[PATCH 3/7] ASoC: mediatek: mt79xx: add platform driver

From: Maso Huang maso.huang@mediatek.com

Add mt79xx platform driver.

Signed-off-by: Maso Huang maso.huang@mediatek.com --- sound/soc/mediatek/Kconfig | 10 + sound/soc/mediatek/Makefile | 1 + sound/soc/mediatek/mt79xx/Makefile | 9 + sound/soc/mediatek/mt79xx/mt79xx-afe-pcm.c | 608 +++++++++++++++++++++ 4 files changed, 628 insertions(+) create mode 100644 sound/soc/mediatek/mt79xx/Makefile create mode 100644 sound/soc/mediatek/mt79xx/mt79xx-afe-pcm.c

diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig index 4baac72677d9..192546078d5e 100644 --- a/sound/soc/mediatek/Kconfig +++ b/sound/soc/mediatek/Kconfig @@ -54,6 +54,16 @@ config SND_SOC_MT6797_MT6351 Select Y if you have such device. If unsure select "N".

+config SND_SOC_MT79XX + tristate "ASoC support for Mediatek MT79XX chip" + depends on ARCH_MEDIATEK + select SND_SOC_MEDIATEK + help + This adds ASoC platform driver support for MediaTek MT79XX chip + that can be used with other codecs. + Select Y if you have such device. + If unsure select "N". + config SND_SOC_MT8173 tristate "ASoC support for Mediatek MT8173 chip" depends on ARCH_MEDIATEK diff --git a/sound/soc/mediatek/Makefile b/sound/soc/mediatek/Makefile index 3de38cfc69e5..b2e530629887 100644 --- a/sound/soc/mediatek/Makefile +++ b/sound/soc/mediatek/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_SND_SOC_MEDIATEK) += common/ obj-$(CONFIG_SND_SOC_MT2701) += mt2701/ obj-$(CONFIG_SND_SOC_MT6797) += mt6797/ +obj-$(CONFIG_SND_SOC_MT79XX) += mt79xx/ obj-$(CONFIG_SND_SOC_MT8173) += mt8173/ obj-$(CONFIG_SND_SOC_MT8183) += mt8183/ obj-$(CONFIG_SND_SOC_MT8186) += mt8186/ diff --git a/sound/soc/mediatek/mt79xx/Makefile b/sound/soc/mediatek/mt79xx/Makefile new file mode 100644 index 000000000000..984b20ae8819 --- /dev/null +++ b/sound/soc/mediatek/mt79xx/Makefile @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0 + +# platform driver +snd-soc-mt79xx-afe-objs := \ + mt79xx-afe-pcm.o \ + mt79xx-afe-clk.o \ + mt79xx-dai-etdm.o + +obj-$(CONFIG_SND_SOC_MT79XX) += snd-soc-mt79xx-afe.o diff --git a/sound/soc/mediatek/mt79xx/mt79xx-afe-pcm.c b/sound/soc/mediatek/mt79xx/mt79xx-afe-pcm.c new file mode 100644 index 000000000000..69c5f3f3f84b --- /dev/null +++ b/sound/soc/mediatek/mt79xx/mt79xx-afe-pcm.c @@ -0,0 +1,608 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * MediaTek ALSA SoC AFE platform driver for MT79xx + * + * Copyright (c) 2021 MediaTek Inc. + * Author: Vic Wu vic.wu@mediatek.com + * Maso Huang maso.huang@mediatek.com + */ + +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/pm_runtime.h> + +#include "mt79xx-afe-common.h" +#include "mt79xx-afe-clk.h" +#include "mt79xx-reg.h" +#include "../common/mtk-afe-platform-driver.h" +#include "../common/mtk-afe-fe-dai.h" + +enum { + MTK_AFE_RATE_8K = 0, + MTK_AFE_RATE_11K = 1, + MTK_AFE_RATE_12K = 2, + MTK_AFE_RATE_16K = 4, + MTK_AFE_RATE_22K = 5, + MTK_AFE_RATE_24K = 6, + MTK_AFE_RATE_32K = 8, + MTK_AFE_RATE_44K = 9, + MTK_AFE_RATE_48K = 10, + MTK_AFE_RATE_88K = 13, + MTK_AFE_RATE_96K = 14, + MTK_AFE_RATE_176K = 17, + MTK_AFE_RATE_192K = 18, +}; + +unsigned int mt79xx_afe_rate_transform(struct device *dev, + unsigned int rate) +{ + switch (rate) { + case 8000: + return MTK_AFE_RATE_8K; + case 11025: + return MTK_AFE_RATE_11K; + case 12000: + return MTK_AFE_RATE_12K; + case 16000: + return MTK_AFE_RATE_16K; + case 22050: + return MTK_AFE_RATE_22K; + case 24000: + return MTK_AFE_RATE_24K; + case 32000: + return MTK_AFE_RATE_32K; + case 44100: + return MTK_AFE_RATE_44K; + case 48000: + return MTK_AFE_RATE_48K; + case 88200: + return MTK_AFE_RATE_88K; + case 96000: + return MTK_AFE_RATE_96K; + case 176400: + return MTK_AFE_RATE_176K; + case 192000: + return MTK_AFE_RATE_192K; + default: + dev_warn(dev, "%s(), rate %u invalid, use %d!!!\n", + __func__, rate, MTK_AFE_RATE_48K); + return MTK_AFE_RATE_48K; + } +} + +static const struct snd_pcm_hardware mt79xx_afe_hardware = { + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID, + .formats = SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S24_LE | + SNDRV_PCM_FMTBIT_S32_LE, + .period_bytes_min = 256, + .period_bytes_max = 4 * 48 * 1024, + .periods_min = 2, + .periods_max = 256, + .buffer_bytes_max = 8 * 48 * 1024, + .fifo_size = 0, +}; + +static int mt79xx_memif_fs(struct snd_pcm_substream *substream, + unsigned int rate) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_component *component = + snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME); + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component); + + return mt79xx_afe_rate_transform(afe->dev, rate); +} + +static int mt79xx_irq_fs(struct snd_pcm_substream *substream, + unsigned int rate) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_component *component = + snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME); + struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component); + + return mt79xx_afe_rate_transform(afe->dev, rate); +} + +#define MTK_PCM_RATES (SNDRV_PCM_RATE_8000_48000 |\ + SNDRV_PCM_RATE_88200 |\ + SNDRV_PCM_RATE_96000 |\ + SNDRV_PCM_RATE_176400 |\ + SNDRV_PCM_RATE_192000) + +#define MTK_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ + SNDRV_PCM_FMTBIT_S24_LE |\ + SNDRV_PCM_FMTBIT_S32_LE) + +static struct snd_soc_dai_driver mt79xx_memif_dai_driver[] = { + /* FE DAIs: memory intefaces to CPU */ + { + .name = "DL1", + .id = MT79XX_MEMIF_DL1, + .playback = { + .stream_name = "DL1", + .channels_min = 1, + .channels_max = 2, + .rates = MTK_PCM_RATES, + .formats = MTK_PCM_FORMATS, + }, + .ops = &mtk_afe_fe_ops, + }, + { + .name = "UL1", + .id = MT79XX_MEMIF_VUL12, + .capture = { + .stream_name = "UL1", + .channels_min = 1, + .channels_max = 2, + .rates = MTK_PCM_RATES, + .formats = MTK_PCM_FORMATS, + }, + .ops = &mtk_afe_fe_ops, + }, +}; + +static const struct snd_kcontrol_new o018_mix[] = { + SOC_DAPM_SINGLE_AUTODISABLE("I150_Switch", AFE_CONN018_4, 22, 1, 0), +}; + +static const struct snd_kcontrol_new o019_mix[] = { + SOC_DAPM_SINGLE_AUTODISABLE("I151_Switch", AFE_CONN019_4, 23, 