usb: ulpi: Remove unused omap-ulpi-viewport driver

The last platform to enable this driver was removed in 2019. Remove this
unused code and documentation now.

Signed-off-by: Tom Rini <trini@konsulko.com>

1 files changed, 0 insertions, 71 deletions

diff --git a/drivers/usb/ulpi/omap-ulpi-viewport.c b/drivers/usb/ulpi/omap-ulpi-viewport.c
deleted file mode 100644
index 6f0c3eb154e..00000000000
--- a/drivers/usb/ulpi/omap-ulpi-viewport.c
+++ /dev/null
@@ -1,71 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * OMAP ulpi viewport support
- * Based on drivers/usb/ulpi/ulpi-viewport.c
- *
- * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com
- * Author: Govindraj R <govindraj.raja@ti.com>
- */
-
-#include <log.h>
-#include <asm/io.h>
-#include <linux/delay.h>
-#include <usb/ulpi.h>
-
-#define OMAP_ULPI_WR_OPSEL	(2 << 22)
-#define OMAP_ULPI_RD_OPSEL	(3 << 22)
-#define OMAP_ULPI_START		(1 << 31)
-
-/*
- * Wait for having ulpi in done state
- */
-static int ulpi_wait(struct ulpi_viewport *ulpi_vp, u32 mask)
-{
-	int timeout = CFG_USB_ULPI_TIMEOUT;
-
-	while (--timeout) {
-		if (!(readl(ulpi_vp->viewport_addr) & mask))
-			return 0;
-
-		udelay(1);
-	}
-
-	return ULPI_ERROR;
-}
-
-/*
- * Issue a ULPI read/write request
- */
-static int ulpi_request(struct ulpi_viewport *ulpi_vp, u32 value)
-{
-	int err;
-
-	writel(value, ulpi_vp->viewport_addr);
-
-	err = ulpi_wait(ulpi_vp, OMAP_ULPI_START);
-	if (err)
-		debug("ULPI request timed out\n");
-
-	return err;
-}
-
-int ulpi_write(struct ulpi_viewport *ulpi_vp, u8 *reg, u32 value)
-{
-	u32 val = OMAP_ULPI_START | (((ulpi_vp->port_num + 1) & 0xf) << 24) |
-			OMAP_ULPI_WR_OPSEL | ((u32)reg << 16) | (value & 0xff);
-
-	return ulpi_request(ulpi_vp, val);
-}
-
-u32 ulpi_read(struct ulpi_viewport *ulpi_vp, u8 *reg)
-{
-	int err;
-	u32 val = OMAP_ULPI_START | (((ulpi_vp->port_num + 1) & 0xf) << 24) |
-			 OMAP_ULPI_RD_OPSEL | ((u32)reg << 16);
-
-	err = ulpi_request(ulpi_vp, val);
-	if (err)
-		return err;
-
-	return readl(ulpi_vp->viewport_addr) & 0xff;
-}