summaryrefslogtreecommitdiff
path: root/drivers/usb/otg/ulpi_viewport.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/otg/ulpi_viewport.c')
-rw-r--r--drivers/usb/otg/ulpi_viewport.c80
1 files changed, 0 insertions, 80 deletions
diff --git a/drivers/usb/otg/ulpi_viewport.c b/drivers/usb/otg/ulpi_viewport.c
deleted file mode 100644
index c5ba7e5..0000000
--- a/drivers/usb/otg/ulpi_viewport.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (C) 2011 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/usb.h>
-#include <linux/io.h>
-#include <linux/usb/otg.h>
-#include <linux/usb/ulpi.h>
-
-#define ULPI_VIEW_WAKEUP (1 << 31)
-#define ULPI_VIEW_RUN (1 << 30)
-#define ULPI_VIEW_WRITE (1 << 29)
-#define ULPI_VIEW_READ (0 << 29)
-#define ULPI_VIEW_ADDR(x) (((x) & 0xff) << 16)
-#define ULPI_VIEW_DATA_READ(x) (((x) >> 8) & 0xff)
-#define ULPI_VIEW_DATA_WRITE(x) ((x) & 0xff)
-
-static int ulpi_viewport_wait(void __iomem *view, u32 mask)
-{
- unsigned long usec = 2000;
-
- while (usec--) {
- if (!(readl(view) & mask))
- return 0;
-
- udelay(1);
- };
-
- return -ETIMEDOUT;
-}
-
-static int ulpi_viewport_read(struct usb_phy *otg, u32 reg)
-{
- int ret;
- void __iomem *view = otg->io_priv;
-
- writel(ULPI_VIEW_WAKEUP | ULPI_VIEW_WRITE, view);
- ret = ulpi_viewport_wait(view, ULPI_VIEW_WAKEUP);
- if (ret)
- return ret;
-
- writel(ULPI_VIEW_RUN | ULPI_VIEW_READ | ULPI_VIEW_ADDR(reg), view);
- ret = ulpi_viewport_wait(view, ULPI_VIEW_RUN);
- if (ret)
- return ret;
-
- return ULPI_VIEW_DATA_READ(readl(view));
-}
-
-static int ulpi_viewport_write(struct usb_phy *otg, u32 val, u32 reg)
-{
- int ret;
- void __iomem *view = otg->io_priv;
-
- writel(ULPI_VIEW_WAKEUP | ULPI_VIEW_WRITE, view);
- ret = ulpi_viewport_wait(view, ULPI_VIEW_WAKEUP);
- if (ret)
- return ret;
-
- writel(ULPI_VIEW_RUN | ULPI_VIEW_WRITE | ULPI_VIEW_DATA_WRITE(val) |
- ULPI_VIEW_ADDR(reg), view);
-
- return ulpi_viewport_wait(view, ULPI_VIEW_RUN);
-}
-
-struct usb_phy_io_ops ulpi_viewport_access_ops = {
- .read = ulpi_viewport_read,
- .write = ulpi_viewport_write,
-};