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For backlights that have a wide control, support skipping steps.

Browse source 
the rocker, x3ii, and x20 now take advantage of this, and fades
are far faster now.

Change-Id: Iceb1a5a6c1d1389c3fdb859b32016b5114a80a22
This commit is contained in:
Solomon Peachy 2020-10-01 22:43:54 -04:00
parent 9ee618e889
commit b5cb99a7bf
4 changed files with 28 additions and 3 deletions
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22
firmware/backlight-sw-fading.c
View file

@ -27,6 +27,10 @@
#include "backlight.h"
#include "backlight-sw-fading.h"
#ifndef BRIGHTNESS_STEP
#define BRIGHTNESS_STEP 1
#endif
/* To adapt a target do:
* - make sure backlight_hw_on doesn't set the brightness to something other than
* the previous value (lowest brightness in most cases)
@ -46,7 +50,14 @@ static bool _backlight_fade_up(void)
{
if (LIKELY(current_brightness < backlight_brightness))
{
#if BRIGHTNESS_STEP == 1
backlight_hw_brightness(++current_brightness);
#else
current_brightness += BRIGHTNESS_STEP;
if (current_brightness > MAX_BRIGHTNESS_SETTING)
current_brightness = MAX_BRIGHTNESS_SETTING;
backlight_hw_brightness(current_brightness);
#endif
}
return(current_brightness >= backlight_brightness);
}
@ -56,13 +67,24 @@ static bool _backlight_fade_down(void)
{
if (LIKELY(current_brightness > MIN_BRIGHTNESS_SETTING))
{
#if BRIGHTNESS_STEP == 1
backlight_hw_brightness(--current_brightness);
#else
current_brightness -= BRIGHTNESS_STEP;
if (current_brightness < MIN_BRIGHTNESS_SETTING)
current_brightness = MIN_BRIGHTNESS_SETTING;
backlight_hw_brightness(current_brightness);
#endif
return false;
}
else
{
/* decrement once more, since backlight is off */
#if BRIGHTNESS_STEP == 1
current_brightness--;
#else
current_brightness=MIN_BRIGHTNESS_SETTING -1;
#endif
backlight_hw_off();
return true;
}

3
firmware/export/config/agptekrocker.h
View file

@ -51,10 +51,11 @@
#define HAVE_BACKLIGHT_BRIGHTNESS
/* Main LCD backlight brightness range and defaults: the backlight driver
* has levels from 0 to 2555. But 0 is off so start at 1.
* has levels from 0 to 255. But 0 is off so start at 1.
*/
#define MIN_BRIGHTNESS_SETTING 1
#define MAX_BRIGHTNESS_SETTING 255
#define BRIGHTNESS_STEP 5
#define DEFAULT_BRIGHTNESS_SETTING 70
/* Which backlight fading type? */

3
firmware/export/config/xduoox20.h
View file

@ -48,10 +48,11 @@
#define HAVE_BACKLIGHT_BRIGHTNESS
/* Main LCD backlight brightness range and defaults: the backlight driver
* has levels from 0 to 2555. But 0 is off so start at 1.
* has levels from 0 to 255. But 0 is off so start at 1.
*/
#define MIN_BRIGHTNESS_SETTING 1
#define MAX_BRIGHTNESS_SETTING 255
#define BRIGHTNESS_STEP 5
#define DEFAULT_BRIGHTNESS_SETTING 70
/* Which backlight fading type? */

3
firmware/export/config/xduoox3ii.h
View file

@ -48,10 +48,11 @@
#define HAVE_BACKLIGHT_BRIGHTNESS
/* Main LCD backlight brightness range and defaults: the backlight driver
* has levels from 0 to 2555. But 0 is off so start at 1.
* has levels from 0 to 255. But 0 is off so start at 1.
*/
#define MIN_BRIGHTNESS_SETTING 1
#define MAX_BRIGHTNESS_SETTING 255
#define BRIGHTNESS_STEP 5
#define DEFAULT_BRIGHTNESS_SETTING 70
/* Which backlight fading type? */