drivers/usb/musb-new/ti-musb.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * MISC driver for TI MUSB Glue.
  *
  * (C) Copyright 2016
  *     Texas Instruments Incorporated, <www.ti.com>
  */
 #include <common.h>
 #include <command.h>
 #include <console.h>
 #include <dm.h>
 #include <log.h>
 #include <malloc.h>
 #include <asm/global_data.h>
 #include <linux/usb/otg.h>
 #include <dm/device-internal.h>
 #include <dm/lists.h>

 #include <asm/io.h>
 #include <asm/omap_musb.h>
 #include "musb_uboot.h"

 DECLARE_GLOBAL_DATA_PTR;

 #if CONFIG_IS_ENABLED(DM_USB)
 /* USB 2.0 PHY Control */
 #define CM_PHY_PWRDN			(1 << 0)
 #define CM_PHY_OTG_PWRDN		(1 << 1)
 #define OTGVDET_EN			(1 << 19)
 #define OTGSESSENDEN			(1 << 20)

 #define AM335X_USB0_CTRL	0x0
 #define AM335X_USB1_CTRL	0x8

 static void ti_musb_set_phy_power(struct udevice *dev, u8 on)
 {
 	struct ti_musb_plat *plat = dev_get_plat(dev);

 	if (!plat->ctrl_mod_base)
 		return;

 	if (on) {
 		clrsetbits_le32(plat->ctrl_mod_base,
 				CM_PHY_PWRDN | CM_PHY_OTG_PWRDN,
 				OTGVDET_EN | OTGSESSENDEN);
 	} else {
 		clrsetbits_le32(plat->ctrl_mod_base, 0,
 				CM_PHY_PWRDN | CM_PHY_OTG_PWRDN);
 	}
 }

 #if CONFIG_IS_ENABLED(OF_CONTROL)

 static int ti_musb_get_usb_index(int node)
 {
 	const void *fdt = gd->fdt_blob;
 	int i = 0;
 	char path[64];
 	const char *alias_path;
 	char alias[16];

 	fdt_get_path(fdt, node, path, sizeof(path));

 	do {
 		snprintf(alias, sizeof(alias), "usb%d", i);
 		alias_path = fdt_get_alias(fdt, alias);
 		if (alias_path == NULL) {
 			debug("USB index not found\n");
 			return -ENOENT;
 		}

 		if (!strcmp(path, alias_path))
 			return i;

 		i++;
 	} while (alias_path);

 	return -ENOENT;
 }

 static int ti_musb_of_to_plat(struct udevice *dev)
 {
 	struct ti_musb_plat *plat = dev_get_plat(dev);
 	const void *fdt = gd->fdt_blob;
 	int node = dev_of_offset(dev);
 	int phys;
 	int ctrl_mod;
 	int usb_index;
 	struct musb_hdrc_config *musb_config;

 	plat->base = devfdt_get_addr_index_ptr(dev, 1);

 	phys = fdtdec_lookup_phandle(fdt, node, "phys");
 	ctrl_mod = fdtdec_lookup_phandle(fdt, phys, "ti,ctrl_mod");
 	plat->ctrl_mod_base = (void *)fdtdec_get_addr(fdt, ctrl_mod, "reg");
 	usb_index = ti_musb_get_usb_index(node);
 	switch (usb_index) {
 	case 1:
 		plat->ctrl_mod_base += AM335X_USB1_CTRL;
 		break;
 	case 0:
 		plat->ctrl_mod_base += AM335X_USB0_CTRL;
 		break;
 	default:
 		break;
 	}

 	musb_config = malloc(sizeof(struct musb_hdrc_config));
 	memset(musb_config, 0, sizeof(struct musb_hdrc_config));

 	musb_config->multipoint = fdtdec_get_int(fdt, node,
 						 "mentor,multipoint", -1);
 	if (musb_config->multipoint < 0) {
 		pr_err("MUSB multipoint DT entry missing\n");
 		return -ENOENT;
 	}

 	musb_config->dyn_fifo = 1;

 	musb_config->num_eps = fdtdec_get_int(fdt, node, "mentor,num-eps",
 					      -1);
 	if (musb_config->num_eps < 0) {
 		pr_err("MUSB num-eps DT entry missing\n");
 		return -ENOENT;
 	}

