Messages in this thread | | | Date | Mon, 14 Mar 2022 11:39:11 +0100 | Subject | Re: [v3 10/19] ASoC: mediatek: mt8186: support tdm in platform driver | From | AngeloGioacchino Del Regno <> |
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Il 13/03/22 16:10, Jiaxin Yu ha scritto: > Add mt8186 tdm dai driver. > > Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com> > --- > sound/soc/mediatek/mt8186/mt8186-dai-tdm.c | 695 +++++++++++++++++++++ > 1 file changed, 695 insertions(+) > create mode 100644 sound/soc/mediatek/mt8186/mt8186-dai-tdm.c > > diff --git a/sound/soc/mediatek/mt8186/mt8186-dai-tdm.c b/sound/soc/mediatek/mt8186/mt8186-dai-tdm.c > new file mode 100644 > index 000000000000..52acc5f6e147 > --- /dev/null > +++ b/sound/soc/mediatek/mt8186/mt8186-dai-tdm.c > @@ -0,0 +1,695 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// > +// MediaTek ALSA SoC Audio DAI TDM Control > +// > +// Copyright (c) 2022 MediaTek Inc. > +// Author: Jiaxin Yu <jiaxin.yu@mediatek.com> > + > +#include <linux/regmap.h> > +#include <sound/pcm_params.h> > + > +#include "mt8186-afe-clk.h" > +#include "mt8186-afe-common.h" > +#include "mt8186-afe-gpio.h" > +#include "mt8186-interconnection.h" > + > +#define TDM_HD_EN_W_NAME "TDM_HD_EN" > +#define TDM_MCLK_EN_W_NAME "TDM_MCLK_EN" > +#define MTK_AFE_TDM_KCONTROL_NAME "TDM_HD_Mux" > + > +struct mtk_afe_tdm_priv { > + unsigned int id; > + unsigned int rate; /* for determine which apll to use */ > + unsigned int bck_invert; > + unsigned int lck_invert; > + unsigned int lrck_width; > + unsigned int mclk_id; > + unsigned int mclk_multiple; /* according to sample rate */ > + unsigned int mclk_rate; > + unsigned int mclk_apll; > + unsigned int tdm_mode; > + unsigned int data_mode; > + unsigned int slave_mode; > + unsigned int low_jitter_en; > +}; > + > +enum { > + TDM_IN_I2S = 0, > + TDM_IN_LJ = 1, > + TDM_IN_RJ = 2, > + TDM_IN_DSP_A = 4, > + TDM_IN_DSP_B = 5, > +}; > + > +enum { > + TDM_DATA_ONE_PIN = 0, > + TDM_DATA_MULTI_PIN, > +}; > + > +enum { > + TDM_BCK_NON_INV = 0, > + TDM_BCK_INV = 1, > +}; > + > +enum { > + TDM_LCK_NON_INV = 0, > + TDM_LCK_INV = 1, > +}; > + > +static unsigned int get_tdm_lrck_width(snd_pcm_format_t format, > + unsigned int mode) > +{ > + if (mode == TDM_IN_DSP_A || mode == TDM_IN_DSP_B) > + return 0; > + > + return snd_pcm_format_physical_width(format) - 1; > +} > + > +static unsigned int get_tdm_ch_fixup(unsigned int channels) > +{ > + if (channels > 4) > + return 8; > + else if (channels > 2) > + return 4; > + > + return 2; > +} > + > +static unsigned int get_tdm_ch_per_sdata(unsigned int mode, > + unsigned int channels) > +{ > + if (mode == TDM_IN_DSP_A || mode == TDM_IN_DSP_B) > + return get_tdm_ch_fixup(channels); > + > + return 2; > +} > + > +enum { > + SUPPLY_SEQ_APLL, > + SUPPLY_SEQ_TDM_MCK_EN, > + SUPPLY_SEQ_TDM_HD_EN, > + SUPPLY_SEQ_TDM_EN, > +}; > + > +static int get_tdm_id_by_name(const char *name) > +{ > + return MT8186_DAI_TDM_IN; > +} > + > +static int mtk_tdm_en_event(struct snd_soc_dapm_widget *w, > + struct snd_kcontrol *kcontrol, > + int event) > +{ > + struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm); > + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt); > + struct mt8186_afe_private *afe_priv = afe->platform_priv; > + int dai_id = get_tdm_id_by_name(w->name); > + struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id]; > + > + if (!tdm_priv) { > + dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__); > + return -EINVAL; > + } > + > + dev_dbg(cmpnt->dev, "%s(), name %s, event 0x%x\n", > + __func__, w->name, event); > + > + switch (event) { > + case SND_SOC_DAPM_PRE_PMU: > + mt8186_afe_gpio_request(afe->dev, true, tdm_priv->id, 0); > + break; > + case SND_SOC_DAPM_POST_PMD: > + mt8186_afe_gpio_request(afe->dev, false, tdm_priv->id, 0); > + break; > + default: > + break; > + } > + > + return 0; > +} > + > +static int mtk_tdm_mck_en_event(struct snd_soc_dapm_widget *w, > + struct snd_kcontrol *kcontrol, > + int event) > +{ > + struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm); > + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt); > + struct mt8186_afe_private *afe_priv = afe->platform_priv; > + int dai_id = get_tdm_id_by_name(w->name); > + struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id]; > + > + if (!tdm_priv) { > + dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__); > + return -EINVAL; > + } > + > + dev_dbg(cmpnt->dev, "%s(), name %s, event 0x%x, dai_id %d\n", > + __func__, w->name, event, dai_id); > + > + switch (event) { > + case SND_SOC_DAPM_PRE_PMU: > + mt8186_mck_enable(afe, tdm_priv->mclk_id, tdm_priv->mclk_rate); > + break; > + case SND_SOC_DAPM_POST_PMD: > + tdm_priv->mclk_rate = 0; > + mt8186_mck_disable(afe, tdm_priv->mclk_id); > + break; > + default: > + break; > + } > + > + return 0; > +} > + > +/* dai component */ > +/* tdm virtual mux to output widget */ > +static const char * const tdm_mux_map[] = { > + "Normal", "Dummy_Widget", > +}; > + > +static int tdm_mux_map_value[] = { > + 0, 1, > +}; > + > +static SOC_VALUE_ENUM_SINGLE_AUTODISABLE_DECL(tdm_mux_map_enum, > + SND_SOC_NOPM, > + 0, > + 1, > + tdm_mux_map, > + tdm_mux_map_value); > + > +static const struct snd_kcontrol_new tdm_in_mux_control = > + SOC_DAPM_ENUM("TDM In Select", tdm_mux_map_enum); > + > +static const struct snd_soc_dapm_widget mtk_dai_tdm_widgets[] = { > + SND_SOC_DAPM_CLOCK_SUPPLY("aud_tdm_clk"), > + > + SND_SOC_DAPM_SUPPLY_S("TDM_EN", SUPPLY_SEQ_TDM_EN, > + ETDM_IN1_CON0, ETDM_IN1_CON0_REG_ETDM_IN_EN_SFT, > + 0, mtk_tdm_en_event, > + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), > + /* tdm hd en */ > + SND_SOC_DAPM_SUPPLY_S(TDM_HD_EN_W_NAME, SUPPLY_SEQ_TDM_HD_EN, > + ETDM_IN1_CON2, ETDM_IN1_CON2_REG_CLOCK_SOURCE_SEL_SFT, > + 0, NULL, > + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), > + > + SND_SOC_DAPM_SUPPLY_S(TDM_MCLK_EN_W_NAME, SUPPLY_SEQ_TDM_MCK_EN, > + SND_SOC_NOPM, 0, 0, > + mtk_tdm_mck_en_event, > + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), > + > + SND_SOC_DAPM_INPUT("TDM_DUMMY_IN"), > + > + SND_SOC_DAPM_MUX("TDM_In_Mux", > + SND_SOC_NOPM, 0, 0, &tdm_in_mux_control), > +}; > + > +static int mtk_afe_tdm_mclk_connect(struct snd_soc_dapm_widget *source, > + struct snd_soc_dapm_widget *sink) > +{ > + struct snd_soc_dapm_widget *w = sink; > + struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm); > + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt); > + struct mt8186_afe_private *afe_priv = afe->platform_priv; > + int dai_id = get_tdm_id_by_name(w->name); > + struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id]; > + > + if (!tdm_priv) { > + dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__); > + return 0; > + } > + > + return (tdm_priv->mclk_rate > 0) ? 