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-rw-r--r--sound/soc/codecs/arizona.c937
1 files changed, 937 insertions, 0 deletions
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
new file mode 100644
index 00000000000..5c9cacaf2d5
--- /dev/null
+++ b/sound/soc/codecs/arizona.c
@@ -0,0 +1,937 @@
+/*
+ * arizona.c - Wolfson Arizona class device shared support
+ *
+ * Copyright 2012 Wolfson Microelectronics plc
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/gcd.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/tlv.h>
+
+#include <linux/mfd/arizona/core.h>
+#include <linux/mfd/arizona/registers.h>
+
+#include "arizona.h"
+
+#define ARIZONA_AIF_BCLK_CTRL 0x00
+#define ARIZONA_AIF_TX_PIN_CTRL 0x01
+#define ARIZONA_AIF_RX_PIN_CTRL 0x02
+#define ARIZONA_AIF_RATE_CTRL 0x03
+#define ARIZONA_AIF_FORMAT 0x04
+#define ARIZONA_AIF_TX_BCLK_RATE 0x05
+#define ARIZONA_AIF_RX_BCLK_RATE 0x06
+#define ARIZONA_AIF_FRAME_CTRL_1 0x07
+#define ARIZONA_AIF_FRAME_CTRL_2 0x08
+#define ARIZONA_AIF_FRAME_CTRL_3 0x09
+#define ARIZONA_AIF_FRAME_CTRL_4 0x0A
+#define ARIZONA_AIF_FRAME_CTRL_5 0x0B
+#define ARIZONA_AIF_FRAME_CTRL_6 0x0C
+#define ARIZONA_AIF_FRAME_CTRL_7 0x0D
+#define ARIZONA_AIF_FRAME_CTRL_8 0x0E
+#define ARIZONA_AIF_FRAME_CTRL_9 0x0F
+#define ARIZONA_AIF_FRAME_CTRL_10 0x10
+#define ARIZONA_AIF_FRAME_CTRL_11 0x11
+#define ARIZONA_AIF_FRAME_CTRL_12 0x12
+#define ARIZONA_AIF_FRAME_CTRL_13 0x13
+#define ARIZONA_AIF_FRAME_CTRL_14 0x14
+#define ARIZONA_AIF_FRAME_CTRL_15 0x15
+#define ARIZONA_AIF_FRAME_CTRL_16 0x16
+#define ARIZONA_AIF_FRAME_CTRL_17 0x17
+#define ARIZONA_AIF_FRAME_CTRL_18 0x18
+#define ARIZONA_AIF_TX_ENABLES 0x19
+#define ARIZONA_AIF_RX_ENABLES 0x1A
+#define ARIZONA_AIF_FORCE_WRITE 0x1B
+
+#define arizona_fll_err(_fll, fmt, ...) \
+ dev_err(_fll->arizona->dev, "FLL%d: " fmt, _fll->id, ##__VA_ARGS__)
+#define arizona_fll_warn(_fll, fmt, ...) \
+ dev_warn(_fll->arizona->dev, "FLL%d: " fmt, _fll->id, ##__VA_ARGS__)
+#define arizona_fll_dbg(_fll, fmt, ...) \
+ dev_err(_fll->arizona->dev, "FLL%d: " fmt, _fll->id, ##__VA_ARGS__)
+
+#define arizona_aif_err(_dai, fmt, ...) \
+ dev_err(_dai->dev, "AIF%d: " fmt, _dai->id, ##__VA_ARGS__)
+#define arizona_aif_warn(_dai, fmt, ...) \
+ dev_warn(_dai->dev, "AIF%d: " fmt, _dai->id, ##__VA_ARGS__)
+#define arizona_aif_dbg(_dai, fmt, ...) \
+ dev_err(_dai->dev, "AIF%d: " fmt, _dai->id, ##__VA_ARGS__)
+
+const char *arizona_mixer_texts[ARIZONA_NUM_MIXER_INPUTS] = {
+ "None",
+ "Tone Generator 1",
+ "Tone Generator 2",
+ "Haptics",
+ "AEC",
+ "Mic Mute Mixer",
+ "Noise Generator",
+ "IN1L",
+ "IN1R",
+ "IN2L",
+ "IN2R",
+ "IN3L",
+ "IN3R",
