change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/drivers/pwm/sysfs.c
..
..
@@ -1,19 +1,10 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * A simple sysfs interface for the generic PWM framework
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  *
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  * Copyright (C) 2013 H Hartley Sweeten <hsweeten@visionengravers.com>
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  *
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  * Based on previous work by Lars Poeschel <poeschel@lemonage.de>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2, or (at your option)
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- * any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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9
 
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 #include <linux/device.h>
..
..
@@ -27,6 +18,7 @@
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 	struct device child;
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 	struct pwm_device *pwm;
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20
 	struct mutex lock;
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+	struct pwm_state suspend;
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 };
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23
 
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 static struct pwm_export *child_to_pwm_export(struct device *child)
..
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@@ -60,10 +52,10 @@
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 	struct pwm_export *export = child_to_pwm_export(child);
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 	struct pwm_device *pwm = export->pwm;
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 	struct pwm_state state;
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-	unsigned int val;
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+	u64 val;
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 	int ret;
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57
 
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-	ret = kstrtouint(buf, 0, &val);
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+	ret = kstrtou64(buf, 0, &val);
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 	if (ret)
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 		return ret;
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61
 
..
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@@ -95,10 +87,10 @@
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 	struct pwm_export *export = child_to_pwm_export(child);
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 	struct pwm_device *pwm = export->pwm;
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 	struct pwm_state state;
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-	unsigned int val;
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+	u64 val;
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 	int ret;
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-	ret = kstrtouint(buf, 0, &val);
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+	ret = kstrtou64(buf, 0, &val);
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 	if (ret)
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 		return ret;
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..
..
@@ -141,6 +133,76 @@
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 	mutex_lock(&export->lock);
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 	pwm_get_state(pwm, &state);
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 	state.oneshot_count = val;
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+	ret = pwm_apply_state(pwm, &state);
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+	mutex_unlock(&export->lock);
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+
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+	return ret ? : size;
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+}
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+
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+static ssize_t oneshot_repeat_show(struct device *child,
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+				   struct device_attribute *attr,
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+				   char *buf)
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+{
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+	const struct pwm_device *pwm = child_to_pwm_device(child);
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+	struct pwm_state state;
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+
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+	pwm_get_state(pwm, &state);
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+
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+	return sprintf(buf, "%u\n", state.oneshot_repeat);
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+}
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+
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+static ssize_t oneshot_repeat_store(struct device *child,
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+				    struct device_attribute *attr,
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+				    const char *buf, size_t size)
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+{
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+	struct pwm_export *export = child_to_pwm_export(child);
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+	struct pwm_device *pwm = export->pwm;
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+	struct pwm_state state;
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+	unsigned int val;
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+	int ret;
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+
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+	ret = kstrtouint(buf, 0, &val);
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+	if (ret)
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+		return ret;
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+
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+	mutex_lock(&export->lock);
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+	pwm_get_state(pwm, &state);
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+	state.oneshot_repeat = val;
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+	ret = pwm_apply_state(pwm, &state);
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+	mutex_unlock(&export->lock);
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+
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+	return ret ? : size;
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+}
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+
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+static ssize_t duty_offset_show(struct device *child,
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+				struct device_attribute *attr,
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+				char *buf)
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+{
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+	const struct pwm_device *pwm = child_to_pwm_device(child);
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+	struct pwm_state state;
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+
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+	pwm_get_state(pwm, &state);
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+
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+	return sprintf(buf, "%llu\n", state.duty_offset);
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+}
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+
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+static ssize_t duty_offset_store(struct device *child,
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+				 struct device_attribute *attr,
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+				 const char *buf, size_t size)
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+{
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+	struct pwm_export *export = child_to_pwm_export(child);
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+	struct pwm_device *pwm = export->pwm;
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+	struct pwm_state state;
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+	u64 val;
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+	int ret;
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+
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+	ret = kstrtou64(buf, 0, &val);
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+	if (ret)
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+		return ret;
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+
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+	mutex_lock(&export->lock);
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+	pwm_get_state(pwm, &state);
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+	state.duty_offset = val;
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 	ret = pwm_apply_state(pwm, &state);
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 	mutex_unlock(&export->lock);
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208
 
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@@ -257,27 +319,56 @@
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 	if (ret)
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 		return ret;
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321
 
