HD-Audio bus is a PCI device. Add all functions necessary to probe such device along with its removal sequence. Behaviour implemented for all standard operations is similar to existing solutions: sound/pci/hda and sound/soc/intel/skylake.
Signed-off-by: Amadeusz Sławiński amadeuszx.slawinski@linux.intel.com Signed-off-by: Cezary Rojewski cezary.rojewski@intel.com --- sound/soc/intel/Kconfig | 3 +- sound/soc/intel/avs/avs.h | 1 + sound/soc/intel/avs/core.c | 494 ++++++++++++++++++++++++++++++++ sound/soc/intel/avs/dsp.c | 3 - sound/soc/intel/avs/registers.h | 1 + 5 files changed, 498 insertions(+), 4 deletions(-)
diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig index 05ad6bdecfc5..932b3a4ff11e 100644 --- a/sound/soc/intel/Kconfig +++ b/sound/soc/intel/Kconfig @@ -215,9 +215,10 @@ config SND_SOC_INTEL_AVS depends on COMMON_CLK select SND_SOC_ACPI select SND_SOC_TOPOLOGY + select SND_HDA select SND_HDA_EXT_CORE select SND_HDA_DSP_LOADER - select SND_INTEL_NHLT + select SND_INTEL_DSP_CONFIG select WANT_DEV_COREDUMP help Enable support for Intel(R) cAVS 1.5 platforms with DSP diff --git a/sound/soc/intel/avs/avs.h b/sound/soc/intel/avs/avs.h index 12846ad93efe..67a80d56c7ae 100644 --- a/sound/soc/intel/avs/avs.h +++ b/sound/soc/intel/avs/avs.h @@ -126,6 +126,7 @@ struct avs_dev { char **lib_names;
struct completion fw_ready; + struct work_struct probe_work;
struct nhlt_acpi_table *nhlt; struct list_head comp_list; diff --git a/sound/soc/intel/avs/core.c b/sound/soc/intel/avs/core.c index a4d063d12fec..93180c22032d 100644 --- a/sound/soc/intel/avs/core.c +++ b/sound/soc/intel/avs/core.c @@ -14,9 +14,17 @@ // foundation of this driver //
+#include <linux/module.h> #include <linux/pci.h> +#include <sound/hda_codec.h> +#include <sound/hda_i915.h> +#include <sound/hda_register.h> #include <sound/hdaudio.h> +#include <sound/hdaudio_ext.h> +#include <sound/intel-dsp-config.h> +#include <sound/intel-nhlt.h> #include "avs.h" +#include "cldma.h"
static void avs_hda_update_config_dword(struct hdac_bus *bus, u32 reg, u32 mask, u32 value) @@ -59,3 +67,489 @@ void avs_hda_l1sen_enable(struct avs_dev *adev, bool enable) value = enable ? AZX_VS_EM2_L1SEN : 0; snd_hdac_chip_updatel(&adev->base.core, VS_EM2, AZX_VS_EM2_L1SEN, value); } + +static int avs_hdac_bus_init_streams(struct hdac_bus *bus) +{ + unsigned int cp_streams, pb_streams; + unsigned int gcap; + + gcap = snd_hdac_chip_readw(bus, GCAP); + cp_streams = (gcap >> 8) & 0x0F; + pb_streams = (gcap >> 12) & 0x0F; + bus->num_streams = cp_streams + pb_streams; + + snd_hdac_ext_stream_init_all(bus, 0, cp_streams, SNDRV_PCM_STREAM_CAPTURE); + snd_hdac_ext_stream_init_all(bus, cp_streams, pb_streams, SNDRV_PCM_STREAM_PLAYBACK); + + return snd_hdac_bus_alloc_stream_pages(bus); +} + +static bool avs_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset) +{ + struct hdac_ext_link *hlink; + bool ret; + + avs_hdac_clock_gating_enable(bus, false); + ret = snd_hdac_bus_init_chip(bus, full_reset); + + /* Reset stream-to-link mapping */ + list_for_each_entry(hlink, &bus->hlink_list, list) + writel(0, hlink->ml_addr + AZX_REG_ML_LOSIDV); + + avs_hdac_clock_gating_enable(bus, true); + + /* Set DUM bit to address incorrect position reporting for capture + * streams. In order to do so, CTRL needs to be out of reset state + */ + snd_hdac_chip_updatel(bus, VS_EM2, AZX_VS_EM2_DUM, AZX_VS_EM2_DUM); + + return ret; +} + +static int probe_codec(struct hdac_bus *bus, int addr) +{ + struct hda_codec *codec; + unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) | + (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; + unsigned int res = -1; + int ret; + + mutex_lock(&bus->cmd_mutex); + snd_hdac_bus_send_cmd(bus, cmd); + snd_hdac_bus_get_response(bus, addr, &res); + mutex_unlock(&bus->cmd_mutex); + if (res == -1) + return -EIO; + + dev_dbg(bus->dev, "codec #%d probed OK: 0x%x\n", addr, res); + + codec = snd_hda_codec_device_init(to_hda_bus(bus), addr, "hdaudioB%dD%d", bus->idx, addr); + if (IS_ERR(codec)) { + dev_err(bus->dev, "init codec failed: %ld\n", PTR_ERR(codec)); + return PTR_ERR(codec); + } + /* + * Allow avs_core suspend by forcing suspended state on all + * of its codec child devices. Component interested in + * dealing with hda codecs directly takes pm responsibilities + */ + pm_runtime_set_suspended(hda_codec_dev(codec)); + + /* configure effectively creates new ASoC component */ + ret = snd_hda_codec_configure(codec); + if (ret < 0) { + dev_err(bus->dev, "failed to config codec %d\n", ret); + return ret; + } + + return 0; +} + +static void avs_hdac_bus_probe_codecs(struct hdac_bus *bus) +{ + int c; + + /* First try to probe all given codec slots */ + for (c = 0; c < HDA_MAX_CODECS; c++) { + if (!(bus->codec_mask & BIT(c))) + continue; + + if (!probe_codec(bus, c)) + /* success, continue probing */ + continue; + + /* + * Some BIOSen give you wrong codec addresses + * that don't exist + */ + dev_warn(bus->dev, "Codec #%d probe error; disabling it...\n", c); + bus->codec_mask &= ~BIT(c); + /* + * More badly, accessing to a non-existing + * codec often screws up the controller bus, + * and disturbs the further communications. + * Thus if an error occurs during probing, + * better to reset the controller bus to get + * back to the sanity state. + */ + snd_hdac_bus_stop_chip(bus); + avs_hdac_bus_init_chip(bus, true); + } +} + +static void avs_hda_probe_work(struct work_struct *work) +{ + struct avs_dev *adev = container_of(work, struct avs_dev, probe_work); + struct hdac_bus *bus = &adev->base.core; + struct hdac_ext_link *hlink; + int ret; + + pm_runtime_set_active(bus->dev); /* clear runtime_error flag */ + + ret = snd_hdac_i915_init(bus); + if (ret < 0) + dev_info(bus->dev, "i915 init unsuccessful: %d\n", ret); + + snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); + avs_hdac_bus_init_chip(bus, true); + avs_hdac_bus_probe_codecs(bus); + snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); + + /* with all codecs probed, links can be powered down */ + list_for_each_entry(hlink, &bus->hlink_list, list) + snd_hdac_ext_bus_link_put(bus, hlink); + + snd_hdac_ext_bus_ppcap_enable(bus, true); + snd_hdac_ext_bus_ppcap_int_enable(bus, true); + + ret = avs_dsp_first_boot_firmware(adev); + if (ret < 0) + return; + + adev->nhlt = intel_nhlt_init(adev->dev); + if (!adev->nhlt) + dev_info(bus->dev, "platform has no NHLT\n"); + + avs_register_all_boards(adev); + + /* configure PM */ + pm_runtime_set_autosuspend_delay(bus->dev, 