[alsa-devel] [RESEND RFC PATCH 3/3] ASoC: mediatek: Add AFE platform driver
Koro Chen
koro.chen at mediatek.com
Fri Apr 10 10:14:09 CEST 2015
This is the platform driver of Mediatek's AFE (Audio Front End) unit
Signed-off-by: Koro Chen <koro.chen at mediatek.com>
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
sound/soc/Kconfig | 1 +
sound/soc/Makefile | 1 +
sound/soc/mediatek/Kconfig | 8 +
sound/soc/mediatek/Makefile | 2 +
sound/soc/mediatek/mtk-afe-pcm.c | 1497 ++++++++++++++++++++++++++++++++++++++
5 files changed, 1509 insertions(+)
create mode 100644 sound/soc/mediatek/Kconfig
create mode 100644 sound/soc/mediatek/Makefile
create mode 100644 sound/soc/mediatek/mtk-afe-pcm.c
diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig
index dcc79aa..c022374 100644
--- a/sound/soc/Kconfig
+++ b/sound/soc/Kconfig
@@ -45,6 +45,7 @@ source "sound/soc/nuc900/Kconfig"
source "sound/soc/omap/Kconfig"
source "sound/soc/kirkwood/Kconfig"
source "sound/soc/intel/Kconfig"
+source "sound/soc/mediatek/Kconfig"
source "sound/soc/mxs/Kconfig"
source "sound/soc/pxa/Kconfig"
source "sound/soc/rockchip/Kconfig"
diff --git a/sound/soc/Makefile b/sound/soc/Makefile
index 5b3c8f6..6f69f01d 100644
--- a/sound/soc/Makefile
+++ b/sound/soc/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_SND_SOC) += dwc/
obj-$(CONFIG_SND_SOC) += fsl/
obj-$(CONFIG_SND_SOC) += jz4740/
obj-$(CONFIG_SND_SOC) += intel/
+obj-$(CONFIG_SND_SOC) += mediatek/
obj-$(CONFIG_SND_SOC) += mxs/
obj-$(CONFIG_SND_SOC) += nuc900/
obj-$(CONFIG_SND_SOC) += omap/
diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig
new file mode 100644
index 0000000..7d97cf1
--- /dev/null
+++ b/sound/soc/mediatek/Kconfig
@@ -0,0 +1,8 @@
+config SND_SOC_MEDIATEK
+ bool "ASoC support for Mediatek chip"
+ depends on ARCH_MEDIATEK
+ help
+ This adds ASoC platform driver support for Mediatek chip
+ that can be used with other codecs.
+ Select Y if you have such device.
+ Ex: MT8173
diff --git a/sound/soc/mediatek/Makefile b/sound/soc/mediatek/Makefile
new file mode 100644
index 0000000..12003bb
--- /dev/null
+++ b/sound/soc/mediatek/Makefile
@@ -0,0 +1,2 @@
+# MTK Platform Support
+obj-$(CONFIG_SND_SOC_MEDIATEK) += mtk-afe-connection.o mtk-afe-pcm.o
diff --git a/sound/soc/mediatek/mtk-afe-pcm.c b/sound/soc/mediatek/mtk-afe-pcm.c
new file mode 100644
index 0000000..a89c753
--- /dev/null
+++ b/sound/soc/mediatek/mtk-afe-pcm.c
@@ -0,0 +1,1497 @@
+/*
+ * Mediatek ALSA SoC Afe platform driver
+ *
+ * Copyright (c) 2015 MediaTek Inc.
+ * Author: Koro Chen <koro.chen at mediatek.com>
+ * Sascha Hauer <s.hauer at pengutronix.de>
+ * Hidalgo Huang <hidalgo.huang at mediatek.com>
+ * Ir Lian <ir.lian at mediatek.com>
+ *
+ * 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 <linux/delay.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/pm_runtime.h>
+#include <sound/soc.h>
+#include "mtk-afe-common.h"
+#include "mtk-afe-connection.h"
+#include <dt-bindings/sound/mtk-afe.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_CON 0x0018
+#define AFE_I2S_CON1 0x0034
+#define AFE_I2S_CON2 0x0038
+#define AFE_I2S_CON3 0x004c
+#define AFE_CONN_24BIT 0x006c
+
+/* 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_DL2_END 0x0058
+#define AFE_AWB_BASE 0x0070
+#define AFE_AWB_END 0x0078
+#define AFE_AWB_CUR 0x007c
+#define AFE_VUL_BASE 0x0080
+#define AFE_VUL_END 0x0088
+#define AFE_VUL_CUR 0x008c
+#define AFE_DAI_BASE 0x0090
+#define AFE_DAI_END 0x0098
+#define AFE_DAI_CUR 0x009c
+#define AFE_MOD_PCM_BASE 0x0330
+#define AFE_MOD_PCM_END 0x0338
+#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_DL_SRC2_CON0 0x0108
+#define AFE_ADDA_DL_SRC2_CON1 0x010c
+#define AFE_ADDA_UL_SRC_CON0 0x0114
+#define AFE_ADDA_UL_SRC_CON1 0x0118
+#define AFE_ADDA_TOP_CON0 0x0120
+#define AFE_ADDA_UL_DL_CON0 0x0124
+#define AFE_ADDA_NEWIF_CFG0 0x0138
+#define AFE_ADDA_NEWIF_CFG1 0x013C
+#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
+
