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8a371840f8
CC [M] sound/arm/aaci.o sound/arm/aaci.c:729: error: parse error before '*' token sound/arm/aaci.c:731: warning: function declaration isn't a prototype ... sound/arm/aaci.c:786: error: parse error before '*' token sound/arm/aaci.c:786: warning: function declaration isn't a prototype ... sound/arm/aaci.c:827: error: parse error before '*' token sound/arm/aaci.c:828: warning: function declaration isn't a prototype ... sound/arm/aaci.c:845: error: parse error before "aaci_capture_ops" sound/arm/aaci.c:845: warning: type defaults to `int' in declaration of `aaci_capture_ops' Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
1208 lines
27 KiB
C
1208 lines
27 KiB
C
/*
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* linux/sound/arm/aaci.c - ARM PrimeCell AACI PL041 driver
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*
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* Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Documentation: ARM DDI 0173B
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/device.h>
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#include <linux/spinlock.h>
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#include <linux/interrupt.h>
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#include <linux/err.h>
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#include <linux/amba/bus.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/sizes.h>
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#include <sound/driver.h>
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#include <sound/core.h>
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#include <sound/initval.h>
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#include <sound/ac97_codec.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include "aaci.h"
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#include "devdma.h"
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#define DRIVER_NAME "aaci-pl041"
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/*
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* PM support is not complete. Turn it off.
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*/
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#undef CONFIG_PM
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static void aaci_ac97_select_codec(struct aaci *aaci, struct snd_ac97 *ac97)
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{
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u32 v, maincr = aaci->maincr | MAINCR_SCRA(ac97->num);
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/*
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* Ensure that the slot 1/2 RX registers are empty.
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*/
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v = readl(aaci->base + AACI_SLFR);
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if (v & SLFR_2RXV)
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readl(aaci->base + AACI_SL2RX);
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if (v & SLFR_1RXV)
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readl(aaci->base + AACI_SL1RX);
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writel(maincr, aaci->base + AACI_MAINCR);
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}
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/*
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* P29:
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* The recommended use of programming the external codec through slot 1
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* and slot 2 data is to use the channels during setup routines and the
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* slot register at any other time. The data written into slot 1, slot 2
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* and slot 12 registers is transmitted only when their corresponding
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* SI1TxEn, SI2TxEn and SI12TxEn bits are set in the AACI_MAINCR
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* register.
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*/
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static void aaci_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
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unsigned short val)
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{
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struct aaci *aaci = ac97->private_data;
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u32 v;
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int timeout = 5000;
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if (ac97->num >= 4)
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return;
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mutex_lock(&aaci->ac97_sem);
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aaci_ac97_select_codec(aaci, ac97);
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/*
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* P54: You must ensure that AACI_SL2TX is always written
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* to, if required, before data is written to AACI_SL1TX.
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*/
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writel(val << 4, aaci->base + AACI_SL2TX);
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writel(reg << 12, aaci->base + AACI_SL1TX);
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/*
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* Wait for the transmission of both slots to complete.
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*/
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do {
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v = readl(aaci->base + AACI_SLFR);
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} while ((v & (SLFR_1TXB|SLFR_2TXB)) && timeout--);
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if (!timeout)
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dev_err(&aaci->dev->dev,
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"timeout waiting for write to complete\n");
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mutex_unlock(&aaci->ac97_sem);
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}
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/*
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* Read an AC'97 register.
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*/
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static unsigned short aaci_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
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{
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struct aaci *aaci = ac97->private_data;
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u32 v;
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int timeout = 5000;
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int retries = 10;
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if (ac97->num >= 4)
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return ~0;
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mutex_lock(&aaci->ac97_sem);
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aaci_ac97_select_codec(aaci, ac97);
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/*
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* Write the register address to slot 1.
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*/
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writel((reg << 12) | (1 << 19), aaci->base + AACI_SL1TX);
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/*
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* Wait for the transmission to complete.
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*/
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do {
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v = readl(aaci->base + AACI_SLFR);
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} while ((v & SLFR_1TXB) && timeout--);
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if (!timeout) {
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dev_err(&aaci->dev->dev, "timeout on slot 1 TX busy\n");
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v = ~0;
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goto out;
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}
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/*
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* Give the AC'97 codec more than enough time
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* to respond. (42us = ~2 frames at 48kHz.)
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*/
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udelay(42);
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/*
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* Wait for slot 2 to indicate data.