 	musb_config->ram_bits = fdtdec_get_int(fdt, node, "mentor,ram-bits",
 					       -1);
 	if (musb_config->ram_bits < 0) {
 		pr_err("MUSB ram-bits DT entry missing\n");
 		return -ENOENT;
 	}

 	plat->plat.config = musb_config;

 	plat->plat.power = fdtdec_get_int(fdt, node, "mentor,power", -1);
 	if (plat->plat.power < 0) {
 		pr_err("MUSB mentor,power DT entry missing\n");
 		return -ENOENT;
 	}

 	plat->plat.platform_ops = &musb_dsps_ops;

 	return 0;
 }
 #endif

 static int ti_musb_host_probe(struct udevice *dev)
 {
 	struct musb_host_data *host = dev_get_priv(dev);
 	struct ti_musb_plat *plat = dev_get_plat(dev);
 	struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
 	int ret;

 	priv->desc_before_addr = true;

 	host->host = musb_init_controller(&plat->plat,
 					  NULL,
 					  plat->base);
 	if (!host->host)
 		return -EIO;

 	ti_musb_set_phy_power(dev, 1);
 	ret = musb_lowlevel_init(host);

 	return ret;
 }

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

 	musb_stop(host->host);
 	ti_musb_set_phy_power(dev, 0);

 	return 0;
 }

 #if CONFIG_IS_ENABLED(OF_CONTROL)
 static int ti_musb_host_of_to_plat(struct udevice *dev)
 {
 	struct ti_musb_plat *plat = dev_get_plat(dev);
 	const void *fdt = gd->fdt_blob;
 	int node = dev_of_offset(dev);
 	int ret;

 	ret = ti_musb_of_to_plat(dev);
 	if (ret) {
 		pr_err("plat dt parse error\n");
 		return ret;
 	}

 	plat->plat.mode = MUSB_HOST;

 	return 0;
 }
 #endif

 U_BOOT_DRIVER(ti_musb_host) = {
 	.name	= "ti-musb-host",
 	.id	= UCLASS_USB,
 #if CONFIG_IS_ENABLED(OF_CONTROL)
 	.of_to_plat = ti_musb_host_of_to_plat,
 #endif
 	.probe = ti_musb_host_probe,
 	.remove = ti_musb_host_remove,
 	.ops	= &musb_usb_ops,
 	.plat_auto	= sizeof(struct ti_musb_plat),
 	.priv_auto	= sizeof(struct musb_host_data),
 };

 #if CONFIG_IS_ENABLED(DM_USB_GADGET)
 struct ti_musb_peripheral {
 	struct musb *periph;
 };

 #if CONFIG_IS_ENABLED(OF_CONTROL)
 static int ti_musb_peripheral_of_to_plat(struct udevice *dev)
 {
 	struct ti_musb_plat *plat = dev_get_plat(dev);
 	const void *fdt = gd->fdt_blob;
 	int node = dev_of_offset(dev);
 	int ret;

 	ret = ti_musb_of_to_plat(dev);
 	if (ret) {
 		pr_err("plat dt parse error\n");
 		return ret;
 	}
 	plat->plat.mode = MUSB_PERIPHERAL;

 	return 0;
 }
 #endif

 int dm_usb_gadget_handle_interrupts(struct udevice *dev)
 {
 	struct ti_musb_peripheral *priv = dev_get_priv(dev);

 	priv->periph->isr(0, priv->periph);

 	return 0;
 }

 static int ti_musb_peripheral_probe(struct udevice *dev)
 {
 	struct ti_musb_peripheral *priv = dev_get_priv(dev);
 	struct ti_musb_plat *plat = dev_get_plat(dev);
 	int ret;

 	priv->periph = musb_init_controller(&plat->plat,
 					    NULL,
 					    plat->base);
 	if (!priv->periph)
 		return -EIO;

 	ti_musb_set_phy_power(dev, 1);
 	musb_gadget_setup(priv->periph);
 	return usb_add_gadget_udc((struct device *)dev, &priv->periph->g);
 }

 static int ti_musb_peripheral_remove(struct udevice *dev)
 {
 	struct ti_musb_peripheral *priv = dev_get_priv(dev);

 	usb_del_gadget_udc(&priv->periph->g);
 	ti_musb_set_phy_power(dev, 0);

