pwm: add period and polarity to struct pwm_lookup

Add period and polarity members to struct pwm_lookup so that platforms
using the lookup table can be treated the same way as those using the
device tree.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

2 files changed, 9 insertions, 1 deletions

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index a80471399c20..4b66bf09ee55 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -661,10 +661,16 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id)
                 }
         }
 
+        mutex_unlock(&pwm_lookup_lock);
+
         if (chip)
                 pwm = pwm_request_from_chip(chip, index, con_id ?: dev_id);
+        if (IS_ERR(pwm))
+                return pwm;
+
+        pwm_set_period(pwm, p->period);
+        pwm_set_polarity(pwm, p->polarity);
 
-        mutex_unlock(&pwm_lookup_lock);
 
         return pwm;
 }
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 4717f54051cb..2f45e2fe5b93 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -274,6 +274,8 @@ struct pwm_lookup {
         unsigned int index;
         const char *dev_id;
         const char *con_id;
+        unsigned int period;
+        enum pwm_polarity polarity;
 };
 
 #define PWM_LOOKUP(_provider, _index, _dev_id, _con_id) \