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*/
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timeout = 5000;
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do {
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cond_resched();
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v = readl(aaci->base + AACI_SLFR) & (SLFR_1RXV|SLFR_2RXV);
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} while ((v != (SLFR_1RXV|SLFR_2RXV)) && timeout--);
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if (!timeout) {
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dev_err(&aaci->dev->dev, "timeout on RX valid\n");
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v = ~0;
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goto out;
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}
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do {
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v = readl(aaci->base + AACI_SL1RX) >> 12;
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if (v == reg) {
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v = readl(aaci->base + AACI_SL2RX) >> 4;
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break;
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} else if (--retries) {
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dev_warn(&aaci->dev->dev,
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"ac97 read back fail. retry\n");
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continue;
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} else {
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dev_warn(&aaci->dev->dev,
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"wrong ac97 register read back (%x != %x)\n",
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v, reg);
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v = ~0;
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}
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} while (retries);
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out:
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mutex_unlock(&aaci->ac97_sem);
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return v;
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}
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static inline void aaci_chan_wait_ready(struct aaci_runtime *aacirun)
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{
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u32 val;
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int timeout = 5000;
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do {
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val = readl(aacirun->base + AACI_SR);
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} while (val & (SR_TXB|SR_RXB) && timeout--);
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}
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/*
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* Interrupt support.
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*/
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static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
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{
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if (mask & ISR_ORINTR) {
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dev_warn(&aaci->dev->dev, "RX overrun on chan %d\n", channel);
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writel(ICLR_RXOEC1 << channel, aaci->base + AACI_INTCLR);
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}
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if (mask & ISR_RXTOINTR) {
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dev_warn(&aaci->dev->dev, "RX timeout on chan %d\n", channel);
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writel(ICLR_RXTOFEC1 << channel, aaci->base + AACI_INTCLR);
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}
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if (mask & ISR_RXINTR) {
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struct aaci_runtime *aacirun = &aaci->capture;
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void *ptr;
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if (!aacirun->substream || !aacirun->start) {
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dev_warn(&aaci->dev->dev, "RX interrupt???");
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writel(0, aacirun->base + AACI_IE);
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return;
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}
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ptr = aacirun->ptr;
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do {
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unsigned int len = aacirun->fifosz;
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u32 val;
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if (aacirun->bytes <= 0) {
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aacirun->bytes += aacirun->period;
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aacirun->ptr = ptr;
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spin_unlock(&aaci->lock);
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snd_pcm_period_elapsed(aacirun->substream);
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spin_lock(&aaci->lock);
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}
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if (!(aacirun->cr & CR_EN))
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break;
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val = readl(aacirun->base + AACI_SR);
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if (!(val & SR_RXHF))
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break;
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if (!(val & SR_RXFF))
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len >>= 1;
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aacirun->bytes -= len;
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/* reading 16 bytes at a time */
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for( ; len > 0; len -= 16) {
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asm(
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"ldmia %1, {r0, r1, r2, r3}\n\t"
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"stmia %0!, {r0, r1, r2, r3}"
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: "+r" (ptr)
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: "r" (aacirun->fifo)
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: "r0", "r1", "r2", "r3", "cc");
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if (ptr >= aacirun->end)
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ptr = aacirun->start;
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}
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} while(1);
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aacirun->ptr = ptr;
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}
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if (mask & ISR_URINTR) {
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dev_dbg(&aaci->dev->dev, "TX underrun on chan %d\n", channel);
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writel(ICLR_TXUEC1 << channel, aaci->base + AACI_INTCLR);
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}
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if (mask & ISR_TXINTR) {
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struct aaci_runtime *aacirun = &aaci->playback;
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void *ptr;
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if (!aacirun->substream || !aacirun->start) {
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dev_warn(&aaci->dev->dev, "TX interrupt???");
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writel(0, aacirun->base + AACI_IE);
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return;
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}
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ptr = aacirun->ptr;
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do {
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unsigned int len = aacirun->fifosz;
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u32 val;
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if (aacirun->bytes <= 0) {
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aacirun->bytes += aacirun->period;
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aacirun->ptr = ptr;
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spin_unlock(&aaci->lock);
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snd_pcm_period_elapsed(aacirun->substream);
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spin_lock(&aaci->lock);
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}
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if (!(aacirun->cr & CR_EN))
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break;
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val = readl(aacirun->base + AACI_SR);
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if (!(val & SR_TXHE))
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break;
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if (!(val & SR_TXFE))
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len >>= 1;
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aacirun->bytes -= len;
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/* writing 16 bytes at a time */
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for ( ; len > 0; len -= 16) {
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asm(
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"ldmia %0!, {r0, r1, r2, r3}\n\t"
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"stmia %1, {r0, r1, r2, r3}"
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: "+r" (ptr)
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: "r" (aacirun->fifo)
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: "r0", "r1", "r2", "r3", "cc");
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if (ptr >= aacirun->end)
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ptr = aacirun->start;
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}
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} while (1);
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aacirun->ptr = ptr;
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}
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}
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static irqreturn_t aaci_irq(int irq, void *devid)
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{
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struct aaci *aaci = devid;
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u32 mask;
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int i;
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spin_lock(&aaci->lock);
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mask = readl(aaci->base + AACI_ALLINTS);
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if (mask) {
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u32 m = mask;
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for (i = 0; i < 4; i++, m >>= 7) {
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if (m & 0x7f) {
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aaci_fifo_irq(aaci, i, m);
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}
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}
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}
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spin_unlock(&aaci->lock);
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return mask ? IRQ_HANDLED : IRQ_NONE;
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}
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|
|
|
|
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/*
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* ALSA support.