+ "IN4L",
+ "IN4R",
+ "AIF1RX1",
+ "AIF1RX2",
+ "AIF1RX3",
+ "AIF1RX4",
+ "AIF1RX5",
+ "AIF1RX6",
+ "AIF1RX7",
+ "AIF1RX8",
+ "AIF2RX1",
+ "AIF2RX2",
+ "AIF3RX1",
+ "AIF3RX2",
+ "SLIMRX1",
+ "SLIMRX2",
+ "SLIMRX3",
+ "SLIMRX4",
+ "SLIMRX5",
+ "SLIMRX6",
+ "SLIMRX7",
+ "SLIMRX8",
+ "EQ1",
+ "EQ2",
+ "EQ3",
+ "EQ4",
+ "DRC1L",
+ "DRC1R",
+ "DRC2L",
+ "DRC2R",
+ "LHPF1",
+ "LHPF2",
+ "LHPF3",
+ "LHPF4",
+ "DSP1.1",
+ "DSP1.2",
+ "DSP1.3",
+ "DSP1.4",
+ "DSP1.5",
+ "DSP1.6",
+ "ASRC1L",
+ "ASRC1R",
+ "ASRC2L",
+ "ASRC2R",
+};
+EXPORT_SYMBOL_GPL(arizona_mixer_texts);
+
+int arizona_mixer_values[ARIZONA_NUM_MIXER_INPUTS] = {
+ 0x00, /* None */
+ 0x04, /* Tone */
+ 0x05,
+ 0x06, /* Haptics */
+ 0x08, /* AEC */
+ 0x0c, /* Noise mixer */
+ 0x0d, /* Comfort noise */
+ 0x10, /* IN1L */
+ 0x11,
+ 0x12,
+ 0x13,
+ 0x14,
+ 0x15,
+ 0x16,
+ 0x17,
+ 0x20, /* AIF1RX1 */
+ 0x21,
+ 0x22,
+ 0x23,
+ 0x24,
+ 0x25,
+ 0x26,
+ 0x27,
+ 0x28, /* AIF2RX1 */
+ 0x29,
+ 0x30, /* AIF3RX1 */
+ 0x31,
+ 0x38, /* SLIMRX1 */
+ 0x39,
+ 0x3a,
+ 0x3b,
+ 0x3c,
+ 0x3d,
+ 0x3e,
+ 0x3f,
+ 0x50, /* EQ1 */
+ 0x51,
+ 0x52,
+ 0x53,
+ 0x58, /* DRC1L */
+ 0x59,
+ 0x5a,
+ 0x5b,
+ 0x60, /* LHPF1 */
+ 0x61,
+ 0x62,
+ 0x63,
+ 0x68, /* DSP1.1 */
+ 0x69,
+ 0x6a,
+ 0x6b,
+ 0x6c,
+ 0x6d,
+ 0x90, /* ASRC1L */
+ 0x91,
+ 0x92,
+ 0x93,
+};
+EXPORT_SYMBOL_GPL(arizona_mixer_values);
+
+const DECLARE_TLV_DB_SCALE(arizona_mixer_tlv, -3200, 100, 0);
+EXPORT_SYMBOL_GPL(arizona_mixer_tlv);
+
+static const char *arizona_lhpf_mode_text[] = {
+ "Low-pass", "High-pass"
+};
+
+const struct soc_enum arizona_lhpf1_mode =
+ SOC_ENUM_SINGLE(ARIZONA_HPLPF1_1, ARIZONA_LHPF1_MODE_SHIFT, 2,
+ arizona_lhpf_mode_text);
+EXPORT_SYMBOL_GPL(arizona_lhpf1_mode);
+
+const struct soc_enum arizona_lhpf2_mode =
+ SOC_ENUM_SINGLE(ARIZONA_HPLPF2_1, ARIZONA_LHPF2_MODE_SHIFT, 2,
+ arizona_lhpf_mode_text);
+EXPORT_SYMBOL_GPL(arizona_lhpf2_mode);
+
+const struct soc_enum arizona_lhpf3_mode =
+ SOC_ENUM_SINGLE(ARIZONA_HPLPF3_1, ARIZONA_LHPF3_MODE_SHIFT, 2,
+ arizona_lhpf_mode_text);
+EXPORT_SYMBOL_GPL(arizona_lhpf3_mode);
+
+const struct soc_enum arizona_lhpf4_mode =
+ SOC_ENUM_SINGLE(ARIZONA_HPLPF4_1, ARIZONA_LHPF4_MODE_SHIFT, 2,
+ arizona_lhpf_mode_text);
+EXPORT_SYMBOL_GPL(arizona_lhpf4_mode);
+
+int arizona_in_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol,
+ int event)
+{
+ return 0;
+}
+EXPORT_SYMBOL_GPL(arizona_in_ev);
+
+int arizona_out_ev(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol,
+ int event)
+{
+ return 0;
+}
+EXPORT_SYMBOL_GPL(arizona_out_ev);
+
+int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id,
+ int source, unsigned int freq, int dir)
