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-rw-r--r--arch/blackfin/mach-bf537/boards/led.S183
1 files changed, 0 insertions, 183 deletions
diff --git a/arch/blackfin/mach-bf537/boards/led.S b/arch/blackfin/mach-bf537/boards/led.S
deleted file mode 100644
index 4e9ea4283e5..00000000000
--- a/arch/blackfin/mach-bf537/boards/led.S
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1/****************************************************
2 * LED1 ---- PF6 LED2 ---- PF7 *
3 * LED3 ---- PF8 LED4 ---- PF9 *
4 * LED5 ---- PF10 LED6 ---- PF11 *
5 ****************************************************/
6
7#include <linux/linkage.h>
8#include <asm/blackfin.h>
9
10/* All functions in this file save the registers they uses.
11 So there is no need to save any registers before calling them. */
12
13 .text;
14
15/* Initialize LEDs. */
16
17ENTRY(_led_init)
18 LINK 12;
19 [--SP] = P0;
20 [--SP] = R0;
21 [--SP] = R1;
22 [--SP] = R2;
23 R1 = PF6|PF7|PF8|PF9|PF10|PF11 (Z);
24 R2 = ~R1;
25
26 P0.H = hi(PORTF_FER);
27 P0.L = lo(PORTF_FER);
28 R0 = W[P0](Z);
29 SSYNC;
30 R0 = R0 & R2;
31 W[P0] = R0.L;
32 SSYNC;
33
34 P0.H = hi(PORTFIO_DIR);
35 P0.L = lo(PORTFIO_DIR);
36 R0 = W[P0](Z);
37 SSYNC;
38 R0 = R0 | R1;
39 W[P0] = R0.L;
40 SSYNC;
41
42 P0.H = hi(PORTFIO_INEN);
43 P0.L = lo(PORTFIO_INEN);
44 R0 = W[P0](Z);
45 SSYNC;
46 R0 = R0 & R2;
47 W[P0] = R0.L;
48 SSYNC;
49
50 R2 = [SP++];
51 R1 = [SP++];
52 R0 = [SP++];
53 P0 = [SP++];
54 UNLINK;
55 RTS;
56 .size _led_init, .-_led_init
57
58/* Set one LED on. Leave other LEDs unchanged.
59 It expects the LED number passed through R0. */
60
61ENTRY(_led_on)
62 LINK 12;
63 [--SP] = P0;
64 [--SP] = R1;
65 CALL _led_init;
66 R1 = 1;
67 R0 += 5;
68 R1 <<= R0;
69 P0.H = hi(PORTFIO);
70 P0.L = lo(PORTFIO);
71 R0 = W[P0](Z);
72 SSYNC;
73 R0 = R0 | R1;
74 W[P0] = R0.L;
75 SSYNC;
76 R1 = [SP++];
77 P0 = [SP++];
78 UNLINK;
79 RTS;
80 .size _led_on, .-_led_on
81
82/* Set one LED off. Leave other LEDs unchanged. */
83
84ENTRY(_led_off)
85 LINK 12;
86 [--SP] = P0;
87 [--SP] = R1;
88 CALL _led_init;
89 R1 = 1;
90 R0 += 5;
91 R1 <<= R0;
92 R1 = ~R1;
93 P0.H = hi(PORTFIO);
94 P0.L = lo(PORTFIO);
95 R0 = W[P0](Z);
96 SSYNC;
97 R0 = R0 & R1;
98 W[P0] = R0.L;
99 SSYNC;
100 R1 = [SP++];
101 P0 = [SP++];
102 UNLINK;
103 RTS;
104 .size _led_off, .-_led_off
105
106/* Toggle one LED. Leave other LEDs unchanged. */
107
108ENTRY(_led_toggle)
109 LINK 12;
110 [--SP] = P0;
111 [--SP] = R1;
112 CALL _led_init;
113 R1 = 1;
114 R0 += 5;
115 R1 <<= R0;
116 P0.H = hi(PORTFIO);
117 P0.L = lo(PORTFIO);
118 R0 = W[P0](Z);
119 SSYNC;
120 R0 = R0 ^ R1;
121 W[P0] = R0.L;
122 SSYNC;
123 R1 = [SP++];
124 P0 = [SP++];
125 UNLINK;
126 RTS;
127 .size _led_toggle, .-_led_toggle
128
129/* Display the number using LEDs in binary format. */
130
131ENTRY(_led_disp_num)
132 LINK 12;
133 [--SP] = P0;
134 [--SP] = R1;
135 [--SP] = R2;
136 CALL _led_init;
137 R1 = 0x3f(X);
138 R0 = R0 & R1;
139 R2 = 6(X);
140 R0 <<= R2;
141 R1 <<= R2;
142 P0.H = hi(PORTFIO);
143 P0.L = lo(PORTFIO);
144 R2 = W[P0](Z);
145 SSYNC;
146 R1 = ~R1;
147 R2 = R2 & R1;
148 R2 = R2 | R0;
149 W[P0] = R2.L;
150 SSYNC;
151 R2 = [SP++];
152 R1 = [SP++];
153 P0 = [SP++];
154 UNLINK;
155 RTS;
156 .size _led_disp_num, .-_led_disp_num
157
158/* Toggle the number using LEDs in binary format. */
159
160ENTRY(_led_toggle_num)
161 LINK 12;
162 [--SP] = P0;
163 [--SP] = R1;
164 [--SP] = R2;
165 CALL _led_init;
166 R1 = 0x3f(X);
167 R0 = R0 & R1;
168 R1 = 6(X);
169 R0 <<= R1;
170 P0.H = hi(PORTFIO);
171 P0.L = lo(PORTFIO);
172 R1 = W[P0](Z);
173 SSYNC;
174 R1 = R1 ^ R0;
175 W[P0] = R1.L;
176 SSYNC;
177 R2 = [SP++];
178 R1 = [SP++];
179 P0 = [SP++];
180 UNLINK;
181 RTS;
182 .size _led_toggle_num, .-_led_toggle_num
183