From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean-Jacques Hiblot Date: Fri, 7 Apr 2017 13:42:02 +0200 Subject: [U-Boot] [PATCH v2 03/10] drivers: phy: add generic PHY framework In-Reply-To: <1491565329-20267-1-git-send-email-jjhiblot@ti.com> References: <1491565329-20267-1-git-send-email-jjhiblot@ti.com> Message-ID: <1491565329-20267-4-git-send-email-jjhiblot@ti.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de The PHY framework provides a set of APIs to control a PHY. This API is derived from the linux version of the generic PHY framework. Currently the API supports init(), deinit(), power_on, power_off() and reset(). The framework provides a way to get a reference to a phy from the device-tree. Signed-off-by: Jean-Jacques Hiblot --- Makefile | 1 + drivers/Kconfig | 2 ++ drivers/Makefile | 1 + drivers/phy/Kconfig | 22 ++++++++++++++ drivers/phy/Makefile | 5 ++++ drivers/phy/phy-uclass.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++ include/dm/uclass-id.h | 1 + include/generic-phy.h | 38 ++++++++++++++++++++++++ 8 files changed, 147 insertions(+) create mode 100644 drivers/phy/Kconfig create mode 100644 drivers/phy/Makefile create mode 100644 drivers/phy/phy-uclass.c create mode 100644 include/generic-phy.h diff --git a/Makefile b/Makefile index 2638acf..06454ce 100644 --- a/Makefile +++ b/Makefile @@ -650,6 +650,7 @@ libs-y += fs/ libs-y += net/ libs-y += disk/ libs-y += drivers/ +libs-y += drivers/phy/ libs-y += drivers/dma/ libs-y += drivers/gpio/ libs-y += drivers/i2c/ diff --git a/drivers/Kconfig b/drivers/Kconfig index 0e5d97d..a90ceca 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -88,6 +88,8 @@ source "drivers/video/Kconfig" source "drivers/watchdog/Kconfig" +source "drivers/phy/Kconfig" + config PHYS_TO_BUS bool "Custom physical to bus address mapping" help diff --git a/drivers/Makefile b/drivers/Makefile index 5d8baa5..4656509 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -47,6 +47,7 @@ obj-$(CONFIG_OMAP_USB_PHY) += usb/phy/ obj-$(CONFIG_SPL_SATA_SUPPORT) += block/ obj-$(CONFIG_SPL_USB_HOST_SUPPORT) += block/ obj-$(CONFIG_SPL_MMC_SUPPORT) += block/ +obj-$(CONFIG_SPL_GENERIC_PHY) += phy/ endif ifdef CONFIG_TPL_BUILD diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig new file mode 100644 index 0000000..b6fed9e --- /dev/null +++ b/drivers/phy/Kconfig @@ -0,0 +1,22 @@ + +menu "PHY Subsystem" + +config GENERIC_PHY + bool "PHY Core" + depends on DM + help + Generic PHY support. + + This framework is designed to provide a generic interface for PHY + devices. + +config SPL_GENERIC_PHY + bool "PHY Core in SPL" + depends on DM + help + Generic PHY support in SPL. + + This framework is designed to provide a generic interface for PHY + devices. + +endmenu diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile new file mode 100644 index 0000000..ccd15ed --- /dev/null +++ b/drivers/phy/Makefile @@ -0,0 +1,5 @@ +obj-$(CONFIG_$(SPL_)GENERIC_PHY) += phy-uclass.o + +ifeq ($(CONFIG_SPL_BUILD)$(CONFIG_TPL_BUILD),) +obj-y += marvell/ +endif diff --git a/drivers/phy/phy-uclass.c b/drivers/phy/phy-uclass.c new file mode 100644 index 0000000..4d1584d --- /dev/null +++ b/drivers/phy/phy-uclass.c @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/ + * Written by Jean-Jacques Hiblot + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include + +#define