+{
+ struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
+ struct arizona *arizona = priv->arizona;
+ char *name;
+ unsigned int reg;
+ unsigned int mask = ARIZONA_SYSCLK_FREQ_MASK | ARIZONA_SYSCLK_SRC_MASK;
+ unsigned int val = source << ARIZONA_SYSCLK_SRC_SHIFT;
+ unsigned int *clk;
+
+ switch (clk_id) {
+ case ARIZONA_CLK_SYSCLK:
+ name = "SYSCLK";
+ reg = ARIZONA_SYSTEM_CLOCK_1;
+ clk = &priv->sysclk;
+ mask |= ARIZONA_SYSCLK_FRAC;
+ break;
+ case ARIZONA_CLK_ASYNCCLK:
+ name = "ASYNCCLK";
+ reg = ARIZONA_ASYNC_CLOCK_1;
+ clk = &priv->asyncclk;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (freq) {
+ case 5644800:
+ case 6144000:
+ break;
+ case 11289600:
+ case 12288000:
+ val |= 1 << ARIZONA_SYSCLK_FREQ_SHIFT;
+ break;
+ case 22579200:
+ case 24576000:
+ val |= 2 << ARIZONA_SYSCLK_FREQ_SHIFT;
+ break;
+ case 45158400:
+ case 49152000:
+ val |= 3 << ARIZONA_SYSCLK_FREQ_SHIFT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ *clk = freq;
+
+ if (freq % 6144000)
+ val |= ARIZONA_SYSCLK_FRAC;
+
+ dev_dbg(arizona->dev, "%s set to %uHz", name, freq);
+
+ return regmap_update_bits(arizona->regmap, reg, mask, val);
+}
+EXPORT_SYMBOL_GPL(arizona_set_sysclk);
+
+static int arizona_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ int lrclk, bclk, mode, base;
+
+ base = dai->driver->base;
+
+ lrclk = 0;
+ bclk = 0;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ mode = 0;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ mode = 1;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ mode = 2;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ mode = 3;
+ break;
+ default:
+ arizona_aif_err(dai, "Unsupported DAI format %d\n",
+ fmt & SND_SOC_DAIFMT_FORMAT_MASK);
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ break;
+ case SND_SOC_DAIFMT_CBS_CFM:
+ lrclk |= ARIZONA_AIF1TX_LRCLK_MSTR;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFS:
+ bclk |= ARIZONA_AIF1_BCLK_MSTR;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM:
+ bclk |= ARIZONA_AIF1_BCLK_MSTR;
+ lrclk |= ARIZONA_AIF1TX_LRCLK_MSTR;
+ break;
+ default:
+ arizona_aif_err(dai, "Unsupported master mode %d\n",
+ fmt & SND_SOC_DAIFMT_MASTER_MASK);
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ bclk |= ARIZONA_AIF1_BCLK_INV;
+ lrclk |= ARIZONA_AIF1TX_LRCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ bclk |= ARIZONA_AIF1_BCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ lrclk |= ARIZONA_AIF1TX_LRCLK_INV;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_BCLK_CTRL,
+ ARIZONA_AIF1_BCLK_INV | ARIZONA_AIF1_BCLK_MSTR,
+ bclk);
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_TX_PIN_CTRL,
