diff options
Diffstat (limited to 'sound/soc/tegra/tegra_whistler.c')
| -rw-r--r-- | sound/soc/tegra/tegra_whistler.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_whistler.c b/sound/soc/tegra/tegra_whistler.c new file mode 100644 index 000000000000..bed84bb5b3f0 --- /dev/null +++ b/sound/soc/tegra/tegra_whistler.c @@ -0,0 +1,180 @@ +/* + * sound/soc/tegra/tegra_harmony.c + * + * ALSA SOC driver for NVIDIA Tegra SoCs + * + * Copyright (C) 2010 NVIDIA Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/timer.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/i2c.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/tlv.h> +#include <linux/clk.h> +#include <asm/mach-types.h> +#include <asm/hardware/scoop.h> +#include <linux/io.h> +#include "nvodm_query_discovery.h" +#include "../codecs/wm8753.h" +#include "tegra_transport.h" + +static struct platform_device *tegra_snd_device; +NvU64 codec_guid; + +#define NVODM_CODEC_MAX_CLOCKS 3 + +static unsigned int clock_frequencies[NVODM_CODEC_MAX_CLOCKS]; + +static int set_clock_source_on_codec(NvU64 codec_guid,int IsEnable) +{ + const NvOdmPeripheralConnectivity *p_connectivity = NULL; + unsigned int clock_instances[NVODM_CODEC_MAX_CLOCKS]; + unsigned int num_clocks; + p_connectivity = NvOdmPeripheralGetGuid(codec_guid); + if (p_connectivity == NULL) + return NV_FALSE; + + if (IsEnable) { + if (!NvOdmExternalClockConfig(codec_guid, NV_FALSE, + clock_instances, + clock_frequencies, &num_clocks)) + return NV_FALSE; + } else { + if (!NvOdmExternalClockConfig(codec_guid, + NV_TRUE, + clock_instances, + clock_frequencies, + &num_clocks)); + return NV_FALSE; + } + return NV_TRUE; +} + +static int tegra_whistler_hifi_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + /* Set codec DAI configuration */ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; + int ret; + + ret = snd_soc_dai_set_fmt(codec_dai,SND_SOC_DAIFMT_I2S); + + if (ret < 0) + return ret; + /* set the codec system clock for DAC and ADC */ + ret = snd_soc_dai_set_sysclk(codec_dai, + WM8753_MCLK, + clock_frequencies[0] * 1000, + SND_SOC_CLOCK_IN); + if (ret < 0) + return ret; + /* Disabling use of PLL1 since we are using only hifi for now + We may need it when we use voice */ + ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0); + if (ret < 0) + return ret; + + return 0; +} + +static struct snd_soc_ops tegra_whistler_hifi_ops = { + .hw_params = tegra_whistler_hifi_hw_params, +}; + +static int tegra_wm8753_init(struct snd_soc_codec *codec) +{ + return 0; +} + +extern struct snd_soc_dai tegra_i2s_rpc_dai; +extern struct snd_soc_platform tegra_soc_platform; + +static struct snd_soc_dai_link tegra_whistler_dai = { + /* Hifi Playback only for the time being */ + .name = "WM8753", + .stream_name = "WM8753 HiFi", + .cpu_dai = &tegra_i2s_rpc_dai, + .codec_dai = &wm8753_dai[WM8753_DAI_HIFI], + .init = tegra_wm8753_init, + .ops = &tegra_whistler_hifi_ops, +}; + +static struct snd_soc_card tegra_whistler = { + .name = "tegra", + .platform = &tegra_soc_platform, + .dai_link = &tegra_whistler_dai, + .num_links = 1, +}; + +static struct wm8753_setup_data whistler_setup_data = { + .i2c_bus = WHISTLER_CODEC_BUS, + .i2c_address = WHISTLER_CODEC_ADDRESS, +}; + +static struct snd_soc_device tegra_whistler_snd_devdata = { + .card = &tegra_whistler, + .codec_dev = &soc_codec_dev_wm8753, + .codec_data = &whistler_setup_data, +}; + +static int __init tegra_soc_init(void) +{ + int ret; + tegra_snd_device = platform_device_alloc("soc-audio", -1); + if (!tegra_snd_device) + return -ENOMEM; + + platform_set_drvdata(tegra_snd_device, &tegra_whistler_snd_devdata); + tegra_whistler_snd_devdata.dev = &tegra_snd_device->dev; + + ret = platform_device_add(tegra_snd_device); + if (ret) { + snd_printk(KERN_ERR "tegra audio device could not be added \n"); + platform_device_put(tegra_snd_device); + return ret; + } + + codec_guid = NV_ODM_GUID('w','o','l','f','8','7','5','3'); + + set_clock_source_on_codec(codec_guid,NV_TRUE); + if (ret != 0) + platform_device_unregister(tegra_snd_device); + + return ret; +} + +static void __exit tegra_soc_exit(void) +{ + set_clock_source_on_codec(codec_guid,0); + platform_device_unregister(tegra_snd_device); +} + +module_init(tegra_soc_init); +module_exit(tegra_soc_exit); + +/* Module information */ +MODULE_DESCRIPTION("Tegra SoC Sound"); +MODULE_LICENSE("GPL"); |