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-rw-r--r--sound/soc/codecs/wm8960.c1589
1 files changed, 1589 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
new file mode 100644
index 0000000000..7689fe3cc8
--- /dev/null
+++ b/sound/soc/codecs/wm8960.c
@@ -0,0 +1,1589 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * wm8960.c -- WM8960 ALSA SoC Audio driver
+ *
+ * Copyright 2007-11 Wolfson Microelectronics, plc
+ *
+ * Author: Liam Girdwood
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/clk.h>
+#include <linux/i2c.h>
+#include <linux/acpi.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+#include <sound/wm8960.h>
+
+#include "wm8960.h"
+
+/* R25 - Power 1 */
+#define WM8960_VMID_MASK 0x180
+#define WM8960_VREF 0x40
+
+/* R26 - Power 2 */
+#define WM8960_PWR2_LOUT1 0x40
+#define WM8960_PWR2_ROUT1 0x20
+#define WM8960_PWR2_OUT3 0x02
+
+/* R28 - Anti-pop 1 */
+#define WM8960_POBCTRL 0x80
+#define WM8960_BUFDCOPEN 0x10
+#define WM8960_BUFIOEN 0x08
+#define WM8960_SOFT_ST 0x04
+#define WM8960_HPSTBY 0x01
+
+/* R29 - Anti-pop 2 */
+#define WM8960_DISOP 0x40
+#define WM8960_DRES_MASK 0x30
+
+#define WM8960_DSCH_TOUT 600 /* discharge timeout, ms */
+
+static bool is_pll_freq_available(unsigned int source, unsigned int target);
+static int wm8960_set_pll(struct snd_soc_component *component,
+ unsigned int freq_in, unsigned int freq_out);
+/*
+ * wm8960 register cache
+ * We can't read the WM8960 register space when we are
+ * using 2 wire for device control, so we cache them instead.
+ */
+static const struct reg_default wm8960_reg_defaults[] = {
+ { 0x0, 0x00a7 },
+ { 0x1, 0x00a7 },
+ { 0x2, 0x0000 },
+ { 0x3, 0x0000 },
+ { 0x4, 0x0000 },
+ { 0x5, 0x0008 },
+ { 0x6, 0x0000 },
+ { 0x7, 0x000a },
+ { 0x8, 0x01c0 },
+ { 0x9, 0x0000 },
+ { 0xa, 0x00ff },
+ { 0xb, 0x00ff },
+
+ { 0x10, 0x0000 },
+ { 0x11, 0x007b },
+ { 0x12, 0x0100 },
+ { 0x13, 0x0032 },
+ { 0x14, 0x0000 },
+ { 0x15, 0x00c3 },
+ { 0x16, 0x00c3 },
+ { 0x17, 0x01c0 },
+ { 0x18, 0x0000 },
+ { 0x19, 0x0000 },
+ { 0x1a, 0x0000 },
+ { 0x1b, 0x0000 },
+ { 0x1c, 0x0000 },
+ { 0x1d, 0x0000 },
+
+ { 0x20, 0x0100 },
+ { 0x21, 0x0100 },
+ { 0x22, 0x0050 },
+
+ { 0x25, 0x0050 },
+ { 0x26, 0x0000 },
+ { 0x27, 0x0000 },
+ { 0x28, 0x0000 },
+ { 0x29, 0x0000 },
+ { 0x2a, 0x0040 },
+ { 0x2b, 0x0000 },
+ { 0x2c, 0x0000 },
+ { 0x2d, 0x0050 },
+ { 0x2e, 0x0050 },
+ { 0x2f, 0x0000 },
+ { 0x30, 0x0002 },
+ { 0x31, 0x0037 },
+
+ { 0x33, 0x0080 },
+ { 0x34, 0x0008 },
+ { 0x35, 0x0031 },
+ { 0x36, 0x0026 },
+ { 0x37, 0x00e9 },
+};
+
+static bool wm8960_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case WM8960_RESET:
+ return true;
+ default:
+ return false;
+ }
+}
+
+#define WM8960_NUM_SUPPLIES 5
+static const char *wm8960_supply_names[WM8960_NUM_SUPPLIES] = {
+ "DCVDD",
+ "DBVDD",
+ "AVDD",
+ "SPKVDD1",
+ "SPKVDD2",
+};
+
+struct wm8960_priv {
+ struct clk *mclk;
+ struct regmap *regmap;
+ int (*set_bias_level)(struct snd_soc_component *,
+ enum snd_soc_bias_level level);
+ struct snd_soc_dapm_widget *lout1;
+ struct snd_soc_dapm_widget *rout1;
+ struct snd_soc_dapm_widget *out3;
+ bool deemph;
+ int lrclk;
+ int bclk;
+ int sysclk;
+ int clk_id;
+ int freq_in;
+ bool is_stream_in_use[2];
+ struct wm8960_data pdata;
+ ktime_t dsch_start;
+ struct regulator_bulk_data supplies[WM8960_NUM_SUPPLIES];
+};
+
+#define wm8960_reset(c) regmap_write(c, WM8960_RESET, 0)
+
+/* enumerated controls */
+static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
+ "Right Inverted", "Stereo Inversion"};
+static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
+static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
+static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
+static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
+static const char *wm8960_adc_data_output_sel[] = {
+ "Left Data = Left ADC; Right Data = Right ADC",
+ "Left Data = Left ADC; Right Data = Left ADC",
+ "Left Data = Right ADC; Right Data = Right ADC",
+ "Left Data = Right ADC; Right Data = Left ADC",
+};
+static const char *wm8960_dmonomix[] = {"Stereo", "Mono"};
+static const char *wm8960_dacslope[] = {"Normal", "Sloping"};
+
+static const struct soc_enum wm8960_enum[] = {
+ SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
+ SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
+ SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
+ SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
+ SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
+ SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
+ SOC_ENUM_SINGLE(WM8960_ADDCTL1, 2, 4, wm8960_adc_data_output_sel),
+ SOC_ENUM_SINGLE(WM8960_ADDCTL1, 4, 2, wm8960_dmonomix),
+ SOC_ENUM_SINGLE(WM8960_DACCTL2, 1, 2, wm8960_dacslope),
+};
+
+static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
+
+static int wm8960_set_deemph(struct snd_soc_component *component)
+{
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ int val, i, best;
+
+ /* If we're using deemphasis select the nearest available sample
+ * rate.
