diff options
Diffstat (limited to 'sound/soc/imx/imx-si4763.c')
| -rw-r--r-- | sound/soc/imx/imx-si4763.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/sound/soc/imx/imx-si4763.c b/sound/soc/imx/imx-si4763.c new file mode 100644 index 00000000..7b2458ed --- /dev/null +++ b/sound/soc/imx/imx-si4763.c @@ -0,0 +1,198 @@ +/* + * Copyright (C) 2008-2013 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/device.h> +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/fsl_devices.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include <sound/soc-dai.h> +#include <sound/soc-dapm.h> +#include <sound/initval.h> +#include <mach/audmux.h> +#include <mach/ssi.h> + +#include "imx-ssi.h" + +static struct imx_si4763_priv { + int sysclk; + int hw; + int active; + struct platform_device *pdev; +} card_priv; + +static int imx_audmux_config(int slave, int master) +{ + unsigned int ptcr, pdcr; + slave = slave - 1; + master = master - 1; + + ptcr = MXC_AUDMUX_V2_PTCR_SYN | + MXC_AUDMUX_V2_PTCR_TFSDIR | + MXC_AUDMUX_V2_PTCR_TFSEL(slave) | + MXC_AUDMUX_V2_PTCR_TCLKDIR | + MXC_AUDMUX_V2_PTCR_TCSEL(slave); + pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(slave); + mxc_audmux_v2_configure_port(master, ptcr, pdcr); + + ptcr = MXC_AUDMUX_V2_PTCR_SYN; + pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(master); + mxc_audmux_v2_configure_port(slave, ptcr, pdcr); + + return 0; +} + + +static int imx_3stack_si4763_startup(struct snd_pcm_substream *substream) +{ + struct imx_si4763_priv *priv = &card_priv; + + priv->active++; + return 0; +} + +static int imx_3stack_si4763_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; + unsigned int channels = params_channels(params); + struct imx_ssi *ssi_mode = snd_soc_dai_get_drvdata(cpu_dai); + int ret = 0; + u32 dai_format; + dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS; + + ssi_mode->flags |= IMX_SSI_SYN; + + /* set i.MX active slot mask */ + snd_soc_dai_set_tdm_slot(cpu_dai, + channels == 1 ? 0xfffffffe : 0xfffffffc, + channels == 1 ? 0xfffffffe : 0xfffffffc, + 2, 32); + + /* set cpu DAI configuration */ + ret = snd_soc_dai_set_fmt(cpu_dai, dai_format); + if (ret < 0) + return ret; + + /* set the SSI system clock as input (unused) */ + snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, SND_SOC_CLOCK_IN); + + snd_soc_dai_set_clkdiv(cpu_dai, IMX_SSI_TX_DIV_PM, 4); + snd_soc_dai_set_clkdiv(cpu_dai, IMX_SSI_TX_DIV_2, 1); + snd_soc_dai_set_clkdiv(cpu_dai, IMX_SSI_TX_DIV_PSR, 0); + return 0; +} + +static void imx_3stack_si4763_shutdown(struct snd_pcm_substream *substream) +{ + struct imx_si4763_priv *priv = &card_priv; + priv->active--; +} + +/* + * imx_3stack bt DAI opserations. + */ +static struct snd_soc_ops imx_3stack_si4763_ops = { + .startup = imx_3stack_si4763_startup, + .hw_params = imx_3stack_si4763_hw_params, + .shutdown = imx_3stack_si4763_shutdown, +}; + +static struct snd_soc_dai_link imx_3stack_dai = { + .name = "imx-si4763", + .stream_name = "imx-si4763", + .codec_dai_name = "si4763", + .codec_name = "si4763.0", + .cpu_dai_name = "imx-ssi.1", + .platform_name = "imx-pcm-audio.1", + .ops = &imx_3stack_si4763_ops, +}; + +static struct snd_soc_card snd_soc_card_imx_3stack = { + .name = "imx-audio-si4763", + .dai_link = &imx_3stack_dai, + .num_links = 1, +}; + +static int __devinit imx_3stack_si4763_probe(struct platform_device *pdev) +{ + struct mxc_audio_platform_data *plat = pdev->dev.platform_data; + + card_priv.pdev = pdev; + card_priv.sysclk = plat->sysclk; + imx_audmux_config(plat->src_port, plat->ext_port); + + return 0; + +} + +static int __devexit imx_3stack_si4763_remove(struct platform_device *pdev) +{ + return 0; +} + +static struct platform_driver imx_3stack_si4763_driver = { + .probe = imx_3stack_si4763_probe, + .remove = __devexit_p(imx_3stack_si4763_remove), + .driver = { + .name = "imx-tuner-si4763", + .owner = THIS_MODULE, + }, +}; + +static struct platform_device *imx_3stack_snd_device; + +static int __init imx_3stack_asoc_init(void) +{ + int ret; + ret = platform_driver_register(&imx_3stack_si4763_driver); + if (ret < 0) + goto exit; + + imx_3stack_snd_device = platform_device_alloc("soc-audio", 6); + if (!imx_3stack_snd_device) + goto err_device_alloc; + + platform_set_drvdata(imx_3stack_snd_device, &snd_soc_card_imx_3stack); + ret = platform_device_add(imx_3stack_snd_device); + if (0 == ret) + goto exit; + + + platform_device_put(imx_3stack_snd_device); +err_device_alloc: + platform_driver_unregister(&imx_3stack_si4763_driver); +exit: + return ret; +} + +static void __exit imx_3stack_asoc_exit(void) +{ + platform_driver_unregister(&imx_3stack_si4763_driver); + platform_device_unregister(imx_3stack_snd_device); +} + +module_init(imx_3stack_asoc_init); +module_exit(imx_3stack_asoc_exit); + +/* Module information */ +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("ALSA SoC si4763 imx"); +MODULE_LICENSE("GPL"); |