| // SPDX-License-Identifier: (GPL-2.0+ OR MIT) |
| /* |
| * Copyright (c) 2019 Amlogic, Inc. All rights reserved. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/clk.h> |
| #include <linux/device.h> |
| #include <linux/err.h> |
| #include <linux/io.h> |
| #include <linux/of.h> |
| #include <linux/of_address.h> |
| #include <linux/amlogic/usb-v2.h> |
| #include "../phy/phy-aml-new-usb-v2.h" |
| |
| int amlogic_crg_drd_usbphy_reset(struct amlogic_usb_v2 *phy) |
| { |
| static int init_count; |
| |
| if (!init_count) { |
| init_count++; |
| if (phy->usb_reset_bit == 2) |
| writel((readl(phy->reset_regs) | |
| (0x1 << phy->usb_reset_bit)), phy->reset_regs); |
| else |
| writel((0x1 << phy->usb_reset_bit), phy->reset_regs); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(amlogic_crg_drd_usbphy_reset); |
| |
| int amlogic_crg_drd_usbphy_reset_phycfg(struct amlogic_usb_v2 *phy, int cnt) |
| { |
| u32 val, i = 0; |
| u32 temp = 0; |
| size_t mask = 0; |
| |
| mask = (size_t)phy->reset_regs & 0xf; |
| |
| for (i = 0; i < cnt; i++) |
| temp = temp | (1 << phy->phy_reset_level_bit[i]); |
| |
| /* set usb phy to low power mode */ |
| val = readl((void __iomem *) |
| ((unsigned long)phy->reset_regs + (phy->reset_level - mask))); |
| writel((val & (~temp)), (void __iomem *) |
| ((unsigned long)phy->reset_regs + (phy->reset_level - mask))); |
| |
| usleep_range(99, 100); |
| |
| val = readl((void __iomem *) |
| ((unsigned long)phy->reset_regs + (phy->reset_level - mask))); |
| writel((val | temp), (void __iomem *) |
| ((unsigned long)phy->reset_regs + (phy->reset_level - mask))); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(amlogic_crg_drd_usbphy_reset_phycfg); |