Commit | Line | Data |
---|---|---|
0eb6048f FE |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // | |
3 | // Freescale SSI ALSA SoC Digital Audio Interface (DAI) debugging functions | |
4 | // | |
5 | // Copyright 2014 Markus Pargmann <mpa@pengutronix.de>, Pengutronix | |
6 | // | |
7 | // Split from fsl_ssi.c | |
f138e621 MP |
8 | |
9 | #include <linux/debugfs.h> | |
10 | #include <linux/device.h> | |
11 | #include <linux/kernel.h> | |
12 | ||
13 | #include "fsl_ssi.h" | |
14 | ||
15 | void fsl_ssi_dbg_isr(struct fsl_ssi_dbg *dbg, u32 sisr) | |
16 | { | |
a818aa5f | 17 | if (sisr & SSI_SISR_RFRC) |
f138e621 MP |
18 | dbg->stats.rfrc++; |
19 | ||
a818aa5f | 20 | if (sisr & SSI_SISR_TFRC) |
f138e621 MP |
21 | dbg->stats.tfrc++; |
22 | ||
a818aa5f | 23 | if (sisr & SSI_SISR_CMDAU) |
f138e621 MP |
24 | dbg->stats.cmdau++; |
25 | ||
a818aa5f | 26 | if (sisr & SSI_SISR_CMDDU) |
f138e621 MP |
27 | dbg->stats.cmddu++; |
28 | ||
a818aa5f | 29 | if (sisr & SSI_SISR_RXT) |
f138e621 MP |
30 | dbg->stats.rxt++; |
31 | ||
a818aa5f | 32 | if (sisr & SSI_SISR_RDR1) |
f138e621 MP |
33 | dbg->stats.rdr1++; |
34 | ||
a818aa5f | 35 | if (sisr & SSI_SISR_RDR0) |
f138e621 MP |
36 | dbg->stats.rdr0++; |
37 | ||
a818aa5f | 38 | if (sisr & SSI_SISR_TDE1) |
f138e621 MP |
39 | dbg->stats.tde1++; |
40 | ||
a818aa5f | 41 | if (sisr & SSI_SISR_TDE0) |
f138e621 MP |
42 | dbg->stats.tde0++; |
43 | ||
a818aa5f | 44 | if (sisr & SSI_SISR_ROE1) |
f138e621 MP |
45 | dbg->stats.roe1++; |
46 | ||
a818aa5f | 47 | if (sisr & SSI_SISR_ROE0) |
f138e621 MP |
48 | dbg->stats.roe0++; |
49 | ||
a818aa5f | 50 | if (sisr & SSI_SISR_TUE1) |
f138e621 MP |
51 | dbg->stats.tue1++; |
52 | ||
a818aa5f | 53 | if (sisr & SSI_SISR_TUE0) |
f138e621 MP |
54 | dbg->stats.tue0++; |
55 | ||
a818aa5f | 56 | if (sisr & SSI_SISR_TFS) |
f138e621 MP |
57 | dbg->stats.tfs++; |
58 | ||
a818aa5f | 59 | if (sisr & SSI_SISR_RFS) |
f138e621 MP |
60 | dbg->stats.rfs++; |
61 | ||
a818aa5f | 62 | if (sisr & SSI_SISR_TLS) |
f138e621 MP |
63 | dbg->stats.tls++; |
64 | ||
a818aa5f | 65 | if (sisr & SSI_SISR_RLS) |
f138e621 MP |
66 | dbg->stats.rls++; |
67 | ||
a818aa5f | 68 | if (sisr & SSI_SISR_RFF1) |
f138e621 MP |
69 | dbg->stats.rff1++; |
70 | ||
a818aa5f | 71 | if (sisr & SSI_SISR_RFF0) |
f138e621 MP |
72 | dbg->stats.rff0++; |
73 | ||
a818aa5f | 74 | if (sisr & SSI_SISR_TFE1) |
f138e621 MP |
75 | dbg->stats.tfe1++; |
76 | ||
a818aa5f | 77 | if (sisr & SSI_SISR_TFE0) |
f138e621 MP |
78 | dbg->stats.tfe0++; |
79 | } | |
80 | ||
7a8fceb7 NC |
81 | /** |
82 | * Show the statistics of a flag only if its interrupt is enabled | |
83 | * | |