+ */
+ if (wm8960->deemph) {
+ best = 1;
+ for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
+ if (abs(deemph_settings[i] - wm8960->lrclk) <
+ abs(deemph_settings[best] - wm8960->lrclk))
+ best = i;
+ }
+
+ val = best << 1;
+ } else {
+ val = 0;
+ }
+
+ dev_dbg(component->dev, "Set deemphasis %d\n", val);
+
+ return snd_soc_component_update_bits(component, WM8960_DACCTL1,
+ 0x6, val);
+}
+
+static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+
+ ucontrol->value.integer.value[0] = wm8960->deemph;
+ return 0;
+}
+
+static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ unsigned int deemph = ucontrol->value.integer.value[0];
+
+ if (deemph > 1)
+ return -EINVAL;
+
+ wm8960->deemph = deemph;
+
+ return wm8960_set_deemph(component);
+}
+
+static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
+static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1725, 75, 0);
+static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
+static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
+static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
+static const DECLARE_TLV_DB_SCALE(lineinboost_tlv, -1500, 300, 1);
+static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(micboost_tlv,
+ 0, 1, TLV_DB_SCALE_ITEM(0, 1300, 0),
+ 2, 3, TLV_DB_SCALE_ITEM(2000, 900, 0),
+);
+
+static const struct snd_kcontrol_new wm8960_snd_controls[] = {
+SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
+ 0, 63, 0, inpga_tlv),
+SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
+ 6, 1, 0),
+SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
+ 7, 1, 1),
+
+SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume",
+ WM8960_INBMIX1, 4, 7, 0, lineinboost_tlv),
+SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume",
+ WM8960_INBMIX1, 1, 7, 0, lineinboost_tlv),
+SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume",
+ WM8960_INBMIX2, 4, 7, 0, lineinboost_tlv),
+SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume",
+ WM8960_INBMIX2, 1, 7, 0, lineinboost_tlv),
+SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT1 Volume",
+ WM8960_RINPATH, 4, 3, 0, micboost_tlv),
+SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT1 Volume",
+ WM8960_LINPATH, 4, 3, 0, micboost_tlv),
+
+SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
+ 0, 255, 0, dac_tlv),
+
+SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
+ 0, 127, 0, out_tlv),
+SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
+ 7, 1, 0),
+
+SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
+ 0, 127, 0, out_tlv),
+SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
+ 7, 1, 0),
+SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
+SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
+
+SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
+SOC_ENUM("ADC Polarity", wm8960_enum[0]),
+SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
+
+SOC_ENUM("DAC Polarity", wm8960_enum[1]),
+SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
+ wm8960_get_deemph, wm8960_put_deemph),
+
+SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
+SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
+SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
+SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
+
+SOC_ENUM("ALC Function", wm8960_enum[4]),
+SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
+SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
+SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
+SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
+SOC_ENUM("ALC Mode", wm8960_enum[5]),
+SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
+SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
+
+SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
+SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
+
+SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC,
+ 0, 255, 0, adc_tlv),
+
+SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
+ WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
+SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
+ WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
+SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
+ WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
+SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
+ WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
+
+SOC_ENUM("ADC Data Output Select", wm8960_enum[6]),
+SOC_ENUM("DAC Mono Mix", wm8960_enum[7]),
+SOC_ENUM("DAC Filter Characteristics", wm8960_enum[8]),
+};
+
+static const struct snd_kcontrol_new wm8960_lin_boost[] = {
+SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
+SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
+SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_lin[] = {
+SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_rin_boost[] = {
+SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
+SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
+SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_rin[] = {
+SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
+SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
+SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
+SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
+SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
+SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
+SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8960_mono_out[] = {
+SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
+SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
+SND_SOC_DAPM_INPUT("LINPUT1"),
+SND_SOC_DAPM_INPUT("RINPUT1"),
+SND_SOC_DAPM_INPUT("LINPUT2"),
+SND_SOC_DAPM_INPUT("RINPUT2"),
+SND_SOC_DAPM_INPUT("LINPUT3"),
+SND_SOC_DAPM_INPUT("RINPUT3"),
+
+SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
+
+SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
+ wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
+SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
+ wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
+
+SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
+ wm8960_lin, ARRAY_SIZE(wm8960_lin)),
+SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
+ wm8960_rin, ARRAY_SIZE(wm8960_rin)),
+
+SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0),
+SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0),
+
+SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
+SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
+
+SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
+ &wm8960_loutput_mixer[0],
+ ARRAY_SIZE(wm8960_loutput_mixer)),
+SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
+ &wm8960_routput_mixer[0],
+ ARRAY_SIZE(wm8960_routput_mixer)),
+
+SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
+SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
+
+SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
+SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
+
+SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
+SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
+
+SND_SOC_DAPM_OUTPUT("SPK_LP"),
+SND_SOC_DAPM_OUTPUT("SPK_LN"),
+SND_SOC_DAPM_OUTPUT("HP_L"),
+SND_SOC_DAPM_OUTPUT("HP_R"),
+SND_SOC_DAPM_OUTPUT("SPK_RP"),
+SND_SOC_DAPM_OUTPUT("SPK_RN"),
+SND_SOC_DAPM_OUTPUT("OUT3"),
+};
+
+static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
+SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
+ &wm8960_mono_out[0],
+ ARRAY_SIZE(wm8960_mono_out)),
+};
+
+/* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
+static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
+SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
+};
+
+static const struct snd_soc_dapm_route audio_paths[] = {
+ { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
+ { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
+ { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
+
+ { "Left Input Mixer", "Boost Switch", "Left Boost Mixer" },
+ { "Left Input Mixer", "Boost Switch", "LINPUT1" }, /* Really Boost Switch */
+ { "Left Input Mixer", NULL, "LINPUT2" },
+ { "Left Input Mixer", NULL, "LINPUT3" },
+
+ { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
+ { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
+ { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
+
+ { "Right Input Mixer", "Boost Switch", "Right Boost Mixer" },
+ { "Right Input Mixer", "Boost Switch", "RINPUT1" }, /* Really Boost Switch */
+ { "Right Input Mixer", NULL, "RINPUT2" },
+ { "Right Input Mixer", NULL, "RINPUT3" },
+
+ { "Left ADC", NULL, "Left Input Mixer" },
+ { "Right ADC", NULL, "Right Input Mixer" },
+
+ { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
+ { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer" },
+ { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
+
+ { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
+ { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" },
+ { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
+
+ { "LOUT1 PGA", NULL, "Left Output Mixer" },
+ { "ROUT1 PGA", NULL, "Right Output Mixer" },
+
+ { "HP_L", NULL, "LOUT1 PGA" },
+ { "HP_R", NULL, "ROUT1 PGA" },
+
+ { "Left Speaker PGA", NULL, "Left Output Mixer" },
+ { "Right Speaker PGA", NULL, "Right Output Mixer" },
+
+ { "Left Speaker Output", NULL, "Left Speaker PGA" },
+ { "Right Speaker Output", NULL, "Right Speaker PGA" },
+
+ { "SPK_LN", NULL, "Left Speaker Output" },
+ { "SPK_LP", NULL, "Left Speaker Output" },
+ { "SPK_RN", NULL, "Right Speaker Output" },
+ { "SPK_RP", NULL, "Right Speaker Output" },
+};
+
+static const struct snd_soc_dapm_route audio_paths_out3[] = {
+ { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
+ { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
+
+ { "OUT3", NULL, "Mono Output Mixer", }
+};
+
+static const struct snd_soc_dapm_route audio_paths_capless[] = {
+ { "HP_L", NULL, "OUT3 VMID" },
+ { "HP_R", NULL, "OUT3 VMID" },
+
+ { "OUT3 VMID", NULL, "Left Output Mixer" },
+ { "OUT3 VMID", NULL, "Right Output Mixer" },
+};
+
+static int wm8960_add_widgets(struct snd_soc_component *component)
+{
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ struct wm8960_data *pdata = &wm8960->pdata;
+ struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
+ struct snd_soc_dapm_widget *w;
+
+ snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
+ ARRAY_SIZE(wm8960_dapm_widgets));
+
+ snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
+
+ /* In capless mode OUT3 is used to provide VMID for the
+ * headphone outputs, otherwise it is used as a mono mixer.
+ */
+ if (pdata && pdata->capless) {
+ snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
+ ARRAY_SIZE(wm8960_dapm_widgets_capless));
+
+ snd_soc_dapm_add_routes(dapm, audio_paths_capless,
+ ARRAY_SIZE(audio_paths_capless));
+ } else {
+ snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
+ ARRAY_SIZE(wm8960_dapm_widgets_out3));
+
+ snd_soc_dapm_add_routes(dapm, audio_paths_out3,
+ ARRAY_SIZE(audio_paths_out3));
+ }
+
+ /* We need to power up the headphone output stage out of
+ * sequence for capless mode. To save scanning the widget
+ * list each time to find the desired power state do so now
+ * and save the result.
+ */
+ list_for_each_entry(w, &component->card->widgets, list) {
+ if (w->dapm != dapm)
+ continue;
+ if (strcmp(w->name, "LOUT1 PGA") == 0)
+ wm8960->lout1 = w;
+ if (strcmp(w->name, "ROUT1 PGA") == 0)
+ wm8960->rout1 = w;
+ if (strcmp(w->name, "OUT3 VMID") == 0)
+ wm8960->out3 = w;
+ }
+
+ return 0;
+}
+
+static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_component *component = codec_dai->component;
+ u16 iface = 0;
+
