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-rw-r--r--drivers/mfd/Kconfig9
-rw-r--r--drivers/mfd/Makefile1
-rw-r--r--drivers/mfd/ucb1400_core.c106
3 files changed, 116 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 10c44d3fe01a..5dba1651f9cc 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -50,6 +50,15 @@ config HTC_PASIC3
50 HTC Magician devices, respectively. Actual functionality is 50 HTC Magician devices, respectively. Actual functionality is
51 handled by the leds-pasic3 and ds1wm drivers. 51 handled by the leds-pasic3 and ds1wm drivers.
52 52
53config UCB1400_CORE
54 tristate "Philips UCB1400 Core driver"
55 help
56 This enables support for the Philips UCB1400 core functions.
57 The UCB1400 is an AC97 audio codec.
58
59 To compile this driver as a module, choose M here: the
60 module will be called ucb1400_core.
61
53config MFD_TMIO 62config MFD_TMIO
54 bool 63 bool
55 default n 64 default n
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 03ad239ecef0..6abebe364419 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -22,3 +22,4 @@ obj-$(CONFIG_MCP_UCB1200_TS) += ucb1x00-ts.o
22ifeq ($(CONFIG_SA1100_ASSABET),y) 22ifeq ($(CONFIG_SA1100_ASSABET),y)
23obj-$(CONFIG_MCP_UCB1200) += ucb1x00-assabet.o 23obj-$(CONFIG_MCP_UCB1200) += ucb1x00-assabet.o
24endif 24endif
25obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o
diff --git a/drivers/mfd/ucb1400_core.c b/drivers/mfd/ucb1400_core.c
new file mode 100644
index 000000000000..178159e264ce
--- /dev/null
+++ b/drivers/mfd/ucb1400_core.c
@@ -0,0 +1,106 @@
1/*
2 * Core functions for:
3 * Philips UCB1400 multifunction chip
4 *
5 * Based on ucb1400_ts.c:
6 * Author: Nicolas Pitre
7 * Created: September 25, 2006
8 * Copyright: MontaVista Software, Inc.
9 *
10 * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
11 * If something doesnt work and it worked before spliting, e-mail me,
12 * dont bother Nicolas please ;-)
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 *
18 * This code is heavily based on ucb1x00-*.c copyrighted by Russell King
19 * covering the UCB1100, UCB1200 and UCB1300.. Support for the UCB1400 has
20 * been made separate from ucb1x00-core/ucb1x00-ts on Russell's request.
21 */
22
23#include <linux/module.h>
24#include <linux/ucb1400.h>
25
26static int ucb1400_core_probe(struct device *dev)
27{
28 int err;
29 struct ucb1400 *ucb;
30 struct ucb1400_ts ucb_ts;
31 struct snd_ac97 *ac97;
32
33 memset(&ucb_ts, 0, sizeof(ucb_ts));
34
35 ucb = kzalloc(sizeof(struct ucb1400), GFP_KERNEL);
36 if (!ucb) {
37 err = -ENOMEM;
38 goto err;
39 }
40
41 dev_set_drvdata(dev, ucb);
42
43 ac97 = to_ac97_t(dev);
44
45 ucb_ts.id = ucb1400_reg_read(ac97, UCB_ID);
46 if (ucb_ts.id != UCB_ID_1400) {
47 err = -ENODEV;
48 goto err0;
49 }
50
51 /* TOUCHSCREEN */
52 ucb_ts.ac97 = ac97;
53 ucb->ucb1400_ts = platform_device_alloc("ucb1400_ts", -1);
54 if (!ucb->ucb1400_ts) {
55 err = -ENOMEM;
56 goto err0;
57 }
58 err = platform_device_add_data(ucb->ucb1400_ts, &ucb_ts,
59 sizeof(ucb_ts));
60 if (err)
61 goto err1;
62 err = platform_device_add(ucb->ucb1400_ts);
63 if (err)
64 goto err1;
65
66 return 0;
67
68err1:
69 platform_device_put(ucb->ucb1400_ts);
70err0:
71 kfree(ucb);
72err:
73 return err;
74}
75
76static int ucb1400_core_remove(struct device *dev)
77{
78 struct ucb1400 *ucb = dev_get_drvdata(dev);
79
80 platform_device_unregister(ucb->ucb1400_ts);
81 kfree(ucb);
82 return 0;
83}
84
85static struct device_driver ucb1400_core_driver = {
86 .name = "ucb1400_core",
87 .bus = &ac97_bus_type,
88 .probe = ucb1400_core_probe,
89 .remove = ucb1400_core_remove,
90};
91
92static int __init ucb1400_core_init(void)
93{
94 return driver_register(&ucb1400_core_driver);
95}
96
97static void __exit ucb1400_core_exit(void)
98{
99 driver_unregister(&ucb1400_core_driver);
100}
101
102module_init(ucb1400_core_init);
103module_exit(ucb1400_core_exit);
104
105MODULE_DESCRIPTION("Philips UCB1400 driver");
106MODULE_LICENSE("GPL");