461 lines
13 KiB
C
461 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Driver for C-Media CMI8328-based soundcards, such as AudioExcel AV500
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* Copyright (c) 2012 Ondrej Zary
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*
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* AudioExcel AV500 card consists of:
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* - CMI8328 - main chip (SB Pro emulation, gameport, OPL3, MPU401, CD-ROM)
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* - CS4231A - WSS codec
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* - Dream SAM9233+GMS950400+RAM+ROM: Wavetable MIDI, connected to MPU401
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*/
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#include <linux/init.h>
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#include <linux/isa.h>
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#include <linux/module.h>
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#include <linux/gameport.h>
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#include <asm/dma.h>
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#include <sound/core.h>
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#include <sound/wss.h>
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#include <sound/opl3.h>
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#include <sound/mpu401.h>
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#define SNDRV_LEGACY_FIND_FREE_IOPORT
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#define SNDRV_LEGACY_FIND_FREE_IRQ
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#define SNDRV_LEGACY_FIND_FREE_DMA
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#include <sound/initval.h>
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MODULE_AUTHOR("Ondrej Zary <linux@rainbow-software.org>");
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MODULE_DESCRIPTION("C-Media CMI8328");
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MODULE_LICENSE("GPL");
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#if IS_ENABLED(CONFIG_GAMEPORT)
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#define SUPPORT_JOYSTICK 1
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#endif
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/* I/O port is configured by jumpers on the card to one of these */
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static const int cmi8328_ports[] = { 0x530, 0xe80, 0xf40, 0x604 };
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#define CMI8328_MAX ARRAY_SIZE(cmi8328_ports)
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static int index[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = -1};
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static char *id[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = NULL};
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static long port[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_PORT};
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static int irq[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_IRQ};
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static int dma1[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_DMA};
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static int dma2[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_DMA};
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static long mpuport[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_PORT};
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static int mpuirq[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = SNDRV_AUTO_IRQ};
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#ifdef SUPPORT_JOYSTICK
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static bool gameport[CMI8328_MAX] = {[0 ... (CMI8328_MAX-1)] = true};
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#endif
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for CMI8328 soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for CMI8328 soundcard.");
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module_param_hw_array(port, long, ioport, NULL, 0444);
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MODULE_PARM_DESC(port, "Port # for CMI8328 driver.");
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module_param_hw_array(irq, int, irq, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for CMI8328 driver.");
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module_param_hw_array(dma1, int, dma, NULL, 0444);
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MODULE_PARM_DESC(dma1, "DMA1 for CMI8328 driver.");
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module_param_hw_array(dma2, int, dma, NULL, 0444);
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MODULE_PARM_DESC(dma2, "DMA2 for CMI8328 driver.");
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module_param_hw_array(mpuport, long, ioport, NULL, 0444);
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MODULE_PARM_DESC(mpuport, "MPU-401 port # for CMI8328 driver.");
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module_param_hw_array(mpuirq, int, irq, NULL, 0444);
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MODULE_PARM_DESC(mpuirq, "IRQ # for CMI8328 MPU-401 port.");
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#ifdef SUPPORT_JOYSTICK
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module_param_array(gameport, bool, NULL, 0444);
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MODULE_PARM_DESC(gameport, "Enable gameport.");
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#endif
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struct snd_cmi8328 {
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u16 port;
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u8 cfg[3];
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u8 wss_cfg;
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struct snd_card *card;
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struct snd_wss *wss;
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#ifdef SUPPORT_JOYSTICK
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struct gameport *gameport;
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#endif
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};
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/* CMI8328 configuration registers */
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#define CFG1 0x61
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#define CFG1_SB_DISABLE (1 << 0)
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#define CFG1_GAMEPORT (1 << 1)
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/*
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* bit 0: SB: 0=enabled, 1=disabled
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* bit 1: gameport: 0=disabled, 1=enabled
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* bits 2-4: SB IRQ: 001=3, 010=5, 011=7, 100=9, 101=10, 110=11
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* bits 5-6: SB DMA: 00=disabled (when SB disabled), 01=DMA0, 10=DMA1, 11=DMA3
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* bit 7: SB port: 0=0x220, 1=0x240
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*/
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#define CFG2 0x62
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#define CFG2_MPU_ENABLE (1 << 2)
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/*
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* bits 0-1: CD-ROM mode: 00=disabled, 01=Panasonic, 10=Sony/Mitsumi/Wearnes,
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11=IDE
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* bit 2: MPU401: 0=disabled, 1=enabled
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* bits 3-4: MPU401 IRQ: 00=3, 01=5, 10=7, 11=9,
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* bits 5-7: MPU401 port: 000=0x300, 001=0x310, 010=0x320, 011=0x330, 100=0x332,
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101=0x334, 110=0x336
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*/