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*/
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struct aaci_stream {
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unsigned char codec_idx;
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unsigned char rate_idx;
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};
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static struct aaci_stream aaci_streams[] = {
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[ACSTREAM_FRONT] = {
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.codec_idx = 0,
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.rate_idx = AC97_RATES_FRONT_DAC,
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},
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[ACSTREAM_SURROUND] = {
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.codec_idx = 0,
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.rate_idx = AC97_RATES_SURR_DAC,
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},
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[ACSTREAM_LFE] = {
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.codec_idx = 0,
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.rate_idx = AC97_RATES_LFE_DAC,
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},
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};
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static inline unsigned int aaci_rate_mask(struct aaci *aaci, int streamid)
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{
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struct aaci_stream *s = aaci_streams + streamid;
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return aaci->ac97_bus->codec[s->codec_idx]->rates[s->rate_idx];
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}
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static unsigned int rate_list[] = {
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5512, 8000, 11025, 16000, 22050, 32000, 44100,
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48000, 64000, 88200, 96000, 176400, 192000
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};
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/*
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* Double-rate rule: we can support double rate iff channels == 2
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* (unimplemented)
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*/
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static int
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aaci_rule_rate_by_channels(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *rule)
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{
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struct aaci *aaci = rule->private;
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unsigned int rate_mask = SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_5512;
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struct snd_interval *c = hw_param_interval(p, SNDRV_PCM_HW_PARAM_CHANNELS);
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switch (c->max) {
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case 6:
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rate_mask &= aaci_rate_mask(aaci, ACSTREAM_LFE);
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case 4:
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rate_mask &= aaci_rate_mask(aaci, ACSTREAM_SURROUND);
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case 2:
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rate_mask &= aaci_rate_mask(aaci, ACSTREAM_FRONT);
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}
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return snd_interval_list(hw_param_interval(p, rule->var),
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ARRAY_SIZE(rate_list), rate_list,
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rate_mask);
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}
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static struct snd_pcm_hardware aaci_hw_info = {
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.info = SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_RESUME,
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|
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/*
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* ALSA doesn't support 18-bit or 20-bit packed into 32-bit
|
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* words. It also doesn't support 12-bit at all.
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*/
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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|
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/* should this be continuous or knot? */
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.rates = SNDRV_PCM_RATE_CONTINUOUS,
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.rate_max = 48000,
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.rate_min = 4000,
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.channels_min = 2,
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.channels_max = 6,
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.buffer_bytes_max = 64 * 1024,
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.period_bytes_min = 256,
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.period_bytes_max = PAGE_SIZE,
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.periods_min = 4,
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.periods_max = PAGE_SIZE / 16,
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};
|
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|
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static int __aaci_pcm_open(struct aaci *aaci,
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struct snd_pcm_substream *substream,
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struct aaci_runtime *aacirun)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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int ret;
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|
|
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aacirun->substream = substream;
|
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runtime->private_data = aacirun;
|
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runtime->hw = aaci_hw_info;
|
|
|
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/*
|
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* FIXME: ALSA specifies fifo_size in bytes. If we're in normal
|
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* mode, each 32-bit word contains one sample. If we're in
|
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* compact mode, each 32-bit word contains two samples, effectively
|
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* halving the FIFO size. However, we don't know for sure which
|
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* we'll be using at this point. We set this to the lower limit.
|
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*/
|
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runtime->hw.fifo_size = aaci->fifosize * 2;
|
|
|
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/*
|
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* Add rule describing hardware rate dependency
|
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* on the number of channels.
|
|
*/
|
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ret = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
|
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aaci_rule_rate_by_channels, aaci,
|
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SNDRV_PCM_HW_PARAM_CHANNELS,
|
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SNDRV_PCM_HW_PARAM_RATE, -1);
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = request_irq(aaci->dev->irq[0], aaci_irq, IRQF_SHARED|IRQF_DISABLED,
|
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DRIVER_NAME, aaci);
|
|
if (ret)
|
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goto out;
|
|
|
|
return 0;
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* Common ALSA stuff
|
|
*/
|
|
static int aaci_pcm_close(struct snd_pcm_substream *substream)
|
|
{
|
|
struct aaci *aaci = substream->private_data;
|
|
struct aaci_runtime *aacirun = substream->runtime->private_data;
|
|
|
|
WARN_ON(aacirun->cr & CR_EN);
|
|
|
|
aacirun->substream = NULL;
|
|
free_irq(aaci->dev->irq[0], aaci);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int aaci_pcm_hw_free(struct snd_pcm_substream *substream)
|
|
{
|
|
struct aaci_runtime *aacirun = substream->runtime->private_data;
|
|
|
|
/*
|
|
* This must not be called with the device enabled.
