From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 sound/pci/oxygen/xonar_lib.c | 134 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 sound/pci/oxygen/xonar_lib.c

(limited to 'sound/pci/oxygen/xonar_lib.c')

diff --git a/sound/pci/oxygen/xonar_lib.c b/sound/pci/oxygen/xonar_lib.c
new file mode 100644
index 000000000..706b1a421
--- /dev/null
+++ b/sound/pci/oxygen/xonar_lib.c
@@ -0,0 +1,134 @@
+/*
+ * 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) {
+			dev_notice(chip->card->dev, "power restored\n");
+		} else {
+			dev_crit(chip->card->dev,
+				   "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;
+	bool invert = ctl->private_value & XONAR_GPIO_BIT_INVERT;
+
+	value->value.integer.value[0] =
+		!!(oxygen_read16(chip, OXYGEN_GPIO_DATA) & bit) ^ invert;
+	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;
+	bool invert = ctl->private_value & XONAR_GPIO_BIT_INVERT;
+	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] ^ invert)
+		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;
+}
-- 
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