 	return 0;
 }

 U_BOOT_DRIVER(ti_musb_peripheral) = {
 	.name	= "ti-musb-peripheral",
 	.id	= UCLASS_USB_GADGET_GENERIC,
 #if CONFIG_IS_ENABLED(OF_CONTROL)
 	.of_to_plat = ti_musb_peripheral_of_to_plat,
 #endif
 	.probe = ti_musb_peripheral_probe,
 	.remove = ti_musb_peripheral_remove,
 	.ops	= &musb_usb_ops,
 	.plat_auto	= sizeof(struct ti_musb_plat),
 	.priv_auto	= sizeof(struct ti_musb_peripheral),
 	.flags = DM_FLAG_PRE_RELOC,
 };
 #endif

 #if CONFIG_IS_ENABLED(OF_CONTROL)
 static int ti_musb_wrapper_bind(struct udevice *parent)
 {
 	ofnode node;
 	int ret;

 	ofnode_for_each_subnode(node, dev_ofnode(parent)) {
 		struct udevice *dev;
 		const char *name = ofnode_get_name(node);
 		enum usb_dr_mode dr_mode;
 		struct driver *drv;

 		if (strncmp(name, "usb@", 4))
 			continue;

 		dr_mode = usb_get_dr_mode(node);
 		switch (dr_mode) {
 		case USB_DR_MODE_PERIPHERAL:
 			/* Bind MUSB device */
 			ret = device_bind_driver_to_node(parent,
 							 "ti-musb-peripheral",
 							 name,
 							 node,
 							 &dev);
 			if (ret)
 				pr_err("musb - not able to bind usb peripheral node\n");
 			break;
 		case USB_DR_MODE_HOST:
 			/* Bind MUSB host */
 			ret = device_bind_driver_to_node(parent,
 							 "ti-musb-host",
 							 name,
 							 node,
 							 &dev);
 			if (ret)
 				pr_err("musb - not able to bind usb host node\n");
 			break;
 		default:
 			break;
 		};
 	}
 	return 0;
 }

 static const struct udevice_id ti_musb_ids[] = {
 	{ .compatible = "ti,am33xx-usb" },
 	{ }
 };

 U_BOOT_DRIVER(ti_musb_wrapper) = {
 	.name	= "ti-musb-wrapper",
 	.id	= UCLASS_MISC,
 	.of_match = ti_musb_ids,
 	.bind = ti_musb_wrapper_bind,
 };
 #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */

 #endif /* CONFIG_IS_ENABLED(DM_USB) */
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* MISC driver for TI MUSB Glue.
	*
	* (C) Copyright 2016
	* Texas Instruments Incorporated, <www.ti.com>
	*/
	#include <common.h>
	#include <command.h>
	#include <console.h>
	#include <dm.h>
	#include <log.h>
	#include <malloc.h>
	#include <asm/global_data.h>
	#include <linux/usb/otg.h>
	#include <dm/device-internal.h>
	#include <dm/lists.h>

	#include <asm/io.h>
	#include <asm/omap_musb.h>
	#include "musb_uboot.h"

	DECLARE_GLOBAL_DATA_PTR;

	#if CONFIG_IS_ENABLED(DM_USB)
	/* USB 2.0 PHY Control */
	#define CM_PHY_PWRDN (1 << 0)
	#define CM_PHY_OTG_PWRDN (1 << 1)
	#define OTGVDET_EN (1 << 19)
	#define OTGSESSENDEN (1 << 20)

	#define AM335X_USB0_CTRL 0x0
	#define AM335X_USB1_CTRL 0x8

	static void ti_musb_set_phy_power(struct udevice *dev, u8 on)
	{
	struct ti_musb_plat *plat = dev_get_plat(dev);

	if (!plat->ctrl_mod_base)
	return;

	if (on) {
	clrsetbits_le32(plat->ctrl_mod_base,
	CM_PHY_PWRDN \| CM_PHY_OTG_PWRDN,
	OTGVDET_EN \| OTGSESSENDEN);
	} else {
	clrsetbits_le32(plat->ctrl_mod_base, 0,
	CM_PHY_PWRDN \| CM_PHY_OTG_PWRDN);
	}
	}

