[PATCH 1/2] ASoC: imx-akcodec: Add imx-akcodec machine driver
Shengjiu Wang
shengjiu.wang at nxp.com
Fri Apr 23 07:51:46 CEST 2021
Add machine driver for i.MX boards that have
AK4458/AK5558/AK4497/AK5552 DAC/ADC attached to
SAI interface.
Signed-off-by: Shengjiu Wang <shengjiu.wang at nxp.com>
Signed-off-by: Mihai Serban <mihai.serban at nxp.com>
Signed-off-by: Cosmin-Gabriel Samoila <cosmin.samoila at nxp.com>
Signed-off-by: Viorel Suman <viorel.suman at nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta at nxp.com>
Signed-off-by: Adrian Alonso <adrian.alonso at nxp.com>
---
sound/soc/fsl/Kconfig | 12 +
sound/soc/fsl/Makefile | 2 +
sound/soc/fsl/imx-akcodec.c | 868 ++++++++++++++++++++++++++++++++++++
3 files changed, 882 insertions(+)
create mode 100644 sound/soc/fsl/imx-akcodec.c
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 0917d65d6921..5720ad36494f 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -350,6 +350,18 @@ config SND_SOC_IMX_RPMSG
Say Y if you want to add support for SoC audio on an i.MX board with
a rpmsg devices.
+config SND_SOC_IMX_AKCODEC
+ tristate "SoC Audio support for i.MX boards with AKCODEC"
+ depends on OF && I2C
+ select SND_SOC_AK4458
+ select SND_SOC_AK5558
+ select SND_SOC_IMX_PCM_DMA
+ select SND_SOC_FSL_SAI
+ help
+ SoC Audio support for i.MX boards with AK4458/AK4497/AK5558/AK5552
+ Say Y if you want to add support for SoC audio on an i.MX board with
+ an AK4458/AK4497/AK5558/AK5552 DAC/ADC.
+
endif # SND_IMX_SOC
endmenu
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index f146ce464acd..ee7caed0c758 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -71,6 +71,7 @@ snd-soc-imx-spdif-objs := imx-spdif.o
snd-soc-imx-audmix-objs := imx-audmix.o
snd-soc-imx-hdmi-objs := imx-hdmi.o
snd-soc-imx-rpmsg-objs := imx-rpmsg.o
+snd-soc-imx-akcodec-objs := imx-akcodec.o
obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o
@@ -79,3 +80,4 @@ obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
obj-$(CONFIG_SND_SOC_IMX_AUDMIX) += snd-soc-imx-audmix.o
obj-$(CONFIG_SND_SOC_IMX_HDMI) += snd-soc-imx-hdmi.o
obj-$(CONFIG_SND_SOC_IMX_RPMSG) += snd-soc-imx-rpmsg.o
+obj-$(CONFIG_SND_SOC_IMX_AKCODEC) += snd-soc-imx-akcodec.o
diff --git a/sound/soc/fsl/imx-akcodec.c b/sound/soc/fsl/imx-akcodec.c
new file mode 100644
index 000000000000..606365f79a54
--- /dev/null
+++ b/sound/soc/fsl/imx-akcodec.c
@@ -0,0 +1,868 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright 2017-2021 NXP
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/gpio/consumer.h>
+#include <linux/of_device.h>
+#include <linux/i2c.h>
+#include <linux/of_gpio.h>
+#include <linux/clk.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+#include <sound/pcm.h>
+#include <sound/soc-dapm.h>
+
+#include "fsl_sai.h"
+
+#define MAX_CODECS 2
+
+enum codec_type {
+ CODEC_AK5558 = 1,
+ CODEC_AK4458,
+ CODEC_AK4497,
+ CODEC_AK5552,
+};
+
+/*
+ * Mapping LRCK fs and frame width, table 3 & 4 in datasheet
+ * @rmin: min rate
+ * @rmax: max rate
+ * @wmin: min frame ratio
+ * @wmax: max frame ratio
+ */
+struct imx_akcodec_fs_mul {
+ unsigned int rmin;
+ unsigned int rmax;
+ unsigned int wmin;
+ unsigned int wmax;
+};
+
+/*
+ * Mapping TDM mode and frame width
+ */
+struct imx_akcodec_tdm_fs_mul {
+ unsigned int min;
+ unsigned int max;
+ unsigned int mul;
+};
+
+/*
+ * struct imx_akcodec_plat_data - specific info for codecs
+ *
+ * @fs_mul: ratio of mclk/fs for normal mode
+ * @tdm_fs_mul: ratio of mclk/fs for tdm mode
+ * @support_rates: supported sample rate
