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- // SPDX-License-Identifier: GPL-2.0
- //
- // Freescale SSI ALSA SoC Digital Audio Interface (DAI) debugging functions
- //
- // Copyright 2014 Markus Pargmann <[email protected]>, 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);
- }
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