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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2005-2007 by Texas Instruments
* Some code has been taken from tusb6010.c
* Copyrights for that are attributable to:
* Copyright (C) 2006 Nokia Corporation
* Tony Lindgren <tony@atomide.com>
*
* This file is part of the Inventra Controller Driver for Linux.
*/
#include <common.h>
#include <dm.h>
#include <log.h>
#include <serial.h>
#include <dm/device-internal.h>
#include <dm/device_compat.h>
#include <dm/lists.h>
#include <linux/err.h>
#include <linux/usb/otg.h>
#include <asm/omap_common.h>
#include <asm/omap_musb.h>
#include <twl4030.h>
#include <twl6030.h>
#include "linux-compat.h"
#include "musb_core.h"
#include "omap2430.h"
#include "musb_uboot.h"
static inline void omap2430_low_level_exit(struct musb *musb)
{
u32 l;
/* in any role */
l = musb_readl(musb->mregs, OTG_FORCESTDBY);
l |= ENABLEFORCE; /* enable MSTANDBY */
musb_writel(musb->mregs, OTG_FORCESTDBY, l);
}
static inline void omap2430_low_level_init(struct musb *musb)
{
u32 l;
l = musb_readl(musb->mregs, OTG_FORCESTDBY);
l &= ~ENABLEFORCE; /* disable MSTANDBY */
musb_writel(musb->mregs, OTG_FORCESTDBY, l);
}
static int omap2430_musb_init(struct musb *musb)
{
u32 l;
int status = 0;
unsigned long int start;
struct omap_musb_board_data *data =
(struct omap_musb_board_data *)musb->controller;
/* Reset the controller */
musb_writel(musb->mregs, OTG_SYSCONFIG, SOFTRST);
start = get_timer(0);
while (1) {
l = musb_readl(musb->mregs, OTG_SYSCONFIG);
if ((l & SOFTRST) == 0)
break;
if (get_timer(start) > (CONFIG_SYS_HZ / 1000)) {
dev_err(musb->controller, "MUSB reset is taking too long\n");
return -ENODEV;
}
}
l = musb_readl(musb->mregs, OTG_INTERFSEL);
if (data->interface_type == MUSB_INTERFACE_UTMI) {
/* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
l &= ~ULPI_12PIN; /* Disable ULPI */
l |= UTMI_8BIT; /* Enable UTMI */
} else {
l |= ULPI_12PIN;
}
musb_writel(musb->mregs, OTG_INTERFSEL, l);
pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
"sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
musb_readl(musb->mregs, OTG_REVISION),
musb_readl(musb->mregs, OTG_SYSCONFIG),
musb_readl(musb->mregs, OTG_SYSSTATUS),
musb_readl(musb->mregs, OTG_INTERFSEL),
musb_readl(musb->mregs, OTG_SIMENABLE));
return 0;
err1:
return status;
}
static int omap2430_musb_enable(struct musb *musb)
{
#ifdef CONFIG_TWL4030_USB
if (twl4030_usb_ulpi_init()) {
serial_printf("ERROR: %s Could not initialize PHY\n",
__PRETTY_FUNCTION__);
}
#endif
#ifdef CONFIG_TWL6030_POWER
twl6030_usb_device_settings();
#endif
#ifdef CONFIG_OMAP44XX
u32 *usbotghs_control = (u32 *)((*ctrl)->control_usbotghs_ctrl);
*usbotghs_control = USBOTGHS_CONTROL_AVALID |
USBOTGHS_CONTROL_VBUSVALID | USBOTGHS_CONTROL_IDDIG;
#endif
return 0;
}
static void omap2430_musb_disable(struct musb *musb)
{
}
static int omap2430_musb_exit(struct musb *musb)
{
del_timer_sync(&musb_idle_timer);
omap2430_low_level_exit(musb);
return 0;
}
const struct musb_platform_ops omap2430_ops = {
.init = omap2430_musb_init,
.exit = omap2430_musb_exit,
.enable = omap2430_musb_enable,
.disable = omap2430_musb_disable,
};
#if CONFIG_IS_ENABLED(DM_USB)
struct omap2430_musb_platdata {
void *base;
void *ctrl_mod_base;
struct musb_hdrc_platform_data plat;
struct musb_hdrc_config musb_config;
struct omap_musb_board_data otg_board_data;
