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Russell King
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Russell King
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Jun 1, 2008
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@@ -1,2 +1,2 @@ | ||
--- | ||
refs/heads/master: 203c80187eba037f2d6562e0d5847014746726dd | ||
refs/heads/master: ee48a75c95145bf6af3be329cd7cbbca2ec89a2a |
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@@ -76,4 +76,4 @@ ENTRY(_outsw_8) | |
R0 = R0 + R1; | ||
.Lword8_loop_e: W[P0] = R0; | ||
RTS; | ||
ENDPROC(_outsw_8) | ||
ENDPROC(_outsw) |
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/**************************************************** | ||
* LED1 ---- PF6 LED2 ---- PF7 * | ||
* LED3 ---- PF8 LED4 ---- PF9 * | ||
* LED5 ---- PF10 LED6 ---- PF11 * | ||
****************************************************/ | ||
|
||
#include <linux/linkage.h> | ||
#include <asm/blackfin.h> | ||
|
||
/* All functions in this file save the registers they uses. | ||
So there is no need to save any registers before calling them. */ | ||
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.text; | ||
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/* Initialize LEDs. */ | ||
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||
ENTRY(_led_init) | ||
LINK 12; | ||
[--SP] = P0; | ||
[--SP] = R0; | ||
[--SP] = R1; | ||
[--SP] = R2; | ||
R1 = PF6|PF7|PF8|PF9|PF10|PF11 (Z); | ||
R2 = ~R1; | ||
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||
P0.H = hi(PORTF_FER); | ||
P0.L = lo(PORTF_FER); | ||
R0 = W[P0](Z); | ||
SSYNC; | ||
R0 = R0 & R2; | ||
W[P0] = R0.L; | ||
SSYNC; | ||
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||
P0.H = hi(PORTFIO_DIR); | ||
P0.L = lo(PORTFIO_DIR); | ||
R0 = W[P0](Z); | ||
SSYNC; | ||
R0 = R0 | R1; | ||
W[P0] = R0.L; | ||
SSYNC; | ||
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||
P0.H = hi(PORTFIO_INEN); | ||
P0.L = lo(PORTFIO_INEN); | ||
R0 = W[P0](Z); | ||
SSYNC; | ||
R0 = R0 & R2; | ||
W[P0] = R0.L; | ||
SSYNC; | ||
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||
R2 = [SP++]; | ||
R1 = [SP++]; | ||
R0 = [SP++]; | ||
P0 = [SP++]; | ||
UNLINK; | ||
RTS; | ||
.size _led_init, .-_led_init | ||
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||
/* Set one LED on. Leave other LEDs unchanged. | ||
It expects the LED number passed through R0. */ | ||
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ENTRY(_led_on) | ||
LINK 12; | ||
[--SP] = P0; | ||
[--SP] = R1; | ||
CALL _led_init; | ||
R1 = 1; | ||
R0 += 5; | ||
R1 <<= R0; | ||
P0.H = hi(PORTFIO); | ||
P0.L = lo(PORTFIO); | ||
R0 = W[P0](Z); | ||
SSYNC; | ||
R0 = R0 | R1; | ||
W[P0] = R0.L; | ||
SSYNC; | ||
R1 = [SP++]; | ||
P0 = [SP++]; | ||
UNLINK; | ||
RTS; | ||
.size _led_on, .-_led_on | ||
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/* Set one LED off. Leave other LEDs unchanged. */ | ||
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ENTRY(_led_off) | ||
LINK 12; | ||
[--SP] = P0; | ||
[--SP] = R1; | ||
CALL _led_init; | ||
R1 = 1; | ||
R0 += 5; | ||
R1 <<= R0; | ||
R1 = ~R1; | ||
P0.H = hi(PORTFIO); | ||
P0.L = lo(PORTFIO); | ||
R0 = W[P0](Z); | ||
SSYNC; | ||
R0 = R0 & R1; | ||
W[P0] = R0.L; | ||
SSYNC; | ||
R1 = [SP++]; | ||
P0 = [SP++]; | ||
UNLINK; | ||
RTS; | ||
.size _led_off, .-_led_off | ||
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/* Toggle one LED. Leave other LEDs unchanged. */ | ||
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ENTRY(_led_toggle) | ||
LINK 12; | ||
[--SP] = P0; | ||
[--SP] = R1; | ||
CALL _led_init; | ||
R1 = 1; | ||
R0 += 5; | ||
R1 <<= R0; | ||
P0.H = hi(PORTFIO); | ||
P0.L = lo(PORTFIO); | ||
R0 = W[P0](Z); | ||
SSYNC; | ||
R0 = R0 ^ R1; | ||
W[P0] = R0.L; | ||
SSYNC; | ||
R1 = [SP++]; | ||
P0 = [SP++]; | ||
UNLINK; | ||
RTS; | ||
.size _led_toggle, .-_led_toggle | ||
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/* Display the number using LEDs in binary format. */ | ||
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ENTRY(_led_disp_num) | ||
LINK 12; | ||
[--SP] = P0; | ||
[--SP] = R1; | ||
[--SP] = R2; | ||
CALL _led_init; | ||
R1 = 0x3f(X); | ||
R0 = R0 & R1; | ||
R2 = 6(X); | ||
R0 <<= R2; | ||
R1 <<= R2; | ||
P0.H = hi(PORTFIO); | ||
P0.L = lo(PORTFIO); | ||
R2 = W[P0](Z); | ||
SSYNC; | ||
R1 = ~R1; | ||
R2 = R2 & R1; | ||
R2 = R2 | R0; | ||
W[P0] = R2.L; | ||
SSYNC; | ||
R2 = [SP++]; | ||
R1 = [SP++]; | ||
P0 = [SP++]; | ||
UNLINK; | ||
RTS; | ||
.size _led_disp_num, .-_led_disp_num | ||
|
||
/* Toggle the number using LEDs in binary format. */ | ||
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||
ENTRY(_led_toggle_num) | ||
LINK 12; | ||
[--SP] = P0; | ||
[--SP] = R1; | ||
[--SP] = R2; | ||
CALL _led_init; | ||
R1 = 0x3f(X); | ||
R0 = R0 & R1; | ||
R1 = 6(X); | ||
R0 <<= R1; | ||
P0.H = hi(PORTFIO); | ||
P0.L = lo(PORTFIO); | ||
R1 = W[P0](Z); | ||
SSYNC; | ||
R1 = R1 ^ R0; | ||
W[P0] = R1.L; | ||
SSYNC; | ||
R2 = [SP++]; | ||
R1 = [SP++]; | ||
P0 = [SP++]; | ||
UNLINK; | ||
RTS; | ||
.size _led_toggle_num, .-_led_toggle_num | ||
|
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