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-rw-r--r--sound/soc/codecs/wm8988.c1010
1 files changed, 1010 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8988.c b/sound/soc/codecs/wm8988.c
new file mode 100644
index 00000000..6cdf6a2b
--- /dev/null
+++ b/sound/soc/codecs/wm8988.c
@@ -0,0 +1,1010 @@
+/*
+ * wm8988.c -- WM8988 ALSA SoC audio driver
+ *
+ * Copyright 2009 Wolfson Microelectronics plc
+ * Copyright 2005 Openedhand Ltd.
+ *
+ * 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/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/tlv.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+
+#include "wm8988.h"
+
+/*
+ * wm8988 register cache
+ * We can't read the WM8988 register space when we
+ * are using 2 wire for device control, so we cache them instead.
+ */
+static const struct reg_default wm8988_reg_defaults[] = {
+ { 0, 0x0097 },
+ { 1, 0x0097 },
+ { 2, 0x0079 },
+ { 3, 0x0079 },
+ { 5, 0x0008 },
+ { 7, 0x000a },
+ { 8, 0x0000 },
+ { 10, 0x00ff },
+ { 11, 0x00ff },
+ { 12, 0x000f },
+ { 13, 0x000f },
+ { 16, 0x0000 },
+ { 17, 0x007b },
+ { 18, 0x0000 },
+ { 19, 0x0032 },
+ { 20, 0x0000 },
+ { 21, 0x00c3 },
+ { 22, 0x00c3 },
+ { 23, 0x00c0 },
+ { 24, 0x0000 },
+ { 25, 0x0000 },
+ { 26, 0x0000 },
+ { 27, 0x0000 },
+ { 31, 0x0000 },
+ { 32, 0x0000 },
+ { 33, 0x0000 },
+ { 34, 0x0050 },
+ { 35, 0x0050 },
+ { 36, 0x0050 },
+ { 37, 0x0050 },
+ { 40, 0x0079 },
+ { 41, 0x0079 },
+ { 42, 0x0079 },
+};
+
+static bool wm8988_writeable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case WM8988_LINVOL:
+ case WM8988_RINVOL:
+ case WM8988_LOUT1V:
+ case WM8988_ROUT1V:
+ case WM8988_ADCDAC:
+ case WM8988_IFACE:
+ case WM8988_SRATE:
+ case WM8988_LDAC:
+ case WM8988_RDAC:
+ case WM8988_BASS:
+ case WM8988_TREBLE:
+ case WM8988_RESET:
+ case WM8988_3D:
+ case WM8988_ALC1:
+ case WM8988_ALC2:
+ case WM8988_ALC3:
+ case WM8988_NGATE:
+ case WM8988_LADC:
+ case WM8988_RADC:
+ case WM8988_ADCTL1:
+ case WM8988_ADCTL2:
+ case WM8988_PWR1:
+ case WM8988_PWR2:
+ case WM8988_ADCTL3:
+ case WM8988_ADCIN:
+ case WM8988_LADCIN:
+ case WM8988_RADCIN:
+ case WM8988_LOUTM1:
+ case WM8988_LOUTM2:
+ case WM8988_ROUTM1:
+ case WM8988_ROUTM2:
+ case WM8988_LOUT2V:
+ case WM8988_ROUT2V:
+ case WM8988_LPPB:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/* codec private data */
+struct wm8988_priv {
+ struct regmap *regmap;
+ unsigned int sysclk;
+ struct snd_pcm_hw_constraint_list *sysclk_constraints;
+};
+
+#define wm8988_reset(c) snd_soc_write(c, WM8988_RESET, 0)
+
+/*
+ * WM8988 Controls
+ */
+
+static const char *bass_boost_txt[] = {"Linear Control", "Adaptive Boost"};
+static const struct soc_enum bass_boost =
+ SOC_ENUM_SINGLE(WM8988_BASS, 7, 2, bass_boost_txt);
+
+static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
+static const struct soc_enum bass_filter =
+ SOC_ENUM_SINGLE(WM8988_BASS, 6, 2, bass_filter_txt);
+
+static const char *treble_txt[] = {"8kHz", "4kHz"};
+static const struct soc_enum treble =
+ SOC_ENUM_SINGLE(WM8988_TREBLE, 6, 2, treble_txt);
+
+static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"};
+static const struct soc_enum stereo_3d_lc =
+ SOC_ENUM_SINGLE(WM8988_3D, 5, 2, stereo_3d_lc_txt);
+
+static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"};
+static const struct soc_enum stereo_3d_uc =
