When channel_disable() is called, it disables per channel interrupts and waits until channels state becomes STATE_STALL, and then disables the channel. Now, if the DMA transfer is disabled while the channel is in STATE_NEXT we will not wait anything and disable the channel immediately. This seems to cause weird data corruption for example in audio transfers.

Fix is to wait while we are in STATE_NEXT or STATE_ON and only then disable the channel.

Signed-off-by: Mika Westerberg mika.westerberg@iki.fi --- arch/arm/mach-ep93xx/dma-m2p.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-ep93xx/dma-m2p.c b/arch/arm/mach-ep93xx/dma-m2p.c index 8904ca4..a696d35 100644 --- a/arch/arm/mach-ep93xx/dma-m2p.c +++ b/arch/arm/mach-ep93xx/dma-m2p.c @@ -276,7 +276,7 @@ static void channel_disable(struct m2p_channel *ch) v &= ~(M2P_CONTROL_STALL_IRQ_EN | M2P_CONTROL_NFB_IRQ_EN); m2p_set_control(ch, v);

- while (m2p_channel_state(ch) == STATE_ON) + while (m2p_channel_state(ch) >= STATE_ON) cpu_relax();

m2p_set_control(ch, 0x0);

Add support for AC97 controllers found in Cirrus Logic EP93xx family SoCs.

Signed-off-by: Mika Westerberg mika.westerberg@iki.fi --- sound/soc/ep93xx/Kconfig | 8 +- sound/soc/ep93xx/Makefile | 2 + sound/soc/ep93xx/ep93xx-ac97.c | 476 ++++++++++++++++++++++++++++++++++++++++ sound/soc/ep93xx/ep93xx-ac97.h | 17 ++ 4 files changed, 502 insertions(+), 1 deletions(-) create mode 100644 sound/soc/ep93xx/ep93xx-ac97.c create mode 100644 sound/soc/ep93xx/ep93xx-ac97.h

diff --git a/sound/soc/ep93xx/Kconfig b/sound/soc/ep93xx/Kconfig index f617f56..4a9d236 100644 --- a/sound/soc/ep93xx/Kconfig +++ b/sound/soc/ep93xx/Kconfig @@ -3,11 +3,17 @@ config SND_EP93XX_SOC depends on ARCH_EP93XX && SND_SOC help Say Y or M if you want to add support for codecs attached to - the EP93xx I2S interface. + the EP93xx I2S or AC97 interfaces.

config SND_EP93XX_SOC_I2S tristate

+config SND_EP93XX_SOC_AC97 + tristate + select AC97_BUS + select SND_AC97_CODEC + select SND_SOC_AC97_BUS + config SND_EP93XX_SOC_SNAPPERCL15 tristate "SoC Audio support for Bluewater Systems Snapper CL15 module" depends on SND_EP93XX_SOC && MACH_SNAPPER_CL15 diff --git a/sound/soc/ep93xx/Makefile b/sound/soc/ep93xx/Makefile index 272e60f..ac06e00 100644 --- a/sound/soc/ep93xx/Makefile +++ b/sound/soc/ep93xx/Makefile @@ -1,9 +1,11 @@ # EP93xx Platform Support snd-soc-ep93xx-objs := ep93xx-pcm.o snd-soc-ep93xx-i2s-objs := ep93xx-i2s.o +snd-soc-ep93xx-ac97-objs := ep93xx-ac97.o

obj-$(CONFIG_SND_EP93XX_SOC) += snd-soc-ep93xx.o obj-$(CONFIG_SND_EP93XX_SOC_I2S) += snd-soc-ep93xx-i2s.o +obj-$(CONFIG_SND_EP93XX_SOC_AC97) += snd-soc-ep93xx-ac97.o

