usb/ulpi/ulpi-viewport.c

1 // SPDX-License-Identifier: GPL-2.0
9  * Based on:
27  * Wait for the ULPI request to complete
29  * @ulpi_viewport	- the address of the viewport
30  * @mask		- expected value to wait for
32  * returns 0 on mask match, ULPI_ERROR on time out.
38 	/* Wait for the bits in mask to become zero. */  in ulpi_wait()
39 	while (--timeout) {  in ulpi_wait()
40 		if ((readl(ulpi_vp->viewport_addr) & mask) == 0)  in ulpi_wait()
52  * returns 0 on success.
58 	if (readl(ulpi_vp->viewport_addr) & ULPI_SS)  in ulpi_wakeup()
61 	writel(ULPI_WU, ulpi_vp->viewport_addr);  in ulpi_wakeup()
71  * Issue a ULPI read/write request
73  * @value - the ULPI request
83 	writel(value, ulpi_vp->viewport_addr);  in ulpi_request()
97 	val |= (ulpi_vp->port_num & 0x7) << 24;  in ulpi_write()
106 	val |= (ulpi_vp->port_num & 0x7) << 24;  in ulpi_read()
111 	return (readl(ulpi_vp->viewport_addr) >> 8) & 0xff;  in ulpi_read()