+ * @support_tdm_rates: supported sample rate for tdm mode
+ * @support_channels: supported channels
+ * @support_tdm_channels: supported channels for tdm mode
+ * @num_fs_mul: ARRAY_SIZE of fs_mul
+ * @num_tdm_fs_mul: ARRAY_SIZE of tdm_fs_mul
+ * @num_rates: ARRAY_SIZE of support_rates
+ * @num_tdm_rates: ARRAY_SIZE of support_tdm_rates
+ * @num_channels: ARRAY_SIZE of support_channels
+ * @num_tdm_channels: ARRAY_SIZE of support_tdm_channels
+ * @num_codecs: codec number, maximum is MAX_CODECS
+ * @playback_only: only playback supported
+ * @capture_only: only capture supported
+ * @one2one_ratio: if mclk/bclk = 1 or not
+ * @tdm_is_support: if this codec support tdm
+ * @type: codec type
+ * @dai_name: codec dai name
+ */
+struct imx_akcodec_plat_data {
+ struct imx_akcodec_fs_mul *fs_mul;
+ struct imx_akcodec_tdm_fs_mul *tdm_fs_mul;
+ const u32 *support_rates;
+ const u32 *support_tdm_rates;
+ const u32 *support_channels;
+ const u32 *support_tdm_channels;
+ unsigned int num_fs_mul;
+ unsigned int num_tdm_fs_mul;
+ unsigned int num_rates;
+ unsigned int num_tdm_rates;
+ unsigned int num_channels;
+ unsigned int num_tdm_channels;
+ unsigned int num_codecs;
+ unsigned int playback_only;
+ unsigned int capture_only;
+ bool one2one_ratio;
+ bool tdm_is_support;
+ enum codec_type type;
+ const char *dai_name;
+};
+
+/*
+ * struct imx_akcodec_data - platform device data
+ *
+ * @card: card instance
+ * @codec_conf: pointer of codec conf
+ * @plat_data: pointer of imx_akcodec_plat_data
+ * @dai_link: snd_soc_dai_link
+ * @codecs: codec dai link component
+ * @dapm_routes: pointer of dapm_routes
+ * @asrc_pdev: pointer of asrc_pdev
+ * @num_codec_conf: number of codec conf
+ * @num_dapm_routes: number of dapm_routes
+ * @slots: slots value
+ * @slot_width: slot width value
+ * @tdm_mode: tdm mode enabled or not
+ * @asrc_rate: asrc rates
+ * @asrc_format: asrc format
+ */
+struct imx_akcodec_data {
+ struct snd_soc_card card;
+ struct snd_soc_codec_conf *codec_conf;
+ const struct imx_akcodec_plat_data *plat_data;
+ struct snd_soc_dai_link dai_link[3];
+ struct snd_soc_dai_link_component codecs[MAX_CODECS];
+ struct snd_soc_dapm_route *dapm_routes;
+ struct platform_device *asrc_pdev;
+ int num_codec_conf;
+ int num_dapm_routes;
+ unsigned int slots;
+ unsigned int slot_width;
+ bool tdm_mode;
+ u32 asrc_rate;
+ u32 asrc_format;
+};
+
+struct imx_akcodec_fs_mul ak4458_fs_mul[] = {
+ /* Normal, < 32kHz */
+ { .rmin = 8000, .rmax = 24000, .wmin = 1024, .wmax = 1024, },
+ /* Normal, 32kHz */
+ { .rmin = 32000, .rmax = 32000, .wmin = 256, .wmax = 1024, },
+ /* Normal */
+ { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 768, },
+ /* Double */
+ { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 512, },
+ /* Quad */
+ { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 256, },
+ /* Oct */
+ { .rmin = 352800, .rmax = 384000, .wmin = 32, .wmax = 128, },
+ /* Hex */
+ { .rmin = 705600, .rmax = 768000, .wmin = 16, .wmax = 64, },
+};
+
+struct imx_akcodec_tdm_fs_mul ak4458_tdm_fs_mul[] = {
+ /*
+ * Table 13 - Audio Interface Format
+ * For TDM mode, MCLK should is set to
+ * obtained from 2 * slots * slot_width
+ */
+ { .min = 128, .max = 128, .mul = 256 }, /* TDM128 */
+ { .min = 256, .max = 256, .mul = 512 }, /* TDM256 */
+ { .min = 512, .max = 512, .mul = 1024 }, /* TDM512 */
+};
+
+struct imx_akcodec_fs_mul ak4497_fs_mul[] = {
+ /**
+ * Table 7 - mapping multiplier and speed mode
+ * Tables 8 & 9 - mapping speed mode and LRCK fs
+ */