+#define AFE_TDM_CON1_BCK_INV (1 << 1)
+#define AFE_TDM_CON1_LRCK_INV (1 << 2)
+#define AFE_TDM_CON1_1_BCK_DELAY (1 << 3)
+#define AFE_TDM_CON1_MSB_ALIGNED (1 << 4)
+#define AFE_TDM_CON1_WLEN_16BIT (1 << 8)
+#define AFE_TDM_CON1_WLEN_32BIT (2 << 8)
+#define AFE_TDM_CON1_2CH_SDATA (0 << 10)
+#define AFE_TDM_CON1_4CH_SDATA (1 << 10)
+#define AFE_TDM_CON1_8CH_SDATA (2 << 10)
+#define AFE_TDM_CON1_16_BCK_CYCLES (0 << 12)
+#define AFE_TDM_CON1_24_BCK_CYCLES (1 << 12)
+#define AFE_TDM_CON1_32_BCK_CYCLES (2 << 12)
+#define AFE_TDM_CON1_LRCK_TDM_WIDTH(x) (((x) - 1) << 24)
+
+#define MTK_AFE_I2S_CON_PHASE_SHIFT_FIX (1 << 31)
+#define MTK_AFE_I2S_CON_BCK_INVERT (1 << 29)
+#define MTK_AFE_I2S_CON_FROM_IO_MUX (1 << 28)
+#define MTK_AFE_I2S_CON_LOW_JITTER_CLOCK (1 << 12)
+#define MTK_AFE_I2S_CON_INV_LRCK (1 << 5)
+#define MTK_AFE_I2S_CON_FORMAT_I2S (1 << 3)
+#define MTK_AFE_I2S_CON_SRC_SLAVE (1 << 2)
+#define MTK_AFE_I2S_CON_WLEN_32BITS (1 << 1)
+#define MTK_AFE_I2S_CON_ENABLE (1 << 0)
+
+#define MTK_AFE_I2S_CON3_LR_SWAP (1 << 31)
+#define MTK_AFE_I2S_CON3_LOW_JITTER_CLOCK (1 << 12)
+#define MTK_AFE_I2S_CON3_RATE(x) (((x) & 0xf) << 8)
+#define MTK_AFE_I2S_CON3_INV_LRCK (1 << 5)
+#define MTK_AFE_I2S_CON3_FORMAT_I2S (1 << 3)
+#define MTK_AFE_I2S_CON3_WLEN_32BITS (1 << 1)
+#define MTK_AFE_I2S_CON3_ENABLE (1 << 0)
+
+#define MTK_AFE_I2S_CON2_LR_SWAP (1 << 31)
+#define MTK_AFE_I2S_CON2_BCK_INVERT (1 << 23)
+#define MTK_AFE_I2S_CON2_LOW_JITTER_CLOCK (1 << 12)
+#define MTK_AFE_I2S_CON2_RATE(x) (((x) & 0xf) << 8)
+#define MTK_AFE_I2S_CON2_FORMAT_I2S (1 << 3)
+#define MTK_AFE_I2S_CON2_WLEN_32BITS (1 << 1)
+#define MTK_AFE_I2S_CON2_ENABLE (1 << 0)
+
+#define MTK_AFE_I2S_CON1_LR_SWAP (1 << 31)
+#define MTK_AFE_I2S_CON1_LOW_JITTER_CLOCK (1 << 12)
+#define MTK_AFE_I2S_CON1_RATE(x) (((x) & 0xf) << 8)
+#define MTK_AFE_I2S_CON1_INV_LRCK (1 << 5)
+#define MTK_AFE_I2S_CON1_FORMAT_I2S (1 << 3)
+#define MTK_AFE_I2S_CON1_WLEN_32BITS (1 << 1)
+#define MTK_AFE_I2S_CON1_ENABLE (1 << 0)
+
+enum mtk_afe_tdm_ch_start {
+ MTK_AFE_TDM_CH_START_O30_O31 = 0,
+ MTK_AFE_TDM_CH_START_O32_O33,
+ MTK_AFE_TDM_CH_START_O34_O35,
+ MTK_AFE_TDM_CH_START_O36_O37,
+ MTK_AFE_TDM_CH_ZERO,
+};
+
+enum mtk_afe_i2s_rate {
+ MTK_AFE_I2S_RATE_8K = 0,
+ MTK_AFE_I2S_RATE_11K = 1,
+ MTK_AFE_I2S_RATE_12K = 2,
+ MTK_AFE_I2S_RATE_16K = 4,
+ MTK_AFE_I2S_RATE_22K = 5,
+ MTK_AFE_I2S_RATE_24K = 6,
+ MTK_AFE_I2S_RATE_32K = 8,
+ MTK_AFE_I2S_RATE_44K = 9,
+ MTK_AFE_I2S_RATE_48K = 10,
+ MTK_AFE_I2S_RATE_88K = 11,
+ MTK_AFE_I2S_RATE_96K = 12,
+ MTK_AFE_I2S_RATE_174K = 13,
+ MTK_AFE_I2S_RATE_192K = 14,
+};
+
+static const struct snd_pcm_hardware mtk_afe_hardware = {
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME | 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 int mtk_afe_pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
+ struct mtk_afe_io *io = &afe->ios[rtd->cpu_dai->id];
+ struct mtk_afe_memif *memif;
+ int ret;
+
+ if (io->mem[substream->stream] < 0)
+ /* memif is not specified */
+ return -ENXIO;
+ memif = &afe->memif[io->mem[substream->stream]];
+ memif->substream = substream;
+
+ snd_soc_set_runtime_hwparams(substream, &mtk_afe_hardware);
+ 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;
+ }
+
+ if (!memif->use_sram)
+ return 0;
+
+ return snd_pcm_hw_constraint_minmax(runtime,
+ SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
+ mtk_afe_hardware.period_bytes_min,
+ afe->sram_size);
+}
+
+static int mtk_afe_pcm_close(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_io *io = &afe->ios[rtd->cpu_dai->id];
+
+ afe->memif[io->mem[substream->stream]].substream = NULL;
+
+ return 0;
+}
+
+static int mtk_afe_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct mtk_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
+ struct mtk_afe_io *io = &afe->ios[rtd->cpu_dai->id];
+ struct mtk_afe_memif *memif = &afe->memif[io->mem[substream->stream]];
+ 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));
