From ae63d1dc308dd20fc42c402185796c7d7d883cfc Mon Sep 17 00:00:00 2001 From: Nitin Pai Date: Mon, 12 Mar 2012 17:24:04 +0530 Subject: ASoC: tegra: p1852: Add P1852-board machine driver Added machine driver for P1852 board. The driver supports a plug/play architecture where the details of the codec_driver/codec_dai will come from the top level board config file. Bug 948478 Change-Id: Id34a34b224e02b61475ca17253c1b13893a09e6c Signed-off-by: Nitin Pai Reviewed-on: http://git-master/r/89474 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Varun Colbert Tested-by: Varun Colbert --- sound/soc/tegra/Kconfig | 14 +++ sound/soc/tegra/Makefile | 2 + sound/soc/tegra/tegra_p1852.c | 272 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 288 insertions(+) create mode 100644 sound/soc/tegra/tegra_p1852.c (limited to 'sound') diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig index 5cda31dc461e..5f37ba27a1ea 100644 --- a/sound/soc/tegra/Kconfig +++ b/sound/soc/tegra/Kconfig @@ -86,6 +86,20 @@ config SND_SOC_TEGRA_TRIMSLICE Say Y or M here if you want to add support for SoC audio on the TrimSlice platform. +config SND_SOC_TEGRA_P1852 + tristate "SoC Audio support for P1852 SKUs" + depends on SND_SOC_TEGRA + depends on MACH_P1852 + select SND_SOC_TEGRA30_I2S if ARCH_TEGRA_3x_SOC + select SND_SOC_TEGRA30_SPDIF if ARCH_TEGRA_3x_SOC + select SND_SOC_SPDIF + select SND_SOC_TEGRA30_DAM if ARCH_TEGRA_3x_SOC + help + Say Y or M here if you want to add support for SoC audio on the + TEGRA P1852 SKUs. These are plug-n-play boards and and the codecs + used by the system integrator needs to be provided while instantiating + the driver. + config MACH_HAS_SND_SOC_TEGRA_WM8753 bool help diff --git a/sound/soc/tegra/Makefile b/sound/soc/tegra/Makefile index 766e66adb85d..d546046d1e1d 100644 --- a/sound/soc/tegra/Makefile +++ b/sound/soc/tegra/Makefile @@ -29,6 +29,7 @@ snd-soc-tegra-max98088-objs := tegra_max98088.o snd-soc-tegra-aic326x-objs := tegra_aic326x.o snd-soc-tegra-rt5640-objs := tegra_rt5640.o snd-soc-tegra-max98095-objs := tegra_max98095.o +snd-soc-tegra-p1852-objs := tegra_p1852.o obj-$(CONFIG_SND_SOC_TEGRA_WM8903) += snd-soc-tegra-wm8903.o obj-$(CONFIG_SND_SOC_TEGRA_TRIMSLICE) += snd-soc-tegra-trimslice.o @@ -37,3 +38,4 @@ obj-$(CONFIG_SND_SOC_TEGRA_MAX98088) += snd-soc-tegra-max98088.o obj-$(CONFIG_SND_SOC_TEGRA_TLV320AIC326X) += snd-soc-tegra-aic326x.o obj-$(CONFIG_SND_SOC_TEGRA_RT5640) += snd-soc-tegra-rt5640.o obj-$(CONFIG_SND_SOC_TEGRA_MAX98095) += snd-soc-tegra-max98095.o +obj-$(CONFIG_SND_SOC_TEGRA_P1852) += snd-soc-tegra-p1852.o diff --git a/sound/soc/tegra/tegra_p1852.c b/sound/soc/tegra/tegra_p1852.c new file mode 100644 index 000000000000..27a1ea590340 --- /dev/null +++ b/sound/soc/tegra/tegra_p1852.c @@ -0,0 +1,272 @@ +/* + * tegra_p1852.c - Tegra machine ASoC driver for P1852 Boards. + * + * Author: Nitin Pai + * Copyright (C) 2010-2012 - NVIDIA, Inc. + * + * Based on code copyright/by: + * Copyright (c) 2009-2010, NVIDIA Corporation. + * Stephen Warren + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * 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 St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include + +#include +#include +#include +#include + +#include + +#include +#include +#include +#include + +#include "tegra_pcm.h" +#include "tegra_asoc_utils.h" + +#define DRV_NAME "tegra-snd-p1852" + +struct tegra_p1852 { + struct tegra_asoc_utils_data util_data; + struct tegra_p1852_platform_data *pdata; +}; + +static int tegra_p1852_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; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_codec *codec = rtd->codec; + struct snd_soc_card *card = codec->card; + struct tegra_p1852 *machine = snd_soc_card_get_drvdata(card); + int srate, mclk; + int i2s_daifmt = 0; + int err; + struct tegra_p1852_platform_data *pdata; + int codec_id = codec_dai->id; + + pdata = machine->pdata; + + srate = params_rate(params); + switch (srate) { + case 64000: + case 88200: + case 96000: + mclk = 128 * srate; + break; + default: + mclk = 256 * srate; + break; + } + + err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); + if (err < 0) { + if (!