2000); + pm_runtime_use_autosuspend(bus->dev); + pm_runtime_mark_last_busy(bus->dev); + pm_runtime_put_autosuspend(bus->dev); + pm_runtime_allow(bus->dev); +} + +static void hdac_stream_update_pos(struct hdac_stream *stream, u64 buffer_size) +{ + u64 prev_pos, pos, num_bytes; + + div64_u64_rem(stream->curr_pos, buffer_size, &prev_pos); + pos = snd_hdac_stream_get_pos_posbuf(stream); + + if (pos < prev_pos) + num_bytes = (buffer_size - prev_pos) + pos; + else + num_bytes = pos - prev_pos; + + stream->curr_pos += num_bytes; +} + +/* called from IRQ */ +static void hdac_update_stream(struct hdac_bus *bus, struct hdac_stream *stream) +{ + if (stream->substream) { + snd_pcm_period_elapsed(stream->substream); + } else if (stream->cstream) { + u64 buffer_size = stream->cstream->runtime->buffer_size; + + hdac_stream_update_pos(stream, buffer_size); + snd_compr_fragment_elapsed(stream->cstream); + } +} + +static irqreturn_t hdac_bus_irq_handler(int irq, void *context) +{ + struct hdac_bus *bus = context; + u32 mask, int_enable; + u32 status; + int ret = IRQ_NONE; + + if (!pm_runtime_active(bus->dev)) + return ret; + + spin_lock(&bus->reg_lock); + + status = snd_hdac_chip_readl(bus, INTSTS); + if (status == 0 || status == UINT_MAX) { + spin_unlock(&bus->reg_lock); + return ret; + } + + /* clear rirb int */ + status = snd_hdac_chip_readb(bus, RIRBSTS); + if (status & RIRB_INT_MASK) { + if (status & RIRB_INT_RESPONSE) + snd_hdac_bus_update_rirb(bus); + snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK); + } + + mask = (0x1 << bus->num_streams) - 1; + + status = snd_hdac_chip_readl(bus, INTSTS); + status &= mask; + if (status) { + /* Disable stream interrupts; Re-enable in bottom half */ + int_enable = snd_hdac_chip_readl(bus, INTCTL); + snd_hdac_chip_writel(bus, INTCTL, (int_enable & (~mask))); + ret = IRQ_WAKE_THREAD; + } else { + ret = IRQ_HANDLED; + } + + spin_unlock(&bus->reg_lock); + return ret; +} + +static irqreturn_t hdac_bus_irq_thread(int irq, void *context) +{ + struct hdac_bus *bus = context; + u32 status; + u32 int_enable; + u32 mask; + unsigned long flags; + + status = snd_hdac_chip_readl(bus, INTSTS); + + snd_hdac_bus_handle_stream_irq(bus, status, hdac_update_stream); + + /* Re-enable stream interrupts */ + mask = (0x1 << bus->num_streams) - 1; + spin_lock_irqsave(&bus->reg_lock, flags); + int_enable = snd_hdac_chip_readl(bus, INTCTL); + snd_hdac_chip_writel(bus, INTCTL, (int_enable | mask)); + spin_unlock_irqrestore(&bus->reg_lock, flags); + + return IRQ_HANDLED; +} + +static int avs_hdac_acquire_irq(struct avs_dev *adev) +{ + struct hdac_bus *bus = &adev->base.core; + struct pci_dev *pci = to_pci_dev(bus->dev); + int ret; + + /* request one and check that we only got one interrupt */ + ret = pci_alloc_irq_vectors(pci, 1, 1, PCI_IRQ_MSI | PCI_IRQ_LEGACY); + if (ret != 1) { + dev_err(adev->dev, "Failed to allocate IRQ vector: %d\n", ret); + return ret; + } + + ret = pci_request_irq(pci, 0, hdac_bus_irq_handler, hdac_bus_irq_thread, bus, + KBUILD_MODNAME); + if (ret < 0) { + dev_err(adev->dev, "Failed to request stream IRQ handler: %d\n", ret); + goto free_vector; + } + + ret = pci_request_irq(pci, 0, avs_dsp_irq_handler, avs_dsp_irq_thread, adev, + KBUILD_MODNAME); + if (ret < 