/*
 *  Support for Digigram Lola PCI-e boards
 *
 *  Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
 *
 *  This program is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the Free
 *  Software Foundation; either version 2 of the License, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful, but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 *  more details.
 *
 *  You should have received a copy of the GNU General Public License along with
 *  this program; if not, write to the Free Software Foundation, Inc., 59
 *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#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)
{
	struct snd_info_entry *entry;

	if (!snd_card_proc_new(chip->card, "codec", &entry))
		snd_info_set_text_ops(entry, chip, lola_proc_codec_read);
	if (!snd_card_proc_new(chip->card, "codec_rw", &entry)) {
		snd_info_set_text_ops(entry, chip, lola_proc_codec_rw_read);
		entry->mode |= S_IWUSR;
		entry->c.text.write = lola_proc_codec_rw_write;
	}
	if (!snd_card_proc_new(chip->card, "regs", &entry))
		snd_info_set_text_ops(entry, chip, lola_proc_regs_read);
}