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 000000000000..b3ff71316653
--- /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;
+}