diff options
Diffstat (limited to 'sound/soc/ux500/ux500_ab5500.c')
| -rwxr-xr-x | sound/soc/ux500/ux500_ab5500.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/sound/soc/ux500/ux500_ab5500.c b/sound/soc/ux500/ux500_ab5500.c new file mode 100755 index 00000000000..3a1dab0a990 --- /dev/null +++ b/sound/soc/ux500/ux500_ab5500.c @@ -0,0 +1,132 @@ +/* + * Copyright (C) ST-Ericsson SA 2011 + * + * Author: Ola Lilja ola.o.lilja@stericsson.com, + * Roger Nilsson roger.xr.nilsson@stericsson.com + * for ST-Ericsson. + * + * License terms: + * + * 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. + */ + +#include <sound/soc.h> +#include <linux/clk.h> +#include "../codecs/ab5500.h" +#include "ux500_msp_dai.h" + +/* For a workwround purpose we enable sysclk + by default this will be changed later */ +static unsigned int sysclk_state = 1;/* Enabled */ +static struct clk *ux500_ab5500_sysclk; + +static int sysclk_input_select_control_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int sysclk_input_select_control_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = sysclk_state; + return 0; +} + +static int sysclk_input_select_control_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + sysclk_state = ucontrol->value.integer.value[0]; + return 0; +} + +static const struct snd_kcontrol_new sysclk_input_select_control = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Sysclk Input Select", + .index = 0, + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, + .info = sysclk_input_select_control_info, + .get = sysclk_input_select_control_get, + .put = sysclk_input_select_control_put +}; + +int ux500_ab5500_startup(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + int ret = 0; + + if (sysclk_state == 1) { + ret = clk_enable(ux500_ab5500_sysclk); + if (ret) + dev_err(codec->dev, "failed to enable clock %d\n", ret); + } + + return ret; +} + +void ux500_ab5500_shutdown(struct snd_pcm_substream *substream) +{ + pr_info("%s: Enter.\n", __func__); + if (sysclk_state == 1) + clk_disable(ux500_ab5500_sysclk); +} + +int ux500_ab5500_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; + int ret = 0; + + int channels = params_channels(params); + + printk(KERN_DEBUG "%s: Enter.\n", __func__); + printk(KERN_DEBUG "%s: substream->pcm->name = %s.\n", __func__, substream->pcm->name); + printk(KERN_DEBUG "%s: substream->pcm->id = %s.\n", __func__, substream->pcm->id); + printk(KERN_DEBUG "%s: substream->name = %s.\n", __func__, substream->name); + printk(KERN_DEBUG "%s: substream->number = %d.\n", __func__, substream->number); + printk(KERN_DEBUG "%s: channels = %d.\n", __func__, channels); + printk(KERN_DEBUG "%s: DAI-index (Codec): %d\n", __func__, codec_dai->id); + printk(KERN_DEBUG "%s: DAI-index (Platform): %d\n", __func__, cpu_dai->id); + + ret = snd_soc_dai_set_fmt(codec_dai, + SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM); + if (ret < 0) + return ret; + + ret = snd_soc_dai_set_fmt(cpu_dai, + SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_CBM_CFM | + SND_SOC_DAIFMT_NB_NF); + if (ret < 0) + return ret; + ux500_msp_dai_set_data_delay(cpu_dai, MSP_DELAY_1); + + return ret; +} + +int ux500_ab5500_machine_codec_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_codec *codec = rtd->codec; + int ret = 0; + + snd_ctl_add(codec->card->snd_card, + snd_ctl_new1(&sysclk_input_select_control, codec)); + + ux500_ab5500_sysclk = clk_get(codec->dev, "sysclk"); + if (IS_ERR(ux500_ab5500_sysclk)) { + dev_err(codec->dev, "could not get sysclk %ld\n", + PTR_ERR(ux500_ab5500_sysclk)); + ret = PTR_ERR(ux500_ab5500_sysclk); + } + + return ret; +} |