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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /sound/soc/tegra/tegra186_dspk.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/soc/tegra/tegra186_dspk.c')
-rw-r--r-- | sound/soc/tegra/tegra186_dspk.c | 553 |
1 files changed, 553 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra186_dspk.c b/sound/soc/tegra/tegra186_dspk.c new file mode 100644 index 0000000000..a0ce7eb11d --- /dev/null +++ b/sound/soc/tegra/tegra186_dspk.c @@ -0,0 +1,553 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// tegra186_dspk.c - Tegra186 DSPK driver +// +// Copyright (c) 2020 NVIDIA CORPORATION. All rights reserved. + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <sound/core.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include "tegra186_dspk.h" +#include "tegra_cif.h" + +static const struct reg_default tegra186_dspk_reg_defaults[] = { + { TEGRA186_DSPK_RX_INT_MASK, 0x00000007 }, + { TEGRA186_DSPK_RX_CIF_CTRL, 0x00007700 }, + { TEGRA186_DSPK_CG, 0x00000001 }, + { TEGRA186_DSPK_CORE_CTRL, 0x00000310 }, + { TEGRA186_DSPK_CODEC_CTRL, 0x03000000 }, +}; + +static int tegra186_dspk_get_fifo_th(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + + ucontrol->value.integer.value[0] = dspk->rx_fifo_th; + + return 0; +} + +static int tegra186_dspk_put_fifo_th(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + int value = ucontrol->value.integer.value[0]; + + if (value == dspk->rx_fifo_th) + return 0; + + dspk->rx_fifo_th = value; + + return 1; +} + +static int tegra186_dspk_get_osr_val(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + + ucontrol->value.enumerated.item[0] = dspk->osr_val; + + return 0; +} + +static int tegra186_dspk_put_osr_val(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + unsigned int value = ucontrol->value.enumerated.item[0]; + + if (value == dspk->osr_val) + return 0; + + dspk->osr_val = value; + + return 1; +} + +static int tegra186_dspk_get_pol_sel(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + + ucontrol->value.enumerated.item[0] = dspk->lrsel; + + return 0; +} + +static int tegra186_dspk_put_pol_sel(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + unsigned int value = ucontrol->value.enumerated.item[0]; + + if (value == dspk->lrsel) + return 0; + + dspk->lrsel = value; + + return 1; +} + +static int tegra186_dspk_get_ch_sel(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + + ucontrol->value.enumerated.item[0] = dspk->ch_sel; + + return 0; +} + +static int tegra186_dspk_put_ch_sel(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + unsigned int value = ucontrol->value.enumerated.item[0]; + + if (value == dspk->ch_sel) + return 0; + + dspk->ch_sel = value; + + return 1; +} + +static int tegra186_dspk_get_mono_to_stereo(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + + ucontrol->value.enumerated.item[0] = dspk->mono_to_stereo; + + return 0; +} + +static int tegra186_dspk_put_mono_to_stereo(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + unsigned int value = ucontrol->value.enumerated.item[0]; + + if (value == dspk->mono_to_stereo) + return 0; + + dspk->mono_to_stereo = value; + + return 1; +} + +static int tegra186_dspk_get_stereo_to_mono(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + + ucontrol->value.enumerated.item[0] = dspk->stereo_to_mono; + + return 0; +} + +static int