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377 lines
10 KiB
Diff
377 lines
10 KiB
Diff
From e37c55733587a312181a12a8f15b8f35497c828e Mon Sep 17 00:00:00 2001
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From: allocom <sparky-dev@allo.com>
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Date: Thu, 19 Apr 2018 12:12:26 +0530
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Subject: [PATCH] Driver and overlay for Allo Katana DAC
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Allo Katana DAC: Updated default values
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Signed-off-by: Jaikumar <jaikumar@cem-solutions.com>
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---
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sound/soc/bcm/allo-katana-codec.c | 360 ++++++++++++++++++++++++++++++
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1 file changed, 360 insertions(+)
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create mode 100644 sound/soc/bcm/allo-katana-codec.c
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--- /dev/null
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+++ b/sound/soc/bcm/allo-katana-codec.c
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@@ -0,0 +1,360 @@
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+/*
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+ * Driver for the ALLO KATANA CODEC
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+ *
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+ * Author: Jaikumar <jaikumar@cem-solutions.net>
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+ * Copyright 2018
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * version 2 as published by the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ */
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+
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+
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+#include <linux/init.h>
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+#include <linux/module.h>
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+#include <linux/clk.h>
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+#include <linux/kernel.h>
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+#include <linux/regmap.h>
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+#include <linux/regulator/consumer.h>
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+#include <linux/gcd.h>
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+#include <sound/soc.h>
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+#include <sound/soc-dapm.h>
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+#include <sound/pcm_params.h>
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+#include <sound/tlv.h>
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+#include <linux/i2c.h>
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+
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+
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+#define KATANA_CODEC_CHIP_ID 0x30
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+#define KATANA_CODEC_VIRT_BASE 0x100
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+#define KATANA_CODEC_PAGE 0
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+
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+#define KATANA_CODEC_CHIP_ID_REG (KATANA_CODEC_VIRT_BASE + 0)
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+#define KATANA_CODEC_RESET (KATANA_CODEC_VIRT_BASE + 1)
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+#define KATANA_CODEC_VOLUME_1 (KATANA_CODEC_VIRT_BASE + 2)
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+#define KATANA_CODEC_VOLUME_2 (KATANA_CODEC_VIRT_BASE + 3)
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+#define KATANA_CODEC_MUTE (KATANA_CODEC_VIRT_BASE + 4)
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+#define KATANA_CODEC_DSP_PROGRAM (KATANA_CODEC_VIRT_BASE + 5)
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+#define KATANA_CODEC_DEEMPHASIS (KATANA_CODEC_VIRT_BASE + 6)
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+#define KATANA_CODEC_DOP (KATANA_CODEC_VIRT_BASE + 7)
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+#define KATANA_CODEC_FORMAT (KATANA_CODEC_VIRT_BASE + 8)
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+#define KATANA_CODEC_COMMAND (KATANA_CODEC_VIRT_BASE + 9)
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+#define KATANA_CODEC_MAX_REGISTER (KATANA_CODEC_VIRT_BASE + 9)
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+
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+#define KATANA_CODEC_FMT 0xff
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+#define KATANA_CODEC_CHAN_MONO 0x00
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+#define KATANA_CODEC_CHAN_STEREO 0x80
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+#define KATANA_CODEC_ALEN_16 0x10
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+#define KATANA_CODEC_ALEN_24 0x20
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+#define KATANA_CODEC_ALEN_32 0x30
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+#define KATANA_CODEC_RATE_11025 0x01
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+#define KATANA_CODEC_RATE_22050 0x02
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+#define KATANA_CODEC_RATE_32000 0x03
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+#define KATANA_CODEC_RATE_44100 0x04
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+#define KATANA_CODEC_RATE_48000 0x05
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+#define KATANA_CODEC_RATE_88200 0x06
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+#define KATANA_CODEC_RATE_96000 0x07
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+#define KATANA_CODEC_RATE_176400 0x08
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+#define KATANA_CODEC_RATE_192000 0x09
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+#define KATANA_CODEC_RATE_352800 0x0a
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+#define KATANA_CODEC_RATE_384000 0x0b
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+
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+
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+struct katana_codec_priv {
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+ struct regmap *regmap;
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+ int fmt;
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+};
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+
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+static const struct reg_default katana_codec_reg_defaults[] = {
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+ { KATANA_CODEC_RESET, 0x00 },
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+ { KATANA_CODEC_VOLUME_1, 0xF0 },
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+ { KATANA_CODEC_VOLUME_2, 0xF0 },
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+ { KATANA_CODEC_MUTE, 0x00 },
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+ { KATANA_CODEC_DSP_PROGRAM, 0x04 },
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+ { KATANA_CODEC_DEEMPHASIS, 0x00 },
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+ { KATANA_CODEC_DOP, 0x00 },
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+ { KATANA_CODEC_FORMAT, 0xb4 },
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+};
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+
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+static const char * const katana_codec_dsp_program_texts[] = {
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+ "Linear Phase Fast Roll-off Filter",
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+ "Linear Phase Slow Roll-off Filter",
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+ "Minimum Phase Fast Roll-off Filter",
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+ "Minimum Phase Slow Roll-off Filter",
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+ "Apodizing Fast Roll-off Filter",
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+ "Corrected Minimum Phase Fast Roll-off Filter",
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+ "Brick Wall Filter",
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+};
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+
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+static const unsigned int katana_codec_dsp_program_values[] = {
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+ 0,
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+ 1,
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+ 2,
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+ 3,
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+ 4,
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+ 6,
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+ 7,
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+};
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+
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+static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_dsp_program,
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+ KATANA_CODEC_DSP_PROGRAM, 0, 0x07,
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+ katana_codec_dsp_program_texts,
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+ katana_codec_dsp_program_values);
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+
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+static const char * const katana_codec_deemphasis_texts[] = {
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+ "Bypass",
