drivers/usb/musb-new/omap2430.c - filogic/uboot - Gitiles

 // 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 <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/printk.h>
 #include <linux/usb/otg.h>
 #include <asm/global_data.h>
 #include <asm/omap_common.h>
 #include <asm/omap_musb.h>
 #include <twl4030.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
 	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_plat {
 	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_plat *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)
 {
 	struct omap2430_musb_plat *plat = dev_get_plat(dev);
 	struct omap_musb_board_data *otg_board_data;
 	int ret = 0;
 	void *base = dev_read_addr_ptr(dev);
 	struct musb *musbp;

 	otg_board_data = &plat->otg_board_data;

 	if (IS_ENABLED(CONFIG_USB_MUSB_HOST)) {
 		struct musb_host_data *host = dev_get_priv(dev);
 		struct usb_bus_priv *priv = dev_get_uclass_priv(dev);

 		priv->desc_before_addr = true;

 		host->host = musb_init_controller(&plat->plat,
 						  (struct device *)otg_board_data,
 						  plat->base);
 		if (!host->host)
 			return -EIO;

 		return musb_lowlevel_init(host);
 	} else if (CONFIG_IS_ENABLED(DM_USB_GADGET)) {
 		struct musb_host_data *host = dev_get_priv(dev);

 		host->host = musb_init_controller(&plat->plat,
 						  (struct device *)otg_board_data,
 						  plat->base);
 		if (!host->host)
 			return -EIO;

 		return usb_add_gadget_udc((struct device *)otg_board_data, &host->host->g);
 	}

 	musbp = musb_register(&plat->plat, (struct device *)otg_board_data,
 			      plat->base);
 	if (IS_ERR_OR_NULL(musbp))
 		return -EINVAL;

 	return 0;
 }

 static int omap2430_musb_remove(struct udevice *dev)
 {
 	struct musb_host_data *host = dev_get_priv(dev);

 	musb_stop(host->host);

 	return 0;
 }

 #ifndef CONFIG_USB_MUSB_HOST
 static int omap2340_gadget_handle_interrupts(struct udevice *dev)
 {
 	struct musb_host_data *host = dev_get_priv(dev);

 	host->host->isr(0, host->host);

 	return 0;
 }

 static const struct usb_gadget_generic_ops omap2340_gadget_ops = {
 	.handle_interrupts	= omap2340_gadget_handle_interrupts,
 };
 #endif

 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,
 	.ops		= &omap2340_gadget_ops,
 #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_plat),
 	.priv_auto	= sizeof(struct musb_host_data),
 };

 #endif /* CONFIG_IS_ENABLED(DM_USB) */
	// 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 <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/printk.h>
	#include <linux/usb/otg.h>
	#include <asm/global_data.h>
	#include <asm/omap_common.h>
	#include <asm/omap_musb.h>
	#include <twl4030.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
	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_plat {
	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_plat *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)
	{
	struct omap2430_musb_plat *plat = dev_get_plat(dev);
	struct omap_musb_board_data *otg_board_data;
	int ret = 0;
	void *base = dev_read_addr_ptr(dev);
	struct musb *musbp;

	otg_board_data = &plat->otg_board_data;

	if (IS_ENABLED(CONFIG_USB_MUSB_HOST)) {
	struct musb_host_data *host = dev_get_priv(dev);
	struct usb_bus_priv *priv = dev_get_uclass_priv(dev);

	priv->desc_before_addr = true;

	host->host = musb_init_controller(&plat->plat,
	(struct device *)otg_board_data,
	plat->base);
	if (!host->host)
	return -EIO;

	return musb_lowlevel_init(host);
	} else if (CONFIG_IS_ENABLED(DM_USB_GADGET)) {
	struct musb_host_data *host = dev_get_priv(dev);

	host->host = musb_init_controller(&plat->plat,
	(struct device *)otg_board_data,
	plat->base);
	if (!host->host)
	return -EIO;

	return usb_add_gadget_udc((struct device *)otg_board_data, &host->host->g);
	}

	musbp = musb_register(&plat->plat, (struct device *)otg_board_data,
	plat->base);
	if (IS_ERR_OR_NULL(musbp))
	return -EINVAL;

	return 0;
	}

	static int omap2430_musb_remove(struct udevice *dev)
	{
	struct musb_host_data *host = dev_get_priv(dev);

	musb_stop(host->host);

	return 0;
	}

	#ifndef CONFIG_USB_MUSB_HOST
	static int omap2340_gadget_handle_interrupts(struct udevice *dev)
	{
	struct musb_host_data *host = dev_get_priv(dev);

	host->host->isr(0, host->host);

	return 0;
	}

	static const struct usb_gadget_generic_ops omap2340_gadget_ops = {
	.handle_interrupts = omap2340_gadget_handle_interrupts,
	};
	#endif

	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,
	.ops = &omap2340_gadget_ops,
	#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_plat),
	.priv_auto = sizeof(struct musb_host_data),
	};

	#endif /* CONFIG_IS_ENABLED(DM_USB) */