mirror of https://gitee.com/openkylin/linux.git
360 lines
7.7 KiB
C
360 lines
7.7 KiB
C
/*
|
|
* Platform level USB initialization for FS USB OTG controller on omap1 and 24xx
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/err.h>
|
|
|
|
#include <asm/irq.h>
|
|
|
|
#include <plat/usb.h>
|
|
#include <plat/board.h>
|
|
|
|
#include "control.h"
|
|
#include "mux.h"
|
|
|
|
#define INT_USB_IRQ_GEN INT_24XX_USB_IRQ_GEN
|
|
#define INT_USB_IRQ_NISO INT_24XX_USB_IRQ_NISO
|
|
#define INT_USB_IRQ_ISO INT_24XX_USB_IRQ_ISO
|
|
#define INT_USB_IRQ_HGEN INT_24XX_USB_IRQ_HGEN
|
|
#define INT_USB_IRQ_OTG INT_24XX_USB_IRQ_OTG
|
|
|
|
#if defined(CONFIG_ARCH_OMAP2)
|
|
|
|
#ifdef CONFIG_USB_GADGET_OMAP
|
|
|
|
static struct resource udc_resources[] = {
|
|
/* order is significant! */
|
|
{ /* registers */
|
|
.start = UDC_BASE,
|
|
.end = UDC_BASE + 0xff,
|
|
.flags = IORESOURCE_MEM,
|
|
}, { /* general IRQ */
|
|
.start = INT_USB_IRQ_GEN,
|
|
.flags = IORESOURCE_IRQ,
|
|
}, { /* PIO IRQ */
|
|
.start = INT_USB_IRQ_NISO,
|
|
.flags = IORESOURCE_IRQ,
|
|
}, { /* SOF IRQ */
|
|
.start = INT_USB_IRQ_ISO,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static u64 udc_dmamask = ~(u32)0;
|
|
|
|
static struct platform_device udc_device = {
|
|
.name = "omap_udc",
|
|
.id = -1,
|
|
.dev = {
|
|
.dma_mask = &udc_dmamask,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.num_resources = ARRAY_SIZE(udc_resources),
|
|
.resource = udc_resources,
|
|
};
|
|
|
|
static inline void udc_device_init(struct omap_usb_config *pdata)
|
|
{
|
|
pdata->udc_device = &udc_device;
|
|
}
|
|
|
|
#else
|
|
|
|
static inline void udc_device_init(struct omap_usb_config *pdata)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
|
|
|
|
/* The dmamask must be set for OHCI to work */
|
|
static u64 ohci_dmamask = ~(u32)0;
|
|
|
|
static struct resource ohci_resources[] = {
|
|
{
|
|
.start = OMAP_OHCI_BASE,
|
|
.end = OMAP_OHCI_BASE + 0xff,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
{
|
|
.start = INT_USB_IRQ_HGEN,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device ohci_device = {
|
|
.name = "ohci",
|
|
.id = -1,
|
|
.dev = {
|
|
.dma_mask = &ohci_dmamask,
|
|
.coherent_dma_mask = 0xffffffff,
|
|
},
|
|
.num_resources = ARRAY_SIZE(ohci_resources),
|
|
.resource = ohci_resources,
|
|
};
|
|
|
|
static inline void ohci_device_init(struct omap_usb_config *pdata)
|
|
{
|
|
pdata->ohci_device = &ohci_device;
|
|
}
|
|
|
|
#else
|
|
|
|
static inline void ohci_device_init(struct omap_usb_config *pdata)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
|
|
|
|
static struct resource otg_resources[] = {
|
|
/* order is significant! */
|
|
{
|
|
.start = OTG_BASE,
|
|
.end = OTG_BASE + 0xff,
|
|
.flags = IORESOURCE_MEM,
|
|
}, {
|
|
.start = INT_USB_IRQ_OTG,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device otg_device = {
|
|
.name = "omap_otg",
|
|
.id = -1,
|
|
.num_resources = ARRAY_SIZE(otg_resources),
|
|
.resource = otg_resources,
|
|
};
|
|
|
|
static inline void otg_device_init(struct omap_usb_config *pdata)
|
|
{
|
|
pdata->otg_device = &otg_device;
|
|
}
|
|
|
|
#else
|
|
|
|
static inline void otg_device_init(struct omap_usb_config *pdata)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
static void omap2_usb_devconf_clear(u8 port, u32 mask)
|
|
{
|
|
u32 r;
|
|
|
|
r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
|
|
r &= ~USBTXWRMODEI(port, mask);
|
|
omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
|
|
}
|
|
|
|
static void omap2_usb_devconf_set(u8 port, u32 mask)
|
|
{
|
|
u32 r;
|
|
|
|
r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
|
|
r |= USBTXWRMODEI(port, mask);
|
|
omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
|
|
}
|
|
|
|
static void omap2_usb2_disable_5pinbitll(void)
|
|
{
|
|
u32 r;
|
|
|
|
r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
|
|
r &= ~(USBTXWRMODEI(2, USB_BIDIR_TLL) | USBT2TLL5PI);
|
|
omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