|
|
*/
|
|
WARN_ON(aacirun->cr & CR_EN);
|
|
|
|
if (aacirun->pcm_open)
|
|
snd_ac97_pcm_close(aacirun->pcm);
|
|
aacirun->pcm_open = 0;
|
|
|
|
/*
|
|
* Clear out the DMA and any allocated buffers.
|
|
*/
|
|
devdma_hw_free(NULL, substream);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int aaci_pcm_hw_params(struct snd_pcm_substream *substream,
|
|
struct aaci_runtime *aacirun,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
int err;
|
|
|
|
aaci_pcm_hw_free(substream);
|
|
|
|
err = devdma_hw_alloc(NULL, substream,
|
|
params_buffer_bytes(params));
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
err = snd_ac97_pcm_open(aacirun->pcm, params_rate(params),
|
|
params_channels(params),
|
|
aacirun->pcm->r[0].slots);
|
|
else
|
|
err = snd_ac97_pcm_open(aacirun->pcm, params_rate(params),
|
|
params_channels(params),
|
|
aacirun->pcm->r[1].slots);
|
|
|
|
if (err)
|
|
goto out;
|
|
|
|
aacirun->pcm_open = 1;
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int aaci_pcm_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct aaci_runtime *aacirun = runtime->private_data;
|
|
|
|
aacirun->start = (void *)runtime->dma_area;
|
|
aacirun->end = aacirun->start + runtime->dma_bytes;
|
|
aacirun->ptr = aacirun->start;
|
|
aacirun->period =
|
|
aacirun->bytes = frames_to_bytes(runtime, runtime->period_size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static snd_pcm_uframes_t aaci_pcm_pointer(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct aaci_runtime *aacirun = runtime->private_data;
|
|
ssize_t bytes = aacirun->ptr - aacirun->start;
|
|
|
|
return bytes_to_frames(runtime, bytes);
|
|
}
|
|
|
|
static int aaci_pcm_mmap(struct snd_pcm_substream *substream, struct vm_area_struct *vma)
|
|
{
|
|
return devdma_mmap(NULL, substream, vma);
|
|
}
|
|
|
|
|
|
/*
|
|
* Playback specific ALSA stuff
|
|
*/
|
|
static const u32 channels_to_txmask[] = {
|
|
[2] = CR_SL3 | CR_SL4,
|
|
[4] = CR_SL3 | CR_SL4 | CR_SL7 | CR_SL8,
|
|
[6] = CR_SL3 | CR_SL4 | CR_SL7 | CR_SL8 | CR_SL6 | CR_SL9,
|
|
};
|
|
|
|
/*
|
|
* We can support two and four channel audio. Unfortunately
|
|
* six channel audio requires a non-standard channel ordering:
|
|
* 2 -> FL(3), FR(4)
|
|
* 4 -> FL(3), FR(4), SL(7), SR(8)
|
|
* 6 -> FL(3), FR(4), SL(7), SR(8), C(6), LFE(9) (required)
|
|
* FL(3), FR(4), C(6), SL(7), SR(8), LFE(9) (actual)
|
|
* This requires an ALSA configuration file to correct.
|
|
*/
|
|
static unsigned int channel_list[] = { 2, 4, 6 };
|
|
|
|
static int
|
|
aaci_rule_channels(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *rule)
|
|
{
|
|
struct aaci *aaci = rule->private;
|
|
unsigned int chan_mask = 1 << 0, slots;
|
|
|
|
/*
|
|
* pcms[0] is the our 5.1 PCM instance.
|
|
*/
|
|
slots = aaci->ac97_bus->pcms[0].r[0].slots;
|
|
if (slots & (1 << AC97_SLOT_PCM_SLEFT)) {
|
|
chan_mask |= 1 << 1;
|
|
if (slots & (1 << AC97_SLOT_LFE))
|
|
chan_mask |= 1 << 2;
|
|
}
|
|
|
|
return snd_interval_list(hw_param_interval(p, rule->var),
|
|
ARRAY_SIZE(channel_list), channel_list,
|
|
chan_mask);
|
|
}
|
|
|
|
static int aaci_pcm_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct aaci *aaci = substream->private_data;
|
|
int ret;
|
|
|
|
/*
|
|
* Add rule describing channel dependency.
