diff options
Diffstat (limited to 'sound')
110 files changed, 6769 insertions, 1251 deletions
diff --git a/sound/Kconfig b/sound/Kconfig index 047d59ea057..ee794ae0604 100644 --- a/sound/Kconfig +++ b/sound/Kconfig @@ -42,6 +42,11 @@ menu "Advanced Linux Sound Architecture" config SND tristate "Advanced Linux Sound Architecture" depends on SOUND + help + Say 'Y' or 'M' to enable ALSA (Advanced Linux Sound Architecture), + the new base sound system. + + For more information, see <http://www.alsa-project.org/> source "sound/core/Kconfig" diff --git a/sound/arm/Kconfig b/sound/arm/Kconfig index cdacf4d3a38..34c1740aa6e 100644 --- a/sound/arm/Kconfig +++ b/sound/arm/Kconfig @@ -14,5 +14,11 @@ config SND_SA11XX_UDA1341 To compile this driver as a module, choose M here: the module will be called snd-sa11xx-uda1341. +config SND_ARMAACI + tristate "ARM PrimeCell PL041 AC Link support" + depends on SND && ARM_AMBA + select SND_PCM + select SND_AC97_CODEC + endmenu diff --git a/sound/arm/Makefile b/sound/arm/Makefile index d7e7dc0c3cd..f74ec28e106 100644 --- a/sound/arm/Makefile +++ b/sound/arm/Makefile @@ -6,3 +6,6 @@ snd-sa11xx-uda1341-objs := sa11xx-uda1341.o # Toplevel Module Dependency obj-$(CONFIG_SND_SA11XX_UDA1341) += snd-sa11xx-uda1341.o + +obj-$(CONFIG_SND_ARMAACI) += snd-aaci.o +snd-aaci-objs := aaci.o devdma.o diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c new file mode 100644 index 00000000000..08cc3ddca96 --- /dev/null +++ b/sound/arm/aaci.c @@ -0,0 +1,968 @@ +/* + * linux/sound/arm/aaci.c - ARM PrimeCell AACI PL041 driver + * + * Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Documentation: ARM DDI 0173B + */ +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/device.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/err.h> + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/hardware/amba.h> + +#include <sound/driver.h> +#include <sound/core.h> +#include <sound/initval.h> +#include <sound/ac97_codec.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> + +#include "aaci.h" +#include "devdma.h" + +#define DRIVER_NAME "aaci-pl041" + +/* + * PM support is not complete. Turn it off. + */ +#undef CONFIG_PM + +static void aaci_ac97_select_codec(struct aaci *aaci, ac97_t *ac97) +{ + u32 v, maincr = aaci->maincr | MAINCR_SCRA(ac97->num); + + /* + * Ensure that the slot 1/2 RX registers are empty. + */ + v = readl(aaci->base + AACI_SLFR); + if (v & SLFR_2RXV) + readl(aaci->base + AACI_SL2RX); + if (v & SLFR_1RXV) + readl(aaci->base + AACI_SL1RX); + + writel(maincr, aaci->base + AACI_MAINCR); +} + +/* + * P29: + * The recommended use of programming the external codec through slot 1 + * and slot 2 data is to use the channels during setup routines and the + * slot register at any other time. The data written into slot 1, slot 2 + * and slot 12 registers is transmitted only when their corresponding + * SI1TxEn, SI2TxEn and SI12TxEn bits are set in the AACI_MAINCR + * register. + */ +static void aaci_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val) +{ + struct aaci *aaci = ac97->private_data; + u32 v; + + if (ac97->num >= 4) + return; + + down(&aaci->ac97_sem); + + aaci_ac97_select_codec(aaci, ac97); + + /* + * P54: You must ensure that AACI_SL2TX is always written + * to, if required, before data is written to AACI_SL1TX. + */ + writel(val << 4, aaci->base + AACI_SL2TX); + writel(reg << 12, aaci->base + AACI_SL1TX); + + /* + * Wait for the transmission of both slots to complete. + */ + do { + v = readl(aaci->base + AACI_SLFR); + } while (v & (SLFR_1TXB|SLFR_2TXB)); + + up(&aaci->ac97_sem); +} + +/* + * Read an AC'97 register. + */ +static unsigned short aaci_ac97_read(ac97_t *ac97, unsigned short reg) +{ + struct aaci *aaci = ac97->private_data; + u32 v; + + if (ac97->num >= 4) + return ~0; + + down(&aaci->ac97_sem); + + aaci_ac97_select_codec(aaci, ac97); + + /* + * Write the register address to slot 1. + */ + writel((reg << 12) | (1 << 19), aaci->base + AACI_SL1TX); + + /* + * Wait for the transmission to complete. + */ + do { + v = readl(aaci->base + AACI_SLFR); + } while (v & SLFR_1TXB); + + /* + * Give the AC'97 codec more than enough time + * to respond. (42us = ~2 frames at 48kHz.) + */ + udelay(42); |