1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+
2*4882a593Smuzhiyun /* Copyright 2019 NXP
3*4882a593Smuzhiyun */
4*4882a593Smuzhiyun #include <linux/device.h>
5*4882a593Smuzhiyun #include <linux/debugfs.h>
6*4882a593Smuzhiyun #include <linux/fsl/ptp_qoriq.h>
7*4882a593Smuzhiyun
ptp_qoriq_fiper1_lpbk_get(void * data,u64 * val)8*4882a593Smuzhiyun static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val)
9*4882a593Smuzhiyun {
10*4882a593Smuzhiyun struct ptp_qoriq *ptp_qoriq = data;
11*4882a593Smuzhiyun struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
12*4882a593Smuzhiyun u32 ctrl;
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
15*4882a593Smuzhiyun *val = ctrl & PP1L ? 1 : 0;
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun return 0;
18*4882a593Smuzhiyun }
19*4882a593Smuzhiyun
ptp_qoriq_fiper1_lpbk_set(void * data,u64 val)20*4882a593Smuzhiyun static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun struct ptp_qoriq *ptp_qoriq = data;
23*4882a593Smuzhiyun struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
24*4882a593Smuzhiyun u32 ctrl;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
27*4882a593Smuzhiyun if (val == 0)
28*4882a593Smuzhiyun ctrl &= ~PP1L;
29*4882a593Smuzhiyun else
30*4882a593Smuzhiyun ctrl |= PP1L;
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun ptp_qoriq->write(®s->ctrl_regs->tmr_ctrl, ctrl);
33*4882a593Smuzhiyun return 0;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper1_fops, ptp_qoriq_fiper1_lpbk_get,
37*4882a593Smuzhiyun ptp_qoriq_fiper1_lpbk_set, "%llu\n");
38*4882a593Smuzhiyun
ptp_qoriq_fiper2_lpbk_get(void * data,u64 * val)39*4882a593Smuzhiyun static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun struct ptp_qoriq *ptp_qoriq = data;
42*4882a593Smuzhiyun struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
43*4882a593Smuzhiyun u32 ctrl;
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
46*4882a593Smuzhiyun *val = ctrl & PP2L ? 1 : 0;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun return 0;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
ptp_qoriq_fiper2_lpbk_set(void * data,u64 val)51*4882a593Smuzhiyun static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun struct ptp_qoriq *ptp_qoriq = data;
54*4882a593Smuzhiyun struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
55*4882a593Smuzhiyun u32 ctrl;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
58*4882a593Smuzhiyun if (val == 0)
59*4882a593Smuzhiyun ctrl &= ~PP2L;
60*4882a593Smuzhiyun else
61*4882a593Smuzhiyun ctrl |= PP2L;
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun ptp_qoriq->write(®s->ctrl_regs->tmr_ctrl, ctrl);
64*4882a593Smuzhiyun return 0;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper2_fops, ptp_qoriq_fiper2_lpbk_get,
68*4882a593Smuzhiyun ptp_qoriq_fiper2_lpbk_set, "%llu\n");
69*4882a593Smuzhiyun
ptp_qoriq_create_debugfs(struct ptp_qoriq * ptp_qoriq)70*4882a593Smuzhiyun void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun struct dentry *root;
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun root = debugfs_create_dir(dev_name(ptp_qoriq->dev), NULL);
75*4882a593Smuzhiyun if (IS_ERR(root))
76*4882a593Smuzhiyun return;
77*4882a593Smuzhiyun if (!root)
78*4882a593Smuzhiyun goto err_root;
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun ptp_qoriq->debugfs_root = root;
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root,
83*4882a593Smuzhiyun ptp_qoriq, &ptp_qoriq_fiper1_fops))
84*4882a593Smuzhiyun goto err_node;
85*4882a593Smuzhiyun if (!debugfs_create_file_unsafe("fiper2-loopback", 0600, root,
86*4882a593Smuzhiyun ptp_qoriq, &ptp_qoriq_fiper2_fops))
87*4882a593Smuzhiyun goto err_node;
88*4882a593Smuzhiyun return;
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun err_node:
91*4882a593Smuzhiyun debugfs_remove_recursive(root);
92*4882a593Smuzhiyun ptp_qoriq->debugfs_root = NULL;
93*4882a593Smuzhiyun err_root:
94*4882a593Smuzhiyun dev_err(ptp_qoriq->dev, "failed to initialize debugfs\n");
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun
ptp_qoriq_remove_debugfs(struct ptp_qoriq * ptp_qoriq)97*4882a593Smuzhiyun void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq)
98*4882a593Smuzhiyun {
99*4882a593Smuzhiyun debugfs_remove_recursive(ptp_qoriq->debugfs_root);
100*4882a593Smuzhiyun ptp_qoriq->debugfs_root = NULL;
101*4882a593Smuzhiyun }
102