| /* |
| * Copyright (c) 2014-2017, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/bitops.h> |
| #include <linux/slimbus/slimbus.h> |
| #include <sound/soc.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/msm-slim-dma.h> |
| |
| #define SLIM_DEV_NAME "msm-dai-slim" |
| |
| #define SLIM_DAI_RATES (SNDRV_PCM_RATE_48000 | \ |
| SNDRV_PCM_RATE_8000 | \ |
| SNDRV_PCM_RATE_16000 | \ |
| SNDRV_PCM_RATE_96000 | \ |
| SNDRV_PCM_RATE_192000 | \ |
| SNDRV_PCM_RATE_384000) |
| |
| #define SLIM_DAI_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ |
| SNDRV_PCM_FMTBIT_S24_LE | \ |
| SNDRV_PCM_FMTBIT_S32_LE) |
| |
| #define DAI_STATE_INITIALIZED (0x01 << 0) |
| #define DAI_STATE_PREPARED (0x01 << 1) |
| #define DAI_STATE_RUNNING (0x01 << 2) |
| |
| #define SET_DAI_STATE(status, state) \ |
| (status |= state) |
| |
| #define CLR_DAI_STATE(status, state) \ |
| (status = status & (~state)) |
| |
| enum { |
| MSM_DAI_SLIM0 = 0, |
| NUM_SLIM_DAIS, |
| }; |
| |
| struct msm_slim_dai_data { |
| unsigned int dai_id; |
| u16 *chan_h; |
| u16 *sh_ch; |
| u16 grph; |
| u32 rate; |
| u16 bits; |
| u16 ch_cnt; |
| u8 status; |
| struct snd_soc_dai_driver *dai_drv; |
| struct msm_slim_dma_data dma_data; |
| struct slim_port_cfg port_cfg; |
| }; |
| |
| struct msm_dai_slim_drv_data { |
| struct slim_device *sdev; |
| u16 num_dais; |
| struct msm_slim_dai_data slim_dai_data[NUM_SLIM_DAIS]; |
| }; |
| |
| struct msm_slim_dai_data *msm_slim_get_dai_data( |
| struct msm_dai_slim_drv_data *drv_data, |
| struct snd_soc_dai *dai) |
| { |
| struct msm_slim_dai_data *dai_data_t; |
| int i; |
| |
| for (i = 0; i < drv_data->num_dais; i++) { |
| dai_data_t = &drv_data->slim_dai_data[i]; |
| if (dai_data_t->dai_id == dai->id) |
| return dai_data_t; |
| } |
| |
| dev_err(dai->dev, |
| "%s: no dai data found for dai_id %d\n", |
| __func__, dai->id); |
| return NULL; |
| } |
| |
| static int msm_dai_slim_ch_ctl(struct msm_slim_dma_data *dma_data, |
| struct snd_soc_dai *dai, bool enable) |
| { |
| struct slim_device *sdev; |
| struct msm_dai_slim_drv_data *drv_data; |
| struct msm_slim_dai_data *dai_data; |
| int rc, rc1, i; |
| |
| if (!dma_data || !dma_data->sdev) { |
| pr_err("%s: Invalid %s\n", __func__, |
| (!dma_data) ? "dma_data" : "slim_device"); |
| return -EINVAL; |
| } |
| |
| sdev = dma_data->sdev; |
| drv_data = dev_get_drvdata(&sdev->dev); |
| dai_data = msm_slim_get_dai_data(drv_data, dai); |
| |
| if (!dai_data) { |
| dev_err(dai->dev, |
| "%s: Invalid dai_data for dai_id %d\n", |
| __func__, dai->id); |
| return -EINVAL; |
| } |
| |
| dev_dbg(&sdev->dev, |
| "%s: enable = %s, rate = %u\n", __func__, |
| enable ? "true" : "false", |
| dai_data->rate); |
| |
| if (enable) { |
| if (!(dai_data->status & DAI_STATE_PREPARED)) { |
| dev_err(&sdev->dev, |
| "%s: dai id (%d) has invalid state 0x%x\n", |
| __func__, dai->id, dai_data->status); |
| return -EINVAL; |
| } |
| |
| rc = slim_alloc_mgrports(sdev, |
| SLIM_REQ_DEFAULT, dai_data->ch_cnt, |
| &(dma_data->ph), |
| sizeof(dma_data->ph)); |
| if (rc < 0) { |
| dev_err(&sdev->dev, |
| "%s:alloc mgrport failed rc %d\n", |
| __func__, rc); |
| goto done; |
| } |
| |
| rc = slim_config_mgrports(sdev, &(dma_data->ph), |
| dai_data->ch_cnt, |
| &(dai_data->port_cfg)); |
| if (rc < 0) { |
| dev_err(&sdev->dev, |
