// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) // // This file is provided under a dual BSD/GPLv2 license. When using or // redistributing this file, you may do so under either license. // // Copyright(c) 2018 Intel Corporation. All rights reserved. // // Authors: Liam Girdwood // Ranjani Sridharan // Rander Wang // Keyon Jie // /* * Hardware interface for generic Intel audio DSP HDA IP */ #include #include #include #include "../sof-audio.h" #include "../ops.h" #include "hda.h" #include "hda-ipc.h" static bool hda_enable_trace_D0I3_S0; #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG) module_param_named(enable_trace_D0I3_S0, hda_enable_trace_D0I3_S0, bool, 0444); MODULE_PARM_DESC(enable_trace_D0I3_S0, "SOF HDA enable trace when the DSP is in D0I3 in S0"); #endif /* * DSP Core control. */ int hda_dsp_core_reset_enter(struct snd_sof_dev *sdev, unsigned int core_mask) { u32 adspcs; u32 reset; int ret; /* set reset bits for cores */ reset = HDA_DSP_ADSPCS_CRST_MASK(core_mask); snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, reset, reset), /* poll with timeout to check if operation successful */ ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, adspcs, ((adspcs & reset) == reset), HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_RESET_TIMEOUT_US); if (ret < 0) { dev_err(sdev->dev, "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n", __func__); return ret; } /* has core entered reset ? */ adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS); if ((adspcs & HDA_DSP_ADSPCS_CRST_MASK(core_mask)) != HDA_DSP_ADSPCS_CRST_MASK(core_mask)) { dev_err(sdev->dev, "error: reset enter failed: core_mask %x adspcs 0x%x\n", core_mask, adspcs); ret = -EIO; } return ret; } int hda_dsp_core_reset_leave(struct snd_sof_dev *sdev, unsigned int core_mask) { unsigned int crst; u32 adspcs; int ret; /* clear reset bits for cores */ snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, HDA_DSP_ADSPCS_CRST_MASK(core_mask), 0); /* poll with timeout to check if operation successful */ crst = HDA_DSP_ADSPCS_CRST_MASK(core_mask); ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, adspcs, !(adspcs & crst), HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_RESET_TIMEOUT_US); if (ret < 0) { dev_err(sdev->dev, "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n", __func__); return ret; } /* has core left reset ? */ adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS); if ((adspcs & HDA_DSP_ADSPCS_CRST_MASK(core_mask)) != 0) { dev_err(sdev->dev, "error: reset leave failed: core_mask %x adspcs 0x%x\n", core_mask, adspcs); ret = -EIO; } return ret; } int hda_dsp_core_stall_reset(struct snd_sof_dev *sdev, unsigned int core_mask) { /* stall core */ snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, HDA_DSP_ADSPCS_CSTALL_MASK(core_mask), HDA_DSP_ADSPCS_CSTALL_MASK(core_mask)); /* set reset state */ return hda_dsp_core_reset_enter(sdev, core_mask); } int hda_dsp_core_run(struct snd_sof_dev *sdev, unsigned int core_mask) { int ret; /* leave reset state */ ret = hda_dsp_core_reset_leave(sdev, core_mask); if (ret < 0) return ret; /* run core */ dev_dbg(sdev->dev, "unstall/run core: core_mask = %x\n", core_mask); snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, HDA_DSP_ADSPCS_CSTALL_MASK(core_mask), 0); /* is core now running ? */ if (!hda_dsp_core_is_enabled(sdev, core_mask)) { hda_dsp_core_stall_reset(sdev, core_mask); dev_err(sdev->dev, "error: DSP start core failed: core_mask %x\n", core_mask); ret = -EIO; } return ret; } /* * Power Management. */ int hda_dsp_core_power_up(struct snd_sof_dev *sdev, unsigned int core_mask) { unsigned int cpa; u32 adspcs; int ret; /* update bits */ snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, HDA_DSP_ADSPCS_SPA_MASK(core_mask), HDA_DSP_ADSPCS_SPA_MASK(core_mask)); /* poll with timeout to check if operation successful */ cpa = HDA_DSP_ADSPCS_CPA_MASK(core_mask); ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, adspcs, (adspcs & cpa) == cpa, HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_RESET_TIMEOUT_US); if (ret < 0) { dev_err(sdev->dev, "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n", __func__); return ret; } /* did core power up ? */ adspcs = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS); if ((adspcs & HDA_DSP_ADSPCS_CPA_MASK(core_mask)) != HDA_DSP_ADSPCS_CPA_MASK(core_mask)) { dev_err(sdev->dev, "error: power up core failed core_mask %xadspcs 0x%x\n", core_mask, adspcs); ret = -EIO; } return ret; } int hda_dsp_core_power_down(struct snd_sof_dev *sdev, unsigned int core_mask) { u32 adspcs; int ret; /* update bits */ snd_sof_dsp_update_bits_unlocked(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, HDA_DSP_ADSPCS_SPA_MASK(core_mask), 0); ret = snd_sof_dsp_read_poll_timeout(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS, adspcs, !(adspcs & HDA_DSP_ADSPCS_SPA_MASK(core_mask)), HDA_DSP_REG_POLL_INTERVAL_US, HDA_DSP_PD_TIMEOUT * USEC_PER_MSEC); if (ret < 0) dev_err(sdev->dev, "error: %s: timeout on HDA_DSP_REG_ADSPCS read\n", __func__); return ret; } bool hda_dsp_core_is_enabled(struct snd_sof_dev *sdev, unsigned int core_mask) { int val; bool is_enable; val = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPCS); is_enable = (val & HDA_DSP_ADSPCS_CPA_MASK(core_mask)) && (val & HDA_DSP_ADSPCS_SPA_MASK(core_mask)) && !(val & HDA_DSP_ADSPCS_CRST_MASK(core_mask)) && !(val & HDA_DSP_ADSPCS_CSTALL_MASK(core_mask)); dev_dbg(sdev->dev, "DSP core(s) enabled? %d : core_mask %x\n", is_enable, core_mask); return is_enable; } int hda_dsp_enable_core(struct snd_sof_dev *sdev, unsigned int core_mask) { int ret; /* return if core is already enabled */ if (hda_dsp_core_is_enabled(sdev, core_mask)) return 0; /* power up */ ret = hda_dsp_core_power_up(sdev, core_mask); if (ret < 0) { dev_err(sdev->dev, "error: dsp core power up failed: core_mask %x\n", core_mask); return ret; } return hda_dsp_core_run(sdev, core_mask); } int hda_dsp_core_reset_power_down(struct snd_sof_dev *sdev, unsigned int core_mask) { int ret; /* place core in reset prior to power down */ ret = hda_dsp_core_stall_reset(sdev, core_mask); if (ret < 0) { dev_err(sdev->dev, "error: dsp core reset failed: core_mask %x\n", core_mask); return ret; } /* power down core */ ret = hda_dsp_core_power_down(sdev, core_mask); if (ret < 0) { dev_err(sdev->dev, "error: dsp core power down fail mask %x: %d\n", core_mask, ret); return ret; } /* make sure we are in OFF state */ if (hda_dsp_core_is_enabled(sdev, core_mask)) { dev_err(sdev->dev, "error: dsp core disable fail mask %x: %d\n", core_mask, ret); ret = -EIO; } return ret; } void hda_dsp_ipc_int_enable(struct snd_sof_dev *sdev) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; const struct sof_intel_dsp_desc *chip = hda->desc; /* enable IPC DONE and BUSY interrupts */ snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, chip->ipc_ctl, HDA_DSP_REG_HIPCCTL_DONE | HDA_DSP_REG_HIPCCTL_BUSY, HDA_DSP_REG_HIPCCTL_DONE | HDA_DSP_REG_HIPCCTL_BUSY); /* enable IPC interrupt */ snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC, HDA_DSP_ADSPIC_IPC, HDA_DSP_ADSPIC_IPC); } void hda_dsp_ipc_int_disable(struct snd_sof_dev *sdev) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; const struct sof_intel_dsp_desc *chip = hda->desc; /* disable IPC interrupt */ snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC, HDA_DSP_ADSPIC_IPC, 0); /* disable IPC BUSY and DONE interrupt */ snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, chip->ipc_ctl, HDA_DSP_REG_HIPCCTL_BUSY | HDA_DSP_REG_HIPCCTL_DONE, 0); } static int hda_dsp_wait_d0i3c_done(struct snd_sof_dev *sdev) { struct hdac_bus *bus = sof_to_bus(sdev); int retry = HDA_DSP_REG_POLL_RETRY_COUNT; while (snd_hdac_chip_readb(bus, VS_D0I3C) & SOF_HDA_VS_D0I3C_CIP) { if (!retry--) return -ETIMEDOUT; usleep_range(10, 15); } return 0; } static int hda_dsp_send_pm_gate_ipc(struct snd_sof_dev *sdev, u32 flags) { struct sof_ipc_pm_gate pm_gate; struct sof_ipc_reply reply; memset(&pm_gate, 0, sizeof(pm_gate)); /* configure pm_gate ipc message */ pm_gate.hdr.size = sizeof(pm_gate); pm_gate.hdr.cmd = SOF_IPC_GLB_PM_MSG | SOF_IPC_PM_GATE; pm_gate.flags = flags; /* send pm_gate ipc to dsp */ return sof_ipc_tx_message_no_pm(sdev->ipc, pm_gate.hdr.cmd, &pm_gate, sizeof(pm_gate), &reply, sizeof(reply)); } static int hda_dsp_update_d0i3c_register(struct snd_sof_dev *sdev, u8 value) { struct hdac_bus *bus = sof_to_bus(sdev); int ret; /* Write to D0I3C after Command-In-Progress bit is cleared */ ret = hda_dsp_wait_d0i3c_done(sdev); if (ret < 0) { dev_err(bus->dev, "CIP timeout before D0I3C update!\n"); return ret; } /* Update D0I3C register */ snd_hdac_chip_updateb(bus, VS_D0I3C, SOF_HDA_VS_D0I3C_I3, value); /* Wait for cmd in progress to be cleared before exiting the function */ ret = hda_dsp_wait_d0i3c_done(sdev); if (ret < 0) { dev_err(bus->dev, "CIP timeout after D0I3C update!\n"); return ret; } dev_vdbg(bus->dev, "D0I3C updated, register = 0x%x\n", snd_hdac_chip_readb(bus, VS_D0I3C)); return 0; } static int hda_dsp_set_D0_state(struct snd_sof_dev *sdev, const struct sof_dsp_power_state *target_state) { u32 flags = 0; int ret; u8 value = 0; /* * Sanity check for illegal state transitions * The only allowed transitions are: * 1. D3 -> D0I0 * 2. D0I0 -> D0I3 * 3. D0I3 -> D0I0 */ switch (sdev->dsp_power_state.state) { case SOF_DSP_PM_D0: /* Follow the sequence below for D0 substate transitions */ break; case SOF_DSP_PM_D3: /* Follow regular flow for D3 -> D0 transition */ return 0; default: dev_err(sdev->dev, "error: transition from %d to %d not allowed\n", sdev->dsp_power_state.state, target_state->state); return -EINVAL; } /* Set flags and register value for D0 target substate */ if (target_state->substate == SOF_HDA_DSP_PM_D0I3) { value = SOF_HDA_VS_D0I3C_I3; /* * Trace DMA is disabled by default when the DSP enters D0I3. * But it can be kept enabled when the DSP enters D0I3 while the * system is in S0 for debug. */ if (hda_enable_trace_D0I3_S0 && sdev->system_suspend_target != SOF_SUSPEND_NONE) flags = HDA_PM_NO_DMA_TRACE; } else { /* prevent power gating in D0I0 */ flags = HDA_PM_PPG; } /* update D0I3C register */ ret = hda_dsp_update_d0i3c_register(sdev, value); if (ret < 0) return ret; /* * Notify the DSP of the state change. * If this IPC fails, revert the D0I3C register update in order * to prevent partial state change. */ ret = hda_dsp_send_pm_gate_ipc(sdev, flags); if (ret < 0) { dev_err(sdev->dev, "error: PM_GATE ipc error %d\n", ret); goto revert; } return ret; revert: /* fallback to the previous register value */ value = value ? 0 : SOF_HDA_VS_D0I3C_I3; /* * This can fail but return the IPC error to signal that * the state change failed. */ hda_dsp_update_d0i3c_register(sdev, value); return ret; } /* helper to log DSP state */ static void hda_dsp_state_log(struct snd_sof_dev *sdev) { switch (sdev->dsp_power_state.state) { case SOF_DSP_PM_D0: switch (sdev->dsp_power_state.substate) { case SOF_HDA_DSP_PM_D0I0: dev_dbg(sdev->dev, "Current DSP power state: D0I0\n"); break; case SOF_HDA_DSP_PM_D0I3: dev_dbg(sdev->dev, "Current DSP power state: D0I3\n"); break; default: dev_dbg(sdev->dev, "Unknown DSP D0 substate: %d\n", sdev->dsp_power_state.substate); break; } break; case SOF_DSP_PM_D1: dev_dbg(sdev->dev, "Current DSP power state: D1\n"); break; case SOF_DSP_PM_D2: dev_dbg(sdev->dev, "Current DSP power state: D2\n"); break; case SOF_DSP_PM_D3_HOT: dev_dbg(sdev->dev, "Current DSP power state: D3_HOT\n"); break; case SOF_DSP_PM_D3: dev_dbg(sdev->dev, "Current DSP power state: D3\n"); break; case