colin/u-boot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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>
This commit is contained in:
Tom Rini
2025-03-14 19:27:35 -06:00
committed by Marek Vasut
parent 068f83499c
commit cd9c8814b0
4 changed files with 0 additions and 104 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
doc/README.omap-ulpi-viewport
View File

@@ -1,27 +0,0 @@
Reference code ""drivers/usb/ulpi/omap-ulpi-viewport.c"
Contains the ulpi read write api's to perform
any ulpi phy port access on omap platform.
On omap ehci reg map contains INSNREG05_ULPI
register which offers the ulpi phy access so
any ulpi phy commands should be passsed using this
register.
omap-ulpi-viewport.c is a low level function
implementation of "drivers/usb/ulpi/ulpi.c"
To enable and use omap-ulpi-viewport.c
we require CONFIG_USB_ULPI_VIEWPORT_OMAP and
CONFIG_USB_ULPI be enabled in config file.
Any ulpi ops request can be done with ulpi.c
and soc specific binding and usage is done with
omap-ulpi-viewport implementation.
Ex: scenario:
omap-ehci driver code requests for ulpi phy reset if
ehci is used in phy mode, which will call ulpi phy reset
the ulpi phy reset does ulpi_read/write from viewport
implementation which will do ulpi reset using the
INSNREG05_ULPI register.

5
drivers/usb/ulpi/Kconfig
View File

@@ -14,11 +14,6 @@ config USB_ULPI_VIEWPORT
Support generic ULPI Viewport implementation that is used on Support generic ULPI Viewport implementation that is used on
some Tegra and Snapdragon devices. some Tegra and Snapdragon devices.
config USB_ULPI_VIEWPORT_OMAP
bool "OMAP ULPI Viewport"
help
Support ULPI Viewport implementation that is used on OMAP devices.
endchoice endchoice
config USB_ULPI config USB_ULPI

1
drivers/usb/ulpi/Makefile
View File

@@ -4,4 +4,3 @@
obj-$(CONFIG_USB_ULPI) += ulpi.o obj-$(CONFIG_USB_ULPI) += ulpi.o
obj-$(CONFIG_USB_ULPI_VIEWPORT) += ulpi-viewport.o obj-$(CONFIG_USB_ULPI_VIEWPORT) += ulpi-viewport.o
obj-$(CONFIG_USB_ULPI_VIEWPORT_OMAP) += omap-ulpi-viewport.o

71
drivers/usb/ulpi/omap-ulpi-viewport.c
View File

@@ -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;
}