+ SOC_ENUM_SINGLE(WM8988_3D, 6, 2, stereo_3d_uc_txt);
+
+static const char *stereo_3d_func_txt[] = {"Capture", "Playback"};
+static const struct soc_enum stereo_3d_func =
+ SOC_ENUM_SINGLE(WM8988_3D, 7, 2, stereo_3d_func_txt);
+
+static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"};
+static const struct soc_enum alc_func =
+ SOC_ENUM_SINGLE(WM8988_ALC1, 7, 4, alc_func_txt);
+
+static const char *ng_type_txt[] = {"Constant PGA Gain",
+ "Mute ADC Output"};
+static const struct soc_enum ng_type =
+ SOC_ENUM_SINGLE(WM8988_NGATE, 1, 2, ng_type_txt);
+
+static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"};
+static const struct soc_enum deemph =
+ SOC_ENUM_SINGLE(WM8988_ADCDAC, 1, 4, deemph_txt);
+
+static const char *adcpol_txt[] = {"Normal", "L Invert", "R Invert",
+ "L + R Invert"};
+static const struct soc_enum adcpol =
+ SOC_ENUM_SINGLE(WM8988_ADCDAC, 5, 4, adcpol_txt);
+
+static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0);
+static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
+static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
+static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
+static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
+
+static const struct snd_kcontrol_new wm8988_snd_controls[] = {
+
+SOC_ENUM("Bass Boost", bass_boost),
+SOC_ENUM("Bass Filter", bass_filter),
+SOC_SINGLE("Bass Volume", WM8988_BASS, 0, 15, 1),
+
+SOC_SINGLE("Treble Volume", WM8988_TREBLE, 0, 15, 0),
+SOC_ENUM("Treble Cut-off", treble),
+
+SOC_SINGLE("3D Switch", WM8988_3D, 0, 1, 0),
+SOC_SINGLE("3D Volume", WM8988_3D, 1, 15, 0),
+SOC_ENUM("3D Lower Cut-off", stereo_3d_lc),
+SOC_ENUM("3D Upper Cut-off", stereo_3d_uc),
+SOC_ENUM("3D Mode", stereo_3d_func),
+
+SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1, 0, 7, 0),
+SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1, 4, 7, 0),
+SOC_ENUM("ALC Capture Function", alc_func),
+SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2, 7, 1, 0),
+SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2, 0, 15, 0),
+SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3, 4, 15, 0),
+SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3, 0, 15, 0),
+SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE, 3, 31, 0),
+SOC_ENUM("ALC Capture NG Type", ng_type),
+SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE, 0, 1, 0),
+
+SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1, 0, 1, 0),
+
+SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC, WM8988_RADC,
+ 0, 255, 0, adc_tlv),
+SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL, WM8988_RINVOL,
+ 0, 63, 0, pga_tlv),
+SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL, WM8988_RINVOL, 6, 1, 0),
+SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL, WM8988_RINVOL, 7, 1, 1),
+
+SOC_ENUM("Playback De-emphasis", deemph),
+
+SOC_ENUM("Capture Polarity", adcpol),
+SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC, 7, 1, 0),
+SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC, 8, 1, 0),
+
+SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC, WM8988_RDAC, 0, 255, 0, dac_tlv),
+
+SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1, 4, 7, 1,
+ bypass_tlv),
+SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2, 4, 7, 1,
+ bypass_tlv),
+SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1, 4, 7, 1,
+ bypass_tlv),
+SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2, 4, 7, 1,
+ bypass_tlv),
+
+SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V,
+ WM8988_ROUT1V, 7, 1, 0),
+SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V, WM8988_ROUT1V,
+ 0, 127, 0, out_tlv),
+
+SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V,
+ WM8988_ROUT2V, 7, 1, 0),
+SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V, WM8988_ROUT2V,
+ 0, 127, 0, out_tlv),
+
+};
+
+/*
+ * DAPM Controls
+ */
+
+static int wm8988_lrc_control(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_codec *codec = w->codec;
+ u16 adctl2 = snd_soc_read(codec, WM8988_ADCTL2);
+
+ /* Use the DAC to gate LRC if active, otherwise use ADC */
+ if (snd_soc_read(codec, WM8988_PWR2) & 0x180)
+ adctl2 &= ~0x4;
+ else
+ adctl2 |= 0x4;
+
+ return snd_soc_write(codec, WM8988_ADCTL2, adctl2);
+}
+
+static const char *wm8988_line_texts[] = {
+ "Line 1", "Line 2", "PGA", "Differential"};
+
+static const unsigned int wm8988_line_values[] = {
+ 0, 1, 3, 4};
+
+static const struct soc_enum wm8988_lline_enum =
+ SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1, 0, 7,
+ ARRAY_SIZE(wm8988_line_texts),
+ wm8988_line_texts,
+ wm8988_line_values);
+static const struct snd_kcontrol_new wm8988_left_line_controls =
+ SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
+
+static const struct soc_enum wm8988_rline_enum =
+ SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1, 0, 7,
+ ARRAY_SIZE(wm8988_line_texts),
+ wm8988_line_texts,
+ wm8988_line_values);
+static const struct snd_kcontrol_new wm8988_right_line_controls =
+ SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
+
+/* Left Mixer */
+static const struct snd_kcontrol_new wm8988_left_mixer_controls[] = {
+ SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1, 8, 1, 0),
+ SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1, 7, 1, 0),
+ SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2, 8, 1, 0),
+ SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2, 7, 1, 0),
+};
+
+/* Right Mixer */
+static const struct snd_kcontrol_new wm8988_right_mixer_controls[] = {
+ SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1, 8, 1, 0),
+ SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1, 7, 1, 0),
+ SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2, 8, 1, 0),
+ SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2, 7, 1, 0),
+};
+
+static const char *wm8988_pga_sel[] = {"Line 1", "Line 2", "Differential"};
+static const unsigned int wm8988_pga_val[] = { 0, 1, 3 };
+
+/* Left PGA Mux */
+static const struct soc_enum wm8988_lpga_enum =
+ SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN, 6, 3,
+ ARRAY_SIZE(wm8988_pga_sel),
+ wm8988_pga_sel,
+ wm8988_pga_val);
+static const struct snd_kcontrol_new wm8988_left_pga_controls =
+ SOC_DAPM_VALUE_ENUM("Route", wm8988_lpga_enum);
+
+/* Right PGA Mux */
+static const struct soc_enum wm8988_rpga_enum =
+ SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN, 6, 3,
+ ARRAY_SIZE(wm8988_pga_sel),
+ wm8988_pga_sel,
+ wm8988_pga_val);
+static const struct snd_kcontrol_new wm8988_right_pga_controls =
+ SOC_DAPM_VALUE_ENUM("Route", wm8988_rpga_enum);
+
+/* Differential Mux */
+static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"};