+ ARIZONA_AIF1TX_LRCLK_INV |
+ ARIZONA_AIF1TX_LRCLK_MSTR, lrclk);
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_RX_PIN_CTRL,
+ ARIZONA_AIF1RX_LRCLK_INV |
+ ARIZONA_AIF1RX_LRCLK_MSTR, lrclk);
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_FORMAT,
+ ARIZONA_AIF1_FMT_MASK, mode);
+
+ return 0;
+}
+
+static const int arizona_48k_bclk_rates[] = {
+ -1,
+ 48000,
+ 64000,
+ 96000,
+ 128000,
+ 192000,
+ 256000,
+ 384000,
+ 512000,
+ 768000,
+ 1024000,
+ 1536000,
+ 2048000,
+ 3072000,
+ 4096000,
+ 6144000,
+ 8192000,
+ 12288000,
+ 24576000,
+};
+
+static const unsigned int arizona_48k_rates[] = {
+ 12000,
+ 24000,
+ 48000,
+ 96000,
+ 192000,
+ 384000,
+ 768000,
+ 4000,
+ 8000,
+ 16000,
+ 32000,
+ 64000,
+ 128000,
+ 256000,
+ 512000,
+};
+
+static const struct snd_pcm_hw_constraint_list arizona_48k_constraint = {
+ .count = ARRAY_SIZE(arizona_48k_rates),
+ .list = arizona_48k_rates,
+};
+
+static const int arizona_44k1_bclk_rates[] = {
+ -1,
+ 44100,
+ 58800,
+ 88200,
+ 117600,
+ 177640,
+ 235200,
+ 352800,
+ 470400,
+ 705600,
+ 940800,
+ 1411200,
+ 1881600,
+ 2882400,
+ 3763200,
+ 5644800,
+ 7526400,
+ 11289600,
+ 22579200,
+};
+
+static const unsigned int arizona_44k1_rates[] = {
+ 11025,
+ 22050,
+ 44100,
+ 88200,
+ 176400,
+ 352800,
+ 705600,
+};
+
+static const struct snd_pcm_hw_constraint_list arizona_44k1_constraint = {
+ .count = ARRAY_SIZE(arizona_44k1_rates),
+ .list = arizona_44k1_rates,
+};
+
+static int arizona_sr_vals[] = {
+ 0,
+ 12000,
+ 24000,
+ 48000,
+ 96000,
+ 192000,
+ 384000,
+ 768000,
+ 0,
+ 11025,
+ 22050,
+ 44100,
+ 88200,
+ 176400,
+ 352800,
+ 705600,
+ 4000,
+ 8000,
+ 16000,
+ 32000,
+ 64000,
+ 128000,
+ 256000,
+ 512000,
+};
+
+static int arizona_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
+ struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1];
+ const struct snd_pcm_hw_constraint_list *constraint;
+ unsigned int base_rate;
+
+ switch (dai_priv->clk) {
+ case ARIZONA_CLK_SYSCLK:
+ base_rate = priv->sysclk;
+ break;
+ case ARIZONA_CLK_ASYNCCLK:
+ base_rate = priv->asyncclk;
+ break;
+ default:
+ return 0;
+ }
+
+ if (base_rate % 8000)
+ constraint = &arizona_44k1_constraint;
+ else
+ constraint = &arizona_48k_constraint;
+
+ return snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ constraint);
+}
+
+static int arizona_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
+ struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1];
+ int base = dai->driver->base;
+ const int *rates;
+ int i;
+ int bclk, lrclk, wl, frame, sr_val;
+
+ if (params_rate(params) % 8000)
+ rates = &arizona_44k1_bclk_rates[0];
+ else
