root/sound/pci/lola/lola_proc.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Support for Digigram Lola PCI-e boards
 *
 *  Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/pcm.h>
#include "lola.h"

static void print_audio_widget(struct snd_info_buffer *buffer,
                               struct lola *chip, int nid, const char *name)
{
        unsigned int val;

        lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val);
        snd_iprintf(buffer, "Node 0x%02x %s wcaps 0x%x\n", nid, name, val);
        lola_read_param(chip, nid, LOLA_PAR_STREAM_FORMATS, &val);
        snd_iprintf(buffer, "  Formats: 0x%x\n", val);
}

static void print_pin_widget(struct snd_info_buffer *buffer,
                             struct lola *chip, int nid, unsigned int ampcap,
                             const char *name)
{
        unsigned int val;

        lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val);
        snd_iprintf(buffer, "Node 0x%02x %s wcaps 0x%x\n", nid, name, val);
        if (val == 0x00400200)
                return;
        lola_read_param(chip, nid, ampcap, &val);
        snd_iprintf(buffer, "  Amp-Caps: 0x%x\n", val);
        snd_iprintf(buffer, "    mute=%d, step-size=%d, steps=%d, ofs=%d\n",
                    LOLA_AMP_MUTE_CAPABLE(val),
                    LOLA_AMP_STEP_SIZE(val),
                    LOLA_AMP_NUM_STEPS(val),
                    LOLA_AMP_OFFSET(val));
        lola_codec_read(chip, nid, LOLA_VERB_GET_MAX_LEVEL, 0, 0, &val, NULL);
        snd_iprintf(buffer, "  Max-level: 0x%x\n", val);
}

static void print_clock_widget(struct snd_info_buffer *buffer,
                               struct lola *chip, int nid)
{
        int i, j, num_clocks;
        unsigned int val;

        lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val);
        snd_iprintf(buffer, "Node 0x%02x [Clock] wcaps 0x%x\n", nid, val);
        num_clocks = val & 0xff;
        for (i = 0; i < num_clocks; i += 4) {
                unsigned int res_ex;
                unsigned short items[4];
                const char *name;

                lola_codec_read(chip, nid, LOLA_VERB_GET_CLOCK_LIST,
                                i, 0, &val, &res_ex);
                items[0] = val & 0xfff;
                items[1] = (val >> 16) & 0xfff;
                items[2] = res_ex & 0xfff;
                items[3] = (res_ex >> 16) & 0xfff;
                for (j = 0; j < 4; j++) {
                        unsigned char type = items[j] >> 8;
                        unsigned int freq = items[j] & 0xff;
                        if (i + j >= num_clocks)
                                break;
                        if (type == LOLA_CLOCK_TYPE_INTERNAL) {
                                name = "Internal";
                                freq = lola_sample_rate_convert(freq);
                        } else if (type == LOLA_CLOCK_TYPE_VIDEO) {
                                name = "Video";
                                freq = lola_sample_rate_convert(freq);
                        } else {
                                name = "Other";
                        }
                        snd_iprintf(buffer, "  Clock %d: Type %d:%s, freq=%d\n",
                                    i + j, type, name, freq);
                }
        }
}

static void print_mixer_widget(struct snd_info_buffer *buffer,
                               struct lola *chip, int nid)
{
        unsigned int val;

        lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val);
        snd_iprintf(buffer, "Node 0x%02x [Mixer] wcaps 0x%x\n", nid, val);
}

static void lola_proc_codec_read(struct snd_info_entry *entry,
                                 struct snd_info_buffer *buffer)
{
        struct lola *chip = entry->private_data;
        unsigned int val;
        int i, nid;

