Signed-off-by: Yoichi Yuasa yuasa@linux-mips.org --- sound/soc/omap/Kconfig | 11 +++ sound/soc/omap/Makefile | 2 + sound/soc/omap/omap-ymu831.c | 169 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 182 insertions(+) create mode 100644 sound/soc/omap/omap-ymu831.c
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig index 7048137..ff8975b 100644 --- a/sound/soc/omap/Kconfig +++ b/sound/soc/omap/Kconfig @@ -131,3 +131,14 @@ config SND_OMAP_SOC_ZOOM2 select SND_SOC_TWL4030 help Say Y if you want to add support for Soc audio on Zoom2 board. + +config SND_OMAP_SOC_OMAP_YMU831 + tristate "SoC Audio support for OMAP4 boards with Yamaha YMU831 codec" + depends on SND_OMAP_SOC && ARCH_OMAP4 && SPI_MASTER + select SND_OMAP_SOC_MCBSP + select SND_SOC_YMU831 + help + Say Y if you want to add support for SoC audio on OMAP4 boards + using Yamaha YMU831 codec. This driver currently supports: + - SDP4430 + - PandaBoard (4430) diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile index 19637e5..4bbff7b 100644 --- a/sound/soc/omap/Makefile +++ b/sound/soc/omap/Makefile @@ -23,6 +23,7 @@ snd-soc-omap-twl4030-objs := omap-twl4030.o snd-soc-omap3pandora-objs := omap3pandora.o snd-soc-zoom2-objs := zoom2.o snd-soc-omap-hdmi-card-objs := omap-hdmi-card.o +snd-soc-omap-ymu831-objs := omap-ymu831.o
obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o obj-$(CONFIG_SND_OMAP_SOC_RX51) += snd-soc-rx51.o @@ -36,3 +37,4 @@ obj-$(CONFIG_SND_OMAP_SOC_OMAP_TWL4030) += snd-soc-omap-twl4030.o obj-$(CONFIG_SND_OMAP_SOC_OMAP3_PANDORA) += snd-soc-omap3pandora.o obj-$(CONFIG_SND_OMAP_SOC_ZOOM2) += snd-soc-zoom2.o obj-$(CONFIG_SND_OMAP_SOC_OMAP_HDMI) += snd-soc-omap-hdmi-card.o +obj-$(CONFIG_SND_OMAP_SOC_OMAP_YMU831) += snd-soc-omap-ymu831.o diff --git a/sound/soc/omap/omap-ymu831.c b/sound/soc/omap/omap-ymu831.c new file mode 100644 index 0000000..2f16ca2 --- /dev/null +++ b/sound/soc/omap/omap-ymu831.c @@ -0,0 +1,169 @@ +/* + * ALSA SoC for OMAP4 boards with Yamaha YMU831 codec + * + * Copyright (c) 2011 Yamaha Corporation + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + */ +#include <linux/io.h> +#include <linux/module.h> +#include <sound/soc.h> +#include <asm/mach-types.h> + +#include "omap-mcbsp.h" +#include "../codecs/ymu831/ymu831.h" + +#define INTERNAL_FREQ (196608000 / 2) + +static int omap_ymu831_dai_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + void *base; + int internal_freq = INTERNAL_FREQ; + int dev, ret; + + base = ioremap(0x4a004108, 16); + if (base) { + if (params_rate(params) < 16000) { + internal_freq /= 4; + iowrite32(ioread32(base) | 0x02, base); + } else + iowrite32(ioread32(base) & ~0x02, base); + iounmap(base); + } + + /* Set cpu DAI configuration */ + ret = snd_soc_dai_set_fmt(cpu_dai, + SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS); + if (ret < 0) { + pr_err("can't set cpu DAI configuration %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_fmt(codec_dai, + SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS); + if (ret < 0) { + pr_err("can't set codec DAI configuration %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_sysclk(cpu_dai, + OMAP_MCBSP_SYSCLK_CLK, + internal_freq, SND_SOC_CLOCK_OUT); + if (ret < 0) { + pr_err("can't set cpu system clock %d\n", ret); + return ret; + } + + dev = internal_freq / (params_rate(params) * 32); + ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, dev); + if (ret < 0) { + pr_err("can't set cpu clkdiv %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_clkdiv(codec_dai, + MC_ASOC_BCLK_MULT, MC_ASOC_LRCK_X32); + if (ret < 0) { + pr_err("can't set codec clkdiv %d\n", ret); + return ret; + } + + return 0; +} + +static struct snd_soc_ops omap_ymu831_dai_ops = { + .hw_params = omap_ymu831_dai_hw_params, +}; + +static int omap_ymu831_init(struct snd_soc_pcm_runtime *rtd) +{ + rtd->pmdown_time = 500; + + return 0; +} + +/* Machine DAI Configuration */ +static struct snd_soc_dai_link omap_ymu831_dai[] = { + { + .name = "Application", + .stream_name = "HiFi Audio", + .codec_dai_name = MC_ASOC_NAME "-da0", + .cpu_dai_name = "omap-mcbsp.2", + .codec_name = "spi1.0", + .platform_name = "omap-pcm-audio", + .init = omap_ymu831_init, + .ops = &omap_ymu831_dai_ops, + }, +}; + +/* Audio machine driver */ +static struct snd_soc_card omap_ymu831_card = { + .name = "omap-" MC_ASOC_NAME, + .owner = THIS_MODULE, + .dai_link = omap_ymu831_dai, + .long_name = "Yamaha YMU831 ASOC for OMAP", + .num_links = ARRAY_SIZE(omap_ymu831_dai), +}; + +static __devinit int omap_ymu831_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card = &omap_ymu831_card; + int ret; + + if (!machine_is_omap_4430sdp() && !machine_is_omap4_panda()) { + pr_debug("Not SDP4430 or PandaBoard!\n"); + return -ENODEV; + } + + card->dev = &pdev->dev; + ret = snd_soc_register_card(card); + if (ret) + dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", + ret); + + return ret; +} + +static int __devexit omap_ymu831_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + + return snd_soc_unregister_card(card); +} + +static struct platform_driver omap_ymu831_driver = { + .driver = { + .name = "omap-" MC_ASOC_NAME, + .owner = THIS_MODULE, + .pm = &snd_soc_pm_ops, + }, + .probe = omap_ymu831_probe, + .remove = __devexit_p(omap_ymu831_remove), +}; + +module_platform_driver(omap_ymu831_driver); + +MODULE_AUTHOR("Yamaha Corporation"); +MODULE_DESCRIPTION("ALSA SoC for OMAP4 boards with Yamaha YMU831 codec"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:omap-ymu831");