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1 | /* |
2 | * helper functions for Asus Xonar cards | |
3 | * | |
4 | * Copyright (c) Clemens Ladisch <clemens@ladisch.de> | |
5 | * | |
6 | * | |
7 | * This driver is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License, version 2. | |
9 | * | |
10 | * This driver is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this driver; if not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #include <linux/delay.h> | |
20 | #include <sound/core.h> | |
21 | #include <sound/control.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/pcm_params.h> | |
24 | #include "xonar.h" | |
25 | ||
26 | ||
27 | #define GPIO_CS53x1_M_MASK 0x000c | |
28 | #define GPIO_CS53x1_M_SINGLE 0x0000 | |
29 | #define GPIO_CS53x1_M_DOUBLE 0x0004 | |
30 | #define GPIO_CS53x1_M_QUAD 0x0008 | |
31 | ||
32 | ||
33 | void xonar_enable_output(struct oxygen *chip) | |
34 | { | |
35 | struct xonar_generic *data = chip->model_data; | |
36 | ||
37 | oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, data->output_enable_bit); | |
38 | msleep(data->anti_pop_delay); | |
39 | oxygen_set_bits16(chip, OXYGEN_GPIO_DATA, data->output_enable_bit); | |
40 | } | |
41 | ||
42 | void xonar_disable_output(struct oxygen *chip) | |
43 | { | |
44 | struct xonar_generic *data = chip->model_data; | |
45 | ||
46 | oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, data->output_enable_bit); | |
47 | } | |
48 | ||
49 | static void xonar_ext_power_gpio_changed(struct oxygen *chip) | |
50 | { | |
51 | struct xonar_generic *data = chip->model_data; | |
52 | u8 has_power; | |
53 | ||
54 | has_power = !!(oxygen_read8(chip, data->ext_power_reg) | |
55 | & data->ext_power_bit); | |
56 | if (has_power != data->has_power) { | |
57 | data->has_power = has_power; | |
58 | if (has_power) { | |
59 | snd_printk(KERN_NOTICE "power restored\n"); | |
60 | } else { | |
61 | snd_printk(KERN_CRIT | |
62 | "Hey! Don't unplug the power cable!\n"); | |
63 | /* TODO: stop PCMs */ | |
64 | } | |
65 | } | |
66 | } | |
67 | ||
68 | void xonar_init_ext_power(struct oxygen *chip) | |
69 | { | |
70 | struct xonar_generic *data = chip->model_data; | |
71 | ||
72 | oxygen_set_bits8(chip, data->ext_power_int_reg, | |
73 | data->ext_power_bit); | |
74 | chip->interrupt_mask |= OXYGEN_INT_GPIO; | |
75 | chip->model.gpio_changed = xonar_ext_power_gpio_changed; | |
76 | data->has_power = !!(oxygen_read8(chip, data->ext_power_reg) | |
77 | & data->ext_power_bit); | |
78 | } | |
79 | ||
80 | void xonar_init_cs53x1(struct oxygen *chip) | |
81 | { | |
82 | oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_CS53x1_M_MASK); | |
83 | oxygen_write16_masked(chip, OXYGEN_GPIO_DATA, | |
84 | GPIO_CS53x1_M_SINGLE, GPIO_CS53x1_M_MASK); | |
85 | } | |
86 | ||
87 | void xonar_set_cs53x1_params(struct oxygen *chip, | |
88 | struct snd_pcm_hw_params *params) | |
89 | { | |
90 | unsigned int value; | |
91 | ||
92 | if (params_rate(params) <= 54000) | |
93 | value = GPIO_CS53x1_M_SINGLE; | |
94 | else if (params_rate(params) <= 108000) | |
95 | value = GPIO_CS53x1_M_DOUBLE; | |
96 | else | |
97 | value = GPIO_CS53x1_M_QUAD; | |
98 | oxygen_write16_masked(chip, OXYGEN_GPIO_DATA, | |
99 | value, GPIO_CS53x1_M_MASK); | |
100 | } | |
101 | ||
102 | int xonar_gpio_bit_switch_get(struct snd_kcontrol *ctl, | |
103 | struct snd_ctl_elem_value *value) | |
104 | { | |
105 | struct oxygen *chip = ctl->private_data; | |
106 | u16 bit = ctl->private_value; | |
2509ec62 | 107 | bool invert = ctl->private_value & XONAR_GPIO_BIT_INVERT; |
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108 | |
109 | value->value.integer.value[0] = | |
2509ec62 | 110 | !!(oxygen_read16(chip, OXYGEN_GPIO_DATA) & bit) ^ invert; |
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111 | return 0; |
112 | } | |
113 | ||
114 | int xonar_gpio_bit_switch_put(struct snd_kcontrol *ctl, | |
115 | struct snd_ctl_elem_value *value) | |
116 | { | |
117 | struct oxygen *chip = ctl->private_data; | |
118 | u16 bit = ctl->private_value; | |
2509ec62 | 119 | bool invert = ctl->private_value & XONAR_GPIO_BIT_INVERT; |
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120 | u16 old_bits, new_bits; |
121 | int changed; | |
122 | ||
123 | spin_lock_irq(&chip->reg_lock); | |
124 | old_bits = oxygen_read16(chip, OXYGEN_GPIO_DATA); | |
2509ec62 | 125 | if (!!value->value.integer.value[0] ^ invert) |
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126 | new_bits = old_bits | bit; |
127 | else | |
128 | new_bits = old_bits & ~bit; | |
129 | changed = new_bits != old_bits; | |
130 | if (changed) | |
131 | oxygen_write16(chip, OXYGEN_GPIO_DATA, new_bits); | |
132 | spin_unlock_irq(&chip->reg_lock); | |
133 | return changed; | |
134 | } |