	#if CONFIG_IS_ENABLED(OF_CONTROL)

	static int ti_musb_get_usb_index(int node)
	{
	const void *fdt = gd->fdt_blob;
	int i = 0;
	char path[64];
	const char *alias_path;
	char alias[16];

	fdt_get_path(fdt, node, path, sizeof(path));

	do {
	snprintf(alias, sizeof(alias), "usb%d", i);
	alias_path = fdt_get_alias(fdt, alias);
	if (alias_path == NULL) {
	debug("USB index not found\n");
	return -ENOENT;
	}

	if (!strcmp(path, alias_path))
	return i;

	i++;
	} while (alias_path);

	return -ENOENT;
	}

	static int ti_musb_of_to_plat(struct udevice *dev)
	{
	struct ti_musb_plat *plat = dev_get_plat(dev);
	const void *fdt = gd->fdt_blob;
	int node = dev_of_offset(dev);
	int phys;
	int ctrl_mod;
	int usb_index;
	struct musb_hdrc_config *musb_config;

	plat->base = devfdt_get_addr_index_ptr(dev, 1);

	phys = fdtdec_lookup_phandle(fdt, node, "phys");
	ctrl_mod = fdtdec_lookup_phandle(fdt, phys, "ti,ctrl_mod");
	plat->ctrl_mod_base = (void *)fdtdec_get_addr(fdt, ctrl_mod, "reg");
	usb_index = ti_musb_get_usb_index(node);
	switch (usb_index) {
	case 1:
	plat->ctrl_mod_base += AM335X_USB1_CTRL;
	break;
	case 0:
	plat->ctrl_mod_base += AM335X_USB0_CTRL;
	break;
	default:
	break;
	}

	musb_config = malloc(sizeof(struct musb_hdrc_config));
	memset(musb_config, 0, sizeof(struct musb_hdrc_config));

	musb_config->multipoint = fdtdec_get_int(fdt, node,
	"mentor,multipoint", -1);
	if (musb_config->multipoint < 0) {
	pr_err("MUSB multipoint DT entry missing\n");
	return -ENOENT;
	}

	musb_config->dyn_fifo = 1;

	musb_config->num_eps = fdtdec_get_int(fdt, node, "mentor,num-eps",
	-1);
	if (musb_config->num_eps < 0) {
	pr_err("MUSB num-eps DT entry missing\n");
	return -ENOENT;
	}

	musb_config->ram_bits = fdtdec_get_int(fdt, node, "mentor,ram-bits",
	-1);
	if (musb_config->ram_bits < 0) {
	pr_err("MUSB ram-bits DT entry missing\n");
	return -ENOENT;
	}

	plat->plat.config = musb_config;

	plat->plat.power = fdtdec_get_int(fdt, node, "mentor,power", -1);
	if (plat->plat.power < 0) {
	pr_err("MUSB mentor,power DT entry missing\n");
	return -ENOENT;
	}

	plat->plat.platform_ops = &musb_dsps_ops;

	return 0;
	}
	#endif

	static int ti_musb_host_probe(struct udevice *dev)
	{
	struct musb_host_data *host = dev_get_priv(dev);
	struct ti_musb_plat *plat = dev_get_plat(dev);
	struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
	int ret;

	priv->desc_before_addr = true;

	host->host = musb_init_controller(&plat->plat,
	NULL,
	plat->base);
	if (!host->host)
	return -EIO;

	ti_musb_set_phy_power(dev, 1);
	ret = musb_lowlevel_init(host);

	return ret;
	}

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

	musb_stop(host->host);
	ti_musb_set_phy_power(dev, 0);

	return 0;
	}

	#if CONFIG_IS_ENABLED(OF_CONTROL)
	static int ti_musb_host_of_to_plat(struct udevice *dev)
	{
	struct ti_musb_plat *plat = dev_get_plat(dev);
	const void *fdt = gd->fdt_blob;
	int node = dev_of_offset(dev);
	int ret;

	ret = ti_musb_of_to_plat(dev);
	if (ret) {
	pr_err("plat dt parse error\n");
	return ret;
	}

	plat->plat.mode = MUSB_HOST;

	return 0;
	}
	#endif

	U_BOOT_DRIVER(ti_musb_host) = {
	.name = "ti-musb-host",
	.id = UCLASS_USB,
	#if CONFIG_IS_ENABLED(OF_CONTROL)
	.of_to_plat = ti_musb_host_of_to_plat,
	#endif
	.probe = ti_musb_host_probe,
	.remove = ti_musb_host_remove,
	.ops = &musb_usb_ops,
	.plat_auto = sizeof(struct ti_musb_plat),
	.priv_auto = sizeof(struct musb_host_data),
	};

