修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/reset/hisilicon/hi6220_reset.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Hisilicon Hi6220 reset controller driver
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  *
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@@ -5,10 +6,6 @@
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  * Copyright (c) 2015-2016 Hisilicon Limited.
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  *
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  * Author: Feng Chen <puck.chen@hisilicon.com>
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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 version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/io.h>
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@@ -36,6 +33,7 @@
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 enum hi6220_reset_ctrl_type {
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 	PERIPHERAL,
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 	MEDIA,
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+	AO,
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 };
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 struct hi6220_reset_data {
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@@ -95,6 +93,65 @@
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 	.deassert = hi6220_media_deassert,
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 };
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+#define AO_SCTRL_SC_PW_CLKEN0     0x800
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+#define AO_SCTRL_SC_PW_CLKDIS0    0x804
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+
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+#define AO_SCTRL_SC_PW_RSTEN0     0x810
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+#define AO_SCTRL_SC_PW_RSTDIS0    0x814
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+
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+#define AO_SCTRL_SC_PW_ISOEN0     0x820
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+#define AO_SCTRL_SC_PW_ISODIS0    0x824
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+#define AO_MAX_INDEX              12
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+
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+static int hi6220_ao_assert(struct reset_controller_dev *rc_dev,
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+			       unsigned long idx)
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+{
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+	struct hi6220_reset_data *data = to_reset_data(rc_dev);
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+	struct regmap *regmap = data->regmap;
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+	int ret;
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+
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+	ret = regmap_write(regmap, AO_SCTRL_SC_PW_RSTEN0, BIT(idx));
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+	if (ret)
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+		return ret;
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+
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+	ret = regmap_write(regmap, AO_SCTRL_SC_PW_ISOEN0, BIT(idx));
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+	if (ret)
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+		return ret;
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+
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+	ret = regmap_write(regmap, AO_SCTRL_SC_PW_CLKDIS0, BIT(idx));
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+	return ret;
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+}
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+
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+static int hi6220_ao_deassert(struct reset_controller_dev *rc_dev,
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+				 unsigned long idx)
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+{
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+	struct hi6220_reset_data *data = to_reset_data(rc_dev);
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+	struct regmap *regmap = data->regmap;
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+	int ret;
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+
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+	/*
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+	 * It was suggested to disable isolation before enabling
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+	 * the clocks and deasserting reset, to avoid glitches.
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+	 * But this order is preserved to keep it matching the
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+	 * vendor code.
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+	 */
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+	ret = regmap_write(regmap, AO_SCTRL_SC_PW_RSTDIS0, BIT(idx));
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+	if (ret)
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+		return ret;
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+
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+	ret = regmap_write(regmap, AO_SCTRL_SC_PW_ISODIS0, BIT(idx));
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+	if (ret)
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+		return ret;
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+
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+	ret = regmap_write(regmap, AO_SCTRL_SC_PW_CLKEN0, BIT(idx));
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+	return ret;
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+}
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+
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+static const struct reset_control_ops hi6220_ao_reset_ops = {
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+	.assert = hi6220_ao_assert,
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+	.deassert = hi6220_ao_deassert,
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+};
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+
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 static int hi6220_reset_probe(struct platform_device *pdev)
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 {
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 	struct device_node *np = pdev->dev.of_node;
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@@ -120,9 +177,12 @@
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 	if (type == MEDIA) {
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 		data->rc_dev.ops = &hi6220_media_reset_ops;
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 		data->rc_dev.nr_resets = MEDIA_MAX_INDEX;
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-	} else {
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+	} else if (type == PERIPHERAL) {
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 		data->rc_dev.ops = &hi6220_peripheral_reset_ops;
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 		data->rc_dev.nr_resets = PERIPH_MAX_INDEX;
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+	} else {
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+		data->rc_dev.ops = &hi6220_ao_reset_ops;
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+		data->rc_dev.nr_resets = AO_MAX_INDEX;
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 	}
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 	return reset_controller_register(&data->rc_dev);
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@@ -137,6 +197,10 @@
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 		.compatible = "hisilicon,hi6220-mediactrl",
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 		.data = (void *)MEDIA,
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 	},
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+	{
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+		.compatible = "hisilicon,hi6220-aoctrl",
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+		.data = (void *)AO,
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+	},
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 	{ /* sentinel */ },
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 };
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 MODULE_DEVICE_TABLE(of, hi6220_reset_match);