xref: /linux/drivers/ptp/ptp_qoriq_debugfs.c (revision f038ddf25b80be90e1af9439935bdb66fdbf5e28)
119df7510SYangbo Lu // SPDX-License-Identifier: GPL-2.0+
219df7510SYangbo Lu /* Copyright 2019 NXP
319df7510SYangbo Lu  */
419df7510SYangbo Lu #include <linux/device.h>
519df7510SYangbo Lu #include <linux/debugfs.h>
619df7510SYangbo Lu #include <linux/fsl/ptp_qoriq.h>
719df7510SYangbo Lu 
819df7510SYangbo Lu static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val)
919df7510SYangbo Lu {
101e562c81SYangbo Lu 	struct ptp_qoriq *ptp_qoriq = data;
111e562c81SYangbo Lu 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
1219df7510SYangbo Lu 	u32 ctrl;
1319df7510SYangbo Lu 
14*f038ddf2SYangbo Lu 	ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
1519df7510SYangbo Lu 	*val = ctrl & PP1L ? 1 : 0;
1619df7510SYangbo Lu 
1719df7510SYangbo Lu 	return 0;
1819df7510SYangbo Lu }
1919df7510SYangbo Lu 
2019df7510SYangbo Lu static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val)
2119df7510SYangbo Lu {
221e562c81SYangbo Lu 	struct ptp_qoriq *ptp_qoriq = data;
231e562c81SYangbo Lu 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
2419df7510SYangbo Lu 	u32 ctrl;
2519df7510SYangbo Lu 
26*f038ddf2SYangbo Lu 	ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
2719df7510SYangbo Lu 	if (val == 0)
2819df7510SYangbo Lu 		ctrl &= ~PP1L;
2919df7510SYangbo Lu 	else
3019df7510SYangbo Lu 		ctrl |= PP1L;
3119df7510SYangbo Lu 
32*f038ddf2SYangbo Lu 	ptp_qoriq->write(&regs->ctrl_regs->tmr_ctrl, ctrl);
3319df7510SYangbo Lu 	return 0;
3419df7510SYangbo Lu }
3519df7510SYangbo Lu 
3684239b44SYueHaibing DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper1_fops, ptp_qoriq_fiper1_lpbk_get,
3719df7510SYangbo Lu 			 ptp_qoriq_fiper1_lpbk_set, "%llu\n");
3819df7510SYangbo Lu 
3919df7510SYangbo Lu static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val)
4019df7510SYangbo Lu {
411e562c81SYangbo Lu 	struct ptp_qoriq *ptp_qoriq = data;
421e562c81SYangbo Lu 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
4319df7510SYangbo Lu 	u32 ctrl;
4419df7510SYangbo Lu 
45*f038ddf2SYangbo Lu 	ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
4619df7510SYangbo Lu 	*val = ctrl & PP2L ? 1 : 0;
4719df7510SYangbo Lu 
4819df7510SYangbo Lu 	return 0;
4919df7510SYangbo Lu }
5019df7510SYangbo Lu 
5119df7510SYangbo Lu static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val)
5219df7510SYangbo Lu {
531e562c81SYangbo Lu 	struct ptp_qoriq *ptp_qoriq = data;
541e562c81SYangbo Lu 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
5519df7510SYangbo Lu 	u32 ctrl;
5619df7510SYangbo Lu 
57*f038ddf2SYangbo Lu 	ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
5819df7510SYangbo Lu 	if (val == 0)
5919df7510SYangbo Lu 		ctrl &= ~PP2L;
6019df7510SYangbo Lu 	else
6119df7510SYangbo Lu 		ctrl |= PP2L;
6219df7510SYangbo Lu 
63*f038ddf2SYangbo Lu 	ptp_qoriq->write(&regs->ctrl_regs->tmr_ctrl, ctrl);
6419df7510SYangbo Lu 	return 0;
6519df7510SYangbo Lu }
6619df7510SYangbo Lu 
6784239b44SYueHaibing DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper2_fops, ptp_qoriq_fiper2_lpbk_get,
6819df7510SYangbo Lu 			 ptp_qoriq_fiper2_lpbk_set, "%llu\n");
6919df7510SYangbo Lu 
701e562c81SYangbo Lu void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq)
7119df7510SYangbo Lu {
7219df7510SYangbo Lu 	struct dentry *root;
7319df7510SYangbo Lu 
741e562c81SYangbo Lu 	root = debugfs_create_dir(dev_name(ptp_qoriq->dev), NULL);
7519df7510SYangbo Lu 	if (IS_ERR(root))
7619df7510SYangbo Lu 		return;
7719df7510SYangbo Lu 	if (!root)
7819df7510SYangbo Lu 		goto err_root;
7919df7510SYangbo Lu 
801e562c81SYangbo Lu 	ptp_qoriq->debugfs_root = root;
8119df7510SYangbo Lu 
8284239b44SYueHaibing 	if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root,
831e562c81SYangbo Lu 					ptp_qoriq, &ptp_qoriq_fiper1_fops))
8419df7510SYangbo Lu 		goto err_node;
8584239b44SYueHaibing 	if (!debugfs_create_file_unsafe("fiper2-loopback", 0600, root,
861e562c81SYangbo Lu 					ptp_qoriq, &ptp_qoriq_fiper2_fops))
8719df7510SYangbo Lu 		goto err_node;
8819df7510SYangbo Lu 	return;
8919df7510SYangbo Lu 
9019df7510SYangbo Lu err_node:
9119df7510SYangbo Lu 	debugfs_remove_recursive(root);
921e562c81SYangbo Lu 	ptp_qoriq->debugfs_root = NULL;
9319df7510SYangbo Lu err_root:
941e562c81SYangbo Lu 	dev_err(ptp_qoriq->dev, "failed to initialize debugfs\n");
9519df7510SYangbo Lu }
9619df7510SYangbo Lu 
971e562c81SYangbo Lu void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq)
9819df7510SYangbo Lu {
991e562c81SYangbo Lu 	debugfs_remove_recursive(ptp_qoriq->debugfs_root);
1001e562c81SYangbo Lu 	ptp_qoriq->debugfs_root = NULL;
10119df7510SYangbo Lu }
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