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-sprd.c | 80 ++++++++++++++++++----------------------
1 files changed, 36 insertions(+), 44 deletions(-)
diff --git a/kernel/drivers/i2c/busses/i2c-sprd.c b/kernel/drivers/i2c/busses/i2c-sprd.c
index bb1478e..a520aa0 100644
--- a/kernel/drivers/i2c/busses/i2c-sprd.c
+++ b/kernel/drivers/i2c/busses/i2c-sprd.c
@@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
@@ -88,7 +89,6 @@
u32 count;
int irq;
int err;
- bool is_suspended;
};
static void sprd_i2c_set_count(struct sprd_i2c *i2c_dev, u32 count)
@@ -290,10 +290,7 @@
struct sprd_i2c *i2c_dev = i2c_adap->algo_data;
int im, ret;
- if (i2c_dev->is_suspended)
- return -EBUSY;
-
- ret = pm_runtime_get_sync(i2c_dev->dev);
+ ret = pm_runtime_resume_and_get(i2c_dev->dev);
if (ret < 0)
return ret;
@@ -346,9 +343,9 @@
writel(div1, i2c_dev->base + ADDR_DVD1);
/* Start hold timing = hold time(us) * source clock */
- if (freq == 400000)
+ if (freq == I2C_MAX_FAST_MODE_FREQ)
writel((6 * apb_clk) / 10000000, i2c_dev->base + ADDR_STA0_DVD);
- else if (freq == 100000)
+ else if (freq == I2C_MAX_STANDARD_MODE_FREQ)
writel((4 * apb_clk) / 1000000, i2c_dev->base + ADDR_STA0_DVD);
}
@@ -475,9 +472,9 @@
i2c_dev->clk = devm_clk_get(i2c_dev->dev, "enable");
if (IS_ERR(i2c_dev->clk)) {
- dev_warn(i2c_dev->dev, "i2c%d can't get the enable clock\n",
- i2c_dev->adap.nr);
- i2c_dev->clk = NULL;
+ dev_err(i2c_dev->dev, "i2c%d can't get the enable clock\n",
+ i2c_dev->adap.nr);
+ return PTR_ERR(i2c_dev->clk);
}
return 0;
@@ -487,7 +484,6 @@
{
struct device *dev = &pdev->dev;
struct sprd_i2c *i2c_dev;
- struct resource *res;
u32 prop;
int ret;
@@ -497,23 +493,20 @@
if (!i2c_dev)
return -ENOMEM;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- i2c_dev->base = devm_ioremap_resource(dev, res);
+ i2c_dev->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(i2c_dev->base))
return PTR_ERR(i2c_dev->base);
i2c_dev->irq = platform_get_irq(pdev, 0);
- if (i2c_dev->irq < 0) {
- dev_err(&pdev->dev, "failed to get irq resource\n");
+ if (i2c_dev->irq < 0)
return i2c_dev->irq;
- }
i2c_set_adapdata(&i2c_dev->adap, i2c_dev);
init_completion(&i2c_dev->complete);
snprintf(i2c_dev->adap.name, sizeof(i2c_dev->adap.name),
"%s", "sprd-i2c");
- i2c_dev->bus_freq = 100000;
+ i2c_dev->bus_freq = I2C_MAX_STANDARD_MODE_FREQ;
i2c_dev->adap.owner = THIS_MODULE;
i2c_dev->dev = dev;
i2c_dev->adap.retries = 3;
@@ -527,10 +520,14 @@
i2c_dev->bus_freq = prop;
/* We only support 100k and 400k now, otherwise will return error. */
- if (i2c_dev->bus_freq != 100000 && i2c_dev->bus_freq != 400000)
+ if (i2c_dev->bus_freq != I2C_MAX_STANDARD_MODE_FREQ &&
+ i2c_dev->bus_freq != I2C_MAX_FAST_MODE_FREQ)
return -EINVAL;
- sprd_i2c_clk_init(i2c_dev);
+ ret = sprd_i2c_clk_init(i2c_dev);
+ if (ret)
+ return ret;
+
platform_set_drvdata(pdev, i2c_dev);
ret = clk_prepare_enable(i2c_dev->clk);
@@ -581,10 +578,12 @@
ret = pm_runtime_get_sync(i2c_dev->dev);
if (ret < 0)
- return ret;
+ dev_err(&pdev->dev, "Failed to resume device (%pe)\n", ERR_PTR(ret));
i2c_del_adapter(&i2c_dev->adap);
- clk_disable_unprepare(i2c_dev->clk);
+
+ if (ret >= 0)
+ clk_disable_unprepare(i2c_dev->clk);
pm_runtime_put_noidle(i2c_dev->dev);
pm_runtime_disable(i2c_dev->dev);
@@ -592,40 +591,34 @@
return 0;
}
-static int __maybe_unused sprd_i2c_suspend_noirq(struct device *pdev)
+static int __maybe_unused sprd_i2c_suspend_noirq(struct device *dev)
{
- struct sprd_i2c *i2c_dev = dev_get_drvdata(pdev);
+ struct sprd_i2c *i2c_dev = dev_get_drvdata(dev);
- i2c_lock_bus(&i2c_dev->adap, I2C_LOCK_ROOT_ADAPTER);
- i2c_dev->is_suspended = true;
- i2c_unlock_bus(&i2c_dev->adap, I2C_LOCK_ROOT_ADAPTER);
-
- return pm_runtime_force_suspend(pdev);
+ i2c_mark_adapter_suspended(&i2c_dev->adap);
+ return pm_runtime_force_suspend(dev);
}
-static int __maybe_unused sprd_i2c_resume_noirq(struct device *pdev)
+static int __maybe_unused sprd_i2c_resume_noirq(struct device *dev)
{
- struct sprd_i2c *i2c_dev = dev_get_drvdata(pdev);
+ struct sprd_i2c *i2c_dev = dev_get_drvdata(dev);
- i2c_lock_bus(&i2c_dev->adap, I2C_LOCK_ROOT_ADAPTER);
- i2c_dev->is_suspended = false;
- i2c_unlock_bus(&i2c_dev->adap, I2C_LOCK_ROOT_ADAPTER);
-
- return pm_runtime_force_resume(pdev);
+ i2c_mark_adapter_resumed(&i2c_dev->adap);
+ return pm_runtime_force_resume(dev);
}
-static int __maybe_unused sprd_i2c_runtime_suspend(struct device *pdev)
+static int __maybe_unused sprd_i2c_runtime_suspend(struct device *dev)
{
- struct sprd_i2c *i2c_dev = dev_get_drvdata(pdev);
+ struct sprd_i2c *i2c_dev = dev_get_drvdata(dev);
clk_disable_unprepare(i2c_dev->clk);
return 0;
}
-static int __maybe_unused sprd_i2c_runtime_resume(struct device *pdev)
+static int __maybe_unused sprd_i2c_runtime_resume(struct device *dev)
{
- struct sprd_i2c *i2c_dev = dev_get_drvdata(pdev);
+ struct sprd_i2c *i2c_dev = dev_get_drvdata(dev);
int ret;
ret = clk_prepare_enable(i2c_dev->clk);
@@ -660,8 +653,7 @@
},
};
-static int sprd_i2c_init(void)
-{
- return platform_driver_register(&sprd_i2c_driver);
-}
-arch_initcall_sync(sprd_i2c_init);
+module_platform_driver(sprd_i2c_driver);
+
+MODULE_DESCRIPTION("Spreadtrum I2C master controller driver");
+MODULE_LICENSE("GPL v2");
--
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