[PATCH 1/3] ASoC: mediatek: Add AFE platform driver

Koro Chen
2015-06-10T14:24:34Z

This is the DPCM based platform driver of AFE (Audio Front End) unit.

Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
.../devicetree/bindings/sound/mtk-afe-pcm.txt | 45 +
sound/soc/Kconfig | 1 +
sound/soc/Makefile | 1 +
sound/soc/mediatek/Kconfig | 9 +
sound/soc/mediatek/Makefile | 2 +
sound/soc/mediatek/mtk-afe-common.h | 109 ++
sound/soc/mediatek/mtk-afe-pcm.c | 1233 ++++++++++++++++++++
7 files changed, 1400 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/mtk-afe-pcm.txt
create mode 100644 sound/soc/mediatek/Kconfig
create mode 100644 sound/soc/mediatek/Makefile
create mode 100644 sound/soc/mediatek/mtk-afe-common.h
create mode 100644 sound/soc/mediatek/mtk-afe-pcm.c

diff --git a/Documentation/devicetree/bindings/sound/mtk-afe-pcm.txt b/Documentation/devicetree/bindings/sound/mtk-afe-pcm.txt
new file mode 100644
index 0000000..e302c7f
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/mtk-afe-pcm.txt
@@ -0,0 +1,45 @@
+Mediatek AFE PCM controller
+
+Required properties:
+- compatible = "mediatek,mt8173-afe-pcm";
+- reg: register location and size
+- interrupts: Should contain AFE interrupt
+- clock-names: should have these clock names:
+ "infra_sys_audio_clk",
+ "top_pdn_audio",
+ "top_pdn_aud_intbus",
+ "bck0",
+ "bck1",
+ "i2s0_m",
+ "i2s1_m",
+ "i2s2_m",
+ "i2s3_m",
+ "i2s3_b";
+
+Example:
+
+ afe: mt8173-afe-pcm at 11220000 {
+ compatible = "mediatek,mt8173-afe-pcm";
+ reg = <0 0x11220000 0 0x1000>;
+ interrupts = <GIC_SPI 134 IRQ_TYPE_EDGE_FALLING>;
+ clocks = <&infracfg INFRA_AUDIO>,
+ <&topckgen TOP_AUDIO_SEL>,
+ <&topckgen TOP_AUD_INTBUS_SEL>,
+ <&topckgen TOP_APLL1_DIV0>,
+ <&topckgen TOP_APLL2_DIV0>,
+ <&topckgen TOP_I2S0_M_CK_SEL>,
+ <&topckgen TOP_I2S1_M_CK_SEL>,
+ <&topckgen TOP_I2S2_M_CK_SEL>,
+ <&topckgen TOP_I2S3_M_CK_SEL>,
+ <&topckgen TOP_I2S3_B_CK_SEL>;
+ clock-names = "infra_sys_audio_clk",
+ "top_pdn_audio",
+ "top_pdn_aud_intbus",
+ "bck0",
+ "bck1",
+ "i2s0_m",
+ "i2s1_m",
+ "i2s2_m",
+ "i2s3_m",
+ "i2s3_b";
+ };
diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig
index 3ba52da..cc1b718 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/qcom/Kconfig"
diff --git a/sound/soc/Makefile b/sound/soc/Makefile
index 974ba70..e552633 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..38630d4
--- /dev/null
+++ b/sound/soc/mediatek/Kconfig
@@ -0,0 +1,9 @@
+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..5f27cc7
--- /dev/null
+++ b/sound/soc/mediatek/Makefile
@@ -0,0 +1,2 @@
+# MTK Platform Support
+obj-$(CONFIG_SND_SOC_MEDIATEK) += mtk-afe-pcm.o
diff --git a/sound/soc/mediatek/mtk-afe-common.h b/sound/soc/mediatek/mtk-afe-common.h
new file mode 100644
index 0000000..a88b175
--- /dev/null
+++ b/sound/soc/mediatek/mtk-afe-common.h
@@ -0,0 +1,109 @@
+/*
+ * mtk_afe_common.h -- Mediatek audio driver common definitions
+ *
+ * Copyright (c) 2015 MediaTek Inc.
