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1// SPDX-License-Identifier: GPL-2.02//3// // Renesas R-Car debugfs support4//5// Copyright (c) 2021 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>6//7// > mount -t debugfs none /sys/kernel/debug8// > cd /sys/kernel/debug/asoc/rcar-sound/ec500000.sound/rdai{N}/9// > cat playback/xxx10// > cat capture/xxx11//12#ifdef CONFIG_DEBUG_FS13 14#include <linux/debugfs.h>15#include "rsnd.h"16 17static int rsnd_debugfs_show(struct seq_file *m, void *v)18{19 struct rsnd_dai_stream *io = m->private;20 struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io);21 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);22 int i;23 24 /* adg is out of mods */25 rsnd_adg_clk_dbg_info(priv, m);26 27 for_each_rsnd_mod(i, mod, io) {28 u32 *status = mod->ops->get_status(mod, io, mod->type);29 30 seq_printf(m, "name: %s\n", rsnd_mod_name(mod));31 seq_printf(m, "status: %08x\n", *status);32 33 if (mod->ops->debug_info)34 mod->ops->debug_info(m, io, mod);35 }36 37 return 0;38}39DEFINE_SHOW_ATTRIBUTE(rsnd_debugfs);40 41void rsnd_debugfs_reg_show(struct seq_file *m, phys_addr_t _addr,42 void __iomem *base, int offset, int size)43{44 int i, j;45 46 for (i = 0; i < size; i += 0x10) {47 phys_addr_t addr = _addr + offset + i;48 49 seq_printf(m, "%pa:", &addr);50 for (j = 0; j < 0x10; j += 0x4)51 seq_printf(m, " %08x", __raw_readl(base + offset + i + j));52 seq_puts(m, "\n");53 }54}55 56void rsnd_debugfs_mod_reg_show(struct seq_file *m, struct rsnd_mod *mod,57 int reg_id, int offset, int size)58{59 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);60 61 rsnd_debugfs_reg_show(m,62 rsnd_gen_get_phy_addr(priv, reg_id),63 rsnd_gen_get_base_addr(priv, reg_id),64 offset, size);65}66 67int rsnd_debugfs_probe(struct snd_soc_component *component)68{69 struct rsnd_priv *priv = dev_get_drvdata(component->dev);70 struct rsnd_dai *rdai;71 struct dentry *dir;72 char name[64];73 int i;74 75 /* Gen1 is not supported */76 if (rsnd_is_gen1(priv))77 return 0;78 79 for_each_rsnd_dai(rdai, priv, i) {80 /*81 * created debugfs will be automatically82 * removed, nothing to do for _remove.83 * see84 * soc_cleanup_component_debugfs()85 */86 snprintf(name, sizeof(name), "rdai%d", i);87 dir = debugfs_create_dir(name, component->debugfs_root);88 89 debugfs_create_file("playback", 0444, dir, &rdai->playback, &rsnd_debugfs_fops);90 debugfs_create_file("capture", 0444, dir, &rdai->capture, &rsnd_debugfs_fops);91 }92 93 return 0;94}95 96#endif /* CONFIG_DEBUG_FS */97