+
+ if (memif->use_sram) {
+ struct snd_dma_buffer *dma_buf = &substream->dma_buffer;
+ int size = params_buffer_bytes(params);
+
+ memif->buffer_size = size;
+ memif->phys_buf_addr = afe->sram_phy_address;
+
+ dma_buf->bytes = size;
+ dma_buf->area = (unsigned char *)afe->sram_address;
+ dma_buf->addr = afe->sram_phy_address;
+ dma_buf->dev.type = SNDRV_DMA_TYPE_DEV;
+ dma_buf->dev.dev = substream->pcm->card->dev;
+ snd_pcm_set_runtime_buffer(substream, dma_buf);
+ } else {
+ ret = snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(params));
+ if (ret < 0)
+ return ret;
+
+ memif->phys_buf_addr = substream->runtime->dma_addr;
+ memif->buffer_size = substream->runtime->dma_bytes;
+ }
+ memif->hw_ptr = 0;
+
+ /* 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);
+
+ return 0;
+}
+
+static int mtk_afe_pcm_hw_free(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_io *io = &afe->ios[rtd->cpu_dai->id];
+ struct mtk_afe_memif *memif = &afe->memif[io->mem[substream->stream]];
+
+ if (memif->use_sram)
+ return 0;
+
+ return snd_pcm_lib_free_pages(substream);
+}
+
+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_io *io = &afe->ios[rtd->cpu_dai->id];
+ struct mtk_afe_memif *memif = &afe->memif[io->mem[substream->stream]];
+
+ return bytes_to_frames(substream->runtime, memif->hw_ptr);
+}
+
+static const struct snd_pcm_ops mtk_afe_pcm_ops = {
+ .open = mtk_afe_pcm_open,
+ .close = mtk_afe_pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = mtk_afe_pcm_hw_params,
+ .hw_free = mtk_afe_pcm_hw_free,
+ .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 {
+ int rate;
+ int regvalue;
+};
+
+static const struct mtk_afe_rate mtk_afe_adda_rates[] = {
+ { .rate = 8000, .regvalue = 0 },
+ { .rate = 11025, .regvalue = 1 },
+ { .rate = 12000, .regvalue = 2 },
+ { .rate = 16000, .regvalue = 3 },
+ { .rate = 22050, .regvalue = 4 },
+ { .rate = 24000, .regvalue = 5 },
+ { .rate = 32000, .regvalue = 6 },
+ { .rate = 44100, .regvalue = 7 },
+ { .rate = 48000, .regvalue = 8 },
+};
+
+static int mtk_afe_adda_fs(u32 sample_rate)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mtk_afe_adda_rates); i++)
+ if (mtk_afe_adda_rates[i].rate == sample_rate)
+ return mtk_afe_adda_rates[i].regvalue;
+
+ return -EINVAL;
+}
+
+static const struct mtk_afe_rate mtk_afe_i2s_rates[] = {
+ { .rate = 8000, .regvalue = MTK_AFE_I2S_RATE_8K },
+ { .rate = 11025, .regvalue = MTK_AFE_I2S_RATE_11K },
+ { .rate = 12000, .regvalue = MTK_AFE_I2S_RATE_12K },
+ { .rate = 16000, .regvalue = MTK_AFE_I2S_RATE_16K },
+ { .rate = 22050, .regvalue = MTK_AFE_I2S_RATE_22K },
+ { .rate = 24000, .regvalue = MTK_AFE_I2S_RATE_24K },
+ { .rate = 32000, .regvalue = MTK_AFE_I2S_RATE_32K },
+ { .rate = 44100, .regvalue = MTK_AFE_I2S_RATE_44K },
+ { .rate = 48000, .regvalue = MTK_AFE_I2S_RATE_48K },
+ { .rate = 88000, .regvalue = MTK_AFE_I2S_RATE_88K },
+ { .rate = 96000, .regvalue = MTK_AFE_I2S_RATE_96K },
+ { .rate = 174000, .regvalue = MTK_AFE_I2S_RATE_174K },
+ { .rate = 192000, .regvalue = MTK_AFE_I2S_RATE_192K },
+};
+
+static int mtk_afe_i2s_fs(u32 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_adda_dac_out(struct mtk_afe *afe, uint32_t rate)
+{
+ u32 audio_i2s_dac = 0;
+ u32 con0, con1;
+
+ /* set dl src2 */
+ con0 = (mtk_afe_adda_fs(rate) << 28) | (0x03 << 24) | (0x03 << 11);
+
+ /* 8k or 16k voice mode */
+ if (con0 == 0 || con0 == 3)
+ con0 |= 0x01 << 5;
+
+ /* SA suggests to apply -0.3db to audio/speech path */
+ con0 = con0 | (0x01 << 1);
+ con1 = 0xf74f0000;
+
+ /* set and turn off */
+ regmap_write(afe->regmap, AFE_ADDA_DL_SRC2_CON0, con0);
+
+ regmap_write(afe->regmap, AFE_ADDA_DL_SRC2_CON1, 0xf74f0000);
+
+ audio_i2s_dac = MTK_AFE_I2S_CON1_FORMAT_I2S |
+ MTK_AFE_I2S_CON1_RATE(mtk_afe_i2s_fs(rate));
+
+ /* set and turn off */
+ regmap_write(afe->regmap, AFE_I2S_CON1, audio_i2s_dac);
+ return 0;
+}
+
+static void mtk_afe_pmic_shutdown(struct mtk_afe *afe,
+ struct snd_pcm_substream *substream)
