pdev);
- pm_runtime_get_sync(&pdev->dev);
- /*
- * Due to hardware misbehaviour, acknowledge of the stop_req
- * is missing. Hence checking of the status bit skipped.
- */
- pwmss_submodule_state_change(pdev->dev.parent, PWMSS_ECAPCLK_STOP_REQ);
- pm_runtime_put_sync(&pdev->dev);
-
pm_runtime_disable(&pdev->dev);
return pwmchip_remove(&pc->chip);
}