| // SPDX-License-Identifier: GPL-2.0+ |
| /* Copyright 2019 NXP |
| */ |
| #include <linux/device.h> |
| #include <linux/debugfs.h> |
| #include <linux/fsl/ptp_qoriq.h> |
| |
| static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val) |
| { |
| struct qoriq_ptp *qoriq_ptp = data; |
| struct qoriq_ptp_registers *regs = &qoriq_ptp->regs; |
| u32 ctrl; |
| |
| ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl); |
| *val = ctrl & PP1L ? 1 : 0; |
| |
| return 0; |
| } |
| |
| static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val) |
| { |
| struct qoriq_ptp *qoriq_ptp = data; |
| struct qoriq_ptp_registers *regs = &qoriq_ptp->regs; |
| u32 ctrl; |
| |
| ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl); |
| if (val == 0) |
| ctrl &= ~PP1L; |
| else |
| ctrl |= PP1L; |
| |
| qoriq_write(®s->ctrl_regs->tmr_ctrl, ctrl); |
| return 0; |
| } |
| |
| DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper1_fops, ptp_qoriq_fiper1_lpbk_get, |
| ptp_qoriq_fiper1_lpbk_set, "%llu\n"); |
| |
| static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val) |
| { |
| struct qoriq_ptp *qoriq_ptp = data; |
| struct qoriq_ptp_registers *regs = &qoriq_ptp->regs; |
| u32 ctrl; |
| |
| ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl); |
| *val = ctrl & PP2L ? 1 : 0; |
| |
| return 0; |
| } |
| |
| static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val) |
| { |
| struct qoriq_ptp *qoriq_ptp = data; |
| struct qoriq_ptp_registers *regs = &qoriq_ptp->regs; |
| u32 ctrl; |
| |
| ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl); |
| if (val == 0) |
| ctrl &= ~PP2L; |
| else |
| ctrl |= PP2L; |
| |
| qoriq_write(®s->ctrl_regs->tmr_ctrl, ctrl); |
| return 0; |
| } |
| |
| DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper2_fops, ptp_qoriq_fiper2_lpbk_get, |
| ptp_qoriq_fiper2_lpbk_set, "%llu\n"); |
| |
| void ptp_qoriq_create_debugfs(struct qoriq_ptp *qoriq_ptp) |
| { |
| struct dentry *root; |
| |
| root = debugfs_create_dir(dev_name(qoriq_ptp->dev), NULL); |
| if (IS_ERR(root)) |
| return; |
| if (!root) |
| goto err_root; |
| |
| qoriq_ptp->debugfs_root = root; |
| |
| if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root, |
| qoriq_ptp, &ptp_qoriq_fiper1_fops)) |
| goto err_node; |
| if (!debugfs_create_file_unsafe("fiper2-loopback", 0600, root, |
| qoriq_ptp, &ptp_qoriq_fiper2_fops)) |
| goto err_node; |
| return; |
| |
| err_node: |
| debugfs_remove_recursive(root); |
| qoriq_ptp->debugfs_root = NULL; |
| err_root: |
| dev_err(qoriq_ptp->dev, "failed to initialize debugfs\n"); |
| } |
| |
| void ptp_qoriq_remove_debugfs(struct qoriq_ptp *qoriq_ptp) |
| { |
| debugfs_remove_recursive(qoriq_ptp->debugfs_root); |
| qoriq_ptp->debugfs_root = NULL; |
| } |