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142 lines
3.3 KiB
142 lines
3.3 KiB
/* |
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* Copyright (c) 2020 The ZMK Contributors |
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* |
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* SPDX-License-Identifier: MIT |
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*/ |
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#include <kernel.h> |
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#include <init.h> |
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#include <device.h> |
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#include <devicetree.h> |
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#include <logging/log.h> |
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL); |
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#include <drivers/display.h> |
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#include <lvgl.h> |
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#include <zmk/event_manager.h> |
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#include <zmk/events/activity_state_changed.h> |
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#include <zmk/display/status_screen.h> |
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#define ZMK_DISPLAY_NAME CONFIG_LVGL_DISPLAY_DEV_NAME |
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static const struct device *display; |
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static bool initialized = false; |
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static lv_obj_t *screen; |
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__attribute__((weak)) lv_obj_t *zmk_display_status_screen() { return NULL; } |
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void display_tick_cb(struct k_work *work) { lv_task_handler(); } |
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#define TICK_MS 10 |
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K_WORK_DEFINE(display_tick_work, display_tick_cb); |
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#if IS_ENABLED(CONFIG_ZMK_DISPLAY_WORK_QUEUE_DEDICATED) |
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K_THREAD_STACK_DEFINE(display_work_stack_area, CONFIG_ZMK_DISPLAY_DEDICATED_THREAD_STACK_SIZE); |
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static struct k_work_q display_work_q; |
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#endif |
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struct k_work_q *zmk_display_work_q() { |
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#if IS_ENABLED(CONFIG_ZMK_DISPLAY_WORK_QUEUE_DEDICATED) |
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return &display_work_q; |
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#else |
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return &k_sys_work_q; |
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#endif |
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} |
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void display_timer_cb() { |
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lv_tick_inc(TICK_MS); |
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k_work_submit_to_queue(zmk_display_work_q(), &display_tick_work); |
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} |
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void blank_display_cb(struct k_work *work) { display_blanking_on(display); } |
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void unblank_display_cb(struct k_work *work) { display_blanking_off(display); } |
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K_TIMER_DEFINE(display_timer, display_timer_cb, NULL); |
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K_WORK_DEFINE(blank_display_work, blank_display_cb); |
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K_WORK_DEFINE(unblank_display_work, unblank_display_cb); |
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static void start_display_updates() { |
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if (display == NULL) { |
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return; |
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} |
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k_work_submit_to_queue(zmk_display_work_q(), &unblank_display_work); |
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k_timer_start(&display_timer, K_MSEC(TICK_MS), K_MSEC(TICK_MS)); |
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} |
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static void stop_display_updates() { |
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if (display == NULL) { |
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return; |
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} |
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k_work_submit_to_queue(zmk_display_work_q(), &blank_display_work); |
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k_timer_stop(&display_timer); |
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} |
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int zmk_display_is_initialized() { return initialized; } |
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int zmk_display_init() { |
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LOG_DBG(""); |
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display = device_get_binding(ZMK_DISPLAY_NAME); |
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if (display == NULL) { |
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LOG_ERR("Failed to find display device"); |
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return -EINVAL; |
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} |
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#if IS_ENABLED(CONFIG_ZMK_DISPLAY_WORK_QUEUE_DEDICATED) |
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k_work_q_start(&display_work_q, display_work_stack_area, |
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K_THREAD_STACK_SIZEOF(display_work_stack_area), |
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CONFIG_ZMK_DISPLAY_DEDICATED_THREAD_PRIORITY); |
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#endif |
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screen = zmk_display_status_screen(); |
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if (screen == NULL) { |
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LOG_ERR("No status screen provided"); |
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return 0; |
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} |
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lv_scr_load(screen); |
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start_display_updates(); |
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initialized = true; |
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LOG_DBG(""); |
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return 0; |
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} |
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int display_event_handler(const zmk_event_t *eh) { |
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struct zmk_activity_state_changed *ev = as_zmk_activity_state_changed(eh); |
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if (ev == NULL) { |
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return -ENOTSUP; |
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} |
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switch (ev->state) { |
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case ZMK_ACTIVITY_ACTIVE: |
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start_display_updates(); |
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break; |
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case ZMK_ACTIVITY_IDLE: |
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case ZMK_ACTIVITY_SLEEP: |
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stop_display_updates(); |
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break; |
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default: |
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LOG_WRN("Unhandled activity state: %d", ev->state); |
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return -EINVAL; |
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} |
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return 0; |
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} |
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ZMK_LISTENER(display, display_event_handler); |
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ZMK_SUBSCRIPTION(display, zmk_activity_state_changed);
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