Fabric bindings for STAC9766 on the Efika. This includes an example of a custom fabric driver.
Signed-off-by: Jon Smirl jonsmirl@gmail.com --- arch/powerpc/platforms/52xx/efika.c | 8 +++ sound/soc/fsl/Kconfig | 8 +++ sound/soc/fsl/Makefile | 3 + sound/soc/fsl/efika-audio-fabric.c | 95 +++++++++++++++++++++++++++++++++++ 4 files changed, 113 insertions(+), 1 deletions(-) create mode 100644 sound/soc/fsl/efika-audio-fabric.c
diff --git a/arch/powerpc/platforms/52xx/efika.c b/arch/powerpc/platforms/52xx/efika.c index a2068fa..c7a6a48 100644 --- a/arch/powerpc/platforms/52xx/efika.c +++ b/arch/powerpc/platforms/52xx/efika.c @@ -211,12 +211,18 @@ static int __init efika_probe(void) return 1; }
+static void __init efika_declare_platform_devices(void) +{ + mpc52xx_declare_of_platform_devices(); + platform_device_register_simple("efika-audio-fabric", 0, NULL, 0); +} + define_machine(efika) { .name = EFIKA_PLATFORM_NAME, .probe = efika_probe, .setup_arch = efika_setup_arch, - .init = mpc52xx_declare_of_platform_devices, + .init = efika_declare_platform_devices, .show_cpuinfo = efika_show_cpuinfo, .init_IRQ = mpc52xx_init_irq, .get_irq = mpc52xx_get_irq, diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig index d8f63f5..266c6b7 100644 --- a/sound/soc/fsl/Kconfig +++ b/sound/soc/fsl/Kconfig @@ -40,4 +40,12 @@ config SND_SOC_MPC5200_AC97 help Say Y here to support the MPC5200 PSCs in AC97 mode.
+config SND_MPC52xx_SOC_EFIKA + tristate "SoC AC97 Audio support for bbplan Efika and STAC9766" + depends on PPC_EFIKA + select SND_SOC_MPC5200_AC97 + select SND_SOC_STAC9766 + help + Say Y if you want to add support for sound on the Efika. +
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile index 14631a1..f406470 100644 --- a/sound/soc/fsl/Makefile +++ b/sound/soc/fsl/Makefile @@ -15,3 +15,6 @@ obj-$(CONFIG_SND_MPC52xx_DMA) += mpc5200_dma.o obj-$(CONFIG_SND_SOC_MPC5200_I2S) += mpc5200_psc_i2s.o obj-$(CONFIG_SND_SOC_MPC5200_AC97) += mpc5200_psc_ac97.o
+# MPC5200 Machine Support +obj-$(CONFIG_SND_MPC52xx_SOC_EFIKA) += efika-audio-fabric.o + diff --git a/sound/soc/fsl/efika-audio-fabric.c b/sound/soc/fsl/efika-audio-fabric.c new file mode 100644 index 0000000..56ae471 --- /dev/null +++ b/sound/soc/fsl/efika-audio-fabric.c @@ -0,0 +1,95 @@ +/* + * Efika driver for the PSC of the Freescale MPC52xx configured as AC97 interface + * + * Copyright 2008 Jon Smirl, Digispeaker + * Author: Jon Smirl jonsmirl@gmail.com + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/of_device.h> +#include <linux/of_platform.h> +#include <linux/dma-mapping.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/initval.h> +#include <sound/soc.h> +#include <sound/soc-of-simple.h> + +#include "mpc5200_dma.h" +#include "mpc5200_psc_ac97.h" +#include "../codecs/stac9766.h" + +static int efika_init(struct snd_soc_codec *codec) +{ + /* Skeleton driver showing framework for setting + * up board specific fabric drivers. + * + * set up Efika specific controls here + * + * Loading of this driver is trigger by + * platform_device_register_simple("efika-audio-fabric", 0, NULL, 0); + * in arch/powerpc/platforms/52xx/efika.c + */ + return 0; +} + +static int efika_stac9766_probe(struct platform_device *pdev) +{ + of_snd_soc_register_fabric("Efika", NULL, efika_init); + return 0; +} + +#ifdef CONFIG_PM + +static int efika_stac9766_suspend(struct platform_device *pdev, + pm_message_t state) +{ + return 0; +} + +static int efika_stac9766_resume(struct platform_device *pdev) +{ + return 0; +} + +#else +#define efika_stac9766_suspend NULL +#define efika_stac9766_resume NULL +#endif + +static struct platform_driver efika_fabric = { + .probe = efika_stac9766_probe, + .suspend = efika_stac9766_suspend, + .resume = efika_stac9766_resume, + .driver = { + .name = "efika-audio-fabric", + }, +}; + +static __init int efika_fabric_init(void) +{ + return platform_driver_register(&efika_fabric); +} + +static __exit void efika_fabric_exit(void) +{ +} + +module_init(efika_fabric_init); +module_exit(efika_fabric_exit); + + +MODULE_AUTHOR("Jon Smirl jonsmirl@gmail.com"); +MODULE_DESCRIPTION(DRV_NAME ": mpc5200 Efika fabric driver"); +MODULE_LICENSE("GPL"); +