+ { .rmin = 8000, .rmax = 32000, .wmin = 1024, .wmax = 1024, }, /* Normal, <= 32kHz */
+ { .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, }, /* Normal */
+ { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, /* Double */
+ { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, /* Quad */
+ { .rmin = 352800, .rmax = 384000, .wmin = 128, .wmax = 128, }, /* Oct */
+ { .rmin = 705600, .rmax = 768000, .wmin = 64, .wmax = 64, }, /* Hex */
+};
+
+/*
+ * Auto MCLK selection based on LRCK for Normal Mode
+ * (Table 4 from datasheet)
+ */
+struct imx_akcodec_fs_mul ak5558_fs_mul[] = {
+ { .rmin = 8000, .rmax = 32000, .wmin = 1024, .wmax = 1024, },
+ { .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, },
+ { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, },
+ { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, },
+ { .rmin = 352800, .rmax = 384000, .wmin = 64, .wmax = 64, },
+ { .rmin = 705600, .rmax = 768000, .wmin = 32, .wmax = 32, },
+};
+
+/*
+ * MCLK and BCLK selection based on TDM mode
+ * because of SAI we also add the restriction: MCLK >= 2 * BCLK
+ * (Table 9 from datasheet)
+ */
+struct imx_akcodec_tdm_fs_mul ak5558_tdm_fs_mul[] = {
+ { .min = 128, .max = 128, .mul = 256 },
+ { .min = 256, .max = 256, .mul = 512 },
+ { .min = 512, .max = 512, .mul = 1024 },
+};
+
+static const u32 akcodec_rates[] = {
+ 8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
+ 96000, 176400, 192000, 352800, 384000, 705600, 768000,
+};
+
+static const u32 akcodec_tdm_rates[] = {
+ 8000, 16000, 32000, 48000, 96000,
+};
+
+static const u32 ak4458_channels[] = {
+ 1, 2, 4, 6, 8, 10, 12, 14, 16,
+};
+
+static const u32 ak4458_tdm_channels[] = {
+ 1, 2, 3, 4, 5, 6, 7, 8, 16,
+};
+
+static const u32 ak5558_channels[] = {
+ 1, 2, 4, 6, 8,
+};
+
+static const u32 ak5558_tdm_channels[] = {
+ 1, 2, 3, 4, 5, 6, 7, 8,
+};
+
+static const struct imx_akcodec_plat_data imx8mq_ak4458 = {
+ .fs_mul = ak4458_fs_mul,
+ .num_fs_mul = ARRAY_SIZE(ak4458_fs_mul),
+ .tdm_fs_mul = ak4458_tdm_fs_mul,
+ .num_tdm_fs_mul = ARRAY_SIZE(ak4458_tdm_fs_mul),
+ .support_rates = akcodec_rates,
+ .num_rates = ARRAY_SIZE(akcodec_rates),
+ .support_tdm_rates = akcodec_tdm_rates,
+ .num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates),
+ .support_channels = ak4458_channels,
+ .num_channels = ARRAY_SIZE(ak4458_channels),
+ .support_tdm_channels = ak4458_tdm_channels,
+ .num_tdm_channels = ARRAY_SIZE(ak4458_tdm_channels),
+ .one2one_ratio = false,
+ .dai_name = "ak4458-aif",
+ .num_codecs = MAX_CODECS,
+ .tdm_is_support = true,
+ .playback_only = 1,
+ .capture_only = 0,
+ .type = CODEC_AK4458,
+};
+
+static const struct imx_akcodec_plat_data imx_ak4458 = {
+ .fs_mul = ak4458_fs_mul,
+ .num_fs_mul = ARRAY_SIZE(ak4458_fs_mul),
+ .tdm_fs_mul = ak4458_tdm_fs_mul,
+ .num_tdm_fs_mul = ARRAY_SIZE(ak4458_tdm_fs_mul),
+ .support_rates = akcodec_rates,
+ .num_rates = ARRAY_SIZE(akcodec_rates),
+ .support_tdm_rates = akcodec_tdm_rates,
+ .num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates),
+ .support_channels = ak4458_channels,
+ .num_channels = ARRAY_SIZE(ak4458_channels),
+ .support_tdm_channels = ak4458_tdm_channels,
+ .num_tdm_channels = ARRAY_SIZE(ak4458_tdm_channels),
+ .one2one_ratio = true,
+ .dai_name = "ak4458-aif",
+ .num_codecs = MAX_CODECS,
+ .tdm_is_support = true,
+ .playback_only = 1,
+ .capture_only = 0,
+ .type = CODEC_AK4458,
+};
+
+static const struct imx_akcodec_plat_data imx8mq_ak4497 = {
+ .fs_mul = ak4497_fs_mul,
+ .num_fs_mul = ARRAY_SIZE(ak4497_fs_mul),