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#define CFG3 0x63
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/*
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* bits 0-2: CD-ROM IRQ: 000=disabled, 001=3, 010=5, 011=7, 100=9, 101=10,
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110=11
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* bits 3-4: CD-ROM DMA: 00=disabled, 01=DMA0, 10=DMA1, 11=DMA3
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* bits 5-7: CD-ROM port: 000=0x300, 001=0x310, 010=0x320, 011=0x330, 100=0x340,
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101=0x350, 110=0x360, 111=0x370
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*/
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static u8 snd_cmi8328_cfg_read(u16 port, u8 reg)
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{
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outb(0x43, port + 3);
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outb(0x21, port + 3);
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outb(reg, port + 3);
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return inb(port);
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}
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static void snd_cmi8328_cfg_write(u16 port, u8 reg, u8 val)
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{
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outb(0x43, port + 3);
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outb(0x21, port + 3);
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outb(reg, port + 3);
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outb(val, port + 3); /* yes, value goes to the same port as index */
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}
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#ifdef CONFIG_PM
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static void snd_cmi8328_cfg_save(u16 port, u8 cfg[])
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{
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cfg[0] = snd_cmi8328_cfg_read(port, CFG1);
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cfg[1] = snd_cmi8328_cfg_read(port, CFG2);
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cfg[2] = snd_cmi8328_cfg_read(port, CFG3);
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}
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static void snd_cmi8328_cfg_restore(u16 port, u8 cfg[])
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{
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snd_cmi8328_cfg_write(port, CFG1, cfg[0]);
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snd_cmi8328_cfg_write(port, CFG2, cfg[1]);
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snd_cmi8328_cfg_write(port, CFG3, cfg[2]);
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}
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#endif /* CONFIG_PM */
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static int snd_cmi8328_mixer(struct snd_wss *chip)
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{
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struct snd_card *card;
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struct snd_ctl_elem_id id1, id2;
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int err;
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card = chip->card;
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memset(&id1, 0, sizeof(id1));
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memset(&id2, 0, sizeof(id2));
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id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
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/* rename AUX0 switch to CD */
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strcpy(id1.name, "Aux Playback Switch");
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strcpy(id2.name, "CD Playback Switch");
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err = snd_ctl_rename_id(card, &id1, &id2);
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if (err < 0) {
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snd_printk(KERN_ERR "error renaming control\n");
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return err;
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}
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/* rename AUX0 volume to CD */
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strcpy(id1.name, "Aux Playback Volume");
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strcpy(id2.name, "CD Playback Volume");
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err = snd_ctl_rename_id(card, &id1, &id2);
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if (err < 0) {
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snd_printk(KERN_ERR "error renaming control\n");
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return err;
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}
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/* rename AUX1 switch to Synth */
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strcpy(id1.name, "Aux Playback Switch");
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id1.index = 1;
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strcpy(id2.name, "Synth Playback Switch");
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err = snd_ctl_rename_id(card, &id1, &id2);
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if (err < 0) {
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snd_printk(KERN_ERR "error renaming control\n");
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return err;
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}
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/* rename AUX1 volume to Synth */
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strcpy(id1.name, "Aux Playback Volume");
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id1.index = 1;
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strcpy(id2.name, "Synth Playback Volume");
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err = snd_ctl_rename_id(card, &id1, &id2);
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if (err < 0) {
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snd_printk(KERN_ERR "error renaming control\n");
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return err;
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}
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return 0;
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}
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/* find index of an item in "-1"-ended array */
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static int array_find(const int array[], int item)
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{
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int i;
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for (i = 0; array[i] != -1; i++)
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if (array[i] == item)
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return i;
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return -1;
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}
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/* the same for long */
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static int array_find_l(const long array[], long item)
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{
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int i;
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for (i = 0; array[i] != -1; i++)
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if (array[i] == item)
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return i;
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return -1;
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}
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static int snd_cmi8328_probe(struct device *pdev, unsigned int ndev)
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{
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struct snd_card *card;
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struct snd_opl3 *opl3;
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struct snd_cmi8328 *cmi;
