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1da177e4 LT |
1 | /* |
2 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> | |
3 | * Routines for control of MPU-401 in UART mode | |
4 | * | |
5 | * Modified for the Aureal Vortex based Soundcards | |
6 | * by Manuel Jander (mjande@embedded.cl). | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <sound/driver.h> | |
25 | #include <linux/time.h> | |
26 | #include <linux/init.h> | |
27 | #include <sound/core.h> | |
28 | #include <sound/mpu401.h> | |
29 | #include "au88x0.h" | |
30 | ||
31 | /* Check for mpu401 mmio support. */ | |
32 | /* MPU401 legacy support is only provided as a emergency fallback * | |
33 | * for older versions of ALSA. Its usage is strongly discouraged. */ | |
34 | #ifndef MPU401_HW_AUREAL | |
35 | #define VORTEX_MPU401_LEGACY | |
36 | #endif | |
37 | ||
38 | /* Vortex MPU401 defines. */ | |
39 | #define MIDI_CLOCK_DIV 0x61 | |
40 | /* Standart MPU401 defines. */ | |
41 | #define MPU401_RESET 0xff | |
42 | #define MPU401_ENTER_UART 0x3f | |
43 | #define MPU401_ACK 0xfe | |
44 | ||
45 | static int __devinit snd_vortex_midi(vortex_t * vortex) | |
46 | { | |
2fd16874 | 47 | struct snd_rawmidi *rmidi; |
1da177e4 | 48 | int temp, mode; |
2fd16874 | 49 | struct snd_mpu401 *mpu; |
d5a31b8b | 50 | unsigned long port; |
1da177e4 LT |
51 | |
52 | #ifdef VORTEX_MPU401_LEGACY | |
53 | /* EnableHardCodedMPU401Port() */ | |
54 | /* Enable Legacy MIDI Interface port. */ | |
55 | port = (0x03 << 5); /* FIXME: static address. 0x330 */ | |
56 | temp = | |
57 | (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) | | |
58 | CTRL_MIDI_EN | port; | |
59 | hwwrite(vortex->mmio, VORTEX_CTRL, temp); | |
60 | #else | |
61 | /* Disable Legacy MIDI Interface port. */ | |
62 | temp = | |
63 | (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) & | |
64 | ~CTRL_MIDI_EN; | |
65 | hwwrite(vortex->mmio, VORTEX_CTRL, temp); | |
66 | #endif | |
67 | /* Mpu401UartInit() */ | |
68 | mode = 1; | |
69 | temp = hwread(vortex->mmio, VORTEX_CTRL2) & 0xffff00cf; | |
70 | temp |= (MIDI_CLOCK_DIV << 8) | ((mode >> 24) & 0xff) << 4; | |
71 | hwwrite(vortex->mmio, VORTEX_CTRL2, temp); | |
72 | hwwrite(vortex->mmio, VORTEX_MIDI_CMD, MPU401_RESET); | |
1da177e4 LT |
73 | |
74 | /* Check if anything is OK. */ | |
75 | temp = hwread(vortex->mmio, VORTEX_MIDI_DATA); | |
76 | if (temp != MPU401_ACK /*0xfe */ ) { | |
77 | printk(KERN_ERR "midi port doesn't acknowledge!\n"); | |
78 | return -ENODEV; | |
79 | } | |
80 | /* Enable MPU401 interrupts. */ | |
81 | hwwrite(vortex->mmio, VORTEX_IRQ_CTRL, | |
82 | hwread(vortex->mmio, VORTEX_IRQ_CTRL) | IRQ_MIDI); | |
83 | ||
84 | /* Create MPU401 instance. */ | |
85 | #ifdef VORTEX_MPU401_LEGACY | |
86 | if ((temp = | |
87 | snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_MPU401, 0x330, | |
88 | 0, 0, 0, &rmidi)) != 0) { | |
89 | hwwrite(vortex->mmio, VORTEX_CTRL, | |
90 | (hwread(vortex->mmio, VORTEX_CTRL) & | |
91 | ~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN); | |
92 | return temp; | |
93 | } | |
94 | #else | |
97c67b65 | 95 | port = (unsigned long)(vortex->mmio + VORTEX_MIDI_DATA); |
1da177e4 LT |
96 | if ((temp = |
97 | snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_AUREAL, port, | |
302e4c2f TI |
98 | MPU401_INFO_INTEGRATED | MPU401_INFO_MMIO, |
99 | 0, 0, &rmidi)) != 0) { | |
1da177e4 LT |
100 | hwwrite(vortex->mmio, VORTEX_CTRL, |
101 | (hwread(vortex->mmio, VORTEX_CTRL) & | |
102 | ~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN); | |
103 | return temp; | |
104 | } | |
105 | mpu = rmidi->private_data; | |
97c67b65 | 106 | mpu->cport = (unsigned long)(vortex->mmio + VORTEX_MIDI_CMD); |
1da177e4 | 107 | #endif |
520290e4 AH |
108 | /* Overwrite MIDI name */ |
109 | snprintf(rmidi->name, sizeof(rmidi->name), "%s MIDI %d", CARD_NAME_SHORT , vortex->card->number); | |
110 | ||
1da177e4 LT |
111 | vortex->rmidi = rmidi; |
112 | return 0; | |
113 | } |