/* * Mediatek ALSA SoC AFE platform driver * * Copyright (c) 2015 MediaTek Inc. * Author: Koro Chen * Sascha Hauer * Hidalgo Huang * Ir Lian * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include "mtk-afe-common.h" /***************************************************************************** * R E G I S T E R D E F I N I T I O N *****************************************************************************/ #define AUDIO_TOP_CON0 0x0000 #define AUDIO_TOP_CON1 0x0004 #define AFE_DAC_CON0 0x0010 #define AFE_DAC_CON1 0x0014 #define AFE_I2S_CON1 0x0034 #define AFE_I2S_CON2 0x0038 #define AFE_CONN_24BIT 0x006c #define AFE_MEMIF_MSB 0x00cc #define AFE_CONN1 0x0024 #define AFE_CONN2 0x0028 #define AFE_CONN3 0x002c #define AFE_CONN7 0x0460 #define AFE_CONN8 0x0464 #define AFE_HDMI_CONN0 0x0390 /* 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_ADDA_TOP_CON0 0x0120 #define AFE_ADDA2_TOP_CON0 0x0600 #define AFE_HDMI_OUT_CON0 0x0370 #define AFE_IRQ_MCU_CON 0x03a0 #define AFE_IRQ_STATUS 0x03a4 #define AFE_IRQ_CLR 0x03a8 #define AFE_IRQ_CNT1 0x03ac #define AFE_IRQ_CNT2 0x03b0 #define AFE_IRQ_MCU_EN 0x03b4 #define AFE_IRQ_CNT5 0x03bc #define AFE_IRQ_CNT7 0x03dc #define AFE_TDM_CON1 0x0548 #define AFE_TDM_CON2 0x054c #define AFE_BASE_END_OFFSET 8 #define AFE_IRQ_STATUS_BITS 0xff /* AUDIO_TOP_CON0 (0x0000) */ #define AUD_TCON0_PDN_SPDF (0x1 << 21) #define AUD_TCON0_PDN_HDMI (0x1 << 20) #define AUD_TCON0_PDN_24M (0x1 << 9) #define AUD_TCON0_PDN_22M (0x1 << 8) #define AUD_TCON0_PDN_AFE (0x1 << 2) /* AFE_I2S_CON1 (0x0034) */ #define AFE_I2S_CON1_LOW_JITTER_CLK (0x1 << 12) #define AFE_I2S_CON1_RATE(x) (((x) & 0xf) << 8) #define AFE_I2S_CON1_FORMAT_I2S (0x1 << 3) #define AFE_I2S_CON1_EN (0x1 << 0) /* AFE_I2S_CON2 (0x0038) */ #define AFE_I2S_CON2_LOW_JITTER_CLK (0x1 << 12) #define AFE_I2S_CON2_RATE(x) (((x) & 0xf) << 8) #define AFE_I2S_CON2_FORMAT_I2S (0x1 << 3) #define AFE_I2S_CON2_EN (0x1 << 0) /* AFE_CONN_24BIT (0x006c) */ #define AFE_CONN_24BIT_O04 (0x1 << 4) #define AFE_CONN_24BIT_O03 (0x1 << 3) /* AFE_HDMI_CONN0 (0x0390) */ #define AFE_HDMI_CONN0_O37_I37 (0x7 << 21) #define AFE_HDMI_CONN0_O36_I36 (0x6 << 18) #define AFE_HDMI_CONN0_O35_I33 (0x3 << 15) #define AFE_HDMI_CONN0_O34_I32 (0x2 << 12) #define AFE_HDMI_CONN0_O33_I35 (0x5 << 9) #define AFE_HDMI_CONN0_O32_I34 (0x4 << 6) #define AFE_HDMI_CONN0_O31_I31 (0x1 << 3) #define AFE_HDMI_CONN0_O30_I30 (0x0 << 0) /* AFE_TDM_CON1 (0x0548) */ #define AFE_TDM_CON1_LRCK_WIDTH(x) (((x) - 1) << 24) #define AFE_TDM_CON1_32_BCK_CYCLES (0x2 << 12) #define AFE_TDM_CON1_WLEN_32BIT (0x2 << 8) #define AFE_TDM_CON1_MSB_ALIGNED (0x1 << 4) #define AFE_TDM_CON1_1_BCK_DELAY (0x1 << 3) #define AFE_TDM_CON1_LRCK_INV (0x1 << 2) #define AFE_TDM_CON1_BCK_INV (0x1 << 1) #define AFE_TDM_CON1_EN (0x1 << 0) enum afe_tdm_ch_start { AFE_TDM_CH_START_O30_O31 = 0, AFE_TDM_CH_START_O32_O33, AFE_TDM_CH_START_O34_O35, AFE_TDM_CH_START_O36_O37, 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), .buffer_bytes_max = 256 * 1024, .period_bytes_min = 512, .period_bytes_max = 128 * 1024, .periods_min = 2, .periods_max = 256, .fifo_size = 0, }; static snd_pcm_uframes_t mtk_afe_pcm_pointer (struct snd_pcm_substream *substream) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); struct mtk_afe_memif *memif = &afe->memif[rtd->cpu_dai->id]; unsigned int hw_ptr; int ret; ret = regmap_read(afe->regmap, memif->data->reg_ofs_cur, &hw_ptr); if (ret || hw_ptr == 0) { dev_err(afe->dev, "%s hw_ptr err\n", __func__); hw_ptr = memif->phys_buf_addr; } return bytes_to_frames(substream->runtime, hw_ptr - memif->phys_buf_addr); } static const struct snd_pcm_ops mtk_afe_pcm_ops = { .ioctl = snd_pcm_lib_ioctl, .pointer = mtk_afe_pcm_pointer, }; static int mtk_afe_pcm_new(struct snd_soc_pcm_runtime *rtd) { size_t size; struct snd_card *card = rtd->card->snd_card; struct snd_pcm *pcm = rtd->pcm; size = mtk_afe_hardware.buffer_bytes_max; return snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, card->dev, size, size); } static void mtk_afe_pcm_free(struct snd_pcm *pcm) { snd_pcm_lib_preallocate_free_for_all(pcm); } static const struct snd_soc_platform_driver mtk_afe_pcm_platform = { .ops = &mtk_afe_pcm_ops, .pcm_new = mtk_afe_pcm_new, .pcm_free = mtk_afe_pcm_free, }; struct mtk_afe_rate { unsigned int rate; unsigned int regvalue; }; static const struct mtk_afe_rate mtk_afe_i2s_rates[] = { { .rate = 8000, .regvalue = 0 }, { .rate = 11025, .regvalue = 1 }, { .rate = 12000, .regvalue = 2 }, { .rate = 16000, .regvalue = 4 }, { .rate = 22050, .regvalue = 5 }, { .rate = 24000, .regvalue = 6 }, { .rate = 32000, .regvalue = 8 }, { .rate = 44100, .regvalue = 9 }, { .rate = 48000, .regvalue = 10 }, { .rate = 88000, .regvalue = 11 }, { .rate = 96000, .regvalue = 12 }, { .rate = 174000, .regvalue = 13 }, { .rate = 192000, .regvalue = 14 }, }; static int mtk_afe_i2s_fs(unsigned int sample_rate) { int i; for (i = 0; i < ARRAY_SIZE(mtk_afe_i2s_rates); i++) if (mtk_afe_i2s_rates[i].rate == sample_rate) return mtk_afe_i2s_rates[i].regvalue; return -EINVAL; } static int mtk_afe_set_i2s(struct mtk_afe *afe, unsigned int rate) { unsigned int val; int fs = mtk_afe_i2s_fs(rate); if (fs < 0) return -EINVAL; /* from external ADC */ regmap_update_bits(afe->regmap, AFE_ADDA_TOP_CON0, 0x1, 0x1); regmap_update_bits(afe->regmap, AFE_ADDA2_TOP_CON0, 0x1, 0x1); /* set input */ val = AFE_I2S_CON2_LOW_JITTER_CLK | AFE_I2S_CON2_RATE(fs) | AFE_I2S_CON2_FORMAT_I2S; regmap_update_bits(afe->regmap, AFE_I2S_CON2, ~AFE_I2S_CON2_EN, val); /* set output */ val = AFE_I2S_CON1_LOW_JITTER_CLK | AFE_I2S_CON1_RATE(fs) | AFE_I2S_CON1_FORMAT_I2S; regmap_update_bits(afe->regmap, AFE_I2S_CON1, ~AFE_I2S_CON1_EN, val); return 0; } static void mtk_afe_set_i2s_enable(struct mtk_afe *afe, bool enable) { unsigned int val; regmap_read(afe->regmap, AFE_I2S_CON2, &val); if (!!(val & AFE_I2S_CON2_EN) == enable) return; /* input */ regmap_update_bits(afe->regmap, AFE_I2S_CON2, 0x1, enable); /* output */ regmap_update_bits(afe->regmap, AFE_I2S_CON1, 0x1, enable); } static int mtk_afe_dais_enable_clks(struct mtk_afe *afe, struct clk *m_ck, struct clk *b_ck) { int ret; if (m_ck) { ret = clk_prepare_enable(m_ck); if (ret) { dev_err(afe->dev, "Failed to enable m_ck\n"); return ret; } } if (b_ck) { ret = clk_prepare_enable(b_ck); if (ret) { dev_err(afe->dev, "Failed to enable b_ck\n"); return ret; } } return 0; } static int mtk_afe_dais_set_clks(struct mtk_afe *afe, struct clk *m_ck, unsigned int mck_rate, struct clk *b_ck, unsigned int bck_rate) { int ret; if (m_ck) { ret = clk_set_rate(m_ck, mck_rate); if (ret) { dev_err(afe->dev, "Failed to set m_ck rate\n"); return ret; } } if (b_ck) { ret = clk_set_rate(b_ck, bck_rate); if (ret) { dev_err(afe->dev, "Failed to set b_ck rate\n"); return ret; } } return 0; } static void mtk_afe_dais_disable_clks(struct mtk_afe *afe, struct clk *m_ck, struct clk *b_ck) { if (m_ck) clk_disable_unprepare(m_ck); if (b_ck) clk_disable_unprepare(b_ck); } static int mtk_afe_i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); if (dai->active) return 