1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun //
3*4882a593Smuzhiyun // Freescale SSI ALSA SoC Digital Audio Interface (DAI) debugging functions
4*4882a593Smuzhiyun //
5*4882a593Smuzhiyun // Copyright 2014 Markus Pargmann <mpa@pengutronix.de>, Pengutronix
6*4882a593Smuzhiyun //
7*4882a593Smuzhiyun // Split from fsl_ssi.c
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/debugfs.h>
10*4882a593Smuzhiyun #include <linux/device.h>
11*4882a593Smuzhiyun #include <linux/kernel.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include "fsl_ssi.h"
14*4882a593Smuzhiyun
fsl_ssi_dbg_isr(struct fsl_ssi_dbg * dbg,u32 sisr)15*4882a593Smuzhiyun void fsl_ssi_dbg_isr(struct fsl_ssi_dbg *dbg, u32 sisr)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun if (sisr & SSI_SISR_RFRC)
18*4882a593Smuzhiyun dbg->stats.rfrc++;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun if (sisr & SSI_SISR_TFRC)
21*4882a593Smuzhiyun dbg->stats.tfrc++;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun if (sisr & SSI_SISR_CMDAU)
24*4882a593Smuzhiyun dbg->stats.cmdau++;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun if (sisr & SSI_SISR_CMDDU)
27*4882a593Smuzhiyun dbg->stats.cmddu++;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun if (sisr & SSI_SISR_RXT)
30*4882a593Smuzhiyun dbg->stats.rxt++;
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun if (sisr & SSI_SISR_RDR1)
33*4882a593Smuzhiyun dbg->stats.rdr1++;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun if (sisr & SSI_SISR_RDR0)
36*4882a593Smuzhiyun dbg->stats.rdr0++;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun if (sisr & SSI_SISR_TDE1)
39*4882a593Smuzhiyun dbg->stats.tde1++;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun if (sisr & SSI_SISR_TDE0)
42*4882a593Smuzhiyun dbg->stats.tde0++;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun if (sisr & SSI_SISR_ROE1)
45*4882a593Smuzhiyun dbg->stats.roe1++;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun if (sisr & SSI_SISR_ROE0)
48*4882a593Smuzhiyun dbg->stats.roe0++;
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun if (sisr & SSI_SISR_TUE1)
51*4882a593Smuzhiyun dbg->stats.tue1++;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun if (sisr & SSI_SISR_TUE0)
54*4882a593Smuzhiyun dbg->stats.tue0++;
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun if (sisr & SSI_SISR_TFS)
57*4882a593Smuzhiyun dbg->stats.tfs++;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun if (sisr & SSI_SISR_RFS)
60*4882a593Smuzhiyun dbg->stats.rfs++;
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun if (sisr & SSI_SISR_TLS)
63*4882a593Smuzhiyun dbg->stats.tls++;
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun if (sisr & SSI_SISR_RLS)
66*4882a593Smuzhiyun dbg->stats.rls++;
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun if (sisr & SSI_SISR_RFF1)
69*4882a593Smuzhiyun dbg->stats.rff1++;
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun if (sisr & SSI_SISR_RFF0)
72*4882a593Smuzhiyun dbg->stats.rff0++;
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun if (sisr & SSI_SISR_TFE1)
