mirror of
https://github.com/torvalds/linux.git
synced 2024-11-05 03:21:32 +00:00
dd0cdd8882
Move omap1 FS USB platform init code into mach-omap1/usb.c Signed-off-by: Tony Lindgren <tony@atomide.com>
144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/*
|
|
* arch/arm/plat-omap/usb.c -- platform level USB initialization
|
|
*
|
|
* Copyright (C) 2004 Texas Instruments, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#undef DEBUG
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <plat/usb.h>
|
|
#include <plat/board.h>
|
|
|
|
#ifdef CONFIG_ARCH_OMAP_OTG
|
|
|
|
void __init
|
|
omap_otg_init(struct omap_usb_config *config)
|
|
{
|
|
u32 syscon;
|
|
int status;
|
|
int alt_pingroup = 0;
|
|
|
|
/* NOTE: no bus or clock setup (yet?) */
|
|
|
|
syscon = omap_readl(OTG_SYSCON_1) & 0xffff;
|
|
if (!(syscon & OTG_RESET_DONE))
|
|
pr_debug("USB resets not complete?\n");
|
|
|
|
//omap_writew(0, OTG_IRQ_EN);
|
|
|
|
/* pin muxing and transceiver pinouts */
|
|
if (config->pins[0] > 2) /* alt pingroup 2 */
|
|
alt_pingroup = 1;
|
|
syscon |= config->usb0_init(config->pins[0], is_usb0_device(config));
|
|
syscon |= config->usb1_init(config->pins[1]);
|
|
syscon |= config->usb2_init(config->pins[2], alt_pingroup);
|
|
pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
|
|
omap_writel(syscon, OTG_SYSCON_1);
|
|
|
|
syscon = config->hmc_mode;
|
|
syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */;
|
|
#ifdef CONFIG_USB_OTG
|
|
if (config->otg)
|
|
syscon |= OTG_EN;
|
|
#endif
|
|
if (cpu_class_is_omap1())
|
|
pr_debug("USB_TRANSCEIVER_CTRL = %03x\n",
|
|
omap_readl(USB_TRANSCEIVER_CTRL));
|
|
pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2));
|
|
omap_writel(syscon, OTG_SYSCON_2);
|
|
|
|
printk("USB: hmc %d", config->hmc_mode);
|
|
if (!alt_pingroup)
|
|
printk(", usb2 alt %d wires", config->pins[2]);
|
|
else if (config->pins[0])
|
|
printk(", usb0 %d wires%s", config->pins[0],
|
|
is_usb0_device(config) ? " (dev)" : "");
|
|
if (config->pins[1])
|
|
printk(", usb1 %d wires", config->pins[1]);
|
|
if (!alt_pingroup && config->pins[2])
|
|
printk(", usb2 %d wires", config->pins[2]);
|
|
if (config->otg)
|
|
printk(", Mini-AB on usb%d", config->otg - 1);
|
|
printk("\n");
|
|
|
|
if (cpu_class_is_omap1()) {
|
|
u16 w;
|
|
|
|
/* leave USB clocks/controllers off until needed */
|
|
w = omap_readw(ULPD_SOFT_REQ);
|
|
w &= ~SOFT_USB_CLK_REQ;
|
|
omap_writew(w, ULPD_SOFT_REQ);
|
|
|
|
w = omap_readw(ULPD_CLOCK_CTRL);
|
|
w &= ~USB_MCLK_EN;
|
|
w |= DIS_USB_PVCI_CLK;
|
|
omap_writew(w, ULPD_CLOCK_CTRL);
|
|
}
|
|
syscon = omap_readl(OTG_SYSCON_1);
|
|
syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;
|
|
|
|
#ifdef CONFIG_USB_GADGET_OMAP
|
|
if (config->otg || config->register_dev) {
|
|
struct platform_device *udc_device = config->udc_device;
|
|
|
|
syscon &= ~DEV_IDLE_EN;
|
|
udc_device->dev.platform_data = config;
|
|
status = platform_device_register(udc_device);
|
|
if (status)
|
|
pr_debug("can't register UDC device, %d\n", status);
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
|
|
if (config->otg || config->register_host) {
|
|
struct platform_device *ohci_device = config->ohci_device;
|
|
|
|
syscon &= ~HST_IDLE_EN;
|
|
ohci_device->dev.platform_data = config;
|
|
status = platform_device_register(ohci_device);
|
|
if (status)
|
|
pr_debug("can't register OHCI device, %d\n", status);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_USB_OTG
|
|
if (config->otg) {
|
|
struct platform_device *otg_device = config->otg_device;
|
|
|
|
syscon &= ~OTG_IDLE_EN;
|
|
otg_device->dev.platform_data = config;
|
|
status = platform_device_register(otg_device);
|
|
if (status)
|
|
pr_debug("can't register OTG device, %d\n", status);
|
|
}
|
|
#endif
|
|
pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
|
|
omap_writel(syscon, OTG_SYSCON_1);
|
|
|
|
status = 0;
|
|
}
|
|
|
|
#else
|
|
void omap_otg_init(struct omap_usb_config *config) {}
|
|
#endif
|