24a07a1241
The ADSP-BF54x was specifically designed to meet the needs of convergent multimedia applications where system performance and cost are essential ingredients. The integration of multimedia, human interface, and connectivity peripherals combined with increased system bandwidth and on-chip memory provides customers a platform to design the most demanding applications. Since now, ADSP-BF54x will be supported in the Linux kernel and bunch of related drivers such as USB OTG, ATAPI, NAND flash controller, LCD framebuffer, sound, touch screen will be submitted later. Please enjoy the show. Signed-off-by: Roy Huang <roy.huang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
172 lines
2.8 KiB
ArmAsm
172 lines
2.8 KiB
ArmAsm
/****************************************************
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* LED1 ---- PG6 LED2 ---- PG7 *
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* LED3 ---- PG8 LED4 ---- PG9 *
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* LED5 ---- PG10 LED6 ---- PG11 *
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****************************************************/
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#include <linux/linkage.h>
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#include <asm/blackfin.h>
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/* All functions in this file save the registers they uses.
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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)
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LINK 0;
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[--SP] = P0;
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[--SP] = R0;
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[--SP] = R1;
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[--SP] = R2;
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R1 = (PG6|PG7|PG8|PG9|PG10|PG11)(Z);
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R2 = ~R1;
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P0.H = hi(PORTG_FER);
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P0.L = lo(PORTG_FER);
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R0 = W[P0](Z);
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SSYNC;
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R0 = R0 & R2;
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W[P0] = R0.L;
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SSYNC;
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P0.H = hi(PORTG_DIR_SET);
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P0.L = lo(PORTG_DIR_SET);
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W[P0] = R1.L;
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SSYNC;
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P0.H = hi(PORTG_INEN);
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P0.L = lo(PORTG_INEN);
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R0 = W[P0](Z);
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SSYNC;
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R0 = R0 & R2;
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W[P0] = R0.L;
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SSYNC;
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R2 = [SP++];
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R1 = [SP++];
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R0 = [SP++];
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P0 = [SP++];
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RTS;
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.size _led_init, .-_led_init
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/* Set one LED on. Leave other LEDs unchanged.
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It expects the LED number passed through R0. */
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ENTRY(_led_on)
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LINK 0;
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[--SP] = P0;
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[--SP] = R1;
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CALL _led_init;
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R1 = 1;
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R0 += 5;
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R1 <<= R0;
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P0.H = hi(PORTG_SET);
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P0.L = lo(PORTG_SET);
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W[P0] = R1.L;
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SSYNC;
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R1 = [SP++];
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P0 = [SP++];
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UNLINK;
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RTS;
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.size _led_on, .-_led_on
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/* Set one LED off. Leave other LEDs unchanged. */
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ENTRY(_led_off)
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LINK 0;
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[--SP] = P0;
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[--SP] = R1;
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CALL _led_init;
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R1 = 1;
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R0 += 5;
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R1 <<= R0;
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P0.H = hi(PORTG_CLEAR);
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P0.L = lo(PORTG_CLEAR);
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W[P0] = R1.L;
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SSYNC;
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R1 = [SP++];
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P0 = [SP++];
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UNLINK;
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RTS;
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.size _led_off, .-_led_off
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/* Toggle one LED. Leave other LEDs unchanged. */
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ENTRY(_led_toggle)
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LINK 0;
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[--SP] = P0;
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[--SP] = R1;
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CALL _led_init;
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R1 = 1;
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R0 += 5;
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R1 <<= R0;
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P0.H = hi(PORTG);
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P0.L = lo(PORTG);
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R0 = W[P0](Z);
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SSYNC;
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R0 = R0 ^ R1;
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W[P0] = R0.L;
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SSYNC;
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R1 = [SP++];
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P0 = [SP++];
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UNLINK;
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RTS;
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.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)
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LINK 0;
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[--SP] = P0;
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[--SP] = R1;
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[--SP] = R2;
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CALL _led_init;
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R1 = 0x3f(X);
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R0 = R0 & R1;
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R2 = 6(X);
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R0 <<= R2;
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R1 <<= R2;
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P0.H = hi(PORTG);
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P0.L = lo(PORTG);
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R2 = W[P0](Z);
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SSYNC;
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R1 = ~R1;
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R2 = R2 & R1;
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R2 = R2 | R0;
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W[P0] = R2.L;
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SSYNC;
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R2 = [SP++];
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R1 = [SP++];
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P0 = [SP++];
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UNLINK;
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RTS;
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.size _led_disp_num, .-_led_disp_num
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/* Toggle the number using LEDs in binary format. */
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ENTRY(_led_toggle_num)
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LINK 0;
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[--SP] = P0;
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[--SP] = R1;
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[--SP] = R2;
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CALL _led_init;
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R1 = 0x3f(X);
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R0 = R0 & R1;
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R1 = 6(X);
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R0 <<= R1;
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P0.H = hi(PORTG);
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P0.L = lo(PORTG);
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R1 = W[P0](Z);
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SSYNC;
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R1 = R1 ^ R0;
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W[P0] = R1.L;
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SSYNC;
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R2 = [SP++];
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R1 = [SP++];
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P0 = [SP++];
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UNLINK;
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RTS;
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.size _led_toggle_num, .-_led_toggle_num
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