--- Begin Message ---
- To: <broonie@xxxxxxxxxx>
- Subject: [PATCH v2] firmware: cs_dsp: Add a debugfs entry containing control details
- From: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 28 Mar 2023 14:10:18 +0100
- Cc: patches@xxxxxxxxxxxxxxxxxxxxx, alsa-devel@xxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Simon Trimmer <simont@xxxxxxxxxxxxxxxxxxxxx>, Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
From: Simon Trimmer <simont@xxxxxxxxxxxxxxxxxxxxx>
The file named 'controls' in the DSP's debugfs root contains a
formatted table describing the controls defined within the loaded DSP
firmware, it is of the form
name: len region:offset addr fwname algid ctltype flags en dirty
Where flags is represented as a character for each flag if set, or '-',
enabled is whether the control is enabled or disabled and dirty is
whether the control value is set in the cache but not the hardware.
Signed-off-by: Simon Trimmer <simont@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/firmware/cirrus/cs_dsp.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c
index 513136a924cf..e4ccfb6a8fa5 100644
--- a/drivers/firmware/cirrus/cs_dsp.c
+++ b/drivers/firmware/cirrus/cs_dsp.c
@@ -14,6 +14,7 @@
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
+#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
@@ -457,6 +458,33 @@ static const struct {
},
};
+static int cs_dsp_coeff_base_reg(struct cs_dsp_coeff_ctl *ctl, unsigned int *reg,
+ unsigned int off);
+
+static int cs_dsp_debugfs_read_controls_show(struct seq_file *s, void *ignored)
+{
+ struct cs_dsp *dsp = s->private;
+ struct cs_dsp_coeff_ctl *ctl;
+ unsigned int reg;
+
+ list_for_each_entry(ctl, &dsp->ctl_list, list) {
+ cs_dsp_coeff_base_reg(ctl, ®, 0);
+ seq_printf(s, "%22.*s: %#8zx %s:%08x %#8x %s %#8x %#4x %c%c%c%c %s %s\n",
+ ctl->subname_len, ctl->subname, ctl->len,
+ cs_dsp_mem_region_name(ctl->alg_region.type),
+ ctl->offset, reg, ctl->fw_name, ctl->alg_region.alg, ctl->type,
+ ctl->flags & WMFW_CTL_FLAG_VOLATILE ? 'V' : '-',
+ ctl->flags & WMFW_CTL_FLAG_SYS ? 'S' : '-',
+ ctl->flags & WMFW_CTL_FLAG_READABLE ? 'R' : '-',
+ ctl->flags & WMFW_CTL_FLAG_WRITEABLE ? 'W' : '-',
+ ctl->enabled ? "enabled" : "disabled",
+ ctl->set ? "dirty" : "clean");
+ }
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(cs_dsp_debugfs_read_controls);
+
/**
* cs_dsp_init_debugfs() - Create and populate DSP representation in debugfs
* @dsp: pointer to DSP structure
@@ -479,6 +507,9 @@ void cs_dsp_init_debugfs(struct cs_dsp *dsp, struct dentry *debugfs_root)
debugfs_create_file(cs_dsp_debugfs_fops[i].name, 0444, root,
dsp, &cs_dsp_debugfs_fops[i].fops);
+ debugfs_create_file("controls", 0444, root, dsp,
+ &cs_dsp_debugfs_read_controls_fops);
+
dsp->debugfs_root = root;
}
EXPORT_SYMBOL_NS_GPL(cs_dsp_init_debugfs, FW_CS_DSP);
--
2.30.2
--- End Message ---