projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| f138e621 MP |
1 | /* |
| 2 | * Freescale SSI ALSA SoC Digital Audio Interface (DAI) debugging functions | |
| 3 | * | |
| 4 | * Copyright 2014 Markus Pargmann <mpa@pengutronix.de>, Pengutronix | |
| 5 | * | |
| 6 | * Splitted from fsl_ssi.c | |
| 7 | * | |
| 8 | * This file is licensed under the terms of the GNU General Public License | |
| 9 | * version 2. This program is licensed "as is" without any warranty of any | |
| 10 | * kind, whether express or implied. | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/debugfs.h> | |
| 14 | #include <linux/device.h> | |
| 15 | #include <linux/kernel.h> | |
| 16 | ||
| 17 | #include "fsl_ssi.h" | |
| 18 | ||
| 19 | void fsl_ssi_dbg_isr(struct fsl_ssi_dbg *dbg, u32 sisr) | |
| 20 | { | |
| 21 | if (sisr & CCSR_SSI_SISR_RFRC) | |
| 22 | dbg->stats.rfrc++; | |
| 23 | ||
| 24 | if (sisr & CCSR_SSI_SISR_TFRC) | |
| 25 | dbg->stats.tfrc++; | |
| 26 | ||
| 27 | if (sisr & CCSR_SSI_SISR_CMDAU) | |
| 28 | dbg->stats.cmdau++; | |
| 29 | ||
| 30 | if (sisr & CCSR_SSI_SISR_CMDDU) | |
| 31 | dbg->stats.cmddu++; | |
| 32 | ||
| 33 | if (sisr & CCSR_SSI_SISR_RXT) | |
| 34 | dbg->stats.rxt++; | |
| 35 | ||
| 36 | if (sisr & CCSR_SSI_SISR_RDR1) | |
| 37 | dbg->stats.rdr1++; | |
| 38 | ||
| 39 | if (sisr & CCSR_SSI_SISR_RDR0) | |
| 40 | dbg->stats.rdr0++; | |
| 41 | ||
| 42 | if (sisr & CCSR_SSI_SISR_TDE1) | |
| 43 | dbg->stats.tde1++; | |
| 44 | ||
| 45 | if (sisr & CCSR_SSI_SISR_TDE0) | |
| 46 | dbg->stats.tde0++; | |
| 47 | ||
| 48 | if (sisr & CCSR_SSI_SISR_ROE1) | |
| 49 | dbg->stats.roe1++; | |
| 50 | ||
| 51 | if (sisr & CCSR_SSI_SISR_ROE0) | |
| 52 | dbg->stats.roe0++; | |
| 53 | ||
| 54 | if (sisr & CCSR_SSI_SISR_TUE1) | |
| 55 | dbg->stats.tue1++; | |
| 56 | ||
| 57 | if (sisr & CCSR_SSI_SISR_TUE0) | |
| 58 | dbg->stats.tue0++; | |
| 59 | ||
| 60 | if (sisr & CCSR_SSI_SISR_TFS) | |
| 61 | dbg->stats.tfs++; | |
| 62 | ||
| 63 | if (sisr & CCSR_SSI_SISR_RFS) | |
| 64 | dbg->stats.rfs++; | |
| 65 | ||
| 66 | if (sisr & CCSR_SSI_SISR_TLS) | |
| 67 | dbg->stats.tls++; | |
| 68 | ||
| 69 | if (sisr & CCSR_SSI_SISR_RLS) | |
| 70 | dbg->stats.rls++; | |
| 71 | ||
| 72 | if (sisr & CCSR_SSI_SISR_RFF1) | |
| 73 | dbg->stats.rff1++; | |
| 74 | ||
| 75 | if (sisr & CCSR_SSI_SISR_RFF0) | |
| 76 | dbg->stats.rff0++; | |
| 77 | ||
| 78 | if (sisr & CCSR_SSI_SISR_TFE1) | |
| 79 | dbg->stats.tfe1++; | |
| 80 | ||
| 81 | if (sisr & CCSR_SSI_SISR_TFE0) | |
| 82 | dbg->stats.tfe0++; | |
| 83 | } | |
| 84 | ||
| 85 | /* Show the statistics of a flag only if its interrupt is enabled. The | |
| 86 | * compiler will optimze this code to a no-op if the interrupt is not | |