# EP93XX Machine Support snd-soc-snappercl15-objs := snappercl15.o diff --git a/sound/soc/ep93xx/ep93xx-ac97.c b/sound/soc/ep93xx/ep93xx-ac97.c new file mode 100644 index 0000000..b387ad8 --- /dev/null +++ b/sound/soc/ep93xx/ep93xx-ac97.c @@ -0,0 +1,476 @@ +/* + * ASoC driver for Cirrus Logic EP93xx AC97 controller. + * + * Copyright (c) 2010 Mika Westerberg + * + * Based on s3c-ac97 ASoC driver by Jaswinder Singh. + * + * 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. + */ + +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include <sound/core.h> +#include <sound/ac97_codec.h> +#include <sound/soc.h> + +#include <mach/dma.h> +#include "ep93xx-pcm.h" +#include "ep93xx-ac97.h" + +/* + * Per channel (1-4) registers. + */ +#define AC97CH(n) (((n) - 1) * 0x20) + +#define AC97DR(n) (AC97CH(n) + 0x0000) + +#define AC97RXCR(n) (AC97CH(n) + 0x0004) +#define AC97RXCR_REN BIT(0) +#define AC97RXCR_RX3 BIT(3) +#define AC97RXCR_RX4 BIT(4) +#define AC97RXCR_CM BIT(15) + +#define AC97TXCR(n) (AC97CH(n) + 0x0008) +#define AC97TXCR_TEN BIT(0) +#define AC97TXCR_TX3 BIT(3) +#define AC97TXCR_TX4 BIT(4) +#define AC97TXCR_CM BIT(15) + +#define AC97SR(n) (AC97CH(n) + 0x000c) +#define AC97SR_TXFE BIT(1) +#define AC97SR_TXUE BIT(6) + +#define AC97RISR(n) (AC97CH(n) + 0x0010) +#define AC97ISR(n) (AC97CH(n) + 0x0014) +#define AC97IE(n) (AC97CH(n) + 0x0018) + +/* + * Global AC97 controller registers. + */ +#define AC97S1DATA 0x0080 +#define AC97S2DATA 0x0084 +#define AC97S12DATA 0x0088 + +#define AC97RGIS 0x008c +#define AC97GIS 0x0090 +#define AC97IM 0x0094 +/* + * Common bits for RGIS, GIS and IM registers. + */ +#define AC97_SLOT2RXVALID BIT(1) +#define AC97_CODECREADY BIT(5) +#define AC97_SLOT2TXCOMPLETE BIT(6) + +#define AC97EOI 0x0098 +#define AC97EOI_WINT BIT(0) +#define AC97EOI_CODECREADY BIT(1) + +#define AC97GCR 0x009c +#define AC97GCR_AC97IFE BIT(0) + +#define AC97RESET 0x00a0 +#define AC97RESET_TIMEDRESET BIT(0) + +#define AC97SYNC 0x00a4 +#define AC97SYNC_TIMEDSYNC BIT(0) + +#define AC97_TIMEOUT msecs_to_jiffies(5) + +/** + * struct ep93xx_ac97_info - EP93xx AC97 controller info structure + * @lock: mutex serializing access to the bus (slot 1 & 2 ops) + * @dev: pointer to the platform device dev structure + * @mem: physical memory resource for the registers + * @regs: mapped AC97 controller registers + * @irq: AC97 interrupt number + * @done: bus ops wait here for an interrupt + */ +struct ep93xx_ac97_info { + struct mutex lock; + struct device *dev; + struct resource *mem; + void __iomem *regs; + int irq; + struct completion done; +}; + +/* currently ALSA only supports a single AC97 device */ +static struct ep93xx_ac97_info *ep93xx_ac97_info; + +static struct ep93xx_pcm_dma_params ep93xx_ac97_pcm_out = { + .name = "ac97-pcm-out", + .dma_port = EP93XX_DMA_M2P_PORT_AAC1, +}; + +static struct ep93xx_pcm_dma_params ep93xx_ac97_pcm_in = { + .name = "ac97-pcm-in", + .dma_port = EP93XX_DMA_M2P_PORT_AAC1, +}; + +static inline unsigned ep93xx_ac97_read_reg(struct ep93xx_ac97_info *info, + unsigned reg) +{ + return __raw_readl(info->regs + reg); +} + +static inline void ep93xx_ac97_write_reg(struct ep93xx_ac97_info *info, + unsigned reg, unsigned val) +{ + __raw_writel(val, info->regs + reg); +} + +static unsigned short ep93xx_ac97_read(struct snd_ac97 *ac97, + unsigned short reg) +{ + struct ep93xx_ac97_info *info = ep93xx_ac97_info; + unsigned short val; + + mutex_lock(&info->lock); + + INIT_COMPLETION(info->done); + + ep93xx_ac97_write_reg(info, AC97S1DATA, reg); + ep93xx_ac97_write_reg(info, AC97IM, AC97_SLOT2RXVALID); + if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT)) { + dev_warn(info->dev, "timeout reading register %x\n", reg); + mutex_unlock(&info->lock); + return -1; + } + val = (unsigned short)ep93xx_ac97_read_reg(info, AC97S2DATA); + + mutex_unlock(&info->lock); + return val; +} + +static void ep93xx_ac97_write(struct snd_ac97 *ac97, + unsigned short reg, + unsigned short val) +{ + struct ep93xx_ac97_info *info = ep93xx_ac97_info; + + mutex_lock(&info->lock); + + INIT_COMPLETION(info->done); + + /* + * Writes to the codec need to be done so that slot 2 is filled in + * before slot 1. + */ + ep93xx_ac97_write_reg(info, AC97S2DATA, val); + ep93xx_ac97_write_reg(info, AC97S1DATA, reg); + + ep93xx_ac97_write_reg(info, AC97IM, AC97_SLOT2TXCOMPLETE); + if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT)) + dev_warn(info->dev, "timeout writing register %x\n", reg); + + mutex_unlock(&info->lock); +} + +static void ep93xx_ac97_warm_reset(struct snd_ac97 *ac97) +{ + struct ep93xx_ac97_info *info = ep93xx_ac97_info; + + mutex_lock(&info->lock); + + INIT_COMPLETION(info->done); + /* + * We are assuming that before this functions gets called, the codec + * BIT_CLK is stopped by forcing the codec into powerdown mode. We can + * control the SYNC signal directly via AC97SYNC register. Using + * TIMEDSYNC the controller will keep the SYNC high > 1us. + */ + ep93xx_ac97_write_reg(info, AC97SYNC, AC97SYNC_TIMEDSYNC); + ep93xx_ac97_write_reg(info, AC97IM, AC97_CODECREADY); + if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT)) + dev_warn(info->dev, "codec warm reset timeout\n"); + + mutex_unlock(&info->lock); +} + +static void ep93xx_ac97_cold_reset(struct snd_ac97 *ac97) +{ + struct ep93xx_ac97_info *info = ep93xx_ac97_info; + + mutex_lock(&info->lock); + + INIT_COMPLETION(info->done); + /* + * For doing cold reset, we disable the AC97 controller interface, clear + * WINT and CODECREADY bits, and finally enable the interface again. + */ + ep93xx_ac97_write_reg(info, AC97GCR, 0); + ep93xx_ac97_write_reg(info, AC97EOI, AC97EOI_CODECREADY | AC97EOI_WINT); + ep93xx_ac97_write_reg(info, AC97GCR, AC97GCR_AC97IFE); + + /* + * Now, assert the reset and wait for the codec to become ready. + */ + ep93xx_ac97_write_reg(info, AC97RESET, AC97RESET_TIMEDRESET); + ep93xx_ac97_write_reg(info, AC97IM, AC97_CODECREADY); + if (!wait_for_completion_timeout(&info->done, AC97_TIMEOUT)) + dev_warn(info->dev, "codec cold reset timeout\n"); + + /* + * Give the codec some time to come fully out from the reset. This