// SPDX-License-Identifier: GPL-2.0/* *	linux/arch/alpha/kernel/es1888.c * * Init the built-in ES1888 sound chip (SB16 compatible) */ #include <linux/init.h>#include <asm/io.h>#include "proto.h" void __inites1888_init(void){	/* Sequence of IO reads to init the audio controller */	inb(0x0229);	inb(0x0229);	inb(0x0229);	inb(0x022b);	inb(0x0229);	inb(0x022b);	inb(0x0229);	inb(0x0229);	inb(0x022b);	inb(0x0229);	inb(0x0220); /* This sets the base address to 0x220 */ 	/* Sequence to set DMA channels */	outb(0x01, 0x0226);		/* reset */	inb(0x0226);			/* pause */	outb(0x00, 0x0226);		/* release reset */	while (!(inb(0x022e) & 0x80))	/* wait for bit 7 to assert*/		continue;	inb(0x022a);			/* pause */	outb(0xc6, 0x022c);		/* enable extended mode */	inb(0x022a);			/* pause, also forces the write */	while (inb(0x022c) & 0x80)	/* wait for bit 7 to deassert */		continue;	outb(0xb1, 0x022c);		/* setup for write to Interrupt CR */	while (inb(0x022c) & 0x80)	/* wait for bit 7 to deassert */		continue;	outb(0x14, 0x022c);		/* set IRQ 5 */	while (inb(0x022c) & 0x80)	/* wait for bit 7 to deassert */		continue;	outb(0xb2, 0x022c);		/* setup for write to DMA CR */	while (inb(0x022c) & 0x80)	/* wait for bit 7 to deassert */		continue;	outb(0x18, 0x022c);		/* set DMA channel 1 */	inb(0x022c);			/* force the write */}