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-nomadik.c | 42 +++++++++++-------------------------------
1 files changed, 11 insertions(+), 31 deletions(-)
diff --git a/kernel/drivers/i2c/busses/i2c-nomadik.c b/kernel/drivers/i2c/busses/i2c-nomadik.c
index a3363b2..a06c4b7 100644
--- a/kernel/drivers/i2c/busses/i2c-nomadik.c
+++ b/kernel/drivers/i2c/busses/i2c-nomadik.c
@@ -970,12 +970,10 @@
struct i2c_vendor_data *vendor = id->data;
u32 max_fifo_threshold = (vendor->fifodepth / 2) - 1;
- dev = devm_kzalloc(&adev->dev, sizeof(struct nmk_i2c_dev), GFP_KERNEL);
- if (!dev) {
- dev_err(&adev->dev, "cannot allocate memory\n");
- ret = -ENOMEM;
- goto err_no_mem;
- }
+ dev = devm_kzalloc(&adev->dev, sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
dev->vendor = vendor;
dev->adev = adev;
nmk_i2c_of_probe(np, dev);
@@ -996,30 +994,21 @@
dev->virtbase = devm_ioremap(&adev->dev, adev->res.start,
resource_size(&adev->res));
- if (!dev->virtbase) {
- ret = -ENOMEM;
- goto err_no_mem;
- }
+ if (!dev->virtbase)
+ return -ENOMEM;
dev->irq = adev->irq[0];
ret = devm_request_irq(&adev->dev, dev->irq, i2c_irq_handler, 0,
DRIVER_NAME, dev);
if (ret) {
dev_err(&adev->dev, "cannot claim the irq %d\n", dev->irq);
- goto err_no_mem;
+ return ret;
}
- dev->clk = devm_clk_get(&adev->dev, NULL);
+ dev->clk = devm_clk_get_enabled(&adev->dev, NULL);
if (IS_ERR(dev->clk)) {
- dev_err(&adev->dev, "could not get i2c clock\n");
- ret = PTR_ERR(dev->clk);
- goto err_no_mem;
- }
-
- ret = clk_prepare_enable(dev->clk);
- if (ret) {
- dev_err(&adev->dev, "can't prepare_enable clock\n");
- goto err_no_mem;
+ dev_err(&adev->dev, "could enable i2c clock\n");
+ return PTR_ERR(dev->clk);
}
init_hw(dev);
@@ -1042,22 +1031,15 @@
ret = i2c_add_adapter(adap);
if (ret)
- goto err_no_adap;
+ return ret;
pm_runtime_put(&adev->dev);
return 0;
-
- err_no_adap:
- clk_disable_unprepare(dev->clk);
- err_no_mem:
-
- return ret;
}
static void nmk_i2c_remove(struct amba_device *adev)
{
- struct resource *res = &adev->res;
struct nmk_i2c_dev *dev = amba_get_drvdata(adev);
i2c_del_adapter(&dev->adap);
@@ -1066,8 +1048,6 @@
clear_all_interrupts(dev);
/* disable the controller */
i2c_clr_bit(dev->virtbase + I2C_CR, I2C_CR_PE);
- clk_disable_unprepare(dev->clk);
- release_mem_region(res->start, resource_size(res));
}
static struct i2c_vendor_data vendor_stn8815 = {
--
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