diff options
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/input/fixp-arith.h | 87 | ||||
-rw-r--r-- | drivers/usb/input/hid-lgff.c | 2 | ||||
-rw-r--r-- | drivers/usb/input/hid-tmff.c | 2 |
3 files changed, 2 insertions, 89 deletions
diff --git a/drivers/usb/input/fixp-arith.h b/drivers/usb/input/fixp-arith.h deleted file mode 100644 index ed3d2da0c485..000000000000 --- a/drivers/usb/input/fixp-arith.h +++ /dev/null | |||
@@ -1,87 +0,0 @@ | |||
1 | #ifndef _FIXP_ARITH_H | ||
2 | #define _FIXP_ARITH_H | ||
3 | |||
4 | /* | ||
5 | * Simplistic fixed-point arithmetics. | ||
6 | * Hmm, I'm probably duplicating some code :( | ||
7 | * | ||
8 | * Copyright (c) 2002 Johann Deneux | ||
9 | */ | ||
10 | |||
11 | /* | ||
12 | * This program is free software; you can redistribute it and/or modify | ||
13 | * it under the terms of the GNU General Public License as published by | ||
14 | * the Free Software Foundation; either version 2 of the License, or | ||
15 | * (at your option) any later version. | ||
16 | * | ||
17 | * This program is distributed in the hope that it will be useful, | ||
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
20 | * GNU General Public License for more details. | ||
21 | * | ||
22 | * You should have received a copy of the GNU General Public License | ||
23 | * along with this program; if not, write to the Free Software | ||
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
25 | * | ||
26 | * Should you need to contact me, the author, you can do so by | ||
27 | * e-mail - mail your message to <deneux@ifrance.com> | ||
28 | */ | ||
29 | |||
30 | #include <linux/types.h> | ||
31 | |||
32 | /* The type representing fixed-point values */ | ||
33 | typedef s16 fixp_t; | ||
34 | |||
35 | #define FRAC_N 8 | ||
36 | #define FRAC_MASK ((1<<FRAC_N)-1) | ||
37 | |||
38 | /* Not to be used directly. Use fixp_{cos,sin} */ | ||
39 | static const fixp_t cos_table[46] = { | ||
40 | 0x0100, 0x00FF, 0x00FF, 0x00FE, 0x00FD, 0x00FC, 0x00FA, 0x00F8, | ||
41 | 0x00F6, 0x00F3, 0x00F0, 0x00ED, 0x00E9, 0x00E6, 0x00E2, 0x00DD, | ||
42 | 0x00D9, 0x00D4, 0x00CF, 0x00C9, 0x00C4, 0x00BE, 0x00B8, 0x00B1, | ||
43 | 0x00AB, 0x00A4, 0x009D, 0x0096, 0x008F, 0x0087, 0x0080, 0x0078, | ||
44 | 0x0070, 0x0068, 0x005F, 0x0057, 0x004F, 0x0046, 0x003D, 0x0035, | ||
45 | 0x002C, 0x0023, 0x001A, 0x0011, 0x0008, 0x0000 | ||
46 | }; | ||
47 | |||
48 | |||
49 | /* a: 123 -> 123.0 */ | ||
50 | static inline fixp_t fixp_new(s16 a) | ||
51 | { | ||
52 | return a<<FRAC_N; | ||
53 | } | ||
54 | |||
55 | /* a: 0xFFFF -> -1.0 | ||
56 | 0x8000 -> 1.0 | ||
57 | 0x0000 -> 0.0 | ||
58 | */ | ||
59 | static inline fixp_t fixp_new16(s16 a) | ||
60 | { | ||
61 | return ((s32)a)>>(16-FRAC_N); | ||
62 | } | ||
63 | |||
64 | static inline fixp_t fixp_cos(unsigned int degrees) | ||
65 | { | ||
66 | int quadrant = (degrees / 90) & 3; | ||
67 | unsigned int i = degrees % 90; | ||
68 | |||
69 | if (quadrant == 1 || quadrant == 3) | ||
70 | i = 90 - i; | ||
71 | |||
72 | i >>= 1; | ||
73 | |||
74 | return (quadrant == 1 || quadrant == 2)? -cos_table[i] : cos_table[i]; | ||
75 | } | ||
76 | |||
77 | static inline fixp_t fixp_sin(unsigned int degrees) | ||
78 | { | ||
79 | return -fixp_cos(degrees + 90); | ||
80 | } | ||
81 | |||
82 | static inline fixp_t fixp_mult(fixp_t a, fixp_t b) | ||
83 | { | ||
84 | return ((s32)(a*b))>>FRAC_N; | ||
85 | } | ||
86 | |||
87 | #endif | ||
diff --git a/drivers/usb/input/hid-lgff.c b/drivers/usb/input/hid-lgff.c index f07d44357ff1..7e264a8c81b1 100644 --- a/drivers/usb/input/hid-lgff.c +++ b/drivers/usb/input/hid-lgff.c | |||
@@ -37,7 +37,7 @@ | |||
37 | #include <linux/circ_buf.h> | 37 | #include <linux/circ_buf.h> |
38 | 38 | ||
39 | #include "hid.h" | 39 | #include "hid.h" |
40 | #include "fixp-arith.h" | 40 | #include "../../input/fixp-arith.h" |
41 | 41 | ||
42 | 42 | ||
43 | /* Periodicity of the update */ | 43 | /* Periodicity of the update */ |
diff --git a/drivers/usb/input/hid-tmff.c b/drivers/usb/input/hid-tmff.c index 534425c69c0a..bc6c54c4c7d3 100644 --- a/drivers/usb/input/hid-tmff.c +++ b/drivers/usb/input/hid-tmff.c | |||
@@ -36,7 +36,7 @@ | |||
36 | #include <linux/circ_buf.h> | 36 | #include <linux/circ_buf.h> |
37 | 37 | ||
38 | #include "hid.h" | 38 | #include "hid.h" |
39 | #include "fixp-arith.h" | 39 | #include "../../input/fixp-arith.h" |
40 | 40 | ||
41 | /* Usages for thrustmaster devices I know about */ | 41 | /* Usages for thrustmaster devices I know about */ |
42 | #define THRUSTMASTER_USAGE_RUMBLE_LR (HID_UP_GENDESK | 0xbb) | 42 | #define THRUSTMASTER_USAGE_RUMBLE_LR (HID_UP_GENDESK | 0xbb) |