1 // SPDX-License-Identifier: GPL-2.0
13 #include <linux/usb/otg-fsm.h>
24 static int ci_device_show(struct seq_file *s, void *data)  in ci_device_show()  argument
26 	struct ci_hdrc *ci = s->private;  in ci_device_show()
27 	struct usb_gadget *gadget = &ci->gadget;  in ci_device_show()
29 	seq_printf(s, "speed             = %d\n", gadget->speed);  in ci_device_show()
30 	seq_printf(s, "max_speed         = %d\n", gadget->max_speed);  in ci_device_show()
31 	seq_printf(s, "is_otg            = %d\n", gadget->is_otg);  in ci_device_show()
32 	seq_printf(s, "is_a_peripheral   = %d\n", gadget->is_a_peripheral);  in ci_device_show()
33 	seq_printf(s, "b_hnp_enable      = %d\n", gadget->b_hnp_enable);  in ci_device_show()
34 	seq_printf(s, "a_hnp_support     = %d\n", gadget->a_hnp_support);  in ci_device_show()
35 	seq_printf(s, "a_alt_hnp_support = %d\n", gadget->a_alt_hnp_support);  in ci_device_show()
37 		   (gadget->name ? gadget->name : ""));  in ci_device_show()
39 	if (!ci->driver)  in ci_device_show()
43 		       (ci->driver->function ? ci->driver->function : ""));  in ci_device_show()
44 	seq_printf(s, "gadget max speed  = %d\n", ci->driver->max_speed);  in ci_device_show()
53 static int ci_port_test_show(struct seq_file *s, void *data)  in ci_port_test_show()  argument
55 	struct ci_hdrc *ci = s->private;  in ci_port_test_show()
59 	pm_runtime_get_sync(ci->dev);  in ci_port_test_show()
60 	spin_lock_irqsave(&ci->lock, flags);  in ci_port_test_show()
62 	spin_unlock_irqrestore(&ci->lock, flags);  in ci_port_test_show()
63 	pm_runtime_put_sync(ci->dev);  in ci_port_test_show()
76 	struct seq_file *s = file->private_data;  in ci_port_test_write()
77 	struct ci_hdrc *ci = s->private;  in ci_port_test_write()
83 	count = min_t(size_t, sizeof(buf) - 1, count);  in ci_port_test_write()
85 		return -EFAULT;  in ci_port_test_write()
91 		return -EINVAL;  in ci_port_test_write()
94 		return -EBADRQC;  in ci_port_test_write()
96 	pm_runtime_get_sync(ci->dev);  in ci_port_test_write()
97 	spin_lock_irqsave(&ci->lock, flags);  in ci_port_test_write()
99 	spin_unlock_irqrestore(&ci->lock, flags);  in ci_port_test_write()
100 	pm_runtime_put_sync(ci->dev);  in ci_port_test_write()
107 	return single_open(file, ci_port_test_show, inode->i_private);  in ci_port_test_open()
121 static int ci_qheads_show(struct seq_file *s, void *data)  in ci_qheads_show()  argument
123 	struct ci_hdrc *ci = s->private;  in ci_qheads_show()
127 	if (ci->role != CI_ROLE_GADGET) {  in ci_qheads_show()
132 	spin_lock_irqsave(&ci->lock, flags);  in ci_qheads_show()
133 	for (i = 0; i < ci->hw_ep_max/2; i++) {  in ci_qheads_show()
134 		struct ci_hw_ep *hweprx = &ci->ci_hw_ep[i];  in ci_qheads_show()
136 			&ci->ci_hw_ep[i + ci->hw_ep_max/2];  in ci_qheads_show()
138 			   i, (u32)hweprx->qh.dma, (u32)hweptx->qh.dma);  in ci_qheads_show()
141 				   *((u32 *)hweprx->qh.ptr + j),  in ci_qheads_show()
142 				   *((u32 *)hweptx->qh.ptr + j));  in ci_qheads_show()
144 	spin_unlock_irqrestore(&ci->lock, flags);  in ci_qheads_show()
153 static int ci_requests_show(struct seq_file *s, void *data)  in ci_requests_show()  argument
155 	struct ci_hdrc *ci = s->private;  in ci_requests_show()
161 	if (ci->role != CI_ROLE_GADGET) {  in ci_requests_show()
166 	spin_lock_irqsave(&ci->lock, flags);  in ci_requests_show()
167 	for (i = 0; i < ci->hw_ep_max; i++)  in ci_requests_show()
168 		list_for_each_entry(req, &ci->ci_hw_ep[i].qh.queue, queue) {  in ci_requests_show()
169 			list_for_each_entry_safe(node, tmpnode, &req->tds, td) {  in ci_requests_show()
171 					   i % (ci->hw_ep_max / 2),  in ci_requests_show()
172 					   (u32)node->dma,  in ci_requests_show()
173 					   ((i < ci->hw_ep_max/2) ?  in ci_requests_show()
178 						   *((u32 *)node->ptr + j));  in ci_requests_show()
181 	spin_unlock_irqrestore(&ci->lock, flags);  in ci_requests_show()
189 	struct ci_hdrc *ci = s->private;  in ci_otg_show()
195 	fsm = &ci->fsm;  in ci_otg_show()
197 	/* ------ State ----- */  in ci_otg_show()
