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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>
hifive-unleashed-5.1
Keerthy 2018-02-15 11:31:50 +05:30 committed by Tony Lindgren
parent 1a3acad266
commit b7290cf6ff
1 changed files with 42 additions and 26 deletions
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68
drivers/pwm/pwm-omap-dmtimer.c
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@ -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);