1 : 0; > +} > + > +static int mtk_afe_tdm_mclk_apll_connect(struct snd_soc_dapm_widget *source, > + struct snd_soc_dapm_widget *sink) > +{ > + struct snd_soc_dapm_widget *w = sink; > + struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm); > + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt); > + struct mt8186_afe_private *afe_priv = afe->platform_priv; > + int dai_id = get_tdm_id_by_name(w->name); > + struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id]; > + int cur_apll; > + > + /* which apll */ > + cur_apll = mt8186_get_apll_by_name(afe, source->name); > + > + return (tdm_priv->mclk_apll == cur_apll) ? 1 : 0; > +} > + > +static int mtk_afe_tdm_hd_connect(struct snd_soc_dapm_widget *source, > + struct snd_soc_dapm_widget *sink) > +{ > + struct snd_soc_dapm_widget *w = sink; > + struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm); > + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt); > + struct mt8186_afe_private *afe_priv = afe->platform_priv; > + int dai_id = get_tdm_id_by_name(w->name); > + struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id]; > + > + if (!tdm_priv) { > + dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__); > + return 0; > + } > + > + return tdm_priv->low_jitter_en; > +} > + > +static int mtk_afe_tdm_apll_connect(struct snd_soc_dapm_widget *source, > + struct snd_soc_dapm_widget *sink) > +{ > + struct snd_soc_dapm_widget *w = sink; > + struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm); > + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt); > + struct mt8186_afe_private *afe_priv = afe->platform_priv; > + int dai_id = get_tdm_id_by_name(w->name); > + struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id]; > + int cur_apll; > + int tdm_need_apll; > + > + if (!tdm_priv) { > + dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__); > + return 0; > + } > + > + /* which apll */ > + cur_apll = mt8186_get_apll_by_name(afe, source->name); > + > + /* choose APLL from tdm rate */ > + tdm_need_apll = mt8186_get_apll_by_rate(afe, tdm_priv->rate); > + > + return (tdm_need_apll == cur_apll) ? 1 : 0; > +} > + > +/* low jitter control */ > +static const char * const mt8186_tdm_hd_str[] = { > + "Normal", "Low_Jitter" > +}; > + > +static const struct soc_enum mt8186_tdm_enum[] = { > + SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(mt8186_tdm_hd_str), > + mt8186_tdm_hd_str), > +}; > + > +static int mt8186_tdm_hd_get(struct snd_kcontrol *kcontrol, > + struct snd_ctl_elem_value *ucontrol) > +{ > + struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol); > + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt); > + struct mt8186_afe_private *afe_priv = afe->platform_priv; > + int dai_id = get_tdm_id_by_name(kcontrol->id.name); > + struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id]; > + > + if (!tdm_priv) { > + dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__); > + return -EINVAL; > + } > + > + ucontrol->value.integer.value[0] = tdm_priv->low_jitter_en; > + > + return 0; > +} > + > +static int mt8186_tdm_hd_set(struct snd_kcontrol *kcontrol, > + struct snd_ctl_elem_value *ucontrol) > +{ > + struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol); > + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt); > + struct mt8186_afe_private *afe_priv = afe->platform_priv; > + int dai_id = get_tdm_id_by_name(kcontrol->id.name); > + struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id]; > + struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; > + int