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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * helper functions for Asus Xonar cards4 *5 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>6 */7 8#include <linux/delay.h>9#include <sound/core.h>10#include <sound/control.h>11#include <sound/pcm.h>12#include <sound/pcm_params.h>13#include "xonar.h"14 15 16#define GPIO_CS53x1_M_MASK 0x000c17#define GPIO_CS53x1_M_SINGLE 0x000018#define GPIO_CS53x1_M_DOUBLE 0x000419#define GPIO_CS53x1_M_QUAD 0x000820 21 22void xonar_enable_output(struct oxygen *chip)23{24 struct xonar_generic *data = chip->model_data;25 26 oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, data->output_enable_bit);27 msleep(data->anti_pop_delay);28 oxygen_set_bits16(chip, OXYGEN_GPIO_DATA, data->output_enable_bit);29}30 31void xonar_disable_output(struct oxygen *chip)32{33 struct xonar_generic *data = chip->model_data;34 35 oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, data->output_enable_bit);36}37 38static void xonar_ext_power_gpio_changed(struct oxygen *chip)39{40 struct xonar_generic *data = chip->model_data;41 u8 has_power;42 43 has_power = !!(oxygen_read8(chip, data->ext_power_reg)44 & data->ext_power_bit);45 if (has_power != data->has_power) {46 data->has_power = has_power;47 if (has_power) {48 dev_notice(chip->card->dev, "power restored\n");49 } else {50 dev_crit(chip->card->dev,51 "Hey! Don't unplug the power cable!\n");52 /* TODO: stop PCMs */53 }54 }55}56 57void xonar_init_ext_power(struct oxygen *chip)58{59 struct xonar_generic *data = chip->model_data;60 61 oxygen_set_bits8(chip, data->ext_power_int_reg,62 data->ext_power_bit);63 chip->interrupt_mask |= OXYGEN_INT_GPIO;64 chip->model.gpio_changed = xonar_ext_power_gpio_changed;65 data->has_power = !!(oxygen_read8(chip, data->ext_power_reg)66 & data->ext_power_bit);67}68 69void xonar_init_cs53x1(struct oxygen *chip)70{71 oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_CS53x1_M_MASK);72 oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,73 GPIO_CS53x1_M_SINGLE, GPIO_CS53x1_M_MASK);74}75 76void xonar_set_cs53x1_params(struct oxygen *chip,77 struct snd_pcm_hw_params *params)78{79 unsigned int value;80 81 if (params_rate(params) <= 54000)82 value = GPIO_CS53x1_M_SINGLE;83 else if (params_rate(params) <= 108000)84 value = GPIO_CS53x1_M_DOUBLE;85 else86 value = GPIO_CS53x1_M_QUAD;87 oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,88 value, GPIO_CS53x1_M_MASK);89}90 91int xonar_gpio_bit_switch_get(struct snd_kcontrol *ctl,92 struct snd_ctl_elem_value *value)93{94 struct oxygen *chip = ctl->private_data;95 u16 bit = ctl->private_value;96 bool invert = ctl->private_value & XONAR_GPIO_BIT_INVERT;97 98 value->value.integer.value[0] =99 !!(oxygen_read16(chip, OXYGEN_GPIO_DATA) & bit) ^ invert;100 return 0;101}102 103int xonar_gpio_bit_switch_put(struct snd_kcontrol *ctl,104 struct snd_ctl_elem_value *value)105{106 struct oxygen *chip = ctl->private_data;107 u16 bit = ctl->private_value;108 bool invert = ctl->private_value & XONAR_GPIO_BIT_INVERT;109 u16 old_bits, new_bits;110 int changed;111 112 spin_lock_irq(&chip->reg_lock);113 old_bits = oxygen_read16(chip, OXYGEN_GPIO_DATA);114 if (!!value->value.integer.value[0] ^ invert)115 new_bits = old_bits | bit;116 else117 new_bits = old_bits & ~bit;118 changed = new_bits != old_bits;119 if (changed)120 oxygen_write16(chip, OXYGEN_GPIO_DATA, new_bits);121 spin_unlock_irq(&chip->reg_lock);122 return changed;123}124