From mboxrd@z Thu Jan 1 00:00:00 1970 From: Scott Branden Subject: [PATCH 1/4] pwm: kona: Remove setting default smooth type and polarity for all channels Date: Fri, 14 Nov 2014 10:29:57 -0800 Message-ID: <1415989800-7515-2-git-send-email-sbranden@broadcom.com> References: <1415989800-7515-1-git-send-email-sbranden@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1415989800-7515-1-git-send-email-sbranden@broadcom.com> Sender: linux-kernel-owner@vger.kernel.org To: Scott Branden , Thierry Reding Cc: Ray Jui , Arun Ramamurthy , bcm-kernel-feedback-list@broadcom.com, linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-pwm@vger.kernel.org From: Arun Ramamurthy The probe routine unnecessarily sets the smooth type and polarity for all channels. This causes the channel for the speaker to click at the same time the backlight turns on. The smooth type and polarity should be set individually for each channel as required and no defaults need to be set. Signed-off-by: Arun Ramamurthy Reviewed-by: Ray Jui Signed-off-by: Scott Branden --- drivers/pwm/pwm-bcm-kona.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/pwm/pwm-bcm-kona.c b/drivers/pwm/pwm-bcm-kona.c index 02bc048..29eef9e 100644 --- a/drivers/pwm/pwm-bcm-kona.c +++ b/drivers/pwm/pwm-bcm-kona.c @@ -266,12 +266,9 @@ static int kona_pwmc_probe(struct platform_device *pdev) return ret; } - /* Set smooth mode, push/pull, and normal polarity for all channels */ - for (chan = 0; chan < kp->chip.npwm; chan++) { - value |= (1 << PWM_CONTROL_SMOOTH_SHIFT(chan)); + /* Set push/pull for all channels */ + for (chan = 0; chan < kp->chip.npwm; chan++) value |= (1 << PWM_CONTROL_TYPE_SHIFT(chan)); - value |= (1 << PWM_CONTROL_POLARITY_SHIFT(chan)); - } writel(value, kp->base + PWM_CONTROL_OFFSET); -- 2.1.3