+static const struct soc_enum diffmux =
+ SOC_ENUM_SINGLE(WM8988_ADCIN, 8, 2, wm8988_diff_sel);
+static const struct snd_kcontrol_new wm8988_diffmux_controls =
+ SOC_DAPM_ENUM("Route", diffmux);
+
+/* Mono ADC Mux */
+static const char *wm8988_mono_mux[] = {"Stereo", "Mono (Left)",
+ "Mono (Right)", "Digital Mono"};
+static const struct soc_enum monomux =
+ SOC_ENUM_SINGLE(WM8988_ADCIN, 6, 4, wm8988_mono_mux);
+static const struct snd_kcontrol_new wm8988_monomux_controls =
+ SOC_DAPM_ENUM("Route", monomux);
+
+static const struct snd_soc_dapm_widget wm8988_dapm_widgets[] = {
+ SND_SOC_DAPM_SUPPLY("Mic Bias", WM8988_PWR1, 1, 0, NULL, 0),
+
+ SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
+ &wm8988_diffmux_controls),
+ SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
+ &wm8988_monomux_controls),
+ SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
+ &wm8988_monomux_controls),
+
+ SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1, 5, 0,
+ &wm8988_left_pga_controls),
+ SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1, 4, 0,
+ &wm8988_right_pga_controls),
+
+ SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
+ &wm8988_left_line_controls),
+ SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
+ &wm8988_right_line_controls),
+
+ SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1, 2, 0),
+ SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1, 3, 0),
+
+ SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2, 7, 0),
+ SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2, 8, 0),
+
+ SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
+ &wm8988_left_mixer_controls[0],
+ ARRAY_SIZE(wm8988_left_mixer_controls)),
+ SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
+ &wm8988_right_mixer_controls[0],
+ ARRAY_SIZE(wm8988_right_mixer_controls)),
+
+ SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2, 3, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2, 4, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2, 5, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2, 6, 0, NULL, 0),
+
+ SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control),
+
+ SND_SOC_DAPM_OUTPUT("LOUT1"),
+ SND_SOC_DAPM_OUTPUT("ROUT1"),
+ SND_SOC_DAPM_OUTPUT("LOUT2"),
+ SND_SOC_DAPM_OUTPUT("ROUT2"),
+ SND_SOC_DAPM_OUTPUT("VREF"),
+
+ SND_SOC_DAPM_INPUT("LINPUT1"),
+ SND_SOC_DAPM_INPUT("LINPUT2"),
+ SND_SOC_DAPM_INPUT("RINPUT1"),
+ SND_SOC_DAPM_INPUT("RINPUT2"),
+};
+
+static const struct snd_soc_dapm_route wm8988_dapm_routes[] = {
+
+ { "Left Line Mux", "Line 1", "LINPUT1" },
+ { "Left Line Mux", "Line 2", "LINPUT2" },
+ { "Left Line Mux", "PGA", "Left PGA Mux" },
+ { "Left Line Mux", "Differential", "Differential Mux" },
+
+ { "Right Line Mux", "Line 1", "RINPUT1" },
+ { "Right Line Mux", "Line 2", "RINPUT2" },
+ { "Right Line Mux", "PGA", "Right PGA Mux" },
+ { "Right Line Mux", "Differential", "Differential Mux" },
+
+ { "Left PGA Mux", "Line 1", "LINPUT1" },
+ { "Left PGA Mux", "Line 2", "LINPUT2" },
+ { "Left PGA Mux", "Differential", "Differential Mux" },
+
+ { "Right PGA Mux", "Line 1", "RINPUT1" },
+ { "Right PGA Mux", "Line 2", "RINPUT2" },
+ { "Right PGA Mux", "Differential", "Differential Mux" },
+
+ { "Differential Mux", "Line 1", "LINPUT1" },
+ { "Differential Mux", "Line 1", "RINPUT1" },