+ /* set master/slave audio interface */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ iface |= 0x0040;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ iface |= 0x0002;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ iface |= 0x0001;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ iface |= 0x0003;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ iface |= 0x0013;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* clock inversion */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ iface |= 0x0090;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ iface |= 0x0080;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ iface |= 0x0010;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* set iface */
+ snd_soc_component_write(component, WM8960_IFACE1, iface);
+ return 0;
+}
+
+static struct {
+ int rate;
+ unsigned int val;
+} alc_rates[] = {
+ { 48000, 0 },
+ { 44100, 0 },
+ { 32000, 1 },
+ { 22050, 2 },
+ { 24000, 2 },
+ { 16000, 3 },
+ { 11025, 4 },
+ { 12000, 4 },
+ { 8000, 5 },
+};
+
+/* -1 for reserved value */
+static const int sysclk_divs[] = { 1, -1, 2, -1 };
+
+/* Multiply 256 for internal 256 div */
+static const int dac_divs[] = { 256, 384, 512, 768, 1024, 1408, 1536 };
+
+/* Multiply 10 to eliminate decimials */
+static const int bclk_divs[] = {
+ 10, 15, 20, 30, 40, 55, 60, 80, 110,
+ 120, 160, 220, 240, 320, 320, 320
+};
+
+/**
+ * wm8960_configure_sysclk - checks if there is a sysclk frequency available
+ * The sysclk must be chosen such that:
+ * - sysclk = MCLK / sysclk_divs
+ * - lrclk = sysclk / dac_divs
+ * - 10 * bclk = sysclk / bclk_divs
+ *
+ * @wm8960: codec private data
+ * @mclk: MCLK used to derive sysclk
+ * @sysclk_idx: sysclk_divs index for found sysclk
+ * @dac_idx: dac_divs index for found lrclk
+ * @bclk_idx: bclk_divs index for found bclk
+ *
+ * Returns:
+ * -1, in case no sysclk frequency available found
+ * >=0, in case we could derive bclk and lrclk from sysclk using
+ * (@sysclk_idx, @dac_idx, @bclk_idx) dividers
+ */
+static
+int wm8960_configure_sysclk(struct wm8960_priv *wm8960, int mclk,
+ int *sysclk_idx, int *dac_idx, int *bclk_idx)
+{
+ int sysclk, bclk, lrclk;
+ int i, j, k;
+ int diff;
+
+ /* marker for no match */
+ *bclk_idx = -1;
+
+ bclk = wm8960->bclk;
+ lrclk = wm8960->lrclk;
+
+ /* check if the sysclk frequency is available. */
+ for (i = 0; i < ARRAY_SIZE(sysclk_divs); ++i) {
+ if (sysclk_divs[i] == -1)
+ continue;
+ sysclk = mclk / sysclk_divs[i];
+ for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) {
+ if (sysclk != dac_divs[j] * lrclk)
+ continue;
+ for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k) {
+ diff = sysclk - bclk * bclk_divs[k] / 10;
+ if (diff == 0) {
+ *sysclk_idx = i;
+ *dac_idx = j;
+ *bclk_idx = k;
+ break;
+ }
+ }
+ if (k != ARRAY_SIZE(bclk_divs))
+ break;
+ }
+ if (j != ARRAY_SIZE(dac_divs))
+ break;
+ }
+ return *bclk_idx;
+}
+
+/**
+ * wm8960_configure_pll - checks if there is a PLL out frequency available
+ * The PLL out frequency must be chosen such that:
+ * - sysclk = lrclk * dac_divs
+ * - freq_out = sysclk * sysclk_divs
+ * - 10 * sysclk = bclk * bclk_divs
+ *
+ * If we cannot find an exact match for (sysclk, lrclk, bclk)
+ * triplet, we relax the bclk such that bclk is chosen as the
+ * closest available frequency greater than expected bclk.
+ *
+ * @component: component structure
+ * @freq_in: input frequency used to derive freq out via PLL
+ * @sysclk_idx: sysclk_divs index for found sysclk
+ * @dac_idx: dac_divs index for found lrclk
+ * @bclk_idx: bclk_divs index for found bclk
+ *
+ * Returns:
+ * < 0, in case no PLL frequency out available was found
+ * >=0, in case we could derive bclk, lrclk, sysclk from PLL out using
+ * (@sysclk_idx, @dac_idx, @bclk_idx) dividers
+ */
+static
+int wm8960_configure_pll(struct snd_soc_component *component, int freq_in,
+ int *sysclk_idx, int *dac_idx, int *bclk_idx)
+{
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ int sysclk, bclk, lrclk, freq_out;
+ int diff, closest, best_freq_out;
+ int i, j, k;
+
+ bclk = wm8960->bclk;
+ lrclk = wm8960->lrclk;
+ closest = freq_in;
+
+ best_freq_out = -EINVAL;
+ *sysclk_idx = *dac_idx = *bclk_idx = -1;
+
+ /*
+ * From Datasheet, the PLL performs best when f2 is between
+ * 90MHz and 100MHz, the desired sysclk output is 11.2896MHz
+ * or 12.288MHz, then sysclkdiv = 2 is the best choice.
+ * So search sysclk_divs from 2 to 1 other than from 1 to 2.
+ */
+ for (i = ARRAY_SIZE(sysclk_divs) - 1; i >= 0; --i) {
+ if (sysclk_divs[i] == -1)
+ continue;
+ for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) {
+ sysclk = lrclk * dac_divs[j];
+ freq_out = sysclk * sysclk_divs[i];
+
+ for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k) {
+ if (!is_pll_freq_available(freq_in, freq_out))
+ continue;
+
+ diff = sysclk - bclk * bclk_divs[k] / 10;
+ if (diff == 0) {
+ *sysclk_idx = i;
+ *dac_idx = j;
+ *bclk_idx = k;
+ return freq_out;
+ }
+ if (diff > 0 && closest > diff) {
+ *sysclk_idx = i;
+ *dac_idx = j;
+ *bclk_idx = k;
+ closest = diff;
+ best_freq_out = freq_out;
+ }
+ }
+ }
+ }
+
+ return best_freq_out;
+}
+static int wm8960_configure_clocking(struct snd_soc_component *component)
+{
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ int freq_out, freq_in;
+ u16 iface1 = snd_soc_component_read(component, WM8960_IFACE1);
+ int i, j, k;
+ int ret;
+
+ /*
+ * For Slave mode clocking should still be configured,
+ * so this if statement should be removed, but some platform
+ * may not work if the sysclk is not configured, to avoid such
+ * compatible issue, just add '!wm8960->sysclk' condition in
+ * this if statement.
+ */
+ if (!(iface1 & (1 << 6)) && !wm8960->sysclk) {
+ dev_warn(component->dev,
+ "slave mode, but proceeding with no clock configuration\n");
+ return 0;
+ }
+
+ if (wm8960->clk_id != WM8960_SYSCLK_MCLK && !wm8960->freq_in) {
+ dev_err(component->dev, "No MCLK configured\n");
+ return -EINVAL;
+ }
+
+ freq_in = wm8960->freq_in;
+ /*
+ * If it's sysclk auto mode, check if the MCLK can provide sysclk or
+ * not. If MCLK can provide sysclk, using MCLK to provide sysclk
+ * directly. Otherwise, auto select a available pll out frequency
+ * and set PLL.
