[PATCH v3 0/3] ALSA SoC: MPC5200 audio driver
Grant Likely
grant.likely at secretlab.ca
Tue Jul 22 16:58:09 EST 2008
Hi all,
Here is the latest series for adding MPC5200 I2S and TI AIC26 codec
support to ALSA SoC. I believe all the comments are addressed and I
hope that this series is now ready to be merged. I would really like
to see these ones land in 2.6.27.
Thanks,
g.
include/sound/soc-of-simple.h | 21 +
sound/soc/codecs/Kconfig | 4 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tlv320aic26.c | 519 +++++++++++++++++++++++
sound/soc/codecs/tlv320aic26.h | 93 ++++
sound/soc/fsl/Kconfig | 10 +
sound/soc/fsl/Makefile | 5 +
sound/soc/fsl/mpc5200_psc_i2s.c | 884 +++++++++++++++++++++++++++++++++++++++
sound/soc/fsl/soc-of-simple.c | 171 ++++++++
9 files changed, 1709 insertions(+), 0 deletions(-)
Cheers,
g.
On Tue, Jul 22, 2008 at 12:53 AM, Grant Likely
<grant.likely at secretlab.ca> wrote:
> From: Grant Likely <grant.likely at secretlab.ca>
>
> Simple utility layer for creating ASoC machine instances based on data
> in the OpenFirmware device tree. OF aware platform drivers and codec
> drivers register themselves with this framework and the framework
> automatically instantiates a machine driver. At the moment, the driver
> is not very capable and it is expected to be extended as more features
> are needed for specifying the configuration in the device tree.
>
> This is most likely temporary glue code to work around limitations in
> the ASoC v1 framework. When v2 is merged, most of this driver will
> need to be reworked.
>
> Signed-off-by: Grant Likely <grant.likely at secretlab.ca>
> ---
>
> include/sound/soc-of-simple.h | 21 +++++
> sound/soc/fsl/Kconfig | 3 +
> sound/soc/fsl/Makefile | 3 +
> sound/soc/fsl/soc-of-simple.c | 171 +++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 198 insertions(+), 0 deletions(-)
>
> diff --git a/include/sound/soc-of-simple.h b/include/sound/soc-of-simple.h
> new file mode 100644
> index 0000000..696fc51
> --- /dev/null
> +++ b/include/sound/soc-of-simple.h
> @@ -0,0 +1,21 @@
> +/*
> + * OF helpers for ALSA SoC
> + *
> + * Copyright (C) 2008, Secret Lab Technologies Ltd.
> + */
> +
> +#ifndef _INCLUDE_SOC_OF_H_
> +#define _INCLUDE_SOC_OF_H_
> +
> +#include <linux/of.h>
> +#include <sound/soc.h>
> +
> +int of_snd_soc_register_codec(struct snd_soc_codec_device *codec_dev,
> + void *codec_data, struct snd_soc_dai *dai,
> + struct device_node *node);
> +
> +int of_snd_soc_register_platform(struct snd_soc_platform *platform,
> + struct device_node *node,
> + struct snd_soc_dai *cpu_dai);
> +
> +#endif /* _INCLUDE_SOC_OF_H_ */
> diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
> index 3368ace..398f002 100644
> --- a/sound/soc/fsl/Kconfig
> +++ b/sound/soc/fsl/Kconfig
> @@ -1,3 +1,6 @@
> +config SND_SOC_OF_SIMPLE
> + tristate
> +
> config SND_SOC_MPC8610
> bool "ALSA SoC support for the MPC8610 SOC"
> depends on MPC8610_HPCD
> diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
> index 62f680a..aa2100b 100644
> --- a/sound/soc/fsl/Makefile
> +++ b/sound/soc/fsl/Makefile
> @@ -1,3 +1,6 @@
> +# Simple machine driver that extracts configuration from the OF device tree
> +obj-$(CONFIG_SND_SOC_OF_SIMPLE) += soc-of-simple.o
> +
> # MPC8610 HPCD Machine Support
> obj-$(CONFIG_SND_SOC_MPC8610_HPCD) += mpc8610_hpcd.o
>
> diff --git a/sound/soc/fsl/soc-of-simple.c b/sound/soc/fsl/soc-of-simple.c
> new file mode 100644
> index 0000000..0382fda
> --- /dev/null
> +++ b/sound/soc/fsl/soc-of-simple.c
> @@ -0,0 +1,171 @@
> +/*
> + * OF helpers for ALSA SoC Layer
> + *
> + * Copyright (C) 2008, Secret Lab Technologies Ltd.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/moduleparam.h>
> +#include <linux/init.h>
> +#include <linux/delay.h>
> +#include <linux/pm.h>
> +#include <linux/bitops.h>
> +#include <linux/platform_device.h>
> +#include <linux/of.h>
> +#include <sound/core.h>
> +#include <sound/pcm.h>
> +#include <sound/pcm_params.h>
> +#include <sound/soc.h>
> +#include <sound/soc-of-simple.h>
> +#include <sound/initval.h>
> +
> +MODULE_AUTHOR("Grant Likely <grant.likely at secretlab.ca>");
> +MODULE_LICENSE("GPL");
> +MODULE_DESCRIPTION("ALSA SoC OpenFirmware bindings");
> +
> +static DEFINE_MUTEX(of_snd_soc_mutex);