| "%s: config mgrport failed rc %d\n", |
| __func__, rc); |
| goto err_done; |
| } |
| |
| for (i = 0; i < dai_data->ch_cnt; i++) { |
| rc = slim_connect_sink(sdev, |
| &dma_data->ph, 1, |
| dai_data->chan_h[i]); |
| if (rc < 0) { |
| dev_err(&sdev->dev, |
| "%s: slim_connect_sink failed, ch = %d, err = %d\n", |
| __func__, i, rc); |
| goto err_done; |
| } |
| } |
| |
| rc = slim_control_ch(sdev, |
| dai_data->grph, |
| SLIM_CH_ACTIVATE, true); |
| if (rc < 0) { |
| dev_err(&sdev->dev, |
| "%s: slim activate ch failed, err = %d\n", |
| __func__, rc); |
| goto err_done; |
| } |
| /* Mark dai status as running */ |
| SET_DAI_STATE(dai_data->status, DAI_STATE_RUNNING); |
| } else { |
| if (!(dai_data->status & DAI_STATE_RUNNING)) { |
| dev_err(&sdev->dev, |
| "%s: dai id (%d) has invalid state 0x%x\n", |
| __func__, dai->id, dai_data->status); |
| return -EINVAL; |
| } |
| |
| rc = slim_control_ch(sdev, |
| dai_data->grph, |
| SLIM_CH_REMOVE, true); |
| if (rc < 0) { |
| dev_err(&sdev->dev, |
| "%s: slim activate ch failed, err = %d\n", |
| __func__, rc); |
| goto done; |
| } |
| |
| rc = slim_dealloc_mgrports(sdev, |
| &dma_data->ph, 1); |
| if (rc < 0) { |
| dev_err(&sdev->dev, |
| "%s: dealloc mgrport failed, err = %d\n", |
| __func__, rc); |
| goto done; |
| } |
| /* clear running state for dai*/ |
| CLR_DAI_STATE(dai_data->status, DAI_STATE_RUNNING); |
| } |
| |
| return rc; |
| |
| err_done: |
| rc1 = slim_dealloc_mgrports(sdev, |
| &dma_data->ph, 1); |
| if (rc1 < 0) |
| dev_err(&sdev->dev, |
| "%s: dealloc mgrport failed, err = %d\n", |
| __func__, rc1); |
| done: |
| return rc; |
| } |
| |
| static int msm_dai_slim_hw_params( |
| struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, |
| struct snd_soc_dai *dai) |
| { |
| struct msm_dai_slim_drv_data *drv_data = dev_get_drvdata(dai->dev); |
| struct msm_slim_dai_data *dai_data; |
| int rc = 0; |
| |
| dai_data = msm_slim_get_dai_data(drv_data, dai); |
| if (!dai_data) { |
| dev_err(dai->dev, |
| "%s: Invalid dai_data for dai_id %d\n", |
| __func__, dai->id); |
| rc = -EINVAL; |
| goto done; |
| } |
| |
| if (!dai_data->ch_cnt || dai_data->ch_cnt != params_channels(params)) { |
| dev_err(dai->dev, "%s: invalid ch_cnt %d %d\n", |
| __func__, dai_data->ch_cnt, params_channels(params)); |
| rc = -EINVAL; |
| goto done; |
| } |
| |
| dai_data->rate = params_rate(params); |
| dai_data->port_cfg.port_opts = SLIM_OPT_NONE; |
| if (dai_data->rate >= SNDRV_PCM_RATE_48000) |
| dai_data->port_cfg.watermark = 16; |
| else |
| dai_data->port_cfg.watermark = 8; |
| |
| switch (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| dai_data->bits = 16; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| dai_data->bits = 24; |
| break; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| dai_data->bits = 32; |
| break; |
| default: |
| dev_err(dai->dev, "%s: invalid format %d\n", __func__, |
| params_format(params)); |
| rc = -EINVAL; |
| goto done; |
| } |
| |
| dev_dbg(dai->dev, "%s: ch_cnt=%u rate=%u, bit_width = %u\n", |
| __func__, dai_data->ch_cnt, dai_data->rate, |
| dai_data->bits); |
| done: |
| return rc; |
| } |
| |
| static int msm_dai_slim_set_channel_map(struct snd_soc_dai *dai, |
| unsigned int tx_num, unsigned int *tx_slot, |
| unsigned int rx_num, unsigned int *rx_slot) |
