| Joao Pinto | fc040a3 | 2016-05-11 12:21:32 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Synopsys G210 Test Chip driver |
| 3 | * |
| 4 | * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com) |
| 5 | * |
| 6 | * Authors: Joao Pinto <jpinto@synopsys.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/of.h> |
| 17 | #include <linux/delay.h> |
| 18 | |
| 19 | #include "ufshcd-pltfrm.h" |
| 20 | #include "ufshcd-dwc.h" |
| 21 | #include "tc-dwc-g210.h" |
| 22 | |
| 23 | /** |
| 24 | * UFS DWC specific variant operations |
| 25 | */ |
| 26 | static struct ufs_hba_variant_ops tc_dwc_g210_20bit_pltfm_hba_vops = { |
| 27 | .name = "tc-dwc-g210-pltfm", |
| 28 | .link_startup_notify = ufshcd_dwc_link_startup_notify, |
| 29 | .phy_initialization = tc_dwc_g210_config_20_bit, |
| 30 | }; |
| 31 | |
| 32 | static struct ufs_hba_variant_ops tc_dwc_g210_40bit_pltfm_hba_vops = { |
| 33 | .name = "tc-dwc-g210-pltfm", |
| 34 | .link_startup_notify = ufshcd_dwc_link_startup_notify, |
| 35 | .phy_initialization = tc_dwc_g210_config_40_bit, |
| 36 | }; |
| 37 | |
| 38 | static const struct of_device_id tc_dwc_g210_pltfm_match[] = { |
| 39 | { |
| 40 | .compatible = "snps,g210-tc-6.00-20bit", |
| 41 | .data = &tc_dwc_g210_20bit_pltfm_hba_vops, |
| 42 | }, |
| 43 | { |
| 44 | .compatible = "snps,g210-tc-6.00-40bit", |
| 45 | .data = &tc_dwc_g210_40bit_pltfm_hba_vops, |
| 46 | }, |
| 47 | { }, |
| 48 | }; |
| 49 | MODULE_DEVICE_TABLE(of, tc_dwc_g210_pltfm_match); |
| 50 | |
| 51 | /** |
| 52 | * tc_dwc_g210_pltfm_probe() |
| 53 | * @pdev: pointer to platform device structure |
| 54 | * |
| 55 | */ |
| 56 | static int tc_dwc_g210_pltfm_probe(struct platform_device *pdev) |
| 57 | { |
| 58 | int err; |
| 59 | const struct of_device_id *of_id; |
| 60 | struct ufs_hba_variant_ops *vops; |
| 61 | struct device *dev = &pdev->dev; |
| 62 | |
| 63 | of_id = of_match_node(tc_dwc_g210_pltfm_match, dev->of_node); |
| 64 | vops = (struct ufs_hba_variant_ops *)of_id->data; |
| 65 | |
| 66 | /* Perform generic probe */ |
| 67 | err = ufshcd_pltfrm_init(pdev, vops); |
| 68 | if (err) |
| 69 | dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err); |
| 70 | |
| 71 | return err; |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * tc_dwc_g210_pltfm_remove() |
| 76 | * @pdev: pointer to platform device structure |
| 77 | * |
| 78 | */ |
| 79 | static int tc_dwc_g210_pltfm_remove(struct platform_device *pdev) |
| 80 | { |
| 81 | struct ufs_hba *hba = platform_get_drvdata(pdev); |
| 82 | |
| 83 | pm_runtime_get_sync(&(pdev)->dev); |
| 84 | ufshcd_remove(hba); |
| 85 | |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | static const struct dev_pm_ops tc_dwc_g210_pltfm_pm_ops = { |
| 90 | .suspend = ufshcd_pltfrm_suspend, |
| 91 | .resume = ufshcd_pltfrm_resume, |
| 92 | .runtime_suspend = ufshcd_pltfrm_runtime_suspend, |
| 93 | .runtime_resume = ufshcd_pltfrm_runtime_resume, |
| 94 | .runtime_idle = ufshcd_pltfrm_runtime_idle, |
| 95 | }; |
| 96 | |
| 97 | static struct platform_driver tc_dwc_g210_pltfm_driver = { |
| 98 | .probe = tc_dwc_g210_pltfm_probe, |
| 99 | .remove = tc_dwc_g210_pltfm_remove, |
| 100 | .shutdown = ufshcd_pltfrm_shutdown, |
| 101 | .driver = { |
| 102 | .name = "tc-dwc-g210-pltfm", |
| 103 | .pm = &tc_dwc_g210_pltfm_pm_ops, |
| 104 | .of_match_table = of_match_ptr(tc_dwc_g210_pltfm_match), |
| 105 | }, |
| 106 | }; |
| 107 | |
| 108 | module_platform_driver(tc_dwc_g210_pltfm_driver); |
| 109 | |
| 110 | MODULE_ALIAS("platform:tc-dwc-g210-pltfm"); |
| 111 | MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver"); |
| 112 | MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>"); |
| 113 | MODULE_LICENSE("Dual BSD/GPL"); |