[u-boot.git] / drivers / usb / musb-new / ti-musb.c

/*
 * MISC driver for TI MUSB Glue.
 *
 * (C) Copyright 2016
 *     Texas Instruments Incorporated, <www.ti.com>
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */
#include <common.h>
#include <command.h>
#include <console.h>
#include <dm.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;

#ifdef CONFIG_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_USB1_CTRL	0x8

struct ti_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 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 void ti_musb_set_phy_power(struct udevice *dev, u8 on)
{
	struct ti_musb_platdata *platdata = dev_get_platdata(dev);

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

static int ti_musb_ofdata_to_platdata(struct udevice *dev)
{
	struct ti_musb_platdata *platdata = dev_get_platdata(dev);
	const void *fdt = gd->fdt_blob;
	int node = dev_of_offset(dev);
	int phys;
	int ctrl_mod;
	int usb_index;

	platdata->base = (void *)devfdt_get_addr_index(dev, 1);

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

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

	platdata->musb_config.dyn_fifo = 1;

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

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

	platdata->otg_board_data.set_phy_power = ti_musb_set_phy_power;
	platdata->otg_board_data.dev = dev;
	platdata->plat.config = &platdata->musb_config;

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

	platdata->plat.platform_ops = &musb_dsps_ops;
	platdata->plat.board_data = &platdata->otg_board_data;

	return 0;
}

static int ti_musb_host_probe(struct udevice *dev)
{
	struct musb_host_data *host = dev_get_priv(dev);
	struct ti_musb_platdata *platdata = dev_get_platdata(dev);
	struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
	struct omap_musb_board_data *otg_board_data;
	int ret;

	priv->desc_before_addr = true;

	otg_board_data = &platdata->otg_board_data;

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

	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);

	return 0;
}

static int ti_musb_host_ofdata_to_platdata(struct udevice *dev)
{
	struct ti_musb_platdata *platdata = dev_get_platdata(dev);
	const void *fdt = gd->fdt_blob;
	int node = dev_of_offset(dev);
	int ret;

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

	platdata->plat.mode = MUSB_HOST;

	return 0;
}

U_BOOT_DRIVER(ti_musb_host) = {
	.name	= "ti-musb-host",
	.id	= UCLASS_USB,
	.ofdata_to_platdata = ti_musb_host_ofdata_to_platdata,
	.probe = ti_musb_host_probe,
	.remove = ti_musb_host_remove,
	.ops	= &musb_usb_ops,
	.platdata_auto_alloc_size = sizeof(struct ti_musb_platdata),
	.priv_auto_alloc_size = sizeof(struct musb_host_data),
};

static int ti_musb_wrapper_bind(struct udevice *parent)
{
	const void *fdt = gd->fdt_blob;
	int node;
	int ret;