1, 0), +}; + +static const struct snd_soc_dapm_widget mt79xx_memif_widgets[] = { + /* DL */ + SND_SOC_DAPM_MIXER("I032", SND_SOC_NOPM, 0, 0, NULL, 0), + SND_SOC_DAPM_MIXER("I033", SND_SOC_NOPM, 0, 0, NULL, 0), + + /* UL */ + SND_SOC_DAPM_MIXER("O018", SND_SOC_NOPM, 0, 0, + o018_mix, ARRAY_SIZE(o018_mix)), + SND_SOC_DAPM_MIXER("O019", SND_SOC_NOPM, 0, 0, + o019_mix, ARRAY_SIZE(o019_mix)), +}; + +static const struct snd_soc_dapm_route mt79xx_memif_routes[] = { + {"I032", NULL, "DL1"}, + {"I033", NULL, "DL1"}, + {"UL1", NULL, "O018"}, + {"UL1", NULL, "O019"}, + {"O018", "I150_Switch", "I150"}, + {"O019", "I151_Switch", "I151"}, +}; + +static const struct snd_soc_component_driver mt79xx_afe_pcm_dai_component = { + .name = "mt79xx-afe-pcm-dai", +}; + +static const struct mtk_base_memif_data memif_data[MT79XX_MEMIF_NUM] = { + [MT79XX_MEMIF_DL1] = { + .name = "DL1", + .id = MT79XX_MEMIF_DL1, + .reg_ofs_base = AFE_DL0_BASE, + .reg_ofs_cur = AFE_DL0_CUR, + .reg_ofs_end = AFE_DL0_END, + .reg_ofs_base_msb = AFE_DL0_BASE_MSB, + .reg_ofs_cur_msb = AFE_DL0_CUR_MSB, + .reg_ofs_end_msb = AFE_DL0_END_MSB, + .fs_reg = AFE_DL0_CON0, + .fs_shift = DL0_MODE_SFT, + .fs_maskbit = DL0_MODE_MASK, + .mono_reg = AFE_DL0_CON0, + .mono_shift = DL0_MONO_SFT, + .enable_reg = AFE_DL0_CON0, + .enable_shift = DL0_ON_SFT, + .hd_reg = AFE_DL0_CON0, + .hd_shift = DL0_HD_MODE_SFT, + .hd_align_reg = AFE_DL0_CON0, + .hd_align_mshift = DL0_HALIGN_SFT, + .pbuf_reg = AFE_DL0_CON0, + .pbuf_shift = DL0_PBUF_SIZE_SFT, + .minlen_reg = AFE_DL0_CON0, + .minlen_shift = DL0_MINLEN_SFT, + }, + [MT79XX_MEMIF_VUL12] = { + .name = "VUL12", + .id = MT79XX_MEMIF_VUL12, + .reg_ofs_base = AFE_VUL0_BASE, + .reg_ofs_cur = AFE_VUL0_CUR, + .reg_ofs_end = AFE_VUL0_END, + .reg_ofs_base_msb = AFE_VUL0_BASE_MSB, + .reg_ofs_cur_msb = AFE_VUL0_CUR_MSB, + .reg_ofs_end_msb = AFE_VUL0_END_MSB, + .fs_reg = AFE_VUL0_CON0, + .fs_shift = VUL0_MODE_SFT, + .fs_maskbit = VUL0_MODE_MASK, + .mono_reg = AFE_VUL0_CON0, + .mono_shift = VUL0_MONO_SFT, + .enable_reg = AFE_VUL0_CON0, + .enable_shift = VUL0_ON_SFT, + .hd_reg = AFE_VUL0_CON0, + .hd_shift = VUL0_HD_MODE_SFT, + .hd_align_reg = AFE_VUL0_CON0, + .hd_align_mshift = VUL0_HALIGN_SFT, + }, +}; + +static const struct mtk_base_irq_data irq_data[MT79XX_IRQ_NUM] = { + [MT79XX_IRQ_0] = { + .id = MT79XX_IRQ_0, + .irq_cnt_reg = AFE_IRQ0_MCU_CFG1, + .irq_cnt_shift = AFE_IRQ_CNT_SHIFT, + .irq_cnt_maskbit = AFE_IRQ_CNT_MASK, + .irq_fs_reg = AFE_IRQ0_MCU_CFG0, + .irq_fs_shift = IRQ_MCU_MODE_SFT, + .irq_fs_maskbit = IRQ_MCU_MODE_MASK, + .irq_en_reg = AFE_IRQ0_MCU_CFG0, + .irq_en_shift = IRQ_MCU_ON_SFT, + .irq_clr_reg = AFE_IRQ_MCU_CLR, + .irq_clr_shift = IRQ0_MCU_CLR_SFT, + }, + [MT79XX_IRQ_1] = { + .id = MT79XX_IRQ_1, + .irq_cnt_reg = AFE_IRQ1_MCU_CFG1, + .irq_cnt_shift = AFE_IRQ_CNT_SHIFT, + .irq_cnt_maskbit = AFE_IRQ_CNT_MASK, + .irq_fs_reg = AFE_IRQ1_MCU_CFG0, + .irq_fs_shift = IRQ_MCU_MODE_SFT, + .irq_fs_maskbit = IRQ_MCU_MODE_MASK, + .irq_en_reg = AFE_IRQ1_MCU_CFG0, + .irq_en_shift = IRQ_MCU_ON_SFT, + .irq_clr_reg = AFE_IRQ_MCU_CLR, + .irq_clr_shift = IRQ1_MCU_CLR_SFT, + }, + [MT79XX_IRQ_2] = { + .id = MT79XX_IRQ_2, + .irq_cnt_reg = AFE_IRQ2_MCU_CFG1, + .irq_cnt_shift = AFE_IRQ_CNT_SHIFT, + .irq_cnt_maskbit = AFE_IRQ_CNT_MASK, + .irq_fs_reg = AFE_IRQ2_MCU_CFG0, + .irq_fs_shift = IRQ_MCU_MODE_SFT, + .irq_fs_maskbit = IRQ_MCU_MODE_MASK, + .irq_en_reg = AFE_IRQ2_MCU_CFG0, + .irq_en_shift = IRQ_MCU_ON_SFT, + .irq_clr_reg = AFE_IRQ_MCU_CLR, + .irq_clr_shift = IRQ2_MCU_CLR_SFT, + }, +}; + +static bool mt79xx_is_volatile_reg(struct device *dev, unsigned int reg) +{ + /* these auto-gen reg has read-only bit, so put it as volatile */ + /* volatile reg cannot be cached, so cannot be set when power off */ + switch (reg) { + case AFE_DL0_CUR_MSB: + case AFE_DL0_CUR: + case AFE_DL0_RCH_MON: + case AFE_DL0_LCH_MON: + case AFE_VUL0_CUR_MSB: + case AFE_VUL0_CUR: + case AFE_IRQ_MCU_STATUS: + case AFE_MEMIF_RD_MON: + case AFE_MEMIF_WR_MON: + return true; + default: + return false; + }; +} + +static const struct regmap_config mt79xx_afe_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .volatile_reg = mt79xx_is_volatile_reg, + .max_register = AFE_MAX_REGISTER, + .num_reg_defaults_raw = ((AFE_MAX_REGISTER / 4) + 1), +}; + +static irqreturn_t mt79xx_afe_irq_handler(int irq_id, void *dev) +{ + struct mtk_base_afe *afe = dev; + struct mtk_base_afe_irq *irq; + unsigned int status; + unsigned int status_mcu; + unsigned int mcu_en; + int ret; + int i; + irqreturn_t irq_ret = IRQ_HANDLED; + + /* get irq that is sent to MCU */ + regmap_read(afe->regmap, AFE_IRQ_MCU_EN, &mcu_en); + + ret = regmap_read(afe->regmap, AFE_IRQ_MCU_STATUS, &status); + /* only care IRQ which is sent to MCU */ + status_mcu = status & mcu_en & AFE_IRQ_STATUS_BITS; + + if (ret || status_mcu == 0) { + dev_err(afe->dev, "%s(), irq status err, ret %d, status 0x%x, + mcu_en 0x%x\n", __func__, ret, status, mcu_en); + + irq_ret = IRQ_NONE; + goto err_irq; + } + + for (i = 0; i < MT79XX_MEMIF_NUM; i++) { + struct mtk_base_afe_memif *memif = &afe->memif[i]; + + if (!memif->substream) + continue; + + if (memif->irq_usage < 0) + continue; + + irq = &afe->irqs[memif->irq_usage]; + + if (status_mcu & (1 << irq->irq_data->irq_en_shift)) + snd_pcm_period_elapsed(memif->substream); + } + +err_irq: + /* clear irq */ + regmap_write(afe->regmap, AFE_IRQ_MCU_CLR, status_mcu); + + return irq_ret; +} + +static int mt79xx_afe_runtime_suspend(struct device *dev) +{ + struct mtk_base_afe *afe = dev_get_drvdata(dev); + struct mt79xx_afe_private *afe_priv = afe->platform_priv; + + if (!afe->regmap || afe_priv->pm_runtime_bypass_reg_ctl) + goto skip_regmap; + + /* disable clk*/ + regmap_update_bits(afe->regmap, AUDIO_TOP_CON4, 0x3fff, 0x3fff); + regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_APLL2_EN_MASK, + 0); + regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_26M_EN_MASK, + 0); + + /* make sure all irq status are cleared, twice intended */ + regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CLR, 0xffff, 0xffff); + +skip_regmap: + return