+ * Author: Koro Chen <koro.chen@mediatek.com>
+ * Sascha Hauer <s.hauer@pengutronix.de>
+ * Hidalgo Huang <hidalgo.huang@mediatek.com>
+ * Ir Lian <ir.lian@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.
+ */
+
+#ifndef _MTK_AFE_COMMON_H_
+#define _MTK_AFE_COMMON_H_
+
+#include <linux/clk.h>
+#include <linux/regmap.h>
+
+enum {
+ MTK_AFE_MEMIF_DL1,
+ MTK_AFE_MEMIF_DL2,
+ MTK_AFE_MEMIF_VUL,
+ MTK_AFE_MEMIF_DAI,
+ MTK_AFE_MEMIF_AWB,
+ MTK_AFE_MEMIF_MOD_DAI,
+ MTK_AFE_MEMIF_HDMI,
+ MTK_AFE_MEMIF_NUM,
+ MTK_AFE_IO_MOD_PCM1 = MTK_AFE_MEMIF_NUM,
+ MTK_AFE_IO_MOD_PCM2,
+ MTK_AFE_IO_PMIC,
+ MTK_AFE_IO_I2S,
+ MTK_AFE_IO_2ND_I2S,
+ MTK_AFE_IO_HW_GAIN1,
+ MTK_AFE_IO_HW_GAIN2,
+ MTK_AFE_IO_MRG_O,
+ MTK_AFE_IO_MRG_I,
+ MTK_AFE_IO_DAIBT,
+ MTK_AFE_IO_HDMI,
+};
+
+enum {
+ MTK_AFE_IRQ_1,
+ MTK_AFE_IRQ_2,
+ MTK_AFE_IRQ_3,
+ MTK_AFE_IRQ_4,
+ MTK_AFE_IRQ_5,
+ MTK_AFE_IRQ_6,
+ MTK_AFE_IRQ_7,
+ MTK_AFE_IRQ_8,
+ MTK_AFE_IRQ_NUM,
+};
+
+enum {
+ MTK_CLK_INFRASYS_AUD,
+ MTK_CLK_TOP_PDN_AUD,
+ MTK_CLK_TOP_PDN_AUD_BUS,
+ MTK_CLK_I2S0_M,
+ MTK_CLK_I2S1_M,
+ MTK_CLK_I2S2_M,
+ MTK_CLK_I2S3_M,
+ MTK_CLK_I2S3_B,
+ MTK_CLK_BCK0,
+ MTK_CLK_BCK1,
+ MTK_CLK_NUM
+};
+
+struct mtk_afe;
+struct snd_pcm_substream;
+
+struct mtk_afe_memif_data {
+ int id;
+ const char *name;
+ int reg_ofs_base;
+ int reg_ofs_cur;
+ int fs_shift;
+ int mono_shift;
+ int enable_shift;
+ int irq_reg_cnt;
+ int irq_cnt_shift;
+ int irq_en_shift;
+ int irq_fs_shift;
+ int irq_clr_shift;
+};
+
+struct mtk_afe_memif {
+ unsigned int phys_buf_addr;
+ int buffer_size;
+ unsigned int hw_ptr; /* Previous IRQ's HW ptr */
+ struct snd_pcm_substream *substream;
+ const struct mtk_afe_memif_data *data;
+ const struct mtk_afe_irq_data *irqdata;
+};
+
+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];
+};
+#endif
diff --git a/sound/soc/mediatek/mtk-afe-pcm.c b/sound/soc/mediatek/mtk-afe-pcm.c
new file mode 100644
index 0000000..48cb3dd
--- /dev/null
+++ b/sound/soc/mediatek/mtk-afe-pcm.c
@@ -0,0 +1,1233 @@
+/*
+ * Mediatek ALSA SoC AFE platform driver
+ *
+ * Copyright (c) 2015 MediaTek Inc.