+ */
+ if (wm8960->clk_id == WM8960_SYSCLK_AUTO) {
+ /* disable the PLL and using MCLK to provide sysclk */
+ wm8960_set_pll(component, 0, 0);
+ freq_out = freq_in;
+ } else if (wm8960->sysclk) {
+ freq_out = wm8960->sysclk;
+ } else {
+ dev_err(component->dev, "No SYSCLK configured\n");
+ return -EINVAL;
+ }
+
+ if (wm8960->clk_id != WM8960_SYSCLK_PLL) {
+ ret = wm8960_configure_sysclk(wm8960, freq_out, &i, &j, &k);
+ if (ret >= 0) {
+ goto configure_clock;
+ } else if (wm8960->clk_id != WM8960_SYSCLK_AUTO) {
+ dev_err(component->dev, "failed to configure clock\n");
+ return -EINVAL;
+ }
+ }
+
+ freq_out = wm8960_configure_pll(component, freq_in, &i, &j, &k);
+ if (freq_out < 0) {
+ dev_err(component->dev, "failed to configure clock via PLL\n");
+ return freq_out;
+ }
+ wm8960_set_pll(component, freq_in, freq_out);
+
+configure_clock:
+ /* configure sysclk clock */
+ snd_soc_component_update_bits(component, WM8960_CLOCK1, 3 << 1, i << 1);
+
+ /* configure frame clock */
+ snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 3, j << 3);
+ snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x7 << 6, j << 6);
+
+ /* configure bit clock */
+ snd_soc_component_update_bits(component, WM8960_CLOCK2, 0xf, k);
+
+ return 0;
+}
+
+static int wm8960_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ u16 iface = snd_soc_component_read(component, WM8960_IFACE1) & 0xfff3;
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ int i;
+
+ wm8960->bclk = snd_soc_params_to_bclk(params);
+ if (params_channels(params) == 1)
+ wm8960->bclk *= 2;
+
+ /* bit size */
+ switch (params_width(params)) {
+ case 16:
+ break;
+ case 20:
+ iface |= 0x0004;
+ break;
+ case 24:
+ iface |= 0x0008;
+ break;
+ case 32:
+ /* right justify mode does not support 32 word length */
+ if ((iface & 0x3) != 0) {
+ iface |= 0x000c;
+ break;
+ }
+ fallthrough;
+ default:
+ dev_err(component->dev, "unsupported width %d\n",
+ params_width(params));
+ return -EINVAL;
+ }
+
+ wm8960->lrclk = params_rate(params);
+ /* Update filters for the new rate */
+ if (tx) {
+ wm8960_set_deemph(component);
+ } else {
+ for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
+ if (alc_rates[i].rate == params_rate(params))
+ snd_soc_component_update_bits(component,
+ WM8960_ADDCTL3, 0x7,
+ alc_rates[i].val);
+ }
+
+ /* set iface */
+ snd_soc_component_write(component, WM8960_IFACE1, iface);
+
+ wm8960->is_stream_in_use[tx] = true;
+
+ if (!wm8960->is_stream_in_use[!tx])
+ return wm8960_configure_clocking(component);
+
+ return 0;
+}
+
+static int wm8960_hw_free(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+
+ wm8960->is_stream_in_use[tx] = false;
+
+ return 0;
+}
+
+static int wm8960_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+
+ if (mute)
+ snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0x8);
+ else
+ snd_soc_component_update_bits(component, WM8960_DACCTL1, 0x8, 0);
+ return 0;
+}
+
+static int wm8960_set_bias_level_out3(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ u16 pm2 = snd_soc_component_read(component, WM8960_POWER2);
+ int ret;
+ ktime_t tout;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ switch (snd_soc_component_get_bias_level(component)) {
+ case SND_SOC_BIAS_STANDBY:
+ if (!IS_ERR(wm8960->mclk)) {
+ ret = clk_prepare_enable(wm8960->mclk);
+ if (ret) {
+ dev_err(component->dev,
+ "Failed to enable MCLK: %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ ret = wm8960_configure_clocking(component);
+ if (ret)
+ return ret;
+
+ /* Set VMID to 2x50k */
+ snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x80);
+ break;
+
+ case SND_SOC_BIAS_ON:
+ /*
+ * If it's sysclk auto mode, and the pll is enabled,
+ * disable the pll
+ */
+ if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1))
+ wm8960_set_pll(component, 0, 0);
+
+ if (!IS_ERR(wm8960->mclk))
+ clk_disable_unprepare(wm8960->mclk);
+ break;
+
+ default:
+ break;
+ }
+
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
+ /* ensure discharge is complete */
+ tout = WM8960_DSCH_TOUT - ktime_ms_delta(ktime_get(), wm8960->dsch_start);
+ if (tout > 0)
+ msleep(tout);
+
+ regcache_sync(wm8960->regmap);
+
+ /* Enable anti-pop features */
+ snd_soc_component_write(component, WM8960_APOP1,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN | WM8960_BUFIOEN);
+
+ /* Enable & ramp VMID at 2x50k */
+ snd_soc_component_update_bits(component, WM8960_POWER1, 0x80, 0x80);
+ msleep(100);
+
+ /* Enable VREF */
+ snd_soc_component_update_bits(component, WM8960_POWER1, WM8960_VREF,
+ WM8960_VREF);
+
+ /* Disable anti-pop features */
+ snd_soc_component_write(component, WM8960_APOP1, WM8960_BUFIOEN);
+ }
+
+ /* Set VMID to 2x250k */
+ snd_soc_component_update_bits(component, WM8960_POWER1, 0x180, 0x100);
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ /* Enable anti-pop features */
+ snd_soc_component_write(component, WM8960_APOP1,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN | WM8960_BUFIOEN);
