Harald Welte | 2819e9c | 2017-02-03 07:46:01 +0100 | [diff] [blame^] | 1 | /* Code to read/track the status of the WWAN LEDs of attached modems |
| 2 | * |
| 3 | * Depending on the board this is running on, it might be possible |
| 4 | * for the controller to read the status of the WWAN LED output lines of |
| 5 | * the cellular modem. If the board supports this, it sets the |
| 6 | * PIN_WWAN1 and/or PIN_WWAN2 defines in its board.h file. |
| 7 | */ |
| 8 | |
| 9 | #include "board.h" |
| 10 | #include "wwan_led.h" |
| 11 | |
| 12 | #ifdef PIN_WWAN1 |
| 13 | static const Pin pin_wwan1 = PIN_WWAN1; |
| 14 | |
| 15 | static void wwan1_irqhandler(const Pin *pPin) |
| 16 | { |
| 17 | int active = wwan_led_active(1); |
| 18 | |
| 19 | TRACE_INFO("WWAN1 LED %u\r\n", active); |
| 20 | |
| 21 | /* TODO: notify host via USB */ |
| 22 | } |
| 23 | #endif |
| 24 | |
| 25 | #ifdef PIN_WWAN2 |
| 26 | static const Pin pin_wwan2 = PIN_WWAN2; |
| 27 | |
| 28 | static void wwan2_irqhandler(const Pin *pPin) |
| 29 | { |
| 30 | int active = wwan_led_active(2); |
| 31 | TRACE_INFO("WWAN2 LED %u\r\n", active); |
| 32 | |
| 33 | /* TODO: notify host via USB */ |
| 34 | } |
| 35 | #endif |
| 36 | |
| 37 | /* determine if a tiven WWAN led is currently active or not */ |
| 38 | int wwan_led_active(int wwan) |
| 39 | { |
| 40 | const Pin *pin; |
| 41 | int active; |
| 42 | |
| 43 | switch (wwan) { |
| 44 | #ifdef PIN_WWAN1 |
| 45 | case 1: |
| 46 | pin = &pin_wwan1; |
| 47 | break; |
| 48 | #endif |
| 49 | #ifdef PIN_WWAN2 |
| 50 | case 2: |
| 51 | pin = &pin_wwan2; |
| 52 | break; |
| 53 | #endif |
| 54 | default: |
| 55 | return -1; |
| 56 | } |
| 57 | |
| 58 | active = PIO_Get(&pin_wwan1) ? 0 : 1; |
| 59 | return active; |
| 60 | } |
| 61 | |
| 62 | int wwan_led_init(void) |
| 63 | { |
| 64 | int num_leds = 0; |
| 65 | |
| 66 | #ifdef PIN_WWAN1 |
| 67 | PIO_Configure(&pin_wwan1, 1); |
| 68 | PIO_ConfigureIt(&pin_wwan1, wwan1_irqhandler); |
| 69 | PIO_EnableIt(&pin_wwan1); |
| 70 | num_leds++; |
| 71 | #endif |
| 72 | |
| 73 | #ifdef PIN_WWAN2 |
| 74 | PIO_Configure(&pin_wwan2, 1); |
| 75 | PIO_ConfigureIt(&pin_wwan2, wwan2_irqhandler); |
| 76 | PIO_EnableIt(&pin_wwan2); |
| 77 | num_leds++; |
| 78 | #endif |
| 79 | return num_leds; |
| 80 | } |