From mboxrd@z Thu Jan 1 00:00:00 1970 From: boris.brezillon@free-electrons.com (Boris Brezillon) Date: Wed, 1 Jul 2015 10:21:49 +0200 Subject: [RFC PATCH 03/15] pwm: add pwm_get_polarity helper function In-Reply-To: <1435738921-25027-1-git-send-email-boris.brezillon@free-electrons.com> References: <1435738921-25027-1-git-send-email-boris.brezillon@free-electrons.com> Message-ID: <1435738921-25027-4-git-send-email-boris.brezillon@free-electrons.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Some drivers are directly accessing the ->polarity field in pwm_device. Add an helper to retrieve the current polarity so that we can easily move this field elsewhere (required to support atomic update). Signed-off-by: Boris Brezillon --- include/linux/pwm.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/pwm.h b/include/linux/pwm.h index d8f6913..6f286df 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -124,6 +124,11 @@ static inline unsigned int pwm_get_duty_cycle(const struct pwm_device *pwm) */ int pwm_set_polarity(struct pwm_device *pwm, enum pwm_polarity polarity); +static inline enum pwm_polarity pwm_get_polarity(const struct pwm_device *pwm) +{ + return pwm ? pwm->polarity : PWM_POLARITY_NORMAL; +} + /** * struct pwm_ops - PWM controller operations * @request: optional hook for requesting a PWM -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Brezillon Subject: [RFC PATCH 03/15] pwm: add pwm_get_polarity helper function Date: Wed, 1 Jul 2015 10:21:49 +0200 Message-ID: <1435738921-25027-4-git-send-email-boris.brezillon@free-electrons.com> References: <1435738921-25027-1-git-send-email-boris.brezillon@free-electrons.com> Return-path: Received: from down.free-electrons.com ([37.187.137.238]:34275 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751052AbbGAIWO (ORCPT ); Wed, 1 Jul 2015 04:22:14 -0400 In-Reply-To: <1435738921-25027-1-git-send-email-boris.brezillon@free-electrons.com> Sender: linux-leds-owner@vger.kernel.org List-Id: linux-leds@vger.kernel.org To: Thierry Reding , linux-pwm@vger.kernel.org Cc: Mark Brown , Liam Girdwood , Bryan Wu , Richard Purdie , Jacek Anaszewski , linux-leds@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Jean-Christophe Plagniol-Villard , Tomi Valkeinen , linux-fbdev@vger.kernel.org, Stephen Warren , Alexandre Courbot , linux-tegra@vger.kernel.org, Maxime Ripard , Jingoo Han , Lee Jones , Doug Anderson , Boris Brezillon Some drivers are directly accessing the ->polarity field in pwm_device. Add an helper to retrieve the current polarity so that we can easily move this field elsewhere (required to support atomic update). Signed-off-by: Boris Brezillon --- include/linux/pwm.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/pwm.h b/include/linux/pwm.h index d8f6913..6f286df 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -124,6 +124,11 @@ static inline unsigned int pwm_get_duty_cycle(const struct pwm_device *pwm) */ int pwm_set_polarity(struct pwm_device *pwm, enum pwm_polarity polarity); +static inline enum pwm_polarity pwm_get_polarity(const struct pwm_device *pwm) +{ + return pwm ? pwm->polarity : PWM_POLARITY_NORMAL; +} + /** * struct pwm_ops - PWM controller operations * @request: optional hook for requesting a PWM -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Brezillon Date: Wed, 01 Jul 2015 08:21:49 +0000 Subject: [RFC PATCH 03/15] pwm: add pwm_get_polarity helper function Message-Id: <1435738921-25027-4-git-send-email-boris.brezillon@free-electrons.com> List-Id: References: <1435738921-25027-1-git-send-email-boris.brezillon@free-electrons.com> In-Reply-To: <1435738921-25027-1-git-send-email-boris.brezillon@free-electrons.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org Some drivers are directly accessing the ->polarity field in pwm_device. Add an helper to retrieve the current polarity so that we can easily move this field elsewhere (required to support atomic update). Signed-off-by: Boris Brezillon --- include/linux/pwm.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/pwm.h b/include/linux/pwm.h index d8f6913..6f286df 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -124,6 +124,11 @@ static inline unsigned int pwm_get_duty_cycle(const struct pwm_device *pwm) */ int pwm_set_polarity(struct pwm_device *pwm, enum pwm_polarity polarity); +static inline enum pwm_polarity pwm_get_polarity(const struct pwm_device *pwm) +{ + return pwm ? pwm->polarity : PWM_POLARITY_NORMAL; +} + /** * struct pwm_ops - PWM controller operations * @request: optional hook for requesting a PWM -- 1.9.1