+
+ /* Disable VMID and VREF, mark discharge */
+ snd_soc_component_write(component, WM8960_POWER1, 0);
+ wm8960->dsch_start = ktime_get();
+ break;
+ }
+
+ return 0;
+}
+
+static int wm8960_set_bias_level_capless(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ u16 pm2 = snd_soc_component_read(component, WM8960_POWER2);
+ int reg, ret;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ switch (snd_soc_component_get_bias_level(component)) {
+ case SND_SOC_BIAS_STANDBY:
+ /* Enable anti pop mode */
+ snd_soc_component_update_bits(component, WM8960_APOP1,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN);
+
+ /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
+ reg = 0;
+ if (wm8960->lout1 && wm8960->lout1->power)
+ reg |= WM8960_PWR2_LOUT1;
+ if (wm8960->rout1 && wm8960->rout1->power)
+ reg |= WM8960_PWR2_ROUT1;
+ if (wm8960->out3 && wm8960->out3->power)
+ reg |= WM8960_PWR2_OUT3;
+ snd_soc_component_update_bits(component, WM8960_POWER2,
+ WM8960_PWR2_LOUT1 |
+ WM8960_PWR2_ROUT1 |
+ WM8960_PWR2_OUT3, reg);
+
+ /* Enable VMID at 2*50k */
+ snd_soc_component_update_bits(component, WM8960_POWER1,
+ WM8960_VMID_MASK, 0x80);
+
+ /* Ramp */
+ msleep(100);
+
+ /* Enable VREF */
+ snd_soc_component_update_bits(component, WM8960_POWER1,
+ WM8960_VREF, WM8960_VREF);
+
+ msleep(100);
+
+ if (!IS_ERR(wm8960->mclk)) {
+ ret = clk_prepare_enable(wm8960->mclk);
+ if (ret) {
+ dev_err(component->dev,
+ "Failed to enable MCLK: %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ ret = wm8960_configure_clocking(component);
+ if (ret)
+ return ret;
+
+ break;
+
+ case SND_SOC_BIAS_ON:
+ /*
+ * If it's sysclk auto mode, and the pll is enabled,
+ * disable the pll
+ */
+ if (wm8960->clk_id == WM8960_SYSCLK_AUTO && (pm2 & 0x1))
+ wm8960_set_pll(component, 0, 0);
+
+ if (!IS_ERR(wm8960->mclk))
+ clk_disable_unprepare(wm8960->mclk);
+
+ /* Enable anti-pop mode */
+ snd_soc_component_update_bits(component, WM8960_APOP1,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN);
+
+ /* Disable VMID and VREF */
+ snd_soc_component_update_bits(component, WM8960_POWER1,
+ WM8960_VREF | WM8960_VMID_MASK, 0);
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ regcache_sync(wm8960->regmap);
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ switch (snd_soc_component_get_bias_level(component)) {
+ case SND_SOC_BIAS_PREPARE:
+ /* Disable HP discharge */
+ snd_soc_component_update_bits(component, WM8960_APOP2,
+ WM8960_DISOP | WM8960_DRES_MASK,
+ 0);
+
+ /* Disable anti-pop features */
+ snd_soc_component_update_bits(component, WM8960_APOP1,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN,
+ WM8960_POBCTRL | WM8960_SOFT_ST |
+ WM8960_BUFDCOPEN);
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ break;
+ }
+
+ return 0;
+}
+
+/* PLL divisors */
+struct _pll_div {
+ u32 pre_div:1;
+ u32 n:4;
+ u32 k:24;
+};
+
+static bool is_pll_freq_available(unsigned int source, unsigned int target)
+{
+ unsigned int Ndiv;
+
+ if (source == 0 || target == 0)
+ return false;
+
+ /* Scale up target to PLL operating frequency */
+ target *= 4;
+ Ndiv = target / source;
+
+ if (Ndiv < 6) {
+ source >>= 1;
+ Ndiv = target / source;
+ }
+
+ if ((Ndiv < 6) || (Ndiv > 12))
+ return false;
+
+ return true;
+}
+
+/* The size in bits of the pll divide multiplied by 10
+ * to allow rounding later */
+#define FIXED_PLL_SIZE ((1 << 24) * 10)
+
+static int pll_factors(unsigned int source, unsigned int target,
+ struct _pll_div *pll_div)
+{
+ unsigned long long Kpart;
+ unsigned int K, Ndiv, Nmod;
+
+ pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
+
+ /* Scale up target to PLL operating frequency */
+ target *= 4;
+
+ Ndiv = target / source;
+ if (Ndiv < 6) {
+ source >>= 1;
+ pll_div->pre_div = 1;
+ Ndiv = target / source;
+ } else
+ pll_div->pre_div = 0;
+
+ if ((Ndiv < 6) || (Ndiv > 12)) {
+ pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
+ return -EINVAL;
+ }
+
+ pll_div->n = Ndiv;
+ Nmod = target % source;
+ Kpart = FIXED_PLL_SIZE * (long long)Nmod;
+
+ do_div(Kpart, source);
+
+ K = Kpart & 0xFFFFFFFF;
+
+ /* Check if we need to round */
+ if ((K % 10) >= 5)
+ K += 5;
+
+ /* Move down to proper range now rounding is done */
+ K /= 10;
+
+ pll_div->k = K;
+
+ pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
+ pll_div->n, pll_div->k, pll_div->pre_div);
+
+ return 0;
+}
+
+static int wm8960_set_pll(struct snd_soc_component *component,
+ unsigned int freq_in, unsigned int freq_out)
+{
+ u16 reg;
+ static struct _pll_div pll_div;
+ int ret;
+
+ if (freq_in && freq_out) {
+ ret = pll_factors(freq_in, freq_out, &pll_div);
+ if (ret != 0)
+ return ret;
+ }
+
+ /* Disable the PLL: even if we are changing the frequency the
+ * PLL needs to be disabled while we do so. */
+ snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0);
+ snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0);