| { |
| struct msm_dai_slim_drv_data *drv_data = dev_get_drvdata(dai->dev); |
| struct msm_slim_dai_data *dai_data; |
| struct snd_soc_dai_driver *dai_drv; |
| u8 i = 0; |
| |
| dev_dbg(dai->dev, |
| "%s: tx_num=%u, rx_num=%u\n", |
| __func__, tx_num, rx_num); |
| |
| dai_data = msm_slim_get_dai_data(drv_data, dai); |
| if (!dai_data) { |
| dev_err(dai->dev, |
| "%s: Invalid dai_data for dai_id %d\n", |
| __func__, dai->id); |
| return -EINVAL; |
| } |
| |
| dai_drv = dai_data->dai_drv; |
| |
| if (tx_num > dai_drv->capture.channels_max) { |
| dev_err(dai->dev, "%s: tx_num %u max out master port cnt\n", |
| __func__, tx_num); |
| return -EINVAL; |
| } |
| |
| for (i = 0; i < tx_num; i++) |
| dai_data->sh_ch[i] = tx_slot[i]; |
| |
| dai_data->ch_cnt = tx_num; |
| return 0; |
| } |
| |
| static int msm_dai_slim_prepare(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| struct msm_dai_slim_drv_data *drv_data = dev_get_drvdata(dai->dev); |
| struct msm_slim_dma_data *dma_data; |
| struct msm_slim_dai_data *dai_data = NULL; |
| struct slim_ch prop; |
| int rc; |
| u8 i; |
| |
| dai_data = msm_slim_get_dai_data(drv_data, dai); |
| if (!dai_data) { |
| dev_err(dai->dev, |
| "%s: Invalid dai_data for dai %d\n", |
| __func__, dai->id); |
| return -EINVAL; |
| } |
| |
| if (!(dai_data->status & DAI_STATE_INITIALIZED)) { |
| dev_err(dai->dev, |
| "%s: dai id (%d) has invalid state 0x%x\n", |
| __func__, dai->id, dai_data->status); |
| return -EINVAL; |
| } |
| |
| if (dai_data->status & DAI_STATE_PREPARED) { |
| dev_dbg(dai->dev, |
| "%s: dai id (%d) has already prepared.\n", |
| __func__, dai->id); |
| return 0; |
| } |
| |
| dma_data = &dai_data->dma_data; |
| snd_soc_dai_set_dma_data(dai, substream, dma_data); |
| |
| for (i = 0; i < dai_data->ch_cnt; i++) { |
| rc = slim_query_ch(drv_data->sdev, dai_data->sh_ch[i], |
| &dai_data->chan_h[i]); |
| if (rc) { |
| dev_err(dai->dev, "%s:query chan handle failed rc %d\n", |
| __func__, rc); |
| goto error_chan_query; |
| } |
| } |
| |
| /* To decrement the channel ref count*/ |
| for (i = 0; i < dai_data->ch_cnt; i++) |
| slim_dealloc_ch(drv_data->sdev, dai_data->chan_h[i]); |
| |
| prop.prot = SLIM_AUTO_ISO; |
| prop.baser = SLIM_RATE_4000HZ; |
| prop.dataf = SLIM_CH_DATAF_NOT_DEFINED; |
| prop.auxf = SLIM_CH_AUXF_NOT_APPLICABLE; |
| prop.ratem = (dai_data->rate/4000); |
| prop.sampleszbits = dai_data->bits; |
| |
| rc = slim_define_ch(drv_data->sdev, &prop, dai_data->chan_h, |
| dai_data->ch_cnt, true, &dai_data->grph); |
| |
| if (rc) { |
| dev_err(dai->dev, "%s:define chan failed rc %d\n", |
| __func__, rc); |
| goto error_define_chan; |
| } |
| |
| /* Mark stream status as prepared */ |
| SET_DAI_STATE(dai_data->status, DAI_STATE_PREPARED); |
| |
| return rc; |
| |
| error_define_chan: |
| error_chan_query: |
| return rc; |
| } |
| |
| static void msm_dai_slim_shutdown(struct snd_pcm_substream *stream, |
| struct snd_soc_dai *dai) |
| { |
| struct msm_dai_slim_drv_data *drv_data = dev_get_drvdata(dai->dev); |
| struct msm_slim_dma_data *dma_data = NULL; |
| struct msm_slim_dai_data *dai_data; |
| |
| dai_data = msm_slim_get_dai_data(drv_data, dai); |
| dma_data = snd_soc_dai_get_dma_data(dai, stream); |
| if (!dma_data || !dai_data) { |
| dev_err(dai->dev, |
| "%s: Invalid %s\n", __func__, |