+ .support_rates = akcodec_rates,
+ .num_rates = ARRAY_SIZE(akcodec_rates),
+ .support_channels = ak4458_channels,
+ .num_channels = ARRAY_SIZE(ak4458_channels),
+ .one2one_ratio = false,
+ .dai_name = "ak4497-aif",
+ .num_codecs = 1,
+ .tdm_is_support = false,
+ .playback_only = 1,
+ .capture_only = 0,
+ .type = CODEC_AK4497,
+};
+
+static const struct imx_akcodec_plat_data imx_ak4497 = {
+ .fs_mul = ak4497_fs_mul,
+ .num_fs_mul = ARRAY_SIZE(ak4497_fs_mul),
+ .support_rates = akcodec_rates,
+ .num_rates = ARRAY_SIZE(akcodec_rates),
+ .support_channels = ak4458_channels,
+ .num_channels = ARRAY_SIZE(ak4458_channels),
+ .one2one_ratio = true,
+ .dai_name = "ak4497-aif",
+ .num_codecs = 1,
+ .tdm_is_support = false,
+ .playback_only = 1,
+ .capture_only = 0,
+ .type = CODEC_AK4497,
+};
+
+static const struct imx_akcodec_plat_data imx8mq_ak5558 = {
+ .fs_mul = ak5558_fs_mul,
+ .num_fs_mul = ARRAY_SIZE(ak5558_fs_mul),
+ .tdm_fs_mul = ak5558_tdm_fs_mul,
+ .num_tdm_fs_mul = ARRAY_SIZE(ak5558_tdm_fs_mul),
+ .support_rates = akcodec_rates,
+ .num_rates = ARRAY_SIZE(akcodec_rates),
+ .support_tdm_rates = akcodec_tdm_rates,
+ .num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates),
+ .support_channels = ak5558_channels,
+ .num_channels = ARRAY_SIZE(ak5558_channels),
+ .support_tdm_channels = ak5558_tdm_channels,
+ .num_tdm_channels = ARRAY_SIZE(ak5558_tdm_channels),
+ .one2one_ratio = false,
+ .dai_name = "ak5558-aif",
+ .num_codecs = 1,
+ .tdm_is_support = true,
+ .playback_only = 0,
+ .capture_only = 1,
+ .type = CODEC_AK5558,
+};
+
+static const struct imx_akcodec_plat_data imx_ak5558 = {
+ .fs_mul = ak5558_fs_mul,
+ .num_fs_mul = ARRAY_SIZE(ak5558_fs_mul),
+ .tdm_fs_mul = ak5558_tdm_fs_mul,
+ .num_tdm_fs_mul = ARRAY_SIZE(ak5558_tdm_fs_mul),
+ .support_rates = akcodec_rates,
+ .num_rates = ARRAY_SIZE(akcodec_rates),
+ .support_tdm_rates = akcodec_tdm_rates,
+ .num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates),
+ .support_channels = ak5558_channels,
+ .num_channels = ARRAY_SIZE(ak5558_channels),
+ .support_tdm_channels = ak5558_tdm_channels,
+ .num_tdm_channels = ARRAY_SIZE(ak5558_tdm_channels),
+ .one2one_ratio = true,
+ .dai_name = "ak5558-aif",
+ .num_codecs = 1,
+ .tdm_is_support = true,
+ .playback_only = 0,
+ .capture_only = 1,
+ .type = CODEC_AK5558,
+};
+
+static bool format_is_dsd(struct snd_pcm_hw_params *params)
+{
+ snd_pcm_format_t format = params_format(params);
+
+ switch (format) {
+ case SNDRV_PCM_FORMAT_DSD_U8:
+ case SNDRV_PCM_FORMAT_DSD_U16_LE:
+ case SNDRV_PCM_FORMAT_DSD_U16_BE:
+ case SNDRV_PCM_FORMAT_DSD_U32_LE:
+ case SNDRV_PCM_FORMAT_DSD_U32_BE:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static struct snd_soc_dapm_widget imx_akcodec_dapm_widgets[] = {
+ SND_SOC_DAPM_LINE("Line Out", NULL),
+ SND_SOC_DAPM_LINE("Line In", NULL),
+};
+
+static unsigned long akcodec_get_mclk_rate(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct imx_akcodec_data *data = snd_soc_card_get_drvdata(rtd->card);
+ const struct imx_akcodec_plat_data *plat_data = data->plat_data;
+ unsigned int width = data->slots * data->slot_width;
+ unsigned int rate = params_rate(params);
+ int i;
+
+ if (data->tdm_mode) {
+ for (i = 0; i < plat_data->num_tdm_fs_mul; i++) {
+ /* min = max = slots * slots_width */
+ if (width != plat_data->tdm_fs_mul[i].min)
+ continue;
+ return rate * plat_data->tdm_fs_mul[i].mul;
+ }
+ } else {
+ for (i = 0; i < plat_data->num_fs_mul; i++) {
+ if (rate >= plat_data->fs_mul[i].rmin &&
+ rate <= plat_data->fs_mul[i].rmax) {
