reset-stm32.c (4f2c0a4acffbec01079c28f839422e64ddeff004) reset-stm32.c (30500c2ad9c440d1a81e7a5dac3bcef62e21d910)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) STMicroelectronics 2022 - All Rights Reserved
4 * Author: Gabriel Fernandez <gabriel.fernandez@foss.st.com> for STMicroelectronics.
5 */
6
7#include <linux/of.h>
8#include <linux/platform_device.h>
9#include <linux/regmap.h>
10#include <linux/reset-controller.h>
11#include <linux/slab.h>
12#include <linux/spinlock.h>
13
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) STMicroelectronics 2022 - All Rights Reserved
4 * Author: Gabriel Fernandez <gabriel.fernandez@foss.st.com> for STMicroelectronics.
5 */
6
7#include <linux/of.h>
8#include <linux/platform_device.h>
9#include <linux/regmap.h>
10#include <linux/reset-controller.h>
11#include <linux/slab.h>
12#include <linux/spinlock.h>
13
14#include "clk-stm32-core.h"
14#include "reset-stm32.h"
15
15
16#define STM32_RESET_ID_MASK GENMASK(15, 0)
17
18struct stm32_reset_data {
19 /* reset lock */
20 spinlock_t lock;
21 struct reset_controller_dev rcdev;
22 void __iomem *membase;
23 u32 clear_offset;
24};
25

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94}
95
96static const struct reset_control_ops stm32_reset_ops = {
97 .assert = stm32_reset_assert,
98 .deassert = stm32_reset_deassert,
99 .status = stm32_reset_status,
100};
101
16struct stm32_reset_data {
17 /* reset lock */
18 spinlock_t lock;
19 struct reset_controller_dev rcdev;
20 void __iomem *membase;
21 u32 clear_offset;
22};
23

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92}
93
94static const struct reset_control_ops stm32_reset_ops = {
95 .assert = stm32_reset_assert,
96 .deassert = stm32_reset_deassert,
97 .status = stm32_reset_status,
98};
99
102int stm32_rcc_reset_init(struct device *dev, const struct of_device_id *match,
100int stm32_rcc_reset_init(struct device *dev, struct clk_stm32_reset_data *data,
103 void __iomem *base)
104{
101 void __iomem *base)
102{
105 const struct stm32_rcc_match_data *data = match->data;
106 struct stm32_reset_data *reset_data = NULL;
103 struct stm32_reset_data *reset_data;
107
104
108 data = match->data;
109
110 reset_data = kzalloc(sizeof(*reset_data), GFP_KERNEL);
111 if (!reset_data)
112 return -ENOMEM;
113
114 spin_lock_init(&reset_data->lock);
105 reset_data = kzalloc(sizeof(*reset_data), GFP_KERNEL);
106 if (!reset_data)
107 return -ENOMEM;
108
109 spin_lock_init(&reset_data->lock);
110
115 reset_data->membase = base;
116 reset_data->rcdev.owner = THIS_MODULE;
117 reset_data->rcdev.ops = &stm32_reset_ops;
118 reset_data->rcdev.of_node = dev_of_node(dev);
111 reset_data->membase = base;
112 reset_data->rcdev.owner = THIS_MODULE;
113 reset_data->rcdev.ops = &stm32_reset_ops;
114 reset_data->rcdev.of_node = dev_of_node(dev);
119 reset_data->rcdev.nr_resets = STM32_RESET_ID_MASK;
115 reset_data->rcdev.nr_resets = data->nr_lines;
120 reset_data->clear_offset = data->clear_offset;
121
122 return reset_controller_register(&reset_data->rcdev);
123}
116 reset_data->clear_offset = data->clear_offset;
117
118 return reset_controller_register(&reset_data->rcdev);
119}