| (!dma_data) ? "dma_data" : "dai_data"); |
| return; |
| } |
| |
| if ((!(dai_data->status & DAI_STATE_PREPARED)) || |
| dai_data->status & DAI_STATE_RUNNING) { |
| dev_err(dai->dev, |
| "%s: dai id (%d) has invalid state 0x%x\n", |
| __func__, dai->id, dai_data->status); |
| return; |
| } |
| |
| snd_soc_dai_set_dma_data(dai, stream, NULL); |
| /* clear prepared state for the dai */ |
| CLR_DAI_STATE(dai_data->status, DAI_STATE_PREPARED); |
| } |
| |
| static const struct snd_soc_component_driver msm_dai_slim_component = { |
| .name = "msm-dai-slim-cmpnt", |
| }; |
| |
| static struct snd_soc_dai_ops msm_dai_slim_ops = { |
| .prepare = msm_dai_slim_prepare, |
| .hw_params = msm_dai_slim_hw_params, |
| .shutdown = msm_dai_slim_shutdown, |
| .set_channel_map = msm_dai_slim_set_channel_map, |
| }; |
| |
| static struct snd_soc_dai_driver msm_slim_dais[] = { |
| { |
| /* |
| * The first dai name should be same as device name |
| * to support registering single and multile dais. |
| */ |
| .name = SLIM_DEV_NAME, |
| .id = MSM_DAI_SLIM0, |
| .capture = { |
| .rates = SLIM_DAI_RATES, |
| .formats = SLIM_DAI_FORMATS, |
| .channels_min = 1, |
| /* |
| * max channels allowed is |
| * dependent on platform and |
| * will be updated before this |
| * dai driver is registered. |
| */ |
| .channels_max = 1, |
| .rate_min = 8000, |
| .rate_max = 384000, |
| .stream_name = "SLIM_DAI0 Capture", |
| }, |
| .ops = &msm_dai_slim_ops, |
| }, |
| /* |
| * If multiple dais are needed, |
| * add dais here and update the |
| * dai_id enum. |
| */ |
| }; |
| |
| static void msm_dai_slim_remove_dai_data( |
| struct device *dev, |
| struct msm_dai_slim_drv_data *drv_data) |
| { |
| int i; |
| struct msm_slim_dai_data *dai_data_t; |
| |
| for (i = 0; i < drv_data->num_dais; i++) { |
| dai_data_t = &drv_data->slim_dai_data[i]; |
| |
| kfree(dai_data_t->chan_h); |
| dai_data_t->chan_h = NULL; |
| kfree(dai_data_t->sh_ch); |
| dai_data_t->sh_ch = NULL; |
| } |
| } |
| |
| static int msm_dai_slim_populate_dai_data(struct device *dev, |
| struct msm_dai_slim_drv_data *drv_data) |
| { |
| struct snd_soc_dai_driver *dai_drv; |
| struct msm_slim_dai_data *dai_data_t; |
| u8 num_ch; |
| int i, j, rc; |
| |
| for (i = 0; i < drv_data->num_dais; i++) { |
| num_ch = 0; |
| dai_drv = &msm_slim_dais[i]; |
| num_ch += dai_drv->capture.channels_max; |
| num_ch += dai_drv->playback.channels_max; |
| |
| dai_data_t = &drv_data->slim_dai_data[i]; |
| dai_data_t->dai_drv = dai_drv; |
| dai_data_t->dai_id = dai_drv->id; |
| dai_data_t->dma_data.sdev = drv_data->sdev; |
| dai_data_t->dma_data.dai_channel_ctl = |
| msm_dai_slim_ch_ctl; |
| SET_DAI_STATE(dai_data_t->status, |
| DAI_STATE_INITIALIZED); |
| |
| dai_data_t->chan_h = devm_kzalloc(dev, |
| sizeof(u16) * num_ch, |
| GFP_KERNEL); |
| if (!dai_data_t->chan_h) { |
| dev_err(dev, |
| "%s: DAI ID %d, Failed to alloc channel handles\n", |
| __func__, i); |
| rc = -ENOMEM; |
| goto err_mem_alloc; |
| } |
| |
| dai_data_t->sh_ch = devm_kzalloc(dev, |
| sizeof(u16) * num_ch, |
| GFP_KERNEL); |
| if (!dai_data_t->sh_ch) { |
| dev_err(dev, |
| "%s: DAI ID %d, Failed to alloc sh_ch\n", |
| __func__, i); |
| rc = -ENOMEM; |
| goto err_mem_alloc; |
| } |
| } |
| return 0; |
| |
| err_mem_alloc: |
| for (j = 0; j < i; j++) { |
