From a5969cabbb4660eab42b6ef0412cbbd1200cf14d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 12 Oct 2024 07:10:09 +0000
Subject: [PATCH] 修改led为gpio
---
kernel/drivers/i2c/busses/i2c-lpc2k.c | 21 ++++++---------------
1 files changed, 6 insertions(+), 15 deletions(-)
diff --git a/kernel/drivers/i2c/busses/i2c-lpc2k.c b/kernel/drivers/i2c/busses/i2c-lpc2k.c
index 59167c0..4e30c52 100644
--- a/kernel/drivers/i2c/busses/i2c-lpc2k.c
+++ b/kernel/drivers/i2c/busses/i2c-lpc2k.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2011 NXP Semiconductors
*
@@ -9,12 +10,6 @@
* Anton Protopopov, Emcraft Systems, antonp@emcraft.com
*
* Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
*/
#include <linux/clk.h>
@@ -351,7 +346,6 @@
static int i2c_lpc2k_probe(struct platform_device *pdev)
{
struct lpc2k_i2c *i2c;
- struct resource *res;
u32 bus_clk_rate;
u32 scl_high;
u32 clkrate;
@@ -361,16 +355,13 @@
if (!i2c)
return -ENOMEM;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- i2c->base = devm_ioremap_resource(&pdev->dev, res);
+ i2c->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(i2c->base))
return PTR_ERR(i2c->base);
i2c->irq = platform_get_irq(pdev, 0);
- if (i2c->irq < 0) {
- dev_err(&pdev->dev, "can't get interrupt resource\n");
+ if (i2c->irq < 0)
return i2c->irq;
- }
init_waitqueue_head(&i2c->wait);
@@ -401,7 +392,7 @@
ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency",
&bus_clk_rate);
if (ret)
- bus_clk_rate = 100000; /* 100 kHz default clock rate */
+ bus_clk_rate = I2C_MAX_STANDARD_MODE_FREQ;
clkrate = clk_get_rate(i2c->clk);
if (clkrate == 0) {
@@ -412,9 +403,9 @@
/* Setup I2C dividers to generate clock with proper duty cycle */
clkrate = clkrate / bus_clk_rate;
- if (bus_clk_rate <= 100000)
+ if (bus_clk_rate <= I2C_MAX_STANDARD_MODE_FREQ)
scl_high = (clkrate * I2C_STD_MODE_DUTY) / 100;
- else if (bus_clk_rate <= 400000)
+ else if (bus_clk_rate <= I2C_MAX_FAST_MODE_FREQ)
scl_high = (clkrate * I2C_FAST_MODE_DUTY) / 100;
else
scl_high = (clkrate * I2C_FAST_MODE_PLUS_DUTY) / 100;
--
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