+ rates = &arizona_48k_bclk_rates[0];
+
+ for (i = 0; i < ARRAY_SIZE(arizona_44k1_bclk_rates); i++) {
+ if (rates[i] >= snd_soc_params_to_bclk(params) &&
+ rates[i] % params_rate(params) == 0) {
+ bclk = i;
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(arizona_44k1_bclk_rates)) {
+ arizona_aif_err(dai, "Unsupported sample rate %dHz\n",
+ params_rate(params));
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(arizona_sr_vals); i++)
+ if (arizona_sr_vals[i] == params_rate(params))
+ break;
+ if (i == ARRAY_SIZE(arizona_sr_vals)) {
+ arizona_aif_err(dai, "Unsupported sample rate %dHz\n",
+ params_rate(params));
+ return -EINVAL;
+ }
+ sr_val = i;
+
+ lrclk = snd_soc_params_to_bclk(params) / params_rate(params);
+
+ arizona_aif_dbg(dai, "BCLK %dHz LRCLK %dHz\n",
+ rates[bclk], rates[bclk] / lrclk);
+
+ wl = snd_pcm_format_width(params_format(params));
+ frame = wl << ARIZONA_AIF1TX_WL_SHIFT | wl;
+
+ /*
+ * We will need to be more flexible than this in future,
+ * currently we use a single sample rate for SYSCLK.
+ */
+ switch (dai_priv->clk) {
+ case ARIZONA_CLK_SYSCLK:
+ snd_soc_update_bits(codec, ARIZONA_SAMPLE_RATE_1,
+ ARIZONA_SAMPLE_RATE_1_MASK, sr_val);
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL,
+ ARIZONA_AIF1_RATE_MASK, 0);
+ break;
+ case ARIZONA_CLK_ASYNCCLK:
+ snd_soc_update_bits(codec, ARIZONA_ASYNC_SAMPLE_RATE_1,
+ ARIZONA_ASYNC_SAMPLE_RATE_MASK, sr_val);
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL,
+ ARIZONA_AIF1_RATE_MASK, 8);
+ break;
+ default:
+ arizona_aif_err(dai, "Invalid clock %d\n", dai_priv->clk);
+ return -EINVAL;
+ }
+
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_BCLK_CTRL,
+ ARIZONA_AIF1_BCLK_FREQ_MASK, bclk);
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_TX_BCLK_RATE,
+ ARIZONA_AIF1TX_BCPF_MASK, lrclk);
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_RX_BCLK_RATE,
+ ARIZONA_AIF1RX_BCPF_MASK, lrclk);
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_FRAME_CTRL_1,
+ ARIZONA_AIF1TX_WL_MASK |
+ ARIZONA_AIF1TX_SLOT_LEN_MASK, frame);
+ snd_soc_update_bits(codec, base + ARIZONA_AIF_FRAME_CTRL_2,
+ ARIZONA_AIF1RX_WL_MASK |
+ ARIZONA_AIF1RX_SLOT_LEN_MASK, frame);
+
+ return 0;
+}
+
+static const char *arizona_dai_clk_str(int clk_id)
+{
+ switch (clk_id) {
+ case ARIZONA_CLK_SYSCLK:
+ return "SYSCLK";
+ case ARIZONA_CLK_ASYNCCLK:
+ return "ASYNCCLK";
+ default:
+ return "Unknown clock";
+ }
+}
+
+static int arizona_dai_set_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
+ struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1];
+ struct snd_soc_dapm_route routes[2];
+
+ switch (clk_id) {