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#ifdef SUPPORT_JOYSTICK
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struct resource *res;
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#endif
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int err, pos;
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static const long mpu_ports[] = { 0x330, 0x300, 0x310, 0x320, 0x332, 0x334,
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0x336, -1 };
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static const u8 mpu_port_bits[] = { 3, 0, 1, 2, 4, 5, 6 };
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static const int mpu_irqs[] = { 9, 7, 5, 3, -1 };
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static const u8 mpu_irq_bits[] = { 3, 2, 1, 0 };
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static const int irqs[] = { 9, 10, 11, 7, -1 };
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static const u8 irq_bits[] = { 2, 3, 4, 1 };
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static const int dma1s[] = { 3, 1, 0, -1 };
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static const u8 dma_bits[] = { 3, 2, 1 };
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static const int dma2s[][2] = { {1, -1}, {0, -1}, {-1, -1}, {0, -1} };
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u16 port = cmi8328_ports[ndev];
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u8 val;
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/* 0xff is invalid configuration (but settable - hope it isn't set) */
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if (snd_cmi8328_cfg_read(port, CFG1) == 0xff)
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return -ENODEV;
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/* the SB disable bit must NEVER EVER be cleared or the WSS dies */
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snd_cmi8328_cfg_write(port, CFG1, CFG1_SB_DISABLE);
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if (snd_cmi8328_cfg_read(port, CFG1) != CFG1_SB_DISABLE)
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return -ENODEV;
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/* disable everything first */
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snd_cmi8328_cfg_write(port, CFG2, 0); /* disable CDROM and MPU401 */
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snd_cmi8328_cfg_write(port, CFG3, 0); /* disable CDROM IRQ and DMA */
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if (irq[ndev] == SNDRV_AUTO_IRQ) {
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irq[ndev] = snd_legacy_find_free_irq(irqs);
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if (irq[ndev] < 0) {
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snd_printk(KERN_ERR "unable to find a free IRQ\n");
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return -EBUSY;
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}
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}
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if (dma1[ndev] == SNDRV_AUTO_DMA) {
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dma1[ndev] = snd_legacy_find_free_dma(dma1s);
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if (dma1[ndev] < 0) {
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snd_printk(KERN_ERR "unable to find a free DMA1\n");
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return -EBUSY;
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}
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}
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if (dma2[ndev] == SNDRV_AUTO_DMA) {
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dma2[ndev] = snd_legacy_find_free_dma(dma2s[dma1[ndev] % 4]);
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if (dma2[ndev] < 0) {
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snd_printk(KERN_WARNING "unable to find a free DMA2, full-duplex will not work\n");
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dma2[ndev] = -1;
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}
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}
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/* configure WSS IRQ... */
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pos = array_find(irqs, irq[ndev]);
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if (pos < 0) {
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snd_printk(KERN_ERR "invalid IRQ %d\n", irq[ndev]);
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return -EINVAL;
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}
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val = irq_bits[pos] << 3;
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/* ...and DMA... */
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pos = array_find(dma1s, dma1[ndev]);
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if (pos < 0) {
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snd_printk(KERN_ERR "invalid DMA1 %d\n", dma1[ndev]);
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return -EINVAL;
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}
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val |= dma_bits[pos];
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/* ...and DMA2 */
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if (dma2[ndev] >= 0 && dma1[ndev] != dma2[ndev]) {
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pos = array_find(dma2s[dma1[ndev]], dma2[ndev]);
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if (pos < 0) {
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snd_printk(KERN_ERR "invalid DMA2 %d\n", dma2[ndev]);
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return -EINVAL;
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}
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val |= 0x04; /* enable separate capture DMA */
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}
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outb(val, port);
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err = snd_devm_card_new(pdev, index[ndev], id[ndev], THIS_MODULE,
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sizeof(struct snd_cmi8328), &card);
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if (err < 0)
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return err;
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cmi = card->private_data;
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cmi->card = card;
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cmi->port = port;
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cmi->wss_cfg = val;
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err = snd_wss_create(card, port + 4, -1, irq[ndev], dma1[ndev],
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dma2[ndev], WSS_HW_DETECT, 0, &cmi->wss);
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if (err < 0)
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return err;
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err = snd_wss_pcm(cmi->wss, 0);
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if (err < 0)
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return err;
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err = snd_wss_mixer(cmi->wss);
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if (err < 0)
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return err;
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err = snd_cmi8328_mixer(cmi->wss);
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if (err < 0)
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return err;
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if (snd_wss_timer(cmi->wss, 0) < 0)
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snd_printk(KERN_WARNING "error initializing WSS timer\n");
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if (mpuport[ndev] == SNDRV_AUTO_PORT) {
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mpuport[ndev] = snd_legacy_find_free_ioport(mpu_ports, 2);
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if (mpuport[ndev] < 0)