84 | * Compilers will optimize it to a no-op if the interrupt is disabled | |
f138e621 MP |
85 | */ |
86 | #define SIER_SHOW(flag, name) \ | |
87 | do { \ | |
a818aa5f | 88 | if (SSI_SIER_##flag) \ |
f138e621 MP |
89 | seq_printf(s, #name "=%u\n", ssi_dbg->stats.name); \ |
90 | } while (0) | |
91 | ||
92 | ||
93 | /** | |
7a8fceb7 | 94 | * Display the statistics for the current SSI device |
f138e621 | 95 | * |
7a8fceb7 | 96 | * To avoid confusion, only show those counts that are enabled |
f138e621 MP |
97 | */ |
98 | static int fsl_ssi_stats_show(struct seq_file *s, void *unused) | |
99 | { | |
100 | struct fsl_ssi_dbg *ssi_dbg = s->private; | |
101 | ||
102 | SIER_SHOW(RFRC_EN, rfrc); | |
103 | SIER_SHOW(TFRC_EN, tfrc); | |
104 | SIER_SHOW(CMDAU_EN, cmdau); | |
105 | SIER_SHOW(CMDDU_EN, cmddu); | |
106 | SIER_SHOW(RXT_EN, rxt); | |
107 | SIER_SHOW(RDR1_EN, rdr1); | |
108 | SIER_SHOW(RDR0_EN, rdr0); | |
109 | SIER_SHOW(TDE1_EN, tde1); | |
110 | SIER_SHOW(TDE0_EN, tde0); | |
111 | SIER_SHOW(ROE1_EN, roe1); | |
112 | SIER_SHOW(ROE0_EN, roe0); | |
113 | SIER_SHOW(TUE1_EN, tue1); | |
114 | SIER_SHOW(TUE0_EN, tue0); | |
115 | SIER_SHOW(TFS_EN, tfs); | |
116 | SIER_SHOW(RFS_EN, rfs); | |
117 | SIER_SHOW(TLS_EN, tls); | |
118 | SIER_SHOW(RLS_EN, rls); | |
119 | SIER_SHOW(RFF1_EN, rff1); | |
120 | SIER_SHOW(RFF0_EN, rff0); | |
121 | SIER_SHOW(TFE1_EN, tfe1); | |
122 | SIER_SHOW(TFE0_EN, tfe0); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | static int fsl_ssi_stats_open(struct inode *inode, struct file *file) | |
128 | { | |
129 | return single_open(file, fsl_ssi_stats_show, inode->i_private); | |
130 | } | |
131 | ||
132 | static const struct file_operations fsl_ssi_stats_ops = { | |
133 | .open = fsl_ssi_stats_open, | |
134 | .read = seq_read, | |
135 | .llseek = seq_lseek, | |
136 | .release = single_release, | |
137 | }; | |
138 | ||
139 | int fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg, struct device *dev) | |
140 | { | |
141 | ssi_dbg->dbg_dir = debugfs_create_dir(dev_name(dev), NULL); | |
142 | if (!ssi_dbg->dbg_dir) | |
143 | return -ENOMEM; | |
144 | ||
6a73cf46 | 145 | ssi_dbg->dbg_stats = debugfs_create_file("stats", 0444, |
af4f7f38 NC |
146 | ssi_dbg->dbg_dir, ssi_dbg, |
147 | &fsl_ssi_stats_ops); | |
f138e621 MP |
148 | if (!ssi_dbg->dbg_stats) { |
149 | debugfs_remove(ssi_dbg->dbg_dir); | |
150 | return -ENOMEM; | |
151 | } | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | void fsl_ssi_debugfs_remove(struct fsl_ssi_dbg *ssi_dbg) | |
157 | { | |
158 | debugfs_remove(ssi_dbg->dbg_stats); | |
159 | debugfs_remove(ssi_dbg->dbg_dir); | |
160 | } |