1 // SPDX-License-Identifier: GPL-2.0+
2 /* Copyright (C) 2019 Stephan Gerhold */
3
4 #include <dm.h>
5 #include <generic-phy.h>
6 #include <linux/bitops.h>
7 #include <power/pmic.h>
8 #include <power/ab8500.h>
9
10 #define AB8500_USB_PHY_CTRL_REG AB8500_USB(0x8A)
11 #define AB8500_BIT_PHY_CTRL_HOST_EN BIT(0)
12 #define AB8500_BIT_PHY_CTRL_DEVICE_EN BIT(1)
13 #define AB8500_USB_PHY_CTRL_MASK (AB8500_BIT_PHY_CTRL_HOST_EN |\
14 AB8500_BIT_PHY_CTRL_DEVICE_EN)
15
ab8500_usb_phy_power_on(struct phy * phy)16 static int ab8500_usb_phy_power_on(struct phy *phy)
17 {
18 struct udevice *dev = phy->dev;
19 uint set = AB8500_BIT_PHY_CTRL_DEVICE_EN;
20
21 if (IS_ENABLED(CONFIG_USB_MUSB_HOST))
22 set = AB8500_BIT_PHY_CTRL_HOST_EN;
23
24 return pmic_clrsetbits(dev->parent, AB8500_USB_PHY_CTRL_REG,
25 AB8500_USB_PHY_CTRL_MASK, set);
26 }
27
ab8500_usb_phy_power_off(struct phy * phy)28 static int ab8500_usb_phy_power_off(struct phy *phy)
29 {
30 struct udevice *dev = phy->dev;
31
32 return pmic_clrsetbits(dev->parent, AB8500_USB_PHY_CTRL_REG,
33 AB8500_USB_PHY_CTRL_MASK, 0);
34 }
35
36 struct phy_ops ab8500_usb_phy_ops = {
37 .power_on = ab8500_usb_phy_power_on,
38 .power_off = ab8500_usb_phy_power_off,
39 };
40
41 static const struct udevice_id ab8500_usb_phy_ids[] = {
42 { .compatible = "stericsson,ab8500-usb" },
43 { }
44 };
45
46 U_BOOT_DRIVER(ab8500_usb_phy) = {
47 .name = "ab8500_usb_phy",
48 .id = UCLASS_PHY,
49 .of_match = ab8500_usb_phy_ids,
50 .ops = &ab8500_usb_phy_ops,
51 };
52