+ width = max(width, plat_data->fs_mul[i].wmin);
+ width = min(width, plat_data->fs_mul[i].wmax);
+
+ /* Adjust SAI bclk:mclk ratio */
+ width *= plat_data->one2one_ratio ? 1 : 2;
+
+ return rate * width;
+ }
+ }
+ }
+
+ /* Let DAI manage clk frequency by default */
+ return 0;
+}
+
+static int imx_aif_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ struct snd_soc_card *card = rtd->card;
+ struct imx_akcodec_data *data = snd_soc_card_get_drvdata(card);
+ unsigned int fmt = SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
+ bool is_dsd = format_is_dsd(params);
+ struct device *dev = card->dev;
+ unsigned long mclk_freq;
+ int ret, i;
+
+ if (is_dsd) {
+ data->slots = 1;
+ data->slot_width = params_width(params);
+ fmt |= SND_SOC_DAIFMT_PDM;
+ } else if (data->tdm_mode) {
+ data->slots = 8;
+ data->slot_width = 32;
+ fmt |= SND_SOC_DAIFMT_DSP_B;
+ } else {
+ data->slots = 2;
+ data->slot_width = params_physical_width(params);
+ fmt |= SND_SOC_DAIFMT_I2S;
+ }
+
+ ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
+ if (ret) {
+ dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
+ return ret;
+ }
+ ret = snd_soc_dai_set_tdm_slot(cpu_dai,
+ BIT(data->slots) - 1,
+ BIT(data->slots) - 1,
+ data->slots, data->slot_width);
+ if (ret) {
+ dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
+ return ret;
+ }
+
+ for (i = 0; i < rtd->num_codecs; i++) {
+ struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, i);
+
+ ret = snd_soc_dai_set_fmt(codec_dai, fmt);
+ if (ret) {
+ dev_err(dev, "failed to set codec dai[%d] fmt: %d\n", i, ret);
+ return ret;
+ }
+ ret = snd_soc_dai_set_tdm_slot(codec_dai,
+ BIT(data->slots) - 1,
+ BIT(data->slots) - 1,
+ data->slots, data->slot_width);
+ if (ret) {
+ dev_err(dev, "failed to set codec dai[%d] tdm slot: %d\n", i, ret);
+ return ret;
+ }
+ }
+
+ /* Set MCLK freq */
+ mclk_freq = akcodec_get_mclk_rate(substream, params);
+ /* Use the maximum freq from DSD512 (512*44100 = 22579200) */
+ if (is_dsd)
+ mclk_freq = 22579200;
+
+ ret = snd_soc_dai_set_sysclk(cpu_dai, FSL_SAI_CLK_MAST1, mclk_freq,
+ SND_SOC_CLOCK_OUT);
+ if (ret < 0)
+ dev_err(dev, "failed to set cpui dai mclk1 rate (%lu): %d\n",
+ mclk_freq, ret);
+ return ret;
+}
+
+static int ak5558_hw_rule_rate(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *r)
+{
+ struct imx_akcodec_data *data = r->private;
+ struct snd_interval t = { .min = 8000, .max = 8000, };
+ unsigned long mclk_freq;
+ unsigned int fs;
+ int i;
+
+ fs = hw_param_interval(p, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min;
+ fs *= data->tdm_mode ? 8 : 2;
+
+ /* Identify maximum supported rate */
+ for (i = 0; i < ARRAY_SIZE(akcodec_rates); i++) {
+ mclk_freq = fs * akcodec_rates[i];
+ /* Adjust SAI bclk:mclk ratio */
+ mclk_freq *= data->plat_data->one2one_ratio ? 1 : 2;
+
+ /* Skip rates for which MCLK is beyond supported value */
+ if (mclk_freq > 36864000)
+ continue;
+
+ if (t.max < akcodec_rates[i])
+ t.max = akcodec_rates[i];
+ }
+
+ return snd_interval_refine(hw_param_interval(p, r->var), &t);
+}
+
+static int imx_aif_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_card *card = rtd->card;
+ struct imx_akcodec_data *data = snd_soc_card_get_drvdata(card);
+ static struct snd_pcm_hw_constraint_list constraint_rates;
+ static struct snd_pcm_hw_constraint_list constraint_channels;
+ int ret = 0;
+
+ if (data->tdm_mode) {
+ constraint_channels.list = data->plat_data->support_tdm_channels;
+ constraint_channels.count = data->plat_data->num_tdm_channels;