+ case ARIZONA_CLK_SYSCLK:
+ case ARIZONA_CLK_ASYNCCLK:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (clk_id == dai_priv->clk)
+ return 0;
+
+ if (dai->active) {
+ dev_err(codec->dev, "Can't change clock on active DAI %d\n",
+ dai->id);
+ return -EBUSY;
+ }
+
+ memset(&routes, 0, sizeof(routes));
+ routes[0].sink = dai->driver->capture.stream_name;
+ routes[1].sink = dai->driver->playback.stream_name;
+
+ routes[0].source = arizona_dai_clk_str(dai_priv->clk);
+ routes[1].source = arizona_dai_clk_str(dai_priv->clk);
+ snd_soc_dapm_del_routes(&codec->dapm, routes, ARRAY_SIZE(routes));
+
+ routes[0].source = arizona_dai_clk_str(clk_id);
+ routes[1].source = arizona_dai_clk_str(clk_id);
+ snd_soc_dapm_add_routes(&codec->dapm, routes, ARRAY_SIZE(routes));
+
+ return snd_soc_dapm_sync(&codec->dapm);
+}
+
+const struct snd_soc_dai_ops arizona_dai_ops = {
+ .startup = arizona_startup,
+ .set_fmt = arizona_set_fmt,
+ .hw_params = arizona_hw_params,
+ .set_sysclk = arizona_dai_set_sysclk,
+};
+EXPORT_SYMBOL_GPL(arizona_dai_ops);
+
+int arizona_init_dai(struct arizona_priv *priv, int id)
+{
+ struct arizona_dai_priv *dai_priv = &priv->dai[id];
+
+ dai_priv->clk = ARIZONA_CLK_SYSCLK;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(arizona_init_dai);
+
+static irqreturn_t arizona_fll_lock(int irq, void *data)
+{
+ struct arizona_fll *fll = data;
+
+ arizona_fll_dbg(fll, "Locked\n");
+
+ complete(&fll->lock);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t arizona_fll_clock_ok(int irq, void *data)
+{
+ struct arizona_fll *fll = data;
+
+ arizona_fll_dbg(fll, "clock OK\n");
+
+ complete(&fll->ok);
+
+ return IRQ_HANDLED;
+}
+
+static struct {
+ unsigned int min;
+ unsigned int max;
+ u16 fratio;
+ int ratio;
+} fll_fratios[] = {
+ { 0, 64000, 4, 16 },
+ { 64000, 128000, 3, 8 },
+ { 128000, 256000, 2, 4 },
+ { 256000, 1000000, 1, 2 },
+ { 1000000, 13500000, 0, 1 },
+};
+
+struct arizona_fll_cfg {
+ int n;
+ int theta;
+ int lambda;
+ int refdiv;
+ int outdiv;
+ int fratio;
+};
+
+static int arizona_calc_fll(struct arizona_fll *fll,
+ struct arizona_fll_cfg *cfg,
+ unsigned int Fref,
+ unsigned int Fout)
+{
+ unsigned int target, div, gcd_fll;
+ int i, ratio;
+
+ arizona_fll_dbg(fll, "Fref=%u Fout=%u\n", Fref, Fout);
+
+ /* Fref must be <=13.5MHz */
+ div = 1;
+ cfg->refdiv = 0;
+ while ((Fref / div) > 13500000) {
+ div *= 2;
+ cfg->refdiv++;
+
+ if (div > 8) {
+ arizona_fll_err(fll,
+ "Can't scale %dMHz in to <=13.5MHz\n",
+ Fref);
+ return -EINVAL;
+ }
+ }
+
+ /* Apply the division for our remaining calculations */
+ Fref /= div;
+
+ /* Fvco should be over the targt; don't check the upper bound */
