From: Chunfeng Yun chunfeng.yun@mediatek.com
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 --- v8: no changes
v7: provide bulk init/exit/power on/off separately suggested by Jagan
v6: add Reviewed-by Weijie
v5: no changes
v4: new patch --- drivers/phy/phy-uclass.c | 97 ++++++++++++++++++++++++++++++++++++++++ include/generic-phy.h | 92 +++++++++++++++++++++++++++++++++++++ 2 files changed, 189 insertions(+)
diff --git a/drivers/phy/phy-uclass.c b/drivers/phy/phy-uclass.c index e463b0b400..6ab78448af 100644 --- a/drivers/phy/phy-uclass.c +++ b/drivers/phy/phy-uclass.c @@ -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", diff --git a/include/generic-phy.h b/include/generic-phy.h index 73537025c2..55629ae0b4 100644 --- a/include/generic-phy.h +++ b/include/generic-phy.h @@ -124,6 +124,23 @@ struct phy_ops { int (*power_off)(struct phy *phy); };
+/** + * struct phy_bulk - A handle to (allowing control of) a bulk of phys. + * + * Consumers provide storage for the phy bulk. The content of the structure is + * managed solely by the phy API. A phy bulk struct is initialized + * by "get"ing the phy bulk struct. + * The phy bulk struct is passed to all other bulk phy APIs to apply + * the API to all the phy in the bulk struct. + * + * @phys: An array of phy handles. + * @count: The number of phy handles in the phys array. + */ +struct phy_bulk { + struct phy *phys; + unsigned int count; +}; + #ifdef CONFIG_PHY
/** @@ -250,6 +267,55 @@ int generic_phy_get_by_node(ofnode node, int index, struct phy *phy); int generic_phy_get_by_name(struct udevice *user, const char *phy_name, struct phy *phy);
+/** + * generic_phy_get_bulk - Get all phys of a device. + * + * This looks up and gets all phys of the consumer device; each device is + * assumed to have n phys associated with it somehow, and this function finds + * and gets all of them in a separate structure. + * + * @dev: The consumer device. + * @bulk A pointer to a phy bulk struct to initialize. + * @return 0 if OK, or a negative error code. + */ +int generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk); + +/** + * generic_phy_init_bulk() - Initialize all phys in a phy bulk struct. + * + * @bulk: A phy bulk struct that was previously successfully requested + * by generic_phy_get_bulk(). + * @return 0 if OK, or negative error code. + */ +int generic_phy_init_bulk(struct phy_bulk *bulk); + +/** + * generic_phy_exit_bulk() - de-initialize all phys in a phy bulk struct. + * + * @bulk: A phy bulk struct that was previously successfully requested + * by generic_phy_get_bulk(). + * @return 0 if OK, or negative error code. + */ +int generic_phy_exit_bulk(struct phy_bulk *bulk); + +/** + * generic_phy_power_on_bulk() - Power on all phys in a phy bulk struct. + * + * @bulk: A phy bulk struct that was previously successfully requested + * by generic_phy_get_bulk(). + * @return 0 if OK, or negative error code. + */ +int generic_phy_power_on_bulk(struct phy_bulk *bulk); + +/** + * generic_phy_power_off_bulk() - Power off all phys in a phy bulk struct. + * + * @bulk: A phy bulk struct that was previously successfully requested + * by generic_phy_get_bulk(). + * @return 0 if OK, or negative error code. + */ +int generic_phy_power_off_bulk(struct phy_bulk *bulk); + #else /* CONFIG_PHY */
static inline int generic_phy_init(struct phy *phy) @@ -289,6 +355,32 @@ static inline int generic_phy_get_by_name(struct udevice *user, const char *phy_ return 0; }
+static inline int +generic_phy_get_bulk(struct udevice *dev, struct phy_bulk *bulk) +{ + return 0; +} + +static inline int generic_phy_init_bulk(struct phy_bulk *bulk) +{ + return 0; +} + +static inline int generic_phy_exit_bulk(struct phy_bulk *bulk) +{ + return 0; +} + +static inline int generic_phy_power_on_bulk(struct phy_bulk *bulk) +{ + return 0; +} + +static inline int generic_phy_power_off_bulk(struct phy_bulk *bulk) +{ + return 0; +} + #endif /* CONFIG_PHY */
/**