// SPDX-License-Identifier: GPL-2.0-only /* * ALSA SoC TWL4030 codec driver * * Author: Steve Sakoman, <[email protected]> */ #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/platform_device.h> #include <linux/of.h> #include <linux/of_gpio.h> #include <linux/mfd/twl.h> #include <linux/slab.h> #include <linux/gpio.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> /* Register descriptions are here */ #include <linux/mfd/twl4030-audio.h> /* TWL4030 PMBR1 Register */ #define TWL4030_PMBR1_REG … /* TWL4030 PMBR1 Register GPIO6 mux bits */ #define TWL4030_GPIO6_PWM0_MUTE(value) … #define TWL4030_CACHEREGNUM … struct twl4030_board_params { … }; /* codec private data */ struct twl4030_priv { … }; static void tw4030_init_ctl_cache(struct twl4030_priv *twl4030) { … } static unsigned int twl4030_read(struct snd_soc_component *component, unsigned int reg) { … } static bool twl4030_can_write_to_chip(struct twl4030_priv *twl4030, unsigned int reg) { … } static int twl4030_write(struct snd_soc_component *component, unsigned int reg, unsigned int value) { … } static inline void twl4030_wait_ms(int time) { … } static void twl4030_codec_enable(struct snd_soc_component *component, int enable) { … } static void twl4030_get_board_param_values(struct twl4030_board_params *board_params, struct device_node *node) { … } static struct twl4030_board_params* twl4030_get_board_params(struct snd_soc_component *component) { … } static void twl4030_init_chip(struct snd_soc_component *component) { … } static void twl4030_apll_enable(struct snd_soc_component *component, int enable) { … } /* Earpiece */ static const struct snd_kcontrol_new twl4030_dapm_earpiece_controls[] = …; /* PreDrive Left */ static const struct snd_kcontrol_new twl4030_dapm_predrivel_controls[] = …; /* PreDrive Right */ static const struct snd_kcontrol_new twl4030_dapm_predriver_controls[] = …; /* Headset Left */ static const struct snd_kcontrol_new twl4030_dapm_hsol_controls[] = …; /* Headset Right */ static const struct snd_kcontrol_new twl4030_dapm_hsor_controls[] = …; /* Carkit Left */ static const struct snd_kcontrol_new twl4030_dapm_carkitl_controls[] = …; /* Carkit Right */ static const struct snd_kcontrol_new twl4030_dapm_carkitr_controls[] = …; /* Handsfree Left */ static const char *twl4030_handsfreel_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_handsfreel_enum, TWL4030_REG_HFL_CTL, 0, twl4030_handsfreel_texts); static const struct snd_kcontrol_new twl4030_dapm_handsfreel_control = …; /* Handsfree Left virtual mute */ static const struct snd_kcontrol_new twl4030_dapm_handsfreelmute_control = …; /* Handsfree Right */ static const char *twl4030_handsfreer_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_handsfreer_enum, TWL4030_REG_HFR_CTL, 0, twl4030_handsfreer_texts); static const struct snd_kcontrol_new twl4030_dapm_handsfreer_control = …; /* Handsfree Right virtual mute */ static const struct snd_kcontrol_new twl4030_dapm_handsfreermute_control = …; /* Vibra */ /* Vibra audio path selection */ static const char *twl4030_vibra_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_vibra_enum, TWL4030_REG_VIBRA_CTL, 2, twl4030_vibra_texts); static const struct snd_kcontrol_new twl4030_dapm_vibra_control = …; /* Vibra path selection: local vibrator (PWM) or audio driven */ static const char *twl4030_vibrapath_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_vibrapath_enum, TWL4030_REG_VIBRA_CTL, 4, twl4030_vibrapath_texts); static const struct snd_kcontrol_new twl4030_dapm_vibrapath_control = …; /* Left analog microphone selection */ static const struct snd_kcontrol_new twl4030_dapm_analoglmic_controls[] = …; /* Right analog microphone selection */ static const struct snd_kcontrol_new twl4030_dapm_analogrmic_controls[] = …; /* TX1 L/R Analog/Digital microphone selection */ static const char *twl4030_micpathtx1_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_micpathtx1_enum, TWL4030_REG_ADCMICSEL, 0, twl4030_micpathtx1_texts); static const struct snd_kcontrol_new twl4030_dapm_micpathtx1_control = …; /* TX2 L/R Analog/Digital microphone selection */ static const char *twl4030_micpathtx2_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_micpathtx2_enum, TWL4030_REG_ADCMICSEL, 