summaryrefslogtreecommitdiff
path: root/drivers/pwm/pwm-omap-dmtimer.c
diff options
context:
space:
mode:
authorKeerthy <j-keerthy@ti.com>2018-02-15 09:01:50 +0300
committerTony Lindgren <tony@atomide.com>2018-02-22 21:54:24 +0300
commitb7290cf6ff7869ec12070aa146c370728cab62c2 (patch)
treed615023776770c887afa96b5a77e61e35b11becc /drivers/pwm/pwm-omap-dmtimer.c
parent1a3acad26613fff7c7590ab32ff21f8c2a10fba9 (diff)
downloadlinux-b7290cf6ff7869ec12070aa146c370728cab62c2.tar.xz
pwm: pwm-omap-dmtimer: Adapt driver to utilize dmtimer pdata ops
Adapt driver to utilize dmtimer pdata ops instead of pdata-quirks. Signed-off-by: Keerthy <j-keerthy@ti.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/pwm/pwm-omap-dmtimer.c')
-rw-r--r--drivers/pwm/pwm-omap-dmtimer.c68
1 files changed, 42 insertions, 26 deletions
diff --git a/drivers/pwm/pwm-omap-dmtimer.c b/drivers/pwm/pwm-omap-dmtimer.c
index 5ad42f33e70c..665da3c8fbce 100644
--- a/drivers/pwm/pwm-omap-dmtimer.c
+++ b/drivers/pwm/pwm-omap-dmtimer.c
@@ -23,6 +23,7 @@
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_platform.h>
+#include <linux/platform_data/dmtimer-omap.h>
#include <linux/platform_data/pwm_omap_dmtimer.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
@@ -37,7 +38,7 @@ struct pwm_omap_dmtimer_chip {
struct pwm_chip chip;
struct mutex mutex;
pwm_omap_dmtimer *dm_timer;
- struct pwm_omap_dmtimer_pdata *pdata;
+ const struct omap_dm_timer_ops *pdata;
struct platform_device *dm_timer_pdev;
};
@@ -242,19 +243,35 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct device_node *timer;
+ struct platform_device *timer_pdev;
struct pwm_omap_dmtimer_chip *omap;
- struct pwm_omap_dmtimer_pdata *pdata;
+ struct dmtimer_platform_data *timer_pdata;
+ const struct omap_dm_timer_ops *pdata;
pwm_omap_dmtimer *dm_timer;
u32 v;
- int status;
+ int ret = 0;
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "Missing dmtimer platform data\n");
- return -EINVAL;
+ timer = of_parse_phandle(np, "ti,timers", 0);
+ if (!timer)
+ return -ENODEV;
+
+ timer_pdev = of_find_device_by_node(timer);
+ if (!timer_pdev) {
+ dev_err(&pdev->dev, "Unable to find Timer pdev\n");
+ ret = -ENODEV;
+ goto put;
}
- if (!pdata->request_by_node ||
+ timer_pdata = dev_get_platdata(&timer_pdev->dev);
+ if (!timer_pdata) {
+ dev_err(&pdev->dev, "dmtimer pdata structure NULL\n");
+ ret = -EINVAL;
+ goto put;
+ }
+
+ pdata = timer_pdata->timer_ops;
+
+ if (!pdata || !pdata->request_by_node ||
!pdata->free ||
!pdata->enable ||
!pdata->disable ||
@@ -267,21 +284,26 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
!pdata->set_prescaler ||
!pdata->write_counter) {
dev_err(&pdev->dev, "Incomplete dmtimer pdata structure\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto put;
}
- timer = of_parse_phandle(np, "ti,timers", 0);
- if (!timer)
- return -ENODEV;
-
if (!of_get_property(timer, "ti,timer-pwm", NULL)) {
dev_err(&pdev->dev, "Missing ti,timer-pwm capability\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto put;
}
dm_timer = pdata->request_by_node(timer);
- if (!dm_timer)
- return -EPROBE_DEFER;
+ if (!dm_timer) {
+ ret = -EPROBE_DEFER;
+ goto put;
+ }
+
+put:
+ of_node_put(timer);
+ if (ret < 0)
+ return ret;
omap = devm_kzalloc(&pdev->dev, sizeof(*omap), GFP_KERNEL);
if (!omap) {
@@ -291,13 +313,7 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
omap->pdata = pdata;
omap->dm_timer = dm_timer;
-
- omap->dm_timer_pdev = of_find_device_by_node(timer);
- if (!omap->dm_timer_pdev) {
- dev_err(&pdev->dev, "Unable to find timer pdev\n");
- omap->pdata->free(dm_timer);
- return -EINVAL;
- }
+ omap->dm_timer_pdev = timer_pdev;
/*
* Ensure that the timer is stopped before we allow PWM core to call
@@ -322,11 +338,11 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
mutex_init(&omap->mutex);
- status = pwmchip_add(&omap->chip);
- if (status < 0) {
+ ret = pwmchip_add(&omap->chip);
+ if (ret < 0) {
dev_err(&pdev->dev, "failed to register PWM\n");
omap->pdata->free(omap->dm_timer);
- return status;
+ return ret;
}
platform_set_drvdata(pdev, omap);