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- // 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 ptp_qoriq *ptp_qoriq = data;
- struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
- u32 ctrl;
- ctrl = ptp_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 ptp_qoriq *ptp_qoriq = data;
- struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
- u32 ctrl;
- ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
- if (val == 0)
- ctrl &= ~PP1L;
- else
- ctrl |= PP1L;
- ptp_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 ptp_qoriq *ptp_qoriq = data;
- struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
- u32 ctrl;
- ctrl = ptp_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 ptp_qoriq *ptp_qoriq = data;
- struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
- u32 ctrl;
- ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
- if (val == 0)
- ctrl &= ~PP2L;
- else
- ctrl |= PP2L;
- ptp_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 ptp_qoriq *ptp_qoriq)
- {
- struct dentry *root;
- root = debugfs_create_dir(dev_name(ptp_qoriq->dev), NULL);
- if (IS_ERR(root))
- return;
- if (!root)
- goto err_root;
- ptp_qoriq->debugfs_root = root;
- if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root,
- ptp_qoriq, &ptp_qoriq_fiper1_fops))
- goto err_node;
- if (!debugfs_create_file_unsafe("fiper2-loopback", 0600, root,
- ptp_qoriq, &ptp_qoriq_fiper2_fops))
- goto err_node;
- return;
- err_node:
- debugfs_remove_recursive(root);
- ptp_qoriq->debugfs_root = NULL;
- err_root:
- dev_err(ptp_qoriq->dev, "failed to initialize debugfs\n");
- }
- void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq)
- {
- debugfs_remove_recursive(ptp_qoriq->debugfs_root);
- ptp_qoriq->debugfs_root = NULL;
- }
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