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@nxp.com Signed-off-by: Mihai Serban mihai.serban@nxp.com Signed-off-by: Cosmin-Gabriel Samoila cosmin.samoila@nxp.com Signed-off-by: Viorel Suman viorel.suman@nxp.com Signed-off-by: Daniel Baluta daniel.baluta@nxp.com Signed-off-by: Adrian Alonso adrian.alonso@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");