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Diffstat (limited to 'sound/soc/tegra/tegra210_ope.c')
-rw-r--r--sound/soc/tegra/tegra210_ope.c419
1 files changed, 419 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra210_ope.c b/sound/soc/tegra/tegra210_ope.c
new file mode 100644
index 000000000..3dd2bdec6
--- /dev/null
+++ b/sound/soc/tegra/tegra210_ope.c
@@ -0,0 +1,419 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// tegra210_ope.c - Tegra210 OPE driver
+//
+// Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/io.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.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "tegra210_mbdrc.h"
+#include "tegra210_ope.h"
+#include "tegra210_peq.h"
+#include "tegra_cif.h"
+
+static const struct reg_default tegra210_ope_reg_defaults[] = {
+ { TEGRA210_OPE_RX_INT_MASK, 0x00000001},
+ { TEGRA210_OPE_RX_CIF_CTRL, 0x00007700},
+ { TEGRA210_OPE_TX_INT_MASK, 0x00000001},
+ { TEGRA210_OPE_TX_CIF_CTRL, 0x00007700},
+ { TEGRA210_OPE_CG, 0x1},
+};
+
+static int tegra210_ope_set_audio_cif(struct tegra210_ope *ope,
+ struct snd_pcm_hw_params *params,
+ unsigned int reg)
+{
+ int channels, audio_bits;
+ struct tegra_cif_conf cif_conf;
+
+ memset(&cif_conf, 0, sizeof(struct tegra_cif_conf));
+
+ channels = params_channels(params);
+ if (channels < 2)
+ return -EINVAL;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ audio_bits = TEGRA_ACIF_BITS_16;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ audio_bits = TEGRA_ACIF_BITS_32;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ cif_conf.audio_ch = channels;
+ cif_conf.client_ch = channels;
+ cif_conf.audio_bits = audio_bits;
+ cif_conf.client_bits = audio_bits;
+
+ tegra_set_cif(ope->regmap, reg, &cif_conf);
+
+ return 0;
+}
+
+static int tegra210_ope_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct device *dev = dai->dev;
+ struct tegra210_ope *ope = snd_soc_dai_get_drvdata(dai);
+ int err;
+
+ /* Set RX and TX CIF */
+ err = tegra210_ope_set_audio_cif(ope, params,
+ TEGRA210_OPE_RX_CIF_CTRL);
+ if (err) {
+ dev_err(dev, "Can't set OPE RX CIF: %d\n", err);
+ return err;
+ }
+
+ err = tegra210_ope_set_audio_cif(ope, params,
+ TEGRA210_OPE_TX_CIF_CTRL);
+ if (err) {
+ dev_err(dev, "Can't set OPE TX CIF: %d\n", err);
+ return err;
+ }
+
+ tegra210_mbdrc_hw_params(dai->component);
+
+ return err;
+}
+
+static int tegra210_ope_component_probe(struct snd_soc_component *cmpnt)
+{
+ struct tegra210_ope *ope = dev_get_drvdata(cmpnt->dev);
+
+ tegra210_peq_component_init(cmpnt);
+ tegra210_mbdrc_component_init(cmpnt);
+
+ /*
+ * The OPE, PEQ and MBDRC functionalities are combined under one
+ * device registered by OPE driver. In fact OPE HW block includes
+ * sub blocks PEQ and MBDRC. However driver registers separate
+ * regmap interfaces for each of these. ASoC core depends on
+ * dev_get_regmap() to populate the regmap field for a given ASoC
+ * component. A component can have one regmap reference and since
+ * the DAPM routes depend on OPE regmap only, below explicit
+ * assignment is done to highlight this. This is needed for ASoC
+ * core to access correct regmap during DAPM path setup.