0) { + dev_err(adev->dev, "Failed to request IPC IRQ handler: %d\n", ret); + goto free_stream_irq; + } + + return 0; + +free_stream_irq: + pci_free_irq(pci, 0, bus); +free_vector: + pci_free_irq_vectors(pci); + return ret; +} + +static int avs_bus_init(struct avs_dev *adev, struct pci_dev *pci, const struct pci_device_id *id) +{ + struct hda_bus *bus = &adev->base; + struct avs_ipc *ipc; + struct device *dev = &pci->dev; + int ret; + + ret = snd_hdac_ext_bus_init(&bus->core, dev, NULL, NULL); + if (ret < 0) + return ret; + + bus->core.use_posbuf = 1; + bus->core.bdl_pos_adj = 0; + bus->core.sync_write = 1; + bus->pci = pci; + bus->mixer_assigned = -1; + mutex_init(&bus->prepare_mutex); + + ipc = devm_kzalloc(dev, sizeof(*ipc), GFP_KERNEL); + if (!ipc) + return -ENOMEM; + ret = avs_ipc_init(ipc, dev); + if (ret < 0) + return ret; + + adev->dev = dev; + adev->spec = (const struct avs_spec *)id->driver_data; + adev->ipc = ipc; + adev->hw_cfg.dsp_cores = hweight_long(AVS_MAIN_CORE_MASK); + INIT_WORK(&adev->probe_work, avs_hda_probe_work); + INIT_LIST_HEAD(&adev->comp_list); + INIT_LIST_HEAD(&adev->path_list); + INIT_LIST_HEAD(&adev->fw_list); + init_completion(&adev->fw_ready); + spin_lock_init(&adev->path_list_lock); + mutex_init(&adev->modres_mutex); + mutex_init(&adev->comp_list_mutex); + mutex_init(&adev->path_mutex); + + return 0; +} + +static int avs_pci_probe(struct pci_dev *pci, const struct pci_device_id *id) +{ + struct hdac_bus *bus; + struct avs_dev *adev; + struct device *dev = &pci->dev; + int ret; + + ret = snd_intel_dsp_driver_probe(pci); + if (ret != SND_INTEL_DSP_DRIVER_ANY && ret != SND_INTEL_DSP_DRIVER_SST) + return -ENODEV; + + ret = pcim_enable_device(pci); + if (ret < 0) + return ret; + + adev = devm_kzalloc(dev, sizeof(*adev), GFP_KERNEL); + if (!adev) + return -ENOMEM; + ret = avs_bus_init(adev, pci, id); + if (ret < 0) { + dev_err(dev, "failed to init avs bus: %d\n", ret); + return ret; + } + + ret = pci_request_regions(pci, "AVS HDAudio"); + if (ret < 0) + return ret; + + bus = &adev->base.core; + bus->addr = pci_resource_start(pci, 0); + bus->remap_addr = pci_ioremap_bar(pci, 0); + if (!bus->remap_addr) { + dev_err(bus->dev, "ioremap error\n"); + ret = -ENXIO; + goto err_remap_bar0; + } + + adev->dsp_ba = pci_ioremap_bar(pci, 4); + if (!adev->dsp_ba) { + dev_err(bus->dev, "ioremap error\n"); + ret = -ENXIO; + goto err_remap_bar4; + } + + snd_hdac_bus_parse_capabilities(bus); + if (bus->mlcap) + snd_hdac_ext_bus_get_ml_capabilities(bus); + + if (!dma_set_mask(dev, DMA_BIT_MASK(64))) { + dma_set_coherent_mask(dev, DMA_BIT_MASK(64)); + } else { + dma_set_mask(dev, DMA_BIT_MASK(32)); + dma_set_coherent_mask(dev, DMA_BIT_MASK(32)); + } + + ret = avs_hdac_bus_init_streams(bus); + if (ret < 0) { + dev_err(dev, "failed to init streams: %d\n", ret); + goto err_init_streams; + } + + ret = avs_hdac_acquire_irq(adev); + if (ret < 0) { + dev_err(bus->dev, "failed to acquire irq: %d\n", ret); + goto err_acquire_irq; + } + + pci_set_master(pci); + pci_set_drvdata(pci, bus); + device_disable_async_suspend(dev); + + schedule_work(&adev->probe_work); + + return 0; + +err_acquire_irq: + snd_hdac_bus_free_stream_pages(bus); + snd_hdac_stream_free_all(bus); +err_init_streams: + iounmap(adev->dsp_ba); +err_remap_bar4: + iounmap(bus->remap_addr); +err_remap_bar0: + pci_release_regions(pci); + return ret; +} + +static void avs_pci_remove(struct pci_dev *pci) +{ + struct hdac_device *hdev, *save; + struct hdac_bus *bus = pci_get_drvdata(pci); + struct avs_dev *adev = hdac_to_avs(bus); + + cancel_work_sync(&adev->probe_work); + avs_ipc_block(adev->ipc); + + avs_unregister_all_boards(adev); + + if (adev->nhlt) + intel_nhlt_free(adev->nhlt); + + if (avs_platattr_test(adev, CLDMA)) + hda_cldma_free(&code_loader); + + snd_hdac_stop_streams_and_chip(bus); + avs_dsp_op(adev, int_control, false); + snd_hdac_ext_bus_ppcap_int_enable(bus, false); + + /* it is safe to remove all codecs from the system now */ + list_for_each_entry_safe(hdev, save, &bus->codec_list, list) + snd_hda_codec_unregister(hdac_to_hda_codec(hdev)); + + snd_hdac_bus_free_stream_pages(bus); + snd_hdac_stream_free_all(bus); + /* reverse ml_capabilities */ + snd_hdac_link_free_all(bus); + snd_hdac_ext_bus_exit(bus); + + avs_dsp_core_disable(adev, GENMASK(adev->hw_cfg.dsp_cores - 1, 0)); + snd_hdac_ext_bus_ppcap_enable(bus, false); + + /* snd_hdac_stop_streams_and_chip does that already? */ + snd_hdac_bus_stop_chip(bus); + snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); + if (bus->audio_component) + snd_hdac_i915_exit(bus); + + avs_module_info_free(adev); + pci_free_irq(pci, 0, adev); + pci_free_irq(pci, 0, bus); + pci_free_irq_vectors(pci); + iounmap(bus->remap_addr); + iounmap(adev->dsp_ba); + pci_release_regions(pci); + + /* Firmware is not needed anymore */ + avs_release_firmwares(adev); + + /* pm_runtime_forbid() can rpm_resume() which we do not want */ + pm_runtime_disable(&pci->dev); + pm_runtime_forbid(&pci->dev); + pm_runtime_enable(&pci->dev); + pm_runtime_get_noresume(&pci->dev); +} + +static const struct pci_device_id avs_ids[] = { + { 0 } +}; +MODULE_DEVICE_TABLE(pci, avs_ids); + +static struct pci_driver avs_pci_driver = { + .name = KBUILD_MODNAME, + .id_table = avs_ids, + .probe = avs_pci_probe, + .remove = avs_pci_remove, +}; +module_pci_driver(avs_pci_driver); + +MODULE_AUTHOR("Cezary Rojewski cezary.rojewski@intel.com"); +MODULE_AUTHOR("Amadeusz Slawinski amadeuszx.slawinski@linux.intel.com"); +MODULE_DESCRIPTION("Intel cAVS sound driver"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/intel/avs/dsp.c b/sound/soc/intel/avs/dsp.c index 8f111250c5b1..06d2f7af520f 100644 --- a/sound/soc/intel/avs/dsp.c +++ b/sound/soc/intel/avs/dsp.c @@ -6,7 +6,6 @@ // Amadeusz Slawinski amadeuszx.slawinski@linux.intel.com //
-#include <linux/module.h> #include <sound/hdaudio_ext.h> #include "avs.h" #include "registers.h" @@ -322,5 +321,3 @@ int avs_dsp_delete_pipeline(struct avs_dev *adev, u8 instance_id) ida_free(&adev->ppl_ida, instance_id); return ret; } - -MODULE_LICENSE("GPL"); diff --git a/sound/soc/intel/avs/registers.h b/sound/soc/intel/avs/registers.h index f951d3441cdf..b2100dc630e4 100644 --- a/sound/soc/intel/avs/registers.h +++ b/sound/soc/intel/avs/registers.h @@ -14,6 +14,7 @@ #define AZX_PGCTL_LSRMD_MASK BIT(4) #define AZX_CGCTL_MISCBDCGE_MASK BIT(6) #define AZX_VS_EM2_L1SEN BIT(13) +#define AZX_VS_EM2_DUM BIT(23)
/* Intel HD Audio General DSP Registers */ #define AVS_ADSP_GEN_BASE 0x0