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+ "32kHz",
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+ "44.1kHz",
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+ "48kHz",
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+};
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+
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+static const unsigned int katana_codec_deemphasis_values[] = {
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+ 0,
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+ 1,
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+ 2,
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+ 3,
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+};
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+
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+static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_deemphasis,
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+ KATANA_CODEC_DEEMPHASIS, 0, 0x03,
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+ katana_codec_deemphasis_texts,
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+ katana_codec_deemphasis_values);
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+
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+static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(master_tlv, -12700, 0);
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+
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+static const struct snd_kcontrol_new katana_codec_controls[] = {
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+ SOC_DOUBLE_R_TLV("Master Playback Volume", KATANA_CODEC_VOLUME_1,
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+ KATANA_CODEC_VOLUME_2, 0, 255, 1, master_tlv),
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+ SOC_DOUBLE("Master Playback Switch", KATANA_CODEC_MUTE, 0, 0, 1, 1),
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+ SOC_ENUM("DSP Program Route", katana_codec_dsp_program),
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+ SOC_ENUM("Deemphasis Route", katana_codec_deemphasis),
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+ SOC_SINGLE("DoP Playback Switch", KATANA_CODEC_DOP, 0, 1, 1)
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+};
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+
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+static bool katana_codec_readable_register(struct device *dev, unsigned int reg)
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+{
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+ switch (reg) {
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+ case KATANA_CODEC_CHIP_ID_REG:
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+ return true;
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+ default:
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+ return reg < 0xff;
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+ }
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+}
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+
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+static int katana_codec_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params,
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+ struct snd_soc_dai *dai)
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+{
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+ struct snd_soc_component *component = dai->component;
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+ struct katana_codec_priv *katana_codec = snd_soc_component_get_drvdata(component);
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+ int fmt = 0;
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+ int ret;
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+
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+ dev_dbg(component->card->dev, "hw_params %u Hz, %u channels\n",
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+ params_rate(params),
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+ params_channels(params));
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+
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+ switch (katana_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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+ case SND_SOC_DAIFMT_CBM_CFM: // master
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+ if (params_channels(params) == 2)
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+ fmt = KATANA_CODEC_CHAN_STEREO;
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+ else
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+ fmt = KATANA_CODEC_CHAN_MONO;
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+
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+ switch (params_width(params)) {
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+ case 16:
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+ fmt |= KATANA_CODEC_ALEN_16;
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+ break;
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+ case 24:
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+ fmt |= KATANA_CODEC_ALEN_24;
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+ break;
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+ case 32:
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+ fmt |= KATANA_CODEC_ALEN_32;
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+ break;
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+ default:
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+ dev_err(component->card->dev, "Bad frame size: %d\n",
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+ params_width(params));
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+ return -EINVAL;
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+ }
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+
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+ switch (params_rate(params)) {
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+ case 44100:
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+ fmt |= KATANA_CODEC_RATE_44100;
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+ break;
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+ case 48000:
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+ fmt |= KATANA_CODEC_RATE_48000;
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+ break;
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+ case 88200:
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+ fmt |= KATANA_CODEC_RATE_88200;
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+ break;
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+ case 96000:
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+ fmt |= KATANA_CODEC_RATE_96000;
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+ break;
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+ case 176400:
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+ fmt |= KATANA_CODEC_RATE_176400;
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+ break;
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+ case 192000:
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+ fmt |= KATANA_CODEC_RATE_192000;
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+ break;
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+ case 352800:
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+ fmt |= KATANA_CODEC_RATE_352800;
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+ break;
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+ case 384000:
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+ fmt |= KATANA_CODEC_RATE_384000;
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+ break;
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+ default:
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+ dev_err(component->card->dev, "Bad sample rate: %d\n",
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+ params_rate(params));
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+ return -EINVAL;
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+ }
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+
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+ ret = regmap_write(katana_codec->regmap, KATANA_CODEC_FORMAT, fmt);
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+ if (ret != 0) {
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+ dev_err(component->card->dev, "Failed to set format: %d\n", ret);
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+ return ret;
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+ }
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+ break;
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+
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ return 0;
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+}
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+
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+static int katana_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
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+{
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+ struct snd_soc_component *component = dai->component;
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+ struct katana_codec_priv *katana_codec = snd_soc_component_get_drvdata(component);
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+
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+ katana_codec->fmt = fmt;
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+
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+ return 0;
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+}
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+
