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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * ALSA driver for ICEnsemble ICE1712 (Envy24) | |
4 | * | |
5 | * AK4524 / AK4528 / AK4529 / AK4355 / AK4381 interface | |
6 | * | |
c1017a4c | 7 | * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
8 | */ |
9 | ||
6cbbfe1c | 10 | #include <linux/io.h> |
1da177e4 LT |
11 | #include <linux/delay.h> |
12 | #include <linux/interrupt.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
1da177e4 | 14 | #include <linux/init.h> |
da155d5b | 15 | #include <linux/module.h> |
1da177e4 LT |
16 | #include <sound/core.h> |
17 | #include <sound/initval.h> | |
18 | #include "ice1712.h" | |
19 | ||
c1017a4c | 20 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
21 | MODULE_DESCRIPTION("ICEnsemble ICE17xx <-> AK4xxx AD/DA chip interface"); |
22 | MODULE_LICENSE("GPL"); | |
23 | ||
6ca308d4 | 24 | static void snd_ice1712_akm4xxx_lock(struct snd_akm4xxx *ak, int chip) |
1da177e4 | 25 | { |
6ca308d4 | 26 | struct snd_ice1712 *ice = ak->private_data[0]; |
1da177e4 LT |
27 | |
28 | snd_ice1712_save_gpio_status(ice); | |
29 | } | |
30 | ||
6ca308d4 | 31 | static void snd_ice1712_akm4xxx_unlock(struct snd_akm4xxx *ak, int chip) |
1da177e4 | 32 | { |
6ca308d4 | 33 | struct snd_ice1712 *ice = ak->private_data[0]; |
1da177e4 LT |
34 | |
35 | snd_ice1712_restore_gpio_status(ice); | |
36 | } | |
37 | ||
38 | /* | |
39 | * write AK4xxx register | |
40 | */ | |
6ca308d4 | 41 | static void snd_ice1712_akm4xxx_write(struct snd_akm4xxx *ak, int chip, |
1da177e4 LT |
42 | unsigned char addr, unsigned char data) |
43 | { | |
44 | unsigned int tmp; | |
45 | int idx; | |
46 | unsigned int addrdata; | |
47 | struct snd_ak4xxx_private *priv = (void *)ak->private_value[0]; | |
6ca308d4 | 48 | struct snd_ice1712 *ice = ak->private_data[0]; |
1da177e4 | 49 | |
da3cec35 TI |
50 | if (snd_BUG_ON(chip < 0 || chip >= 4)) |
51 | return; | |
1da177e4 LT |
52 | |
53 | tmp = snd_ice1712_gpio_read(ice); | |
54 | tmp |= priv->add_flags; | |
55 | tmp &= ~priv->mask_flags; | |
56 | if (priv->cs_mask == priv->cs_addr) { | |
57 | if (priv->cif) { | |
58 | tmp |= priv->cs_mask; /* start without chip select */ | |
59 | } else { | |
60 | tmp &= ~priv->cs_mask; /* chip select low */ | |
61 | snd_ice1712_gpio_write(ice, tmp); | |
62 | udelay(1); | |
63 | } | |
64 | } else { | |
65 | /* doesn't handle cf=1 yet */ | |
66 | tmp &= ~priv->cs_mask; | |
67 | tmp |= priv->cs_addr; | |
68 | snd_ice1712_gpio_write(ice, tmp); | |
69 | udelay(1); | |
70 | } | |
71 | ||
72 | /* build I2C address + data byte */ | |
73 | addrdata = (priv->caddr << 6) | 0x20 | (addr & 0x1f); | |
74 | addrdata = (addrdata << 8) | data; | |
75 | for (idx = 15; idx >= 0; idx--) { | |
76 | /* drop clock */ | |
77 | tmp &= ~priv->clk_mask; | |
78 | snd_ice1712_gpio_write(ice, tmp); | |
79 | udelay(1); | |
80 | /* set data */ | |
81 | if (addrdata & (1 << idx)) | |
