Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 160 insertions, 0 deletions

diff --git a/sound/soc/fsl/fsl_ssi_dbg.c b/sound/soc/fsl/fsl_ssi_dbg.c
new file mode 100644
index 000000000..1255dfe19
--- /dev/null
+++ b/sound/soc/fsl/fsl_ssi_dbg.c
@@ -0,0 +1,160 @@
+// 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);
+}