get_ops(dev) ((struct generic_phy_ops *)(dev)->driver->ops) + +#define generic_phy_to_dev(x) ((struct udevice *)(x)) +#define dev_to_generic_phy(x) ((struct generic_phy *)(x)) + +struct generic_phy *dm_generic_phy_get(struct udevice *dev, const char *string) +{ + struct udevice *generic_phy_dev; + + int rc = uclass_get_device_by_phandle(UCLASS_PHY, dev, + string, &generic_phy_dev); + if (rc) { + error("unable to find generic_phy device %d\n", rc); + return ERR_PTR(rc); + } + return dev_to_generic_phy(generic_phy_dev); +} + +int generic_phy_init(struct generic_phy *generic_phy) +{ + struct udevice *dev = generic_phy_to_dev(generic_phy); + struct generic_phy_ops *ops = get_ops(dev); + + return (ops && ops->init) ? ops->init(dev) : 0; +} + +int generic_phy_reset(struct generic_phy *generic_phy) +{ + struct udevice *dev = generic_phy_to_dev(generic_phy); + struct generic_phy_ops *ops = get_ops(dev); + + return (ops && ops->reset) ? ops->reset(dev) : 0; +} + +int generic_phy_exit(struct generic_phy *generic_phy) +{ + struct udevice *dev = generic_phy_to_dev(generic_phy); + struct generic_phy_ops *ops = get_ops(dev); + + return (ops && ops->exit) ? ops->exit(dev) : 0; +} + +int generic_phy_power_on(struct generic_phy *generic_phy) +{ + struct udevice *dev = generic_phy_to_dev(generic_phy); + struct generic_phy_ops *ops = get_ops(dev); + + return (ops && ops->power_on) ? ops->power_on(dev) : 0; +} + +int generic_phy_power_off(struct generic_phy *generic_phy) +{ + struct udevice *dev = generic_phy_to_dev(generic_phy); + struct generic_phy_ops *ops = get_ops(dev); + + return (ops && ops->power_off) ? ops->power_off(dev) : 0; +} + + + +UCLASS_DRIVER(simple_generic_phy) = { + .id = UCLASS_PHY, + .name = "generic_phy", +}; diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 8c92d0b..9d34a32 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -83,6 +83,7 @@ enum uclass_id { UCLASS_VIDEO, /* Video or LCD device */ UCLASS_VIDEO_BRIDGE, /* Video bridge, e.g. DisplayPort to LVDS */ UCLASS_VIDEO_CONSOLE, /* Text console driver for video device */ + UCLASS_PHY, /* generic PHY device */ UCLASS_COUNT, UCLASS_INVALID = -1, diff --git a/include/generic-phy.h b/include/generic-phy.h new file mode 100644 index 0000000..f02e9ce --- /dev/null +++ b/include/generic-phy.h @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/ + * Written by Jean-Jacques Hiblot + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __GENERIC_PHY_H +#define __GENERIC_PHY_H + +struct generic_phy; +/* + * struct generic_phy_ops - set of function pointers for phy operations + * @init: operation to be performed for initializing phy + * @exit: operation to be performed while exiting + * @power_on: powering on the phy + * @power_off: powering off the phy + */ +struct generic_phy_ops { + int (*init)(struct udevice *phy); + int (*exit)(struct udevice *phy); + int (*reset)(struct udevice *phy); + int (*power_on)(struct udevice *phy); + int (*power_off)(struct udevice *phy); +}; + + +int generic_phy_init(struct generic_phy *phy); +int generic_phy_reset(struct generic_phy *phy); +int generic_phy_exit(struct generic_phy *phy); +int generic_phy_power_on(struct generic_phy *phy); +int generic_phy_power_off(struct generic_phy *phy); + +struct generic_phy *dm_generic_phy_get(struct udevice *dev, const char *string); + +#endif /*__GENERIC_PHY_H */ -- 1.9.1