drivers/reset/reset-meson.c

1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
3  * Amlogic Meson Reset Controller driver
14 #include <linux/reset-controller.h>
39 	void __iomem *reg_addr = data->reg_base + (bank << 2);  in meson_reset_reset()
57 	reg_addr = data->reg_base + data->param->level_offset + (bank << 2);  in meson_reset_level()
59 	spin_lock_irqsave(&data->lock, flags);  in meson_reset_level()
67 	spin_unlock_irqrestore(&data->lock, flags);  in meson_reset_level()
85 	.reset		= meson_reset_reset,
111 	 { .compatible = "amlogic,meson8b-reset",    .data = &meson8b_param},
112 	 { .compatible = "amlogic,meson-gxbb-reset", .data = &meson8b_param},
113 	 { .compatible = "amlogic,meson-axg-reset",  .data = &meson8b_param},
114 	 { .compatible = "amlogic,meson-a1-reset",   .data = &meson_a1_param},
115 	 { .compatible = "amlogic,meson-s4-reset",   .data = &meson_s4_param},
116 	 { .compatible = "amlogic,c3-reset",   .data = &meson_s4_param},
117 	 { .compatible = "amlogic,t7-reset",   .data = &t7_param},
126 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);  in meson_reset_probe()
128 		return -ENOMEM;  in meson_reset_probe()
130 	data->reg_base = devm_platform_ioremap_resource(pdev, 0);  in meson_reset_probe()
131 	if (IS_ERR(data->reg_base))  in meson_reset_probe()
132 		return PTR_ERR(data->reg_base);  in meson_reset_probe()
134 	data->param = of_device_get_match_data(&pdev->dev);  in meson_reset_probe()
135 	if (!data->param)  in meson_reset_probe()
136 		return -ENODEV;  in meson_reset_probe()
138 	spin_lock_init(&data->lock);  in meson_reset_probe()
140 	data->rcdev.owner = THIS_MODULE;  in meson_reset_probe()
141 	data->rcdev.nr_resets = data->param->reg_count * BITS_PER_REG;  in meson_reset_probe()
142 	data->rcdev.ops = &meson_reset_ops;  in meson_reset_probe()
143 	data->rcdev.of_node = pdev->dev.of_node;  in meson_reset_probe()
145 	return devm_reset_controller_register(&pdev->dev, &data->rcdev);  in meson_reset_probe()
157 MODULE_DESCRIPTION("Amlogic Meson Reset Controller driver");