+
+ if (!freq_in || !freq_out)
+ return 0;
+
+ reg = snd_soc_component_read(component, WM8960_PLL1) & ~0x3f;
+ reg |= pll_div.pre_div << 4;
+ reg |= pll_div.n;
+
+ if (pll_div.k) {
+ reg |= 0x20;
+
+ snd_soc_component_write(component, WM8960_PLL2, (pll_div.k >> 16) & 0xff);
+ snd_soc_component_write(component, WM8960_PLL3, (pll_div.k >> 8) & 0xff);
+ snd_soc_component_write(component, WM8960_PLL4, pll_div.k & 0xff);
+ }
+ snd_soc_component_write(component, WM8960_PLL1, reg);
+
+ /* Turn it on */
+ snd_soc_component_update_bits(component, WM8960_POWER2, 0x1, 0x1);
+ msleep(250);
+ snd_soc_component_update_bits(component, WM8960_CLOCK1, 0x1, 0x1);
+
+ return 0;
+}
+
+static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
+ int source, unsigned int freq_in, unsigned int freq_out)
+{
+ struct snd_soc_component *component = codec_dai->component;
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+
+ wm8960->freq_in = freq_in;
+
+ if (pll_id == WM8960_SYSCLK_AUTO)
+ return 0;
+
+ return wm8960_set_pll(component, freq_in, freq_out);
+}
+
+static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
+ int div_id, int div)
+{
+ struct snd_soc_component *component = codec_dai->component;
+ u16 reg;
+
+ switch (div_id) {
+ case WM8960_SYSCLKDIV:
+ reg = snd_soc_component_read(component, WM8960_CLOCK1) & 0x1f9;
+ snd_soc_component_write(component, WM8960_CLOCK1, reg | div);
+ break;
+ case WM8960_DACDIV:
+ reg = snd_soc_component_read(component, WM8960_CLOCK1) & 0x1c7;
+ snd_soc_component_write(component, WM8960_CLOCK1, reg | div);
+ break;
+ case WM8960_OPCLKDIV:
+ reg = snd_soc_component_read(component, WM8960_PLL1) & 0x03f;
+ snd_soc_component_write(component, WM8960_PLL1, reg | div);
+ break;
+ case WM8960_DCLKDIV:
+ reg = snd_soc_component_read(component, WM8960_CLOCK2) & 0x03f;
+ snd_soc_component_write(component, WM8960_CLOCK2, reg | div);
+ break;
+ case WM8960_TOCLKSEL:
+ reg = snd_soc_component_read(component, WM8960_ADDCTL1) & 0x1fd;
+ snd_soc_component_write(component, WM8960_ADDCTL1, reg | div);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int wm8960_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+
+ return wm8960->set_bias_level(component, level);
+}
+
+static int wm8960_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct snd_soc_component *component = dai->component;
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+
+ switch (clk_id) {
+ case WM8960_SYSCLK_MCLK:
+ snd_soc_component_update_bits(component, WM8960_CLOCK1,
+ 0x1, WM8960_SYSCLK_MCLK);
+ break;
+ case WM8960_SYSCLK_PLL:
+ snd_soc_component_update_bits(component, WM8960_CLOCK1,
+ 0x1, WM8960_SYSCLK_PLL);
+ break;
+ case WM8960_SYSCLK_AUTO:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ wm8960->sysclk = freq;
+ wm8960->clk_id = clk_id;
+
+ return 0;
+}
+
+#define WM8960_RATES SNDRV_PCM_RATE_8000_48000
+
+#define WM8960_FORMATS \
+ (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+static const struct snd_soc_dai_ops wm8960_dai_ops = {
+ .hw_params = wm8960_hw_params,
+ .hw_free = wm8960_hw_free,
+ .mute_stream = wm8960_mute,
+ .set_fmt = wm8960_set_dai_fmt,
+ .set_clkdiv = wm8960_set_dai_clkdiv,
+ .set_pll = wm8960_set_dai_pll,
+ .set_sysclk = wm8960_set_dai_sysclk,
+ .no_capture_mute = 1,
+};
+
+static struct snd_soc_dai_driver wm8960_dai = {
+ .name = "wm8960-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8960_RATES,
+ .formats = WM8960_FORMATS,},
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8960_RATES,
+ .formats = WM8960_FORMATS,},
+ .ops = &wm8960_dai_ops,
+ .symmetric_rate = 1,
+};
+
+static int wm8960_probe(struct snd_soc_component *component)
+{
+ struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component);
+ struct wm8960_data *pdata = &wm8960->pdata;
+
+ if (pdata->capless)
+ wm8960->set_bias_level = wm8960_set_bias_level_capless;
+ else
+ wm8960->set_bias_level = wm8960_set_bias_level_out3;
+
+ snd_soc_add_component_controls(component, wm8960_snd_controls,
+ ARRAY_SIZE(wm8960_snd_controls));
+ wm8960_add_widgets(component);
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver soc_component_dev_wm8960 = {
+ .probe = wm8960_probe,
+ .set_bias_level = wm8960_set_bias_level,
+ .suspend_bias_off = 1,
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+static const struct regmap_config wm8960_regmap = {
+ .reg_bits = 7,
+ .val_bits = 9,
+ .max_register = WM8960_PLL4,
+
+ .reg_defaults = wm8960_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults),
+ .cache_type = REGCACHE_MAPLE,
+
+ .volatile_reg = wm8960_volatile,
+};
+
+static void wm8960_set_pdata_from_of(struct i2c_client *i2c,
+ struct wm8960_data *pdata)
+{
+ const struct device_node *np = i2c->dev.of_node;
+
+ if (of_property_read_bool(np, "wlf,capless"))
+ pdata->capless = true;
+
+ if (of_property_read_bool(np, "wlf,shared-lrclk"))
+ pdata->shared_lrclk = true;
+
+ of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_cfg,