0; mtk_afe_dais_enable_clks(afe, afe->clocks[MTK_CLK_I2S1_M], NULL); mtk_afe_dais_enable_clks(afe, afe->clocks[MTK_CLK_I2S2_M], NULL); regmap_update_bits(afe->regmap, AUDIO_TOP_CON0, AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M, 0); return 0; } static void mtk_afe_i2s_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); if (dai->active) return; mtk_afe_set_i2s_enable(afe, false); regmap_update_bits(afe->regmap, AUDIO_TOP_CON0, AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M, AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M); mtk_afe_dais_disable_clks(afe, afe->clocks[MTK_CLK_I2S1_M], NULL); mtk_afe_dais_disable_clks(afe, afe->clocks[MTK_CLK_I2S2_M], NULL); } static int mtk_afe_i2s_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_pcm_runtime * const runtime = substream->runtime; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); int ret; mtk_afe_dais_set_clks(afe, afe->clocks[MTK_CLK_I2S1_M], runtime->rate * 256, NULL, 0); mtk_afe_dais_set_clks(afe, afe->clocks[MTK_CLK_I2S2_M], runtime->rate * 256, NULL, 0); /* config I2S */ ret = mtk_afe_set_i2s(afe, substream->runtime->rate); if (ret) return ret; mtk_afe_set_i2s_enable(afe, true); return 0; } static int mtk_afe_hdmi_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); if (dai->active) return 0; mtk_afe_dais_enable_clks(afe, afe->clocks[MTK_CLK_I2S3_M], afe->clocks[MTK_CLK_I2S3_B]); return 0; } static void mtk_afe_hdmi_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); if (dai->active) return; mtk_afe_dais_disable_clks(afe, afe->clocks[MTK_CLK_I2S3_M], afe->clocks[MTK_CLK_I2S3_B]); } static int mtk_afe_hdmi_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_pcm_runtime * const runtime = substream->runtime; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); unsigned int val; mtk_afe_dais_set_clks(afe, afe->clocks[MTK_CLK_I2S3_M], runtime->rate * 128, afe->clocks[MTK_CLK_I2S3_B], runtime->rate * runtime->channels * 32); val = AFE_TDM_CON1_BCK_INV | AFE_TDM_CON1_LRCK_INV | AFE_TDM_CON1_1_BCK_DELAY | AFE_TDM_CON1_MSB_ALIGNED | /* I2S mode */ AFE_TDM_CON1_WLEN_32BIT | AFE_TDM_CON1_32_BCK_CYCLES | AFE_TDM_CON1_LRCK_WIDTH(32); regmap_update_bits(afe->regmap, AFE_TDM_CON1, ~AFE_TDM_CON1_EN, val); /* set tdm2 config */ switch (runtime->channels) { case 1: case 2: val = AFE_TDM_CH_START_O30_O31; val |= (AFE_TDM_CH_ZERO << 4); val |= (AFE_TDM_CH_ZERO << 8); val |= (AFE_TDM_CH_ZERO << 12); break; case 3: case 4: val = AFE_TDM_CH_START_O30_O31; val |= (AFE_TDM_CH_START_O32_O33 << 4); val |= (AFE_TDM_CH_ZERO << 8); val |= (AFE_TDM_CH_ZERO << 12); break; case 5: case 6: val = AFE_TDM_CH_START_O30_O31; val |= (AFE_TDM_CH_START_O32_O33 << 4); val |= (AFE_TDM_CH_START_O34_O35 << 8); val |= (AFE_TDM_CH_ZERO << 12); break; case 7: case 8: val = AFE_TDM_CH_START_O30_O31; val |= (AFE_TDM_CH_START_O32_O33 << 4); val |= (AFE_TDM_CH_START_O34_O35 << 8); val |= (AFE_TDM_CH_START_O36_O37 << 12); break; default: val = 0; } regmap_update_bits(afe->regmap, AFE_TDM_CON2, 0x0000ffff, val); regmap_update_bits(afe->regmap, AFE_HDMI_OUT_CON0, 0x000000f0, runtime->channels << 4); return 0; } static int mtk_afe_hdmi_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); dev_info(afe->dev, "%s cmd=%d %s\n", __func__, cmd, dai->name); switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: regmap_update_bits(afe->regmap, AUDIO_TOP_CON0, AUD_TCON0_PDN_HDMI | AUD_TCON0_PDN_SPDF, 0); /* set connections: O30~O37: L/R/LS/RS/C/LFE/CH7/CH8 */ regmap_write(afe->regmap, AFE_HDMI_CONN0, AFE_HDMI_CONN0_O30_I30 | AFE_HDMI_CONN0_O31_I31 | AFE_HDMI_CONN0_O32_I34 | AFE_HDMI_CONN0_O33_I35 | AFE_HDMI_CONN0_O34_I32 | AFE_HDMI_CONN0_O35_I33 | AFE_HDMI_CONN0_O36_I36 | AFE_HDMI_CONN0_O37_I37); /* enable Out control */ regmap_update_bits(afe->regmap, AFE_HDMI_OUT_CON0, 0x1, 0x1); /* enable tdm */ regmap_update_bits(afe->regmap, AFE_TDM_CON1, 0x1, 0x1); return 0; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: /* disable tdm */ regmap_update_bits(afe->regmap, AFE_TDM_CON1, 0x1, 0); /* disable Out control */ regmap_update_bits(afe->regmap, AFE_HDMI_OUT_CON0, 0x1, 0); regmap_update_bits(afe->regmap, AUDIO_TOP_CON0, AUD_TCON0_PDN_HDMI | AUD_TCON0_PDN_SPDF, AUD_TCON0_PDN_HDMI | AUD_TCON0_PDN_SPDF); return 0; default: return -EINVAL; } } static int mtk_afe_dais_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); struct snd_pcm_runtime *runtime = substream->runtime; struct mtk_afe_memif *memif = &afe->memif[rtd->cpu_dai->id]; int ret; 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) dev_err(afe->dev, "snd_pcm_hw_constraint_integer failed\n"); return ret; } static void mtk_afe_dais_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); struct mtk_afe_memif *memif = &afe->memif[rtd->cpu_dai->id]; memif->substream = NULL; } static int mtk_afe_dais_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); struct mtk_afe_memif *memif = &afe->memif[rtd->cpu_dai->id]; int msb_at_bit33 = 0; int ret; dev_dbg(afe->dev, "%s period = %u, rate= %u, channels=%u\n", __func__, params_period_size(params), params_rate(params), params_channels(params)); ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); if (ret < 0) return ret; msb_at_bit33 = upper_32_bits(substream->runtime->dma_addr) ? 1 : 0; memif->phys_buf_addr = lower_32_bits(substream->runtime->dma_addr); memif->buffer_size = substream->runtime->dma_bytes; /* start */ regmap_write(afe->regmap, memif->data->reg_ofs_base, memif->phys_buf_addr); /* end */ regmap_write(afe->regmap, memif->data->reg_ofs_base + AFE_BASE_END_OFFSET, memif->phys_buf_addr + memif->buffer_size - 1); /* set MSB to 33-bit */ regmap_update_bits(afe->regmap, AFE_MEMIF_MSB, 1 << memif->data->msb_shift, msb_at_bit33 << memif->data->msb_shift); /* set channel */ if (memif->data->mono_shift >= 0) { unsigned int mono = (params_channels(params) == 1) ? 1 : 0; regmap_update_bits(afe->regmap, AFE_DAC_CON1, 1 << memif->data->mono_shift, mono << memif->data->mono_shift); } /* set rate */ if (memif->data->fs_shift < 0) return 0; if (memif->data->id == MTK_AFE_MEMIF_DAI || memif->data->id == MTK_AFE_MEMIF_MOD_DAI) { unsigned int val; switch (params_rate(params)) { case 8000: val = 0; break; case 16000: val = 1; break; case 32000: val = 2; break; default: return -EINVAL; } if (memif->data->id == MTK_AFE_MEMIF_DAI) regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x3 << memif->data->fs_shift, val << memif->data->fs_shift); else regmap_update_bits(afe->regmap, AFE_DAC_CON1, 0x3 << memif->data->fs_shift, val << memif->data->fs_shift); } else { int fs = mtk_afe_i2s_fs(params_rate(params)); if (fs < 0) return -EINVAL; regmap_update_bits(afe->regmap, AFE_DAC_CON1, 0xf << memif->data->fs_shift, fs << memif->data->fs_shift); } return 0; } static int mtk_afe_dais_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { return snd_pcm_lib_free_pages(substream); } static int mtk_afe_dais_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_pcm_runtime * const runtime = substream->runtime; struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform); struct mtk_afe_memif *memif = &afe->memif[rtd->cpu_dai->id]; unsigned int counter = runtime->period_size; dev_info(afe->dev, "%s %s cmd=%d\n", __func__, memif->data->name, cmd); switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: if (memif->data->enable_shift >= 0) regmap_update_bits(afe->regmap, AFE_DAC_CON0, 1 << memif->data->enable_shift, 1 << memif->data->enable_shift); /* set irq counter */ regmap_update_bits(afe->regmap, memif->data->irq_reg_cnt, 0x3ffff << memif->data->irq_cnt_shift, counter << memif->data->irq_cnt_shift); /* set irq fs */ if (memif->data->irq_fs_shift >= 0) { int fs = mtk_afe_i2s_fs(runtime->rate); if (fs < 0) return -EINVAL; regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CON, 0xf << memif->data->irq_fs_shift, fs << memif->data->irq_fs_shift); } /* enable interrupt */ regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CON, 1 << memif->data->irq_en_shift, 1 << memif->data->irq_en_shift); return 0; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: if (memif->data->enable_shift >= 0) regmap_update_bits(afe->regmap, AFE_DAC_CON0, 1 << memif->data->enable_shift, 0); /* disable interrupt */ regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CON, 1 << memif->data->irq_en_shift, 0 << memif->data->irq_en_shift); /* and clear pending IRQ */ regmap_write(afe->regmap, AFE_IRQ_CLR, 1 << memif->data->irq_clr_shift); return 0; default: return -EINVAL; } } /* FE DAIs */ static const struct snd_soc_dai_ops mtk_afe_dai_ops = { .startup = mtk_afe_dais_startup, .shutdown = mtk_afe_dais_shutdown, .hw_params = mtk_afe_dais_hw_params, .hw_free = mtk_afe_dais_hw_free, .trigger = mtk_afe_dais_trigger, }; /* BE DAIs */ static const struct snd_soc_dai_ops mtk_afe_i2s_ops = { .startup = mtk_afe_i2s_startup, .shutdown = mtk_afe_i2s_shutdown, .prepare = mtk_afe_i2s_prepare, }; static const struct snd_soc_dai_ops mtk_afe_hdmi_ops = { .startup = mtk_afe_hdmi_startup, .shutdown = mtk_afe_hdmi_shutdown, .prepare = mtk_afe_hdmi_prepare, .trigger = mtk_afe_hdmi_trigger, }; 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, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_48000, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, .ops = &mtk_afe_dai_ops, }, { .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, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_48000, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, .ops = &mtk_afe_dai_ops, }, { /* BE DAIs */ .name = "I2S", .id = MTK_AFE_IO_I2S, .playback = { .stream_name = "I2S Playback", .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_48000, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, .capture = { .stream_name = "I2S Capture", .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_48000, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, .ops = &mtk_afe_i2s_ops, .symmetric_rates = 1, }, }; static struct snd_soc_dai_driver mtk_afe_hdmi_dais[] = { /* FE 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, .channels_max = 8, .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, .ops = &mtk_afe_dai_ops, }, { /* BE DAIs */ .name = "HDMIO", .id = MTK_AFE_IO_HDMI, .playback = { .stream_name = "HDMIO Playback", .channels_min = 2, .channels_max = 8, .