	for (node = fdt_first_subnode(fdt, dev_of_offset(parent)); node > 0;
	     node = fdt_next_subnode(fdt, node)) {
		struct udevice *dev;
		const char *name = fdt_get_name(fdt, node, NULL);
		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 */
			break;
		case USB_DR_MODE_HOST:
			/* Bind MUSB host */
			ret = device_bind_driver_to_node(parent, "ti-musb-host",
					name, offset_to_ofnode(node), &dev);
			if (ret) {
				pr_err("musb - not able to bind usb host node\n");
				return ret;
			}
			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_DM_USB */
Commit	Line	Data
28b8d5fd M	1	/*
	2	* MISC driver for TI MUSB Glue.
	3	*
	4	* (C) Copyright 2016
	5	* Texas Instruments Incorporated, <www.ti.com>
	6	*
	7	* SPDX-License-Identifier: GPL-2.0+
	8	*/
	9	#include <common.h>
	10	#include <command.h>
	11	#include <console.h>
	12	#include <dm.h>
	13	#include <linux/usb/otg.h>
	14	#include <dm/device-internal.h>
	15	#include <dm/lists.h>
	16
ae6acf9f M	17	#include <asm/io.h>
	18	#include <asm/omap_musb.h>
	19	#include "musb_uboot.h"
	20
28b8d5fd M	21	DECLARE_GLOBAL_DATA_PTR;
	22
	23	#ifdef CONFIG_DM_USB
	24
ae6acf9f M	25	/* USB 2.0 PHY Control */
	26	#define CM_PHY_PWRDN (1 << 0)
	27	#define CM_PHY_OTG_PWRDN (1 << 1)
	28	#define OTGVDET_EN (1 << 19)
	29	#define OTGSESSENDEN (1 << 20)
	30
	31	#define AM335X_USB1_CTRL 0x8
	32
	33	struct ti_musb_platdata {
	34	void *base;
	35	void *ctrl_mod_base;
	36	struct musb_hdrc_platform_data plat;
	37	struct musb_hdrc_config musb_config;
	38	struct omap_musb_board_data otg_board_data;
	39	};
	40
	41	static int ti_musb_get_usb_index(int node)
	42	{
	43	const void *fdt = gd->fdt_blob;
	44	int i = 0;
	45	char path[64];
	46	const char *alias_path;
	47	char alias[16];
	48
	49	fdt_get_path(fdt, node, path, sizeof(path));
	50
	51	do {
	52	snprintf(alias, sizeof(alias), "usb%d", i);
	53	alias_path = fdt_get_alias(fdt, alias);
	54	if (alias_path == NULL) {
	55	debug("USB index not found\n");
	56	return -ENOENT;
	57	}
	58
	59	if (!strcmp(path, alias_path))
	60	return i;
	61
	62	i++;
	63	} while (alias_path);
	64
	65	return -ENOENT;
	66	}
	67
	68	static void ti_musb_set_phy_power(struct udevice *dev, u8 on)
	69	{
	70	struct ti_musb_platdata *platdata = dev_get_platdata(dev);
	71
	72	if (on) {
	73	clrsetbits_le32(platdata->ctrl_mod_base,
	74	CM_PHY_PWRDN \| CM_PHY_OTG_PWRDN,
	75	OTGVDET_EN \| OTGSESSENDEN);
	76	} else {
	77	clrsetbits_le32(platdata->ctrl_mod_base, 0,
	78	CM_PHY_PWRDN \| CM_PHY_OTG_PWRDN);
	79	}
	80	}
	81
	82	static int ti_musb_ofdata_to_platdata(struct udevice *dev)
	83	{
	84	struct ti_musb_platdata *platdata = dev_get_platdata(dev);
	85	const void *fdt = gd->fdt_blob;
e160f7d4	86	int node = dev_of_offset(dev);
ae6acf9f M	87	int phys;
	88	int ctrl_mod;
	89	int usb_index;
	90
a821c4af	91	platdata->base = (void *)devfdt_get_addr_index(dev, 1);
ae6acf9f M	92
	93	phys = fdtdec_lookup_phandle(fdt, node, "phys");
	94	ctrl_mod = fdtdec_lookup_phandle(fdt, phys, "ti,ctrl_mod");
	95	platdata->ctrl_mod_base = (void *)fdtdec_get_addr(fdt, ctrl_mod, "reg");
	96	usb_index = ti_musb_get_usb_index(node);
	97	switch (usb_index) {
	98	case 1:
	99	platdata->ctrl_mod_base += AM335X_USB1_CTRL;
	100	case 0:
	101	default:
	102	break;
	103	}
	104
	105	platdata->musb_config.multipoint = fdtdec_get_int(fdt, node,
	106	"mentor,multipoint",
	107	-1);
	108	if (platdata->musb_config.multipoint < 0) {
9b643e31	109	pr_err("MUSB multipoint DT entry missing\n");
ae6acf9f M	110	return -ENOENT;
	111	}
	112
	113	platdata->musb_config.dyn_fifo = 1;
	114
	115	platdata->musb_config.num_eps = fdtdec_get_int(fdt, node,
	116	"mentor,num-eps", -1);
	117	if (platdata->musb_config.num_eps < 0) {
9b643e31	118	pr_err("MUSB num-eps DT entry missing\n");
ae6acf9f M	119	return -ENOENT;
	120	}
	121