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-	return sprintf(buf, "%llu %llu\n", result.period, result.duty_cycle);
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+	return sprintf(buf, "%u %u\n", result.period, result.duty_cycle);
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+}
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+
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+static ssize_t output_type_show(struct device *child,
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+			     struct device_attribute *attr,
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+			     char *buf)
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+{
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+	const struct pwm_device *pwm = child_to_pwm_device(child);
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+	const char *output_type = "unknown";
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+	struct pwm_state state;
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+
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+	pwm_get_state(pwm, &state);
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+	switch (state.output_type) {
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+	case PWM_OUTPUT_FIXED:
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+		output_type = "fixed";
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+		break;
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+	case PWM_OUTPUT_MODULATED:
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+		output_type = "modulated";
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+		break;
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+	default:
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+		break;
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+	}
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+
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+	return snprintf(buf, PAGE_SIZE, "%s\n", output_type);
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 }
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347
 
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 static DEVICE_ATTR_RW(period);
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 static DEVICE_ATTR_RW(duty_cycle);
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 #ifdef CONFIG_PWM_ROCKCHIP_ONESHOT
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 static DEVICE_ATTR_RW(oneshot_count);
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+static DEVICE_ATTR_RW(oneshot_repeat);
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+static DEVICE_ATTR_RW(duty_offset);
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 #endif
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355
 static DEVICE_ATTR_RW(enable);
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356
 static DEVICE_ATTR_RW(polarity);
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 static DEVICE_ATTR_RO(capture);
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+static DEVICE_ATTR_RO(output_type);
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359
 
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 static struct attribute *pwm_attrs[] = {
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 	&dev_attr_period.attr,
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 	&dev_attr_duty_cycle.attr,
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 #ifdef CONFIG_PWM_ROCKCHIP_ONESHOT
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 	&dev_attr_oneshot_count.attr,
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+	&dev_attr_oneshot_repeat.attr,
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+	&dev_attr_duty_offset.attr,
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 #endif
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 	&dev_attr_enable.attr,
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 	&dev_attr_polarity.attr,
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 	&dev_attr_capture.attr,
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+	&dev_attr_output_type.attr,
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 	NULL
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 };
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 ATTRIBUTE_GROUPS(pwm);
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@@ -292,6 +383,7 @@
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 static int pwm_export_child(struct device *parent, struct pwm_device *pwm)
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 {
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 	struct pwm_export *export;
386
+	char *pwm_prop[2];
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387
 	int ret;
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388
 
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 	if (test_and_set_bit(PWMF_EXPORTED, &pwm->flags))
..
..
@@ -319,6 +411,10 @@
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 		export = NULL;
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 		return ret;
321
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 	}
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+	pwm_prop[0] = kasprintf(GFP_KERNEL, "EXPORT=pwm%u", pwm->hwpwm);
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+	pwm_prop[1] = NULL;
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+	kobject_uevent_env(&parent->kobj, KOBJ_CHANGE, pwm_prop);
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+	kfree(pwm_prop[0]);
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418
 
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 	return 0;
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420
 }
..
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@@ -331,6 +427,7 @@
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 static int pwm_unexport_child(struct device *parent, struct pwm_device *pwm)
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 {
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 	struct device *child;
430
+	char *pwm_prop[2];
334
431
 
335
432
 	if (!test_and_clear_bit(PWMF_EXPORTED, &pwm->flags))
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 		return -ENODEV;
..
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@@ -338,6 +435,11 @@
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 	child = device_find_child(parent, pwm, pwm_unexport_match);
339
436
 	if (!child)
340
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 		return -ENODEV;
438
+
439
+	pwm_prop[0] = kasprintf(GFP_KERNEL, "UNEXPORT=pwm%u", pwm->hwpwm);
440
+	pwm_prop[1] = NULL;
441
+	kobject_uevent_env(&parent->kobj, KOBJ_CHANGE, pwm_prop);
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+	kfree(pwm_prop[0]);
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443
 
342
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 	/* for device_find_child() */
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 	put_device(child);
..
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@@ -413,10 +515,128 @@
413
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 };
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 ATTRIBUTE_GROUPS(pwm_chip);
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517
 
