修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/i2c/busses/i2c-lpc2k.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright (C) 2011 NXP Semiconductors
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  *
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@@ -9,12 +10,6 @@
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  * Anton Protopopov, Emcraft Systems, antonp@emcraft.com
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  *
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  * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.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 as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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  */
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 #include <linux/clk.h>
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@@ -351,7 +346,6 @@
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 static int i2c_lpc2k_probe(struct platform_device *pdev)
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 {
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 	struct lpc2k_i2c *i2c;
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-	struct resource *res;
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 	u32 bus_clk_rate;
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 	u32 scl_high;
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 	u32 clkrate;
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@@ -361,16 +355,13 @@
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 	if (!i2c)
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 		return -ENOMEM;
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	i2c->base = devm_ioremap_resource(&pdev->dev, res);
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+	i2c->base = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(i2c->base))
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 		return PTR_ERR(i2c->base);
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 	i2c->irq = platform_get_irq(pdev, 0);
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-	if (i2c->irq < 0) {
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-		dev_err(&pdev->dev, "can't get interrupt resource\n");
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+	if (i2c->irq < 0)
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 		return i2c->irq;
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-	}
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 	init_waitqueue_head(&i2c->wait);
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@@ -401,7 +392,7 @@
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 	ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency",
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 				   &bus_clk_rate);
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 	if (ret)
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-		bus_clk_rate = 100000; /* 100 kHz default clock rate */
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+		bus_clk_rate = I2C_MAX_STANDARD_MODE_FREQ;
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 	clkrate = clk_get_rate(i2c->clk);
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 	if (clkrate == 0) {
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@@ -412,9 +403,9 @@
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 	/* Setup I2C dividers to generate clock with proper duty cycle */
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 	clkrate = clkrate / bus_clk_rate;
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-	if (bus_clk_rate <= 100000)
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+	if (bus_clk_rate <= I2C_MAX_STANDARD_MODE_FREQ)
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 		scl_high = (clkrate * I2C_STD_MODE_DUTY) / 100;
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-	else if (bus_clk_rate <= 400000)
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+	else if (bus_clk_rate <= I2C_MAX_FAST_MODE_FREQ)
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 		scl_high = (clkrate * I2C_FAST_MODE_DUTY) / 100;
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 	else
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 		scl_high = (clkrate * I2C_FAST_MODE_PLUS_DUTY) / 100;