diff options
Diffstat (limited to 'sound/soc/mediatek/mtk-afe-pcm.c')
| -rw-r--r-- | sound/soc/mediatek/mtk-afe-pcm.c | 106 |
1 files changed, 94 insertions, 12 deletions
diff --git a/sound/soc/mediatek/mtk-afe-pcm.c b/sound/soc/mediatek/mtk-afe-pcm.c index 9863da73d..f5baf3c38 100644 --- a/sound/soc/mediatek/mtk-afe-pcm.c +++ b/sound/soc/mediatek/mtk-afe-pcm.c @@ -45,18 +45,21 @@ /* Memory interface */ #define AFE_DL1_BASE 0x0040 #define AFE_DL1_CUR 0x0044 +#define AFE_DL1_END 0x0048 #define AFE_DL2_BASE 0x0050 #define AFE_DL2_CUR 0x0054 #define AFE_AWB_BASE 0x0070 #define AFE_AWB_CUR 0x007c #define AFE_VUL_BASE 0x0080 #define AFE_VUL_CUR 0x008c +#define AFE_VUL_END 0x0088 #define AFE_DAI_BASE 0x0090 #define AFE_DAI_CUR 0x009c #define AFE_MOD_PCM_BASE 0x0330 #define AFE_MOD_PCM_CUR 0x033c #define AFE_HDMI_OUT_BASE 0x0374 #define AFE_HDMI_OUT_CUR 0x0378 +#define AFE_HDMI_OUT_END 0x037c #define AFE_ADDA2_TOP_CON0 0x0600 @@ -127,6 +130,34 @@ enum afe_tdm_ch_start { AFE_TDM_CH_ZERO, }; +static const unsigned int mtk_afe_backup_list[] = { + AUDIO_TOP_CON0, + AFE_CONN1, + AFE_CONN2, + AFE_CONN7, + AFE_CONN8, + AFE_DAC_CON1, + AFE_DL1_BASE, + AFE_DL1_END, + AFE_VUL_BASE, + AFE_VUL_END, + AFE_HDMI_OUT_BASE, + AFE_HDMI_OUT_END, + AFE_HDMI_CONN0, + AFE_DAC_CON0, +}; + +struct mtk_afe { + /* address for ioremap audio hardware register */ + void __iomem *base_addr; + struct device *dev; + struct regmap *regmap; + struct mtk_afe_memif memif[MTK_AFE_MEMIF_NUM]; + struct clk *clocks[MTK_CLK_NUM]; + unsigned int backup_regs[ARRAY_SIZE(mtk_afe_backup_list)]; + bool suspended; +}; + static const struct snd_pcm_hardware mtk_afe_hardware = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP_VALID), @@ -518,6 +549,23 @@ static int mtk_afe_dais_startup(struct snd_pcm_substream *substream, memif->substream = substream; snd_soc_set_runtime_hwparams(substream, &mtk_afe_hardware); + + /* + * Capture cannot use ping-pong buffer since hw_ptr at IRQ may be + * smaller than period_size due to AFE's internal buffer. + * This easily leads to overrun when avail_min is period_size. + * One more period can hold the possible unread buffer. + */ + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + ret = snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_PERIODS, + 3, + mtk_afe_hardware.periods_max); + if (ret < 0) { + dev_err(afe->dev, "hw_constraint_minmax failed\n"); + return ret; + } + } ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); if (ret < 0) @@ -722,11 +770,53 @@ static const struct snd_soc_dai_ops mtk_afe_hdmi_ops = { }; +static int mtk_afe_runtime_suspend(struct device *dev); +static int mtk_afe_runtime_resume(struct device *dev); + +static int mtk_afe_dai_suspend(struct snd_soc_dai *dai) +{ + struct mtk_afe *afe = snd_soc_dai_get_drvdata(dai); + int i; + + dev_dbg(afe->dev, "%s\n", __func__); + if (pm_runtime_status_suspended(afe->dev) || afe->suspended) + return 0; + + for (i = 0; i < ARRAY_SIZE(mtk_afe_backup_list); i++) + regmap_read(afe->regmap, mtk_afe_backup_list[i], + &afe->backup_regs[i]); + + afe->suspended = true; + mtk_afe_runtime_suspend(afe->dev); + return 0; +} + +static int mtk_afe_dai_resume(struct snd_soc_dai *dai) +{ + struct mtk_afe *afe = snd_soc_dai_get_drvdata(dai); + int i = 0; + + dev_dbg(afe->dev, "%s\n", __func__); + if (pm_runtime_status_suspended(afe->dev) || !afe->suspended) + return 0; + + mtk_afe_runtime_resume(afe->dev); + + for (i = 0; i < ARRAY_SIZE(mtk_afe_backup_list); i++) + regmap_write(afe->regmap, mtk_afe_backup_list[i], + afe->backup_regs[i]); + + afe->suspended = false; + return 0; +} + static struct snd_soc_dai_driver mtk_afe_pcm_dais[] = { /* FE DAIs: memory intefaces to CPU */ { .name = "DL1", /* downlink 1 */ .id = MTK_AFE_MEMIF_DL1, + .suspend = mtk_afe_dai_suspend, + .resume = mtk_afe_dai_resume, .playback = { .stream_name = "DL1", .channels_min = 1, @@ -738,6 +828,8 @@ static struct snd_soc_dai_driver mtk_afe_pcm_dais[] = { }, { .name = "VUL", /* voice uplink */ .id = MTK_AFE_MEMIF_VUL, + .suspend = mtk_afe_dai_suspend, + .resume = mtk_afe_dai_resume, .capture = { .stream_name = "VUL", .channels_min = 1, @@ -774,6 +866,8 @@ static struct snd_soc_dai_driver mtk_afe_hdmi_dais[] = { { .name = "HDMI", .id = MTK_AFE_MEMIF_HDMI, + .suspend = mtk_afe_dai_suspend, + .resume = mtk_afe_dai_resume, .playback = { .stream_name = "HDMI", .channels_min = 2, @@ -820,10 +914,6 @@ static const struct snd_kcontrol_new mtk_afe_o10_mix[] = { }; static const struct snd_soc_dapm_widget mtk_afe_pcm_widgets[] = { - /* Backend DAIs */ - SND_SOC_DAPM_AIF_IN("I2S Capture", NULL, 0, SND_SOC_NOPM, 0, 0), - SND_SOC_DAPM_AIF_OUT("I2S Playback", NULL, 0, SND_SOC_NOPM, 0, 0), - /* inter-connections */ SND_SOC_DAPM_MIXER("I05", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_MIXER("I06", SND_SOC_NOPM, 0, 0, NULL, 0), @@ -855,11 +945,6 @@ static const struct snd_soc_dapm_route mtk_afe_pcm_routes[] = { { "O10", "I18 Switch", "I18" }, }; -static const struct snd_soc_dapm_widget mtk_afe_hdmi_widgets[] = { - /* Backend DAIs */ - SND_SOC_DAPM_AIF_OUT("HDMIO Playback", NULL, 0, SND_SOC_NOPM, 0, 0), -}; - static const struct snd_soc_dapm_route mtk_afe_hdmi_routes[] = { {"HDMIO Playback", NULL, "HDMI"}, }; @@ -874,8 +959,6 @@ static const struct snd_soc_component_driver mtk_afe_pcm_dai_component = { static const struct snd_soc_component_driver mtk_afe_hdmi_dai_component = { .name = "mtk-afe-hdmi-dai", - .dapm_widgets = mtk_afe_hdmi_widgets, - .num_dapm_widgets = ARRAY_SIZE(mtk_afe_hdmi_widgets), .dapm_routes = mtk_afe_hdmi_routes, .num_dapm_routes = ARRAY_SIZE(mtk_afe_hdmi_routes), }; @@ -1220,7 +1303,6 @@ static const struct dev_pm_ops mtk_afe_pm_ops = { static struct platform_driver mtk_afe_pcm_driver = { .driver = { .name = "mtk-afe-pcm", - .owner = THIS_MODULE, .of_match_table = mtk_afe_pcm_dt_match, .pm = &mtk_afe_pm_ops, }, |