518
+/* takes export->lock on success */
519
+static struct pwm_export *pwm_class_get_state(struct device *parent,
520
+					      struct pwm_device *pwm,
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+					      struct pwm_state *state)
522
+{
523
+	struct device *child;
524
+	struct pwm_export *export;
525
+
526
+	if (!test_bit(PWMF_EXPORTED, &pwm->flags))
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+		return NULL;
528
+
529
+	child = device_find_child(parent, pwm, pwm_unexport_match);
530
+	if (!child)
531
+		return NULL;
532
+
533
+	export = child_to_pwm_export(child);
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+	put_device(child);	/* for device_find_child() */
535
+
536
+	mutex_lock(&export->lock);
537
+	pwm_get_state(pwm, state);
538
+
539
+	return export;
540
+}
541
+
542
+static int pwm_class_apply_state(struct pwm_export *export,
543
+				 struct pwm_device *pwm,
544
+				 struct pwm_state *state)
545
+{
546
+	int ret = pwm_apply_state(pwm, state);
547
+
548
+	/* release lock taken in pwm_class_get_state */
549
+	mutex_unlock(&export->lock);
550
+
551
+	return ret;
552
+}
553
+
554
+static int pwm_class_resume_npwm(struct device *parent, unsigned int npwm)
555
+{
556
+	struct pwm_chip *chip = dev_get_drvdata(parent);
557
+	unsigned int i;
558
+	int ret = 0;
559
+
560
+	for (i = 0; i < npwm; i++) {
561
+		struct pwm_device *pwm = &chip->pwms[i];
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+		struct pwm_state state;
563
+		struct pwm_export *export;
564
+
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+		export = pwm_class_get_state(parent, pwm, &state);
566
+		if (!export)
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+			continue;
568
+
569
+		/* If pwmchip was not enabled before suspend, do nothing. */
570
+		if (!export->suspend.enabled) {
571
+			/* release lock taken in pwm_class_get_state */
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+			mutex_unlock(&export->lock);
573
+			continue;
574
+		}
575
+
576
+		state.enabled = export->suspend.enabled;
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+		ret = pwm_class_apply_state(export, pwm, &state);
578
+		if (ret < 0)
579
+			break;
580
+	}
581
+
582
+	return ret;
583
+}
584
+
585
+static int __maybe_unused pwm_class_suspend(struct device *parent)
586
+{
587
+	struct pwm_chip *chip = dev_get_drvdata(parent);
588
+	unsigned int i;
589
+	int ret = 0;
590
+
591
+	for (i = 0; i < chip->npwm; i++) {
592
+		struct pwm_device *pwm = &chip->pwms[i];
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+		struct pwm_state state;
594
+		struct pwm_export *export;
595
+
596
+		export = pwm_class_get_state(parent, pwm, &state);
597
+		if (!export)
598
+			continue;
599
+
600
+		/*
601
+		 * If pwmchip was not enabled before suspend, save
602
+		 * state for resume time and do nothing else.
603
+		 */
604
+		export->suspend = state;
605
+		if (!state.enabled) {
606
+			/* release lock taken in pwm_class_get_state */
607
+			mutex_unlock(&export->lock);
608
+			continue;
609
+		}
610
+
611
+		state.enabled = false;
612
+		ret = pwm_class_apply_state(export, pwm, &state);
613
+		if (ret < 0) {
614
+			/*
615
+			 * roll back the PWM devices that were disabled by
616
+			 * this suspend function.
617
+			 */
618
+			pwm_class_resume_npwm(parent, i);
619
+			break;
620
+		}
621
+	}
622
+
623
+	return ret;
624
+}
625
+
626
+static int __maybe_unused pwm_class_resume(struct device *parent)
627
+{
628
+	struct pwm_chip *chip = dev_get_drvdata(parent);
629
+
630
+	return pwm_class_resume_npwm(parent, chip->npwm);
631
+}
632
+
633
+static SIMPLE_DEV_PM_OPS(pwm_class_pm_ops, pwm_class_suspend, pwm_class_resume);
634
+
416
635
 static struct class pwm_class = {
417
636
 	.name = "pwm",
418
637
 	.owner = THIS_MODULE,
419
638
 	.dev_groups = pwm_chip_groups,
639
+	.pm = &pwm_class_pm_ops,
420
640
 };
421
641
 
422
642
 static int pwmchip_sysfs_match(struct device *parent, const void *data)
..
..
@@ -430,7 +650,7 @@
430
650
 
431
651
 	/*
432
652
 	 * If device_create() fails the pwm_chip is still usable by
433
-	 * the kernel its just not exported.
653
+	 * the kernel it's just not exported.
434
654
 	 */
435
655
 	parent = device_create(&pwm_class, chip->dev, MKDEV(0, 0), chip,
436
656
 			       "pwmchip%d", chip->base);
..
..
@@ -465,8 +685,4 @@
465
685
 {
466
686
 	return class_register(&pwm_class);
467
687
 }
468
-#ifdef CONFIG_ROCKCHIP_THUNDER_BOOT
469
-postcore_initcall(pwm_sysfs_init);
470
-#else
471
688
 subsys_initcall(pwm_sysfs_init);
472
-#endif