+ div = 1;
+ while (Fout * div < 90000000 * fll->vco_mult) {
+ div++;
+ if (div > 7) {
+ arizona_fll_err(fll, "No FLL_OUTDIV for Fout=%uHz\n",
+ Fout);
+ return -EINVAL;
+ }
+ }
+ target = Fout * div / fll->vco_mult;
+ cfg->outdiv = div;
+
+ arizona_fll_dbg(fll, "Fvco=%dHz\n", target);
+
+ /* Find an appropraite FLL_FRATIO and factor it out of the target */
+ for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
+ if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
+ cfg->fratio = fll_fratios[i].fratio;
+ ratio = fll_fratios[i].ratio;
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(fll_fratios)) {
+ arizona_fll_err(fll, "Unable to find FRATIO for Fref=%uHz\n",
+ Fref);
+ return -EINVAL;
+ }
+
+ cfg->n = target / (ratio * Fref);
+
+ if (target % Fref) {
+ gcd_fll = gcd(target, ratio * Fref);
+ arizona_fll_dbg(fll, "GCD=%u\n", gcd_fll);
+
+ cfg->theta = (target - (cfg->n * ratio * Fref))
+ / gcd_fll;
+ cfg->lambda = (ratio * Fref) / gcd_fll;
+ } else {
+ cfg->theta = 0;
+ cfg->lambda = 0;
+ }
+
+ arizona_fll_dbg(fll, "N=%x THETA=%x LAMBDA=%x\n",
+ cfg->n, cfg->theta, cfg->lambda);
+ arizona_fll_dbg(fll, "FRATIO=%x(%d) OUTDIV=%x REFCLK_DIV=%x\n",
+ cfg->fratio, cfg->fratio, cfg->outdiv, cfg->refdiv);
+
+ return 0;
+
+}
+
+static void arizona_apply_fll(struct arizona *arizona, unsigned int base,
+ struct arizona_fll_cfg *cfg, int source)
+{
+ regmap_update_bits(arizona->regmap, base + 3,
+ ARIZONA_FLL1_THETA_MASK, cfg->theta);
+ regmap_update_bits(arizona->regmap, base + 4,
+ ARIZONA_FLL1_LAMBDA_MASK, cfg->lambda);
+ regmap_update_bits(arizona->regmap, base + 5,
+ ARIZONA_FLL1_FRATIO_MASK,
+ cfg->fratio << ARIZONA_FLL1_FRATIO_SHIFT);
+ regmap_update_bits(arizona->regmap, base + 6,
+ ARIZONA_FLL1_CLK_REF_DIV_MASK |
+ ARIZONA_FLL1_CLK_REF_SRC_MASK,
+ cfg->refdiv << ARIZONA_FLL1_CLK_REF_DIV_SHIFT |
+ source << ARIZONA_FLL1_CLK_REF_SRC_SHIFT);
+
+ regmap_update_bits(arizona->regmap, base + 2,
+ ARIZONA_FLL1_CTRL_UPD | ARIZONA_FLL1_N_MASK,
+ ARIZONA_FLL1_CTRL_UPD | cfg->n);
+}
+
+int arizona_set_fll(struct arizona_fll *fll, int source,
+ unsigned int Fref, unsigned int Fout)
+{
+ struct arizona *arizona = fll->arizona;
+ struct arizona_fll_cfg cfg, sync;
+ unsigned int reg, val;
+ int syncsrc;
+ bool ena;
+ int ret;
+
+ ret = regmap_read(arizona->regmap, fll->base + 1, &reg);
+ if (ret != 0) {
+ arizona_fll_err(fll, "Failed to read current state: %d\n",
+ ret);
+ return ret;
+ }
+ ena = reg & ARIZONA_FLL1_ENA;
+
+ if (Fout) {
+ /* Do we have a 32kHz reference? */
+ regmap_read(arizona->regmap, ARIZONA_CLOCK_32K_1, &val);
+ switch (val & ARIZONA_CLK_32K_SRC_MASK) {
