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phy: Add API for a bulk of phys
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>
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2 changed files with 189 additions and 0 deletions
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@ -6,6 +6,7 @@
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#include <common.h>
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#include <dm.h>
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#include <dm/devres.h>
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#include <generic-phy.h>
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static inline struct phy_ops *phy_dev_ops(struct udevice *dev)
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@ -167,6 +168,102 @@ int generic_phy_power_off(struct phy *phy)
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return ops->power_off ? ops->power_off(phy) : 0;
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}
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int generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk)
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{
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int i, ret, count;
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bulk->count = 0;
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/* Return if no phy declared */
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if (!dev_read_prop(dev, "phys", NULL))
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return 0;
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count = dev_count_phandle_with_args(dev, "phys", "#phy-cells");
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if (count < 1)
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return count;
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bulk->phys = devm_kcalloc(dev, count, sizeof(struct phy), GFP_KERNEL);
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if (!bulk->phys)
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return -ENOMEM;
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for (i = 0; i < count; i++) {
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ret = generic_phy_get_by_index(dev, i, &bulk->phys[i]);
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if (ret) {
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pr_err("Failed to get PHY%d for %s\n", i, dev->name);
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return ret;
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}
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bulk->count++;
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}
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return 0;
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}
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int generic_phy_init_bulk(struct phy_bulk *bulk)
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{
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struct phy *phys = bulk->phys;
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int i, ret;
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for (i = 0; i < bulk->count; i++) {
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ret = generic_phy_init(&phys[i]);
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if (ret) {
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pr_err("Can't init PHY%d\n", i);
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goto phys_init_err;
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}
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}
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return 0;
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phys_init_err:
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for (; i > 0; i--)
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generic_phy_exit(&phys[i - 1]);
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return ret;
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}
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int generic_phy_exit_bulk(struct phy_bulk *bulk)
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{
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struct phy *phys = bulk->phys;
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int i, ret = 0;
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for (i = 0; i < bulk->count; i++)
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ret |= generic_phy_exit(&phys[i]);
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return ret;
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}
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int generic_phy_power_on_bulk(struct phy_bulk *bulk)
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{
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struct phy *phys = bulk->phys;
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int i, ret;
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for (i = 0; i < bulk->count; i++) {
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ret = generic_phy_power_on(&phys[i]);
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if (ret) {
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pr_err("Can't power on PHY%d\n", i);
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goto phys_poweron_err;
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}
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}
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return 0;
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phys_poweron_err:
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for (; i > 0; i--)
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generic_phy_power_off(&phys[i - 1]);
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return ret;
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}
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int generic_phy_power_off_bulk(struct phy_bulk *bulk)
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{
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struct phy *phys = bulk->phys;
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int i, ret = 0;
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for (i = 0; i < bulk->count; i++)
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ret |= generic_phy_power_off(&phys[i]);
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return ret;
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}
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UCLASS_DRIVER(phy) = {
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.id = UCLASS_PHY,
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.name = "phy",
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@ -124,6 +124,23 @@ struct phy_ops {
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int (*power_off)(struct phy *phy);
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};
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/**
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* struct phy_bulk - A handle to (allowing control of) a bulk of phys.
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*
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* Consumers provide storage for the phy bulk. The content of the structure is
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* managed solely by the phy API. A phy bulk struct is initialized
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* by "get"ing the phy bulk struct.
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* The phy bulk struct is passed to all other bulk phy APIs to apply
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* the API to all the phy in the bulk struct.
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*
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* @phys: An array of phy handles.
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* @count: The number of phy handles in the phys array.
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*/
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struct phy_bulk {
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struct phy *phys;
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unsigned int count;
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};
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#ifdef CONFIG_PHY
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/**
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@ -250,6 +267,55 @@ int generic_phy_get_by_node(ofnode node, int index, struct phy *phy);
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int generic_phy_get_by_name(struct udevice *user, const char *phy_name,
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struct phy *phy);
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/**
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* generic_phy_get_bulk - Get all phys of a device.
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*
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* This looks up and gets all phys of the consumer device; each device is
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* assumed to have n phys associated with it somehow, and this function finds
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* and gets all of them in a separate structure.
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*
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* @dev: The consumer device.
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* @bulk A pointer to a phy bulk struct to initialize.
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* @return 0 if OK, or a negative error code.
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*/
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int generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk);
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/**
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* generic_phy_init_bulk() - Initialize all phys in a phy bulk struct.
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*
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* @bulk: A phy bulk struct that was previously successfully requested
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* by generic_phy_get_bulk().
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* @return 0 if OK, or negative error code.
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*/
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int generic_phy_init_bulk(struct phy_bulk *bulk);
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/**
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* generic_phy_exit_bulk() - de-initialize all phys in a phy bulk struct.
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*
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* @bulk: A phy bulk struct that was previously successfully requested
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* by generic_phy_get_bulk().
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* @return 0 if OK, or negative error code.
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*/
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int generic_phy_exit_bulk(struct phy_bulk *bulk);
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/**
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* generic_phy_power_on_bulk() - Power on all phys in a phy bulk struct.
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*
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* @bulk: A phy bulk struct that was previously successfully requested
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* by generic_phy_get_bulk().
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* @return 0 if OK, or negative error code.
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*/
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int generic_phy_power_on_bulk(struct phy_bulk *bulk);
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/**
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* generic_phy_power_off_bulk() - Power off all phys in a phy bulk struct.
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*
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* @bulk: A phy bulk struct that was previously successfully requested
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* by generic_phy_get_bulk().
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* @return 0 if OK, or negative error code.
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*/
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int generic_phy_power_off_bulk(struct phy_bulk *bulk);
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#else /* CONFIG_PHY */
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static inline int generic_phy_init(struct phy *phy)
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@ -289,6 +355,32 @@ static inline int generic_phy_get_by_name(struct udevice *user, const char *phy_
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return 0;
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}
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static inline int
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generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk)
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{
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return 0;
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}
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static inline int generic_phy_init_bulk(struct phy_bulk *bulk)
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{
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return 0;
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}
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static inline int generic_phy_exit_bulk(struct phy_bulk *bulk)
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{
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return 0;
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}
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static inline int generic_phy_power_on_bulk(struct phy_bulk *bulk)
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{
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return 0;
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}
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static inline int generic_phy_power_off_bulk(struct phy_bulk *bulk)
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{
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return 0;
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}
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#endif /* CONFIG_PHY */
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/**
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