tegra186_dspk_put_stereo_to_mono(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol); + struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec); + unsigned int value = ucontrol->value.enumerated.item[0]; + + if (value == dspk->stereo_to_mono) + return 0; + + dspk->stereo_to_mono = value; + + return 1; +} + +static int __maybe_unused tegra186_dspk_runtime_suspend(struct device *dev) +{ + struct tegra186_dspk *dspk = dev_get_drvdata(dev); + + regcache_cache_only(dspk->regmap, true); + regcache_mark_dirty(dspk->regmap); + + clk_disable_unprepare(dspk->clk_dspk); + + return 0; +} + +static int __maybe_unused tegra186_dspk_runtime_resume(struct device *dev) +{ + struct tegra186_dspk *dspk = dev_get_drvdata(dev); + int err; + + err = clk_prepare_enable(dspk->clk_dspk); + if (err) { + dev_err(dev, "failed to enable DSPK clock, err: %d\n", err); + return err; + } + + regcache_cache_only(dspk->regmap, false); + regcache_sync(dspk->regmap); + + return 0; +} + +static int tegra186_dspk_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct tegra186_dspk *dspk = snd_soc_dai_get_drvdata(dai); + unsigned int channels, srate, dspk_clk; + struct device *dev = dai->dev; + struct tegra_cif_conf cif_conf; + unsigned int max_th; + int err; + + memset(&cif_conf, 0, sizeof(struct tegra_cif_conf)); + + channels = params_channels(params); + cif_conf.audio_ch = channels; + + /* Client channel */ + switch (dspk->ch_sel) { + case DSPK_CH_SELECT_LEFT: + case DSPK_CH_SELECT_RIGHT: + cif_conf.client_ch = 1; + break; + case DSPK_CH_SELECT_STEREO: + cif_conf.client_ch = 2; + break; + default: + dev_err(dev, "Invalid DSPK client channels\n"); + return -EINVAL; + } + + cif_conf.client_bits = TEGRA_ACIF_BITS_24; + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + cif_conf.audio_bits = TEGRA_ACIF_BITS_16; + break; + case SNDRV_PCM_FORMAT_S32_LE: + cif_conf.audio_bits = TEGRA_ACIF_BITS_32; + break; + default: + dev_err(dev, "unsupported format!\n"); + return -EOPNOTSUPP; + } + + srate = params_rate(params); + + /* RX FIFO threshold in terms of frames */ + max_th = (TEGRA186_DSPK_RX_FIFO_DEPTH / cif_conf.audio_ch) - 1; + + if (dspk->rx_fifo_th > max_th) + dspk->rx_fifo_th = max_th; + + cif_conf.threshold = dspk->rx_fifo_th; + cif_conf.mono_conv = dspk->mono_to_stereo; + cif_conf.stereo_conv = dspk->stereo_to_mono; + + tegra_set_cif(dspk->regmap, TEGRA186_DSPK_RX_CIF_CTRL, + &cif_conf); + + /* + * DSPK clock and PDM codec clock should be synchronous with 4:1 ratio, + * this is because it takes 4 clock cycles to send out one sample to + * codec by sigma delta modulator. Finally the clock rate is a multiple + * of 'Over Sampling Ratio', 'Sample Rate' and 'Interface Clock Ratio'. + */ + dspk_clk = (DSPK_OSR_FACTOR << dspk->osr_val) * srate * DSPK_CLK_RATIO; + + err = clk_set_rate(dspk->clk_dspk, dspk_clk); + if (err) { + dev_err(dev, "can't set DSPK clock rate %u, err: %d\n", + dspk_clk, err); + + return err; + } + + regmap_update_bits(dspk->regmap, + /* Reg */ + TEGRA186_DSPK_CORE_CTRL, + /* Mask */ + TEGRA186_DSPK_OSR_MASK | + TEGRA186_DSPK_CHANNEL_SELECT_MASK | + TEGRA186_DSPK_CTRL_LRSEL_POLARITY_MASK, + /* Value */ + (dspk->osr_val << DSPK_OSR_SHIFT) | + ((dspk->ch_sel + 1) << CH_SEL_SHIFT) | + (dspk->lrsel << LRSEL_POL_SHIFT)); + + return 0; +} + +static const struct snd_soc_dai_ops tegra186_dspk_dai_ops = { + .hw_params = tegra186_dspk_hw_params, +}; + +static struct snd_soc_dai_driver tegra186_dspk_dais[] = { + { + .name = "DSPK-CIF", + .playback = { + .stream_name = "CIF-Playback", + .channels_min = 1, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S32_LE, + }, + }, + { + .name = "DSPK-DAP", + .playback = { + .stream_name = "DAP-Playback", + .channels_min = 1, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S32_LE, + }, + .ops = &tegra186_dspk_dai_ops, + .symmetric_rate = 1, + }, +}; + +static const struct snd_soc_dapm_widget tegra186_dspk_widgets[] = { + SND_SOC_DAPM_AIF_IN("RX", NULL, 0, TEGRA186_DSPK_ENABLE, 0, 0), + SND_SOC_DAPM_SPK("SPK", NULL), +}; + +static const struct snd_soc_dapm_route tegra186_dspk_routes[] = { + { "XBAR-Playback", NULL, "XBAR-TX" }, + { "CIF-Playback", NULL, "XBAR-Playback" }, + { "RX", NULL, "CIF-Playback" }, + { "DAP-Playback", NULL, "RX" }, + { "SPK", NULL, "DAP-Playback" }, +}; + +static const char * const tegra186_dspk_ch_sel_text[] = { + "Left", "Right", "Stereo", +}; + +static const struct soc_enum tegra186_dspk_ch_sel_enum = + SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, ARRAY_SIZE(tegra186_dspk_ch_sel_text), + tegra186_dspk_ch_sel_text); + +static const char * const tegra186_dspk_osr_text[] = { + "OSR_32", "OSR_64", "OSR_128", "OSR_256", +}; + +static const struct soc_enum tegra186_dspk_osr_enum = + SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, ARRAY_SIZE(tegra186_dspk_osr_text), + tegra186_dspk_osr_text); + +static const char * const tegra186_dspk_lrsel_text[] = { + "Left", "Right", +}; + +static const char * const tegra186_dspk_mono_conv_text[] = { + "Zero", "Copy", +}; + +static const struct soc_enum tegra186_dspk_mono_conv_enum = + SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, + ARRAY_SIZE(tegra186_dspk_mono_conv_text), + tegra186_dspk_mono_conv_text); + +static const char * const tegra186_dspk_stereo_conv_text[] = { + "CH0", "CH1", "AVG", +}; + +static const struct soc_enum tegra186_dspk_stereo_conv_enum = + SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, + ARRAY_SIZE(tegra186_dspk_stereo_conv_text), + tegra186_dspk_stereo_conv_text); + +static const struct soc_enum tegra186_dspk_lrsel_enum = + SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, ARRAY_SIZE(tegra186_dspk_lrsel_text), + tegra186_dspk_lrsel_text); + +static const struct snd_kcontrol_new tegrat186_dspk_controls[] = { + SOC_SINGLE_EXT("FIFO Threshold", SND_SOC_NOPM, 0, + TEGRA186_DSPK_RX_FIFO_DEPTH - 1, 0, + tegra186_dspk_get_fifo_th, tegra186_dspk_put_fifo_th), + SOC_ENUM_EXT("OSR Value", tegra186_dspk_osr_enum, + tegra186_dspk_get_osr_val, tegra186_dspk_put_osr_val), + SOC_ENUM_EXT("LR Polarity Select", tegra186_dspk_lrsel_enum, + tegra186_dspk_get_pol_sel, tegra186_dspk_put_pol_sel), + SOC_ENUM_EXT("Channel Select", tegra186_dspk_ch_sel_enum, + tegra186_dspk_get_ch_sel, tegra186_dspk_put_ch_sel), + SOC_ENUM_EXT("Mono To Stereo", tegra186_dspk_mono_conv_enum, + tegra186_dspk_get_mono_to_stereo, + tegra186_dspk_put_mono_to_stereo), + SOC_ENUM_EXT("Stereo To Mono", tegra186_dspk_stereo_conv_enum, + tegra186_dspk_get_stereo_to_mono, + tegra186_dspk_put_stereo_to_mono), +}; + +static const struct snd_soc_component_driver tegra186_dspk_cmpnt = { + .dapm_widgets = tegra186_dspk_widgets, + .num_dapm_widgets = ARRAY_SIZE(tegra186_dspk_widgets), + .dapm_routes = tegra186_dspk_routes, + .num_dapm_routes = ARRAY_SIZE(tegra186_dspk_routes), + .controls = tegrat186_dspk_controls, + .num_controls = ARRAY_SIZE(tegrat186_dspk_controls), +}; + +static