From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/drivers/pwm/pwm-lpc18xx-sct.c | 32 +++++++++++---------------------
1 files changed, 11 insertions(+), 21 deletions(-)
diff --git a/kernel/drivers/pwm/pwm-lpc18xx-sct.c b/kernel/drivers/pwm/pwm-lpc18xx-sct.c
index d7f5f7d..f32a9e0 100644
--- a/kernel/drivers/pwm/pwm-lpc18xx-sct.c
+++ b/kernel/drivers/pwm/pwm-lpc18xx-sct.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* NXP LPC18xx State Configurable Timer - Pulse Width Modulator driver
*
* Copyright (c) 2015 Ariel D'Alessandro <ariel@vanguardiasur.com>
- *
- * 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
- * the Free Software Foundation; either version 2 of the License.
*
* Notes
* =====
@@ -296,7 +293,6 @@
set_bit(event, &lpc18xx_pwm->event_map);
lpc18xx_data->duty_event = event;
- lpc18xx_pwm_config_duty(chip, pwm, pwm_get_duty_cycle(pwm));
return 0;
}
@@ -306,8 +302,6 @@
struct lpc18xx_pwm_chip *lpc18xx_pwm = to_lpc18xx_pwm_chip(chip);
struct lpc18xx_pwm_data *lpc18xx_data = pwm_get_chip_data(pwm);
- pwm_disable(pwm);
- pwm_set_duty_cycle(pwm, 0);
clear_bit(lpc18xx_data->duty_event, &lpc18xx_pwm->event_map);
}
@@ -331,7 +325,6 @@
{
struct lpc18xx_pwm_chip *lpc18xx_pwm;
struct pwm_device *pwm;
- struct resource *res;
int ret, i;
u64 val;
@@ -342,8 +335,7 @@
lpc18xx_pwm->dev = &pdev->dev;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- lpc18xx_pwm->base = devm_ioremap_resource(&pdev->dev, res);
+ lpc18xx_pwm->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(lpc18xx_pwm->base))
return PTR_ERR(lpc18xx_pwm->base);
@@ -406,12 +398,6 @@
lpc18xx_pwm_writel(lpc18xx_pwm, LPC18XX_PWM_LIMIT,
BIT(lpc18xx_pwm->period_event));
- ret = pwmchip_add(&lpc18xx_pwm->chip);
- if (ret < 0) {
- dev_err(&pdev->dev, "pwmchip_add failed: %d\n", ret);
- goto disable_pwmclk;
- }
-
for (i = 0; i < lpc18xx_pwm->chip.npwm; i++) {
struct lpc18xx_pwm_data *data;
@@ -421,13 +407,11 @@
GFP_KERNEL);
if (!data) {
ret = -ENOMEM;
- goto remove_pwmchip;
+ goto disable_pwmclk;
}
pwm_set_chip_data(pwm, data);
}
-
- platform_set_drvdata(pdev, lpc18xx_pwm);
val = lpc18xx_pwm_readl(lpc18xx_pwm, LPC18XX_PWM_CTRL);
val &= ~LPC18XX_PWM_BIDIR;
@@ -436,10 +420,16 @@
val |= LPC18XX_PWM_PRE(0);
lpc18xx_pwm_writel(lpc18xx_pwm, LPC18XX_PWM_CTRL, val);
+ ret = pwmchip_add(&lpc18xx_pwm->chip);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "pwmchip_add failed: %d\n", ret);
+ goto disable_pwmclk;
+ }
+
+ platform_set_drvdata(pdev, lpc18xx_pwm);
+
return 0;
-remove_pwmchip:
- pwmchip_remove(&lpc18xx_pwm->chip);
disable_pwmclk:
clk_disable_unprepare(lpc18xx_pwm->pwm_clk);
return ret;
--
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