(machine->util_data.set_mclk % mclk)) + mclk = machine->util_data.set_mclk; + else { + dev_err(card->dev, "Can't configure clocks\n"); + return err; + } + } + + tegra_asoc_utils_lock_clk_rate(&machine->util_data, 1); + + if (pdata->codec_info[codec_id].master) + i2s_daifmt |= SND_SOC_DAIFMT_CBM_CFM; + else + i2s_daifmt |= SND_SOC_DAIFMT_CBS_CFS; + + switch (pdata->codec_info[codec_id].i2s_format) { + case format_tdm: + i2s_daifmt |= SND_SOC_DAIFMT_DSP_A; + break; + case format_i2s: + i2s_daifmt |= SND_SOC_DAIFMT_I2S; + break; + case format_rjm: + i2s_daifmt |= SND_SOC_DAIFMT_RIGHT_J; + break; + case format_ljm: + i2s_daifmt |= SND_SOC_DAIFMT_LEFT_J; + break; + default: + break; + } + + err = snd_soc_dai_set_fmt(codec_dai, i2s_daifmt); + if (err < 0) + dev_info(card->dev, "codec_dai fmt not set\n"); + + err = snd_soc_dai_set_fmt(cpu_dai, i2s_daifmt); + if (err < 0) { + dev_err(card->dev, "cpu_dai fmt not set\n"); + return err; + } + + err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, + SND_SOC_CLOCK_IN); + if (err < 0) + dev_info(card->dev, "codec_dai clock not set\n"); + + return 0; +} + +static int tegra_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct tegra_p1852 *machine = snd_soc_card_get_drvdata(rtd->card); + + tegra_asoc_utils_lock_clk_rate(&machine->util_data, 0); + + return 0; +} + +static struct snd_soc_ops tegra_p1852_ops = { + .hw_params = tegra_p1852_hw_params, + .hw_free = tegra_hw_free, +}; + +static struct snd_soc_dai_link tegra_p1852_dai_link[] = { + { + .name = "I2S-TDM-1", + .stream_name = "TEGRA PCM", + .platform_name = "tegra-pcm-audio", + .ops = &tegra_p1852_ops, + }, + { + .name = "I2S-TDM-2", + .stream_name = "TEGRA PCM", + .platform_name = "tegra-pcm-audio", + .ops = &tegra_p1852_ops, + } +}; + +static struct snd_soc_card snd_soc_tegra_p1852 = { + .name = "tegra-p1852", + .dai_link = tegra_p1852_dai_link, + .num_links = ARRAY_SIZE(tegra_p1852_dai_link), +}; + +static __devinit int tegra_p1852_driver_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card = &snd_soc_tegra_p1852; + struct tegra_p1852 *machine; + struct tegra_p1852_platform_data *pdata; + int ret; + int i; + + pdata = pdev->dev.platform_data; + if (!pdata) { + dev_err(&pdev->dev, "No platform data supplied\n"); + return -EINVAL; + } + + machine = kzalloc(sizeof(struct tegra_p1852), GFP_KERNEL); + if (!machine) { + dev_err(&pdev->dev, "Can't allocate tegra_p1852 struct\n"); + return -ENOMEM; + } + + machine->pdata = pdata; + + /* The codec driver and codec dai have to come from the system + * level board configuration file + * */ + for (i = 0; i < ARRAY_SIZE(tegra_p1852_dai_link); i++) { + tegra_p1852_dai_link[i].codec_name = + pdata->codec_info[i].codec_name; + tegra_p1852_dai_link[i].cpu_dai_name = + pdata->codec_info[i].cpu_dai_name; + tegra_p1852_dai_link[i].codec_dai_name = + pdata->codec_info[i].codec_dai_name; + tegra_p1852_dai_link[i].name = + pdata->codec_info[i].name; + } + + ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); + if (ret) + goto err_free_machine; + + card->dev = &pdev->dev; + platform_set_drvdata(pdev, card); + snd_soc_card_set_drvdata(card, machine); + + ret = snd_soc_register_card(card); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", + ret); + } + + if (!card->instantiated) { + ret = -ENODEV; + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", + ret); + goto err_unregister_card; + } + + return 0; + +err_unregister_card: + snd_soc_unregister_card(card); + tegra_asoc_utils_fini(&machine->util_data); +err_free_machine: + kfree(machine); + return ret; +} + +static int __devexit tegra_p1852_driver_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + struct tegra_p1852 *machine = snd_soc_card_get_drvdata(card); + + snd_soc_unregister_card(card); + tegra_asoc_utils_fini(&machine->util_data); + kfree(machine); + + return 0; +} + +static struct platform_driver tegra_p1852_driver = { + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + .pm = &snd_soc_pm_ops, + }, + .probe = tegra_p1852_driver_probe, + .remove = __devexit_p(tegra_p1852_driver_remove), +}; + +static int __init tegra_p1852_modinit(void) +{ + return platform_driver_register(&tegra_p1852_driver); +} +module_init(tegra_p1852_modinit); + +static void __exit tegra_p1852_modexit(void) +{ + platform_driver_unregister(&tegra_p1852_driver); +} +module_exit(tegra_p1852_modexit); + +MODULE_AUTHOR("Nitin Pai "); +MODULE_DESCRIPTION("Tegra+P1852 machine ASoC driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME); -- cgit v1.2.3