	122	platdata->musb_config.ram_bits = fdtdec_get_int(fdt, node,
	123	"mentor,ram-bits", -1);
	124	if (platdata->musb_config.ram_bits < 0) {
9b643e31	125	pr_err("MUSB ram-bits DT entry missing\n");
ae6acf9f M	126	return -ENOENT;
	127	}
	128
	129	platdata->otg_board_data.set_phy_power = ti_musb_set_phy_power;
	130	platdata->otg_board_data.dev = dev;
	131	platdata->plat.config = &platdata->musb_config;
	132
	133	platdata->plat.power = fdtdec_get_int(fdt, node, "mentor,power", -1);
	134	if (platdata->plat.power < 0) {
9b643e31	135	pr_err("MUSB mentor,power DT entry missing\n");
ae6acf9f M	136	return -ENOENT;
	137	}
	138
	139	platdata->plat.platform_ops = &musb_dsps_ops;
	140	platdata->plat.board_data = &platdata->otg_board_data;
	141
	142	return 0;
	143	}
	144
	145	static int ti_musb_host_probe(struct udevice *dev)
	146	{
	147	struct musb_host_data *host = dev_get_priv(dev);
	148	struct ti_musb_platdata *platdata = dev_get_platdata(dev);
	149	struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
	150	struct omap_musb_board_data *otg_board_data;
	151	int ret;
	152
	153	priv->desc_before_addr = true;
	154
	155	otg_board_data = &platdata->otg_board_data;
	156
	157	host->host = musb_init_controller(&platdata->plat,
	158	(struct device *)otg_board_data,
	159	platdata->base);
	160	if (!host->host)
	161	return -EIO;
	162
	163	ret = musb_lowlevel_init(host);
	164
	165	return ret;
	166	}
	167
	168	static int ti_musb_host_remove(struct udevice *dev)
	169	{
	170	struct musb_host_data *host = dev_get_priv(dev);
	171
	172	musb_stop(host->host);
	173
	174	return 0;
	175	}
	176
	177	static int ti_musb_host_ofdata_to_platdata(struct udevice *dev)
	178	{
	179	struct ti_musb_platdata *platdata = dev_get_platdata(dev);
	180	const void *fdt = gd->fdt_blob;
e160f7d4	181	int node = dev_of_offset(dev);
ae6acf9f M	182	int ret;
	183
	184	ret = ti_musb_ofdata_to_platdata(dev);
	185	if (ret) {
9b643e31	186	pr_err("platdata dt parse error\n");
ae6acf9f M	187	return ret;
	188	}
	189
	190	platdata->plat.mode = MUSB_HOST;
	191
	192	return 0;
	193	}
	194
	195	U_BOOT_DRIVER(ti_musb_host) = {
	196	.name = "ti-musb-host",
	197	.id = UCLASS_USB,
	198	.ofdata_to_platdata = ti_musb_host_ofdata_to_platdata,
	199	.probe = ti_musb_host_probe,
	200	.remove = ti_musb_host_remove,
	201	.ops = &musb_usb_ops,
	202	.platdata_auto_alloc_size = sizeof(struct ti_musb_platdata),
	203	.priv_auto_alloc_size = sizeof(struct musb_host_data),
	204	};
	205
28b8d5fd M	206	static int ti_musb_wrapper_bind(struct udevice *parent)
	207	{
	208	const void *fdt = gd->fdt_blob;
	209	int node;
	210	int ret;
	211
e160f7d4	212	for (node = fdt_first_subnode(fdt, dev_of_offset(parent)); node > 0;
28b8d5fd M	213	node = fdt_next_subnode(fdt, node)) {
	214	struct udevice *dev;
	215	const char *name = fdt_get_name(fdt, node, NULL);
	216	enum usb_dr_mode dr_mode;
	217	struct driver *drv;
	218
	219	if (strncmp(name, "usb@", 4))
	220	continue;
	221
	222	dr_mode = usb_get_dr_mode(node);
	223	switch (dr_mode) {
	224	case USB_DR_MODE_PERIPHERAL:
	225	/* Bind MUSB device */
	226	break;
	227	case USB_DR_MODE_HOST:
	228	/* Bind MUSB host */
ae6acf9f	229	ret = device_bind_driver_to_node(parent, "ti-musb-host",
45a26867	230	name, offset_to_ofnode(node), &dev);
ae6acf9f	231	if (ret) {
9b643e31	232	pr_err("musb - not able to bind usb host node\n");
ae6acf9f M	233	return ret;
ae6acf9f M	234	}
28b8d5fd M	235	break;
	236	default:
	237	break;
	238	};
	239	}
	240	return 0;
	241	}
	242
	243	static const struct udevice_id ti_musb_ids[] = {
	244	{ .compatible = "ti,am33xx-usb" },
	245	{ }
	246	};
	247
	248	U_BOOT_DRIVER(ti_musb_wrapper) = {
	249	.name = "ti-musb-wrapper",
	250	.id = UCLASS_MISC,
	251	.of_match = ti_musb_ids,
	252	.bind = ti_musb_wrapper_bind,
	253	};
	254
	255	#endif /* CONFIG_DM_USB */