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e97e2ddf SO |
1 | /* |
2 | * IR port driver for the Cirrus Logic EP7211 processor. | |
3 | * | |
4 | * Copyright 2001, Blue Mug Inc. All rights reserved. | |
5 | * Copyright 2007, Samuel Ortiz <samuel@sortiz.org> | |
6 | */ | |
7 | #include <linux/module.h> | |
8 | #include <linux/delay.h> | |
9 | #include <linux/tty.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/spinlock.h> | |
12 | ||
13 | #include <net/irda/irda.h> | |
14 | #include <net/irda/irda_device.h> | |
15 | ||
16 | #include <asm/io.h> | |
a09e64fb | 17 | #include <mach/hardware.h> |
e97e2ddf SO |
18 | |
19 | #include "sir-dev.h" | |
20 | ||
21 | #define MIN_DELAY 25 /* 15 us, but wait a little more to be sure */ | |
22 | #define MAX_DELAY 10000 /* 1 ms */ | |
23 | ||
24 | static int ep7211_open(struct sir_dev *dev); | |
25 | static int ep7211_close(struct sir_dev *dev); | |
26 | static int ep7211_change_speed(struct sir_dev *dev, unsigned speed); | |
27 | static int ep7211_reset(struct sir_dev *dev); | |
28 | ||
29 | static struct dongle_driver ep7211 = { | |
30 | .owner = THIS_MODULE, | |
31 | .driver_name = "EP7211 IR driver", | |
32 | .type = IRDA_EP7211_DONGLE, | |
33 | .open = ep7211_open, | |
34 | .close = ep7211_close, | |
35 | .reset = ep7211_reset, | |
36 | .set_speed = ep7211_change_speed, | |
37 | }; | |
38 | ||
39 | static int __init ep7211_sir_init(void) | |
40 | { | |
41 | return irda_register_dongle(&ep7211); | |
42 | } | |
43 | ||
44 | static void __exit ep7211_sir_cleanup(void) | |
45 | { | |
46 | irda_unregister_dongle(&ep7211); | |
47 | } | |
48 | ||
49 | static int ep7211_open(struct sir_dev *dev) | |
50 | { | |
51 | unsigned int syscon; | |
52 | ||
53 | /* Turn on the SIR encoder. */ | |
54 | syscon = clps_readl(SYSCON1); | |
55 | syscon |= SYSCON1_SIREN; | |
56 | clps_writel(syscon, SYSCON1); | |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
61 | static int ep7211_close(struct sir_dev *dev) | |
62 | { | |
63 | unsigned int syscon; | |
64 | ||
65 | /* Turn off the SIR encoder. */ | |
66 | syscon = clps_readl(SYSCON1); | |
67 | syscon &= ~SYSCON1_SIREN; | |
68 | clps_writel(syscon, SYSCON1); | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
73 | static int ep7211_change_speed(struct sir_dev *dev, unsigned speed) | |
74 | { | |
75 | return 0; | |
76 | } | |
77 | ||
78 | static int ep7211_reset(struct sir_dev *dev) | |
79 | { | |
80 | return 0; | |
81 | } | |
82 | ||
83 | MODULE_AUTHOR("Samuel Ortiz <samuel@sortiz.org>"); | |
84 | MODULE_DESCRIPTION("EP7211 IR dongle driver"); | |
85 | MODULE_LICENSE("GPL"); | |
86 | MODULE_ALIAS("irda-dongle-13"); /* IRDA_EP7211_DONGLE */ | |
87 | ||
88 | module_init(ep7211_sir_init); | |
89 | module_exit(ep7211_sir_cleanup); |