From: Lee Jones <lee.jones@linaro.org>
To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: kernel@stlinux.com, maxime.coquelin@st.com,
patrice.chotard@st.com, thierry.reding@gmail.com,
robh+dt@kernel.org, linux-pwm@vger.kernel.org,
devicetree@vger.kernel.org, Lee Jones <lee.jones@linaro.org>
Subject: [PATCH v3 19/20] pwm: sti: Take the opportunity to conduct a little house keeping
Date: Wed, 8 Jun 2016 10:21:34 +0100 [thread overview]
Message-ID: <20160608092135.21184-20-lee.jones@linaro.org> (raw)
In-Reply-To: <20160608092135.21184-1-lee.jones@linaro.org>
This includes fixing some Coding Style issues and re-ordering/
simplifying a little code.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
drivers/pwm/pwm-sti.c | 40 ++++++++++++++++++++++------------------
1 file changed, 22 insertions(+), 18 deletions(-)
diff --git a/drivers/pwm/pwm-sti.c b/drivers/pwm/pwm-sti.c
index 64db5a5..4987a19 100644
--- a/drivers/pwm/pwm-sti.c
+++ b/drivers/pwm/pwm-sti.c
@@ -1,8 +1,10 @@
/*
- * PWM device driver for ST SoCs.
- * Author: Ajit Pal Singh <ajitpal.singh@st.com>
+ * PWM device driver for ST SoCs
+ *
+ * Copyright (C) 2013-2016 STMicroelectronics (R&D) Limited
*
- * Copyright (C) 2013-2014 STMicroelectronics (R&D) Limited
+ * Author: Ajit Pal Singh <ajitpal.singh@st.com>
+ * Lee Jones <lee.jones@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -142,13 +144,13 @@ static int sti_pwm_get_prescale(struct sti_pwm_chip *pc, unsigned long period,
val = NSEC_PER_SEC / clk_rate;
val *= cdata->max_pwm_cnt + 1;
- if (period % val) {
+ if (period % val)
return -EINVAL;
- } else {
- ps = period / val - 1;
- if (ps > cdata->max_prescale)
- return -EINVAL;
- }
+
+ ps = period / val - 1;
+ if (ps > cdata->max_prescale)
+ return -EINVAL;
+
*prescale = ps;
return 0;
@@ -164,7 +166,7 @@ static int sti_pwm_get_prescale(struct sti_pwm_chip *pc, unsigned long period,
* 256 values.
*/
static int sti_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
- int duty_ns, int period_ns)
+ int duty_ns, int period_ns)
{
struct sti_pwm_chip *pc = to_sti_pwmchip(chip);
struct sti_pwm_compat_data *cdata = pc->cdata;
@@ -210,7 +212,7 @@ static int sti_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
ret =
regmap_field_write(pc->prescale_low,
- prescale & PWM_PRESCALE_LOW_MASK);
+ prescale & PWM_PRESCALE_LOW_MASK);
if (ret)
goto clk_dis;
@@ -273,7 +275,7 @@ static int sti_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
ret = regmap_field_write(pc->pwm_out_en, 1);
if (ret) {
- dev_err(dev, "failed to enable PWM device:%d\n",
+ dev_err(dev, "failed to enable PWM device %d\n",
pwm->hwpwm);
goto out;
}
@@ -293,10 +295,12 @@ static void sti_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
mutex_unlock(&pc->sti_pwm_lock);
return;
}
+
regmap_field_write(pc->pwm_out_en, 0);
clk_disable(pc->pwm_clk);
clk_disable(pc->cpt_clk);
+
mutex_unlock(&pc->sti_pwm_lock);
}
@@ -512,7 +516,7 @@ static int sti_pwm_probe_dt(struct sti_pwm_chip *pc)
return PTR_ERR(pc->pwm_cpt_en);
pc->pwm_cpt_int_en = devm_regmap_field_alloc(dev, pc->regmap,
- reg_fields[PWM_CPT_INT_EN]);
+ reg_fields[PWM_CPT_INT_EN]);
if (IS_ERR(pc->pwm_cpt_int_en))
return PTR_ERR(pc->pwm_cpt_int_en);
@@ -575,11 +579,11 @@ static int sti_pwm_probe(struct platform_device *pdev)
* Setup PWM data with default values: some values could be replaced
* with specific ones provided from Device Tree.
