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mfd: display-serdes: Remove the loading of serdes child devices that are

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Change-Id: I7f151454fce6f5013812b7d2d824f44fae829bc4
Signed-off-by: Zitong Cai <zitong.cai@rock-chips.com>
This commit is contained in:
Zitong Cai
2025-03-31 17:34:10 +08:00
parent 73566298af
commit 4334e5e39a
1 changed files with 68 additions and 5 deletions
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73
drivers/mfd/display-serdes/serdes-core.c
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@@ -260,6 +260,72 @@ int serdes_set_bits(struct serdes *serdes, unsigned int reg,
}
EXPORT_SYMBOL_GPL(serdes_set_bits);
/**
* serdes_mfd_add: Manage serdes device resources
*
* Returns 0 on success.
*
* @dev: Pointer to parent device.
* @serdes_dev: Array of describing serdes child devices.
* @mfd_num: Number of serdes child devices to register.
*/
static int serdes_mfd_add(struct device *dev,
const struct mfd_cell *serdes_dev, int mfd_num)
{
int i, ret, num = 0;
const char *compatible;
struct mfd_cell *obj, *mfd_dev;
struct device_node *child = NULL;
int size = sizeof(struct mfd_cell);
struct device_node *parent_node = dev->of_node;
obj = kcalloc(mfd_num, size, GFP_KERNEL);
if (!obj)
return -ENOMEM;
for (i = 0; i < mfd_num; i++, serdes_dev++) {
compatible = serdes_dev->of_compatible;
for_each_available_child_of_node(parent_node, child) {
if (!of_device_is_compatible(child, compatible))
continue;
memcpy(&obj[num], serdes_dev, size);
num++;
of_node_put(child);
SERDES_DBG_MFD("%s: serdes child %s match\n", __func__, serdes_dev->name);
break;
}
}
if (num == 0) {
kfree(obj);
return 0;
}
mfd_dev = devm_kmemdup(dev, obj, num * size, GFP_KERNEL);
kfree(obj);
if (!mfd_dev)
return -ENOMEM;
ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, mfd_dev,
num, NULL, 0, NULL);
if (ret != 0) {
dev_err(dev, "Failed to add serdes child device\n");
goto err;
}
return 0;
err:
devm_kfree(dev, mfd_dev);
return ret;
}
/*
* Instantiate the generic non-control parts of the device.
*/
@@ -316,12 +382,9 @@ int serdes_device_init(struct serdes *serdes)
break;
}
ret = devm_mfd_add_devices(serdes->dev, PLATFORM_DEVID_AUTO, serdes_devs,
mfd_num, NULL, 0, NULL);
if (ret != 0) {
dev_err(serdes->dev, "Failed to add serdes children\n");
ret = serdes_mfd_add(serdes->dev, serdes_devs, mfd_num);
if (!ret)
return ret;
}
return 0;
}