^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // soc-ac97.c -- ALSA SoC Audio Layer AC97 support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Copyright 2005 Wolfson Microelectronics PLC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) // Copyright 2005 Openedhand Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) // Copyright (C) 2010 Slimlogic Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) // Copyright (C) 2010 Texas Instruments Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) // Author: Liam Girdwood <lrg@slimlogic.co.uk>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) // with code, comments and ideas from :-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) // Richard Purdie <richard@openedhand.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/gpio/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/of_gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/pinctrl/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <sound/ac97_codec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <sound/soc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct snd_ac97_reset_cfg {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct pinctrl *pctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct pinctrl_state *pstate_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct pinctrl_state *pstate_warm_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct pinctrl_state *pstate_run;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int gpio_sdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) int gpio_sync;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) int gpio_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct snd_ac97_gpio_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #ifdef CONFIG_GPIOLIB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct gpio_chip gpio_chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) unsigned int gpios_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct snd_soc_component *component;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static struct snd_ac97_bus soc_ac97_bus = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) .ops = NULL, /* Gets initialized in snd_soc_set_ac97_ops() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static void soc_ac97_device_release(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) kfree(to_ac97_t(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #ifdef CONFIG_GPIOLIB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static inline struct snd_soc_component *gpio_to_component(struct gpio_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct snd_ac97_gpio_priv *gpio_priv = gpiochip_get_data(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return gpio_priv->component;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static int snd_soc_ac97_gpio_request(struct gpio_chip *chip, unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (offset >= AC97_NUM_GPIOS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static int snd_soc_ac97_gpio_direction_in(struct gpio_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct snd_soc_component *component = gpio_to_component(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) dev_dbg(component->dev, "set gpio %d to output\n", offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return snd_soc_component_update_bits(component, AC97_GPIO_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 1 << offset, 1 << offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int snd_soc_ac97_gpio_get(struct gpio_chip *chip, unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct snd_soc_component *component = gpio_to_component(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) ret = snd_soc_component_read(component, AC97_GPIO_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) dev_dbg(component->dev, "get gpio %d : %d\n", offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) ret & (1 << offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return !!(ret & (1 << offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static void snd_soc_ac97_gpio_set(struct gpio_chip *chip, unsigned offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct snd_ac97_gpio_priv *gpio_priv = gpiochip_get_data(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct snd_soc_component *component = gpio_to_component(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) gpio_priv->gpios_set &= ~(1 << offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) gpio_priv->gpios_set |= (!!value) << offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) snd_soc_component_write(component, AC97_GPIO_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) gpio_priv->gpios_set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) dev_dbg(component->dev, "set gpio %d to %d\n", offset, !!value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static int snd_soc_ac97_gpio_direction_out(struct gpio_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) unsigned offset, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct snd_soc_component *component = gpio_to_component(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) dev_dbg(component->dev, "set gpio %d to output\n", offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) snd_soc_ac97_gpio_set(chip, offset, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return snd_soc_component_update_bits(component, AC97_GPIO_CFG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 1 << offset, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static const struct gpio_chip snd_soc_ac97_gpio_chip = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .label = "snd_soc_ac97",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .request = snd_soc_ac97_gpio_request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .direction_input = snd_soc_ac97_gpio_direction_in,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .get = snd_soc_ac97_gpio_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .direction_output = snd_soc_ac97_gpio_direction_out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .set = snd_soc_ac97_gpio_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .can_sleep = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static int snd_soc_ac97_init_gpio(struct snd_ac97 *ac97,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct snd_soc_component *component)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct snd_ac97_gpio_priv *gpio_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) gpio_priv = devm_kzalloc(component->dev, sizeof(*gpio_priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (!gpio_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) ac97->gpio_priv = gpio_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) gpio_priv->component = component;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) gpio_priv->gpio_chip = snd_soc_ac97_gpio_chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) gpio_priv->gpio_chip.ngpio = AC97_NUM_GPIOS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) gpio_priv->gpio_chip.parent = component->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) gpio_priv->gpio_chip.base = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ret = gpiochip_add_data(&gpio_priv->gpio_chip, gpio_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) dev_err(component->dev, "Failed to add GPIOs: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static void snd_soc_ac97_free_gpio(struct snd_ac97 *ac97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) gpiochip_remove(&ac97->gpio_priv->gpio_chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static int snd_soc_ac97_init_gpio(struct snd_ac97 *ac97,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct snd_soc_component *component)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static void snd_soc_ac97_free_gpio(struct snd_ac97 *ac97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * snd_soc_alloc_ac97_component() - Allocate new a AC'97 device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * @component: The COMPONENT for which to create the AC'97 device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * Allocated a new snd_ac97 device and intializes it, but does not yet register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * it. The caller is responsible to either call device_add(&ac97->dev) to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * register the device, or to call put_device(&ac97->dev) to free the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * Returns: A snd_ac97 device or a PTR_ERR in case of an error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct snd_ac97 *snd_soc_alloc_ac97_component(struct snd_soc_component *component)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct snd_ac97 *ac97;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (ac97 == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) ac97->bus = &soc_ac97_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ac97->num = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) ac97->dev.bus = &ac97_bus_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) ac97->dev.parent = component->card->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) ac97->dev.release = soc_ac97_device_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) dev_set_name(&ac97->dev, "%d-%d:%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) component->card->snd_card->number, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) component->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) device_initialize(&ac97->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) return ac97;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) EXPORT_SYMBOL(snd_soc_alloc_ac97_component);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * snd_soc_new_ac97_component - initailise AC97 device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * @component: audio component