+{
+ /* output */
+ regmap_update_bits(afe->regmap, AFE_ADDA_DL_SRC2_CON0, 1, 0);
+ regmap_update_bits(afe->regmap, AFE_I2S_CON1, 1, 0);
+
+ /* input */
+ regmap_update_bits(afe->regmap, AFE_ADDA_UL_SRC_CON0, 1, 0);
+ /* disable ADDA */
+ regmap_update_bits(afe->regmap, AFE_ADDA_UL_DL_CON0, 1, false);
+}
+
+static int mtk_afe_pmic_prepare(struct mtk_afe *afe,
+ struct snd_pcm_substream *substream)
+{
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ mtk_afe_set_adda_dac_out(afe, substream->runtime->rate);
+ regmap_update_bits(afe->regmap, AFE_ADDA_DL_SRC2_CON0, 1, 1);
+ regmap_update_bits(afe->regmap, AFE_I2S_CON1, 1, 1);
+
+ } else {
+ u32 rate = mtk_afe_i2s_fs(substream->runtime->rate);
+ u32 voice_mode = 0;
+
+ /* Use Int ADC */
+ regmap_update_bits(afe->regmap, AFE_ADDA_TOP_CON0, 1, 0);
+
+ if (rate == MTK_AFE_I2S_RATE_8K)
+ voice_mode = 0;
+ else if (rate == MTK_AFE_I2S_RATE_16K)
+ voice_mode = 1;
+ else if (rate == MTK_AFE_I2S_RATE_32K)
+ voice_mode = 2;
+ else if (rate == MTK_AFE_I2S_RATE_48K)
+ voice_mode = 3;
+
+ /* set and turn off */
+ regmap_write(afe->regmap, AFE_ADDA_UL_SRC_CON0,
+ ((voice_mode << 2) | voice_mode) << 17);
+
+ regmap_update_bits(afe->regmap, AFE_ADDA_NEWIF_CFG1,
+ 0xc00, ((voice_mode < 3) ? 1 : 3) << 10);
+
+ regmap_update_bits(afe->regmap, AFE_ADDA_UL_SRC_CON0, 1, 1);
+ }
+ /* enable ADDA */
+ regmap_update_bits(afe->regmap, AFE_ADDA_UL_DL_CON0, 1, true);
+ return 0;
+}
+
+static int mtk_afe_set_2nd_i2s(struct mtk_afe *afe, bool doublew,
+ uint32_t rate, bool bck_inv, bool slave)
+{
+ uint32_t val;
+ unsigned int fs = mtk_afe_i2s_fs(rate);
+
+ regmap_update_bits(afe->regmap, AFE_DAC_CON1, 0xf00, fs << 8);
+
+ val = MTK_AFE_I2S_CON_PHASE_SHIFT_FIX |
+ MTK_AFE_I2S_CON_FROM_IO_MUX |
+ MTK_AFE_I2S_CON_LOW_JITTER_CLOCK |
+ MTK_AFE_I2S_CON_FORMAT_I2S;
+
+ if (bck_inv)
+ val |= MTK_AFE_I2S_CON_BCK_INVERT;
+ if (slave)
+ val |= MTK_AFE_I2S_CON_SRC_SLAVE;
+ if (doublew)
+ val |= MTK_AFE_I2S_CON_WLEN_32BITS;
+
+ regmap_update_bits(afe->regmap,
+ AFE_I2S_CON, 0xfffffffe, val);
+
+ /* set output */
+ val = MTK_AFE_I2S_CON3_LOW_JITTER_CLOCK |
+ MTK_AFE_I2S_CON3_RATE(fs) |
+ MTK_AFE_I2S_CON3_FORMAT_I2S;
+
+ if (doublew)
+ val |= MTK_AFE_I2S_CON3_WLEN_32BITS;
+
+ regmap_update_bits(afe->regmap,
+ AFE_I2S_CON3, 0xfffffffe, val);
+ return 0;
+}
+
+static int mtk_afe_set_i2s(struct mtk_afe *afe, uint32_t rate)
+{
+ uint32_t val;
+ unsigned int fs = mtk_afe_i2s_fs(rate);
+
+ /* from external ADC */
+ regmap_update_bits(afe->regmap, AFE_ADDA2_TOP_CON0, 0x1, 0x1);
+
+ /* set input */
+ val = MTK_AFE_I2S_CON2_LOW_JITTER_CLOCK |
+ MTK_AFE_I2S_CON2_RATE(fs) |
+ MTK_AFE_I2S_CON2_FORMAT_I2S;
+
+ regmap_update_bits(afe->regmap,
+ AFE_I2S_CON2, 0xfffffffe, val);
+
+ /* set output */
+ val = MTK_AFE_I2S_CON1_LOW_JITTER_CLOCK |
+ MTK_AFE_I2S_CON1_RATE(fs) |
+ MTK_AFE_I2S_CON1_FORMAT_I2S;
+
+ regmap_update_bits(afe->regmap,
+ AFE_I2S_CON1, 0xfffffffe, val);
+ return 0;
+}
+
+static void mtk_afe_set_2nd_i2s_enable(struct mtk_afe *afe,
+ uint32_t rate, bool enable)
+{
+ int val;
+
+ regmap_read(afe->regmap, AFE_I2S_CON, &val);
+ if (!!(val & MTK_AFE_I2S_CON_ENABLE) == enable)
+ return; /* must skip soft reset */
+
+ /* 2nd I2S soft reset begin */
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 2, 2);
+
+ /* input */
+ regmap_update_bits(afe->regmap, AFE_I2S_CON, 1, enable);
+
+ /* output */
+ regmap_update_bits(afe->regmap, AFE_I2S_CON3, 1, enable);
+
+ /* 2nd I2S soft reset end */
+ udelay(1);
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 2, 0);
+}
+
+static void mtk_afe_set_i2s_enable(struct mtk_afe *afe,
+ uint32_t rate, bool enable)
+{
+ int val;
+
+ regmap_read(afe->regmap, AFE_I2S_CON2, &val);
+ if (!!(val & MTK_AFE_I2S_CON2_ENABLE) == enable)
+ return; /* must skip soft reset */
+
+ /* I2S soft reset begin */
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 4, 4);
+
+ /* input */
+ regmap_update_bits(afe->regmap, AFE_I2S_CON2, 1, enable);