| 87 | * enabled. | |
| 88 | */ | |
| 89 | #define SIER_SHOW(flag, name) \ | |
| 90 | do { \ | |
| 91 | if (CCSR_SSI_SIER_##flag) \ | |
| 92 | seq_printf(s, #name "=%u\n", ssi_dbg->stats.name); \ | |
| 93 | } while (0) | |
| 94 | ||
| 95 | ||
| 96 | /** | |
| 97 | * fsl_sysfs_ssi_show: display SSI statistics | |
| 98 | * | |
| 99 | * Display the statistics for the current SSI device. To avoid confusion, | |
| 100 | * we only show those counts that are enabled. | |
| 101 | */ | |
| 102 | static int fsl_ssi_stats_show(struct seq_file *s, void *unused) | |
| 103 | { | |
| 104 | struct fsl_ssi_dbg *ssi_dbg = s->private; | |
| 105 | ||
| 106 | SIER_SHOW(RFRC_EN, rfrc); | |
| 107 | SIER_SHOW(TFRC_EN, tfrc); | |
| 108 | SIER_SHOW(CMDAU_EN, cmdau); | |
| 109 | SIER_SHOW(CMDDU_EN, cmddu); | |
| 110 | SIER_SHOW(RXT_EN, rxt); | |
| 111 | SIER_SHOW(RDR1_EN, rdr1); | |
| 112 | SIER_SHOW(RDR0_EN, rdr0); | |
| 113 | SIER_SHOW(TDE1_EN, tde1); | |
| 114 | SIER_SHOW(TDE0_EN, tde0); | |
| 115 | SIER_SHOW(ROE1_EN, roe1); | |
| 116 | SIER_SHOW(ROE0_EN, roe0); | |
| 117 | SIER_SHOW(TUE1_EN, tue1); | |
| 118 | SIER_SHOW(TUE0_EN, tue0); | |
| 119 | SIER_SHOW(TFS_EN, tfs); | |
| 120 | SIER_SHOW(RFS_EN, rfs); | |
| 121 | SIER_SHOW(TLS_EN, tls); | |
| 122 | SIER_SHOW(RLS_EN, rls); | |
| 123 | SIER_SHOW(RFF1_EN, rff1); | |
| 124 | SIER_SHOW(RFF0_EN, rff0); | |
| 125 | SIER_SHOW(TFE1_EN, tfe1); | |
| 126 | SIER_SHOW(TFE0_EN, tfe0); | |
| 127 | ||
| 128 | return 0; | |
| 129 | } | |
| 130 | ||
| 131 | static int fsl_ssi_stats_open(struct inode *inode, struct file *file) | |
| 132 | { | |
| 133 | return single_open(file, fsl_ssi_stats_show, inode->i_private); | |
| 134 | } | |
| 135 | ||
| 136 | static const struct file_operations fsl_ssi_stats_ops = { | |
| 137 | .open = fsl_ssi_stats_open, | |
| 138 | .read = seq_read, | |
| 139 | .llseek = seq_lseek, | |
| 140 | .release = single_release, | |
| 141 | }; | |
| 142 | ||
| 143 | int fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg, struct device *dev) | |
| 144 | { | |
| 145 | ssi_dbg->dbg_dir = debugfs_create_dir(dev_name(dev), NULL); | |
| 146 | if (!ssi_dbg->dbg_dir) | |
| 147 | return -ENOMEM; | |
| 148 | ||
| 149 | ssi_dbg->dbg_stats = debugfs_create_file("stats", S_IRUGO, | |
| 150 | ssi_dbg->dbg_dir, ssi_dbg, &fsl_ssi_stats_ops); | |
| 151 | if (!ssi_dbg->dbg_stats) { | |
| 152 | debugfs_remove(ssi_dbg->dbg_dir); | |
| 153 | return -ENOMEM; | |
| 154 | } | |
| 155 | ||
| 156 | return 0; | |
| 157 | } | |
| 158 | ||
| 159 | void fsl_ssi_debugfs_remove(struct fsl_ssi_dbg *ssi_dbg) | |
| 160 | { | |
| 161 | debugfs_remove(ssi_dbg->dbg_stats); | |
| 162 | debugfs_remove(ssi_dbg->dbg_dir); | |
| 163 | } |