2, twl4030_micpathtx2_texts); static const struct snd_kcontrol_new twl4030_dapm_micpathtx2_control = …; /* Analog bypass for AudioR1 */ static const struct snd_kcontrol_new twl4030_dapm_abypassr1_control = …; /* Analog bypass for AudioL1 */ static const struct snd_kcontrol_new twl4030_dapm_abypassl1_control = …; /* Analog bypass for AudioR2 */ static const struct snd_kcontrol_new twl4030_dapm_abypassr2_control = …; /* Analog bypass for AudioL2 */ static const struct snd_kcontrol_new twl4030_dapm_abypassl2_control = …; /* Analog bypass for Voice */ static const struct snd_kcontrol_new twl4030_dapm_abypassv_control = …; /* Digital bypass gain, mute instead of -30dB */ static const DECLARE_TLV_DB_RANGE(twl4030_dapm_dbypass_tlv, 0, 1, TLV_DB_SCALE_ITEM(-3000, 600, 1), 2, 3, TLV_DB_SCALE_ITEM(-2400, 0, 0), 4, 7, TLV_DB_SCALE_ITEM(-1800, 600, 0) ); /* Digital bypass left (TX1L -> RX2L) */ static const struct snd_kcontrol_new twl4030_dapm_dbypassl_control = …; /* Digital bypass right (TX1R -> RX2R) */ static const struct snd_kcontrol_new twl4030_dapm_dbypassr_control = …; /* * Voice Sidetone GAIN volume control: * from -51 to -10 dB in 1 dB steps (mute instead of -51 dB) */ static DECLARE_TLV_DB_SCALE(twl4030_dapm_dbypassv_tlv, -5100, 100, 1); /* Digital bypass voice: sidetone (VUL -> VDL)*/ static const struct snd_kcontrol_new twl4030_dapm_dbypassv_control = …; /* * Output PGA builder: * Handle the muting and unmuting of the given output (turning off the * amplifier associated with the output pin) * On mute bypass the reg_cache and write 0 to the register * On unmute: restore the register content from the reg_cache * Outputs handled in this way: Earpiece, PreDrivL/R, CarkitL/R */ #define TWL4030_OUTPUT_PGA(pin_name, reg, mask) … TWL4030_OUTPUT_PGA(earpiece, TWL4030_REG_EAR_CTL, TWL4030_EAR_GAIN); TWL4030_OUTPUT_PGA(predrivel, TWL4030_REG_PREDL_CTL, TWL4030_PREDL_GAIN); TWL4030_OUTPUT_PGA(predriver, TWL4030_REG_PREDR_CTL, TWL4030_PREDR_GAIN); TWL4030_OUTPUT_PGA(carkitl, TWL4030_REG_PRECKL_CTL, TWL4030_PRECKL_GAIN); TWL4030_OUTPUT_PGA(carkitr, TWL4030_REG_PRECKR_CTL, TWL4030_PRECKR_GAIN); static void handsfree_ramp(struct snd_soc_component *component, int reg, int ramp) { … } static int handsfreelpga_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } static int handsfreerpga_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } static int vibramux_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } static int apll_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } static int aif_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } static void headset_ramp(struct snd_soc_component *component, int ramp) { … } static int headsetlpga_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } static int headsetrpga_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } static int digimic_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { … } /* * Some of the gain controls in TWL (mostly those which are associated with * the outputs) are implemented in an interesting way: * 0x0 : Power down (mute) * 0x1 : 6dB * 0x2 : 0 dB * 0x3 : -6 dB * Inverting not going to help with these. * Custom volsw and volsw_2r get/put functions to handle these gain bits. */ static int snd_soc_get_volsw_twl4030(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_soc_put_volsw_twl4030(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_soc_get_volsw_r2_twl4030(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_soc_put_volsw_r2_twl4030(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } /* Codec operation modes */ static const char *twl4030_op_modes_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_op_modes_enum, TWL4030_REG_CODEC_MODE, 0, twl4030_op_modes_texts); static int snd_soc_put_twl4030_opmode_enum_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } /* * FGAIN volume control: * from -62 to 0 dB in 1 dB steps (mute instead of -63 dB) */ static DECLARE_TLV_DB_SCALE(digital_fine_tlv, -6300, 100, 1); /* * CGAIN volume control: * 0 dB to 12 dB in 6 dB steps * value 2 and 3 means 12 dB */ static DECLARE_TLV_DB_SCALE(digital_coarse_tlv, 0, 600, 0); /* * Voice Downlink GAIN volume control: * from -37 to 12 