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phy: Add API for a bulk of phys

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This patch adds a "bulk" API to the phy API in order to
get/init/exit/power on/off a group of phys associated
with a device.

The bulk API will avoid adding a copy of the same code to
manage a group of phys in drivers.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This commit is contained in:
Chunfeng Yun
2020-05-02 11:35:11 +02:00
committed by Marek Vasut
parent bf6ad91629
commit b13307b470
2 changed files with 189 additions and 0 deletions
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97
drivers/phy/phy-uclass.c
View File

@@ -6,6 +6,7 @@
#include <common.h>
#include <dm.h>
#include <dm/devres.h>
#include <generic-phy.h>
static inline struct phy_ops *phy_dev_ops(struct udevice *dev)
@@ -167,6 +168,102 @@ int generic_phy_power_off(struct phy *phy)
return ops->power_off ? ops->power_off(phy) : 0;
}
int generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk)
{
int i, ret, count;
bulk->count = 0;
/* Return if no phy declared */
if (!dev_read_prop(dev, "phys", NULL))
return 0;
count = dev_count_phandle_with_args(dev, "phys", "#phy-cells");
if (count < 1)
return count;
bulk->phys = devm_kcalloc(dev, count, sizeof(struct phy), GFP_KERNEL);
if (!bulk->phys)
return -ENOMEM;
for (i = 0; i < count; i++) {
ret = generic_phy_get_by_index(dev, i, &bulk->phys[i]);
if (ret) {
pr_err("Failed to get PHY%d for %s\n", i, dev->name);
return ret;
}
bulk->count++;
}
return 0;
}
int generic_phy_init_bulk(struct phy_bulk *bulk)
{
struct phy *phys = bulk->phys;
int i, ret;
for (i = 0; i < bulk->count; i++) {
ret = generic_phy_init(&phys[i]);
if (ret) {
pr_err("Can't init PHY%d\n", i);
goto phys_init_err;
}
}
return 0;
phys_init_err:
for (; i > 0; i--)
generic_phy_exit(&phys[i - 1]);
return ret;
}
int generic_phy_exit_bulk(struct phy_bulk *bulk)
{
struct phy *phys = bulk->phys;
int i, ret = 0;
for (i = 0; i < bulk->count; i++)
ret |= generic_phy_exit(&phys[i]);
return ret;
}
int generic_phy_power_on_bulk(struct phy_bulk *bulk)
{
struct phy *phys = bulk->phys;
int i, ret;
for (i = 0; i < bulk->count; i++) {
ret = generic_phy_power_on(&phys[i]);
if (ret) {
pr_err("Can't power on PHY%d\n", i);
goto phys_poweron_err;
}
}
return 0;
phys_poweron_err:
for (; i > 0; i--)
generic_phy_power_off(&phys[i - 1]);
return ret;
}
int generic_phy_power_off_bulk(struct phy_bulk *bulk)
{
struct phy *phys = bulk->phys;
int i, ret = 0;
for (i = 0; i < bulk->count; i++)
ret |= generic_phy_power_off(&phys[i]);
return ret;
}
UCLASS_DRIVER(phy) = {
.id = UCLASS_PHY,
.name = "phy",