way + * we ensure that the subsequent reads/writes will work. + */ + usleep_range(1000, 5000); + + mutex_unlock(&info->lock); +} + +static irqreturn_t ep93xx_ac97_interrupt(int irq, void *dev_id) +{ + struct ep93xx_ac97_info *info = dev_id; + unsigned status, mask; + + /* + * Just mask out the interrupt and wake up the waiting thread. + * Interrupts are cleared via reading/writing to slot 1 & 2 registers by + * the waiting thread. + */ + status = ep93xx_ac97_read_reg(info, AC97GIS); + mask = ep93xx_ac97_read_reg(info, AC97IM); + mask &= ~status; + ep93xx_ac97_write_reg(info, AC97IM, mask); + + complete(&info->done); + return IRQ_HANDLED; +} + +struct snd_ac97_bus_ops soc_ac97_ops = { + .read = ep93xx_ac97_read, + .write = ep93xx_ac97_write, + .reset = ep93xx_ac97_cold_reset, + .warm_reset = ep93xx_ac97_warm_reset, +}; +EXPORT_SYMBOL_GPL(soc_ac97_ops); + +static int ep93xx_ac97_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *dai) +{ + struct ep93xx_ac97_info *info = dai->private_data; + unsigned v = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + /* + * Enable compact mode, TX slots 3 & 4, and the TX FIFO + * itself. + */ + v |= AC97TXCR_CM; + v |= AC97TXCR_TX3 | AC97TXCR_TX4; + v |= AC97TXCR_TEN; + ep93xx_ac97_write_reg(info, AC97TXCR(1), v); + } else { + /* + * Enable compact mode, RX slots 3 & 4, and the RX FIFO + * itself. + */ + v |= AC97RXCR_CM; + v |= AC97RXCR_RX3 | AC97RXCR_RX4; + v |= AC97RXCR_REN; + ep93xx_ac97_write_reg(info, AC97RXCR(1), v); + } + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + /* + * As per Cirrus EP93xx errata described below: + * + * http://www.cirrus.com/en/pubs/errata/ER667E2B.pdf + * + * we will wait for the TX FIFO to be empty before + * clearing the TEN bit. + */ + unsigned long timeout = jiffies + AC97_TIMEOUT; + + do { + v = ep93xx_ac97_read_reg(info, AC97SR(1)); + if (time_after(jiffies, timeout)) { + dev_warn(info->dev, "TX timeout\n"); + break; + } + } while (!(v & (AC97SR_TXFE | AC97SR_TXUE))); + + /* disable the TX FIFO */ + ep93xx_ac97_write_reg(info, AC97TXCR(1), 0); + } else { + /* disable the RX FIFO */ + ep93xx_ac97_write_reg(info, AC97RXCR(1), 0); + } + break; + + default: + dev_warn(info->dev, "unknown command %d\n", cmd); + return -EINVAL; + } + + return 0; +} + +static int ep93xx_ac97_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct ep93xx_pcm_dma_params *dma_data; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + dma_data = &ep93xx_ac97_pcm_out; + else + dma_data = &ep93xx_ac97_pcm_in; + + snd_soc_dai_set_dma_data(dai, substream, dma_data); + return 0; +} + +static struct snd_soc_dai_ops ep93xx_ac97_dai_ops = { + .startup = ep93xx_ac97_startup, + .trigger = ep93xx_ac97_trigger, +}; + +struct snd_soc_dai ep93xx_ac97_dai = { + .name = "ep93xx-ac97", + .id = 0, + .ac97_control = 1, + .playback = { + .stream_name = "AC97 Playback", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .capture = { + .stream_name = "AC97 Capture", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .ops = &ep93xx_ac97_dai_ops, +}; +EXPORT_SYMBOL_GPL(ep93xx_ac97_dai); + +static int __devinit ep93xx_ac97_probe(struct platform_device *pdev) +{ + struct ep93xx_ac97_info *info; + int ret; + + info = kzalloc(sizeof(struct ep93xx_ac97_info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + mutex_init(&info->lock); + init_completion(&info->done); + info->dev = &pdev->dev; + + info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!info->mem) { + ret = -ENXIO; + goto fail_free_info; + } + + info->irq = platform_get_irq(pdev, 0); + if (!info->irq) { + ret = -ENXIO; + goto fail_free_info; + } + + if (!request_mem_region(info->mem->start, resource_size(info->mem), + pdev->name)) { + ret = -EBUSY; + goto fail_free_info; + } + + info->regs = ioremap(info->mem->start, resource_size(info->mem)); + if (!info->regs) { + ret = -ENOMEM; + goto fail_release_mem; + } + + ret = request_irq(info->irq, ep93xx_ac97_interrupt, IRQF_TRIGGER_HIGH, + pdev->name, info); + if (ret) + goto fail_unmap_mem; + + ep93xx_ac97_dai.dev = &pdev->dev; + ep93xx_ac97_dai.private_data = info; + ep93xx_ac97_info = info; + + platform_set_drvdata(pdev, info); + + ret = snd_soc_register_dai(&ep93xx_ac97_dai); + if (ret) + goto fail_free_irq; + + return 0; + +fail_free_irq: + platform_set_drvdata(pdev, NULL); + free_irq(info->irq, info); +fail_unmap_mem: + iounmap(info->regs); +fail_release_mem: + release_mem_region(info->mem->start, resource_size(info->mem)); +fail_free_info: + kfree(info); + + return ret; +} + +static int __devexit ep93xx_ac97_remove(struct platform_device *pdev) +{ + struct ep93xx_ac97_info *info = platform_get_drvdata(pdev); + + snd_soc_unregister_dai(&ep93xx_ac97_dai); + + /* disable the AC97 controller */ + ep93xx_ac97_write_reg(info, AC97GCR, 0); + + free_irq(info->irq, info); + iounmap(info->regs); + release_mem_region(info->mem->start, resource_size(info->mem)); + platform_set_drvdata(pdev, NULL); + kfree(info); + + return 0; +} + +static struct platform_driver ep93xx_ac97_driver = { + .probe = ep93xx_ac97_probe, + .remove = __devexit_p(ep93xx_ac97_remove), + .driver = { + .name = "ep93xx-ac97", + .owner = THIS_MODULE, + }, +}; + +static int __init ep93xx_ac97_init(void) +{ + return platform_driver_register(&ep93xx_ac97_driver); +} + +static void __exit ep93xx_ac97_exit(void) +{ + platform_driver_unregister(&ep93xx_ac97_driver); +} + +module_init(ep93xx_ac97_init); +module_exit(ep93xx_ac97_exit); + +MODULE_DESCRIPTION("EP93xx AC97 ASoC Driver"); +MODULE_AUTHOR("Mika Westerberg mika.westerberg@iki.fi"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/ep93xx/ep93xx-ac97.h b/sound/soc/ep93xx/ep93xx-ac97.h new file mode 100644 index 0000000..684c1bb --- /dev/null +++ b/sound/soc/ep93xx/ep93xx-ac97.h @@ -0,0 +1,17 @@ +/* + * sound/soc/ep93xx/ep93xx-ac97.h + * EP93xx AC97 controller driver + * + * Copyright (c) 2010 Mika Westerberg + * + * 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. + */ + +#ifndef _EP93XX_SND_SOC_AC97_H +#define _EP93XX_SND_SOC_AC97_H + +extern struct snd_soc_dai ep93xx_ac97_dai; + +#endif /* _EP93XX_SND_SOC_AC97_H */

