1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Functions for the OPL4 proc file
15 	struct snd_opl4 *opl4 = entry->private_data;  in snd_opl4_mem_proc_open()
17 	mutex_lock(&opl4->access_mutex);  in snd_opl4_mem_proc_open()
18 	if (opl4->memory_access) {  in snd_opl4_mem_proc_open()
19 		mutex_unlock(&opl4->access_mutex);  in snd_opl4_mem_proc_open()
20 		return -EBUSY;  in snd_opl4_mem_proc_open()
22 	opl4->memory_access++;  in snd_opl4_mem_proc_open()
23 	mutex_unlock(&opl4->access_mutex);  in snd_opl4_mem_proc_open()
30 	struct snd_opl4 *opl4 = entry->private_data;  in snd_opl4_mem_proc_release()
32 	mutex_lock(&opl4->access_mutex);  in snd_opl4_mem_proc_release()
33 	opl4->memory_access--;  in snd_opl4_mem_proc_release()
34 	mutex_unlock(&opl4->access_mutex);  in snd_opl4_mem_proc_release()
43 	struct snd_opl4 *opl4 = entry->private_data;  in snd_opl4_mem_proc_read()
48 		return -ENOMEM;  in snd_opl4_mem_proc_read()
52 		return -EFAULT;  in snd_opl4_mem_proc_read()
64 	struct snd_opl4 *opl4 = entry->private_data;  in snd_opl4_mem_proc_write()
69 		return -ENOMEM;  in snd_opl4_mem_proc_write()
72 		return -EFAULT;  in snd_opl4_mem_proc_write()
90 	entry = snd_info_create_card_entry(opl4->card, "opl4-mem", opl4->card->proc_root);  in snd_opl4_create_proc()
92 		if (opl4->hardware < OPL3_HW_OPL4_ML) {  in snd_opl4_create_proc()
93 			/* OPL4 can access 4 MB external ROM/SRAM */  in snd_opl4_create_proc()
94 			entry->mode |= 0200;  in snd_opl4_create_proc()
95 			entry->size = 4 * 1024 * 1024;  in snd_opl4_create_proc()
97 			/* OPL4-ML has 1 MB internal ROM */  in snd_opl4_create_proc()
98 			entry->size = 1 * 1024 * 1024;  in snd_opl4_create_proc()
100 		entry->content = SNDRV_INFO_CONTENT_DATA;  in snd_opl4_create_proc()
101 		entry->c.ops = &snd_opl4_mem_proc_ops;  in snd_opl4_create_proc()
102 		entry->module = THIS_MODULE;  in snd_opl4_create_proc()
103 		entry->private_data = opl4;  in snd_opl4_create_proc()
105 	opl4->proc_entry = entry;  in snd_opl4_create_proc()
111 	snd_info_free_entry(opl4->proc_entry);  in snd_opl4_free_proc()