diff options
Diffstat (limited to 'sound/pci/oxygen/xonar_lib.c')
| -rw-r--r-- | sound/pci/oxygen/xonar_lib.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/sound/pci/oxygen/xonar_lib.c b/sound/pci/oxygen/xonar_lib.c new file mode 100644 index 00000000000..b3ff7131665 --- /dev/null +++ b/sound/pci/oxygen/xonar_lib.c @@ -0,0 +1,132 @@ +/* + * helper functions for Asus Xonar cards + * + * Copyright (c) Clemens Ladisch <clemens@ladisch.de> + * + * + * This driver is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2. + * + * This driver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this driver; if not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/delay.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include "xonar.h" + + +#define GPIO_CS53x1_M_MASK 0x000c +#define GPIO_CS53x1_M_SINGLE 0x0000 +#define GPIO_CS53x1_M_DOUBLE 0x0004 +#define GPIO_CS53x1_M_QUAD 0x0008 + + +void xonar_enable_output(struct oxygen *chip) +{ + struct xonar_generic *data = chip->model_data; + + oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, data->output_enable_bit); + msleep(data->anti_pop_delay); + oxygen_set_bits16(chip, OXYGEN_GPIO_DATA, data->output_enable_bit); +} + +void xonar_disable_output(struct oxygen *chip) +{ + struct xonar_generic *data = chip->model_data; + + oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, data->output_enable_bit); +} + +static void xonar_ext_power_gpio_changed(struct oxygen *chip) +{ + struct xonar_generic *data = chip->model_data; + u8 has_power; + + has_power = !!(oxygen_read8(chip, data->ext_power_reg) + & data->ext_power_bit); + if (has_power != data->has_power) { + data->has_power = has_power; + if (has_power) { + snd_printk(KERN_NOTICE "power restored\n"); + } else { + snd_printk(KERN_CRIT + "Hey! Don't unplug the power cable!\n"); + /* TODO: stop PCMs */ + } + } +} + +void xonar_init_ext_power(struct oxygen *chip) +{ + struct xonar_generic *data = chip->model_data; + + oxygen_set_bits8(chip, data->ext_power_int_reg, + data->ext_power_bit); + chip->interrupt_mask |= OXYGEN_INT_GPIO; + chip->model.gpio_changed = xonar_ext_power_gpio_changed; + data->has_power = !!(oxygen_read8(chip, data->ext_power_reg) + & data->ext_power_bit); +} + +void xonar_init_cs53x1(struct oxygen *chip) +{ + oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_CS53x1_M_MASK); + oxygen_write16_masked(chip, OXYGEN_GPIO_DATA, + GPIO_CS53x1_M_SINGLE, GPIO_CS53x1_M_MASK); +} + +void xonar_set_cs53x1_params(struct oxygen *chip, + struct snd_pcm_hw_params *params) +{ + unsigned int value; + + if (params_rate(params) <= 54000) + value = GPIO_CS53x1_M_SINGLE; + else if (params_rate(params) <= 108000) + value = GPIO_CS53x1_M_DOUBLE; + else + value = GPIO_CS53x1_M_QUAD; + oxygen_write16_masked(chip, OXYGEN_GPIO_DATA, + value, GPIO_CS53x1_M_MASK); +} + +int xonar_gpio_bit_switch_get(struct snd_kcontrol *ctl, + struct snd_ctl_elem_value *value) +{ + struct oxygen *chip = ctl->private_data; + u16 bit = ctl->private_value; + + value->value.integer.value[0] = + !!(oxygen_read16(chip, OXYGEN_GPIO_DATA) & bit); + return 0; +} + +int xonar_gpio_bit_switch_put(struct snd_kcontrol *ctl, + struct snd_ctl_elem_value *value) +{ + struct oxygen *chip = ctl->private_data; + u16 bit = ctl->private_value; + u16 old_bits, new_bits; + int changed; + + spin_lock_irq(&chip->reg_lock); + old_bits = oxygen_read16(chip, OXYGEN_GPIO_DATA); + if (value->value.integer.value[0]) + new_bits = old_bits | bit; + else + new_bits = old_bits & ~bit; + changed = new_bits != old_bits; + if (changed) + oxygen_write16(chip, OXYGEN_GPIO_DATA, new_bits); + spin_unlock_irq(&chip->reg_lock); + return changed; +} |