Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / usb / ulpi / omap-ulpi-viewport.c

diff --git a/qemu/roms/u-boot/drivers/usb/ulpi/omap-ulpi-viewport.c b/qemu/roms/u-boot/drivers/usb/ulpi/omap-ulpi-viewport.c
new file mode 100644 (file)
index 0000000..4db7fa4
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/usb/ulpi/omap-ulpi-viewport.c
@@ -0,0 +1,81 @@
+/*
+ * OMAP ulpi viewport support
+ * Based on drivers/usb/ulpi/ulpi-viewport.c
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
+ * Author: Govindraj R <govindraj.raja@ti.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2  of
+ * the License as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <common.h>
+#include <asm/io.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 = CONFIG_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;
+}