+
+ /* output */
+ regmap_update_bits(afe->regmap, AFE_I2S_CON1, 1, enable);
+
+ /* I2S soft reset end */
+ udelay(1);
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 4, 0);
+}
+
+static void mtk_afe_i2s_shutdown(struct mtk_afe *afe,
+ struct snd_pcm_substream *substream)
+{
+ mtk_afe_set_i2s_enable(afe, substream->runtime->rate, false);
+}
+
+static int mtk_afe_i2s_prepare(struct mtk_afe *afe,
+ struct snd_pcm_substream *substream)
+{
+ /* config I2S */
+ mtk_afe_set_i2s(afe, substream->runtime->rate);
+ mtk_afe_set_i2s_enable(afe, substream->runtime->rate, true);
+
+ return 0;
+}
+
+static void mtk_afe_i2s2_shutdown(struct mtk_afe *afe,
+ struct snd_pcm_substream *substream)
+{
+ mtk_afe_set_2nd_i2s_enable(afe, substream->runtime->rate, false);
+}
+
+static int mtk_afe_i2s2_prepare(struct mtk_afe *afe,
+ struct snd_pcm_substream *substream)
+{
+ /* config I2S */
+ mtk_afe_set_2nd_i2s(afe, false, substream->runtime->rate, false, false);
+ mtk_afe_set_2nd_i2s_enable(afe, substream->runtime->rate, true);
+ return 0;
+}
+
+static int mtk_afe_hdmi_start(struct mtk_afe *afe,
+ struct snd_pcm_substream *substream)
+{
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON0,
+ (1 << 20) | (1 << 21), 0);
+
+ /* enable Out control */
+ regmap_update_bits(afe->regmap, AFE_HDMI_OUT_CON0, 1, 1);
+
+ /* enable tdm */
+ regmap_update_bits(afe->regmap, AFE_TDM_CON1, 1, 1);
+
+ return 0;
+}
+
+static void mtk_afe_hdmi_pause(struct mtk_afe *afe,
+ struct snd_pcm_substream *substream)
+{
+ /* disable tdm */
+ regmap_update_bits(afe->regmap, AFE_TDM_CON1, 1, 0);
+
+ /* disable Out control */
+ regmap_update_bits(afe->regmap, AFE_HDMI_OUT_CON0, 1, 0);
+
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON0,
+ (1 << 20) | (1 << 21), (1 << 20) | (1 << 21));
+}
+
+static int mtk_afe_hdmi_prepare(struct mtk_afe *afe,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ u32 val;
+
+ val = AFE_TDM_CON1_BCK_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_TDM_WIDTH(32);
+
+ regmap_update_bits(afe->regmap, AFE_TDM_CON1, ~1, val);
+
+ /* set tdm2 config */
+ switch (runtime->channels) {
+ case 7:
+ case 8:
+ val |= MTK_AFE_TDM_CH_START_O30_O31;
+ val |= (MTK_AFE_TDM_CH_START_O32_O33 << 4);
+ val |= (MTK_AFE_TDM_CH_START_O34_O35 << 8);
+ val |= (MTK_AFE_TDM_CH_START_O36_O37 << 12);
+ break;
+ case 5:
+ case 6:
+ val |= MTK_AFE_TDM_CH_START_O30_O31;
+ val |= (MTK_AFE_TDM_CH_START_O32_O33 << 4);
+ val |= (MTK_AFE_TDM_CH_START_O34_O35 << 8);
+ val |= (MTK_AFE_TDM_CH_ZERO << 12);
+ break;
+ case 3:
+ case 4:
+ val |= MTK_AFE_TDM_CH_START_O30_O31;
+ val |= (MTK_AFE_TDM_CH_START_O32_O33 << 4);
+ val |= (MTK_AFE_TDM_CH_ZERO << 8);
+ val |= (MTK_AFE_TDM_CH_ZERO << 12);
+ break;
+ case 1:
+ case 2:
+ val |= MTK_AFE_TDM_CH_START_O30_O31;
+ val |= (MTK_AFE_TDM_CH_ZERO << 4);
+ val |= (MTK_AFE_TDM_CH_ZERO << 8);
+ val |= (MTK_AFE_TDM_CH_ZERO << 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_set_connections(struct mtk_afe *afe, struct mtk_afe_io *io)
+{
+ int i, ret;
+
+ for (i = 0; i < io->num_connections; i++) {
+ ret = mtk_afe_interconn_connect(afe, io->connections[i * 2],
+ io->connections[i * 2 + 1],
+ 0);
+ if (ret) {
+ dev_err(afe->dev, "Cannot create connection %d <-> %d\n",
+ io->connections[i * 2],
+ io->connections[i * 2 + 1]);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+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 mtk_afe_io *io = &afe->ios[rtd->cpu_dai->id];
+ int ret;
+
+ dev_dbg(afe->dev, "%s\n", __func__);
+
+ if (dai->active)
+ return 0;
+
+ ret = mtk_set_connections(afe, io);
+ if (ret)
+ return ret;
+
+ dev_dbg(afe->dev, "enabling io %s\n", io->data->name);
+ if (io->m_ck) {
+ ret = clk_prepare_enable(io->m_ck);
+ if (ret) {
+ dev_err(afe->dev, "Failed to enable m_ck\n");
+ return ret;
+ }
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON0,
+ (1 << 8) | (1 << 9), 0);
+ }
+
+ if (io->b_ck) {
