diff options
Diffstat (limited to 'drivers/usb/ulpi/omap-ulpi-viewport.c')
-rw-r--r-- | drivers/usb/ulpi/omap-ulpi-viewport.c | 71 |
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; -} |