mirror of
https://github.com/AsahiLinux/u-boot
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6e7df1d151
At this point, the remaining places where we have a symbol that is defined as CONFIG_... are in fairly odd locations. While as much dead code has been removed as possible, some of these locations are simply less obvious at first. In other cases, this code is used, but was defined in such a way as to have been missed by earlier checks. Perform a rename of all such remaining symbols to be CFG_... rather than CONFIG_... Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2011 Jana Rapava <fermata7@gmail.com>
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* Copyright (C) 2011 CompuLab, Ltd. <www.compulab.co.il>
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*
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* Authors: Jana Rapava <fermata7@gmail.com>
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* Igor Grinberg <grinberg@compulab.co.il>
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*
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* Based on:
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* linux/drivers/usb/otg/ulpi_viewport.c
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*
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* Original Copyright follow:
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* Copyright (C) 2011 Google, Inc.
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <linux/delay.h>
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#include <usb/ulpi.h>
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/* ULPI viewport control bits */
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#define ULPI_SS (1 << 27)
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#define ULPI_RWCTRL (1 << 29)
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#define ULPI_RWRUN (1 << 30)
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#define ULPI_WU (1 << 31)
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/*
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* Wait for the ULPI request to complete
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*
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* @ulpi_viewport - the address of the viewport
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* @mask - expected value to wait for
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*
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* returns 0 on mask match, ULPI_ERROR on time out.
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*/
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static int ulpi_wait(struct ulpi_viewport *ulpi_vp, u32 mask)
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{
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int timeout = CFG_USB_ULPI_TIMEOUT;
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/* Wait for the bits in mask to become zero. */
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while (--timeout) {
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if ((readl(ulpi_vp->viewport_addr) & mask) == 0)
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return 0;
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udelay(1);
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}
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return ULPI_ERROR;
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}
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/*
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* Wake the ULPI PHY up for communication
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*
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* returns 0 on success.
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*/
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static int ulpi_wakeup(struct ulpi_viewport *ulpi_vp)
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{
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int err;
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if (readl(ulpi_vp->viewport_addr) & ULPI_SS)
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return 0; /* already awake */
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writel(ULPI_WU, ulpi_vp->viewport_addr);
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err = ulpi_wait(ulpi_vp, ULPI_WU);
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if (err)
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printf("ULPI wakeup timed out\n");
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return err;
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}
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/*
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* Issue a ULPI read/write request
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*
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* @value - the ULPI request
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*/
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static int ulpi_request(struct ulpi_viewport *ulpi_vp, u32 value)
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{
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int err;
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err = ulpi_wakeup(ulpi_vp);
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if (err)
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return err;
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writel(value, ulpi_vp->viewport_addr);
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err = ulpi_wait(ulpi_vp, ULPI_RWRUN);
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if (err)
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printf("ULPI request timed out\n");
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return err;
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}
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int ulpi_write(struct ulpi_viewport *ulpi_vp, u8 *reg, u32 value)
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{
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u32 addr = (uintptr_t)reg & 0xFF;
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u32 val = ULPI_RWRUN | ULPI_RWCTRL | addr << 16 | (value & 0xff);
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val |= (ulpi_vp->port_num & 0x7) << 24;
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return ulpi_request(ulpi_vp, val);
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}
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u32 ulpi_read(struct ulpi_viewport *ulpi_vp, u8 *reg)
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{
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int err;
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u32 val = ULPI_RWRUN | ((uintptr_t)reg & 0xFF) << 16;
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val |= (ulpi_vp->port_num & 0x7) << 24;
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err = ulpi_request(ulpi_vp, val);
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if (err)
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return err;
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return (readl(ulpi_vp->viewport_addr) >> 8) & 0xff;
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}
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