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, .ops = &mtk_afe_hdmi_ops, }, }; static const struct snd_kcontrol_new mtk_afe_o03_mix[] = { SOC_DAPM_SINGLE_AUTODISABLE("I05 Switch", AFE_CONN1, 21, 1, 0), }; static const struct snd_kcontrol_new mtk_afe_o04_mix[] = { SOC_DAPM_SINGLE_AUTODISABLE("I06 Switch", AFE_CONN2, 6, 1, 0), }; static const struct snd_kcontrol_new mtk_afe_o09_mix[] = { SOC_DAPM_SINGLE_AUTODISABLE("I03 Switch", AFE_CONN3, 0, 1, 0), SOC_DAPM_SINGLE_AUTODISABLE("I17 Switch", AFE_CONN7, 30, 1, 0), }; static const struct snd_kcontrol_new mtk_afe_o10_mix[] = { SOC_DAPM_SINGLE_AUTODISABLE("I04 Switch", AFE_CONN3, 3, 1, 0), SOC_DAPM_SINGLE_AUTODISABLE("I18 Switch", AFE_CONN8, 0, 1, 0), }; static const struct snd_soc_dapm_widget mtk_afe_pcm_widgets[] = { /* inter-connections */ SND_SOC_DAPM_MIXER("I03", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_MIXER("I04", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_MIXER("I05", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_MIXER("I06", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_MIXER("I17", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_MIXER("I18", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_MIXER("O03", SND_SOC_NOPM, 0, 0, mtk_afe_o03_mix, ARRAY_SIZE(mtk_afe_o03_mix)), SND_SOC_DAPM_MIXER("O04", SND_SOC_NOPM, 0, 0, mtk_afe_o04_mix, ARRAY_SIZE(mtk_afe_o04_mix)), SND_SOC_DAPM_MIXER("O09", SND_SOC_NOPM, 0, 0, mtk_afe_o09_mix, ARRAY_SIZE(mtk_afe_o09_mix)), SND_SOC_DAPM_MIXER("O10", SND_SOC_NOPM, 0, 0, mtk_afe_o10_mix, ARRAY_SIZE(mtk_afe_o10_mix)), }; static const struct snd_soc_dapm_route mtk_afe_pcm_routes[] = { {"I05", NULL, "DL1"}, {"I06", NULL, "DL1"}, {"I2S Playback", NULL, "O03"}, {"I2S Playback", NULL, "O04"}, {"VUL", NULL, "O09"}, {"VUL", NULL, "O10"}, {"I03", NULL, "I2S Capture"}, {"I04", NULL, "I2S Capture"}, {"I17", NULL, "I2S Capture"}, {"I18", NULL, "I2S Capture"}, { "O03", "I05 Switch", "I05" }, { "O04", "I06 Switch", "I06" }, { "O09", "I17 Switch", "I17" }, { "O09", "I03 Switch", "I03" }, { "O10", "I18 Switch", "I18" }, { "O10", "I04 Switch", "I04" }, }; static const struct snd_soc_dapm_route mtk_afe_hdmi_routes[] = { {"HDMIO Playback", NULL, "HDMI"}, }; static const struct snd_soc_component_driver mtk_afe_pcm_dai_component = { .name = "mtk-afe-pcm-dai", .dapm_widgets = mtk_afe_pcm_widgets, .num_dapm_widgets = ARRAY_SIZE(mtk_afe_pcm_widgets), .dapm_routes = mtk_afe_pcm_routes, .num_dapm_routes = ARRAY_SIZE(mtk_afe_pcm_routes), }; static const struct snd_soc_component_driver mtk_afe_hdmi_dai_component = { .name = "mtk-afe-hdmi-dai", .dapm_routes = mtk_afe_hdmi_routes, .num_dapm_routes = ARRAY_SIZE(mtk_afe_hdmi_routes), }; static const char *aud_clks[MTK_CLK_NUM] = { [MTK_CLK_INFRASYS_AUD] = "infra_sys_audio_clk", [MTK_CLK_TOP_PDN_AUD] = "top_pdn_audio", [MTK_CLK_TOP_PDN_AUD_BUS] = "top_pdn_aud_intbus", [MTK_CLK_I2S0_M] = "i2s0_m", [MTK_CLK_I2S1_M] = "i2s1_m", [MTK_CLK_I2S2_M] = "i2s2_m", [MTK_CLK_I2S3_M] = "i2s3_m", [MTK_CLK_I2S3_B] = "i2s3_b", [MTK_CLK_BCK0] = "bck0", [MTK_CLK_BCK1] = "bck1", }; static const struct mtk_afe_memif_data memif_data[MTK_AFE_MEMIF_NUM] = { { .name = "DL1", .id = MTK_AFE_MEMIF_DL1, .reg_ofs_base = AFE_DL1_BASE, .reg_ofs_cur = AFE_DL1_CUR, .fs_shift = 0, .mono_shift = 21, .enable_shift = 1, .irq_reg_cnt = AFE_IRQ_CNT1, .irq_cnt_shift = 0, .irq_en_shift = 0, .irq_fs_shift = 4, .irq_clr_shift = 0, .msb_shift = 0, }, { .name = "DL2", .id = MTK_AFE_MEMIF_DL2, .reg_ofs_base = AFE_DL2_BASE, .reg_ofs_cur = AFE_DL2_CUR, .fs_shift = 4, .mono_shift = 22, .enable_shift = 2, .irq_reg_cnt = AFE_IRQ_CNT1, .irq_cnt_shift = 20, .irq_en_shift = 2, .irq_fs_shift = 16, .irq_clr_shift = 2, .msb_shift = 1, }, { .name = "VUL", .id = MTK_AFE_MEMIF_VUL, .reg_ofs_base = AFE_VUL_BASE, .reg_ofs_cur = AFE_VUL_CUR, .fs_shift = 16, .mono_shift = 27, .enable_shift = 3, .irq_reg_cnt = AFE_IRQ_CNT2, .irq_cnt_shift = 0, .irq_en_shift = 1, .irq_fs_shift = 8, .irq_clr_shift = 1, .msb_shift = 6, }, { .name = "DAI", .id = MTK_AFE_MEMIF_DAI, .reg_ofs_base = AFE_DAI_BASE, .reg_ofs_cur = AFE_DAI_CUR, .fs_shift = 24, .mono_shift = -1, .enable_shift = 4, .irq_reg_cnt = AFE_IRQ_CNT2, .irq_cnt_shift = 20, .irq_en_shift = 3, .irq_fs_shift = 20, .irq_clr_shift = 3, .msb_shift = 5, }, { .name = "AWB", .id = MTK_AFE_MEMIF_AWB, .reg_ofs_base = AFE_AWB_BASE, .reg_ofs_cur = AFE_AWB_CUR, .fs_shift = 12, .mono_shift = 24, .enable_shift = 6, .irq_reg_cnt = AFE_IRQ_CNT7, .irq_cnt_shift = 0, .irq_en_shift = 14, .irq_fs_shift = 24, .irq_clr_shift = 6, .msb_shift = 3, }, { .name = "MOD_DAI", .id = MTK_AFE_MEMIF_MOD_DAI, .reg_ofs_base = AFE_MOD_PCM_BASE, .reg_ofs_cur = AFE_MOD_PCM_CUR, .fs_shift = 30, .mono_shift = 30, .enable_shift = 7, .irq_reg_cnt = AFE_IRQ_CNT2, .irq_cnt_shift = 20, .irq_en_shift = 3, .irq_fs_shift = 20, .irq_clr_shift = 3, .msb_shift = 4, }, { .name = "HDMI", .id = MTK_AFE_MEMIF_HDMI, .reg_ofs_base = AFE_HDMI_OUT_BASE, .reg_ofs_cur = AFE_HDMI_OUT_CUR, .fs_shift = -1, .mono_shift = -1, .enable_shift = -1, .irq_reg_cnt = AFE_IRQ_CNT5, .irq_cnt_shift = 0, .irq_en_shift = 12, .irq_fs_shift = -1, .irq_clr_shift = 4, .msb_shift = 8, }, }; static const struct regmap_config mtk_afe_regmap_config = { .reg_bits = 32, .reg_stride = 4, .val_bits = 32, .max_register = AFE_ADDA2_TOP_CON0, .cache_type = REGCACHE_NONE, }; static irqreturn_t mtk_afe_irq_handler(int irq, void *dev_id) { struct mtk_afe *afe = dev_id; unsigned int reg_value; int i, ret; ret = regmap_read(afe->regmap, AFE_IRQ_STATUS, ®_value); if (ret) { dev_err(afe->dev, "%s irq status err\n", __func__); reg_value = AFE_IRQ_STATUS_BITS; goto err_irq; } for (i = 0; i < MTK_AFE_MEMIF_NUM; i++) { struct mtk_afe_memif *memif = &afe->memif[i]; if (!(reg_value & (1 << memif->data->irq_clr_shift))) continue; snd_pcm_period_elapsed(memif->substream); } err_irq: /* clear irq */ regmap_write(afe->regmap, AFE_IRQ_CLR, reg_value & AFE_IRQ_STATUS_BITS); return IRQ_HANDLED; } static int mtk_afe_runtime_suspend(struct device *dev) { struct mtk_afe *afe = dev_get_drvdata(dev); /* disable AFE */ regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0); /* disable AFE clk */ regmap_update_bits(afe->regmap, AUDIO_TOP_CON0, AUD_TCON0_PDN_AFE, AUD_TCON0_PDN_AFE); clk_disable_unprepare(afe->clocks[MTK_CLK_BCK0]); clk_disable_unprepare(afe->clocks[MTK_CLK_BCK1]); clk_disable_unprepare(afe->clocks[MTK_CLK_TOP_PDN_AUD]); clk_disable_unprepare(afe->clocks[MTK_CLK_TOP_PDN_AUD_BUS]); clk_disable_unprepare(afe->clocks[MTK_CLK_INFRASYS_AUD]); return 0; } static int mtk_afe_runtime_resume(struct device *dev) { struct mtk_afe *afe = dev_get_drvdata(dev); int ret; ret = clk_prepare_enable(afe->clocks[MTK_CLK_INFRASYS_AUD]); if (ret) return ret; ret = clk_prepare_enable(afe->clocks[MTK_CLK_TOP_PDN_AUD_BUS]); if (ret) goto err_infra; ret = clk_prepare_enable(afe->clocks[MTK_CLK_TOP_PDN_AUD]); if (ret) goto err_top_aud_bus; ret = clk_prepare_enable(afe->clocks[MTK_CLK_BCK0]); if (ret) goto err_top_aud; ret = clk_prepare_enable(afe->clocks[MTK_CLK_BCK1]); if (ret) goto err_bck0; /* enable AFE clk */ regmap_update_bits(afe->regmap, AUDIO_TOP_CON0, AUD_TCON0_PDN_AFE, 0); /* set O3/O4 16bits */ regmap_update_bits(afe->regmap, AFE_CONN_24BIT, AFE_CONN_24BIT_O03 | AFE_CONN_24BIT_O04, 0); /* unmask all IRQs */ regmap_update_bits(afe->regmap, AFE_IRQ_MCU_EN, 0xff, 0xff); /* enable AFE */ regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0x1); return 0; err_bck0: clk_disable_unprepare(afe->clocks[MTK_CLK_BCK0]); err_top_aud: clk_disable_unprepare(afe->clocks[MTK_CLK_TOP_PDN_AUD]); err_top_aud_bus: clk_disable_unprepare(afe->clocks[MTK_CLK_TOP_PDN_AUD_BUS]); err_infra: clk_disable_unprepare(afe->clocks[MTK_CLK_INFRASYS_AUD]); return ret; } static int mtk_afe_init_audio_clk(struct mtk_afe *afe) { size_t i; for (i = 0; i < ARRAY_SIZE(aud_clks); i++) { afe->clocks[i] = devm_clk_get(afe->dev, aud_clks[i]); if (IS_ERR(afe->clocks[i])) { dev_err(afe->dev, "%s devm_clk_get %s fail\n", __func__, aud_clks[i]); return PTR_ERR(afe->clocks[i]); } } clk_set_rate(afe->clocks[MTK_CLK_BCK0], 22579200); /* 22M */ clk_set_rate(afe->clocks[MTK_CLK_BCK1], 24576000); /* 24M */ return 0; } static int mtk_afe_pcm_dev_probe(struct platform_device *pdev) { int ret, i; unsigned int irq_id; struct mtk_afe *afe; struct resource *res; ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(33)); if (ret) return ret; afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL); if (!afe) return -ENOMEM; afe->dev = &pdev->dev; irq_id = platform_get_irq(pdev, 0); if (!irq_id) { dev_err(afe->dev, "np %s no irq\n", afe->dev->of_node->name); return -ENXIO; } ret = devm_request_irq(afe->dev, irq_id, mtk_afe_irq_handler, 0, "Afe_ISR_Handle", (void *)afe); if (ret) { dev_err(afe->dev, "could not request_irq\n"); return ret; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); afe->base_addr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(afe->base_addr)) return PTR_ERR(afe->base_addr); afe->regmap = devm_regmap_init_mmio(&pdev->dev, afe->base_addr, &mtk_afe_regmap_config); if (IS_ERR(afe->regmap)) return PTR_ERR(afe->regmap); /* initial audio related clock */ ret = mtk_afe_init_audio_clk(afe); if (ret) { dev_err(afe->dev, "mtk_afe_init_audio_clk fail\n"); return ret; } for (i = 0; i < MTK_AFE_MEMIF_NUM; i++) afe->memif[i].data = &memif_data[i]; platform_set_drvdata(pdev, afe); pm_runtime_enable(&pdev->dev); if (!pm_runtime_enabled(&pdev->dev)) { ret = mtk_afe_runtime_resume(&pdev->dev); if (ret) goto err_pm_disable; } ret = snd_soc_register_platform(&pdev->dev, &mtk_afe_pcm_platform); if (ret) goto err_pm_disable; ret = snd_soc_register_component(&pdev->dev, &mtk_afe_pcm_dai_component, mtk_afe_pcm_dais, ARRAY_SIZE(mtk_afe_pcm_dais)); if (ret) goto err_platform; ret = snd_soc_register_component(&pdev->dev, &mtk_afe_hdmi_dai_component, mtk_afe_hdmi_dais, ARRAY_SIZE(mtk_afe_hdmi_dais)); if (ret) goto err_comp; dev_info(&pdev->dev, "MTK AFE driver initialized.\n"); return 0; err_comp: snd_soc_unregister_component(&pdev->dev); err_platform: snd_soc_unregister_platform(&pdev->dev); err_pm_disable: pm_runtime_disable(&pdev->dev); return ret; } static int mtk_afe_pcm_dev_remove(struct platform_device *pdev) { pm_runtime_disable(&pdev->dev); if (!pm_runtime_status_suspended(&pdev->dev)) mtk_afe_runtime_suspend(&pdev->dev); snd_soc_unregister_component(&pdev->dev); snd_soc_unregister_platform(&pdev->dev); return 0; } static const struct of_device_id mtk_afe_pcm_dt_match[] = { { .compatible = "mediatek,mt8173-afe-pcm", }, { } }; MODULE_DEVICE_TABLE(of, mtk_afe_pcm_dt_match); static const struct dev_pm_ops mtk_afe_pm_ops = { SET_RUNTIME_PM_OPS(mtk_afe_runtime_suspend, mtk_afe_runtime_resume, NULL) }; static struct platform_driver mtk_afe_pcm_driver = { .driver = { .name = "mtk-afe-pcm", .of_match_table = mtk_afe_pcm_dt_match, .pm = &mtk_afe_pm_ops, }, .probe = mtk_afe_pcm_dev_probe, .remove = mtk_afe_pcm_dev_remove, }; module_platform_driver(mtk_afe_pcm_driver); MODULE_DESCRIPTION("Mediatek ALSA SoC AFE platform driver"); MODULE_AUTHOR("Koro Chen "); MODULE_LICENSE("GPL v2");