1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) 2 // 3 // Copyright 2019 NXP 4 // 5 // Author: Daniel Baluta <daniel.baluta@nxp.com> 6 // 7 8 #include <linux/firmware.h> 9 #include <linux/module.h> 10 #include <linux/pm_runtime.h> 11 #include <sound/sof.h> 12 13 #include "ops.h" 14 15 extern struct snd_sof_dsp_ops sof_imx8_ops; 16 extern struct snd_sof_dsp_ops sof_imx8x_ops; 17 18 /* platform specific devices */ 19 #if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8) 20 static struct sof_dev_desc sof_of_imx8qxp_desc = { 21 .default_fw_path = "imx/sof", 22 .default_tplg_path = "imx/sof-tplg", 23 .default_fw_filename = "sof-imx8x.ri", 24 .nocodec_tplg_filename = "sof-imx8-nocodec.tplg", 25 .ops = &sof_imx8x_ops, 26 }; 27 28 static struct sof_dev_desc sof_of_imx8qm_desc = { 29 .default_fw_path = "imx/sof", 30 .default_tplg_path = "imx/sof-tplg", 31 .default_fw_filename = "sof-imx8.ri", 32 .nocodec_tplg_filename = "sof-imx8-nocodec.tplg", 33 .ops = &sof_imx8_ops, 34 }; 35 #endif 36 37 static const struct dev_pm_ops sof_of_pm = { 38 SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume) 39 SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume, 40 NULL) 41 }; 42 43 static void sof_of_probe_complete(struct device *dev) 44 { 45 /* allow runtime_pm */ 46 pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS); 47 pm_runtime_use_autosuspend(dev); 48 pm_runtime_enable(dev); 49 } 50 51 static int sof_of_probe(struct platform_device *pdev) 52 { 53 struct device *dev = &pdev->dev; 54 const struct sof_dev_desc *desc; 55 struct snd_sof_pdata *sof_pdata; 56 const struct snd_sof_dsp_ops *ops; 57 int ret; 58 59 dev_info(&pdev->dev, "DT DSP detected"); 60 61 sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL); 62 if (!sof_pdata) 63 return -ENOMEM; 64 65 desc = device_get_match_data(dev); 66 if (!desc) 67 return -ENODEV; 68 69 /* get ops for platform */ 70 ops = desc->ops; 71 if (!ops) { 72 dev_err(dev, "error: no matching DT descriptor ops\n"); 73 return -ENODEV; 74 } 75 76 sof_pdata->desc = desc; 77 sof_pdata->dev = &pdev->dev; 78 sof_pdata->fw_filename = desc->default_fw_filename; 79 80 /* TODO: read alternate fw and tplg filenames from DT */ 81 sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path; 82 sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path; 83 84 #if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE) 85 /* set callback to enable runtime_pm */ 86 sof_pdata->sof_probe_complete = sof_of_probe_complete; 87 #endif 88 /* call sof helper for DSP hardware probe */ 89 ret = snd_sof_device_probe(dev, sof_pdata); 90 if (ret) { 91 dev_err(dev, "error: failed to probe DSP hardware\n"); 92 return ret; 93 } 94 95 #if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE) 96 sof_of_probe_complete(dev); 97 #endif 98 99 return ret; 100 } 101 102 static int sof_of_remove(struct platform_device *pdev) 103 { 104 pm_runtime_disable(&pdev->dev); 105 106 /* call sof helper for DSP hardware remove */ 107 snd_sof_device_remove(&pdev->dev); 108 109 return 0; 110 } 111 112 static const struct of_device_id sof_of_ids[] = { 113 #if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8) 114 { .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc}, 115 { .compatible = "fsl,imx8qm-dsp", .data = &sof_of_imx8qm_desc}, 116 #endif 117 { } 118 }; 119 MODULE_DEVICE_TABLE(of, sof_of_ids); 120 121 /* DT driver definition */ 122 static struct platform_driver snd_sof_of_driver = { 123 .probe = sof_of_probe, 124 .remove = sof_of_remove, 125 .driver = { 126 .name = "sof-audio-of", 127 .pm = &sof_of_pm, 128 .of_match_table = sof_of_ids, 129 }, 130 }; 131 module_platform_driver(snd_sof_of_driver); 132 133 MODULE_LICENSE("Dual BSD/GPL"); 134