+ { "Differential Mux", "Line 2", "LINPUT2" },
+ { "Differential Mux", "Line 2", "RINPUT2" },
+
+ { "Left ADC Mux", "Stereo", "Left PGA Mux" },
+ { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" },
+ { "Left ADC Mux", "Digital Mono", "Left PGA Mux" },
+
+ { "Right ADC Mux", "Stereo", "Right PGA Mux" },
+ { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" },
+ { "Right ADC Mux", "Digital Mono", "Right PGA Mux" },
+
+ { "Left ADC", NULL, "Left ADC Mux" },
+ { "Right ADC", NULL, "Right ADC Mux" },
+
+ { "Left Line Mux", "Line 1", "LINPUT1" },
+ { "Left Line Mux", "Line 2", "LINPUT2" },
+ { "Left Line Mux", "PGA", "Left PGA Mux" },
+ { "Left Line Mux", "Differential", "Differential Mux" },
+
+ { "Right Line Mux", "Line 1", "RINPUT1" },
+ { "Right Line Mux", "Line 2", "RINPUT2" },
+ { "Right Line Mux", "PGA", "Right PGA Mux" },
+ { "Right Line Mux", "Differential", "Differential Mux" },
+
+ { "Left Mixer", "Playback Switch", "Left DAC" },
+ { "Left Mixer", "Left Bypass Switch", "Left Line Mux" },
+ { "Left Mixer", "Right Playback Switch", "Right DAC" },
+ { "Left Mixer", "Right Bypass Switch", "Right Line Mux" },
+
+ { "Right Mixer", "Left Playback Switch", "Left DAC" },
+ { "Right Mixer", "Left Bypass Switch", "Left Line Mux" },
+ { "Right Mixer", "Playback Switch", "Right DAC" },
+ { "Right Mixer", "Right Bypass Switch", "Right Line Mux" },
+
+ { "Left Out 1", NULL, "Left Mixer" },
+ { "LOUT1", NULL, "Left Out 1" },
+ { "Right Out 1", NULL, "Right Mixer" },
+ { "ROUT1", NULL, "Right Out 1" },
+
+ { "Left Out 2", NULL, "Left Mixer" },
+ { "LOUT2", NULL, "Left Out 2" },
+ { "Right Out 2", NULL, "Right Mixer" },
+ { "ROUT2", NULL, "Right Out 2" },
+};
+
+struct _coeff_div {
+ u32 mclk;
+ u32 rate;
+ u16 fs;
+ u8 sr:5;
+ u8 usb:1;
+};
+
+/* codec hifi mclk clock divider coefficients */
+static const struct _coeff_div coeff_div[] = {
+ /* 8k */
+ {12288000, 8000, 1536, 0x6, 0x0},
+ {11289600, 8000, 1408, 0x16, 0x0},
+ {18432000, 8000, 2304, 0x7, 0x0},
+ {16934400, 8000, 2112, 0x17, 0x0},
+ {12000000, 8000, 1500, 0x6, 0x1},
+
+ /* 11.025k */
+ {11289600, 11025, 1024, 0x18, 0x0},
+ {16934400, 11025, 1536, 0x19, 0x0},
+ {12000000, 11025, 1088, 0x19, 0x1},
+
+ /* 16k */
+ {12288000, 16000, 768, 0xa, 0x0},
+ {18432000, 16000, 1152, 0xb, 0x0},
+ {12000000, 16000, 750, 0xa, 0x1},
+
+ /* 22.05k */
+ {11289600, 22050, 512, 0x1a, 0x0},
+ {16934400, 22050, 768, 0x1b, 0x0},
+ {12000000, 22050, 544, 0x1b, 0x1},
+
+ /* 32k */
+ {12288000, 32000, 384, 0xc, 0x0},
+ {18432000, 32000, 576, 0xd, 0x0},
+ {12000000, 32000, 375, 0xa, 0x1},
+
+ /* 44.1k */
+ {11289600, 44100, 256, 0x10, 0x0},
+ {16934400, 44100, 384, 0x11, 0x0},
+ {12000000, 44100, 272, 0x11, 0x1},
+
+ /* 48k */
+ {12288000, 48000, 256, 0x0, 0x0},
+ {18432000, 48000, 384, 0x1, 0x0},
+ {12000000, 48000, 250, 0x0, 0x1},
+
+ /* 88.2k */
+ {11289600, 88200, 128, 0x1e, 0x0},
+ {16934400, 88200, 192, 0x1f, 0x0},
+ {12000000, 88200, 136, 0x1f, 0x1},
+
+ /* 96k */
+ {12288000, 96000, 128, 0xe, 0x0},
+ {18432000, 96000, 192, 0xf, 0x0},
+ {12000000, 96000, 125, 0xe, 0x1},
+};
+
+static inline int get_coeff(int mclk, int rate)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
+ if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
+ return i;
+ }
+
+ return -EINVAL;
+}
+
