1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Synopsys G210 Test Chip driver 4 * 5 * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com) 6 * 7 * Authors: Joao Pinto <jpinto@synopsys.com> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/platform_device.h> 13 #include <linux/of.h> 14 #include <linux/delay.h> 15 #include <linux/pm_runtime.h> 16 17 #include "ufshcd-pltfrm.h" 18 #include "ufshcd-dwc.h" 19 #include "tc-dwc-g210.h" 20 21 /* 22 * UFS DWC specific variant operations 23 */ 24 static struct ufs_hba_variant_ops tc_dwc_g210_20bit_pltfm_hba_vops = { 25 .name = "tc-dwc-g210-pltfm", 26 .link_startup_notify = ufshcd_dwc_link_startup_notify, 27 .phy_initialization = tc_dwc_g210_config_20_bit, 28 }; 29 30 static struct ufs_hba_variant_ops tc_dwc_g210_40bit_pltfm_hba_vops = { 31 .name = "tc-dwc-g210-pltfm", 32 .link_startup_notify = ufshcd_dwc_link_startup_notify, 33 .phy_initialization = tc_dwc_g210_config_40_bit, 34 }; 35 36 static const struct of_device_id tc_dwc_g210_pltfm_match[] = { 37 { 38 .compatible = "snps,g210-tc-6.00-20bit", 39 .data = &tc_dwc_g210_20bit_pltfm_hba_vops, 40 }, 41 { 42 .compatible = "snps,g210-tc-6.00-40bit", 43 .data = &tc_dwc_g210_40bit_pltfm_hba_vops, 44 }, 45 { }, 46 }; 47 MODULE_DEVICE_TABLE(of, tc_dwc_g210_pltfm_match); 48 49 /** 50 * tc_dwc_g210_pltfm_probe() 51 * @pdev: pointer to platform device structure 52 * 53 */ 54 static int tc_dwc_g210_pltfm_probe(struct platform_device *pdev) 55 { 56 int err; 57 const struct of_device_id *of_id; 58 struct ufs_hba_variant_ops *vops; 59 struct device *dev = &pdev->dev; 60 61 of_id = of_match_node(tc_dwc_g210_pltfm_match, dev->of_node); 62 vops = (struct ufs_hba_variant_ops *)of_id->data; 63 64 /* Perform generic probe */ 65 err = ufshcd_pltfrm_init(pdev, vops); 66 if (err) 67 dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err); 68 69 return err; 70 } 71 72 /** 73 * tc_dwc_g210_pltfm_remove() 74 * @pdev: pointer to platform device structure 75 * 76 */ 77 static int tc_dwc_g210_pltfm_remove(struct platform_device *pdev) 78 { 79 struct ufs_hba *hba = platform_get_drvdata(pdev); 80 81 pm_runtime_get_sync(&(pdev)->dev); 82 ufshcd_remove(hba); 83 84 return 0; 85 } 86 87 static const struct dev_pm_ops tc_dwc_g210_pltfm_pm_ops = { 88 SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume) 89 SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL) 90 }; 91 92 static struct platform_driver tc_dwc_g210_pltfm_driver = { 93 .probe = tc_dwc_g210_pltfm_probe, 94 .remove = tc_dwc_g210_pltfm_remove, 95 .driver = { 96 .name = "tc-dwc-g210-pltfm", 97 .pm = &tc_dwc_g210_pltfm_pm_ops, 98 .of_match_table = of_match_ptr(tc_dwc_g210_pltfm_match), 99 }, 100 }; 101 102 module_platform_driver(tc_dwc_g210_pltfm_driver); 103 104 MODULE_ALIAS("platform:tc-dwc-g210-pltfm"); 105 MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver"); 106 MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>"); 107 MODULE_LICENSE("Dual BSD/GPL"); 108