From: Simon Trimmer simont@opensource.cirrus.com

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@opensource.cirrus.com Signed-off-by: Richard Fitzgerald rf@opensource.cirrus.com --- 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, &reg, 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);