|
|
*/
|
|
ret = snd_pcm_hw_rule_add(substream->runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_CHANNELS,
|
|
aaci_rule_channels, aaci,
|
|
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
|
ret = __aaci_pcm_open(aaci, substream, &aaci->playback);
|
|
} else {
|
|
ret = __aaci_pcm_open(aaci, substream, &aaci->capture);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int aaci_pcm_playback_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
struct aaci *aaci = substream->private_data;
|
|
struct aaci_runtime *aacirun = substream->runtime->private_data;
|
|
unsigned int channels = params_channels(params);
|
|
int ret;
|
|
|
|
WARN_ON(channels >= ARRAY_SIZE(channels_to_txmask) ||
|
|
!channels_to_txmask[channels]);
|
|
|
|
ret = aaci_pcm_hw_params(substream, aacirun, params);
|
|
|
|
/*
|
|
* Enable FIFO, compact mode, 16 bits per sample.
|
|
* FIXME: double rate slots?
|
|
*/
|
|
if (ret >= 0) {
|
|
aacirun->cr = CR_FEN | CR_COMPACT | CR_SZ16;
|
|
aacirun->cr |= channels_to_txmask[channels];
|
|
|
|
aacirun->fifosz = aaci->fifosize * 4;
|
|
if (aacirun->cr & CR_COMPACT)
|
|
aacirun->fifosz >>= 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void aaci_pcm_playback_stop(struct aaci_runtime *aacirun)
|
|
{
|
|
u32 ie;
|
|
|
|
ie = readl(aacirun->base + AACI_IE);
|
|
ie &= ~(IE_URIE|IE_TXIE);
|
|
writel(ie, aacirun->base + AACI_IE);
|
|
aacirun->cr &= ~CR_EN;
|
|
aaci_chan_wait_ready(aacirun);
|
|
writel(aacirun->cr, aacirun->base + AACI_TXCR);
|
|
}
|
|
|
|
static void aaci_pcm_playback_start(struct aaci_runtime *aacirun)
|
|
{
|
|
u32 ie;
|
|
|
|
aaci_chan_wait_ready(aacirun);
|
|
aacirun->cr |= CR_EN;
|
|
|
|
ie = readl(aacirun->base + AACI_IE);
|
|
ie |= IE_URIE | IE_TXIE;
|
|
writel(ie, aacirun->base + AACI_IE);
|
|
writel(aacirun->cr, aacirun->base + AACI_TXCR);
|
|
}
|
|
|
|
static int aaci_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
struct aaci *aaci = substream->private_data;
|
|
struct aaci_runtime *aacirun = substream->runtime->private_data;
|
|
unsigned long flags;
|
|
int ret = 0;
|
|
|
|
spin_lock_irqsave(&aaci->lock, flags);
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
aaci_pcm_playback_start(aacirun);
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
aaci_pcm_playback_start(aacirun);
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
aaci_pcm_playback_stop(aacirun);
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
aaci_pcm_playback_stop(aacirun);
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
break;
|
|
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
spin_unlock_irqrestore(&aaci->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct snd_pcm_ops aaci_playback_ops = {
|
|
.open = aaci_pcm_open,
|
|
.close = aaci_pcm_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = aaci_pcm_playback_hw_params,
|
|
.hw_free = aaci_pcm_hw_free,
|
|
.prepare = aaci_pcm_prepare,
|
|
.trigger = aaci_pcm_playback_trigger,
|
|
.pointer = aaci_pcm_pointer,
|
|
.mmap = aaci_pcm_mmap,
|
|
};
|
|
|
|
static int aaci_pcm_capture_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
struct aaci *aaci = substream->private_data;
|
|
struct aaci_runtime *aacirun = substream->runtime->private_data;
|
|
int ret;
|
|
|
|
ret = aaci_pcm_hw_params(substream, aacirun, params);
|
|
|
|
if (ret >= 0) {
|
|
aacirun->cr = CR_FEN | CR_COMPACT | CR_SZ16;
|
|
|
|
/* Line in record: slot 3 and 4 */
|
|
aacirun->cr |= CR_SL3 | CR_SL4;
|
|
|
|
aacirun->fifosz = aaci->fifosize * 4;
|
|
|
|
if (aacirun->cr & CR_COMPACT)
|
|
aacirun->fifosz >>= 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void aaci_pcm_capture_stop(struct aaci_runtime *aacirun)
|
|
{
|
|
u32 ie;
|
|
|
|
aaci_chan_wait_ready(aacirun);
|
|
|
|
ie = readl(aacirun->base + AACI_IE);
|
|
ie &= ~(IE_ORIE | IE_RXIE);
|
|
writel(ie, aacirun->base+AACI_IE);
|
|
|
|
aacirun->cr &= ~CR_EN;
|
|
|
|
writel(aacirun->cr, aacirun->base + AACI_RXCR);
|
|
}
|
|
|
|
static void aaci_pcm_capture_start(struct aaci_runtime *aacirun)
|
|
{
|
|
u32 ie;
|
|
|
|
aaci_chan_wait_ready(aacirun);
|
|
|
|
#ifdef DEBUG
|
|
/* RX Timeout value: bits 28:17 in RXCR */
|
|
aacirun->cr |= 0xf << 17;
|
|
#endif
|
|
|
|