82 | tmp |= priv->data_mask; | |
83 | else | |
84 | tmp &= ~priv->data_mask; | |
85 | snd_ice1712_gpio_write(ice, tmp); | |
86 | udelay(1); | |
87 | /* raise clock */ | |
88 | tmp |= priv->clk_mask; | |
89 | snd_ice1712_gpio_write(ice, tmp); | |
90 | udelay(1); | |
91 | } | |
92 | ||
93 | if (priv->cs_mask == priv->cs_addr) { | |
94 | if (priv->cif) { | |
95 | /* assert a cs pulse to trigger */ | |
96 | tmp &= ~priv->cs_mask; | |
97 | snd_ice1712_gpio_write(ice, tmp); | |
98 | udelay(1); | |
99 | } | |
100 | tmp |= priv->cs_mask; /* chip select high to trigger */ | |
101 | } else { | |
102 | tmp &= ~priv->cs_mask; | |
103 | tmp |= priv->cs_none; /* deselect address */ | |
104 | } | |
105 | snd_ice1712_gpio_write(ice, tmp); | |
106 | udelay(1); | |
107 | } | |
108 | ||
109 | /* | |
6ca308d4 | 110 | * initialize the struct snd_akm4xxx record with the template |
1da177e4 | 111 | */ |
6ca308d4 TI |
112 | int snd_ice1712_akm4xxx_init(struct snd_akm4xxx *ak, const struct snd_akm4xxx *temp, |
113 | const struct snd_ak4xxx_private *_priv, struct snd_ice1712 *ice) | |
1da177e4 LT |
114 | { |
115 | struct snd_ak4xxx_private *priv; | |
116 | ||
117 | if (_priv != NULL) { | |
118 | priv = kmalloc(sizeof(*priv), GFP_KERNEL); | |
119 | if (priv == NULL) | |
120 | return -ENOMEM; | |
121 | *priv = *_priv; | |
122 | } else { | |
123 | priv = NULL; | |
124 | } | |
125 | *ak = *temp; | |
126 | ak->card = ice->card; | |
127 | ak->private_value[0] = (unsigned long)priv; | |
128 | ak->private_data[0] = ice; | |
129 | if (ak->ops.lock == NULL) | |
130 | ak->ops.lock = snd_ice1712_akm4xxx_lock; | |
131 | if (ak->ops.unlock == NULL) | |
132 | ak->ops.unlock = snd_ice1712_akm4xxx_unlock; | |
133 | if (ak->ops.write == NULL) | |
134 | ak->ops.write = snd_ice1712_akm4xxx_write; | |
135 | snd_akm4xxx_init(ak); | |
136 | return 0; | |
137 | } | |
138 | ||
6ca308d4 | 139 | void snd_ice1712_akm4xxx_free(struct snd_ice1712 *ice) |
1da177e4 LT |
140 | { |
141 | unsigned int akidx; | |
142 | if (ice->akm == NULL) | |
143 | return; | |
144 | for (akidx = 0; akidx < ice->akm_codecs; akidx++) { | |
6ca308d4 | 145 | struct snd_akm4xxx *ak = &ice->akm[akidx]; |
1da177e4 LT |
146 | kfree((void*)ak->private_value[0]); |
147 | } | |
148 | kfree(ice->akm); | |
149 | } | |
150 | ||
151 | /* | |
152 | * build AK4xxx controls | |
153 | */ | |
6ca308d4 | 154 | int snd_ice1712_akm4xxx_build_controls(struct snd_ice1712 *ice) |
1da177e4 LT |
155 | { |
156 | unsigned int akidx; | |
157 | int err; | |
158 | ||
159 | for (akidx = 0; akidx < ice->akm_codecs; akidx++) { | |
6ca308d4 | 160 | struct snd_akm4xxx *ak = &ice->akm[akidx]; |
1da177e4 LT |
161 | err = snd_akm4xxx_build_controls(ak); |
162 | if (err < 0) | |
163 | return err; | |
164 | } | |
165 | return 0; | |
166 | } | |
167 | ||
1da177e4 LT |
168 | EXPORT_SYMBOL(snd_ice1712_akm4xxx_init); |
169 | EXPORT_SYMBOL(snd_ice1712_akm4xxx_free); | |
170 | EXPORT_SYMBOL(snd_ice1712_akm4xxx_build_controls); |