+ ret = clk_prepare_enable(io->b_ck);
+ if (ret) {
+ dev_err(afe->dev, "Failed to enable b_ck\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+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_io *io = &afe->ios[rtd->cpu_dai->id];
+
+ dev_dbg(afe->dev, "%s\n", __func__);
+
+ if (dai->active)
+ return;
+
+ if (io->data->shutdown)
+ io->data->shutdown(afe, substream);
+
+ if (io->m_ck) {
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON0,
+ (1 << 8) | (1 << 9),
+ (1 << 8) | (1 << 9));
+ clk_disable_unprepare(io->m_ck);
+ }
+ if (io->b_ck)
+ clk_disable_unprepare(io->b_ck);
+ /* disable AFE */
+ regmap_update_bits(afe->regmap, AFE_DAC_CON0, 1, 0);
+}
+
+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_io *io = &afe->ios[rtd->cpu_dai->id];
+ struct mtk_afe_memif *memif = &afe->memif[io->mem[substream->stream]];
+ unsigned int mono;
+ int sample_rate = params_rate(params);
+ int fs_shift = memif->data->fs_shift;
+ u32 val;
+
+ /* set channel */
+ if (memif->data->mono_shift >= 0) {
+ 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 (fs_shift < 0)
+ return 0;
+ if (memif->data->id == MTK_AFE_MEMIF_DAI ||
+ memif->data->id == MTK_AFE_MEMIF_MOD_DAI) {
+ if (sample_rate == 8000)
+ val = 0;
+ else if (sample_rate == 16000)
+ val = 1;
+ else if (sample_rate == 32000)
+ val = 2;
+ else
+ return -EINVAL;
+ if (memif->data->id == MTK_AFE_MEMIF_DAI)
+ regmap_update_bits(afe->regmap, AFE_DAC_CON0,
+ 0x3 << fs_shift, val << fs_shift);
+ else
+ regmap_update_bits(afe->regmap, AFE_DAC_CON1,
+ 0x3 << fs_shift, val << fs_shift);
+
+ } else {
+ regmap_update_bits(afe->regmap, AFE_DAC_CON1,
+ 0xf << fs_shift,
+ mtk_afe_i2s_fs(sample_rate) << fs_shift);
+ }
+
+ return 0;
+}
+
+static int mtk_afe_dais_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);
+ struct mtk_afe_io *io = &afe->ios[rtd->cpu_dai->id];
+ int ret;
+
+ dev_dbg(afe->dev, "%s: %d\n", __func__, substream->runtime->rate);
+
+ if (io->m_ck) {
+ ret = clk_set_rate(io->m_ck, runtime->rate * 256);
+ if (ret) {
+ dev_err(afe->dev, "Failed to set m_ck rate\n");
+ return ret;
+ }
+ }
+
+ if (io->b_ck) {
+ ret = clk_set_rate(io->b_ck, runtime->rate *
+ runtime->channels * 32 * 16);
+ if (ret) {
+ dev_err(afe->dev, "Failed to set b_ck rate\n");
+ return ret;
+ }
+ }
+
+ if (io->data->prepare)
+ ret = io->data->prepare(afe, substream);
+
+ /* enable AFE */
+ regmap_update_bits(afe->regmap, AFE_DAC_CON0, 1, 1);
+ return 0;
+}
+
+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_io *io = &afe->ios[rtd->cpu_dai->id];
+ struct mtk_afe_memif *memif = &afe->memif[io->mem[substream->stream]];
+ unsigned int counter = runtime->period_size;
+ int ret;
+ int enable_shift = memif->data->enable_shift;
+
+ dev_info(afe->dev, "%s %s cmd=%d\n", __func__, memif->data->name, cmd);
+
+ if (!memif->irqdata) {
+ dev_err(afe->dev, "IRQ for memif %d is not described\n",
+ rtd->cpu_dai->id);
+ return -ENXIO;
+ }
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ if (enable_shift >= 0)
+ regmap_update_bits(afe->regmap, AFE_DAC_CON0,
+ 1 << enable_shift, 0xffffffff);
+
+ /* set irq counter */
+ regmap_update_bits(afe->regmap,
+ memif->irqdata->reg_cnt,
+ 0x3ffff << memif->irqdata->cnt_shift,
+ counter << memif->irqdata->cnt_shift);
+
+ /* set irq fs */
+ if (memif->irqdata->fs_shift >= 0)
+ regmap_update_bits(afe->regmap,
+ AFE_IRQ_MCU_CON,
+ 0xf << memif->irqdata->fs_shift,
+ mtk_afe_i2s_fs(runtime->rate) <<
+ memif->irqdata->fs_shift);
+ /* enable interrupt */
+ regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CON,
+ 1 << memif->irqdata->en_shift,
+ 1 << memif->irqdata->en_shift);
+
+ if (io->data->start) {
+ ret = io->data->start(afe, substream);
+ if (ret)
+ return ret;
+ }
+ return 0;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ if (io->data->pause)
+ io->data->pause(afe, substream);
+
+ if (enable_shift >= 0)
+ regmap_update_bits(afe->regmap, AFE_DAC_CON0,
+ 1 << enable_shift, 0);
+ /* disable interrupt */
+ regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CON,
+ 1 << memif->irqdata->en_shift,
+ 0 << memif->irqdata->en_shift);
+ /* and clear pending IRQ */
+ regmap_write(afe->regmap, AFE_IRQ_CLR,
+ 1 << memif->irqdata->clr_shift);
+ memif->hw_ptr = 0;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+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,
+ .prepare = mtk_afe_dais_prepare,
+ .trigger = mtk_afe_dais_trigger,
+};
+
+static const struct mtk_afe_io_data mtk_afe_io_data[MTK_AFE_IO_NUM] = {
+ [MTK_AFE_IO_PMIC] = {
+ .num = MTK_AFE_IO_PMIC,
+ .name = "pmic",
+ .shutdown = mtk_afe_pmic_shutdown,
+ .prepare = mtk_afe_pmic_prepare,
+ },
+ [MTK_AFE_IO_I2S] = {
+ .num = MTK_AFE_IO_I2S,
+ .name = "i2s",
+ .shutdown = mtk_afe_i2s_shutdown,
+ .prepare = mtk_afe_i2s_prepare,
+ },
+ [MTK_AFE_IO_2ND_I2S] = {
+ .num = MTK_AFE_IO_2ND_I2S,
+ .name = "i2s2",
+ .shutdown = mtk_afe_i2s2_shutdown,
+ .prepare = mtk_afe_i2s2_prepare,
+ },
+ [MTK_AFE_IO_HDMI] = {
+ .num = MTK_AFE_IO_HDMI,
+ .name = "hdmi",
+ .prepare = mtk_afe_hdmi_prepare,
+ .start = mtk_afe_hdmi_start,
+ .pause = mtk_afe_hdmi_pause,
+ },
+};
+
+static struct snd_soc_dai_driver mtk_afe_pcm_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_dai_ops,
+ .symmetric_rates = 1,
+ }, {
+ .name = "2nd I2S",
+ .id = MTK_AFE_IO_2ND_I2S,
+ .playback = {
+ .stream_name = "2nd I2S Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "2nd I2S Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = &mtk_afe_dai_ops,
+ .symmetric_rates = 1,
+ }, {
+ .name = "HDMI",
+ .id = MTK_AFE_IO_HDMI,
+ .playback = {
+ .stream_name = "HDMI 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_dai_ops,
+ }, {
+ .name = "PMIC",
+ .id = MTK_AFE_IO_PMIC,
+ .playback = {
+ .stream_name = "PMIC Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "PMIC Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = &mtk_afe_dai_ops,
+ },
+};
+
+static const struct snd_soc_component_driver mtk_afe_pcm_dai_component = {
+ .name = "mtk-afe-pcm-dai",
+};
+
+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_irq_data irq_data[MTK_AFE_IRQ_NUM] = {
+ [MTK_AFE_IRQ_1] = {
+ .reg_cnt = AFE_IRQ_CNT1,
+ .cnt_shift = 0,
+ .en_shift = 0,
+ .fs_shift = 4,
+ .clr_shift = 0,
+ },
+ [MTK_AFE_IRQ_2] = {
+ .reg_cnt = AFE_IRQ_CNT2,
+ .cnt_shift = 0,
+ .en_shift = 1,
+ .fs_shift = 8,
+ .clr_shift = 1,
+ },
+ [MTK_AFE_IRQ_3] = {
+ .reg_cnt = AFE_IRQ_CNT1,
+ .cnt_shift = 20,
+ .en_shift = 2,
+ .fs_shift = 16,
+ .clr_shift = 2,
+ },
+ [MTK_AFE_IRQ_4] = {
+ .reg_cnt = AFE_IRQ_CNT2,
+ .cnt_shift = 20,
+ .en_shift = 3,
+ .fs_shift = 20,
+ .clr_shift = 3,
+ },
+ [MTK_AFE_IRQ_5] = {
+ .reg_cnt = AFE_IRQ_CNT5,
+ .cnt_shift = 0,
+ .en_shift = 12,
+ .fs_shift = -1,
+ .clr_shift = 4,
+ },
+ [MTK_AFE_IRQ_7] = {
+ .reg_cnt = AFE_IRQ_CNT7,
+ .cnt_shift = 0,
+ .en_shift = 14,
+ .fs_shift = 24,
+ .clr_shift = 6,
+ },
+};
+
+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,
+ }, {
+ .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,
+ }, {
+ .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,
+ }, {
+ .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,
+ }, {
+ .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,
+ }, {
+ .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,
+ }, {
+ .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,
+ },
+};
+
+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, hw_ptr;
+ 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 (!memif->irqdata)
+ continue;
+ if (!(reg_value & (1 << memif->irqdata->clr_shift)))
+ continue;
+
+ 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;
+ }
+ memif->hw_ptr = hw_ptr - memif->phys_buf_addr;
+ 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);
+
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON0, 1 << 2, 1 << 2);
+
+ 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, 1 << 2, 0);
+
+ /* set O3/O4 16bits */
+ regmap_update_bits(afe->regmap, AFE_CONN_24BIT, (1 << 3) | (1 << 4), 0);