bool tegra186_dspk_wr_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case TEGRA186_DSPK_RX_INT_MASK ... TEGRA186_DSPK_RX_CIF_CTRL: + case TEGRA186_DSPK_ENABLE ... TEGRA186_DSPK_CG: + case TEGRA186_DSPK_CORE_CTRL ... TEGRA186_DSPK_CODEC_CTRL: + return true; + default: + return false; + } +} + +static bool tegra186_dspk_rd_reg(struct device *dev, unsigned int reg) +{ + if (tegra186_dspk_wr_reg(dev, reg)) + return true; + + switch (reg) { + case TEGRA186_DSPK_RX_STATUS: + case TEGRA186_DSPK_RX_INT_STATUS: + case TEGRA186_DSPK_STATUS: + case TEGRA186_DSPK_INT_STATUS: + return true; + default: + return false; + } +} + +static bool tegra186_dspk_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case TEGRA186_DSPK_RX_STATUS: + case TEGRA186_DSPK_RX_INT_STATUS: + case TEGRA186_DSPK_STATUS: + case TEGRA186_DSPK_INT_STATUS: + return true; + default: + return false; + } +} + +static const struct regmap_config tegra186_dspk_regmap = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = TEGRA186_DSPK_CODEC_CTRL, + .writeable_reg = tegra186_dspk_wr_reg, + .readable_reg = tegra186_dspk_rd_reg, + .volatile_reg = tegra186_dspk_volatile_reg, + .reg_defaults = tegra186_dspk_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(tegra186_dspk_reg_defaults), + .cache_type = REGCACHE_FLAT, +}; + +static const struct of_device_id tegra186_dspk_of_match[] = { + { .compatible = "nvidia,tegra186-dspk" }, + {}, +}; +MODULE_DEVICE_TABLE(of, tegra186_dspk_of_match); + +static int tegra186_dspk_platform_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct tegra186_dspk *dspk; + void __iomem *regs; + int err; + + dspk = devm_kzalloc(dev, sizeof(*dspk), GFP_KERNEL); + if (!dspk) + return -ENOMEM; + + dspk->osr_val = DSPK_OSR_64; + dspk->lrsel = DSPK_LRSEL_LEFT; + dspk->ch_sel = DSPK_CH_SELECT_STEREO; + dspk->mono_to_stereo = 0; /* "Zero" */ + + dev_set_drvdata(dev, dspk); + + dspk->clk_dspk = devm_clk_get(dev, "dspk"); + if (IS_ERR(dspk->clk_dspk)) { + dev_err(dev, "can't retrieve DSPK clock\n"); + return PTR_ERR(dspk->clk_dspk); + } + + regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + dspk->regmap = devm_regmap_init_mmio(dev, regs, &tegra186_dspk_regmap); + if (IS_ERR(dspk->regmap)) { + dev_err(dev, "regmap init failed\n"); + return PTR_ERR(dspk->regmap); + } + + regcache_cache_only(dspk->regmap, true); + + err = devm_snd_soc_register_component(dev, &tegra186_dspk_cmpnt, + tegra186_dspk_dais, + ARRAY_SIZE(tegra186_dspk_dais)); + if (err) { + dev_err(dev, "can't register DSPK component, err: %d\n", + err); + return err; + } + + pm_runtime_enable(dev); + + return 0; +} + +static void tegra186_dspk_platform_remove(struct platform_device *pdev) +{ + pm_runtime_disable(&pdev->dev); +} + +static const struct dev_pm_ops tegra186_dspk_pm_ops = { + SET_RUNTIME_PM_OPS(tegra186_dspk_runtime_suspend, + tegra186_dspk_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) +}; + +static struct platform_driver tegra186_dspk_driver = { + .driver = { + .name = "tegra186-dspk", + .of_match_table = tegra186_dspk_of_match, + .pm = &tegra186_dspk_pm_ops, + }, + .probe = tegra186_dspk_platform_probe, + .remove_new = tegra186_dspk_platform_remove, +}; +module_platform_driver(tegra186_dspk_driver); + +MODULE_AUTHOR("Mohan Kumar <mkumard@nvidia.com>"); +MODULE_AUTHOR("Sameer Pujar <spujar@nvidia.com>"); +MODULE_DESCRIPTION("Tegra186 ASoC DSPK driver"); +MODULE_LICENSE("GPL v2"); |