199 			usb_otg_state_string(ci->otg.state));  in ci_otg_show()
201 	/* ------ State Machine Variables ----- */  in ci_otg_show()
202 	seq_printf(s, "a_bus_drop: %d\n", fsm->a_bus_drop);  in ci_otg_show()
204 	seq_printf(s, "a_bus_req: %d\n", fsm->a_bus_req);  in ci_otg_show()
206 	seq_printf(s, "a_srp_det: %d\n", fsm->a_srp_det);  in ci_otg_show()
208 	seq_printf(s, "a_vbus_vld: %d\n", fsm->a_vbus_vld);  in ci_otg_show()
210 	seq_printf(s, "b_conn: %d\n", fsm->b_conn);  in ci_otg_show()
212 	seq_printf(s, "adp_change: %d\n", fsm->adp_change);  in ci_otg_show()
214 	seq_printf(s, "power_up: %d\n", fsm->power_up);  in ci_otg_show()
216 	seq_printf(s, "a_bus_resume: %d\n", fsm->a_bus_resume);  in ci_otg_show()
218 	seq_printf(s, "a_bus_suspend: %d\n", fsm->a_bus_suspend);  in ci_otg_show()
220 	seq_printf(s, "a_conn: %d\n", fsm->a_conn);  in ci_otg_show()
222 	seq_printf(s, "b_bus_req: %d\n", fsm->b_bus_req);  in ci_otg_show()
224 	seq_printf(s, "b_bus_suspend: %d\n", fsm->b_bus_suspend);  in ci_otg_show()
226 	seq_printf(s, "b_se0_srp: %d\n", fsm->b_se0_srp);  in ci_otg_show()
228 	seq_printf(s, "b_ssend_srp: %d\n", fsm->b_ssend_srp);  in ci_otg_show()
230 	seq_printf(s, "b_sess_vld: %d\n", fsm->b_sess_vld);  in ci_otg_show()
232 	seq_printf(s, "b_srp_done: %d\n", fsm->b_srp_done);  in ci_otg_show()
234 	seq_printf(s, "drv_vbus: %d\n", fsm->drv_vbus);  in ci_otg_show()
236 	seq_printf(s, "loc_conn: %d\n", fsm->loc_conn);  in ci_otg_show()
238 	seq_printf(s, "loc_sof: %d\n", fsm->loc_sof);  in ci_otg_show()
240 	seq_printf(s, "adp_prb: %d\n", fsm->adp_prb);  in ci_otg_show()
242 	seq_printf(s, "id: %d\n", fsm->id);  in ci_otg_show()
244 	seq_printf(s, "protocol: %d\n", fsm->protocol);  in ci_otg_show()
250 static int ci_role_show(struct seq_file *s, void *data)  in ci_role_show()  argument
252 	struct ci_hdrc *ci = s->private;  in ci_role_show()
254 	if (ci->role != CI_ROLE_END)  in ci_role_show()
255 		seq_printf(s, "%s\n", ci_role(ci)->name);  in ci_role_show()
263 	struct seq_file *s = file->private_data;  in ci_role_write()
264 	struct ci_hdrc *ci = s->private;  in ci_role_write()
265 	enum ci_role role;  in ci_role_write()  local
269 	if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))  in ci_role_write()
270 		return -EFAULT;  in ci_role_write()
272 	for (role = CI_ROLE_HOST; role < CI_ROLE_END; role++)  in ci_role_write()
273 		if (ci->roles[role] &&  in ci_role_write()
274 		    !strncmp(buf, ci->roles[role]->name,  in ci_role_write()
275 			     strlen(ci->roles[role]->name)))  in ci_role_write()
278 	if (role == CI_ROLE_END || role == ci->role)  in ci_role_write()
279 		return -EINVAL;  in ci_role_write()
281 	pm_runtime_get_sync(ci->dev);  in ci_role_write()
282 	disable_irq(ci->irq);  in ci_role_write()
284 	ret = ci_role_start(ci, role);  in ci_role_write()
285 	enable_irq(ci->irq);  in ci_role_write()
286 	pm_runtime_put_sync(ci->dev);  in ci_role_write()
293 	return single_open(file, ci_role_show, inode->i_private);  in ci_role_open()
306 	struct ci_hdrc *ci = s->private;  in ci_registers_show()
309 	if (!ci || ci->in_lpm)  in ci_registers_show()
310 		return -EPERM;  in ci_registers_show()
312 	/* ------ Registers ----- */  in ci_registers_show()
328 	if (ci->is_otg) {  in ci_registers_show()
345 	ci->debugfs = debugfs_create_dir(dev_name(ci->dev), usb_debug_root);  in dbg_create_files()
347 	debugfs_create_file("device", S_IRUGO, ci->debugfs, ci,  in dbg_create_files()
349 	debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs, ci,  in dbg_create_files()
351 	debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci,  in dbg_create_files()
353 	debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci,  in dbg_create_files()
357 		debugfs_create_file("otg", S_IRUGO, ci->debugfs, ci,  in dbg_create_files()
361 	debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci,  in dbg_create_files()
363 	debugfs_create_file("registers", S_IRUGO, ci->debugfs, ci,  in dbg_create_files()
373 	debugfs_remove_recursive(ci->debugfs);  in dbg_remove_files()