Add AC97 audio support for Simplemachines Sim.One board.

Signed-off-by: Mika Westerberg mika.westerberg@iki.fi --- arch/arm/mach-ep93xx/simone.c | 1 + sound/soc/ep93xx/Kconfig | 9 +++++ sound/soc/ep93xx/Makefile | 2 + sound/soc/ep93xx/simone.c | 80 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 92 insertions(+), 0 deletions(-) create mode 100644 sound/soc/ep93xx/simone.c

diff --git a/arch/arm/mach-ep93xx/simone.c b/arch/arm/mach-ep93xx/simone.c index 735aad9..6839428 100644 --- a/arch/arm/mach-ep93xx/simone.c +++ b/arch/arm/mach-ep93xx/simone.c @@ -188,6 +188,7 @@ static void __init simone_init_machine(void) ARRAY_SIZE(simone_i2c_board_info)); ep93xx_register_spi(&simone_spi_info, simone_spi_devices, ARRAY_SIZE(simone_spi_devices)); + ep93xx_register_ac97(); }

MACHINE_START(SIM_ONE, "Simplemachines Sim.One Board") diff --git a/sound/soc/ep93xx/Kconfig b/sound/soc/ep93xx/Kconfig index 4a9d236..4aa6087 100644 --- a/sound/soc/ep93xx/Kconfig +++ b/sound/soc/ep93xx/Kconfig @@ -22,3 +22,12 @@ config SND_EP93XX_SOC_SNAPPERCL15 help Say Y or M here if you want to add support for I2S audio on the Bluewater Systems Snapper CL15 module. + +config SND_EP93XX_SOC_SIMONE + tristate "SoC Audio support for Simplemachines Sim.One board" + depends on SND_EP93XX_SOC && MACH_SIM_ONE + select SND_EP93XX_SOC_AC97 + select SND_SOC_AC97_CODEC + help + Say Y or M here if you want to add support for AC97 audio on the + Simplemachines Sim.One board. diff --git a/sound/soc/ep93xx/Makefile b/sound/soc/ep93xx/Makefile index ac06e00..8e7977f 100644 --- a/sound/soc/ep93xx/Makefile +++ b/sound/soc/ep93xx/Makefile @@ -9,5 +9,7 @@ obj-$(CONFIG_SND_EP93XX_SOC_AC97) += snd-soc-ep93xx-ac97.o

# EP93XX Machine Support snd-soc-snappercl15-objs := snappercl15.o +snd-soc-simone-objs := simone.o

obj-$(CONFIG_SND_EP93XX_SOC_SNAPPERCL15) += snd-soc-snappercl15.o +obj-$(CONFIG_SND_EP93XX_SOC_SIMONE) += snd-soc-simone.o diff --git a/sound/soc/ep93xx/simone.c b/sound/soc/ep93xx/simone.c new file mode 100644 index 0000000..ed189c1 --- /dev/null +++ b/sound/soc/ep93xx/simone.c @@ -0,0 +1,80 @@ +/* + * simone.c -- ASoC audio for Simplemachines Sim.One board + * + * Copyright (c) 2010 Mika Westerberg + * + * Based on snappercl15 machine driver by Ryan Mallon. + * + * 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. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> + +#include <asm/mach-types.h> +#include <mach/hardware.h> + +#include "../codecs/ac97.h" +#include "ep93xx-pcm.h" +#include "ep93xx-ac97.h" + +static struct snd_soc_dai_link simone_dai = { + .name = "AC97", + .stream_name = "AC97 HiFi", + .cpu_dai = &ep93xx_ac97_dai, + .codec_dai = &ac97_dai, +}; + +static struct snd_soc_card snd_soc_simone = { + .name = "Sim.One", + .platform = &ep93xx_soc_platform, + .dai_link = &simone_dai, + .num_links = 1, +}; + +static struct snd_soc_device simone_snd_devdata = { + .card = &snd_soc_simone, + .codec_dev = &soc_codec_dev_ac97, +}; + +static struct platform_device *simone_snd_device; + +static int __init simone_init(void) +{ + int ret; + + if (!machine_is_sim_one()) + return -ENODEV; + + simone_snd_device = platform_device_alloc("soc-audio", -1); + if (!simone_snd_device) + return -ENOMEM; + + platform_set_drvdata(simone_snd_device, &simone_snd_devdata); + simone_snd_devdata.dev = &simone_snd_device->dev; + + ret = platform_device_add(simone_snd_device); + if (ret) + platform_device_put(simone_snd_device); + + return ret; +} + +static void __exit simone_exit(void) +{ + platform_device_unregister(simone_snd_device); +} + +module_init(simone_init); +module_exit(simone_exit); + +MODULE_DESCRIPTION("ALSA SoC Simplemachines Sim.One"); +MODULE_AUTHOR("Mika Westerberg mika.westerberg@iki.fi"); +MODULE_LICENSE("GPL");