|
|
}
|
|
|
|
static void omap2_usb2_enable_5pinunitll(void)
|
|
{
|
|
u32 r;
|
|
|
|
r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
|
|
r |= USBTXWRMODEI(2, USB_UNIDIR_TLL) | USBT2TLL5PI;
|
|
omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
|
|
}
|
|
|
|
static u32 __init omap2_usb0_init(unsigned nwires, unsigned is_device)
|
|
{
|
|
u32 syscon1 = 0;
|
|
|
|
omap2_usb_devconf_clear(0, USB_BIDIR_TLL);
|
|
|
|
if (nwires == 0)
|
|
return 0;
|
|
|
|
if (is_device)
|
|
omap_mux_init_signal("usb0_puen", 0);
|
|
|
|
omap_mux_init_signal("usb0_dat", 0);
|
|
omap_mux_init_signal("usb0_txen", 0);
|
|
omap_mux_init_signal("usb0_se0", 0);
|
|
if (nwires != 3)
|
|
omap_mux_init_signal("usb0_rcv", 0);
|
|
|
|
switch (nwires) {
|
|
case 3:
|
|
syscon1 = 2;
|
|
omap2_usb_devconf_set(0, USB_BIDIR);
|
|
break;
|
|
case 4:
|
|
syscon1 = 1;
|
|
omap2_usb_devconf_set(0, USB_BIDIR);
|
|
break;
|
|
case 6:
|
|
syscon1 = 3;
|
|
omap_mux_init_signal("usb0_vp", 0);
|
|
omap_mux_init_signal("usb0_vm", 0);
|
|
omap2_usb_devconf_set(0, USB_UNIDIR);
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
|
|
0, nwires);
|
|
}
|
|
|
|
return syscon1 << 16;
|
|
}
|
|
|
|
static u32 __init omap2_usb1_init(unsigned nwires)
|
|
{
|
|
u32 syscon1 = 0;
|
|
|
|
omap2_usb_devconf_clear(1, USB_BIDIR_TLL);
|
|
|
|
if (nwires == 0)
|
|
return 0;
|
|
|
|
/* NOTE: board-specific code must set up pin muxing for usb1,
|
|
* since each signal could come out on either of two balls.
|
|
*/
|
|
|
|
switch (nwires) {
|
|
case 2:
|
|
/* NOTE: board-specific code must override this setting if
|
|
* this TLL link is not using DP/DM
|
|
*/
|
|
syscon1 = 1;
|
|
omap2_usb_devconf_set(1, USB_BIDIR_TLL);
|
|
break;
|
|
case 3:
|
|
syscon1 = 2;
|
|
omap2_usb_devconf_set(1, USB_BIDIR);
|
|
break;
|
|
case 4:
|
|
syscon1 = 1;
|
|
omap2_usb_devconf_set(1, USB_BIDIR);
|
|
break;
|
|
case 6:
|
|
default:
|
|
printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
|
|
1, nwires);
|
|
}
|
|
|
|
return syscon1 << 20;
|
|
}
|
|
|
|
static u32 __init omap2_usb2_init(unsigned nwires, unsigned alt_pingroup)
|
|
{
|
|
u32 syscon1 = 0;
|
|
|
|
omap2_usb2_disable_5pinbitll();
|
|
alt_pingroup = 0;
|
|
|
|
/* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
|
|
if (alt_pingroup || nwires == 0)
|
|
return 0;
|
|
|
|
omap_mux_init_signal("usb2_dat", 0);
|
|
omap_mux_init_signal("usb2_se0", 0);
|
|
if (nwires > 2)
|
|
omap_mux_init_signal("usb2_txen", 0);
|
|
if (nwires > 3)
|
|
omap_mux_init_signal("usb2_rcv", 0);
|
|
|
|
switch (nwires) {
|
|
case 2:
|
|
/* NOTE: board-specific code must override this setting if
|
|
* this TLL link is not using DP/DM
|
|
*/
|
|
syscon1 = 1;
|
|
omap2_usb_devconf_set(2, USB_BIDIR_TLL);
|
|
break;
|
|
case 3:
|
|
syscon1 = 2;
|
|
omap2_usb_devconf_set(2, USB_BIDIR);
|
|
break;
|
|
case 4:
|
|
syscon1 = 1;
|
|
omap2_usb_devconf_set(2, USB_BIDIR);
|
|
break;
|
|
case 5:
|
|
/* NOTE: board-specific code must mux this setting depending
|
|
* on TLL link using DP/DM. Something must also
|
|
* set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED}
|
|
* 2420: hdq_sio.usb2_tllse0 or vlynq_rx0.usb2_tllse0
|
|
* 2430: hdq_sio.usb2_tllse0 or sdmmc2_dat0.usb2_tllse0
|
|
*/
|
|
|
|
syscon1 = 3;
|
|
omap2_usb2_enable_5pinunitll();
|
|
break;
|
|
case 6:
|
|
default:
|
|
printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
|
|
2, nwires);
|
|
}
|
|
|
|
return syscon1 << 24;
|
|
}
|
|
|
|
void __init omap2_usbfs_init(struct omap_usb_config *pdata)
|
|
{
|
|
struct clk *ick;
|
|
|
|
if (!cpu_is_omap24xx())
|
|
return;
|
|
|
|
ick = clk_get(NULL, "usb_l4_ick");
|
|
if (IS_ERR(ick))
|
|
return;
|
|
|
|
clk_enable(ick);
|
|
pdata->usb0_init = omap2_usb0_init;
|
|
pdata->usb1_init = omap2_usb1_init;
|
|
pdata->usb2_init = omap2_usb2_init;
|
|
udc_device_init(pdata);
|
|
ohci_device_init(pdata);
|
|
otg_device_init(pdata);
|
|
omap_otg_init(pdata);
|
|
clk_disable(ick);
|
|
clk_put(ick);
|
|
}
|
|
|
|
#endif
|