> +static LIST_HEAD(of_snd_soc_device_list);
> +static int of_snd_soc_next_index;
> +
> +struct of_snd_soc_device {
> + int id;
> + struct list_head list;
> + struct snd_soc_device device;
> + struct snd_soc_machine machine;
> + struct snd_soc_dai_link dai_link;
> + struct platform_device *pdev;
> + struct device_node *platform_node;
> + struct device_node *codec_node;
> +};
> +
> +static struct snd_soc_ops of_snd_soc_ops = {
> +};
> +
> +static struct of_snd_soc_device *
> +of_snd_soc_get_device(struct device_node *codec_node)
> +{
> + struct of_snd_soc_device *of_soc;
> +
> + list_for_each_entry(of_soc, &of_snd_soc_device_list, list) {
> + if (of_soc->codec_node == codec_node)
> + return of_soc;
> + }
> +
> + of_soc = kzalloc(sizeof(struct of_snd_soc_device), GFP_KERNEL);
> + if (!of_soc)
> + return NULL;
> +
> + /* Initialize the structure and add it to the global list */
> + of_soc->codec_node = codec_node;
> + of_soc->id = of_snd_soc_next_index++;
> + of_soc->machine.dai_link = &of_soc->dai_link;
> + of_soc->machine.num_links = 1;
> + of_soc->device.machine = &of_soc->machine;
> + of_soc->dai_link.ops = &of_snd_soc_ops;
> + list_add(&of_soc->list, &of_snd_soc_device_list);
> +
> + return of_soc;
> +}
> +
> +static void of_snd_soc_register_device(struct of_snd_soc_device *of_soc)
> +{
> + struct platform_device *pdev;
> + int rc;
> +
> + /* Only register the device if both the codec and platform have
> + * been registered */
> + if ((!of_soc->device.codec_data) || (!of_soc->platform_node))
> + return;
> +
> + pr_info("platform<-->codec match achieved; registering machine\n");
> +
> + pdev = platform_device_alloc("soc-audio", of_soc->id);
> + if (!pdev) {
> + pr_err("of_soc: platform_device_alloc() failed\n");
> + return;
> + }
> +
> + pdev->dev.platform_data = of_soc;
> + platform_set_drvdata(pdev, &of_soc->device);
> + of_soc->device.dev = &pdev->dev;
> +
> + /* The ASoC device is complete; register it */
> + rc = platform_device_add(pdev);
> + if (rc) {
> + pr_err("of_soc: platform_device_add() failed\n");
> + return;
> + }
> +
> +}
> +
> +int of_snd_soc_register_codec(struct snd_soc_codec_device *codec_dev,
> + void *codec_data, struct snd_soc_dai *dai,
> + struct device_node *node)
> +{
> + struct of_snd_soc_device *of_soc;
> + int rc = 0;
> +
> + pr_info("registering ASoC codec driver: %s\n", node->full_name);
> +
> + mutex_lock(&of_snd_soc_mutex);
> + of_soc = of_snd_soc_get_device(node);
> + if (!of_soc) {
> + rc = -ENOMEM;
> + goto out;
> + }
> +
> + /* Store the codec data */
> + of_soc->device.codec_data = codec_data;
> + of_soc->device.codec_dev = codec_dev;
> + of_soc->dai_link.name = (char *)node->name;
> + of_soc->dai_link.stream_name = (char *)node->name;
> + of_soc->dai_link.codec_dai = dai;
> +
> + /* Now try to register the SoC device */
> + of_snd_soc_register_device(of_soc);
> +
> + out:
> + mutex_unlock(&of_snd_soc_mutex);
> + return rc;
> +}
> +EXPORT_SYMBOL_GPL(of_snd_soc_register_codec);
> +
> +int of_snd_soc_register_platform(struct snd_soc_platform *platform,
> + struct device_node *node,
> + struct snd_soc_dai *cpu_dai)
> +{
> + struct of_snd_soc_device *of_soc;
> + struct device_node *codec_node;
> + const phandle *handle;
> + int len, rc = 0;
> +
> + pr_info("registering ASoC platform driver: %s\n", node->full_name);
> +
> + handle = of_get_property(node, "codec-handle", &len);
> + if (!handle || len < sizeof(handle))
> + return -ENODEV;
> + codec_node = of_find_node_by_phandle(*handle);
> + if (!codec_node)
> + return -ENODEV;
> + pr_info("looking for codec: %s\n", codec_node->full_name);
> +
> + mutex_lock(&of_snd_soc_mutex);
> + of_soc = of_snd_soc_get_device(codec_node);
> + if (!of_soc) {
> + rc = -ENOMEM;
> + goto out;
> + }
> +
> + of_soc->platform_node = node;
> + of_soc->dai_link.cpu_dai = cpu_dai;
> + of_soc->device.platform = platform;
> + of_soc->machine.name = of_soc->dai_link.cpu_dai->name;
> +
> + /* Now try to register the SoC device */
> + of_snd_soc_register_device(of_soc);
> +
> + out:
> + mutex_unlock(&of_snd_soc_mutex);
> + return rc;
> +}
> +EXPORT_SYMBOL_GPL(of_snd_soc_register_platform);
>
>
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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