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feat(display): Add device runtime PM handling.

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* Properly get/put the display device as needed when we start/ stop
  using it as part of our high level app logic.
This commit is contained in:
Peter Johanson 2023-04-23 07:02:11 +00:00
parent 3ddaac19a1
commit 6c1d6fb3e4
1 changed files with 11 additions and 0 deletions

11
app/src/display/main.c
View file

@ -7,6 +7,7 @@
#include <zephyr/kernel.h>
#include <zephyr/init.h>
#include <zephyr/device.h>
#include <zephyr/pm/device_runtime.h>
#include <zephyr/devicetree.h>
#include <zephyr/logging/log.h>
@ -55,7 +56,16 @@ void display_timer_cb() { k_work_submit_to_queue(zmk_display_work_q(), &display_
K_TIMER_DEFINE(display_timer, display_timer_cb, NULL);
void unblank_display_cb(struct k_work *work) {
int err = pm_device_runtime_get(display);
if (err < 0) {
LOG_ERR("Failed to get the display device PM (%d)", err);
return;
}
display_blanking_off(display);
lv_obj_invalidate(lv_scr_act());
k_timer_start(&display_timer, K_MSEC(TICK_MS), K_MSEC(TICK_MS));
}
@ -64,6 +74,7 @@ void unblank_display_cb(struct k_work *work) {
void blank_display_cb(struct k_work *work) {
k_timer_stop(&display_timer);
display_blanking_on(display);
pm_device_runtime_put(display);
}
K_WORK_DEFINE(blank_display_work, blank_display_cb);
K_WORK_DEFINE(unblank_display_work, unblank_display_cb);