};
static int omap2430_musb_of_to_plat(struct udevice *dev)
{
struct omap2430_musb_platdata *plat = dev_get_plat(dev);
const void *fdt = gd->fdt_blob;
int node = dev_of_offset(dev);
plat->base = (void *)dev_read_addr_ptr(dev);
plat->musb_config.multipoint = fdtdec_get_int(fdt, node, "multipoint",
-1);
if (plat->musb_config.multipoint < 0) {
pr_err("MUSB multipoint DT entry missing\n");
return -ENOENT;
}
plat->musb_config.dyn_fifo = 1;
plat->musb_config.num_eps = fdtdec_get_int(fdt, node, "num-eps", -1);
if (plat->musb_config.num_eps < 0) {
pr_err("MUSB num-eps DT entry missing\n");
return -ENOENT;
}
plat->musb_config.ram_bits = fdtdec_get_int(fdt, node, "ram-bits", -1);
if (plat->musb_config.ram_bits < 0) {
pr_err("MUSB ram-bits DT entry missing\n");
return -ENOENT;
}
plat->plat.power = fdtdec_get_int(fdt, node, "power", -1);
if (plat->plat.power < 0) {
pr_err("MUSB power DT entry missing\n");
return -ENOENT;
}
plat->otg_board_data.interface_type = fdtdec_get_int(fdt, node,
"interface-type",
-1);
if (plat->otg_board_data.interface_type < 0) {
pr_err("MUSB interface-type DT entry missing\n");
return -ENOENT;
}
#if 0 /* In a perfect world, mode would be set to OTG, mode 3 from DT */
plat->plat.mode = fdtdec_get_int(fdt, node, "mode", -1);
if (plat->plat.mode < 0) {
pr_err("MUSB mode DT entry missing\n");
return -ENOENT;
}
#else /* MUSB_OTG, it doesn't work */
#ifdef CONFIG_USB_MUSB_HOST /* Host seems to be the only option that works */
plat->plat.mode = MUSB_HOST;
#else /* For that matter, MUSB_PERIPHERAL doesn't either */
plat->plat.mode = MUSB_PERIPHERAL;
#endif
#endif
plat->otg_board_data.dev = dev;
plat->plat.config = &plat->musb_config;
plat->plat.platform_ops = &omap2430_ops;
plat->plat.board_data = &plat->otg_board_data;
return 0;
}
static int omap2430_musb_probe(struct udevice *dev)
{
#ifdef CONFIG_USB_MUSB_HOST
struct musb_host_data *host = dev_get_priv(dev);
#else
struct musb *musbp;
#endif
struct omap2430_musb_platdata *plat = dev_get_plat(dev);
struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
struct omap_musb_board_data *otg_board_data;
int ret = 0;
void *base = dev_read_addr_ptr(dev);
priv->desc_before_addr = true;
otg_board_data = &plat->otg_board_data;
#ifdef CONFIG_USB_MUSB_HOST
host->host = musb_init_controller(&plat->plat,
(struct device *)otg_board_data,
plat->base);
if (!host->host) {
return -EIO;
}
ret = musb_lowlevel_init(host);
#else
musbp = musb_register(&plat->plat, (struct device *)otg_board_data,
plat->base);
if (IS_ERR_OR_NULL(musbp))
return -EINVAL;
#endif
return ret;
}
static int omap2430_musb_remove(struct udevice *dev)
{
struct musb_host_data *host = dev_get_priv(dev);
musb_stop(host->host);
return 0;
}
static const struct udevice_id omap2430_musb_ids[] = {
{ .compatible = "ti,omap3-musb" },
{ .compatible = "ti,omap4-musb" },
{ }
};
U_BOOT_DRIVER(omap2430_musb) = {
.name = "omap2430-musb",
#ifdef CONFIG_USB_MUSB_HOST
.id = UCLASS_USB,
#else
.id = UCLASS_USB_GADGET_GENERIC,
#endif
.of_match = omap2430_musb_ids,
.of_to_plat = omap2430_musb_of_to_plat,
.probe = omap2430_musb_probe,
.remove = omap2430_musb_remove,
#ifdef CONFIG_USB_MUSB_HOST
.ops = &musb_usb_ops,
#endif
.plat_auto = sizeof(struct omap2430_musb_platdata),
.priv_auto = sizeof(struct musb_host_data),
};
#endif /* CONFIG_IS_ENABLED(DM_USB) */
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