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471 lines
13 KiB
471 lines
13 KiB
// 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 <[email protected]>"); |
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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_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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goto error; |
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err = snd_wss_pcm(cmi->wss, 0); |
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if (err < 0) |
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goto error; |
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err = snd_wss_mixer(cmi->wss); |
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if (err < 0) |
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goto error; |
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err = snd_cmi8328_mixer(cmi->wss); |
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if (err < 0) |
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goto error; |
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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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goto error; |
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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 = request_region(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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release_and_free_resource(res); |
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else { |
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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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gameport_set_port_data(gp, res); |
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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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error: |
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snd_card_free(card); |
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return err; |
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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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struct resource *res = gameport_get_port_data(cmi->gameport); |
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gameport_unregister_port(cmi->gameport); |
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release_and_free_resource(res); |
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} |
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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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snd_card_free(card); |
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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); |
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struct snd_cmi8328 *cmi; |
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if (!card) /* ignore absent devices */ |
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return 0; |
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cmi = card->private_data; |
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snd_cmi8328_cfg_save(cmi->port, cmi->cfg); |
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snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
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cmi->wss->suspend(cmi->wss); |
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return 0; |
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} |
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static int snd_cmi8328_resume(struct device *pdev, unsigned int n) |
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{ |
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struct snd_card *card = dev_get_drvdata(pdev); |
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struct snd_cmi8328 *cmi; |
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if (!card) /* ignore absent devices */ |
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return 0; |
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cmi = card->private_data; |
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snd_cmi8328_cfg_restore(cmi->port, cmi->cfg); |
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outb(cmi->wss_cfg, cmi->port); |
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cmi->wss->resume(cmi->wss); |
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snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
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return 0; |
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} |
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#endif |
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static struct isa_driver snd_cmi8328_driver = { |
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.probe = snd_cmi8328_probe, |
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.remove = snd_cmi8328_remove, |
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#ifdef CONFIG_PM |
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.suspend = snd_cmi8328_suspend, |
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.resume = snd_cmi8328_resume, |
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#endif |
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.driver = { |
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.name = "cmi8328" |
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}, |
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}; |
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module_isa_driver(snd_cmi8328_driver, CMI8328_MAX);
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