| // 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; |
| } |
| |
| DEFINE_SHOW_ATTRIBUTE(fsl_ssi_stats); |
| |
| void fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg, struct device *dev) |
| { |
| ssi_dbg->dbg_dir = debugfs_create_dir(dev_name(dev), NULL); |
| |
| debugfs_create_file("stats", 0444, ssi_dbg->dbg_dir, ssi_dbg, |
| &fsl_ssi_stats_fops); |
| } |
| |
| void fsl_ssi_debugfs_remove(struct fsl_ssi_dbg *ssi_dbg) |
| { |
| debugfs_remove_recursive(ssi_dbg->dbg_dir); |
| } |