1 // SPDX-License-Identifier: GPL-2.0+ 2 /* Copyright 2019 NXP 3 */ 4 #include <linux/device.h> 5 #include <linux/debugfs.h> 6 #include <linux/fsl/ptp_qoriq.h> 7 8 static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val) 9 { 10 struct ptp_qoriq *ptp_qoriq = data; 11 struct ptp_qoriq_registers *regs = &ptp_qoriq->regs; 12 u32 ctrl; 13 14 ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl); 15 *val = ctrl & PP1L ? 1 : 0; 16 17 return 0; 18 } 19 20 static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val) 21 { 22 struct ptp_qoriq *ptp_qoriq = data; 23 struct ptp_qoriq_registers *regs = &ptp_qoriq->regs; 24 u32 ctrl; 25 26 ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl); 27 if (val == 0) 28 ctrl &= ~PP1L; 29 else 30 ctrl |= PP1L; 31 32 ptp_qoriq->write(®s->ctrl_regs->tmr_ctrl, ctrl); 33 return 0; 34 } 35 36 DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper1_fops, ptp_qoriq_fiper1_lpbk_get, 37 ptp_qoriq_fiper1_lpbk_set, "%llu\n"); 38 39 static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val) 40 { 41 struct ptp_qoriq *ptp_qoriq = data; 42 struct ptp_qoriq_registers *regs = &ptp_qoriq->regs; 43 u32 ctrl; 44 45 ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl); 46 *val = ctrl & PP2L ? 1 : 0; 47 48 return 0; 49 } 50 51 static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val) 52 { 53 struct ptp_qoriq *ptp_qoriq = data; 54 struct ptp_qoriq_registers *regs = &ptp_qoriq->regs; 55 u32 ctrl; 56 57 ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl); 58 if (val == 0) 59 ctrl &= ~PP2L; 60 else 61 ctrl |= PP2L; 62 63 ptp_qoriq->write(®s->ctrl_regs->tmr_ctrl, ctrl); 64 return 0; 65 } 66 67 DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper2_fops, ptp_qoriq_fiper2_lpbk_get, 68 ptp_qoriq_fiper2_lpbk_set, "%llu\n"); 69 70 void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq) 71 { 72 struct dentry *root; 73 74 root = debugfs_create_dir(dev_name(ptp_qoriq->dev), NULL); 75 if (IS_ERR(root)) 76 return; 77 if (!root) 78 goto err_root; 79 80 ptp_qoriq->debugfs_root = root; 81 82 if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root, 83 ptp_qoriq, &ptp_qoriq_fiper1_fops)) 84 goto err_node; 85 if (!debugfs_create_file_unsafe("fiper2-loopback", 0600, root, 86 ptp_qoriq, &ptp_qoriq_fiper2_fops)) 87 goto err_node; 88 return; 89 90 err_node: 91 debugfs_remove_recursive(root); 92 ptp_qoriq->debugfs_root = NULL; 93 err_root: 94 dev_err(ptp_qoriq->dev, "failed to initialize debugfs\n"); 95 } 96 97 void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq) 98 { 99 debugfs_remove_recursive(ptp_qoriq->debugfs_root); 100 ptp_qoriq->debugfs_root = NULL; 101 } 102