+ constraint_rates.list = data->plat_data->support_tdm_rates;
+ constraint_rates.count = data->plat_data->num_tdm_rates;
+ } else {
+ constraint_channels.list = data->plat_data->support_channels;
+ constraint_channels.count = data->plat_data->num_channels;
+ constraint_rates.list = data->plat_data->support_rates;
+ constraint_rates.count = data->plat_data->num_rates;
+ }
+
+ ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ &constraint_channels);
+ if (ret)
+ return ret;
+
+ ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &constraint_rates);
+ if (ret)
+ return ret;
+
+ if (data->plat_data->type == CODEC_AK5558)
+ ret = snd_pcm_hw_rule_add(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ ak5558_hw_rule_rate, data,
+ SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1);
+
+ return ret;
+}
+
+static int imx_aif_hw_params_be(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+ struct snd_soc_card *card = rtd->card;
+ struct device *dev = card->dev;
+ struct imx_akcodec_data *data = snd_soc_card_get_drvdata(card);
+ unsigned int slots, slot_width;
+ unsigned long mclk_freq;
+ unsigned int fmt;
+ int ret;
+
+ /* In order to support odd channels, force tdm mode for FE-BE case */
+ if (data->plat_data->tdm_is_support) {
+ fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
+ /* support TDM256 (8 slots * 32 bits/per slot) */
+ slots = 8;
+ slot_width = 32;
+ } else {
+ fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
+ slots = 2;
+ slot_width = 32;
+ }
+
+ ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
+ if (ret) {
+ dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_fmt(codec_dai, fmt);
+ if (ret) {
+ dev_err(dev, "failed to set codec dai fmt: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_tdm_slot(cpu_dai, BIT(slots) - 1, BIT(slots) - 1,
+ slots, slot_width);
+ if (ret) {
+ dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_tdm_slot(codec_dai, BIT(slots) - 1, BIT(slots) - 1,
+ slots, slot_width);
+ if (ret) {
+ dev_err(dev, "failed to set codec dai fmt: %d\n", ret);
+ return ret;
+ }
+
+ mclk_freq = akcodec_get_mclk_rate(substream, params);
+ ret = snd_soc_dai_set_sysclk(cpu_dai, FSL_SAI_CLK_MAST1, mclk_freq,
+ SND_SOC_CLOCK_OUT);
+ if (ret < 0)
+ dev_err(dev, "failed to set cpu_dai mclk1 rate %lu\n",
+ mclk_freq);
+
+ return ret;
+}
+
+static struct snd_soc_ops imx_aif_ops = {
+ .hw_params = imx_aif_hw_params,
+ .startup = imx_aif_startup,
+};
+
+static struct snd_soc_ops imx_aif_ops_be = {
+ .hw_params = imx_aif_hw_params_be,
+};
+
+static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_card *card = rtd->card;
+ struct imx_akcodec_data *data = snd_soc_card_get_drvdata(card);
+ struct snd_interval *rate;
+ struct snd_mask *mask;
+
+ if (!data->asrc_pdev)
+ return -EINVAL;
+
+ rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+ rate->max = data->asrc_rate;
+ rate->min = data->asrc_rate;
+
+ mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ snd_mask_none(mask);
+ snd_mask_set(mask, data->asrc_format);
+
+ return 0;
+}
+
+static int imx_akcodec_probe(struct platform_device *pdev)
+{
+ struct snd_soc_dai_link_component *dlc;
+ struct device_node *codec_np[MAX_CODECS];
+ struct device_node *cpu_np = NULL;
+ struct imx_akcodec_data *data;
+ struct device_node *asrc_np = NULL;
+ char tmp[MAX_CODECS][8];
+ int ret, i;
+ u32 width;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->plat_data = of_device_get_match_data(&pdev->dev);
+
+ dlc = devm_kzalloc(&pdev->dev, 9 * sizeof(*dlc), GFP_KERNEL);