*/
- cdata->reg_fields = &sti_pwm_regfields[0];
- cdata->max_prescale = 0xff;
- cdata->max_pwm_cnt = 255;
- cdata->pwm_num_devs = 0;
- cdata->cpt_num_devs = 0;
+ cdata->reg_fields = &sti_pwm_regfields[0];
+ cdata->max_prescale = 0xff;
+ cdata->max_pwm_cnt = 255;
+ cdata->pwm_num_devs = 0;
+ cdata->cpt_num_devs = 0;
pc->cdata = cdata;
pc->dev = dev;
--
2.8.3
next prev parent reply other threads:[~2016-06-08 9:23 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 9:21 [PATCH v3 00/20] pwm: Add support for PWM Capture Lee Jones
2016-06-08 9:21 ` [PATCH v3 01/20] ARM: dts: STi: Rename properites in line with PWM naming conventions Lee Jones
2016-06-08 9:21 ` [PATCH v3 02/20] ARM: dts: STiH407: Supply PWM Capture IRQ Lee Jones
2016-06-08 9:21 ` [PATCH v3 03/20] ARM: dts: STiH407: Declare PWM Capture data lines via Pinctrl Lee Jones
2016-06-08 9:21 ` [PATCH v3 04/20] ARM: dts: STiH416: Supply PWM Capture IRQs Lee Jones
2016-06-08 9:21 ` [PATCH v3 05/20] ARM: dts: STiH416: Declare PWM Capture data lines via Pinctrl Lee Jones
2016-06-08 9:21 ` [PATCH v3 06/20] ARM: dts: STiH416: Define PWM Capture clock Lee Jones
2016-06-08 9:21 ` [PATCH v3 07/20] ARM: dts: STiH416: Define the number of PWM Capture channels Lee Jones
2016-06-08 9:21 ` [PATCH v3 08/20] pwm: Add PWM Capture support Lee Jones
2016-06-10 13:53 ` Thierry Reding
2016-06-10 14:38 ` Lee Jones
2016-06-10 16:39 ` Thierry Reding
2016-06-20 11:14 ` Lee Jones
2016-06-08 9:21 ` [PATCH v3 09/20] pwm: sti: Rename channel => device Lee Jones
2016-06-08 9:21 ` [PATCH v3 10/20] pwm: sysfs: Add PWM Capture support Lee Jones
2016-06-10 14:04 ` Thierry Reding
2016-06-10 14:36 ` Lee Jones
2016-06-08 9:21 ` [PATCH v3 11/20] pwm: sti: Reorganise register names in preparation for new functionality Lee Jones
2016-06-08 9:21 ` [PATCH v3 12/20] pwm: sti: Only request clock rate when you need to Lee Jones
2016-06-08 9:21 ` [PATCH v3 13/20] pwm: sti: Supply PWM Capture register addresses and bit locations Lee Jones
2016-06-08 9:21 ` [PATCH v3 14/20] pwm: sti: Supply PWM Capture clock handling Lee Jones
2016-06-08 9:21 ` [PATCH v3 15/20] pwm: sti: Initialise PWM Capture device data Lee Jones
2016-06-08 9:21 ` [PATCH v3 16/20] pwm: sti: Add support for PWM Capture IRQs Lee Jones
2016-06-08 9:21 ` [PATCH v3 17/20] pwm: sti: Add PWM Capture call-back Lee Jones
2016-06-08 9:21 ` [PATCH v3 18/20] pwm: sti: It's now valid for number of PWM channels to be zero Lee Jones
2016-06-08 9:21 ` Lee Jones [this message]
2016-06-08 9:21 ` [PATCH v3 20/20] dt-bindings: pwm: sti: Update DT bindings with recent changes Lee Jones
2016-06-08 20:51 ` Rob Herring
2016-06-09 11:41 ` Lee Jones
2016-06-10 13:18 ` Thierry Reding
2016-06-10 14:06 ` Lee Jones
2016-06-10 14:53 ` Thierry Reding
2016-06-10 15:19 ` Lee Jones
2016-07-13 9:02 ` Lee Jones
2016-06-10 13:10 ` Thierry Reding
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