4 * The low level driver for Crystal CS4232 based cards. The CS4232 is a PnP
5 * compatible chip which contains a CS4231A codec, SB emulation, a MPU401
6 * compatible MIDI port, joystick and synthesizer and IDE CD-ROM interfaces.
7 * This is just a temporary driver until full PnP support gets inplemented.
8 * Just the WSS codec, FM synth and the MIDI ports are supported. Other
9 * interfaces are left uninitialized.
11 * Copyright by Hannu Savolainen 1995
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions are
15 * met: 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer. 2.
17 * Redistributions in binary form must reproduce the above copyright notice,
18 * this list of conditions and the following disclaimer in the documentation
19 * and/or other materials provided with the distribution.
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
22 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
25 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <i386/isa/sound/sound_config.h>
37 #if defined(CONFIG_CS4232)
39 #define KEY_PORT 0x279 /* Same as LPT1 status port */
40 #define CSN_NUM 0x99 /* Just a random number */
42 #define CS_OUT(a) outb( KEY_PORT, a)
43 #define CS_OUT2(a, b) {CS_OUT(a);CS_OUT(b);}
44 #define CS_OUT3(a, b, c) {CS_OUT(a);CS_OUT(b);CS_OUT(c);}
46 static int mpu_base = 0, mpu_irq = 0;
47 static int mpu_detected = 0;
50 probe_cs4232_mpu(struct address_info * hw_config)
53 * Just write down the config values.
56 mpu_base = hw_config->io_base;
57 mpu_irq = hw_config->irq;
62 attach_cs4232_mpu(struct address_info * hw_config)
66 static unsigned char crystal_key[] = /* A 32 byte magic key sequence */
68 0x96, 0x35, 0x9a, 0xcd, 0xe6, 0xf3, 0x79, 0xbc,
69 0x5e, 0xaf, 0x57, 0x2b, 0x15, 0x8a, 0xc5, 0xe2,
70 0xf1, 0xf8, 0x7c, 0x3e, 0x9f, 0x4f, 0x27, 0x13,
71 0x09, 0x84, 0x42, 0xa1, 0xd0, 0x68, 0x34, 0x1a
75 probe_cs4232(struct address_info * hw_config)
78 int base = hw_config->io_base, irq = hw_config->irq;
79 int dma1 = hw_config->dma, dma2 = hw_config->dma2;
82 * Verify that the I/O port range is free.
86 printf("cs4232.c: I/O port 0x%03x not free\n", base);
90 * This version of the driver doesn't use the PnP method when
91 * configuring the card but a simplified method defined by Crystal.
92 * This means that just one CS4232 compatible device can exist on the
93 * system. Also this method conflicts with possible PnP support in
94 * the OS. For this reason driver is just a temporary kludge.
98 * Wake up the card by sending a 32 byte Crystal key to the key port.
100 for (i = 0; i < 32; i++)
101 CS_OUT(crystal_key[i]);
104 * Now set the CSN (Card Select Number).
107 CS_OUT2(0x06, CSN_NUM);
110 * Ensure that there is no other codec using the same address.
113 CS_OUT2(0x15, 0x00); /* Select logical device 0 (WSS/SB/FM) */
114 CS_OUT2(0x33, 0x00); /* Inactivate logical dev 0 */
117 * Then set some config bytes. First logical device 0
120 CS_OUT2(0x15, 0x00); /* Select logical device 0 (WSS/SB/FM) */
121 CS_OUT3(0x47, (base >> 8) & 0xff, base & 0xff); /* WSSbase */
123 if (0) /* Not free */
124 CS_OUT3(0x48, 0x00, 0x00) /* FMbase off */
126 CS_OUT3(0x48, 0x03, 0x88); /* FMbase 0x388 */
128 CS_OUT3(0x42, 0x00, 0x00); /* SBbase off */
129 CS_OUT2(0x22, irq); /* SB+WSS IRQ */
130 CS_OUT2(0x2a, dma1); /* SB+WSS DMA */
133 CS_OUT2(0x25, dma2) /* WSS DMA2 */
135 CS_OUT2(0x25, 4); /* No WSS DMA2 */
137 CS_OUT2(0x33, 0x01); /* Activate logical dev 0 */
140 * Initialize logical device 3 (MPU)
143 #if (defined(CONFIG_MPU401) || defined(CONFIG_MPU_EMU)) && defined(CONFIG_MIDI)
144 if (mpu_base != 0 && mpu_irq != 0) {
145 CS_OUT2(0x15, 0x03); /* Select logical device 3 (MPU) */
146 CS_OUT3(0x47, (mpu_base >> 8) & 0xff, mpu_base & 0xff); /* MPUbase */
147 CS_OUT2(0x22, mpu_irq); /* MPU IRQ */
148 CS_OUT2(0x33, 0x01); /* Activate logical dev 3 */
153 * Finally activate the chip
158 * Then try to detect the codec part of the chip
161 return ad1848_detect(hw_config->io_base, NULL, hw_config->osp);
165 attach_cs4232(struct address_info * hw_config)
167 int base = hw_config->io_base, irq = hw_config->irq;
168 int dma1 = hw_config->dma, dma2 = hw_config->dma2;
173 ad1848_init("CS4232", base,
175 dma1, /* Playback DMA */
176 dma2, /* Capture DMA */
180 #if (defined(CONFIG_MPU401) || defined(CONFIG_MPU_EMU)) && defined(CONFIG_MIDI)
181 if (mpu_base != 0 && mpu_irq != 0) {
182 static struct address_info hw_config2 =
183 {0}; /* Ensure it's initialized */
185 hw_config2.io_base = mpu_base;
186 hw_config2.irq = mpu_irq;
188 hw_config2.dma2 = -1;
189 hw_config2.always_detect = 0;
190 hw_config2.name = NULL;
191 hw_config2.card_subtype = 0;
192 hw_config2.osp = hw_config->osp;
194 if (probe_mpu401(&hw_config2)) {
196 attach_mpu401(&hw_config2);
198 mpu_base = mpu_irq = 0;