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