+/* The set of rates we can generate from the above for each SYSCLK */
+
+static unsigned int rates_12288[] = {
+ 8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_12288 = {
+ .count = ARRAY_SIZE(rates_12288),
+ .list = rates_12288,
+};
+
+static unsigned int rates_112896[] = {
+ 8000, 11025, 22050, 44100,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_112896 = {
+ .count = ARRAY_SIZE(rates_112896),
+ .list = rates_112896,
+};
+
+static unsigned int rates_12[] = {
+ 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000,
+ 48000, 88235, 96000,
+};
+
+static struct snd_pcm_hw_constraint_list constraints_12 = {
+ .count = ARRAY_SIZE(rates_12),
+ .list = rates_12,
+};
+
+/*
+ * Note that this should be called from init rather than from hw_params.
+ */
+static int wm8988_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
+
+ switch (freq) {
+ case 11289600:
+ case 18432000:
+ case 22579200:
+ case 36864000:
+ wm8988->sysclk_constraints = &constraints_112896;
+ wm8988->sysclk = freq;
+ return 0;
+
+ case 12288000:
+ case 16934400:
+ case 24576000:
+ case 33868800:
+ wm8988->sysclk_constraints = &constraints_12288;
+ wm8988->sysclk = freq;
+ return 0;
+
+ case 12000000:
+ case 24000000:
+ wm8988->sysclk_constraints = &constraints_12;
+ wm8988->sysclk = freq;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int wm8988_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ 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;
+ }
+
+ snd_soc_write(codec, WM8988_IFACE, iface);
+ return 0;
+}
+
+static int wm8988_pcm_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
+
+ /* The set of sample rates that can be supported depends on the
+ * MCLK supplied to the CODEC - enforce this.
+ */
+ if (!wm8988->sysclk) {
+ dev_err(codec->dev,
+ "No MCLK configured, call set_sysclk() on init\n");
+ return -EINVAL;
+ }
+
+ snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ wm8988->sysclk_constraints);
+
+ return 0;
+}
+
+static int wm8988_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
+ u16 iface = snd_soc_read(codec, WM8988_IFACE) & 0x1f3;
+ u16 srate = snd_soc_read(codec, WM8988_SRATE) & 0x180;
+ int coeff;
+
+ coeff = get_coeff(wm8988->sysclk, params_rate(params));
+ if (coeff < 0) {
+ coeff = get_coeff(wm8988->sysclk / 2, params_rate(params));
+ srate |= 0x40;
+ }
+ if (coeff < 0) {
+ dev_err(codec->dev,
+ "Unable to configure sample rate %dHz with %dHz MCLK\n",
+ params_rate(params), wm8988->sysclk);
+ return coeff;
+ }
+
+ /* bit size */
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ iface |= 0x0004;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ iface |= 0x0008;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ iface |= 0x000c;
+ break;
+ }
+
+ /* set iface & srate */
+ snd_soc_write(codec, WM8988_IFACE, iface);
+ if (coeff >= 0)
+ snd_soc_write(codec, WM8988_SRATE, srate |
+ (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
+
+ return 0;
+}
+
+static int wm8988_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ u16 mute_reg = snd_soc_read(codec, WM8988_ADCDAC) & 0xfff7;
+
+ if (mute)
+ snd_soc_write(codec, WM8988_ADCDAC, mute_reg | 0x8);
+ else
+ snd_soc_write(codec, WM8988_ADCDAC, mute_reg);
+ return 0;
+}
+
+static int wm8988_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
