diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/qcom/lpass-cpu.c | 998 |
1 files changed, 998 insertions, 0 deletions
diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c new file mode 100644 index 000000000..9e70c193d --- /dev/null +++ b/sound/soc/qcom/lpass-cpu.c @@ -0,0 +1,998 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. + * + * lpass-cpu.c -- ALSA SoC CPU DAI driver for QTi LPASS + */ + +#include <linux/clk.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <linux/regmap.h> +#include <sound/soc.h> +#include <sound/soc-dai.h> +#include "lpass-lpaif-reg.h" +#include "lpass.h" + +#define LPASS_CPU_MAX_MI2S_LINES 4 +#define LPASS_CPU_I2S_SD0_MASK BIT(0) +#define LPASS_CPU_I2S_SD1_MASK BIT(1) +#define LPASS_CPU_I2S_SD2_MASK BIT(2) +#define LPASS_CPU_I2S_SD3_MASK BIT(3) +#define LPASS_CPU_I2S_SD0_1_MASK GENMASK(1, 0) +#define LPASS_CPU_I2S_SD2_3_MASK GENMASK(3, 2) +#define LPASS_CPU_I2S_SD0_1_2_MASK GENMASK(2, 0) +#define LPASS_CPU_I2S_SD0_1_2_3_MASK GENMASK(3, 0) + +static int lpass_cpu_init_i2sctl_bitfields(struct device *dev, + struct lpaif_i2sctl *i2sctl, struct regmap *map) +{ + struct lpass_data *drvdata = dev_get_drvdata(dev); + struct lpass_variant *v = drvdata->variant; + + i2sctl->loopback = devm_regmap_field_alloc(dev, map, v->loopback); + i2sctl->spken = devm_regmap_field_alloc(dev, map, v->spken); + i2sctl->spkmode = devm_regmap_field_alloc(dev, map, v->spkmode); + i2sctl->spkmono = devm_regmap_field_alloc(dev, map, v->spkmono); + i2sctl->micen = devm_regmap_field_alloc(dev, map, v->micen); + i2sctl->micmode = devm_regmap_field_alloc(dev, map, v->micmode); + i2sctl->micmono = devm_regmap_field_alloc(dev, map, v->micmono); + i2sctl->wssrc = devm_regmap_field_alloc(dev, map, v->wssrc); + i2sctl->bitwidth = devm_regmap_field_alloc(dev, map, v->bitwidth); + + if (IS_ERR(i2sctl->loopback) || IS_ERR(i2sctl->spken) || + IS_ERR(i2sctl->spkmode) || IS_ERR(i2sctl->spkmono) || + IS_ERR(i2sctl->micen) || IS_ERR(i2sctl->micmode) || + IS_ERR(i2sctl->micmono) || IS_ERR(i2sctl->wssrc) || + IS_ERR(i2sctl->bitwidth)) + return -EINVAL; + + return 0; +} + +static int lpass_cpu_daiops_set_sysclk(struct snd_soc_dai *dai, int clk_id, + unsigned int freq, int dir) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + int ret; + + ret = clk_set_rate(drvdata->mi2s_osr_clk[dai->driver->id], freq); + if (ret) + dev_err(dai->dev, "error setting mi2s osrclk to %u: %d\n", + freq, ret); + + return ret; +} + +static int lpass_cpu_daiops_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + int ret; + + ret = clk_prepare_enable(drvdata->mi2s_osr_clk[dai->driver->id]); + if (ret) { + dev_err(dai->dev, "error in enabling mi2s osr clk: %d\n", ret); + return ret; + } + ret = clk_prepare(drvdata->mi2s_bit_clk[dai->driver->id]); + if (ret) { + dev_err(dai->dev, "error in enabling mi2s bit clk: %d\n", ret); + clk_disable_unprepare(drvdata->mi2s_osr_clk[dai->driver->id]); + return ret; + } + return 0; +} + +static void lpass_cpu_daiops_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + struct lpaif_i2sctl *i2sctl = drvdata->i2sctl; + unsigned int id = dai->driver->id; + + clk_disable_unprepare(drvdata->mi2s_osr_clk[dai->driver->id]); + /* + * Ensure LRCLK is disabled even in device node validation. + * Will not impact if disabled in lpass_cpu_daiops_trigger() + * suspend. + */ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + regmap_fields_write(i2sctl->spken, id, LPAIF_I2SCTL_SPKEN_DISABLE); + else + regmap_fields_write(i2sctl->micen, id, LPAIF_I2SCTL_MICEN_DISABLE); + + /* + * BCLK may not be enabled if lpass_cpu_daiops_prepare is called before + * lpass_cpu_daiops_shutdown. It's paired with the clk_enable in + * lpass_cpu_daiops_prepare. + */ + if (drvdata->mi2s_was_prepared[dai->driver->id]) { + drvdata->mi2s_was_prepared[dai->driver->id] = false; + clk_disable(drvdata->mi2s_bit_clk[dai->driver->id]); + } + + clk_unprepare(drvdata->mi2s_bit_clk[dai->driver->id]); +} + +static int lpass_cpu_daiops_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + struct lpaif_i2sctl *i2sctl = drvdata->i2sctl; + unsigned int id = dai->driver->id; + snd_pcm_format_t format = params_format(params); + unsigned int channels = params_channels(params); + unsigned int rate = params_rate(params); + unsigned int mode; + unsigned int regval; + int bitwidth, ret; + + bitwidth = snd_pcm_format_width(format); + if (bitwidth < 0) { + dev_err(dai->dev, "invalid bit width given: %d\n", bitwidth); + return bitwidth; + } + + ret = regmap_fields_write(i2sctl->loopback, id, + LPAIF_I2SCTL_LOOPBACK_DISABLE); + if (ret) { + dev_err(dai->dev, "error updating loopback field: %d\n", ret); + return ret; + } + + ret = regmap_fields_write(i2sctl->wssrc, id, + LPAIF_I2SCTL_WSSRC_INTERNAL); + if (ret) { + dev_err(dai->dev, "error updating wssrc field: %d\n", ret); + return ret; + } + + switch (bitwidth) { + case 16: + regval = LPAIF_I2SCTL_BITWIDTH_16; + break; + case 24: + regval = LPAIF_I2SCTL_BITWIDTH_24; + break; + case 32: + regval = LPAIF_I2SCTL_BITWIDTH_32; + break; + default: + dev_err(dai->dev, "invalid bitwidth given: %d\n", bitwidth); + return -EINVAL; + } + + ret = regmap_fields_write(i2sctl->bitwidth, id, regval); + if (ret) { + dev_err(dai->dev, "error updating bitwidth field: %d\n", ret); + return ret; + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + mode = drvdata->mi2s_playback_sd_mode[id]; + else + mode = drvdata->mi2s_capture_sd_mode[id]; + + if (!mode) { + dev_err(dai->dev, "no line is assigned\n"); + return -EINVAL; + } + + switch (channels) { + case 1: + case 2: + switch (mode) { + case LPAIF_I2SCTL_MODE_QUAD01: + case LPAIF_I2SCTL_MODE_6CH: + case LPAIF_I2SCTL_MODE_8CH: + mode = LPAIF_I2SCTL_MODE_SD0; + break; + case LPAIF_I2SCTL_MODE_QUAD23: + mode = LPAIF_I2SCTL_MODE_SD2; + break; + } + + break; + case 4: + if (mode < LPAIF_I2SCTL_MODE_QUAD01) { + dev_err(dai->dev, "cannot configure 4 channels with mode %d\n", + mode); + return -EINVAL; + } + + switch (mode) { + case LPAIF_I2SCTL_MODE_6CH: + case LPAIF_I2SCTL_MODE_8CH: + mode = LPAIF_I2SCTL_MODE_QUAD01; + break; + } + break; + case 6: + if (mode < LPAIF_I2SCTL_MODE_6CH) { + dev_err(dai->dev, "cannot configure 6 channels with mode %d\n", + mode); + return -EINVAL; + } + + switch (mode) { + case LPAIF_I2SCTL_MODE_8CH: + mode = LPAIF_I2SCTL_MODE_6CH; + break; + } + break; + case 8: + if (mode < LPAIF_I2SCTL_MODE_8CH) { + dev_err(dai->dev, "cannot configure 8 channels with mode %d\n", + mode); + return -EINVAL; + } + break; + default: + dev_err(dai->dev, "invalid channels given: %u\n", channels); + return -EINVAL; + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + ret = regmap_fields_write(i2sctl->spkmode, id, + LPAIF_I2SCTL_SPKMODE(mode)); + if (ret) { + dev_err(dai->dev, "error writing to i2sctl spkr mode: %d\n", + ret); + return ret; + } + if (channels >= 2) + ret = regmap_fields_write(i2sctl->spkmono, id, + LPAIF_I2SCTL_SPKMONO_STEREO); + else + ret = regmap_fields_write(i2sctl->spkmono, id, + LPAIF_I2SCTL_SPKMONO_MONO); + } else { + ret = regmap_fields_write(i2sctl->micmode, id, + LPAIF_I2SCTL_MICMODE(mode)); + if (ret) { + dev_err(dai->dev, "error writing to i2sctl mic mode: %d\n", + ret); + return ret; + } + if (channels >= 2) + ret = regmap_fields_write(i2sctl->micmono, id, + LPAIF_I2SCTL_MICMONO_STEREO); + else + ret = regmap_fields_write(i2sctl->micmono, id, + LPAIF_I2SCTL_MICMONO_MONO); + } + + if (ret) { + dev_err(dai->dev, "error writing to i2sctl channels mode: %d\n", + ret); + return ret; + } + + ret = clk_set_rate(drvdata->mi2s_bit_clk[id], + rate * bitwidth * 2); + if (ret) { + dev_err(dai->dev, "error setting mi2s bitclk to %u: %d\n", + rate * bitwidth * 2, ret); + return ret; + } + + return 0; +} + +static int lpass_cpu_daiops_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + struct lpaif_i2sctl *i2sctl = drvdata->i2sctl; + unsigned int id = dai->driver->id; + int ret = -EINVAL; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + /* + * Ensure lpass BCLK/LRCLK is enabled during + * device resume as lpass_cpu_daiops_prepare() is not called + * after the device resumes. We don't check mi2s_was_prepared before + * enable/disable BCLK in trigger events because: + * 1. These trigger events are paired, so the BCLK + * enable_count is balanced. + * 2. the BCLK can be shared (ex: headset and headset mic), + * we need to increase the enable_count so that we don't + * turn off the shared BCLK while other devices are using + * it. + */ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + ret = regmap_fields_write(i2sctl->spken, id, + LPAIF_I2SCTL_SPKEN_ENABLE); + } else { + ret = regmap_fields_write(i2sctl->micen, id, + LPAIF_I2SCTL_MICEN_ENABLE); + } + if (ret) + dev_err(dai->dev, "error writing to i2sctl reg: %d\n", + ret); + + ret = clk_enable(drvdata->mi2s_bit_clk[id]); + if (ret) { + dev_err(dai->dev, "error in enabling mi2s bit clk: %d\n", ret); + clk_disable(drvdata->mi2s_osr_clk[id]); + return ret; + } + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + /* + * To ensure lpass BCLK/LRCLK is disabled during + * device suspend. + */ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + ret = regmap_fields_write(i2sctl->spken, id, + LPAIF_I2SCTL_SPKEN_DISABLE); + } else { + ret = regmap_fields_write(i2sctl->micen, id, + LPAIF_I2SCTL_MICEN_DISABLE); + } + if (ret) + dev_err(dai->dev, "error writing to i2sctl reg: %d\n", + ret); + + clk_disable(drvdata->mi2s_bit_clk[dai->driver->id]); + + break; + } + + return ret; +} + +static int lpass_cpu_daiops_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + struct lpaif_i2sctl *i2sctl = drvdata->i2sctl; + unsigned int id = dai->driver->id; + int ret; + + /* + * Ensure lpass BCLK/LRCLK is enabled bit before playback/capture + * data flow starts. This allows other codec to have some delay before + * the data flow. + * (ex: to drop start up pop noise before capture starts). + */ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + ret = regmap_fields_write(i2sctl->spken, id, LPAIF_I2SCTL_SPKEN_ENABLE); + else + ret = regmap_fields_write(i2sctl->micen, id, LPAIF_I2SCTL_MICEN_ENABLE); + + if (ret) { + dev_err(dai->dev, "error writing to i2sctl reg: %d\n", ret); + return ret; + } + + /* + * Check mi2s_was_prepared before enabling BCLK as lpass_cpu_daiops_prepare can + * be called multiple times. It's paired with the clk_disable in + * lpass_cpu_daiops_shutdown. + */ + if (!drvdata->mi2s_was_prepared[dai->driver->id]) { + ret = clk_enable(drvdata->mi2s_bit_clk[id]); + if (ret) { + dev_err(dai->dev, "error in enabling mi2s bit clk: %d\n", ret); + return ret; + } + drvdata->mi2s_was_prepared[dai->driver->id] = true; + } + return 0; +} + +const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops = { + .set_sysclk = lpass_cpu_daiops_set_sysclk, + .startup = lpass_cpu_daiops_startup, + .shutdown = lpass_cpu_daiops_shutdown, + .hw_params = lpass_cpu_daiops_hw_params, + .trigger = lpass_cpu_daiops_trigger, + .prepare = lpass_cpu_daiops_prepare, +}; +EXPORT_SYMBOL_GPL(asoc_qcom_lpass_cpu_dai_ops); + +int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + int ret; + + /* ensure audio hardware is disabled */ + ret = regmap_write(drvdata->lpaif_map, + LPAIF_I2SCTL_REG(drvdata->variant, dai->driver->id), 0); + if (ret) + dev_err(dai->dev, "error writing to i2sctl reg: %d\n", ret); + + return ret; +} +EXPORT_SYMBOL_GPL(asoc_qcom_lpass_cpu_dai_probe); + +static int asoc_qcom_of_xlate_dai_name(struct snd_soc_component *component, + struct of_phandle_args *args, + const char **dai_name) +{ + struct lpass_data *drvdata = snd_soc_component_get_drvdata(component); + struct lpass_variant *variant = drvdata->variant; + int id = args->args[0]; + int ret = -EINVAL; + int i; + + for (i = 0; i < variant->num_dai; i++) { + if (variant->dai_driver[i].id == id) { + *dai_name = variant->dai_driver[i].name; + ret = 0; + break; + } + } + + return ret; +} + +static const struct snd_soc_component_driver lpass_cpu_comp_driver = { + .name = "lpass-cpu", + .of_xlate_dai_name = asoc_qcom_of_xlate_dai_name, +}; + +static bool lpass_cpu_regmap_writeable(struct device *dev, unsigned int reg) +{ + struct lpass_data *drvdata = dev_get_drvdata(dev); + struct lpass_variant *v = drvdata->variant; + int i; + + for (i = 0; i < v->i2s_ports; ++i) + if (reg == LPAIF_I2SCTL_REG(v, i)) + return true; + + for (i = 0; i < v->irq_ports; ++i) { + if (reg == LPAIF_IRQEN_REG(v, i)) + return true; + if (reg == LPAIF_IRQCLEAR_REG(v, i)) + return true; + } + + for (i = 0; i < v->rdma_channels; ++i) { + if (reg == LPAIF_RDMACTL_REG(v, i)) + return true; + if (reg == LPAIF_RDMABASE_REG(v, i)) + return true; + if (reg == LPAIF_RDMABUFF_REG(v, i)) + return true; + if (reg == LPAIF_RDMAPER_REG(v, i)) + return true; + } + + for (i = 0; i < v->wrdma_channels; ++i) { + if (reg == LPAIF_WRDMACTL_REG(v, i + v->wrdma_channel_start)) + return true; + if (reg == LPAIF_WRDMABASE_REG(v, i + v->wrdma_channel_start)) + return true; + if (reg == LPAIF_WRDMABUFF_REG(v, i + v->wrdma_channel_start)) + return true; + if (reg == LPAIF_WRDMAPER_REG(v, i + v->wrdma_channel_start)) + return true; + } + + return false; +} + +static bool lpass_cpu_regmap_readable(struct device *dev, unsigned int reg) +{ + struct lpass_data *drvdata = dev_get_drvdata(dev); + struct lpass_variant *v = drvdata->variant; + int i; + + for (i = 0; i < v->i2s_ports; ++i) + if (reg == LPAIF_I2SCTL_REG(v, i)) + return true; + + for (i = 0; i < v->irq_ports; ++i) { + if (reg == LPAIF_IRQEN_REG(v, i)) + return true; + if (reg == LPAIF_IRQSTAT_REG(v, i)) + return true; + } + + for (i = 0; i < v->rdma_channels; ++i) { + if (reg == LPAIF_RDMACTL_REG(v, i)) + return true; + if (reg == LPAIF_RDMABASE_REG(v, i)) + return true; + if (reg == LPAIF_RDMABUFF_REG(v, i)) + return true; + if (reg == LPAIF_RDMACURR_REG(v, i)) + return true; + if (reg == LPAIF_RDMAPER_REG(v, i)) + return true; + } + + for (i = 0; i < v->wrdma_channels; ++i) { + if (reg == LPAIF_WRDMACTL_REG(v, i + v->wrdma_channel_start)) + return true; + if (reg == LPAIF_WRDMABASE_REG(v, i + v->wrdma_channel_start)) + return true; + if (reg == LPAIF_WRDMABUFF_REG(v, i + v->wrdma_channel_start)) + return true; + if (reg == LPAIF_WRDMACURR_REG(v, i + v->wrdma_channel_start)) + return true; + if (reg == LPAIF_WRDMAPER_REG(v, i + v->wrdma_channel_start)) + return true; + } + + return false; +} + +static bool lpass_cpu_regmap_volatile(struct device *dev, unsigned int reg) +{ + struct lpass_data *drvdata = dev_get_drvdata(dev); + struct lpass_variant *v = drvdata->variant; + int i; + + for (i = 0; i < v->irq_ports; ++i) + if (reg == LPAIF_IRQSTAT_REG(v, i)) + return true; + + for (i = 0; i < v->rdma_channels; ++i) + if (reg == LPAIF_RDMACURR_REG(v, i)) + return true; + + for (i = 0; i < v->wrdma_channels; ++i) + if (reg == LPAIF_WRDMACURR_REG(v, i + v->wrdma_channel_start)) + return true; + + return false; +} + +static struct regmap_config lpass_cpu_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .writeable_reg = lpass_cpu_regmap_writeable, + .readable_reg = lpass_cpu_regmap_readable, + .volatile_reg = lpass_cpu_regmap_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static int lpass_hdmi_init_bitfields(struct device *dev, struct regmap *map) +{ + struct lpass_data *drvdata = dev_get_drvdata(dev); + struct lpass_variant *v = drvdata->variant; + unsigned int i; + struct lpass_hdmi_tx_ctl *tx_ctl; + struct regmap_field *legacy_en; + struct lpass_vbit_ctrl *vbit_ctl; + struct regmap_field *tx_parity; + struct lpass_dp_metadata_ctl *meta_ctl; + struct lpass_sstream_ctl *sstream_ctl; + struct regmap_field *ch_msb; + struct regmap_field *ch_lsb; + struct lpass_hdmitx_dmactl *tx_dmactl; + int rval; + + tx_ctl = devm_kzalloc(dev, sizeof(*tx_ctl), GFP_KERNEL); + if (!tx_ctl) + return -ENOMEM; + + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->soft_reset, tx_ctl->soft_reset); + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->force_reset, tx_ctl->force_reset); + drvdata->tx_ctl = tx_ctl; + + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->legacy_en, legacy_en); + drvdata->hdmitx_legacy_en = legacy_en; + + vbit_ctl = devm_kzalloc(dev, sizeof(*vbit_ctl), GFP_KERNEL); + if (!vbit_ctl) + return -ENOMEM; + + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->replace_vbit, vbit_ctl->replace_vbit); + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->vbit_stream, vbit_ctl->vbit_stream); + drvdata->vbit_ctl = vbit_ctl; + + + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->calc_en, tx_parity); + drvdata->hdmitx_parity_calc_en = tx_parity; + + meta_ctl = devm_kzalloc(dev, sizeof(*meta_ctl), GFP_KERNEL); + if (!meta_ctl) + return -ENOMEM; + + rval = devm_regmap_field_bulk_alloc(dev, map, &meta_ctl->mute, &v->mute, 7); + if (rval) + return rval; + drvdata->meta_ctl = meta_ctl; + + sstream_ctl = devm_kzalloc(dev, sizeof(*sstream_ctl), GFP_KERNEL); + if (!sstream_ctl) + return -ENOMEM; + + rval = devm_regmap_field_bulk_alloc(dev, map, &sstream_ctl->sstream_en, &v->sstream_en, 9); + if (rval) + return rval; + + drvdata->sstream_ctl = sstream_ctl; + + for (i = 0; i < LPASS_MAX_HDMI_DMA_CHANNELS; i++) { + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->msb_bits, ch_msb); + drvdata->hdmitx_ch_msb[i] = ch_msb; + + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->lsb_bits, ch_lsb); + drvdata->hdmitx_ch_lsb[i] = ch_lsb; + + tx_dmactl = devm_kzalloc(dev, sizeof(*tx_dmactl), GFP_KERNEL); + if (!tx_dmactl) + return -ENOMEM; + + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->use_hw_chs, tx_dmactl->use_hw_chs); + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->use_hw_usr, tx_dmactl->use_hw_usr); + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->hw_chs_sel, tx_dmactl->hw_chs_sel); + QCOM_REGMAP_FIELD_ALLOC(dev, map, v->hw_usr_sel, tx_dmactl->hw_usr_sel); + drvdata->hdmi_tx_dmactl[i] = tx_dmactl; + } + return 0; +} + +static bool lpass_hdmi_regmap_writeable(struct device *dev, unsigned int reg) +{ + struct lpass_data *drvdata = dev_get_drvdata(dev); + struct lpass_variant *v = drvdata->variant; + int i; + + if (reg == LPASS_HDMI_TX_CTL_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_LEGACY_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_VBIT_CTL_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_PARITY_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_DP_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_SSTREAM_ADDR(v)) + return true; + if (reg == LPASS_HDMITX_APP_IRQEN_REG(v)) + return true; + if (reg == LPASS_HDMITX_APP_IRQCLEAR_REG(v)) + return true; + + for (i = 0; i < v->hdmi_rdma_channels; i++) { + if (reg == LPASS_HDMI_TX_CH_LSB_ADDR(v, i)) + return true; + if (reg == LPASS_HDMI_TX_CH_MSB_ADDR(v, i)) + return true; + if (reg == LPASS_HDMI_TX_DMA_ADDR(v, i)) + return true; + } + + for (i = 0; i < v->hdmi_rdma_channels; ++i) { + if (reg == LPAIF_HDMI_RDMACTL_REG(v, i)) + return true; + if (reg == LPAIF_HDMI_RDMABASE_REG(v, i)) + return true; + if (reg == LPAIF_HDMI_RDMABUFF_REG(v, i)) + return true; + if (reg == LPAIF_HDMI_RDMAPER_REG(v, i)) + return true; + } + return false; +} + +static bool lpass_hdmi_regmap_readable(struct device *dev, unsigned int reg) +{ + struct lpass_data *drvdata = dev_get_drvdata(dev); + struct lpass_variant *v = drvdata->variant; + int i; + + if (reg == LPASS_HDMI_TX_CTL_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_LEGACY_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_VBIT_CTL_ADDR(v)) + return true; + + for (i = 0; i < v->hdmi_rdma_channels; i++) { + if (reg == LPASS_HDMI_TX_CH_LSB_ADDR(v, i)) + return true; + if (reg == LPASS_HDMI_TX_CH_MSB_ADDR(v, i)) + return true; + if (reg == LPASS_HDMI_TX_DMA_ADDR(v, i)) + return true; + } + + if (reg == LPASS_HDMI_TX_PARITY_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_DP_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_SSTREAM_ADDR(v)) + return true; + if (reg == LPASS_HDMITX_APP_IRQEN_REG(v)) + return true; + if (reg == LPASS_HDMITX_APP_IRQSTAT_REG(v)) + return true; + + for (i = 0; i < v->hdmi_rdma_channels; ++i) { + if (reg == LPAIF_HDMI_RDMACTL_REG(v, i)) + return true; + if (reg == LPAIF_HDMI_RDMABASE_REG(v, i)) + return true; + if (reg == LPAIF_HDMI_RDMABUFF_REG(v, i)) + return true; + if (reg == LPAIF_HDMI_RDMAPER_REG(v, i)) + return true; + if (reg == LPAIF_HDMI_RDMACURR_REG(v, i)) + return true; + } + + return false; +} + +static bool lpass_hdmi_regmap_volatile(struct device *dev, unsigned int reg) +{ + struct lpass_data *drvdata = dev_get_drvdata(dev); + struct lpass_variant *v = drvdata->variant; + int i; + + if (reg == LPASS_HDMITX_APP_IRQSTAT_REG(v)) + return true; + if (reg == LPASS_HDMI_TX_LEGACY_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_VBIT_CTL_ADDR(v)) + return true; + if (reg == LPASS_HDMI_TX_PARITY_ADDR(v)) + return true; + + for (i = 0; i < v->hdmi_rdma_channels; ++i) { + if (reg == LPAIF_HDMI_RDMACURR_REG(v, i)) + return true; + if (reg == LPASS_HDMI_TX_DMA_ADDR(v, i)) + return true; + if (reg == LPASS_HDMI_TX_CH_LSB_ADDR(v, i)) + return true; + if (reg == LPASS_HDMI_TX_CH_MSB_ADDR(v, i)) + return true; + } + return false; +} + +struct regmap_config lpass_hdmi_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .writeable_reg = lpass_hdmi_regmap_writeable, + .readable_reg = lpass_hdmi_regmap_readable, + .volatile_reg = lpass_hdmi_regmap_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static unsigned int of_lpass_cpu_parse_sd_lines(struct device *dev, + struct device_node *node, + const char *name) +{ + unsigned int lines[LPASS_CPU_MAX_MI2S_LINES]; + unsigned int sd_line_mask = 0; + int num_lines, i; + + num_lines = of_property_read_variable_u32_array(node, name, lines, 0, + LPASS_CPU_MAX_MI2S_LINES); + if (num_lines < 0) + return LPAIF_I2SCTL_MODE_NONE; + + for (i = 0; i < num_lines; i++) + sd_line_mask |= BIT(lines[i]); + + switch (sd_line_mask) { + case LPASS_CPU_I2S_SD0_MASK: + return LPAIF_I2SCTL_MODE_SD0; + case LPASS_CPU_I2S_SD1_MASK: + return LPAIF_I2SCTL_MODE_SD1; + case LPASS_CPU_I2S_SD2_MASK: + return LPAIF_I2SCTL_MODE_SD2; + case LPASS_CPU_I2S_SD3_MASK: + return LPAIF_I2SCTL_MODE_SD3; + case LPASS_CPU_I2S_SD0_1_MASK: + return LPAIF_I2SCTL_MODE_QUAD01; + case LPASS_CPU_I2S_SD2_3_MASK: + return LPAIF_I2SCTL_MODE_QUAD23; + case LPASS_CPU_I2S_SD0_1_2_MASK: + return LPAIF_I2SCTL_MODE_6CH; + case LPASS_CPU_I2S_SD0_1_2_3_MASK: + return LPAIF_I2SCTL_MODE_8CH; + default: + dev_err(dev, "Unsupported SD line mask: %#x\n", sd_line_mask); + return LPAIF_I2SCTL_MODE_NONE; + } +} + +static void of_lpass_cpu_parse_dai_data(struct device *dev, + struct lpass_data *data) +{ + struct device_node *node; + int ret, i, id; + + /* Allow all channels by default for backwards compatibility */ + for (i = 0; i < data->variant->num_dai; i++) { + id = data->variant->dai_driver[i].id; + data->mi2s_playback_sd_mode[id] = LPAIF_I2SCTL_MODE_8CH; + data->mi2s_capture_sd_mode[id] = LPAIF_I2SCTL_MODE_8CH; + } + + for_each_child_of_node(dev->of_node, node) { + ret = of_property_read_u32(node, "reg", &id); + if (ret || id < 0) { + dev_err(dev, "valid dai id not found: %d\n", ret); + continue; + } + if (id == LPASS_DP_RX) { + data->hdmi_port_enable = 1; + } else { + data->mi2s_playback_sd_mode[id] = + of_lpass_cpu_parse_sd_lines(dev, node, + "qcom,playback-sd-lines"); + data->mi2s_capture_sd_mode[id] = + of_lpass_cpu_parse_sd_lines(dev, node, + "qcom,capture-sd-lines"); + } + } +} + +int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev) +{ + struct lpass_data *drvdata; + struct device_node *dsp_of_node; + struct resource *res; + struct lpass_variant *variant; + struct device *dev = &pdev->dev; + const struct of_device_id *match; + int ret, i, dai_id; + + dsp_of_node = of_parse_phandle(pdev->dev.of_node, "qcom,adsp", 0); + if (dsp_of_node) { + dev_err(dev, "DSP exists and holds audio resources\n"); + of_node_put(dsp_of_node); + return -EBUSY; + } + + drvdata = devm_kzalloc(dev, sizeof(struct lpass_data), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + platform_set_drvdata(pdev, drvdata); + + match = of_match_device(dev->driver->of_match_table, dev); + if (!match || !match->data) + return -EINVAL; + + drvdata->variant = (struct lpass_variant *)match->data; + variant = drvdata->variant; + + of_lpass_cpu_parse_dai_data(dev, drvdata); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lpass-lpaif"); + + drvdata->lpaif = devm_ioremap_resource(dev, res); + if (IS_ERR((void const __force *)drvdata->lpaif)) { + dev_err(dev, "error mapping reg resource: %ld\n", + PTR_ERR((void const __force *)drvdata->lpaif)); + return PTR_ERR((void const __force *)drvdata->lpaif); + } + + lpass_cpu_regmap_config.max_register = LPAIF_WRDMAPER_REG(variant, + variant->wrdma_channels + + variant->wrdma_channel_start); + + drvdata->lpaif_map = devm_regmap_init_mmio(dev, drvdata->lpaif, + &lpass_cpu_regmap_config); + if (IS_ERR(drvdata->lpaif_map)) { + dev_err(dev, "error initializing regmap: %ld\n", + PTR_ERR(drvdata->lpaif_map)); + return PTR_ERR(drvdata->lpaif_map); + } + + if (drvdata->hdmi_port_enable) { + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lpass-hdmiif"); + + drvdata->hdmiif = devm_ioremap_resource(dev, res); + if (IS_ERR((void const __force *)drvdata->hdmiif)) { + dev_err(dev, "error mapping reg resource: %ld\n", + PTR_ERR((void const __force *)drvdata->hdmiif)); + return PTR_ERR((void const __force *)drvdata->hdmiif); + } + + lpass_hdmi_regmap_config.max_register = LPAIF_HDMI_RDMAPER_REG(variant, + variant->hdmi_rdma_channels - 1); + drvdata->hdmiif_map = devm_regmap_init_mmio(dev, drvdata->hdmiif, + &lpass_hdmi_regmap_config); + if (IS_ERR(drvdata->hdmiif_map)) { + dev_err(dev, "error initializing regmap: %ld\n", + PTR_ERR(drvdata->hdmiif_map)); + return PTR_ERR(drvdata->hdmiif_map); + } + } + + if (variant->init) { + ret = variant->init(pdev); + if (ret) { + dev_err(dev, "error initializing variant: %d\n", ret); + return ret; + } + } + + for (i = 0; i < variant->num_dai; i++) { + dai_id = variant->dai_driver[i].id; + if (dai_id == LPASS_DP_RX) + continue; + + drvdata->mi2s_osr_clk[dai_id] = devm_clk_get_optional(dev, + variant->dai_osr_clk_names[i]); + drvdata->mi2s_bit_clk[dai_id] = devm_clk_get(dev, + variant->dai_bit_clk_names[i]); + if (IS_ERR(drvdata->mi2s_bit_clk[dai_id])) { + dev_err(dev, + "error getting %s: %ld\n", + variant->dai_bit_clk_names[i], + PTR_ERR(drvdata->mi2s_bit_clk[dai_id])); + return PTR_ERR(drvdata->mi2s_bit_clk[dai_id]); + } + } + + /* Allocation for i2sctl regmap fields */ + drvdata->i2sctl = devm_kzalloc(&pdev->dev, sizeof(struct lpaif_i2sctl), + GFP_KERNEL); + + /* Initialize bitfields for dai I2SCTL register */ + ret = lpass_cpu_init_i2sctl_bitfields(dev, drvdata->i2sctl, + drvdata->lpaif_map); + if (ret) { + dev_err(dev, "error init i2sctl field: %d\n", ret); + return ret; + } + + if (drvdata->hdmi_port_enable) { + ret = lpass_hdmi_init_bitfields(dev, drvdata->hdmiif_map); + if (ret) { + dev_err(dev, "%s error hdmi init failed\n", __func__); + return ret; + } + } + ret = devm_snd_soc_register_component(dev, + &lpass_cpu_comp_driver, + variant->dai_driver, + variant->num_dai); + if (ret) { + dev_err(dev, "error registering cpu driver: %d\n", ret); + goto err; + } + + ret = asoc_qcom_lpass_platform_register(pdev); + if (ret) { + dev_err(dev, "error registering platform driver: %d\n", ret); + goto err; + } + +err: + return ret; +} +EXPORT_SYMBOL_GPL(asoc_qcom_lpass_cpu_platform_probe); + +int asoc_qcom_lpass_cpu_platform_remove(struct platform_device *pdev) +{ + struct lpass_data *drvdata = platform_get_drvdata(pdev); + + if (drvdata->variant->exit) + drvdata->variant->exit(pdev); + + + return 0; +} +EXPORT_SYMBOL_GPL(asoc_qcom_lpass_cpu_platform_remove); + +MODULE_DESCRIPTION("QTi LPASS CPU Driver"); +MODULE_LICENSE("GPL v2"); |