1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 8 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> 9 // 10 11 #include <linux/firmware.h> 12 #include <linux/dmi.h> 13 #include <linux/module.h> 14 #include <linux/pci.h> 15 #include <linux/pm_runtime.h> 16 #include <sound/soc-acpi.h> 17 #include <sound/soc-acpi-intel-match.h> 18 #include <sound/sof.h> 19 #include "ops.h" 20 #include "sof-pci-dev.h" 21 22 static char *fw_path; 23 module_param(fw_path, charp, 0444); 24 MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware."); 25 26 static char *tplg_path; 27 module_param(tplg_path, charp, 0444); 28 MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology."); 29 30 static int sof_pci_debug; 31 module_param_named(sof_pci_debug, sof_pci_debug, int, 0444); 32 MODULE_PARM_DESC(sof_pci_debug, "SOF PCI debug options (0x0 all off)"); 33 34 static const char *sof_override_tplg_name; 35 36 #define SOF_PCI_DISABLE_PM_RUNTIME BIT(0) 37 38 static int sof_tplg_cb(const struct dmi_system_id *id) 39 { 40 sof_override_tplg_name = id->driver_data; 41 return 1; 42 } 43 44 static const struct dmi_system_id sof_tplg_table[] = { 45 { 46 .callback = sof_tplg_cb, 47 .matches = { 48 DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Volteer"), 49 DMI_MATCH(DMI_OEM_STRING, "AUDIO-MAX98373_ALC5682I_I2S_UP4"), 50 }, 51 .driver_data = "sof-tgl-rt5682-ssp0-max98373-ssp2.tplg", 52 }, 53 {} 54 }; 55 56 static const struct dmi_system_id community_key_platforms[] = { 57 { 58 .ident = "Up Squared", 59 .matches = { 60 DMI_MATCH(DMI_SYS_VENDOR, "AAEON"), 61 DMI_MATCH(DMI_BOARD_NAME, "UP-APL01"), 62 } 63 }, 64 { 65 .ident = "Up Extreme", 66 .matches = { 67 DMI_MATCH(DMI_SYS_VENDOR, "AAEON"), 68 DMI_MATCH(DMI_BOARD_NAME, "UP-WHL01"), 69 } 70 }, 71 { 72 .ident = "Google Chromebooks", 73 .matches = { 74 DMI_MATCH(DMI_SYS_VENDOR, "Google"), 75 } 76 }, 77 {}, 78 }; 79 80 const struct dev_pm_ops sof_pci_pm = { 81 .prepare = snd_sof_prepare, 82 .complete = snd_sof_complete, 83 SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume) 84 SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume, 85 snd_sof_runtime_idle) 86 }; 87 EXPORT_SYMBOL_NS(sof_pci_pm, SND_SOC_SOF_PCI_DEV); 88 89 static void sof_pci_probe_complete(struct device *dev) 90 { 91 dev_dbg(dev, "Completing SOF PCI probe"); 92 93 if (sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME) 94 return; 95 96 /* allow runtime_pm */ 97 pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS); 98 pm_runtime_use_autosuspend(dev); 99 100 /* 101 * runtime pm for pci device is "forbidden" by default. 102 * so call pm_runtime_allow() to enable it. 103 */ 104 pm_runtime_allow(dev); 105 106 /* mark last_busy for pm_runtime to make sure not suspend immediately */ 107 pm_runtime_mark_last_busy(dev); 108 109 /* follow recommendation in pci-driver.c to decrement usage counter */ 110 pm_runtime_put_noidle(dev); 111 } 112 113 int sof_pci_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) 114 { 115 struct device *dev = &pci->dev; 116 const struct sof_dev_desc *desc = 117 (const struct sof_dev_desc *)pci_id->driver_data; 118 struct snd_sof_pdata *sof_pdata; 119 int ret; 120 121 dev_dbg(&pci->dev, "PCI DSP detected"); 122 123 if (!desc->ops) { 124 dev_err(dev, "error: no matching PCI descriptor ops\n"); 125 return -ENODEV; 126 } 127 128 sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL); 129 if (!sof_pdata) 130 return -ENOMEM; 131 132 ret = pcim_enable_device(pci); 133 if (ret < 0) 134 return ret; 135 136 ret = pci_request_regions(pci, "Audio DSP"); 137 if (ret < 0) 138 return ret; 139 140 sof_pdata->name = pci_name(pci); 141 sof_pdata->desc = desc; 142 sof_pdata->dev = dev; 143 sof_pdata->fw_filename = desc->default_fw_filename; 144 145 /* 146 * for platforms using the SOF community key, change the 147 * default path automatically to pick the right files from the 148 * linux-firmware tree. This can be overridden with the 149 * fw_path kernel parameter, e.g. for developers. 150 */ 151 152 /* alternate fw and tplg filenames ? */ 153 if (fw_path) { 154 sof_pdata->fw_filename_prefix = fw_path; 155 156 dev_dbg(dev, 157 "Module parameter used, changed fw path to %s\n", 158 sof_pdata->fw_filename_prefix); 159 160 } else if (dmi_check_system(community_key_platforms)) { 161 sof_pdata->fw_filename_prefix = 162 devm_kasprintf(dev, GFP_KERNEL, "%s/%s", 163 sof_pdata->desc->default_fw_path, 164 "community"); 165 166 dev_dbg(dev, 167 "Platform uses community key, changed fw path to %s\n", 168 sof_pdata->fw_filename_prefix); 169 } else { 170 sof_pdata->fw_filename_prefix = 171 sof_pdata->desc->default_fw_path; 172 } 173 174 if (tplg_path) 175 sof_pdata->tplg_filename_prefix = tplg_path; 176 else 177 sof_pdata->tplg_filename_prefix = 178 sof_pdata->desc->default_tplg_path; 179 180 dmi_check_system(sof_tplg_table); 181 if (sof_override_tplg_name) 182 sof_pdata->tplg_filename = sof_override_tplg_name; 183 184 /* set callback to be called on successful device probe to enable runtime_pm */ 185 sof_pdata->sof_probe_complete = sof_pci_probe_complete; 186 187 /* call sof helper for DSP hardware probe */ 188 ret = snd_sof_device_probe(dev, sof_pdata); 189 if (ret) 190 pci_release_regions(pci); 191 192 return ret; 193 } 194 EXPORT_SYMBOL_NS(sof_pci_probe, SND_SOC_SOF_PCI_DEV); 195 196 void sof_pci_remove(struct pci_dev *pci) 197 { 198 /* call sof helper for DSP hardware remove */ 199 snd_sof_device_remove(&pci->dev); 200 201 /* follow recommendation in pci-driver.c to increment usage counter */ 202 if (snd_sof_device_probe_completed(&pci->dev) && 203 !(sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME)) 204 pm_runtime_get_noresume(&pci->dev); 205 206 /* release pci regions and disable device */ 207 pci_release_regions(pci); 208 } 209 EXPORT_SYMBOL_NS(sof_pci_remove, SND_SOC_SOF_PCI_DEV); 210 211 void sof_pci_shutdown(struct pci_dev *pci) 212 { 213 snd_sof_device_shutdown(&pci->dev); 214 } 215 EXPORT_SYMBOL_NS(sof_pci_shutdown, SND_SOC_SOF_PCI_DEV); 216 217 MODULE_LICENSE("Dual BSD/GPL"); 218