+ u16 pwr_reg = snd_soc_read(codec, WM8988_PWR1) & ~0x1c1;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ /* VREF, VMID=2x50k, digital enabled */
+ snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x00c0);
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
+ regcache_sync(wm8988->regmap);
+
+ /* VREF, VMID=2x5k */
+ snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x1c1);
+
+ /* Charge caps */
+ msleep(100);
+ }
+
+ /* VREF, VMID=2*500k, digital stopped */
+ snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x0141);
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ snd_soc_write(codec, WM8988_PWR1, 0x0000);
+ break;
+ }
+ codec->dapm.bias_level = level;
+ return 0;
+}
+
+#define WM8988_RATES SNDRV_PCM_RATE_8000_96000
+
+#define WM8988_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+ SNDRV_PCM_FMTBIT_S24_LE)
+
+static const struct snd_soc_dai_ops wm8988_ops = {
+ .startup = wm8988_pcm_startup,
+ .hw_params = wm8988_pcm_hw_params,
+ .set_fmt = wm8988_set_dai_fmt,
+ .set_sysclk = wm8988_set_dai_sysclk,
+ .digital_mute = wm8988_mute,
+};
+
+static struct snd_soc_dai_driver wm8988_dai = {
+ .name = "wm8988-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8988_RATES,
+ .formats = WM8988_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8988_RATES,
+ .formats = WM8988_FORMATS,
+ },
+ .ops = &wm8988_ops,
+ .symmetric_rates = 1,
+};
+
+static int wm8988_suspend(struct snd_soc_codec *codec)
+{
+ struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
+
+ wm8988_set_bias_level(codec, SND_SOC_BIAS_OFF);
+ regcache_mark_dirty(wm8988->regmap);
+ return 0;
+}
+
+static int wm8988_resume(struct snd_soc_codec *codec)
+{
+ wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+ return 0;
+}
+
+static int wm8988_probe(struct snd_soc_codec *codec)
+{
+ struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
+ int ret = 0;
+
+ codec->control_data = wm8988->regmap;
+ ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
+ return ret;
+ }
+
+ ret = wm8988_reset(codec);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to issue reset\n");
+ return ret;
+ }
+
+ /* set the update bits (we always update left then right) */
+ snd_soc_update_bits(codec, WM8988_RADC, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8988_RDAC, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8988_ROUT1V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8988_ROUT2V, 0x0100, 0x0100);
+ snd_soc_update_bits(codec, WM8988_RINVOL, 0x0100, 0x0100);
+
+ wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ return 0;
+}
+
+static int wm8988_remove(struct snd_soc_codec *codec)
+{
+ wm8988_set_bias_level(codec, SND_SOC_BIAS_OFF);
+ return 0;
+}
+
+static struct snd_soc_codec_driver soc_codec_dev_wm8988 = {
+ .probe = wm8988_probe,
+ .remove = wm8988_remove,
+ .suspend = wm8988_suspend,
+ .resume = wm8988_resume,
+ .set_bias_level = wm8988_set_bias_level,
+
+ .controls = wm8988_snd_controls,
+ .num_controls = ARRAY_SIZE(wm8988_snd_controls),
+ .dapm_widgets = wm8988_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(wm8988_dapm_widgets),
+ .dapm_routes = wm8988_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(wm8988_dapm_routes),
+};
+
+static struct regmap_config wm8988_regmap = {
+ .reg_bits = 7,
+ .val_bits = 9,
+
+ .max_register = WM8988_LPPB,
+ .writeable_reg = wm8988_writeable,
+
