diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/drivers/usb/ulpi/omap-ulpi-viewport.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/drivers/usb/ulpi/omap-ulpi-viewport.c')
-rw-r--r-- | qemu/roms/u-boot/drivers/usb/ulpi/omap-ulpi-viewport.c | 81 |
1 files changed, 81 insertions, 0 deletions
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 index 000000000..4db7fa43c --- /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; +} |