hd_en; > + > + if (ucontrol->value.enumerated.item[0] >= e->items) > + return -EINVAL; > + > + hd_en = ucontrol->value.integer.value[0]; > + > + dev_dbg(afe->dev, "%s(), kcontrol name %s, hd_en %d\n", > + __func__, kcontrol->id.name, hd_en); > + > + if (!tdm_priv) { > + dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__); > + return -EINVAL; > + } > + > + tdm_priv->low_jitter_en = hd_en; > + > + return 0; > +} > + > +static const struct snd_kcontrol_new mtk_dai_tdm_controls[] = { > + SOC_ENUM_EXT(MTK_AFE_TDM_KCONTROL_NAME, mt8186_tdm_enum[0], > + mt8186_tdm_hd_get, mt8186_tdm_hd_set), > +}; > + > +static const struct snd_soc_dapm_route mtk_dai_tdm_routes[] = { > + {"TDM IN", NULL, "aud_tdm_clk"}, > + {"TDM IN", NULL, "TDM_EN"}, > + {"TDM IN", NULL, TDM_HD_EN_W_NAME, mtk_afe_tdm_hd_connect}, > + {TDM_HD_EN_W_NAME, NULL, APLL1_W_NAME, mtk_afe_tdm_apll_connect}, > + {TDM_HD_EN_W_NAME, NULL, APLL2_W_NAME, mtk_afe_tdm_apll_connect}, > + > + {"TDM IN", NULL, TDM_MCLK_EN_W_NAME, mtk_afe_tdm_mclk_connect}, > + {TDM_MCLK_EN_W_NAME, NULL, APLL1_W_NAME, mtk_afe_tdm_mclk_apll_connect}, > + {TDM_MCLK_EN_W_NAME, NULL, APLL2_W_NAME, mtk_afe_tdm_mclk_apll_connect}, > + > + /* allow tdm on without codec on */ > + {"TDM IN", NULL, "TDM_In_Mux"}, > + {"TDM_In_Mux", "Dummy_Widget", "TDM_DUMMY_IN"}, > +}; > + > +/* dai ops */ > +static int mtk_dai_tdm_cal_mclk(struct mtk_base_afe *afe, > + struct mtk_afe_tdm_priv *tdm_priv, > + int freq) > +{ > + int apll; > + int apll_rate; > + > + apll = mt8186_get_apll_by_rate(afe, freq); > + apll_rate = mt8186_get_apll_rate(afe, apll); > + > + if (!freq || freq > apll_rate) { > + dev_err(afe->dev, > + "%s(), freq(%d Hz) invalid\n", __func__, freq); > + return -EINVAL; > + } > + > + if (apll_rate % freq != 0) { > + dev_err(afe->dev, > + "%s(), APLL cannot generate %d Hz", __func__, freq); > + return -EINVAL; > + } > + > + tdm_priv->mclk_rate = freq; > + tdm_priv->mclk_apll = apll; > + > + return 0; > +} > + > +static int mtk_dai_tdm_hw_params(struct snd_pcm_substream *substream, > + struct snd_pcm_hw_params *params, > + struct snd_soc_dai *dai) > +{ > + struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai); > + struct mt8186_afe_private *afe_priv = afe->platform_priv; > + int tdm_id = dai->id; > + struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[tdm_id]; > + unsigned int tdm_mode = tdm_priv->tdm_mode; > + unsigned int data_mode = tdm_priv->data_mode; > + unsigned int rate = params_rate(params); > + unsigned int channels = params_channels(params); > + snd_pcm_format_t format = params_format(params); > + unsigned int bit_width = > + snd_pcm_format_physical_width(format); > + unsigned int tdm_channels = (data_mode == TDM_DATA_ONE_PIN) ? > + get_tdm_ch_per_sdata(tdm_mode, channels) : 2; > + unsigned int lrck_width = > + get_tdm_lrck_width(format, tdm_mode); > + unsigned int tdm_con = 0; > + bool slave_mode = tdm_priv->slave_mode; > + bool lrck_inv = tdm_priv->lck_invert; > + bool bck_inv = tdm_priv->bck_invert; > + unsigned int tran_rate; > + unsigned int tran_relatch_rate; > + > + if (tdm_priv) > + tdm_priv->rate = rate; > + else { > + dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__); > + return -EINVAL; > + }
This can be simpler:
if (!tdm_priv) { dev_err .... return -EINVAL; }
tdm_priv->rate = rate;
...with that fixed:
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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