leds-s3c6410.c 2.0 KB

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  1. /*
  2. * linux/arch/arm/mach-omap1/leds-h2p2-debug.c
  3. *
  4. * Copyright 2003 by Texas Instruments Incorporated
  5. *
  6. * There are 16 LEDs on the debug board (all green); four may be used
  7. * for logical 'green', 'amber', 'red', and 'blue' (after "claiming").
  8. *
  9. * The "surfer" expansion board and H2 sample board also have two-color
  10. * green+red LEDs (in parallel), used here for timer and idle indicators.
  11. */
  12. #include <linux/init.h>
  13. #include <linux/kernel_stat.h>
  14. #include <linux/sched.h>
  15. #include <asm/io.h>
  16. #include <asm/hardware.h>
  17. #include <asm/leds.h>
  18. #include <asm/system.h>
  19. #include <asm/mach-types.h>
  20. #include <asm/arch/regs-gpio.h>
  21. #include "leds.h"
  22. #define LED0 S3C_GPN12
  23. #define LED1 S3C_GPN13
  24. #define LED2 S3C_GPN14
  25. #define LED3 S3C_GPN15
  26. #define LED_STATE_ENABLED 1<<0
  27. #define LED_STATE_CLAIMED 1<<1
  28. #define LED_TIMER_ON 1<<2
  29. #define LED_IDLE 1<<3
  30. void smdk6400_leds_event(led_event_t evt)
  31. {
  32. unsigned long flags;
  33. static u16 led_state, hw_led_state;
  34. local_irq_save(flags);
  35. if (!(led_state & LED_STATE_ENABLED) && evt != led_start)
  36. goto done;
  37. switch (evt) {
  38. case led_start:
  39. led_state |= LED_STATE_ENABLED;
  40. break;
  41. case led_stop:
  42. case led_halted:
  43. /* all leds off during suspend or shutdown */
  44. led_state &= ~LED_STATE_ENABLED;
  45. break;
  46. case led_claim:
  47. led_state |= LED_STATE_CLAIMED;
  48. hw_led_state = 0;
  49. break;
  50. case led_release:
  51. led_state &= ~LED_STATE_CLAIMED;
  52. break;
  53. #ifdef CONFIG_LEDS_TIMER
  54. case led_timer:
  55. led_state ^= LED_TIMER_ON;
  56. if (led_state & LED_TIMER_ON)
  57. s3c_gpio_setpin(LED0, 1);
  58. else {
  59. s3c_gpio_setpin(LED0, 0);
  60. }
  61. break;
  62. #endif
  63. #ifdef CONFIG_LEDS_CPU
  64. case led_idle_start:
  65. s3c_gpio_setpin(LED1, 1);
  66. break;
  67. case led_idle_end:
  68. s3c_gpio_setpin(LED1, 0);
  69. break;
  70. #endif
  71. case led_green_on:
  72. break;
  73. case led_green_off:
  74. break;
  75. case led_amber_on:
  76. break;
  77. case led_amber_off:
  78. break;
  79. case led_red_on:
  80. break;
  81. case led_red_off:
  82. break;
  83. case led_blue_on:
  84. break;
  85. case led_blue_off:
  86. break;
  87. default:
  88. break;
  89. }
  90. done:
  91. local_irq_restore(flags);
  92. }