        lola_read_param(chip, 0, LOLA_PAR_VENDOR_ID, &val);
        snd_iprintf(buffer, "Vendor: 0x%08x\n", val);
        lola_read_param(chip, 1, LOLA_PAR_FUNCTION_TYPE, &val);
        snd_iprintf(buffer, "Function Type: %d\n", val);
        lola_read_param(chip, 1, LOLA_PAR_SPECIFIC_CAPS, &val);
        snd_iprintf(buffer, "Specific-Caps: 0x%08x\n", val);
        snd_iprintf(buffer, "  Pins-In %d, Pins-Out %d\n",
                    chip->pin[CAPT].num_pins, chip->pin[PLAY].num_pins);
        nid = 2;
        for (i = 0; i < chip->pcm[CAPT].num_streams; i++, nid++)
                print_audio_widget(buffer, chip, nid, "[Audio-In]");
        for (i = 0; i < chip->pcm[PLAY].num_streams; i++, nid++)
                print_audio_widget(buffer, chip, nid, "[Audio-Out]");
        for (i = 0; i < chip->pin[CAPT].num_pins; i++, nid++)
                print_pin_widget(buffer, chip, nid, LOLA_PAR_AMP_IN_CAP,
                                 "[Pin-In]");
        for (i = 0; i < chip->pin[PLAY].num_pins; i++, nid++)
                print_pin_widget(buffer, chip, nid, LOLA_PAR_AMP_OUT_CAP,
                                 "[Pin-Out]");
        if (LOLA_AFG_CLOCK_WIDGET_PRESENT(chip->lola_caps)) {
                print_clock_widget(buffer, chip, nid);
                nid++;
        }
        if (LOLA_AFG_MIXER_WIDGET_PRESENT(chip->lola_caps)) {
                print_mixer_widget(buffer, chip, nid);
                nid++;
        }
}

/* direct codec access for debugging */
static void lola_proc_codec_rw_write(struct snd_info_entry *entry,
                                     struct snd_info_buffer *buffer)
{
        struct lola *chip = entry->private_data;
        char line[64];
        unsigned int id, verb, data, extdata;
        while (!snd_info_get_line(buffer, line, sizeof(line))) {
                if (sscanf(line, "%u %u %u %u", &id, &verb, &data, &extdata) != 4)
                        continue;
                lola_codec_read(chip, id, verb, data, extdata,
                                &chip->debug_res,
                                &chip->debug_res_ex);
        }
}

static void lola_proc_codec_rw_read(struct snd_info_entry *entry,
                                    struct snd_info_buffer *buffer)
{
        struct lola *chip = entry->private_data;
        snd_iprintf(buffer, "0x%x 0x%x\n", chip->debug_res, chip->debug_res_ex);
}

/*
 * dump some registers
 */
static void lola_proc_regs_read(struct snd_info_entry *entry,
                                struct snd_info_buffer *buffer)
{
        struct lola *chip = entry->private_data;
        int i;

        for (i = 0; i < 0x40; i += 4) {
                snd_iprintf(buffer, "BAR0 %02x: %08x\n", i,
                            readl(chip->bar[BAR0].remap_addr + i));
        }
        snd_iprintf(buffer, "\n");
        for (i = 0; i < 0x30; i += 4) {
                snd_iprintf(buffer, "BAR1 %02x: %08x\n", i,
                            readl(chip->bar[BAR1].remap_addr + i));
        }
        snd_iprintf(buffer, "\n");
        for (i = 0x80; i < 0xa0; i += 4) {
                snd_iprintf(buffer, "BAR1 %02x: %08x\n", i,
                            readl(chip->bar[BAR1].remap_addr + i));
        }
        snd_iprintf(buffer, "\n");
        for (i = 0; i < 32; i++) {
                snd_iprintf(buffer, "DSD %02x STS  %08x\n", i,
                            lola_dsd_read(chip, i, STS));
                snd_iprintf(buffer, "DSD %02x LPIB %08x\n", i,
                            lola_dsd_read(chip, i, LPIB));
                snd_iprintf(buffer, "DSD %02x CTL  %08x\n", i,
                            lola_dsd_read(chip, i, CTL));
                snd_iprintf(buffer, "DSD %02x LVIL %08x\n", i,
                            lola_dsd_read(chip, i, LVI));
                snd_iprintf(buffer, "DSD %02x BDPL %08x\n", i,
                            lola_dsd_read(chip, i, BDPL));
                snd_iprintf(buffer, "DSD %02x BDPU %08x\n", i,
                            lola_dsd_read(chip, i, BDPU));
        }
}

void lola_proc_debug_new(struct lola *chip)
{
        snd_card_ro_proc_new(chip->card, "codec", chip, lola_proc_codec_read);
        snd_card_rw_proc_new(chip->card, "codec_rw", chip,
                             lola_proc_codec_rw_read,
                             lola_proc_codec_rw_write);
        snd_card_ro_proc_new(chip->card, "regs", chip, lola_proc_regs_read);
}