SOF_DSP_PM_D3_COLD: dev_dbg(sdev->dev, "Current DSP power state: D3_COLD\n"); break; default: dev_dbg(sdev->dev, "Unknown DSP power state: %d\n", sdev->dsp_power_state.state); break; } } /* * All DSP power state transitions are initiated by the driver. * If the requested state change fails, the error is simply returned. * Further state transitions are attempted only when the set_power_save() op * is called again either because of a new IPC sent to the DSP or * during system suspend/resume. */ int hda_dsp_set_power_state(struct snd_sof_dev *sdev, const struct sof_dsp_power_state *target_state) { int ret = 0; /* * When the DSP is already in D0I3 and the target state is D0I3, * it could be the case that the DSP is in D0I3 during S0 * and the system is suspending to S0Ix. Therefore, * hda_dsp_set_D0_state() must be called to disable trace DMA * by sending the PM_GATE IPC to the FW. */ if (target_state->substate == SOF_HDA_DSP_PM_D0I3 && sdev->system_suspend_target == SOF_SUSPEND_S0IX) goto set_state; /* * For all other cases, return without doing anything if * the DSP is already in the target state. */ if (target_state->state == sdev->dsp_power_state.state && target_state->substate == sdev->dsp_power_state.substate) return 0; set_state: switch (target_state->state) { case SOF_DSP_PM_D0: ret = hda_dsp_set_D0_state(sdev, target_state); break; case SOF_DSP_PM_D3: /* The only allowed transition is: D0I0 -> D3 */ if (sdev->dsp_power_state.state == SOF_DSP_PM_D0 && sdev->dsp_power_state.substate == SOF_HDA_DSP_PM_D0I0) break; dev_err(sdev->dev, "error: transition from %d to %d not allowed\n", sdev->dsp_power_state.state, target_state->state); return -EINVAL; default: dev_err(sdev->dev, "error: target state unsupported %d\n", target_state->state); return -EINVAL; } if (ret < 0) { dev_err(sdev->dev, "failed to set requested target DSP state %d substate %d\n", target_state->state, target_state->substate); return ret; } sdev->dsp_power_state = *target_state; hda_dsp_state_log(sdev); return ret; } /* * Audio DSP states may transform as below:- * * Opportunistic D0I3 in S0 * Runtime +---------------------+ Delayed D0i3 work timeout * suspend | +--------------------+ * +------------+ D0I0(active) | | * | | <---------------+ | * | +--------> | New IPC | | * | |Runtime +--^--+---------^--+--+ (via mailbox) | | * | |resume | | | | | | * | | | | | | | | * | | System| | | | | | * | | resume| | S3/S0IX | | | | * | | | | suspend | | S0IX | | * | | | | | |suspend | | * | | | | | | | | * | | | | | | | | * +-v---+-----------+--v-------+ | | +------+----v----+ * | | | +-----------> | * | D3 (suspended) | | | D0I3 | * | | +--------------+ | * | | System resume | | * +----------------------------+ +----------------+ * * S0IX suspend: The DSP is in D0I3 if any D0I3-compatible streams * ignored the suspend trigger. Otherwise the DSP * is in D3. */ static int hda_suspend(struct snd_sof_dev *sdev, bool runtime_suspend) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; const struct sof_intel_dsp_desc *chip = hda->desc; #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) struct hdac_bus *bus = sof_to_bus(sdev); #endif int ret; hda_sdw_int_enable(sdev, false); /* disable IPC interrupts */ hda_dsp_ipc_int_disable(sdev); #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) if (runtime_suspend) hda_codec_jack_wake_enable(sdev); /* power down all hda link */ snd_hdac_ext_bus_link_power_down_all(bus); #endif /* power down DSP */ ret = hda_dsp_core_reset_power_down(sdev, chip->cores_mask); if (ret < 0) { dev_err(sdev->dev, "error: failed to power down core during suspend\n"); return ret; } /* disable ppcap interrupt */ hda_dsp_ctrl_ppcap_enable(sdev, false); hda_dsp_ctrl_ppcap_int_enable(sdev, false); /* disable hda bus irq and streams */ hda_dsp_ctrl_stop_chip(sdev); /* disable LP retention mode */ snd_sof_pci_update_bits(sdev, PCI_PGCTL, PCI_PGCTL_LSRMD_MASK, PCI_PGCTL_LSRMD_MASK); /* reset controller */ ret = hda_dsp_ctrl_link_reset(sdev, true); if (ret < 0) { dev_err(sdev->dev, "error: failed to reset controller during suspend\n"); return ret; } /* display codec can powered off after link reset */ hda_codec_i915_display_power(sdev, false); return 0; } static int hda_resume(struct snd_sof_dev *sdev, bool runtime_resume) { #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) struct hdac_bus *bus = sof_to_bus(sdev); struct hdac_ext_link *hlink = NULL; #endif int ret; /* display codec must be powered before link reset */ hda_codec_i915_display_power(sdev, true); /* * clear TCSEL to clear playback on some HD Audio * codecs. PCI TCSEL is defined in the Intel manuals. */ snd_sof_pci_update_bits(sdev, PCI_TCSEL, 0x07, 0); /* reset and start hda controller */ ret = hda_dsp_ctrl_init_chip(sdev, true); if (ret < 0) { dev_err(sdev->dev, "error: failed to start controller after resume\n"); return ret; } #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) /* check jack status */ if (runtime_resume) hda_codec_jack_check(sdev); /* turn off the links that were off before suspend */ list_for_each_entry(hlink, &bus->hlink_list, list) { if (!hlink->ref_count) snd_hdac_ext_bus_link_power_down(hlink); } /* check dma status and clean up CORB/RIRB buffers */ if (!bus->cmd_dma_state) snd_hdac_bus_stop_cmd_io(bus); #endif /* enable ppcap interrupt */ hda_dsp_ctrl_ppcap_enable(sdev, true); hda_dsp_ctrl_ppcap_int_enable(sdev, true); return 0; } int hda_dsp_resume(struct snd_sof_dev *sdev) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; struct pci_dev *pci = to_pci_dev(sdev->dev); const struct sof_dsp_power_state target_state = { .state = SOF_DSP_PM_D0, .substate = SOF_HDA_DSP_PM_D0I0, }; #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) struct hdac_bus *bus = sof_to_bus(sdev); struct hdac_ext_link *hlink = NULL; #endif int ret; /* resume from D0I3 */ if (sdev->dsp_power_state.state == SOF_DSP_PM_D0) { hda_codec_i915_display_power(sdev, true); #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) /* power up links that were active before suspend */ list_for_each_entry(hlink, &bus->hlink_list, list) { if (hlink->ref_count) { ret = snd_hdac_ext_bus_link_power_up(hlink); if (ret < 0) { dev_dbg(sdev->dev, "error %x in %s: failed to power up links", ret, __func__); return ret; } } } /* set up CORB/RIRB buffers if was on before suspend */ if (bus->cmd_dma_state) snd_hdac_bus_init_cmd_io(bus); #endif /* Set DSP power state */ ret = snd_sof_dsp_set_power_state(sdev, &target_state); if (ret < 0) { dev_err(sdev->dev, "error: setting dsp state %d substate %d\n", target_state.state, target_state.substate); return ret; } /* restore L1SEN bit */ if (hda->l1_support_changed) snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, HDA_VS_INTEL_EM2, HDA_VS_INTEL_EM2_L1SEN, 0); /* restore and disable the system wakeup */ pci_restore_state(pci); disable_irq_wake(pci->irq); return 0; } /* init hda controller. DSP cores will be powered up during fw boot */ ret = hda_resume(sdev, false); if (ret < 0) return ret; return snd_sof_dsp_set_power_state(sdev, &target_state); } int hda_dsp_runtime_resume(struct snd_sof_dev *sdev) { const struct sof_dsp_power_state target_state = { .state = SOF_DSP_PM_D0, }; int ret; /* init hda controller. DSP cores will be powered up during fw boot */ ret = hda_resume(sdev, true); if (ret < 0) return ret; return snd_sof_dsp_set_power_state(sdev, &target_state); } int hda_dsp_runtime_idle(struct snd_sof_dev *sdev) { struct hdac_bus *hbus = sof_to_bus(sdev); if (hbus->codec_powered) { dev_dbg(sdev->dev, "some codecs still powered (%08X), not idle\n", (unsigned int)hbus->codec_powered); return -EBUSY; } return 0; } int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev) { const struct sof_dsp_power_state