+ * Author: Koro Chen <koro.chen@mediatek.com>
+ * Sascha Hauer <s.hauer@pengutronix.de>
+ * Hidalgo Huang <hidalgo.huang@mediatek.com>
+ * Ir Lian <ir.lian@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"
+
+/*****************************************************************************
+ * 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_CONN1 0x0024
+#define AFE_CONN2 0x0028
+#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_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_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_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_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 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];
+
+ return bytes_to_frames(substream->runtime, memif->hw_ptr);
+}
+
+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_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; /* must skip soft reset */
+
+ /* I2S soft reset begin */
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 0x4, 0x4);
+
+ /* input */
+ regmap_update_bits(afe->regmap, AFE_I2S_CON2, 0x1, !!enable);
+
+ /* output */
+ regmap_update_bits(afe->regmap, AFE_I2S_CON1, 0x1, !!enable);
+
+ /* I2S soft reset end */
+ udelay(1);
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 0x4, 0);
+}
+
+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;
+ }
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON0,
+ AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M, 0);
+ }
+
+ 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) {
+ regmap_update_bits(afe->regmap, AUDIO_TOP_CON0,
+ AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M,
+ AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M);
+ 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);
+ 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);
+ mtk_afe_dais_disable_clks(afe, afe->clocks[MTK_CLK_I2S1_M], NULL);
+
+ /* disable AFE */
+ regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0);
+}
+
+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);
+ /* 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]);
+
+ /* disable AFE */
+ regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0);
+}
+
+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_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);
+ 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 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;
+
+ 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);
+
+ /* 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_prepare(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);
+
+ /* enable AFE */
+ regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0x1);
+ 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_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);
+ memif->hw_ptr = 0;
+ 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,
+ .prepare = mtk_afe_dais_prepare,
+ .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 struct snd_soc_dai_driver mtk_afe_pcm_dais[] = {
+ /* FE DAIs: memory intefaces to CPU */
+ {
+ .name = "DL1", /* downlink 1 */
+ .id = MTK_AFE_MEMIF_DL1,
+ .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,
+ .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,
+ .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("I17 Switch", AFE_CONN7, 30, 1, 0),
+};
+
+static const struct snd_kcontrol_new mtk_afe_o10_mix[] = {
+ SOC_DAPM_SINGLE_AUTODISABLE("I18 Switch", AFE_CONN8, 0, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget mtk_afe_pcm_widgets[] = {
+ /* Backend DAIs */
+ SND_SOC_DAPM_AIF_IN("I2S Capture", NULL, 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("I2S Playback", NULL, 0, SND_SOC_NOPM, 0, 0),
+
+ /* inter-connections */
+ SND_SOC_DAPM_MIXER("I05", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_MIXER("I06", SND_SOC_NOPM, 0, 0, NULL, 0),
+ 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"},
+ {"I17", NULL, "I2S Capture"},
+ {"I18", NULL, "I2S Capture"},
+ { "O03", "I05 Switch", "I05" },
+ { "O04", "I06 Switch", "I06" },
+ { "O09", "I17 Switch", "I17" },
+ { "O10", "I18 Switch", "I18" },
+};
+
+static const struct snd_soc_dapm_widget mtk_afe_hdmi_widgets[] = {
+ /* Backend DAIs */
+ SND_SOC_DAPM_AIF_OUT("HDMIO Playback", NULL, 0, SND_SOC_NOPM, 0, 0),
+};
+
+static const struct snd_soc_dapm_route mtk_afe_hdmi_routes[] = {
+ {"HDMIO Playback", NULL, "HDMI"},
+};
+
+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_widgets = mtk_afe_hdmi_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(mtk_afe_hdmi_widgets),
+ .dapm_routes = mtk_afe_hdmi_routes,
+ .num_dapm_routes = ARRAY_SIZE(mtk_afe_hdmi_routes),
+};
+
+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,
+ }, {
+ .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,
+ }, {
+ .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,
+ }, {
+ .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,
+ }, {
+ .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,
+ }, {
+ .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,
+ }, {
+ .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,
+ },
+};
+
+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, &reg_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;
+
+ 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);
+
+ /* 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);
+ 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;
+
+ 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);
+ 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@mediatek.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(of, mtk_afe_pcm_dt_match);
--
1.8.1.1.dirty