+
+ /* unmask all IRQs */
+ regmap_update_bits(afe->regmap, AFE_IRQ_MCU_EN, 0xff, 0xff);
+ 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]);
+ }
+ }
+ afe->ios[MTK_AFE_IO_2ND_I2S].m_ck = afe->clocks[MTK_CLK_I2S0_M];
+ afe->ios[MTK_AFE_IO_I2S].m_ck = afe->clocks[MTK_CLK_I2S1_M];
+ afe->ios[MTK_AFE_IO_HDMI].m_ck = afe->clocks[MTK_CLK_I2S3_M];
+ afe->ios[MTK_AFE_IO_HDMI].b_ck = afe->clocks[MTK_CLK_I2S3_B];
+
+ clk_set_rate(afe->clocks[MTK_CLK_BCK0], 22579200);
+ clk_set_rate(afe->clocks[MTK_CLK_BCK1], 24576000);
+ return 0;
+}
+
+static int mtk_afe_parse_memif(struct mtk_afe *afe, struct device_node *np,
+ const char *propname, int *mem)
+{
+ struct mtk_afe_memif *memif;
+ int ret;
+ u32 val;
+ static bool use_sram;
+ *mem = -1;
+ ret = of_property_read_u32_index(np, propname, 0, &val);
+ if (ret)
+ /* to be check later since we may have only play or capture */
+ return 0;
+ if (val > MTK_AFE_MEMIF_NUM) {
+ dev_err(afe->dev, "invalid memif %d\n", val);
+ return -EINVAL;
+ }
+ *mem = val;
+ memif = &afe->memif[val];
+
+ ret = of_property_read_u32_index(np, propname, 1, &val);
+ if (ret)
+ return ret;
+ if (val >= MTK_AFE_IRQ_NUM) {
+ dev_err(afe->dev, "invalid mem irq %d\n", val);
+ return -EINVAL;
+ }
+ memif->irqdata = &irq_data[val];
+
+ ret = of_property_read_u32_index(np, propname, 2, &val);
+ if (ret)
+ return ret;
+ if (val && use_sram)
+ return -EINVAL; /* only one memif can use SRAM */
+ memif->use_sram = val ? true : false;
+ use_sram = memif->use_sram;
+ return 0;
+}
+
+static int mtk_afe_init_subnode(struct mtk_afe *afe, struct device_node *np)
+{
+ struct mtk_afe_io *io;
+ u32 val;
+ int ret, n, i;
+
+ ret = of_property_read_u32(np, "io", &val);
+ if (ret)
+ return ret;
+ if (val >= MTK_AFE_IO_NUM) {
+ dev_err(afe->dev, "invalid io %d\n", val);
+ return -EINVAL;
+ }
+ io = &afe->ios[val];
+
+ n = of_property_count_u32_elems(np, "connections");
+ if (n <= 0)
+ return n;
+ io->connections = devm_kzalloc(afe->dev, n * sizeof(u32),
+ GFP_KERNEL);
+ if (!io->connections)
+ return -ENOMEM;
+ io->num_connections = n / 2;
+ ret = of_property_read_u32_array(np, "connections", io->connections,
+ n);
+ if (ret)
+ return ret;
+ for (i = 0; i < io->num_connections; i++) {
+ dev_dbg(afe->dev, "connection %d: %d -> %d\n", i,
+ io->connections[i * 2],
+ io->connections[i * 2 + 1]);
+ }
+
+ ret = mtk_afe_parse_memif(afe, np, "mem-interface-playback", io->mem);
+ if (ret)
+ return ret;
+ ret = mtk_afe_parse_memif(afe, np, "mem-interface-capture",
+ io->mem + 1);
+ if (ret)
+ return ret;
+ if (io->mem[0] < 0 && io->mem[1] < 0) {
+ dev_err(afe->dev, "no mem interface given\n");
+ return -EINVAL;
+ }
+ 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 device_node *dainode;
+ struct resource *res;
+
+ 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);
+
+ /* get SRAM base */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ afe->sram_address = devm_ioremap_resource(&pdev->dev, res);
+ if (!IS_ERR(afe->sram_address)) {
+ afe->sram_phy_address = res->start;
+ afe->sram_size = resource_size(res);
+ }
+
+ /* 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];
+
+ for (i = 0; i < MTK_AFE_IO_NUM; i++)
+ afe->ios[i].data = &mtk_afe_io_data[i];
+
+ for_each_child_of_node(pdev->dev.of_node, dainode) {
+ ret = mtk_afe_init_subnode(afe, dainode);
+ if (ret)
+ return ret;
+ }
+
+ 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;
+
+ dev_info(&pdev->dev, "MTK AFE driver initialized.\n");
+ return 0;
+
+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);
+ 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", },
+ { }
+};
+
+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",
+ .owner = THIS_MODULE,
+ .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 <koro.chen at mediatek.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(of, mtk_afe_pcm_dt_match);
--
1.8.1.1.dirty
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