dB in 1 dB steps (mute instead of -37 dB) */ static DECLARE_TLV_DB_SCALE(digital_voice_downlink_tlv, -3700, 100, 1); /* * Analog playback gain * -24 dB to 12 dB in 2 dB steps */ static DECLARE_TLV_DB_SCALE(analog_tlv, -2400, 200, 0); /* * Gain controls tied to outputs * -6 dB to 6 dB in 6 dB steps (mute instead of -12) */ static DECLARE_TLV_DB_SCALE(output_tvl, -1200, 600, 1); /* * Gain control for earpiece amplifier * 0 dB to 12 dB in 6 dB steps (mute instead of -6) */ static DECLARE_TLV_DB_SCALE(output_ear_tvl, -600, 600, 1); /* * Capture gain after the ADCs * from 0 dB to 31 dB in 1 dB steps */ static DECLARE_TLV_DB_SCALE(digital_capture_tlv, 0, 100, 0); /* * Gain control for input amplifiers * 0 dB to 30 dB in 6 dB steps */ static DECLARE_TLV_DB_SCALE(input_gain_tlv, 0, 600, 0); /* AVADC clock priority */ static const char *twl4030_avadc_clk_priority_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_avadc_clk_priority_enum, TWL4030_REG_AVADC_CTL, 2, twl4030_avadc_clk_priority_texts); static const char *twl4030_rampdelay_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_rampdelay_enum, TWL4030_REG_HS_POPN_SET, 2, twl4030_rampdelay_texts); /* Vibra H-bridge direction mode */ static const char *twl4030_vibradirmode_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_vibradirmode_enum, TWL4030_REG_VIBRA_CTL, 5, twl4030_vibradirmode_texts); /* Vibra H-bridge direction */ static const char *twl4030_vibradir_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_vibradir_enum, TWL4030_REG_VIBRA_CTL, 1, twl4030_vibradir_texts); /* Digimic Left and right swapping */ static const char *twl4030_digimicswap_texts[] = …; static SOC_ENUM_SINGLE_DECL(twl4030_digimicswap_enum, TWL4030_REG_MISC_SET_1, 0, twl4030_digimicswap_texts); static const struct snd_kcontrol_new twl4030_snd_controls[] = …; static const struct snd_soc_dapm_widget twl4030_dapm_widgets[] = …; static const struct snd_soc_dapm_route intercon[] = …; static int twl4030_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { … } static void twl4030_constraints(struct twl4030_priv *twl4030, struct snd_pcm_substream *mst_substream) { … } /* In case of 4 channel mode, the RX1 L/R for playback and the TX2 L/R for * capture has to be enabled/disabled. */ static void twl4030_tdm_enable(struct snd_soc_component *component, int direction, int enable) { … } static int twl4030_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static void twl4030_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static int twl4030_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } static int twl4030_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { … } static int twl4030_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { … } static int twl4030_set_tristate(struct snd_soc_dai *dai, int tristate) { … } /* In case of voice mode, the RX1 L(VRX) for downlink and the TX2 L/R * (VTXL, VTXR) for uplink has to be enabled/disabled. */ static void twl4030_voice_enable(struct snd_soc_component *component, int direction, int enable) { … } static int twl4030_voice_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static void twl4030_voice_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static int twl4030_voice_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } static int twl4030_voice_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { … } static int twl4030_voice_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { … } static int twl4030_voice_set_tristate(struct snd_soc_dai *dai, int tristate) { … } #define TWL4030_RATES … #define TWL4030_FORMATS … static const struct snd_soc_dai_ops twl4030_dai_hifi_ops = …; static const struct snd_soc_dai_ops twl4030_dai_voice_ops = …; static struct snd_soc_dai_driver twl4030_dai[] = …; static int twl4030_soc_probe(struct snd_soc_component *component) { … } static void twl4030_soc_remove(struct snd_soc_component *component) { … } static const struct snd_soc_component_driver soc_component_dev_twl4030 = …; static int twl4030_codec_probe(struct platform_device *pdev) { … } MODULE_ALIAS(…) …; static struct platform_driver twl4030_codec_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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