// 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 … #define WM8960_VREF … /* R26 - Power 2 */ #define WM8960_PWR2_LOUT1 … #define WM8960_PWR2_ROUT1 … #define WM8960_PWR2_OUT3 … /* R28 - Anti-pop 1 */ #define WM8960_POBCTRL … #define WM8960_BUFDCOPEN … #define WM8960_BUFIOEN … #define WM8960_SOFT_ST … #define WM8960_HPSTBY … /* R29 - Anti-pop 2 */ #define WM8960_DISOP … #define WM8960_DRES_MASK … #define WM8960_DSCH_TOUT … 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[] = …; static bool wm8960_volatile(struct device *dev, unsigned int reg) { … } #define WM8960_NUM_SUPPLIES … static const char *wm8960_supply_names[WM8960_NUM_SUPPLIES] = …; struct wm8960_priv { … }; #define wm8960_reset(c) … /* enumerated controls */ static const char *wm8960_polarity[] = …; static const char *wm8960_3d_upper_cutoff[] = …; static const char *wm8960_3d_lower_cutoff[] = …; static const char *wm8960_alcfunc[] = …; static const char *wm8960_alcmode[] = …; static const char *wm8960_adc_data_output_sel[] = …; static const char *wm8960_dmonomix[] = …; static const char *wm8960_dacslope[] = …; static const struct soc_enum wm8960_enum[] = …; static const int deemph_settings[] = …; static int wm8960_set_deemph(struct snd_soc_component *component) { … } static int wm8960_get_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int wm8960_put_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } 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[] = …; static const struct snd_kcontrol_new wm8960_lin_boost[] = …; static const struct snd_kcontrol_new wm8960_lin[] = …; static const struct snd_kcontrol_new wm8960_rin_boost[] = …; static const struct snd_kcontrol_new wm8960_rin[] = …; static const struct snd_kcontrol_new wm8960_loutput_mixer[] = …; static const struct snd_kcontrol_new wm8960_routput_mixer[] = …; static const struct snd_kcontrol_new wm8960_mono_out[] = …; static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = …; static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = …; /* 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[] = …; static const struct snd_soc_dapm_route audio_paths[] = …; static const struct snd_soc_dapm_route audio_paths_out3[] = …; static const struct snd_soc_dapm_route audio_paths_capless[] = …; static int wm8960_add_widgets(struct snd_soc_component *component) { … } static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { … } static struct { … } alc_rates[] = …; /* -1 for reserved value */ static const int sysclk_divs[] = …; /* Multiply 256 for internal 256 div */ static const int dac_divs[] = …; /* Multiply 10 to eliminate decimials */ static const int bclk_divs[] = …; /** * 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) { … } /** * 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) { … } static int wm8960_configure_clocking(struct snd_soc_component *component) { … } static int wm8960_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } static int wm8960_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static int wm8960_mute(struct snd_soc_dai *dai, int mute, int direction) { … } static int wm8960_set_bias_level_out3(struct snd_soc_component *component, enum snd_soc_bias_level level) { … } static int wm8960_set_bias_level_capless(struct snd_soc_component *component, enum snd_soc_bias_level level) { … } /* PLL divisors */ struct _pll_div { … }; static bool is_pll_freq_available(unsigned int source, unsigned int target) { … } /* The size in bits of the pll divide multiplied by 10 * to allow rounding later */ #define FIXED_PLL_SIZE … static int pll_factors(unsigned int source, unsigned int target, struct _pll_div *pll_div) { … } static int wm8960_set_pll(struct snd_soc_component *component, unsigned int freq_in, unsigned int freq_out) { … } 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) { … } static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai, int div_id, int div) { … } static int wm8960_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { … } static int wm8960_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int freq, int dir) { … } #define WM8960_RATES … #define WM8960_FORMATS … static const struct snd_soc_dai_ops wm8960_dai_ops = …; static struct snd_soc_dai_driver wm8960_dai = …; static int wm8960_probe(struct snd_soc_component *component) { … } static const struct snd_soc_component_driver soc_component_dev_wm8960 = …; static const struct regmap_config wm8960_regmap = …; static void wm8960_set_pdata_from_of(struct i2c_client *i2c, struct wm8960_data *pdata) { … } static int wm8960_i2c_probe(struct i2c_client *i2c) { … } static void wm8960_i2c_remove(struct i2c_client *client) { … } static const struct i2c_device_id wm8960_i2c_id[] = …; MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); #if defined(CONFIG_OF) static const struct of_device_id wm8960_of_match[] = …; MODULE_DEVICE_TABLE(of, wm8960_of_match); #endif #if defined(CONFIG_ACPI) static const struct acpi_device_id wm8960_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, wm8960_acpi_match); #endif static struct i2c_driver wm8960_i2c_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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