The patch add support for SPEAr ASoC machine driver.
Signed-off-by: Rajeev Kumar rajeev-dlh.kumar@st.com --- sound/soc/spear/spear_evb.c | 278 +++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 278 insertions(+), 0 deletions(-) create mode 100644 sound/soc/spear/spear_evb.c
diff --git a/sound/soc/spear/spear_evb.c b/sound/soc/spear/spear_evb.c new file mode 100644 index 0000000..66907c0 --- /dev/null +++ b/sound/soc/spear/spear_evb.c @@ -0,0 +1,278 @@ +/* + * ASoC machine driver for SPEAr evaluation boards + * + * sound/soc/spear/spear_evb.c + * + * Copyright (C) 2012 ST Microelectronics + * Rajeev Kumarrajeev-dlh.kumar@st.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/io.h> +#include <linux/platform_device.h> +#include <linux/module.h> + +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <mach/hardware.h> +#include <mach/misc_regs.h> + +static int sta529_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 *codec_dai = rtd->codec_dai; + int ret = 0; + u32 channel; + + /* set codec DAI configuration */ + ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_CBS_CFM); + if (ret < 0) + return ret; + + channel = params_channels(params); + + if (cpu_is_spear1340()) { +#ifdef CONFIG_CPU_SPEAR1340 + u32 mode = 0; + u32 val = readl(VA_SPEAR1340_PERIP_CFG); + + switch (channel) { + case 8: + mode = SPEAR1340_I2S_CHNL_7_1; + break; + case 6: + mode = SPEAR1340_I2S_CHNL_5_1; + break; + case 4: + mode = SPEAR1340_I2S_CHNL_3_1; + break; + case 2: + default: + mode = SPEAR1340_I2S_CHNL_2_0; + break; + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + mode = mode << SPEAR1340_I2S_CHNL_PLAY_SHIFT; + val = (val & ~SPEAR1340_I2S_CHNL_PLAY_MASK) | mode; + } else { + mode = mode << SPEAR1340_I2S_CHNL_REC_SHIFT; + val = (val & ~SPEAR1340_I2S_CHNL_REC_MASK) | mode; + } + writel(val, VA_SPEAR1340_PERIP_CFG); +#endif + } else if (cpu_is_spear1300() || cpu_is_spear1310_reva() || + cpu_is_spear900() || cpu_is_spear1310()) { +#if defined(CONFIG_CPU_SPEAR1300) || defined(CONFIG_CPU_SPEAR1310_REVA) || \ + defined(CONFIG_CPU_SPEAR900) || defined(CONFIG_CPU_SPEAR1310) + /* setting mode 0 in conf register: 32c offset */ + u32 val = readl(VA_PERIP_CFG); + val &= ~I2S_MODE_MASK; + val |= I2S_MODE_I2S2_ONE_PORT; + writel(val, VA_PERIP_CFG); +#endif + } + + return 0; +} + +/* Audio machine driver for SPEAr evb */ +static struct snd_soc_ops sta529_ops = { + .hw_params = sta529_hw_params, +}; + +/* SPEAr audio interface glue - connects codec <--> CPU <--> platform */ +static struct snd_soc_dai_link spear_evb_dai[] = { + { + .name = "sta529-pcm", + .stream_name = "pcm", + .cpu_dai_name = "designware-i2s.0", + .platform_name = "spear-pcm-audio", + .codec_dai_name = "sta529-audio", + .codec_name = "sta529-codec.0-001a", + .ops = &sta529_ops, + }, +}; + +/* SPEAr audio machine driver */ +static struct snd_soc_card spear_snd_card = { + .name = "spear-evb", + .dai_link = spear_evb_dai, + .num_links = ARRAY_SIZE(spear_evb_dai), +}; + +/* SPEAr320s audio interface glue - connects codec <--> CPU <--> platform */ +static struct snd_soc_dai_link spear320s_evb_dai[] = { + { + .name = "sta529-pcm", + .stream_name = "pcm", + .cpu_dai_name = "designware-i2s", + .platform_name = "spear-pcm-audio", + .codec_dai_name = "sta529-audio", + .codec_name = "sta529-codec.0-001a", + .ops = &sta529_ops, + }, +}; + +/* SPEAr320s audio machine driver */ +static struct snd_soc_card spear320s_snd_card = { + .name = "spear320s-evb", + .dai_link = spear320s_evb_dai, + .num_links = ARRAY_SIZE(spear320s_evb_dai), +}; + +/* LCAD audio interface glue - connects codec <--> CPU <--> platform */ +static struct snd_soc_dai_link lcad_evb_dai[] = { + { + .name = "sta529-pcm0", + .stream_name = "I2S Playback", + .cpu_dai_name = "designware-i2s.0", + .platform_name = "spear-pcm-audio", + .codec_dai_name = "sta529-audio", + .codec_name = "sta529-codec.0-001a", + .ops = &sta529_ops, + }, { + .name = "sta529-pcm1", + .stream_name = "I2S Capture", + .cpu_dai_name = "designware-i2s.1", + .platform_name = "spear-pcm-audio", + .codec_dai_name = "sta529-audio", + .codec_name = "sta529-codec.0-001a", + .ops = &sta529_ops, + }, +}; + +static struct snd_soc_card lcad_snd_card = { + .name = "lcad-evb", + .dai_link = lcad_evb_dai, + .num_links = ARRAY_SIZE(lcad_evb_dai), +}; + +/* Audio machine driver for SPEAr1340 evb */ + +/* SPEAr1340 audio interface glue - connects codec <--> CPU <--> platform */ +static struct snd_soc_dai_link spear1340_evb_dai[] = { + { + .name = "spdif-pcm0", + .stream_name = "SPDIF Playback", + .cpu_dai_name = "spdif-out", + .platform_name = "spear-pcm-audio", + .codec_dai_name = "dit-hifi", + .codec_name = "spdif-dit", + .ops = NULL, + }, { + .name = "spdif-pcm1", + .stream_name = "SPDIF Capture", + .cpu_dai_name = "spdif-in", + .platform_name = "spear-pcm-audio", + .codec_dai_name = "dir-hifi", + .codec_name = "spdif-dir", + .ops = NULL, + }, { + .name = "sta529-pcm0", + .stream_name = "I2S Playback", + .cpu_dai_name = "designware-i2s.0", + .platform_name = "spear-pcm-audio", + .codec_dai_name = "sta529-audio", + .codec_name = "sta529-codec.0-001a", + .ops = &sta529_ops, + }, { + .name = "sta529-pcm1", + .stream_name = "I2S Capture", + .cpu_dai_name = "designware-i2s.1", + .platform_name = "spear-pcm-audio", + .codec_dai_name = "sta529-audio", + .codec_name = "sta529-codec.0-001a", + .ops = &sta529_ops, + }, +}; + +static struct snd_soc_card spear1340_snd_card = { + .name = "spear1340-evb", + .dai_link = spear1340_evb_dai, + .num_links = ARRAY_SIZE(spear1340_evb_dai), +}; + +static struct platform_device *evb_snd_device; +#if defined(CONFIG_CPU_SPEAR1340) +static struct platform_device *spdif_dit_device; +static struct platform_device *spdif_dir_device; +#endif + +static int __init spear_audio_init(void) +{ + int ret; + struct snd_soc_card *spear_soc_card; + + if (machine_is_spear1340_lcad()) + spear_soc_card = &lcad_snd_card; + else if (cpu_is_spear1340()) + spear_soc_card = &spear1340_snd_card; + else if (cpu_is_spear320()) + spear_soc_card = &spear320s_snd_card; + else + spear_soc_card = &spear_snd_card; + +#if defined(CONFIG_CPU_SPEAR1340) + if (cpu_is_spear1340()) { + /* Create and register spdif platform devices */ + spdif_dit_device = platform_device_alloc("spdif-dit", -1); + if (!spdif_dit_device) { + printk(KERN_ERR "spdif transceiver " \ + "platform_device_alloc fails\n"); + return -ENOMEM; + } + ret = platform_device_add(spdif_dit_device); + if (ret) { + printk(KERN_ERR "Unable to add spdif transceiver " \ + "platform device\n"); + platform_device_put(spdif_dit_device); + } + + spdif_dir_device = platform_device_alloc("spdif-dir", -1); + if (!spdif_dir_device) { + printk(KERN_ERR "spdif receive platform_device_alloc " \ + "fails\n"); + return -ENOMEM; + } + ret = platform_device_add(spdif_dir_device); + if (ret) { + printk(KERN_ERR "Unable to add spdif receive platform" \ + "device\n"); + platform_device_put(spdif_dir_device); + } + } +#endif + /* Create and register platform device */ + evb_snd_device = platform_device_alloc("soc-audio", -1); + if (!evb_snd_device) { + printk(KERN_ERR "soc audio platform_device_alloc fails\n"); + return -ENOMEM; + } + platform_set_drvdata(evb_snd_device, spear_soc_card); + ret = platform_device_add(evb_snd_device); + if (ret) { + printk(KERN_ERR "Unable to add platform device\n"); + platform_device_put(evb_snd_device); + } + + return ret; +} +module_init(spear_audio_init); + +static void __exit spear_audio_exit(void) +{ + platform_device_unregister(evb_snd_device); +} +module_exit(spear_audio_exit); + +MODULE_AUTHOR("Rajeev Kumar rajeev-dlh.kumar@st.com"); +MODULE_DESCRIPTION("ST SPEAr EVB ASoC driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:spear_evb");