aacirun->cr |= CR_EN;
|
|
writel(aacirun->cr, aacirun->base + AACI_RXCR);
|
|
|
|
ie = readl(aacirun->base + AACI_IE);
|
|
ie |= IE_ORIE |IE_RXIE; // overrun and rx interrupt -- half full
|
|
writel(ie, aacirun->base + AACI_IE);
|
|
}
|
|
|
|
static int aaci_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
struct aaci *aaci = substream->private_data;
|
|
struct aaci_runtime *aacirun = substream->runtime->private_data;
|
|
unsigned long flags;
|
|
int ret = 0;
|
|
|
|
spin_lock_irqsave(&aaci->lock, flags);
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
aaci_pcm_capture_start(aacirun);
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
aaci_pcm_capture_start(aacirun);
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
aaci_pcm_capture_stop(aacirun);
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
aaci_pcm_capture_stop(aacirun);
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
break;
|
|
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&aaci->lock, flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int aaci_pcm_capture_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct aaci *aaci = substream->private_data;
|
|
|
|
aaci_pcm_prepare(substream);
|
|
|
|
/* allow changing of sample rate */
|
|
aaci_ac97_write(aaci->ac97, AC97_EXTENDED_STATUS, 0x0001); /* VRA */
|
|
aaci_ac97_write(aaci->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
|
|
aaci_ac97_write(aaci->ac97, AC97_PCM_MIC_ADC_RATE, runtime->rate);
|
|
|
|
/* Record select: Mic: 0, Aux: 3, Line: 4 */
|
|
aaci_ac97_write(aaci->ac97, AC97_REC_SEL, 0x0404);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_pcm_ops aaci_capture_ops = {
|
|
.open = aaci_pcm_open,
|
|
.close = aaci_pcm_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = aaci_pcm_capture_hw_params,
|
|
.hw_free = aaci_pcm_hw_free,
|
|
.prepare = aaci_pcm_capture_prepare,
|
|
.trigger = aaci_pcm_capture_trigger,
|
|
.pointer = aaci_pcm_pointer,
|
|
.mmap = aaci_pcm_mmap,
|
|
};
|
|
|
|
/*
|
|
* Power Management.
|
|
*/
|
|
#ifdef CONFIG_PM
|
|
static int aaci_do_suspend(struct snd_card *card, unsigned int state)
|
|
{
|
|
struct aaci *aaci = card->private_data;
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D3cold);
|
|
snd_pcm_suspend_all(aaci->pcm);
|
|
return 0;
|
|
}
|
|
|
|
static int aaci_do_resume(struct snd_card *card, unsigned int state)
|
|
{
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
|
|
return 0;
|
|
}
|
|
|
|
static int aaci_suspend(struct amba_device *dev, pm_message_t state)
|
|
{
|
|
struct snd_card *card = amba_get_drvdata(dev);
|
|
return card ? aaci_do_suspend(card) : 0;
|
|
}
|
|
|
|
static int aaci_resume(struct amba_device *dev)
|
|
{
|
|
struct snd_card *card = amba_get_drvdata(dev);
|
|
return card ? aaci_do_resume(card) : 0;
|
|
}
|
|
#else
|
|
#define aaci_do_suspend NULL
|
|
#define aaci_do_resume NULL
|
|
#define aaci_suspend NULL
|
|
#define aaci_resume NULL
|
|
#endif
|
|
|
|
|
|
static struct ac97_pcm ac97_defs[] __devinitdata = {
|
|
[0] = { /* Front PCM */
|
|
.exclusive = 1,
|
|
.r = {
|
|
[0] = {
|
|
.slots = (1 << AC97_SLOT_PCM_LEFT) |
|
|
(1 << AC97_SLOT_PCM_RIGHT) |
|
|
(1 << AC97_SLOT_PCM_CENTER) |
|
|
(1 << AC97_SLOT_PCM_SLEFT) |
|
|
(1 << AC97_SLOT_PCM_SRIGHT) |
|
|
(1 << AC97_SLOT_LFE),
|
|
},
|
|
},
|
|
},
|
|
[1] = { /* PCM in */
|
|
.stream = 1,
|
|
.exclusive = 1,
|
|
.r = {
|
|
[0] = {
|
|
.slots = (1 << AC97_SLOT_PCM_LEFT) |
|
|
(1 << AC97_SLOT_PCM_RIGHT),
|
|
},
|
|
},
|
|
},
|
|
[2] = { /* Mic in */
|
|
.stream = 1,
|
|
.exclusive = 1,
|
|
.r = {
|
|
[0] = {
|
|
.slots = (1 << AC97_SLOT_MIC),
|
|
},
|
|
},
|
|
}
|
|
};
|
|
|
|
static struct snd_ac97_bus_ops aaci_bus_ops = {
|
|
.write = aaci_ac97_write,
|
|
.read = aaci_ac97_read,
|
|
};
|
|
|
|
static int __devinit aaci_probe_ac97(struct aaci *aaci)
|
|
{
|
|
struct snd_ac97_template ac97_template;
|
|
struct snd_ac97_bus *ac97_bus;
|
|
struct snd_ac97 *ac97;
|
|
int ret;
|
|
|
|
/*
|
|
* Assert AACIRESET for 2us
|
|
*/
|
|
writel(0, aaci->base + AACI_RESET);
|
|
udelay(2);
|
|
writel(RESET_NRST, aaci->base + AACI_RESET);
|
|
|
|
/*
|
|
* Give the AC'97 codec more than enough time
|
|
* to wake up. (42us = ~2 frames at 48kHz.)
