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 <ufs/ufshcd.h> 11 #include "ufshcd-dwc.h" 12 #include "tc-dwc-g210.h" 13 14 #include <linux/module.h> 15 #include <linux/pci.h> 16 #include <linux/pm_runtime.h> 17 18 /* Test Chip type expected values */ 19 #define TC_G210_20BIT 20 20 #define TC_G210_40BIT 40 21 #define TC_G210_INV 0 22 23 static int tc_type = TC_G210_INV; 24 module_param(tc_type, int, 0); 25 MODULE_PARM_DESC(tc_type, "Test Chip Type (20 = 20-bit, 40 = 40-bit)"); 26 27 /* 28 * struct ufs_hba_dwc_vops - UFS DWC specific variant operations 29 */ 30 static struct ufs_hba_variant_ops tc_dwc_g210_pci_hba_vops = { 31 .name = "tc-dwc-g210-pci", 32 .link_startup_notify = ufshcd_dwc_link_startup_notify, 33 }; 34 35 /** 36 * tc_dwc_g210_pci_shutdown - main function to put the controller in reset state 37 * @pdev: pointer to PCI device handle 38 */ 39 static void tc_dwc_g210_pci_shutdown(struct pci_dev *pdev) 40 { 41 ufshcd_shutdown((struct ufs_hba *)pci_get_drvdata(pdev)); 42 } 43 44 /** 45 * tc_dwc_g210_pci_remove - de-allocate PCI/SCSI host and host memory space 46 * data structure memory 47 * @pdev: pointer to PCI handle 48 */ 49 static void tc_dwc_g210_pci_remove(struct pci_dev *pdev) 50 { 51 struct ufs_hba *hba = pci_get_drvdata(pdev); 52 53 pm_runtime_forbid(&pdev->dev); 54 pm_runtime_get_noresume(&pdev->dev); 55 ufshcd_remove(hba); 56 } 57 58 /** 59 * tc_dwc_g210_pci_probe - probe routine of the driver 60 * @pdev: pointer to PCI device handle 61 * @id: PCI device id 62 * 63 * Returns 0 on success, non-zero value on failure 64 */ 65 static int 66 tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) 67 { 68 struct ufs_hba *hba; 69 void __iomem *mmio_base; 70 int err; 71 72 /* Check Test Chip type and set the specific setup routine */ 73 if (tc_type == TC_G210_20BIT) { 74 tc_dwc_g210_pci_hba_vops.phy_initialization = 75 tc_dwc_g210_config_20_bit; 76 } else if (tc_type == TC_G210_40BIT) { 77 tc_dwc_g210_pci_hba_vops.phy_initialization = 78 tc_dwc_g210_config_40_bit; 79 } else { 80 dev_err(&pdev->dev, "test chip version not specified\n"); 81 return -EPERM; 82 } 83 84 err = pcim_enable_device(pdev); 85 if (err) { 86 dev_err(&pdev->dev, "pcim_enable_device failed\n"); 87 return err; 88 } 89 90 pci_set_master(pdev); 91 92 err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD); 93 if (err < 0) { 94 dev_err(&pdev->dev, "request and iomap failed\n"); 95 return err; 96 } 97 98 mmio_base = pcim_iomap_table(pdev)[0]; 99 100 err = ufshcd_alloc_host(&pdev->dev, &hba); 101 if (err) { 102 dev_err(&pdev->dev, "Allocation failed\n"); 103 return err; 104 } 105 106 hba->vops = &tc_dwc_g210_pci_hba_vops; 107 108 err = ufshcd_init(hba, mmio_base, pdev->irq); 109 if (err) { 110 dev_err(&pdev->dev, "Initialization failed\n"); 111 return err; 112 } 113 114 pm_runtime_put_noidle(&pdev->dev); 115 pm_runtime_allow(&pdev->dev); 116 117 return 0; 118 } 119 120 static const struct dev_pm_ops tc_dwc_g210_pci_pm_ops = { 121 SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume) 122 SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL) 123 .prepare = ufshcd_suspend_prepare, 124 .complete = ufshcd_resume_complete, 125 }; 126 127 static const struct pci_device_id tc_dwc_g210_pci_tbl[] = { 128 { PCI_VENDOR_ID_SYNOPSYS, 0xB101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 129 { PCI_VENDOR_ID_SYNOPSYS, 0xB102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 130 { } /* terminate list */ 131 }; 132 133 MODULE_DEVICE_TABLE(pci, tc_dwc_g210_pci_tbl); 134 135 static struct pci_driver tc_dwc_g210_pci_driver = { 136 .name = "tc-dwc-g210-pci", 137 .id_table = tc_dwc_g210_pci_tbl, 138 .probe = tc_dwc_g210_pci_probe, 139 .remove = tc_dwc_g210_pci_remove, 140 .shutdown = tc_dwc_g210_pci_shutdown, 141 .driver = { 142 .pm = &tc_dwc_g210_pci_pm_ops 143 }, 144 }; 145 146 module_pci_driver(tc_dwc_g210_pci_driver); 147 148 MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>"); 149 MODULE_DESCRIPTION("Synopsys Test Chip G210 PCI glue driver"); 150 MODULE_LICENSE("Dual BSD/GPL"); 151