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snd_printk(KERN_ERR "unable to find a free MPU401 port\n");
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}
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if (mpuirq[ndev] == SNDRV_AUTO_IRQ) {
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mpuirq[ndev] = snd_legacy_find_free_irq(mpu_irqs);
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if (mpuirq[ndev] < 0)
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snd_printk(KERN_ERR "unable to find a free MPU401 IRQ\n");
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}
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/* enable and configure MPU401 */
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if (mpuport[ndev] > 0 && mpuirq[ndev] > 0) {
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val = CFG2_MPU_ENABLE;
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pos = array_find_l(mpu_ports, mpuport[ndev]);
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if (pos < 0)
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snd_printk(KERN_WARNING "invalid MPU401 port 0x%lx\n",
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mpuport[ndev]);
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else {
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val |= mpu_port_bits[pos] << 5;
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pos = array_find(mpu_irqs, mpuirq[ndev]);
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if (pos < 0)
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snd_printk(KERN_WARNING "invalid MPU401 IRQ %d\n",
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mpuirq[ndev]);
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else {
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val |= mpu_irq_bits[pos] << 3;
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snd_cmi8328_cfg_write(port, CFG2, val);
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if (snd_mpu401_uart_new(card, 0,
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MPU401_HW_MPU401, mpuport[ndev],
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0, mpuirq[ndev], NULL) < 0)
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snd_printk(KERN_ERR "error initializing MPU401\n");
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}
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}
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}
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/* OPL3 is hardwired to 0x388 and cannot be disabled */
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if (snd_opl3_create(card, 0x388, 0x38a, OPL3_HW_AUTO, 0, &opl3) < 0)
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snd_printk(KERN_ERR "error initializing OPL3\n");
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else
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if (snd_opl3_hwdep_new(opl3, 0, 1, NULL) < 0)
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snd_printk(KERN_WARNING "error initializing OPL3 hwdep\n");
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strcpy(card->driver, "CMI8328");
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strcpy(card->shortname, "C-Media CMI8328");
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sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d,%d",
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card->shortname, cmi->wss->port, irq[ndev], dma1[ndev],
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(dma2[ndev] >= 0) ? dma2[ndev] : dma1[ndev]);
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dev_set_drvdata(pdev, card);
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err = snd_card_register(card);
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if (err < 0)
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return err;
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#ifdef SUPPORT_JOYSTICK
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if (!gameport[ndev])
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return 0;
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/* gameport is hardwired to 0x200 */
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res = devm_request_region(pdev, 0x200, 8, "CMI8328 gameport");
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if (!res)
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snd_printk(KERN_WARNING "unable to allocate gameport I/O port\n");
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else {
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struct gameport *gp = cmi->gameport = gameport_allocate_port();
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if (cmi->gameport) {
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gameport_set_name(gp, "CMI8328 Gameport");
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gameport_set_phys(gp, "%s/gameport0", dev_name(pdev));
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gameport_set_dev_parent(gp, pdev);
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gp->io = 0x200;
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/* Enable gameport */
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snd_cmi8328_cfg_write(port, CFG1,
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CFG1_SB_DISABLE | CFG1_GAMEPORT);
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gameport_register_port(gp);
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}
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}
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#endif
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return 0;
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}
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static void snd_cmi8328_remove(struct device *pdev, unsigned int dev)
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{
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struct snd_card *card = dev_get_drvdata(pdev);
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struct snd_cmi8328 *cmi = card->private_data;
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#ifdef SUPPORT_JOYSTICK
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if (cmi->gameport)
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gameport_unregister_port(cmi->gameport);
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#endif
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/* disable everything */
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snd_cmi8328_cfg_write(cmi->port, CFG1, CFG1_SB_DISABLE);
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snd_cmi8328_cfg_write(cmi->port, CFG2, 0);
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snd_cmi8328_cfg_write(cmi->port, CFG3, 0);
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}
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#ifdef CONFIG_PM
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static int snd_cmi8328_suspend(struct device *pdev, unsigned int n,
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pm_message_t state)
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{
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struct snd_card *card = dev_get_drvdata(pdev);
|
|
struct snd_cmi8328 *cmi;
|
|
|
|
if (!card) /* ignore absent devices */
|
|
return 0;
|
|
cmi = card->private_data;
|
|
snd_cmi8328_cfg_save(cmi->port, cmi->cfg);
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
|
|
cmi->wss->suspend(cmi->wss);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_cmi8328_resume(struct device *pdev, unsigned int n)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(pdev);
|
|
struct snd_cmi8328 *cmi;
|
|
|
|
if (!card) /* ignore absent devices */
|
|
return 0;
|
|
cmi = card->private_data;
|
|
snd_cmi8328_cfg_restore(cmi->port, cmi->cfg);
|
|
outb(cmi->wss_cfg, cmi->port);
|
|
cmi->wss->resume(cmi->wss);
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static struct isa_driver snd_cmi8328_driver = {
|
|
.probe = snd_cmi8328_probe,
|
|
.remove = snd_cmi8328_remove,
|
|
#ifdef CONFIG_PM
|
|
.suspend = snd_cmi8328_suspend,
|
|
.resume = snd_cmi8328_resume,
|
|
#endif
|
|
.driver = {
|
|
.name = "cmi8328"
|
|
},
|
|
};
|
|
|
|
module_isa_driver(snd_cmi8328_driver, CMI8328_MAX);
|