a0f70ac053
deltas, but it is possible since I had a few merge conflicts over the last few days while this has been sitting ready to go. (Part 1 was committed to the config files, but cvs aborted grrr..) Approved by: core
205 lines
5.9 KiB
C
205 lines
5.9 KiB
C
/*
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* sound/cs4232.c
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*
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* The low level driver for Crystal CS4232 based cards. The CS4232 is a PnP
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* compatible chip which contains a CS4231A codec, SB emulation, a MPU401
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* compatible MIDI port, joystick and synthesizer and IDE CD-ROM interfaces.
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* This is just a temporary driver until full PnP support gets inplemented.
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* Just the WSS codec, FM synth and the MIDI ports are supported. Other
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* interfaces are left uninitialized.
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*
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* Copyright by Hannu Savolainen 1995
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <i386/isa/sound/sound_config.h>
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#if defined(CONFIG_CS4232)
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#define KEY_PORT 0x279 /* Same as LPT1 status port */
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#define CSN_NUM 0x99 /* Just a random number */
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#define CS_OUT(a) outb( KEY_PORT, a)
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#define CS_OUT2(a, b) {CS_OUT(a);CS_OUT(b);}
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#define CS_OUT3(a, b, c) {CS_OUT(a);CS_OUT(b);CS_OUT(c);}
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static int mpu_base = 0, mpu_irq = 0;
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static int mpu_detected = 0;
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int
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probe_cs4232_mpu(struct address_info * hw_config)
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{
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/*
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* Just write down the config values.
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*/
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mpu_base = hw_config->io_base;
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mpu_irq = hw_config->irq;
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return 0;
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}
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void
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attach_cs4232_mpu(struct address_info * hw_config)
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{
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}
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static unsigned char crystal_key[] = /* A 32 byte magic key sequence */
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{
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0x96, 0x35, 0x9a, 0xcd, 0xe6, 0xf3, 0x79, 0xbc,
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0x5e, 0xaf, 0x57, 0x2b, 0x15, 0x8a, 0xc5, 0xe2,
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0xf1, 0xf8, 0x7c, 0x3e, 0x9f, 0x4f, 0x27, 0x13,
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0x09, 0x84, 0x42, 0xa1, 0xd0, 0x68, 0x34, 0x1a
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};
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int
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probe_cs4232(struct address_info * hw_config)
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{
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int i;
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int base = hw_config->io_base, irq = hw_config->irq;
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int dma1 = hw_config->dma, dma2 = hw_config->dma2;
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/*
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* Verify that the I/O port range is free.
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*/
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if (0) {
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printf("cs4232.c: I/O port 0x%03x not free\n", base);
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return 0;
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}
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/*
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* This version of the driver doesn't use the PnP method when
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* configuring the card but a simplified method defined by Crystal.
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* This means that just one CS4232 compatible device can exist on the
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* system. Also this method conflicts with possible PnP support in
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* the OS. For this reason driver is just a temporary kludge.
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*/
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/*
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* Wake up the card by sending a 32 byte Crystal key to the key port.
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*/
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for (i = 0; i < 32; i++)
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CS_OUT(crystal_key[i]);
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/*
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* Now set the CSN (Card Select Number).
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*/
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CS_OUT2(0x06, CSN_NUM);
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/*
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* Ensure that there is no other codec using the same address.
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*/
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CS_OUT2(0x15, 0x00); /* Select logical device 0 (WSS/SB/FM) */
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CS_OUT2(0x33, 0x00); /* Inactivate logical dev 0 */
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/*
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* Then set some config bytes. First logical device 0
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*/
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CS_OUT2(0x15, 0x00); /* Select logical device 0 (WSS/SB/FM) */
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CS_OUT3(0x47, (base >> 8) & 0xff, base & 0xff); /* WSSbase */
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if (0) /* Not free */
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CS_OUT3(0x48, 0x00, 0x00) /* FMbase off */
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else
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CS_OUT3(0x48, 0x03, 0x88); /* FMbase 0x388 */
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CS_OUT3(0x42, 0x00, 0x00); /* SBbase off */
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CS_OUT2(0x22, irq); /* SB+WSS IRQ */
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CS_OUT2(0x2a, dma1); /* SB+WSS DMA */
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if (dma2 != -1)
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CS_OUT2(0x25, dma2) /* WSS DMA2 */
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else
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CS_OUT2(0x25, 4); /* No WSS DMA2 */
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CS_OUT2(0x33, 0x01); /* Activate logical dev 0 */
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/*
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* Initialize logical device 3 (MPU)
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*/
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#if (defined(CONFIG_MPU401) || defined(CONFIG_MPU_EMU)) && defined(CONFIG_MIDI)
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if (mpu_base != 0 && mpu_irq != 0) {
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CS_OUT2(0x15, 0x03); /* Select logical device 3 (MPU) */
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CS_OUT3(0x47, (mpu_base >> 8) & 0xff, mpu_base & 0xff); /* MPUbase */
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CS_OUT2(0x22, mpu_irq); /* MPU IRQ */
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CS_OUT2(0x33, 0x01); /* Activate logical dev 3 */
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}
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#endif
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/*
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* Finally activate the chip
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*/
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CS_OUT(0x79);
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/*
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* Then try to detect the codec part of the chip
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*/
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return ad1848_detect(hw_config->io_base, NULL, hw_config->osp);
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}
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void
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attach_cs4232(struct address_info * hw_config)
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{
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int base = hw_config->io_base, irq = hw_config->irq;
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int dma1 = hw_config->dma, dma2 = hw_config->dma2;
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if (dma2 == -1)
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dma2 = dma1;
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ad1848_init("CS4232", base,
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irq,
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dma1, /* Playback DMA */
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dma2, /* Capture DMA */
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0,
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hw_config->osp);
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#if (defined(CONFIG_MPU401) || defined(CONFIG_MPU_EMU)) && defined(CONFIG_MIDI)
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if (mpu_base != 0 && mpu_irq != 0) {
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static struct address_info hw_config2 =
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{0}; /* Ensure it's initialized */
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hw_config2.io_base = mpu_base;
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hw_config2.irq = mpu_irq;
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hw_config2.dma = -1;
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hw_config2.dma2 = -1;
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hw_config2.always_detect = 0;
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hw_config2.name = NULL;
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hw_config2.card_subtype = 0;
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hw_config2.osp = hw_config->osp;
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if (probe_mpu401(&hw_config2)) {
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mpu_detected = 1;
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attach_mpu401(&hw_config2);
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} else {
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mpu_base = mpu_irq = 0;
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}
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}
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#endif
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}
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#endif
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