+ ARRAY_SIZE(pdata->gpio_cfg));
+
+ of_property_read_u32_array(np, "wlf,hp-cfg", pdata->hp_cfg,
+ ARRAY_SIZE(pdata->hp_cfg));
+}
+
+static int wm8960_i2c_probe(struct i2c_client *i2c)
+{
+ struct wm8960_data *pdata = dev_get_platdata(&i2c->dev);
+ struct wm8960_priv *wm8960;
+ unsigned int i;
+ int ret;
+ u8 val;
+
+ wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv),
+ GFP_KERNEL);
+ if (wm8960 == NULL)
+ return -ENOMEM;
+
+ wm8960->mclk = devm_clk_get(&i2c->dev, "mclk");
+ if (IS_ERR(wm8960->mclk)) {
+ if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ } else {
+ ret = clk_get_rate(wm8960->mclk);
+ if (ret >= 0) {
+ wm8960->freq_in = ret;
+ } else {
+ dev_err(&i2c->dev, "Failed to read MCLK rate: %d\n",
+ ret);
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(wm8960->supplies); i++)
+ wm8960->supplies[i].supply = wm8960_supply_names[i];
+
+ ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8960->supplies),
+ wm8960->supplies);
+ if (ret < 0) {
+ dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
+ return ret;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(wm8960->supplies),
+ wm8960->supplies);
+ if (ret < 0) {
+ dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
+ return ret;
+ }
+
+ wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap);
+ if (IS_ERR(wm8960->regmap)) {
+ ret = PTR_ERR(wm8960->regmap);
+ goto bulk_disable;
+ }
+
+ if (pdata)
+ memcpy(&wm8960->pdata, pdata, sizeof(struct wm8960_data));
+ else if (i2c->dev.of_node)
+ wm8960_set_pdata_from_of(i2c, &wm8960->pdata);
+
+ ret = i2c_master_recv(i2c, &val, sizeof(val));
+ if (ret >= 0) {
+ dev_err(&i2c->dev, "Not wm8960, wm8960 reg can not read by i2c\n");
+ ret = -EINVAL;
+ goto bulk_disable;
+ }
+
+ ret = wm8960_reset(wm8960->regmap);
+ if (ret != 0) {
+ dev_err(&i2c->dev, "Failed to issue reset\n");
+ goto bulk_disable;
+ }
+
+ if (wm8960->pdata.shared_lrclk) {
+ ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2,
+ 0x4, 0x4);
+ if (ret != 0) {
+ dev_err(&i2c->dev, "Failed to enable LRCM: %d\n",
+ ret);
+ goto bulk_disable;
+ }
+ }
+
+ /* Latch the update bits */
+ regmap_update_bits(wm8960->regmap, WM8960_LINVOL, 0x100, 0x100);
+ regmap_update_bits(wm8960->regmap, WM8960_RINVOL, 0x100, 0x100);
+ regmap_update_bits(wm8960->regmap, WM8960_LADC, 0x100, 0x100);
+ regmap_update_bits(wm8960->regmap, WM8960_RADC, 0x100, 0x100);
+ regmap_update_bits(wm8960->regmap, WM8960_LDAC, 0x100, 0x100);
+ regmap_update_bits(wm8960->regmap, WM8960_RDAC, 0x100, 0x100);
+ regmap_update_bits(wm8960->regmap, WM8960_LOUT1, 0x100, 0x100);
+ regmap_update_bits(wm8960->regmap, WM8960_ROUT1, 0x100, 0x100);
+ regmap_update_bits(wm8960->regmap, WM8960_LOUT2, 0x100, 0x100);
+ regmap_update_bits(wm8960->regmap, WM8960_ROUT2, 0x100, 0x100);
+
+ /* ADCLRC pin configured as GPIO. */
+ regmap_update_bits(wm8960->regmap, WM8960_IFACE2, 1 << 6,
+ wm8960->pdata.gpio_cfg[0] << 6);
+ regmap_update_bits(wm8960->regmap, WM8960_ADDCTL4, 0xF << 4,
+ wm8960->pdata.gpio_cfg[1] << 4);
+
+ /* Enable headphone jack detect */
+ regmap_update_bits(wm8960->regmap, WM8960_ADDCTL4, 3 << 2,
+ wm8960->pdata.hp_cfg[0] << 2);
+ regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, 3 << 5,
+ wm8960->pdata.hp_cfg[1] << 5);
+ regmap_update_bits(wm8960->regmap, WM8960_ADDCTL1, 3,
+ wm8960->pdata.hp_cfg[2]);
+
+ i2c_set_clientdata(i2c, wm8960);
+
+ ret = devm_snd_soc_register_component(&i2c->dev,
+ &soc_component_dev_wm8960, &wm8960_dai, 1);
+ if (ret)
+ goto bulk_disable;
+
+ return 0;
+
+bulk_disable:
+ regulator_bulk_disable(ARRAY_SIZE(wm8960->supplies), wm8960->supplies);
+ return ret;
+}
+
+static void wm8960_i2c_remove(struct i2c_client *client)
+{
+ struct wm8960_priv *wm8960 = i2c_get_clientdata(client);
+
+ regulator_bulk_disable(ARRAY_SIZE(wm8960->supplies), wm8960->supplies);
+}
+
+static const struct i2c_device_id wm8960_i2c_id[] = {
+ { "wm8960", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
+
+#if defined(CONFIG_OF)
+static const struct of_device_id wm8960_of_match[] = {
+ { .compatible = "wlf,wm8960", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, wm8960_of_match);
+#endif
+
+#if defined(CONFIG_ACPI)
+static const struct acpi_device_id wm8960_acpi_match[] = {
+ { "1AEC8960", 0 }, /* Wolfson PCI ID + part ID */
+ { "10138960", 0 }, /* Cirrus Logic PCI ID + part ID */
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, wm8960_acpi_match);
+#endif
+
+static struct i2c_driver wm8960_i2c_driver = {
+ .driver = {
+ .name = "wm8960",
+ .of_match_table = of_match_ptr(wm8960_of_match),
+ .acpi_match_table = ACPI_PTR(wm8960_acpi_match),
+ },
+ .probe = wm8960_i2c_probe,
+ .remove = wm8960_i2c_remove,
+ .id_table = wm8960_i2c_id,
+};
+
+module_i2c_driver(wm8960_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC WM8960 driver");
+MODULE_AUTHOR("Liam Girdwood");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 10:30:05 +0000