75*4882a593Smuzhiyun dbg->stats.tfe1++;
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun if (sisr & SSI_SISR_TFE0)
78*4882a593Smuzhiyun dbg->stats.tfe0++;
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun /*
82*4882a593Smuzhiyun * Show the statistics of a flag only if its interrupt is enabled
83*4882a593Smuzhiyun *
84*4882a593Smuzhiyun * Compilers will optimize it to a no-op if the interrupt is disabled
85*4882a593Smuzhiyun */
86*4882a593Smuzhiyun #define SIER_SHOW(flag, name) \
87*4882a593Smuzhiyun do { \
88*4882a593Smuzhiyun if (SSI_SIER_##flag) \
89*4882a593Smuzhiyun seq_printf(s, #name "=%u\n", ssi_dbg->stats.name); \
90*4882a593Smuzhiyun } while (0)
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun /*
94*4882a593Smuzhiyun * Display the statistics for the current SSI device
95*4882a593Smuzhiyun *
96*4882a593Smuzhiyun * To avoid confusion, only show those counts that are enabled
97*4882a593Smuzhiyun */
fsl_ssi_stats_show(struct seq_file * s,void * unused)98*4882a593Smuzhiyun static int fsl_ssi_stats_show(struct seq_file *s, void *unused)
99*4882a593Smuzhiyun {
100*4882a593Smuzhiyun struct fsl_ssi_dbg *ssi_dbg = s->private;
101*4882a593Smuzhiyun
102*4882a593Smuzhiyun SIER_SHOW(RFRC_EN, rfrc);
103*4882a593Smuzhiyun SIER_SHOW(TFRC_EN, tfrc);
104*4882a593Smuzhiyun SIER_SHOW(CMDAU_EN, cmdau);
105*4882a593Smuzhiyun SIER_SHOW(CMDDU_EN, cmddu);
106*4882a593Smuzhiyun SIER_SHOW(RXT_EN, rxt);
107*4882a593Smuzhiyun SIER_SHOW(RDR1_EN, rdr1);
108*4882a593Smuzhiyun SIER_SHOW(RDR0_EN, rdr0);
109*4882a593Smuzhiyun SIER_SHOW(TDE1_EN, tde1);
110*4882a593Smuzhiyun SIER_SHOW(TDE0_EN, tde0);
111*4882a593Smuzhiyun SIER_SHOW(ROE1_EN, roe1);
112*4882a593Smuzhiyun SIER_SHOW(ROE0_EN, roe0);
113*4882a593Smuzhiyun SIER_SHOW(TUE1_EN, tue1);
114*4882a593Smuzhiyun SIER_SHOW(TUE0_EN, tue0);
115*4882a593Smuzhiyun SIER_SHOW(TFS_EN, tfs);
116*4882a593Smuzhiyun SIER_SHOW(RFS_EN, rfs);
117*4882a593Smuzhiyun SIER_SHOW(TLS_EN, tls);
118*4882a593Smuzhiyun SIER_SHOW(RLS_EN, rls);
119*4882a593Smuzhiyun SIER_SHOW(RFF1_EN, rff1);
120*4882a593Smuzhiyun SIER_SHOW(RFF0_EN, rff0);
121*4882a593Smuzhiyun SIER_SHOW(TFE1_EN, tfe1);
122*4882a593Smuzhiyun SIER_SHOW(TFE0_EN, tfe0);
123*4882a593Smuzhiyun
124*4882a593Smuzhiyun return 0;
125*4882a593Smuzhiyun }
126*4882a593Smuzhiyun
127*4882a593Smuzhiyun DEFINE_SHOW_ATTRIBUTE(fsl_ssi_stats);
128*4882a593Smuzhiyun
fsl_ssi_debugfs_create(struct fsl_ssi_dbg * ssi_dbg,struct device * dev)129*4882a593Smuzhiyun void fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg, struct device *dev)
130*4882a593Smuzhiyun {
131*4882a593Smuzhiyun ssi_dbg->dbg_dir = debugfs_create_dir(dev_name(dev), NULL);
132*4882a593Smuzhiyun
133*4882a593Smuzhiyun debugfs_create_file("stats", 0444, ssi_dbg->dbg_dir, ssi_dbg,
134*4882a593Smuzhiyun &fsl_ssi_stats_fops);
135*4882a593Smuzhiyun }
136*4882a593Smuzhiyun
fsl_ssi_debugfs_remove(struct fsl_ssi_dbg * ssi_dbg)137*4882a593Smuzhiyun void fsl_ssi_debugfs_remove(struct fsl_ssi_dbg *ssi_dbg)
138*4882a593Smuzhiyun {
139*4882a593Smuzhiyun debugfs_remove_recursive(ssi_dbg->dbg_dir);
140*4882a593Smuzhiyun }
141