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * @id: The expected device ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * @id_mask: Mask that is applied to the device ID before comparing with @id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * Initialises AC97 component resources for use by ad-hoc devices only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * If @id is not 0 this function will reset the device, then read the ID from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * the device and check if it matches the expected ID. If it doesn't match an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * error will be returned and device will not be registered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * Returns: A PTR_ERR() on failure or a valid snd_ac97 struct on success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct snd_ac97 *snd_soc_new_ac97_component(struct snd_soc_component *component,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) unsigned int id, unsigned int id_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) struct snd_ac97 *ac97;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) ac97 = snd_soc_alloc_ac97_component(component);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (IS_ERR(ac97))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return ac97;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) ret = snd_ac97_reset(ac97, false, id, id_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) dev_err(component->dev, "Failed to reset AC97 device: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) goto err_put_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) ret = device_add(&ac97->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) goto err_put_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) ret = snd_soc_ac97_init_gpio(ac97, component);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) goto err_put_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return ac97;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) err_put_device:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) put_device(&ac97->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return ERR_PTR(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) EXPORT_SYMBOL_GPL(snd_soc_new_ac97_component);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * snd_soc_free_ac97_component - free AC97 component device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) * @ac97: snd_ac97 device to be freed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * Frees AC97 component device resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) void snd_soc_free_ac97_component(struct snd_ac97 *ac97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) snd_soc_ac97_free_gpio(ac97);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) device_del(&ac97->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) ac97->bus = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) put_device(&ac97->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) EXPORT_SYMBOL_GPL(snd_soc_free_ac97_component);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) static struct snd_ac97_reset_cfg snd_ac97_rst_cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_warm_reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) udelay(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) msleep(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) struct pinctrl *pctl = snd_ac97_rst_cfg.pctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) gpio_direction_output(snd_ac97_rst_cfg.gpio_sync, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) gpio_direction_output(snd_ac97_rst_cfg.gpio_sdata, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) udelay(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) gpio_direction_output(snd_ac97_rst_cfg.gpio_reset, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) pinctrl_select_state(pctl, snd_ac97_rst_cfg.pstate_run);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) msleep(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static int snd_soc_ac97_parse_pinctl(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) struct snd_ac97_reset_cfg *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct pinctrl *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct pinctrl_state *state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) int gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) p = devm_pinctrl_get(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (IS_ERR(p)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) dev_err(dev, "Failed to get pinctrl\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return PTR_ERR(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) cfg->pctl = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) state = pinctrl_lookup_state(p, "ac97-reset");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) if (IS_ERR(state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) dev_err(dev, "Can't find pinctrl state ac97-reset\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return PTR_ERR(state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) cfg->pstate_reset = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) state = pinctrl_lookup_state(p, "ac97-warm-reset");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (IS_ERR(state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return PTR_ERR(state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) cfg->pstate_warm_reset = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) state = pinctrl_lookup_state(p, "ac97-running");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (IS_ERR(state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) dev_err(dev, "Can't find pinctrl state ac97-running\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return PTR_ERR(state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) cfg->pstate_run = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) if (gpio < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) dev_err(dev, "Can't find ac97-sync gpio\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) ret = devm_gpio_request(dev, gpio, "AC97 link sync");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) dev_err(dev, "Failed requesting ac97-sync gpio\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) cfg->gpio_sync = gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (gpio < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) ret = devm_gpio_request(dev, gpio, "AC97 link sdata");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) dev_err(dev, "Failed requesting ac97-sdata gpio\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) cfg->gpio_sdata = gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (gpio < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) dev_err(dev, "Can't find ac97-reset gpio\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) return gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) ret = devm_gpio_request(dev, gpio, "AC97 link reset");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) dev_err(dev, "Failed requesting ac97-reset gpio\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) cfg->gpio_reset = gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) struct snd_ac97_bus_ops *soc_ac97_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) EXPORT_SYMBOL_GPL(soc_ac97_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (ops == soc_ac97_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) if (soc_ac97_ops && ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) soc_ac97_ops = ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) soc_ac97_bus.ops = ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) * @ops: bus ops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * @pdev: platform device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * This function sets the reset and warm_reset properties of ops and parses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * the device node of pdev to get pinctrl states and gpio numbers to use.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) struct snd_ac97_reset_cfg cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) ret = snd_soc_ac97_parse_pinctl(dev, &cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) ret = snd_soc_set_ac97_ops(ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) ops->warm_reset = snd_soc_ac97_warm_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) ops->reset = snd_soc_ac97_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) snd_ac97_rst_cfg = cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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