usb/ulpi/omap-ulpi-viewport.c

1 // SPDX-License-Identifier: GPL-2.0
3  * OMAP ulpi viewport support
4  * Based on drivers/usb/ulpi/ulpi-viewport.c
6  * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
12 #include <usb/ulpi.h>
19  * Wait for having ulpi in done state
25 	while (--timeout) {  in ulpi_wait()
26 		if (!(readl(ulpi_vp->viewport_addr) & mask))  in ulpi_wait()
27 			return 0;  in ulpi_wait()
36  * Issue a ULPI read/write request
42 	writel(value, ulpi_vp->viewport_addr);  in ulpi_request()
46 		debug("ULPI request timed out\n");  in ulpi_request()
53 	u32 val = OMAP_ULPI_START | (((ulpi_vp->port_num + 1) & 0xf) << 24) |  in ulpi_write()
54 			OMAP_ULPI_WR_OPSEL | ((u32)reg << 16) | (value & 0xff);  in ulpi_write()
62 	u32 val = OMAP_ULPI_START | (((ulpi_vp->port_num + 1) & 0xf) << 24) |  in ulpi_read()
69 	return readl(ulpi_vp->viewport_addr) & 0xff;  in ulpi_read()