| Message ID | 1516792764-2203-1-git-send-email-j-keerthy@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wednesday 24 January 2018 04:49 PM, Keerthy wrote: > 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> > --- > Changes in v9: > > * Reorganized the place where of_node_put was called. > > Changes in v8: > > * Added of_node_put call in success case of probe. > > Boot tested on am437x-gp-evm and dra7xx-evm. > Also compile tested omap1_defconfig with other patches of v7 > posted here: > > https://www.spinics.net/lists/linux-omap/msg141100.html > > With v9 version of Patch 8/9. > > drivers/pwm/pwm-omap-dmtimer.c | 66 ++++++++++++++++++++++++++---------------- > 1 file changed, 41 insertions(+), 25 deletions(-) > > diff --git a/drivers/pwm/pwm-omap-dmtimer.c b/drivers/pwm/pwm-omap-dmtimer.c > index 5ad42f3..aaf8d328 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; > + 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; > + 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 > @@ -322,8 +338,8 @@ 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; There is a mistake here please ignore this. I will send v10 in a bit! >
diff --git a/drivers/pwm/pwm-omap-dmtimer.c b/drivers/pwm/pwm-omap-dmtimer.c index 5ad42f3..aaf8d328 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; + 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; + 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 @@ -322,8 +338,8 @@ 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;