|
|
*/
|
|
udelay(42);
|
|
|
|
ret = snd_ac97_bus(aaci->card, 0, &aaci_bus_ops, aaci, &ac97_bus);
|
|
if (ret)
|
|
goto out;
|
|
|
|
ac97_bus->clock = 48000;
|
|
aaci->ac97_bus = ac97_bus;
|
|
|
|
memset(&ac97_template, 0, sizeof(struct snd_ac97_template));
|
|
ac97_template.private_data = aaci;
|
|
ac97_template.num = 0;
|
|
ac97_template.scaps = AC97_SCAP_SKIP_MODEM;
|
|
|
|
ret = snd_ac97_mixer(ac97_bus, &ac97_template, &ac97);
|
|
if (ret)
|
|
goto out;
|
|
aaci->ac97 = ac97;
|
|
|
|
/*
|
|
* Disable AC97 PC Beep input on audio codecs.
|
|
*/
|
|
if (ac97_is_audio(ac97))
|
|
snd_ac97_write_cache(ac97, AC97_PC_BEEP, 0x801e);
|
|
|
|
ret = snd_ac97_pcm_assign(ac97_bus, ARRAY_SIZE(ac97_defs), ac97_defs);
|
|
if (ret)
|
|
goto out;
|
|
|
|
aaci->playback.pcm = &ac97_bus->pcms[0];
|
|
aaci->capture.pcm = &ac97_bus->pcms[1];
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void aaci_free_card(struct snd_card *card)
|
|
{
|
|
struct aaci *aaci = card->private_data;
|
|
if (aaci->base)
|
|
iounmap(aaci->base);
|
|
}
|
|
|
|
static struct aaci * __devinit aaci_init_card(struct amba_device *dev)
|
|
{
|
|
struct aaci *aaci;
|
|
struct snd_card *card;
|
|
|
|
card = snd_card_new(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
|
|
THIS_MODULE, sizeof(struct aaci));
|
|
if (card == NULL)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
card->private_free = aaci_free_card;
|
|
|
|
strlcpy(card->driver, DRIVER_NAME, sizeof(card->driver));
|
|
strlcpy(card->shortname, "ARM AC'97 Interface", sizeof(card->shortname));
|
|
snprintf(card->longname, sizeof(card->longname),
|
|
"%s at 0x%016llx, irq %d",
|
|
card->shortname, (unsigned long long)dev->res.start,
|
|
dev->irq[0]);
|
|
|
|
aaci = card->private_data;
|
|
mutex_init(&aaci->ac97_sem);
|
|
spin_lock_init(&aaci->lock);
|
|
aaci->card = card;
|
|
aaci->dev = dev;
|
|
|
|
/* Set MAINCR to allow slot 1 and 2 data IO */
|
|
aaci->maincr = MAINCR_IE | MAINCR_SL1RXEN | MAINCR_SL1TXEN |
|
|
MAINCR_SL2RXEN | MAINCR_SL2TXEN;
|
|
|
|
return aaci;
|
|
}
|
|
|
|
static int __devinit aaci_init_pcm(struct aaci *aaci)
|
|
{
|
|
struct snd_pcm *pcm;
|
|
int ret;
|
|
|
|
ret = snd_pcm_new(aaci->card, "AACI AC'97", 0, 1, 1, &pcm);
|
|
if (ret == 0) {
|
|
aaci->pcm = pcm;
|
|
pcm->private_data = aaci;
|
|
pcm->info_flags = 0;
|
|
|
|
strlcpy(pcm->name, DRIVER_NAME, sizeof(pcm->name));
|
|
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &aaci_playback_ops);
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &aaci_capture_ops);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static unsigned int __devinit aaci_size_fifo(struct aaci *aaci)
|
|
{
|
|
struct aaci_runtime *aacirun = &aaci->playback;
|
|
int i;
|
|
|
|
writel(CR_FEN | CR_SZ16 | CR_EN, aacirun->base + AACI_TXCR);
|
|
|
|
for (i = 0; !(readl(aacirun->base + AACI_SR) & SR_TXFF) && i < 4096; i++)
|
|
writel(0, aacirun->fifo);
|
|
|
|
writel(0, aacirun->base + AACI_TXCR);
|
|
|
|
/*
|
|
* Re-initialise the AACI after the FIFO depth test, to
|
|
* ensure that the FIFOs are empty. Unfortunately, merely
|
|
* disabling the channel doesn't clear the FIFO.