+ if (!dlc)
+ return -ENOMEM;
+
+ cpu_np = of_parse_phandle(pdev->dev.of_node, "audio-cpu", 0);
+ if (!cpu_np) {
+ dev_err(&pdev->dev, "audio dai phandle missing or invalid\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ /* Parse codec node */
+ for (i = 0; i < data->plat_data->num_codecs; i++) {
+ codec_np[i] = of_parse_phandle(pdev->dev.of_node, "audio-codec", i);
+ if (!codec_np[i]) {
+ dev_err(&pdev->dev, "audio codec phandle missing or invalid\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+ }
+
+ asrc_np = of_parse_phandle(pdev->dev.of_node, "audio-asrc", 0);
+ if (asrc_np)
+ data->asrc_pdev = of_find_device_by_node(asrc_np);
+
+ if (of_find_property(pdev->dev.of_node, "fsl,tdm", NULL) &&
+ data->plat_data->tdm_is_support)
+ data->tdm_mode = true;
+
+ data->num_codec_conf = data->plat_data->num_codecs;
+ data->codec_conf = devm_kzalloc(&pdev->dev,
+ data->num_codec_conf * sizeof(struct snd_soc_codec_conf),
+ GFP_KERNEL);
+ if (!data->codec_conf) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ data->num_dapm_routes = data->plat_data->num_codecs + 1;
+ data->dapm_routes = devm_kcalloc(&pdev->dev, data->num_dapm_routes,
+ sizeof(struct snd_soc_dapm_route),
+ GFP_KERNEL);
+ if (!data->dapm_routes) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ data->dai_link[0].name = "akcodec";
+ data->dai_link[0].stream_name = "Audio";
+ data->dai_link[0].cpus = &dlc[0];
+ data->dai_link[0].platforms = &dlc[1];
+ data->dai_link[0].codecs = data->codecs;
+ data->dai_link[0].num_cpus = 1;
+ data->dai_link[0].num_platforms = 1;
+ data->dai_link[0].num_codecs = data->plat_data->num_codecs;
+ data->dai_link[0].cpus->of_node = cpu_np;
+ data->dai_link[0].platforms->of_node = cpu_np;
+
+ for (i = 0; i < data->plat_data->num_codecs; i++) {
+ sprintf(tmp[i], "%d", i);
+ data->codec_conf[i].name_prefix = tmp[i];
+ data->codec_conf[i].dlc.of_node = codec_np[i];
+ data->codecs[i].of_node = codec_np[i];
+ data->codecs[i].dai_name = data->plat_data->dai_name;
+
+ if (data->plat_data->playback_only) {
+ data->dapm_routes[i].sink =
+ devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s %s",
+ tmp[i], "Playback");
+ data->dapm_routes[i].source = "CPU-Playback";
+ } else {
+ data->dapm_routes[i].source =
+ devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s %s",
+ tmp[i], "Capture");
+ data->dapm_routes[i].sink = "CPU-Capture";
+ }
+ }
+
+ if (data->plat_data->playback_only) {
+ data->dapm_routes[i].sink = "CPU-Playback";
+ data->dapm_routes[i].source = "ASRC-Playback";
+ } else {
+ data->dapm_routes[i].sink = "ASRC-Capture";
+ data->dapm_routes[i].source = "CPU-Capture";
+ }
+
+ data->dai_link[0].ops = &imx_aif_ops;
+ data->dai_link[0].ignore_pmdown_time = 1;
+ data->dai_link[0].playback_only = data->plat_data->playback_only;
+ data->dai_link[0].capture_only = data->plat_data->capture_only;
+
+ data->card.codec_conf = data->codec_conf;
+ data->card.num_configs = data->num_codec_conf;
+ data->card.dai_link = &data->dai_link[0];
+ data->card.num_links = 1;
+ data->card.dev = &pdev->dev;
+ data->card.owner = THIS_MODULE;
+ data->card.dapm_widgets = imx_akcodec_dapm_widgets;
+ data->card.num_dapm_widgets = ARRAY_SIZE(imx_akcodec_dapm_widgets);
+
+ /*if there is no asrc controller, we only enable one device*/
+ if (data->asrc_pdev) {
+ data->dai_link[1].name = "HiFi-ASRC-FE";
+ data->dai_link[1].stream_name = "HiFi-ASRC-FE";
+ data->dai_link[1].dynamic = 1;
+ data->dai_link[1].ignore_pmdown_time = 1;
+ data->dai_link[1].dpcm_playback = data->plat_data->playback_only;
