97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// // Renesas R-Car debugfs support
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//
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// Copyright (c) 2021 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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//
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// > mount -t debugfs none /sys/kernel/debug
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// > cd /sys/kernel/debug/asoc/rcar-sound/ec500000.sound/rdai{N}/
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// > cat playback/xxx
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// > cat capture/xxx
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//
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#ifdef CONFIG_DEBUG_FS
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#include <linux/debugfs.h>
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#include "rsnd.h"
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static int rsnd_debugfs_show(struct seq_file *m, void *v)
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{
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struct rsnd_dai_stream *io = m->private;
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struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io);
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struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
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int i;
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/* adg is out of mods */
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rsnd_adg_clk_dbg_info(priv, m);
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for_each_rsnd_mod(i, mod, io) {
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u32 *status = mod->ops->get_status(mod, io, mod->type);
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seq_printf(m, "name: %s\n", rsnd_mod_name(mod));
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seq_printf(m, "status: %08x\n", *status);
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if (mod->ops->debug_info)
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mod->ops->debug_info(m, io, mod);
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(rsnd_debugfs);
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void rsnd_debugfs_reg_show(struct seq_file *m, phys_addr_t _addr,
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void __iomem *base, int offset, int size)
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{
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int i, j;
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for (i = 0; i < size; i += 0x10) {
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phys_addr_t addr = _addr + offset + i;
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seq_printf(m, "%pa:", &addr);
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for (j = 0; j < 0x10; j += 0x4)
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seq_printf(m, " %08x", __raw_readl(base + offset + i + j));
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seq_puts(m, "\n");
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}
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}
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void rsnd_debugfs_mod_reg_show(struct seq_file *m, struct rsnd_mod *mod,
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int reg_id, int offset, int size)
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{
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struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
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rsnd_debugfs_reg_show(m,
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rsnd_gen_get_phy_addr(priv, reg_id),
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rsnd_gen_get_base_addr(priv, reg_id),
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offset, size);
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}
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int rsnd_debugfs_probe(struct snd_soc_component *component)
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{
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struct rsnd_priv *priv = dev_get_drvdata(component->dev);
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struct rsnd_dai *rdai;
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struct dentry *dir;
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char name[64];
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int i;
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/* Gen1 is not supported */
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if (rsnd_is_gen1(priv))
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return 0;
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for_each_rsnd_dai(rdai, priv, i) {
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/*
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* created debugfs will be automatically
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* removed, nothing to do for _remove.
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* see
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* soc_cleanup_component_debugfs()
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*/
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snprintf(name, sizeof(name), "rdai%d", i);
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dir = debugfs_create_dir(name, component->debugfs_root);
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debugfs_create_file("playback", 0444, dir, &rdai->playback, &rsnd_debugfs_fops);
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debugfs_create_file("capture", 0444, dir, &rdai->capture, &rsnd_debugfs_fops);
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}
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return 0;
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}
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#endif /* CONFIG_DEBUG_FS */
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