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dm: syscon: Allow finding devices by driver data

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We have a way to find a regmap by its syscon driver data value. Add the same
for syscon itself.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2016-01-17 16:11:08 -07:00
committed by Bin Meng
parent 907eed2ce3
commit ac94b7bcbe
3 changed files with 50 additions and 12 deletions
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31
drivers/core/syscon-uclass.c
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@@ -32,7 +32,7 @@ static int syscon_pre_probe(struct udevice *dev)
return regmap_init_mem(dev, &priv->regmap);
}
struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data)
int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp)
{
struct udevice *dev;
struct uclass *uc;
@@ -40,22 +40,29 @@ struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data)
ret = uclass_get(UCLASS_SYSCON, &uc);
if (ret)
return ERR_PTR(ret);
return ret;
uclass_foreach_dev(dev, uc) {
if (dev->driver_data == driver_data) {
struct syscon_uc_info *priv;
int ret;
ret = device_probe(dev);
if (ret)
return ERR_PTR(ret);
priv = dev_get_uclass_priv(dev);
return priv->regmap;
*devp = dev;
return device_probe(dev);
}
}
return ERR_PTR(-ENODEV);
return -ENODEV;
}
struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data)
{
struct syscon_uc_info *priv;
struct udevice *dev;
int ret;
ret = syscon_get_by_driver_data(driver_data, &dev);
if (ret)
return ERR_PTR(ret);
priv = dev_get_uclass_priv(dev);
return priv->regmap;
}
void *syscon_get_first_range(ulong driver_data)