+ */
+ snd_soc_component_init_regmap(cmpnt, ope->regmap);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops tegra210_ope_dai_ops = {
+ .hw_params = tegra210_ope_hw_params,
+};
+
+static struct snd_soc_dai_driver tegra210_ope_dais[] = {
+ {
+ .name = "OPE-RX-CIF",
+ .playback = {
+ .stream_name = "RX-CIF-Playback",
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .capture = {
+ .stream_name = "RX-CIF-Capture",
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ },
+ {
+ .name = "OPE-TX-CIF",
+ .playback = {
+ .stream_name = "TX-CIF-Playback",
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .capture = {
+ .stream_name = "TX-CIF-Capture",
+ .channels_min = 1,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = &tegra210_ope_dai_ops,
+ }
+};
+
+static const struct snd_soc_dapm_widget tegra210_ope_widgets[] = {
+ SND_SOC_DAPM_AIF_IN("RX", NULL, 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("TX", NULL, 0, TEGRA210_OPE_ENABLE,
+ TEGRA210_OPE_EN_SHIFT, 0),
+};
+
+#define OPE_ROUTES(sname) \
+ { "RX XBAR-" sname, NULL, "XBAR-TX" }, \
+ { "RX-CIF-" sname, NULL, "RX XBAR-" sname }, \
+ { "RX", NULL, "RX-CIF-" sname }, \
+ { "TX-CIF-" sname, NULL, "TX" }, \
+ { "TX XBAR-" sname, NULL, "TX-CIF-" sname }, \
+ { "XBAR-RX", NULL, "TX XBAR-" sname }
+
+static const struct snd_soc_dapm_route tegra210_ope_routes[] = {
+ { "TX", NULL, "RX" },
+ OPE_ROUTES("Playback"),
+ OPE_ROUTES("Capture"),
+};
+
+static const char * const tegra210_ope_data_dir_text[] = {
+ "MBDRC to PEQ",
+ "PEQ to MBDRC"
+};
+
+static const struct soc_enum tegra210_ope_data_dir_enum =
+ SOC_ENUM_SINGLE(TEGRA210_OPE_DIR, TEGRA210_OPE_DIR_SHIFT,
+ 2, tegra210_ope_data_dir_text);
+
+static int tegra210_ope_get_data_dir(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+
+ ucontrol->value.enumerated.item[0] = ope->data_dir;
+
+ return 0;
+}
+
+static int tegra210_ope_put_data_dir(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+ unsigned int value = ucontrol->value.enumerated.item[0];
+
+ if (value == ope->data_dir)
+ return 0;
+
+ ope->data_dir = value;
+
+ return 1;
+}
+
+static const struct snd_kcontrol_new tegra210_ope_controls[] = {
+ SOC_ENUM_EXT("Data Flow Direction", tegra210_ope_data_dir_enum,
+ tegra210_ope_get_data_dir, tegra210_ope_put_data_dir),
+};
+
+static const struct snd_soc_component_driver tegra210_ope_cmpnt = {
+ .probe = tegra210_ope_component_probe,
+ .dapm_widgets = tegra210_ope_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tegra210_ope_widgets),
+ .dapm_routes = tegra210_ope_routes,
+ .num_dapm_routes = ARRAY_SIZE(tegra210_ope_routes),
+ .controls = tegra210_ope_controls,
+ .num_controls = ARRAY_SIZE(tegra210_ope_controls),
+};
+
+static bool tegra210_ope_wr_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TEGRA210_OPE_RX_INT_MASK ... TEGRA210_OPE_RX_CIF_CTRL:
+ case TEGRA210_OPE_TX_INT_MASK ... TEGRA210_OPE_TX_CIF_CTRL:
+ case TEGRA210_OPE_ENABLE ... TEGRA210_OPE_CG:
+ case TEGRA210_OPE_DIR:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool tegra210_ope_rd_reg(struct device *dev, unsigned int reg)
+{
+ if (tegra210_ope_wr_reg(dev, reg))
+ return true;
+
+ switch (reg) {
+ case TEGRA210_OPE_RX_STATUS:
+ case TEGRA210_OPE_RX_INT_STATUS:
+ case TEGRA210_OPE_TX_STATUS:
+ case TEGRA210_OPE_TX_INT_STATUS:
+ case TEGRA210_OPE_STATUS:
+ case TEGRA210_OPE_INT_STATUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool tegra210_ope_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TEGRA210_OPE_RX_STATUS:
+ case TEGRA210_OPE_RX_INT_STATUS:
+ case TEGRA210_OPE_TX_STATUS:
+ case TEGRA210_OPE_TX_INT_STATUS:
+ case TEGRA210_OPE_SOFT_RESET:
+ case TEGRA210_OPE_STATUS:
+ case TEGRA210_OPE_INT_STATUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config tegra210_ope_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = TEGRA210_OPE_DIR,
+ .writeable_reg = tegra210_ope_wr_reg,
+ .readable_reg = tegra210_ope_rd_reg,
+ .volatile_reg = tegra210_ope_volatile_reg,
+ .reg_defaults = tegra210_ope_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(tegra210_ope_reg_defaults),
+ .cache_type = REGCACHE_FLAT,
+};
+
+static int tegra210_ope_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct tegra210_ope *ope;
+ void __iomem *regs;
+ int err;
+
+ ope = devm_kzalloc(dev, sizeof(*ope), GFP_KERNEL);
+ if (!ope)
+ return -ENOMEM;
+
+ regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+
+ ope->regmap = devm_regmap_init_mmio(dev, regs,
+ &tegra210_ope_regmap_config);
+ if (IS_ERR(ope->regmap)) {
+ dev_err(dev, "regmap init failed\n");
+ return PTR_ERR(ope->regmap);
+ }
+
+ regcache_cache_only(ope->regmap, true);
+
+ dev_set_drvdata(dev, ope);
+
+ err = tegra210_peq_regmap_init(pdev);
+ if (err < 0) {
+ dev_err(dev, "PEQ init failed\n");
+ return err;
+ }
+
+ err = tegra210_mbdrc_regmap_init(pdev);
+ if (err < 0) {
+ dev_err(dev, "MBDRC init failed\n");
+ return err;
+ }
+
+ err = devm_snd_soc_register_component(dev, &tegra210_ope_cmpnt,
+ tegra210_ope_dais,
+ ARRAY_SIZE(tegra210_ope_dais));
+ if (err) {
+ dev_err(dev, "can't register OPE component, err: %d\n", err);
+ return err;
+ }
+
+ pm_runtime_enable(dev);
+
+ return 0;
+}
+
+static int tegra210_ope_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
+static int __maybe_unused tegra210_ope_runtime_suspend(struct device *dev)
+{
+ struct tegra210_ope *ope = dev_get_drvdata(dev);
+
+ tegra210_peq_save(ope->peq_regmap, ope->peq_biquad_gains,
+ ope->peq_biquad_shifts);
+
+ regcache_cache_only(ope->mbdrc_regmap, true);
+ regcache_cache_only(ope->peq_regmap, true);
+ regcache_cache_only(ope->regmap, true);
+
+ regcache_mark_dirty(ope->regmap);
+ regcache_mark_dirty(ope->peq_regmap);
+ regcache_mark_dirty(ope->mbdrc_regmap);
+
+ return 0;
+}
+
+static int __maybe_unused tegra210_ope_runtime_resume(struct device *dev)
+{
+ struct tegra210_ope *ope = dev_get_drvdata(dev);
+
+ regcache_cache_only(ope->regmap, false);
+ regcache_cache_only(ope->peq_regmap, false);
+ regcache_cache_only(ope->mbdrc_regmap, false);
+
+ regcache_sync(ope->regmap);
+ regcache_sync(ope->peq_regmap);
+ regcache_sync(ope->mbdrc_regmap);
+
+ tegra210_peq_restore(ope->peq_regmap, ope->peq_biquad_gains,
+ ope->peq_biquad_shifts);
+
+ return 0;
+}
+
+static const struct dev_pm_ops tegra210_ope_pm_ops = {
+ SET_RUNTIME_PM_OPS(tegra210_ope_runtime_suspend,
+ tegra210_ope_runtime_resume, NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+};
+
+static const struct of_device_id tegra210_ope_of_match[] = {
+ { .compatible = "nvidia,tegra210-ope" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tegra210_ope_of_match);
+
+static struct platform_driver tegra210_ope_driver = {
+ .driver = {
+ .name = "tegra210-ope",
+ .of_match_table = tegra210_ope_of_match,
+ .pm = &tegra210_ope_pm_ops,
+ },
+ .probe = tegra210_ope_probe,
+ .remove = tegra210_ope_remove,
+};
+module_platform_driver(tegra210_ope_driver)
+
+MODULE_AUTHOR("Sumit Bhattacharya <sumitb@nvidia.com>");
+MODULE_DESCRIPTION("Tegra210 OPE ASoC driver");
+MODULE_LICENSE("GPL");