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+static const struct snd_soc_dai_ops katana_codec_dai_ops = {
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+ .hw_params = katana_codec_hw_params,
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+ .set_fmt = katana_codec_set_fmt,
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+};
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+
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+static struct snd_soc_dai_driver katana_codec_dai = {
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+ .name = "allo-katana-codec",
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+ .playback = {
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+ .stream_name = "Playback",
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+ .channels_min = 2,
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+ .channels_max = 2,
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+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
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+ .rate_min = 44100,
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+ .rate_max = 384000,
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+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
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+ SNDRV_PCM_FMTBIT_S32_LE
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+ },
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+ .ops = &katana_codec_dai_ops,
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+};
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+
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+static struct snd_soc_component_driver katana_codec_component_driver = {
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+ .idle_bias_on = true,
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+
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+ .controls = katana_codec_controls,
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+ .num_controls = ARRAY_SIZE(katana_codec_controls),
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+};
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+
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+static const struct regmap_range_cfg katana_codec_range = {
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+ .name = "Pages", .range_min = KATANA_CODEC_VIRT_BASE,
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+ .range_max = KATANA_CODEC_MAX_REGISTER,
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+ .selector_reg = KATANA_CODEC_PAGE,
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+ .selector_mask = 0xff,
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+ .window_start = 0, .window_len = 0x100,
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+};
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+
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+const struct regmap_config katana_codec_regmap = {
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+ .reg_bits = 8,
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+ .val_bits = 8,
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+
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+ .ranges = &katana_codec_range,
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+ .num_ranges = 1,
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+
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+ .max_register = KATANA_CODEC_MAX_REGISTER,
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+ .readable_reg = katana_codec_readable_register,
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+ .reg_defaults = katana_codec_reg_defaults,
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+ .num_reg_defaults = ARRAY_SIZE(katana_codec_reg_defaults),
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+ .cache_type = REGCACHE_RBTREE,
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+};
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+
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+static int allo_katana_component_probe(struct i2c_client *i2c,
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+ const struct i2c_device_id *id)
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+{
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+ struct regmap *regmap;
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+ struct regmap_config config = katana_codec_regmap;
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+ struct device *dev = &i2c->dev;
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+ struct katana_codec_priv *katana_codec;
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+ unsigned int chip_id = 0;
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+ int ret;
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+
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+ regmap = devm_regmap_init_i2c(i2c, &config);
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+ if (IS_ERR(regmap))
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+ return PTR_ERR(regmap);
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+
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+ katana_codec = devm_kzalloc(dev, sizeof(struct katana_codec_priv),
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+ GFP_KERNEL);
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+ if (!katana_codec)
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+ return -ENOMEM;
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+
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+ dev_set_drvdata(dev, katana_codec);
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+ katana_codec->regmap = regmap;
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+
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+ ret = regmap_read(regmap, KATANA_CODEC_CHIP_ID_REG, &chip_id);
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+ if ((ret != 0) || (chip_id != KATANA_CODEC_CHIP_ID)) {
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+ dev_err(dev, "Failed to read Chip or wrong Chip id: %d\n", ret);
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+ return ret;
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+ }
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+ regmap_update_bits(regmap, KATANA_CODEC_RESET, 0x01, 0x01);
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+ msleep(10);
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+
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+ ret = snd_soc_register_component(dev, &katana_codec_component_driver,
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+ &katana_codec_dai, 1);
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+ if (ret != 0) {
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+ dev_err(dev, "failed to register codec: %d\n", ret);
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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+static int allo_katana_component_remove(struct i2c_client *i2c)
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+{
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+ snd_soc_unregister_component(&i2c->dev);
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+ return 0;
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+}
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+
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+static const struct i2c_device_id allo_katana_component_id[] = {
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+ { "allo-katana-codec", },
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+ { }
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+};
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+MODULE_DEVICE_TABLE(i2c, allo_katana_component_id);
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+
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+static const struct of_device_id allo_katana_codec_of_match[] = {
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+ { .compatible = "allo,allo-katana-codec", },
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+ { }
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+};
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+MODULE_DEVICE_TABLE(of, allo_katana_codec_of_match);
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+
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+static struct i2c_driver allo_katana_component_driver = {
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+ .probe = allo_katana_component_probe,
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+ .remove = allo_katana_component_remove,
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+ .id_table = allo_katana_component_id,
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+ .driver = {
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+ .name = "allo-katana-codec",
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+ .of_match_table = allo_katana_codec_of_match,
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+ },
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+};
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+
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+module_i2c_driver(allo_katana_component_driver);
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+
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+MODULE_DESCRIPTION("ASoC Allo Katana Codec Driver");
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+MODULE_AUTHOR("Jaikumar <jaikumar@cem-solutions.net>");
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+MODULE_LICENSE("GPL v2");
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