	#if CONFIG_IS_ENABLED(DM_USB_GADGET)
	struct ti_musb_peripheral {
	struct musb *periph;
	};

	#if CONFIG_IS_ENABLED(OF_CONTROL)
	static int ti_musb_peripheral_of_to_plat(struct udevice *dev)
	{
	struct ti_musb_plat *plat = dev_get_plat(dev);
	const void *fdt = gd->fdt_blob;
	int node = dev_of_offset(dev);
	int ret;

	ret = ti_musb_of_to_plat(dev);
	if (ret) {
	pr_err("plat dt parse error\n");
	return ret;
	}
	plat->plat.mode = MUSB_PERIPHERAL;

	return 0;
	}
	#endif

	int dm_usb_gadget_handle_interrupts(struct udevice *dev)
	{
	struct ti_musb_peripheral *priv = dev_get_priv(dev);

	priv->periph->isr(0, priv->periph);

	return 0;
	}

	static int ti_musb_peripheral_probe(struct udevice *dev)
	{
	struct ti_musb_peripheral *priv = dev_get_priv(dev);
	struct ti_musb_plat *plat = dev_get_plat(dev);
	int ret;

	priv->periph = musb_init_controller(&plat->plat,
	NULL,
	plat->base);
	if (!priv->periph)
	return -EIO;

	ti_musb_set_phy_power(dev, 1);
	musb_gadget_setup(priv->periph);
	return usb_add_gadget_udc((struct device *)dev, &priv->periph->g);
	}

	static int ti_musb_peripheral_remove(struct udevice *dev)
	{
	struct ti_musb_peripheral *priv = dev_get_priv(dev);

	usb_del_gadget_udc(&priv->periph->g);
	ti_musb_set_phy_power(dev, 0);

	return 0;
	}

	U_BOOT_DRIVER(ti_musb_peripheral) = {
	.name = "ti-musb-peripheral",
	.id = UCLASS_USB_GADGET_GENERIC,
	#if CONFIG_IS_ENABLED(OF_CONTROL)
	.of_to_plat = ti_musb_peripheral_of_to_plat,
	#endif
	.probe = ti_musb_peripheral_probe,
	.remove = ti_musb_peripheral_remove,
	.ops = &musb_usb_ops,
	.plat_auto = sizeof(struct ti_musb_plat),
	.priv_auto = sizeof(struct ti_musb_peripheral),
	.flags = DM_FLAG_PRE_RELOC,
	};
	#endif

	#if CONFIG_IS_ENABLED(OF_CONTROL)
	static int ti_musb_wrapper_bind(struct udevice *parent)
	{
	ofnode node;
	int ret;

	ofnode_for_each_subnode(node, dev_ofnode(parent)) {
	struct udevice *dev;
	const char *name = ofnode_get_name(node);
	enum usb_dr_mode dr_mode;
	struct driver *drv;

	if (strncmp(name, "usb@", 4))
	continue;

	dr_mode = usb_get_dr_mode(node);
	switch (dr_mode) {
	case USB_DR_MODE_PERIPHERAL:
	/* Bind MUSB device */
	ret = device_bind_driver_to_node(parent,
	"ti-musb-peripheral",
	name,
	node,
	&dev);
	if (ret)
	pr_err("musb - not able to bind usb peripheral node\n");
	break;
	case USB_DR_MODE_HOST:
	/* Bind MUSB host */
	ret = device_bind_driver_to_node(parent,
	"ti-musb-host",
	name,
	node,
	&dev);
	if (ret)
	pr_err("musb - not able to bind usb host node\n");
	break;
	default:
	break;
	};
	}
	return 0;
	}

	static const struct udevice_id ti_musb_ids[] = {
	{ .compatible = "ti,am33xx-usb" },
	{ }
	};

	U_BOOT_DRIVER(ti_musb_wrapper) = {
	.name = "ti-musb-wrapper",
	.id = UCLASS_MISC,
	.of_match = ti_musb_ids,
	.bind = ti_musb_wrapper_bind,
	};
	#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */

	#endif /* CONFIG_IS_ENABLED(DM_USB) */