// SPDX-License-Identifier: GPL-2.0-or-later /* * ALSA driver for ICEnsemble VT1724 (Envy24HT) * * Lowlevel functions for ESI Juli@ cards * * Copyright (c) 2004 Jaroslav Kysela <[email protected]> * 2008 Pavel Hofman <[email protected]> */ #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/string.h> #include <sound/core.h> #include <sound/tlv.h> #include "ice1712.h" #include "envy24ht.h" #include "juli.h" struct juli_spec { … }; /* * chip addresses on I2C bus */ #define AK4114_ADDR … #define AK4358_ADDR … /* * Juli does not use the standard ICE1724 clock scheme. Juli's ice1724 chip is * supplied by external clock provided by Xilinx array and MK73-1 PLL frequency * multiplier. Actual frequency is set by ice1724 GPIOs hooked to the Xilinx. * * The clock circuitry is supplied by the two ice1724 crystals. This * arrangement allows to generate independent clock signal for AK4114's input * rate detection circuit. As a result, Juli, unlike most other * ice1724+ak4114-based cards, detects spdif input rate correctly. * This fact is applied in the driver, allowing to modify PCM stream rate * parameter according to the actual input rate. * * Juli uses the remaining three stereo-channels of its DAC to optionally * monitor analog input, digital input, and digital output. The corresponding * I2S signals are routed by Xilinx, controlled by GPIOs. * * The master mute is implemented using output muting transistors (GPIO) in * combination with smuting the DAC. * * The card itself has no HW master volume control, implemented using the * vmaster control. * * TODO: * researching and fixing the input monitors */ /* * GPIO pins */ #define GPIO_FREQ_MASK … #define GPIO_FREQ_32KHZ … #define GPIO_FREQ_44KHZ … #define GPIO_FREQ_48KHZ … #define GPIO_MULTI_MASK … #define GPIO_MULTI_4X … #define GPIO_MULTI_2X … #define GPIO_MULTI_1X … #define GPIO_MULTI_HALF … #define GPIO_INTERNAL_CLOCK … #define GPIO_CLOCK_MASK … #define GPIO_ANALOG_PRESENT … #define GPIO_RXMCLK_SEL … #define GPIO_AK5385A_CKS0 … #define GPIO_AK5385A_DFS1 … #define GPIO_AK5385A_DFS0 … #define GPIO_DIGOUT_MONITOR … #define GPIO_DIGIN_MONITOR … #define GPIO_ANAIN_MONITOR … #define GPIO_AK5385A_CKS1 … #define GPIO_MUTE_CONTROL … #define GPIO_RATE_MASK … #define GPIO_AK5385A_MASK … #define JULI_PCM_RATE … #define GPIO_RATE_16000 … #define GPIO_RATE_22050 … #define GPIO_RATE_24000 … #define GPIO_RATE_32000 … #define GPIO_RATE_44100 … #define GPIO_RATE_48000 … #define GPIO_RATE_64000 … #define GPIO_RATE_88200 … #define GPIO_RATE_96000 … #define GPIO_RATE_176400 … #define GPIO_RATE_192000 … /* * Initial setup of the conversion array GPIO <-> rate */ static const unsigned int juli_rates[] = …; static const unsigned int gpio_vals[] = …; static const struct snd_pcm_hw_constraint_list juli_rates_info = …; static int get_gpio_val(int rate) { … } static void juli_ak4114_write(void *private_data, unsigned char reg, unsigned char val) { … } static unsigned char juli_ak4114_read(void *private_data, unsigned char reg) { … } /* * If SPDIF capture and slaved to SPDIF-IN, setting runtime rate * to the external rate */ static void juli_spdif_in_open(struct snd_ice1712 *ice, struct snd_pcm_substream *substream) { … } /* * AK4358 section */ static void juli_akm_lock(struct snd_akm4xxx *ak, int chip) { … } static void juli_akm_unlock(struct snd_akm4xxx *ak, int chip) { … } static void juli_akm_write(struct snd_akm4xxx *ak, int chip, unsigned char addr, unsigned char data) { … } /* * change the rate of envy24HT, AK4358, AK5385 */ static void juli_akm_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate) { … } #define AK_DAC(xname, xch) … #define PCM_VOLUME … #define MONITOR_AN_IN_VOLUME … #define MONITOR_DIG_IN_VOLUME … #define MONITOR_DIG_OUT_VOLUME … static const struct snd_akm4xxx_dac_channel juli_dac[] = …; static const struct snd_akm4xxx akm_juli_dac = …; #define juli_mute_info … static int juli_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int juli_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static const struct snd_kcontrol_new juli_mute_controls[] = …; static const char * const follower_vols[] = …; static DECLARE_TLV_DB_SCALE(juli_master_db_scale, -6350, 50, 1); static int juli_add_controls(struct snd_ice1712 *ice) { … } /* * suspend/resume * */ #ifdef CONFIG_PM_SLEEP static int juli_resume(struct snd_ice1712 *ice) { … } static int juli_suspend(struct snd_ice1712 *ice) { … } #endif /* * initialize the chip */ static inline int juli_is_spdif_master(struct snd_ice1712 *ice) { … } static unsigned int juli_get_rate(struct snd_ice1712 *ice) { … } /* setting new rate */ static void juli_set_rate(struct snd_ice1712 *ice, unsigned int rate) { … } static inline unsigned char juli_set_mclk(struct snd_ice1712 *ice, unsigned int rate) { … } /* setting clock to external - SPDIF */ static int juli_set_spdif_clock(struct snd_ice1712 *ice, int type) { … } /* Called when ak4114 detects change in the input SPDIF stream */ static void juli_ak4114_change(struct ak4114 *ak4114, unsigned char c0, unsigned char c1) { … } static int juli_init(struct snd_ice1712 *ice) { … } /* * Juli@ boards don't provide the EEPROM data except for the vendor IDs. * hence the driver needs to sets up it properly. */ static const unsigned char juli_eeprom[] = …; /* entry point */ struct snd_ice1712_card_info snd_vt1724_juli_cards[] = …;
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