diff options
| -rw-r--r-- | drivers/soundwire/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/soundwire/intel.c | 358 | ||||
| -rw-r--r-- | drivers/soundwire/intel.h | 4 | ||||
| -rw-r--r-- | drivers/soundwire/intel_init.c | 3 | ||||
| -rw-r--r-- | include/linux/soundwire/sdw.h | 3 | ||||
| -rw-r--r-- | include/linux/soundwire/sdw_intel.h | 14 |
6 files changed, 383 insertions, 1 deletions
diff --git a/drivers/soundwire/Kconfig b/drivers/soundwire/Kconfig index b46084b4b1f8..19c8efb9a5ee 100644 --- a/drivers/soundwire/Kconfig +++ b/drivers/soundwire/Kconfig @@ -27,7 +27,7 @@ config SOUNDWIRE_INTEL tristate "Intel SoundWire Master driver" select SOUNDWIRE_CADENCE select SOUNDWIRE_BUS - depends on X86 && ACPI + depends on X86 && ACPI && SND_SOC ---help--- SoundWire Intel Master driver. If you have an Intel platform which has a SoundWire Master then diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 707e435b5da1..0a8990e758f9 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -87,6 +87,12 @@ #define SDW_ALH_STRMZCFG_DMAT GENMASK(7, 0) #define SDW_ALH_STRMZCFG_CHN GENMASK(19, 16) +enum intel_pdi_type { + INTEL_PDI_IN = 0, + INTEL_PDI_OUT = 1, + INTEL_PDI_BD = 2, +}; + struct sdw_intel { struct sdw_cdns cdns; int instance; @@ -379,6 +385,347 @@ intel_pdi_alh_configure(struct sdw_intel *sdw, struct sdw_cdns_pdi *pdi) intel_writel(alh, SDW_ALH_STRMZCFG(pdi->intel_alh_id), conf); } +static int intel_config_stream(struct sdw_intel *sdw, + struct snd_pcm_substream *substream, + struct snd_soc_dai *dai, + struct snd_pcm_hw_params *hw_params, int link_id) +{ + if (sdw->res->ops && sdw->res->ops->config_stream) + return sdw->res->ops->config_stream(sdw->res->arg, + substream, dai, hw_params, link_id); + + return -EIO; +} + +/* + * DAI routines + */ + +static struct sdw_cdns_port *intel_alloc_port(struct sdw_intel *sdw, + u32 ch, u32 dir, bool pcm) +{ + struct sdw_cdns *cdns = &sdw->cdns; + struct sdw_cdns_port *port = NULL; + int i, ret = 0; + + for (i = 0; i < cdns->num_ports; i++) { + if (cdns->ports[i].assigned == true) + continue; + + port = &cdns->ports[i]; + port->assigned = true; + port->direction = dir; + port->ch = ch; + break; + } + + if (!port) { + dev_err(cdns->dev, "Unable to find a free port\n"); + return NULL; + } + + if (pcm) { + ret = sdw_cdns_alloc_stream(cdns, &cdns->pcm, port, ch, dir); + if (ret) + goto out; + + intel_pdi_shim_configure(sdw, port->pdi); + sdw_cdns_config_stream(cdns, port, ch, dir, port->pdi); + + intel_pdi_alh_configure(sdw, port->pdi); + + } else { + ret = sdw_cdns_alloc_stream(cdns, &cdns->pdm, port, ch, dir); + } + +out: + if (ret) { + port->assigned = false; + port = NULL; + } + + return port; +} + +static void intel_port_cleanup(struct sdw_cdns_dma_data *dma) +{ + int i; + + for (i = 0; i < dma->nr_ports; i++) { + if (dma->port[i]) { + dma->port[i]->pdi->assigned = false; + dma->port[i]->pdi = NULL; + dma->port[i]->assigned = false; + dma->port[i] = NULL; + } + } +} + +static int intel_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai); + struct sdw_intel *sdw = cdns_to_intel(cdns); + struct sdw_cdns_dma_data *dma; + struct sdw_stream_config sconfig; + struct