+ case ARIZONA_CLK_SRC_MCLK1:
+ case ARIZONA_CLK_SRC_MCLK2:
+ syncsrc = val & ARIZONA_CLK_32K_SRC_MASK;
+ break;
+ default:
+ syncsrc = -1;
+ }
+
+ if (source == syncsrc)
+ syncsrc = -1;
+
+ if (syncsrc >= 0) {
+ ret = arizona_calc_fll(fll, &sync, Fref, Fout);
+ if (ret != 0)
+ return ret;
+
+ ret = arizona_calc_fll(fll, &cfg, 32768, Fout);
+ if (ret != 0)
+ return ret;
+ } else {
+ ret = arizona_calc_fll(fll, &cfg, Fref, Fout);
+ if (ret != 0)
+ return ret;
+ }
+ } else {
+ regmap_update_bits(arizona->regmap, fll->base + 1,
+ ARIZONA_FLL1_ENA, 0);
+ regmap_update_bits(arizona->regmap, fll->base + 0x11,
+ ARIZONA_FLL1_SYNC_ENA, 0);
+
+ if (ena)
+ pm_runtime_put_autosuspend(arizona->dev);
+
+ return 0;
+ }
+
+ regmap_update_bits(arizona->regmap, fll->base + 5,
+ ARIZONA_FLL1_OUTDIV_MASK,
+ cfg.outdiv << ARIZONA_FLL1_OUTDIV_SHIFT);
+
+ if (syncsrc >= 0) {
+ arizona_apply_fll(arizona, fll->base, &cfg, syncsrc);
+ arizona_apply_fll(arizona, fll->base + 0x10, &sync, source);
+ } else {
+ arizona_apply_fll(arizona, fll->base, &cfg, source);
+ }
+
+ if (!ena)
+ pm_runtime_get(arizona->dev);
+
+ /* Clear any pending completions */
+ try_wait_for_completion(&fll->ok);
+
+ regmap_update_bits(arizona->regmap, fll->base + 1,
+ ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA);
+ if (syncsrc >= 0)
+ regmap_update_bits(arizona->regmap, fll->base + 0x11,
+ ARIZONA_FLL1_SYNC_ENA,
+ ARIZONA_FLL1_SYNC_ENA);
+
+ ret = wait_for_completion_timeout(&fll->ok,
+ msecs_to_jiffies(25));
+ if (ret == 0)
+ arizona_fll_warn(fll, "Timed out waiting for lock\n");
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(arizona_set_fll);
+
+int arizona_init_fll(struct arizona *arizona, int id, int base, int lock_irq,
+ int ok_irq, struct arizona_fll *fll)
+{
+ int ret;
+
+ init_completion(&fll->lock);
+ init_completion(&fll->ok);
+
+ fll->id = id;
+ fll->base = base;
+ fll->arizona = arizona;
+
+ snprintf(fll->lock_name, sizeof(fll->lock_name), "FLL%d lock", id);
+ snprintf(fll->clock_ok_name, sizeof(fll->clock_ok_name),
+ "FLL%d clock OK", id);
+
+ ret = arizona_request_irq(arizona, lock_irq, fll->lock_name,
+ arizona_fll_lock, fll);
+ if (ret != 0) {
+ dev_err(arizona->dev, "Failed to get FLL%d lock IRQ: %d\n",
+ id, ret);
+ }
+
+ ret = arizona_request_irq(arizona, ok_irq, fll->clock_ok_name,
+ arizona_fll_clock_ok, fll);
+ if (ret != 0) {
+ dev_err(arizona->dev, "Failed to get FLL%d clock OK IRQ: %d\n",
+ id, ret);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(arizona_init_fll);
+
+MODULE_DESCRIPTION("ASoC Wolfson Arizona class device support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-15 13:11:33 +0000