|
|
*/
|
|
writel(aaci->maincr & ~MAINCR_IE, aaci->base + AACI_MAINCR);
|
|
writel(aaci->maincr, aaci->base + AACI_MAINCR);
|
|
|
|
/*
|
|
* If we hit 4096, we failed. Go back to the specified
|
|
* fifo depth.
|
|
*/
|
|
if (i == 4096)
|
|
i = 8;
|
|
|
|
return i;
|
|
}
|
|
|
|
static int __devinit aaci_probe(struct amba_device *dev, void *id)
|
|
{
|
|
struct aaci *aaci;
|
|
int ret, i;
|
|
|
|
ret = amba_request_regions(dev, NULL);
|
|
if (ret)
|
|
return ret;
|
|
|
|
aaci = aaci_init_card(dev);
|
|
if (IS_ERR(aaci)) {
|
|
ret = PTR_ERR(aaci);
|
|
goto out;
|
|
}
|
|
|
|
aaci->base = ioremap(dev->res.start, SZ_4K);
|
|
if (!aaci->base) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Playback uses AACI channel 0
|
|
*/
|
|
aaci->playback.base = aaci->base + AACI_CSCH1;
|
|
aaci->playback.fifo = aaci->base + AACI_DR1;
|
|
|
|
/*
|
|
* Capture uses AACI channel 0
|
|
*/
|
|
aaci->capture.base = aaci->base + AACI_CSCH1;
|
|
aaci->capture.fifo = aaci->base + AACI_DR1;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
void __iomem *base = aaci->base + i * 0x14;
|
|
|
|
writel(0, base + AACI_IE);
|
|
writel(0, base + AACI_TXCR);
|
|
writel(0, base + AACI_RXCR);
|
|
}
|
|
|
|
writel(0x1fff, aaci->base + AACI_INTCLR);
|
|
writel(aaci->maincr, aaci->base + AACI_MAINCR);
|
|
|
|
ret = aaci_probe_ac97(aaci);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/*
|
|
* Size the FIFOs (must be multiple of 16).
|
|
*/
|
|
aaci->fifosize = aaci_size_fifo(aaci);
|
|
if (aaci->fifosize & 15) {
|
|
printk(KERN_WARNING "AACI: fifosize = %d not supported\n",
|
|
aaci->fifosize);
|
|
ret = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
ret = aaci_init_pcm(aaci);
|
|
if (ret)
|
|
goto out;
|
|
|
|
snd_card_set_dev(aaci->card, &dev->dev);
|
|
|
|
ret = snd_card_register(aaci->card);
|
|
if (ret == 0) {
|
|
dev_info(&dev->dev, "%s, fifo %d\n", aaci->card->longname,
|
|
aaci->fifosize);
|
|
amba_set_drvdata(dev, aaci->card);
|
|
return ret;
|
|
}
|
|
|
|
out:
|
|
if (aaci)
|
|
snd_card_free(aaci->card);
|
|
amba_release_regions(dev);
|
|
return ret;
|
|
}
|
|
|
|
static int __devexit aaci_remove(struct amba_device *dev)
|
|
{
|
|
struct snd_card *card = amba_get_drvdata(dev);
|
|
|
|
amba_set_drvdata(dev, NULL);
|
|
|
|
if (card) {
|
|
struct aaci *aaci = card->private_data;
|
|
writel(0, aaci->base + AACI_MAINCR);
|
|
|
|
snd_card_free(card);
|
|
amba_release_regions(dev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct amba_id aaci_ids[] = {
|
|
{
|
|
.id = 0x00041041,
|
|
.mask = 0x000fffff,
|
|
},
|
|
{ 0, 0 },
|
|
};
|
|
|
|
static struct amba_driver aaci_driver = {
|
|
.drv = {
|
|
.name = DRIVER_NAME,
|
|
},
|
|
.probe = aaci_probe,
|
|
.remove = __devexit_p(aaci_remove),
|
|
.suspend = aaci_suspend,
|
|
.resume = aaci_resume,
|
|
.id_table = aaci_ids,
|
|
};
|
|
|
|
static int __init aaci_init(void)
|
|
{
|
|
return amba_driver_register(&aaci_driver);
|
|
}
|
|
|
|
static void __exit aaci_exit(void)
|
|
{
|
|
amba_driver_unregister(&aaci_driver);
|
|
}
|
|
|
|
module_init(aaci_init);
|
|
module_exit(aaci_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("ARM PrimeCell PL041 Advanced Audio CODEC Interface driver");
|