+ data->dai_link[1].dpcm_capture = data->plat_data->capture_only;
+ data->dai_link[1].dpcm_merged_chan = 1;
+
+ data->dai_link[1].cpus = &dlc[2];
+ data->dai_link[1].platforms = &dlc[3];
+ data->dai_link[1].codecs = &dlc[4];
+ data->dai_link[1].num_cpus = 1;
+ data->dai_link[1].num_platforms = 1;
+ data->dai_link[1].num_codecs = 1;
+ data->dai_link[1].cpus->of_node = asrc_np;
+ data->dai_link[1].platforms->of_node = asrc_np;
+ data->dai_link[1].codecs->name = "snd-soc-dummy";
+ data->dai_link[1].codecs->dai_name = "snd-soc-dummy-dai";
+
+ data->dai_link[2].cpus = &dlc[5];
+ data->dai_link[2].platforms = &dlc[6];
+ data->dai_link[2].codecs = data->codecs;
+ data->dai_link[2].num_cpus = 1;
+ data->dai_link[2].num_platforms = 1;
+ data->dai_link[2].num_codecs = data->plat_data->num_codecs;
+
+ data->dai_link[2].name = "HiFi-ASRC-BE";
+ data->dai_link[2].stream_name = "HiFi-ASRC-BE";
+ data->dai_link[2].cpus->of_node = cpu_np;
+ data->dai_link[2].platforms->name = "snd-soc-dummy";
+ data->dai_link[2].ops = &imx_aif_ops_be;
+ data->dai_link[2].be_hw_params_fixup = be_hw_params_fixup;
+ data->dai_link[2].no_pcm = 1;
+ data->dai_link[2].ignore_pmdown_time = 1;
+ data->dai_link[2].dpcm_playback = data->plat_data->playback_only;
+ data->dai_link[2].dpcm_capture = data->plat_data->capture_only;
+
+ data->card.dapm_routes = data->dapm_routes;
+ data->card.num_dapm_routes = data->num_dapm_routes;
+ data->card.num_links = 3;
+
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
+ &data->asrc_rate);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to get output rate\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-format",
+ &data->asrc_format);
+ if (ret) {
+ /* Fallback to old binding; translate to asrc_format */
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-width",
+ &width);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "failed to decide output format\n");
+ goto fail;
+ }
+
+ if (width == 24)
+ data->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
+ else
+ data->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
+ }
+ }
+
+ ret = snd_soc_of_parse_card_name(&data->card, "model");
+ if (ret)
+ goto fail;
+
+ snd_soc_card_set_drvdata(&data->card, data);
+ ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
+ goto fail;
+ }
+
+ ret = 0;
+fail:
+ if (cpu_np)
+ of_node_put(cpu_np);
+
+ for (i = 0; i < data->plat_data->num_codecs; i++)
+ if (codec_np[i])
+ of_node_put(codec_np[i]);
+
+ return ret;
+}
+
+static const struct of_device_id imx_akcodec_dt_ids[] = {
+ { .compatible = "fsl,imx8mq-audio-ak4458", .data = &imx8mq_ak4458, },
+ { .compatible = "fsl,imx8mq-audio-ak4497", .data = &imx8mq_ak4497, },
+ { .compatible = "fsl,imx8mq-audio-ak5558", .data = &imx8mq_ak5558, },
+ { .compatible = "fsl,imx-audio-ak4458", .data = &imx_ak4458, },
+ { .compatible = "fsl,imx-audio-ak4497", .data = &imx_ak4497, },
+ { .compatible = "fsl,imx-audio-ak5558", .data = &imx_ak5558, },
+ { .compatible = "fsl,imx-audio-ak5552", .data = &imx_ak5558, },
+ { },
+};
+MODULE_DEVICE_TABLE(of, imx_akcodec_dt_ids);
+
+static struct platform_driver imx_akcodec_driver = {
+ .driver = {
+ .name = "imx-akcodec",
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = imx_akcodec_dt_ids,
+ },
+ .probe = imx_akcodec_probe,
+};
+module_platform_driver(imx_akcodec_driver);
+
+MODULE_DESCRIPTION("Freescale i.MX AK CODEC ASoC machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:imx-akcodec");
--
2.17.1
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