sdw_port_config *pconfig; + int ret, i, ch, dir; + bool pcm = true; + + dma = snd_soc_dai_get_dma_data(dai, substream); + if (!dma) + return -EIO; + + ch = params_channels(params); + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + dir = SDW_DATA_DIR_RX; + else + dir = SDW_DATA_DIR_TX; + + if (dma->stream_type == SDW_STREAM_PDM) { + /* TODO: Check whether PDM decimator is already in use */ + dma->nr_ports = sdw_cdns_get_stream(cdns, &cdns->pdm, ch, dir); + pcm = false; + } else { + dma->nr_ports = sdw_cdns_get_stream(cdns, &cdns->pcm, ch, dir); + } + + if (!dma->nr_ports) { + dev_err(dai->dev, "ports/resources not available"); + return -EINVAL; + } + + dma->port = kcalloc(dma->nr_ports, sizeof(*dma->port), GFP_KERNEL); + if (!dma->port) + return -ENOMEM; + + for (i = 0; i < dma->nr_ports; i++) { + dma->port[i] = intel_alloc_port(sdw, ch, dir, pcm); + if (!dma->port[i]) { + ret = -EINVAL; + goto port_error; + } + } + + /* Inform DSP about PDI stream number */ + for (i = 0; i < dma->nr_ports; i++) { + ret = intel_config_stream(sdw, substream, dai, params, + dma->port[i]->pdi->intel_alh_id); + if (ret) + goto port_error; + } + + sconfig.direction = dir; + sconfig.ch_count = ch; + sconfig.frame_rate = params_rate(params); + sconfig.type = dma->stream_type; + + if (dma->stream_type == SDW_STREAM_PDM) { + sconfig.frame_rate *= 50; + sconfig.bps = 1; + } else { + sconfig.bps = snd_pcm_format_width(params_format(params)); + } + + /* Port configuration */ + pconfig = kcalloc(dma->nr_ports, sizeof(*pconfig), GFP_KERNEL); + if (!pconfig) { + ret = -ENOMEM; + goto port_error; + } + + for (i = 0; i < dma->nr_ports; i++) { + pconfig[i].num = dma->port[i]->num; + pconfig[i].ch_mask = (1 << ch) - 1; + } + + ret = sdw_stream_add_master(&cdns->bus, &sconfig, + pconfig, dma->nr_ports, dma->stream); + if (ret) { + dev_err(cdns->dev, "add master to stream failed:%d", ret); + goto stream_error; + } + + kfree(pconfig); + return ret; + +stream_error: + kfree(pconfig); +port_error: + intel_port_cleanup(dma); + kfree(dma->port); + return ret; +} + +static int +intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) +{ + struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai); + struct sdw_cdns_dma_data *dma; + int ret; + + dma = snd_soc_dai_get_dma_data(dai, substream); + if (!dma) + return -EIO; + + ret = sdw_stream_remove_master(&cdns->bus, dma->stream); + if (ret < 0) + dev_err(dai->dev, "remove master from stream %s failed: %d", + dma->stream->name, ret); + + intel_port_cleanup(dma); + kfree(dma->port); + return ret; +} + +static int intel_pcm_set_sdw_stream(struct snd_soc_dai *dai, + void *stream, int direction) +{ + return cdns_set_sdw_stream(dai, stream, true, direction); +} + +static int intel_pdm_set_sdw_stream(struct snd_soc_dai *dai, + void *stream, int direction) +{ + return cdns_set_sdw_stream(dai, stream, false, direction); +} + +static struct snd_soc_dai_ops intel_pcm_dai_ops = { + .hw_params = intel_hw_params, + .hw_free = intel_hw_free, + .shutdown = sdw_cdns_shutdown, + .set_sdw_stream = intel_pcm_set_sdw_stream, +}; + +static struct snd_soc_dai_ops intel_pdm_dai_ops = { + .hw_params = intel_hw_params, + .hw_free = intel_hw_free, + .shutdown = sdw_cdns_shutdown, + .set_sdw_stream = intel_pdm_set_sdw_stream, +}; + +static const struct snd_soc_component_driver dai_component = { + .name = "soundwire", +}; + +static int intel_create_dai(struct sdw_cdns *cdns, + struct snd_soc_dai_driver *dais, + enum intel_pdi_type type, + u32 num, u32 off, u32 max_ch, bool pcm) +{ + int i; + + if (num == 0) + return 0; + + /* TODO: Read supported rates/formats from hardware */ + for (i = off; i < (off + num); i++) { + dais[i].name = kasprintf(GFP_KERNEL, "SDW%d Pin%d", + cdns->instance, i); + if (!dais[i].name) + return -ENOMEM; + + if (type == INTEL_PDI_BD || type == INTEL_PDI_OUT) { + dais[i].playback.stream_name = kasprintf(GFP_KERNEL, + "SDW%d Tx%d", + cdns->instance, i); + if (!dais[i].playback.stream_name) { + kfree(dais[i].name); + return -ENOMEM; + } + + dais[i].playback.channels_min = 1; + dais[i].playback.channels_max = max_ch; + dais[i].playback.rates = SNDRV_PCM_RATE_48000; + dais[i].playback.formats = SNDRV_PCM_FMTBIT_S16_LE; + } + + if (type == INTEL_PDI_BD || type == INTEL_PDI_IN) { + dais[i].capture.stream_name = kasprintf(GFP_KERNEL, + "SDW%d Rx%d", + cdns->instance, i); + if (!dais[i].capture.stream_name) { + kfree(dais[i].name); + kfree(dais[i].playback.stream_name); + return -ENOMEM; + } + + dais[i].playback.channels_min = 1; + dais[i].playback.channels_max = max_ch; + dais[i].capture.rates = SNDRV_PCM_RATE_48000; + dais[i].capture.formats = SNDRV_PCM_FMTBIT_S16_LE; + } + + dais[i].id = SDW_DAI_ID_RANGE_START + i; + + if (pcm) + dais[i].ops = &intel_pcm_dai_ops; + else + dais[i].ops = &intel_pdm_dai_ops; + } + + return 0; +} + +static int intel_register_dai(struct sdw_intel *sdw) +{ + struct sdw_cdns *cdns = &sdw->cdns; + struct sdw_cdns_streams *stream; + struct snd_soc_dai_driver *dais; + int num_dai, ret, off = 0; + + /* DAIs are created based on total number of PDIs supported */ + num_dai = cdns->pcm.num_pdi + cdns->pdm.num_pdi; + + dais = devm_kcalloc(cdns->dev, num_dai, sizeof(*dais), GFP_KERNEL); + if (!dais) + return -ENOMEM; + + /* Create PCM DAIs */ + stream = &cdns->pcm; + + ret = intel_create_dai(cdns, dais, INTEL_PDI_IN, + stream->num_in, off, stream->num_ch_in, true); + if (ret) + return ret; + + off += cdns->pcm.num_in; + ret = intel_create_dai(cdns, dais, INTEL_PDI_OUT, + cdns->pcm.num_out, off, stream->num_ch_out, true); + if (ret) + return ret; + + off += cdns->pcm.num_out; + ret = intel_create_dai(cdns, dais, INTEL_PDI_BD, + cdns->pcm.num_bd, off, stream->num_ch_bd, true); + if (ret) + return ret; + + /* Create PDM DAIs */ + stream = &cdns->pdm; + off += cdns->pcm.num_bd; + ret = intel_create_dai(cdns, dais, INTEL_PDI_IN, + cdns->pdm.num_in, off, stream->num_ch_in, false); + if (ret) + return ret; + + off += cdns->pdm.num_in; + ret = intel_create_dai(cdns, dais, INTEL_PDI_OUT, + cdns->pdm.num_out, off, stream->num_ch_out, false); + if (ret) + return ret; + + off += cdns->pdm.num_bd; + ret = intel_create_dai(cdns, dais, INTEL_PDI_BD, + cdns->pdm.num_bd, off, stream->num_ch_bd, false); + if (ret) + return ret; + + return snd_soc_register_component(cdns->dev, &dai_component, + dais, num_dai); +} + static