mt79xx_afe_disable_clock(afe); +} + +static int mt79xx_afe_runtime_resume(struct device *dev) +{ + struct mtk_base_afe *afe = dev_get_drvdata(dev); + struct mt79xx_afe_private *afe_priv = afe->platform_priv; + int ret; + + ret = mt79xx_afe_enable_clock(afe); + if (ret) + return ret; + + if (!afe->regmap || afe_priv->pm_runtime_bypass_reg_ctl) + goto skip_regmap; + + /* enable clk*/ + regmap_update_bits(afe->regmap, AUDIO_TOP_CON4, 0x3fff, 0); + regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_APLL2_EN_MASK, + AUD_APLL2_EN); + regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_26M_EN_MASK, + AUD_26M_EN); + +skip_regmap: + return 0; +} + +static int mt79xx_afe_component_probe(struct snd_soc_component *component) +{ + return mtk_afe_add_sub_dai_control(component); +} + +static const struct snd_soc_component_driver mt79xx_afe_component = { + .name = AFE_PCM_NAME, + .probe = mt79xx_afe_component_probe, + .pointer = mtk_afe_pcm_pointer, + .pcm_construct = mtk_afe_pcm_new, +}; + +static int mt79xx_dai_memif_register(struct mtk_base_afe *afe) +{ + struct mtk_base_afe_dai *dai; + + dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL); + if (!dai) + return -ENOMEM; + + list_add(&dai->list, &afe->sub_dais); + + dai->dai_drivers = mt79xx_memif_dai_driver; + dai->num_dai_drivers = ARRAY_SIZE(mt79xx_memif_dai_driver); + + dai->dapm_widgets = mt79xx_memif_widgets; + dai->num_dapm_widgets = ARRAY_SIZE(mt79xx_memif_widgets); + dai->dapm_routes = mt79xx_memif_routes; + dai->num_dapm_routes = ARRAY_SIZE(mt79xx_memif_routes); + + return 0; +} + +typedef int (*dai_register_cb)(struct mtk_base_afe *); +static const dai_register_cb dai_register_cbs[] = { + mt79xx_dai_etdm_register, + mt79xx_dai_memif_register, +}; + +static int mt79xx_afe_pcm_dev_probe(struct platform_device *pdev) +{ + struct mtk_base_afe *afe; + struct mt79xx_afe_private *afe_priv; + struct device *dev; + int i, irq_id, ret; + + afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL); + if (!afe) + return -ENOMEM; + platform_set_drvdata(pdev, afe); + + afe->platform_priv = devm_kzalloc(&pdev->dev, sizeof(*afe_priv), + GFP_KERNEL); + if (!afe->platform_priv) + return -ENOMEM; + + afe_priv = afe->platform_priv; + afe->dev = &pdev->dev; + dev = afe->dev; + + afe->base_addr = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(afe->base_addr)) + return PTR_ERR(afe->base_addr); + + /* initial audio related clock */ + ret = mt79xx_init_clock(afe); + if (ret) { + dev_err(dev, "init clock error\n"); + return ret; + } + + pm_runtime_enable(dev); + + /* enable clock for regcache get default value from hw */ + afe_priv->pm_runtime_bypass_reg_ctl = true; + pm_runtime_get_sync(&pdev->dev); + + afe->regmap = devm_regmap_init_mmio(&pdev->dev, afe->base_addr, + &mt79xx_afe_regmap_config); + if (IS_ERR(afe->regmap)) { + ret = PTR_ERR(afe->regmap); + goto err_pm_disable; + } + + pm_runtime_put_sync(&pdev->dev); + afe_priv->pm_runtime_bypass_reg_ctl = false; + + /* init memif */ + afe->memif_size = MT79XX_MEMIF_NUM; + afe->memif = devm_kcalloc(dev, afe->memif_size, sizeof(*afe->memif), + GFP_KERNEL); + if (!afe->memif) + goto err_pm_disable; + + for (i = 0; i < afe->memif_size; i++) { + afe->memif[i].data = &memif_data[i]; + afe->memif[i].irq_usage = -1; + } + + mutex_init(&afe->irq_alloc_lock); + + /* irq initialize */ + afe->irqs_size = MT79XX_IRQ_NUM; + afe->irqs = devm_kcalloc(dev, afe->irqs_size, sizeof(*afe->irqs), + GFP_KERNEL); + if (!afe->irqs) + goto err_pm_disable; + + for (i = 0; i < afe->irqs_size; i++) + afe->irqs[i].irq_data = &irq_data[i]; + + /* request irq */ + irq_id = platform_get_irq(pdev, 0); + if (!irq_id) { + dev_err(dev, "%pOFn no irq found\n", dev->of_node); + goto err_pm_disable; + } + ret = devm_request_irq(dev, irq_id, mt79xx_afe_irq_handler, + IRQF_TRIGGER_NONE, "asys-isr", (void *)afe); + if (ret) { + dev_err(dev, "could not request_irq for asys-isr\n"); + goto err_pm_disable; + } + + /* init sub_dais */ + INIT_LIST_HEAD(&afe->sub_dais); + + for (i = 0; i < ARRAY_SIZE(dai_register_cbs); i++) { + ret = dai_register_cbs[i](afe); + if (ret) { + dev_warn(afe->dev, "dai register i %d fail, ret %d\n", + i, ret); + goto err_pm_disable; + } + } + + /* init dai_driver and component_driver */ + ret = mtk_afe_combine_sub_dai(afe); + if (ret) { + dev_warn(afe->dev, "mtk_afe_combine_sub_dai fail, ret %d\n", + ret); + goto err_pm_disable; + } + + afe->mtk_afe_hardware = &mt79xx_afe_hardware; + afe->memif_fs = mt79xx_memif_fs; + afe->irq_fs = mt79xx_irq_fs; + + afe->runtime_resume = mt79xx_afe_runtime_resume; + afe->runtime_suspend = mt79xx_afe_runtime_suspend; + + /* register component */ + ret = devm_snd_soc_register_component(&pdev->dev, + &mt79xx_afe_component, + NULL, 0); + if (ret) { + dev_warn(dev, "err_platform\n"); + goto err_pm_disable; + } + + ret = devm_snd_soc_register_component(afe->dev, + &mt79xx_afe_pcm_dai_component, + afe->dai_drivers, + afe->num_dai_drivers); + if (ret) { + dev_warn(dev, "err_dai_component\n"); + goto err_pm_disable; + } + + return ret; + +err_pm_disable: + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + return ret; +} + +static int mt79xx_afe_pcm_dev_remove(struct platform_device *pdev) +{ + pm_runtime_disable(&pdev->dev); + if (!pm_runtime_status_suspended(&pdev->dev)) + mt79xx_afe_runtime_suspend(&pdev->dev); + + return 0; +} + +static const struct of_device_id mt79xx_afe_pcm_dt_match[] = { + { .compatible = "mediatek,mt79xx-afe", }, + {}, +}; +MODULE_DEVICE_TABLE(of, mt79xx_afe_pcm_dt_match); + +static const struct dev_pm_ops mt79xx_afe_pm_ops = { + SET_RUNTIME_PM_OPS(mt79xx_afe_runtime_suspend, + mt79xx_afe_runtime_resume, NULL) +}; + +static struct platform_driver mt79xx_afe_pcm_driver = { + .driver = { + .name = "mt79xx-audio", + .of_match_table = mt79xx_afe_pcm_dt_match, + .pm = &mt79xx_afe_pm_ops, + }, + .probe = mt79xx_afe_pcm_dev_probe, + .remove = mt79xx_afe_pcm_dev_remove, +}; + +module_platform_driver(mt79xx_afe_pcm_driver); + +MODULE_DESCRIPTION("Mediatek SoC AFE platform driver for ALSA MT79xx"); +MODULE_AUTHOR("Vic Wu vic.wu@mediatek.com"); +MODULE_LICENSE("GPL");