target_state = { .state = SOF_DSP_PM_D3, }; int ret; /* stop hda controller and power dsp off */ ret = hda_suspend(sdev, true); if (ret < 0) return ret; return snd_sof_dsp_set_power_state(sdev, &target_state); } int hda_dsp_suspend(struct snd_sof_dev *sdev, u32 target_state) { struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; struct hdac_bus *bus = sof_to_bus(sdev); struct pci_dev *pci = to_pci_dev(sdev->dev); const struct sof_dsp_power_state target_dsp_state = { .state = target_state, .substate = target_state == SOF_DSP_PM_D0 ? SOF_HDA_DSP_PM_D0I3 : 0, }; int ret; /* cancel any attempt for DSP D0I3 */ cancel_delayed_work_sync(&hda->d0i3_work); if (target_state == SOF_DSP_PM_D0) { /* we can't keep a wakeref to display driver at suspend */ hda_codec_i915_display_power(sdev, false); /* Set DSP power state */ ret = snd_sof_dsp_set_power_state(sdev, &target_dsp_state); if (ret < 0) { dev_err(sdev->dev, "error: setting dsp state %d substate %d\n", target_dsp_state.state, target_dsp_state.substate); return ret; } /* enable L1SEN to make sure the system can enter S0Ix */ hda->l1_support_changed = snd_sof_dsp_update_bits(sdev, HDA_DSP_HDA_BAR, HDA_VS_INTEL_EM2, HDA_VS_INTEL_EM2_L1SEN, HDA_VS_INTEL_EM2_L1SEN); #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) /* stop the CORB/RIRB DMA if it is On */ if (bus->cmd_dma_state) snd_hdac_bus_stop_cmd_io(bus); /* no link can be powered in s0ix state */ ret = snd_hdac_ext_bus_link_power_down_all(bus); if (ret < 0) { dev_dbg(sdev->dev, "error %d in %s: failed to power down links", ret, __func__); return ret; } #endif /* enable the system waking up via IPC IRQ */ enable_irq_wake(pci->irq); pci_save_state(pci); return 0; } /* stop hda controller and power dsp off */ ret = hda_suspend(sdev, false); if (ret < 0) { dev_err(bus->dev, "error: suspending dsp\n"); return ret; } return snd_sof_dsp_set_power_state(sdev, &target_dsp_state); } int hda_dsp_set_hw_params_upon_resume(struct snd_sof_dev *sdev) { #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) struct hdac_bus *bus = sof_to_bus(sdev); struct snd_soc_pcm_runtime *rtd; struct hdac_ext_stream *stream; struct hdac_ext_link *link; struct hdac_stream *s; const char *name; int stream_tag; /* set internal flag for BE */ list_for_each_entry(s, &bus->stream_list, list) { stream = stream_to_hdac_ext_stream(s); /* * clear stream. This should already be taken care for running * streams when the SUSPEND trigger is called. But paused * streams do not get suspended, so this needs to be done * explicitly during suspend. */ if (stream->link_substream) { rtd = asoc_substream_to_rtd(stream->link_substream); name = asoc_rtd_to_codec(rtd, 0)->component->name; link = snd_hdac_ext_bus_get_link(bus, name); if (!link) return -EINVAL; stream->link_prepared = 0; if (hdac_stream(stream)->direction == SNDRV_PCM_STREAM_CAPTURE) continue; stream_tag = hdac_stream(stream)->stream_tag; snd_hdac_ext_link_clear_stream_id(link, stream_tag); } } #endif return 0; } void hda_dsp_d0i3_work(struct work_struct *work) { struct sof_intel_hda_dev *hdev = container_of(work, struct sof_intel_hda_dev, d0i3_work.work); struct hdac_bus *bus = &hdev->hbus.core; struct snd_sof_dev *sdev = dev_get_drvdata(bus->dev); struct sof_dsp_power_state target_state; int ret; target_state.state = SOF_DSP_PM_D0; /* DSP can enter D0I3 iff only D0I3-compatible streams are active */ if (snd_sof_dsp_only_d0i3_compatible_stream_active(sdev)) target_state.substate = SOF_HDA_DSP_PM_D0I3; else target_state.substate = SOF_HDA_DSP_PM_D0I0; /* remain in D0I0 */ if (target_state.substate == SOF_HDA_DSP_PM_D0I0) return; /* This can fail but error cannot be propagated */ ret = snd_sof_dsp_set_power_state(sdev, &target_state); if (ret < 0) dev_err_ratelimited(sdev->dev, "error: failed to set DSP state %d substate %d\n", target_state.state, target_state.substate); }