int intel_prop_read(struct sdw_bus *bus) { /* Initialize with default handler to read all DisCo properties */ @@ -472,8 +819,18 @@ static int intel_probe(struct platform_device *pdev) goto err_init; } + /* Register DAIs */ + ret = intel_register_dai(sdw); + if (ret) { + dev_err(sdw->cdns.dev, "DAI registration failed: %d", ret); + snd_soc_unregister_component(sdw->cdns.dev); + goto err_dai; + } + return 0; +err_dai: + free_irq(sdw->res->irq, sdw); err_init: sdw_delete_bus_master(&sdw->cdns.bus); err_master_reg: @@ -487,6 +844,7 @@ static int intel_remove(struct platform_device *pdev) sdw = platform_get_drvdata(pdev); free_irq(sdw->res->irq, sdw); + snd_soc_unregister_component(sdw->cdns.dev); sdw_delete_bus_master(&sdw->cdns.bus); return 0; diff --git a/drivers/soundwire/intel.h b/drivers/soundwire/intel.h index ffa30d9535a2..c1a5bac6212e 100644 --- a/drivers/soundwire/intel.h +++ b/drivers/soundwire/intel.h @@ -10,6 +10,8 @@ * @shim: Audio shim pointer * @alh: ALH (Audio Link Hub) pointer * @irq: Interrupt line + * @ops: Shim callback ops + * @arg: Shim callback ops argument * * This is set as pdata for each link instance. */ @@ -18,6 +20,8 @@ struct sdw_intel_link_res { void __iomem *shim; void __iomem *alh; int irq; + const struct sdw_intel_ops *ops; + void *arg; }; #endif /* __SDW_INTEL_LOCAL_H */ diff --git a/drivers/soundwire/intel_init.c b/drivers/soundwire/intel_init.c index 6f2bb99526f2..d1ea6b4d0ad3 100644 --- a/drivers/soundwire/intel_init.c +++ b/drivers/soundwire/intel_init.c @@ -111,6 +111,9 @@ static struct sdw_intel_ctx link->res.shim = res->mmio_base + SDW_SHIM_BASE; link->res.alh = res->mmio_base + SDW_ALH_BASE; + link->res.ops = res->ops; + link->res.arg = res->arg; + memset(&pdevinfo, 0, sizeof(pdevinfo)); pdevinfo.parent = res->parent; diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 399cfb295593..962971e6a9c7 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -38,6 +38,9 @@ struct sdw_slave; #define SDW_VALID_PORT_RANGE(n) (n <= 14 && n >= 1) +#define SDW_DAI_ID_RANGE_START 100 +#define SDW_DAI_ID_RANGE_END 200 + /** * enum sdw_slave_status - Slave status * @SDW_SLAVE_UNATTACHED: Slave is not attached with the bus. diff --git a/include/linux/soundwire/sdw_intel.h b/include/linux/soundwire/sdw_intel.h index 4b37528f592d..2b9573b8aedd 100644 --- a/include/linux/soundwire/sdw_intel.h +++ b/include/linux/soundwire/sdw_intel.h @@ -5,17 +5,31 @@ #define __SDW_INTEL_H /** + * struct sdw_intel_ops: Intel audio driver callback ops + * + * @config_stream: configure the stream with the hw_params + */ +struct sdw_intel_ops { + int (*config_stream)(void *arg, void *substream, + void *dai, void *hw_params, int stream_num); +}; + +/** * struct sdw_intel_res - Soundwire Intel resource structure * @mmio_base: mmio base of SoundWire registers * @irq: interrupt number * @handle: ACPI parent handle * @parent: parent device + * @ops: callback ops + * @arg: callback arg */ struct sdw_intel_res { void __iomem *mmio_base; int irq; acpi_handle handle; struct device *parent; + const struct sdw_intel_ops *ops; + void *arg; }; void *sdw_intel_init(acpi_handle *parent_handle, struct sdw_intel_res *res); |