| dai_data_t = &drv_data->slim_dai_data[i]; |
| |
| devm_kfree(dev, dai_data_t->chan_h); |
| dai_data_t->chan_h = NULL; |
| |
| devm_kfree(dev, dai_data_t->sh_ch); |
| dai_data_t->sh_ch = NULL; |
| } |
| return rc; |
| } |
| |
| static int msm_dai_slim_dev_probe(struct slim_device *sdev) |
| { |
| int rc, i; |
| u8 max_channels; |
| u32 apps_ch_pipes; |
| struct msm_dai_slim_drv_data *drv_data; |
| struct device *dev = &sdev->dev; |
| struct snd_soc_dai_driver *dai_drv; |
| |
| if (!dev->of_node || |
| !dev->of_node->parent) { |
| dev_err(dev, |
| "%s: Invalid %s\n", __func__, |
| (!dev->of_node) ? "of_node" : "parent_of_node"); |
| return -EINVAL; |
| } |
| |
| rc = of_property_read_u32(dev->of_node->parent, |
| "qcom,apps-ch-pipes", |
| &apps_ch_pipes); |
| if (rc) { |
| dev_err(dev, |
| "%s: Failed to lookup property %s in node %s, err = %d\n", |
| __func__, "qcom,apps-ch-pipes", |
| dev->of_node->parent->full_name, rc); |
| goto err_ret; |
| } |
| |
| max_channels = hweight_long(apps_ch_pipes); |
| if (max_channels <= 0) { |
| dev_err(dev, |
| "%s: Invalid apps owned ports %d\n", |
| __func__, max_channels); |
| goto err_ret; |
| } |
| |
| dev_dbg(dev, "%s: max channels = %u\n", |
| __func__, max_channels); |
| |
| for (i = 0; i < ARRAY_SIZE(msm_slim_dais); i++) { |
| dai_drv = &msm_slim_dais[i]; |
| dai_drv->capture.channels_max = max_channels; |
| dai_drv->playback.channels_max = max_channels; |
| } |
| |
| drv_data = devm_kzalloc(dev, sizeof(*drv_data), |
| GFP_KERNEL); |
| if (!drv_data) { |
| rc = -ENOMEM; |
| goto err_ret; |
| } |
| |
| drv_data->sdev = sdev; |
| drv_data->num_dais = NUM_SLIM_DAIS; |
| |
| rc = msm_dai_slim_populate_dai_data(dev, drv_data); |
| if (rc) { |
| dev_err(dev, |
| "%s: failed to setup dai_data, err = %d\n", |
| __func__, rc); |
| goto err_populate_dai; |
| } |
| |
| rc = snd_soc_register_component(&sdev->dev, &msm_dai_slim_component, |
| msm_slim_dais, NUM_SLIM_DAIS); |
| if (rc < 0) { |
| dev_err(dev, "%s: failed to register DAI, err = %d\n", |
| __func__, rc); |
| goto err_reg_comp; |
| } |
| |
| dev_set_drvdata(dev, drv_data); |
| return rc; |
| |
| err_reg_comp: |
| msm_dai_slim_remove_dai_data(dev, drv_data); |
| |
| err_populate_dai: |
| devm_kfree(dev, drv_data); |
| |
| err_ret: |
| return rc; |
| } |
| |
| static int msm_dai_slim_dev_remove(struct slim_device *sdev) |
| { |
| snd_soc_unregister_component(&sdev->dev); |
| return 0; |
| } |
| |
| static const struct slim_device_id msm_dai_slim_dt_match[] = { |
| {SLIM_DEV_NAME, 0 }, |
| {} |
| }; |
| |
| static struct slim_driver msm_dai_slim_driver = { |
| .driver = { |
| .name = SLIM_DEV_NAME, |
| .owner = THIS_MODULE, |
| }, |
| .probe = msm_dai_slim_dev_probe, |
| .remove = msm_dai_slim_dev_remove, |
| .id_table = msm_dai_slim_dt_match, |
| }; |
| |
| static int __init msm_dai_slim_init(void) |
| { |
| int rc; |
| |
| rc = slim_driver_register(&msm_dai_slim_driver); |
| if (rc) |
| pr_err("%s: failed to register with slimbus driver rc = %d", |
| __func__, rc); |
| return rc; |
| } |
| module_init(msm_dai_slim_init); |
| |
| static void __exit msm_dai_slim_exit(void) |
| { |
| } |
| module_exit(msm_dai_slim_exit); |
| |
| /* Module information */ |
| MODULE_DESCRIPTION("Slimbus apps-owned channel handling driver"); |
| MODULE_LICENSE("GPL v2"); |