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = wm8988_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(wm8988_reg_defaults),
+};
+
+#if defined(CONFIG_SPI_MASTER)
+static int __devinit wm8988_spi_probe(struct spi_device *spi)
+{
+ struct wm8988_priv *wm8988;
+ int ret;
+
+ wm8988 = devm_kzalloc(&spi->dev, sizeof(struct wm8988_priv),
+ GFP_KERNEL);
+ if (wm8988 == NULL)
+ return -ENOMEM;
+
+ wm8988->regmap = regmap_init_spi(spi, &wm8988_regmap);
+ if (IS_ERR(wm8988->regmap)) {
+ ret = PTR_ERR(wm8988->regmap);
+ dev_err(&spi->dev, "Failed to init regmap: %d\n", ret);
+ return ret;
+ }
+
+ spi_set_drvdata(spi, wm8988);
+
+ ret = snd_soc_register_codec(&spi->dev,
+ &soc_codec_dev_wm8988, &wm8988_dai, 1);
+ if (ret != 0)
+ regmap_exit(wm8988->regmap);
+
+ return ret;
+}
+
+static int __devexit wm8988_spi_remove(struct spi_device *spi)
+{
+ struct wm8988_priv *wm8988 = spi_get_drvdata(spi);
+ snd_soc_unregister_codec(&spi->dev);
+ regmap_exit(wm8988->regmap);
+ return 0;
+}
+
+static struct spi_driver wm8988_spi_driver = {
+ .driver = {
+ .name = "wm8988",
+ .owner = THIS_MODULE,
+ },
+ .probe = wm8988_spi_probe,
+ .remove = __devexit_p(wm8988_spi_remove),
+};
+#endif /* CONFIG_SPI_MASTER */
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+static __devinit int wm8988_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct wm8988_priv *wm8988;
+ int ret;
+
+ wm8988 = devm_kzalloc(&i2c->dev, sizeof(struct wm8988_priv),
+ GFP_KERNEL);
+ if (wm8988 == NULL)
+ return -ENOMEM;
+
+ i2c_set_clientdata(i2c, wm8988);
+
+ wm8988->regmap = regmap_init_i2c(i2c, &wm8988_regmap);
+ if (IS_ERR(wm8988->regmap)) {
+ ret = PTR_ERR(wm8988->regmap);
+ dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_register_codec(&i2c->dev,
+ &soc_codec_dev_wm8988, &wm8988_dai, 1);
+ if (ret != 0)
+ regmap_exit(wm8988->regmap);
+
+ return ret;
+}
+
+static __devexit int wm8988_i2c_remove(struct i2c_client *client)
+{
+ struct wm8988_priv *wm8988 = i2c_get_clientdata(client);
+ snd_soc_unregister_codec(&client->dev);
+ regmap_exit(wm8988->regmap);
+ return 0;
+}
+
+static const struct i2c_device_id wm8988_i2c_id[] = {
+ { "wm8988", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wm8988_i2c_id);
+
+static struct i2c_driver wm8988_i2c_driver = {
+ .driver = {
+ .name = "wm8988",
+ .owner = THIS_MODULE,
+ },
+ .probe = wm8988_i2c_probe,
+ .remove = __devexit_p(wm8988_i2c_remove),
+ .id_table = wm8988_i2c_id,
+};
+#endif
+
+static int __init wm8988_modinit(void)
+{
+ int ret = 0;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ ret = i2c_add_driver(&wm8988_i2c_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register WM8988 I2C driver: %d\n",
+ ret);
+ }
+#endif
+#if defined(CONFIG_SPI_MASTER)
+ ret = spi_register_driver(&wm8988_spi_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "Failed to register WM8988 SPI driver: %d\n",
+ ret);
+ }
+#endif
+ return ret;
+}
+module_init(wm8988_modinit);
+
+static void __exit wm8988_exit(void)
+{
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ i2c_del_driver(&wm8988_i2c_driver);
+#endif
+#if defined(CONFIG_SPI_MASTER)
+ spi_unregister_driver(&wm8988_spi_driver);
+#endif
+}
+module_exit(wm8988_exit);
+
+
+MODULE_DESCRIPTION("ASoC WM8988 driver");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-12-20 07:54:19 +0000