patrick/zephyr
1
0
Fork 0
Code Issues Pull requests Actions 8 Packages Projects Releases Wiki Activity

modules: lvgl: Add support for frame rounder callback

Browse source 
Add support for LVGL rounder callback function. Sometimes,
either the underlying display controller and/or the LCD host
controller might impose restrictions on frame resolution.
For instance, the E1394AA65A display model should impose that
either axis of a frame be multiple of 2 pixels or the Renesas
LCD controller of the DA1469x SoC, should impose that the
stride value, number of bytes between consecutive frame lines,
be multiple of 4 bytes.

Signed-off-by: Ioannis Karachalios <ioannis.karachalios.px@renesas.com>
This commit is contained in:
Ioannis Karachalios 2023-12-20 15:32:39 +02:00 committed by Henrik Brix Andersen
parent 9fc9eb5ddb
commit fce35569b8
3 changed files with 47 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
modules/lvgl/Kconfig
View file

@ -52,6 +52,10 @@ config LV_Z_LOG_LEVEL
default 3 if LV_LOG_LEVEL_USER
default 4 if LV_LOG_LEVEL_TRACE
config LV_Z_USE_ROUNDER_CB
bool
default y if LV_Z_AREA_X_ALIGNMENT_WIDTH != 1 || LV_Z_AREA_Y_ALIGNMENT_WIDTH != 1
config APP_LINK_WITH_LVGL
bool "Link 'app' with LVGL"
default y
@ -107,6 +111,22 @@ config LV_Z_FLUSH_THREAD_PRIO
endif # LV_Z_FLUSH_THREAD
config LV_Z_AREA_X_ALIGNMENT_WIDTH
int "Frame X alignment size"
default 1
help
Number of pixels, X axis should be rounded to. Should be used to override
the current frame dimensions to meet display and/or LCD host
controller requirements. The value must be power of 2.
config LV_Z_AREA_Y_ALIGNMENT_WIDTH
int "Frame Y alignment size"
default 1
help
Number of pixels, Y axis should be rounded to. Should be used to override
the current frame dimensions to meet display and/or LCD host
controller requirements. The value must be power of 2.
rsource "Kconfig.memory"
rsource "Kconfig.input"
rsource "Kconfig.shell"

4
modules/lvgl/include/lvgl_display.h
View file

@ -49,6 +49,10 @@ int set_lvgl_rendering_cb(lv_disp_drv_t *disp_drv);
void lvgl_flush_display(struct lvgl_display_flush *request);
#ifdef CONFIG_LV_Z_USE_ROUNDER_CB
void lvgl_rounder_cb(lv_disp_drv_t *disp_drv, lv_area_t *area);
#endif
#ifdef __cplusplus
}
#endif

26
modules/lvgl/lvgl_display.c
View file

@ -45,6 +45,26 @@ void lvgl_wait_cb(lv_disp_drv_t *disp_drv)
#endif /* CONFIG_LV_Z_FLUSH_THREAD */
#ifdef CONFIG_LV_Z_USE_ROUNDER_CB
void lvgl_rounder_cb(lv_disp_drv_t *disp_drv, lv_area_t *area)
{
#if CONFIG_LV_Z_AREA_X_ALIGNMENT_WIDTH != 1
__ASSERT(POPCOUNT(CONFIG_LV_Z_AREA_X_ALIGNMENT_WIDTH) == 1, "Invalid X alignment width");
area->x1 &= ~(CONFIG_LV_Z_AREA_X_ALIGNMENT_WIDTH - 1);
area->x2 |= (CONFIG_LV_Z_AREA_X_ALIGNMENT_WIDTH - 1);
#endif
#if CONFIG_LV_Z_AREA_Y_ALIGNMENT_WIDTH != 1
__ASSERT(POPCOUNT(CONFIG_LV_Z_AREA_Y_ALIGNMENT_WIDTH) == 1, "Invalid Y alignment width");
area->y1 &= ~(CONFIG_LV_Z_AREA_Y_ALIGNMENT_WIDTH - 1);
area->y2 |= (CONFIG_LV_Z_AREA_Y_ALIGNMENT_WIDTH - 1);
#endif
}
#else
#define lvgl_rounder_cb NULL
#endif
int set_lvgl_rendering_cb(lv_disp_drv_t *disp_drv)
{
int err = 0;
@ -57,7 +77,7 @@ int set_lvgl_rendering_cb(lv_disp_drv_t *disp_drv)
switch (data->cap.current_pixel_format) {
case PIXEL_FORMAT_ARGB_8888:
disp_drv->flush_cb = lvgl_flush_cb_32bit;
disp_drv->rounder_cb = NULL;
disp_drv->rounder_cb = lvgl_rounder_cb;
#ifdef CONFIG_LV_COLOR_DEPTH_32
disp_drv->set_px_cb = NULL;
#else
@ -66,13 +86,13 @@ int set_lvgl_rendering_cb(lv_disp_drv_t *disp_drv)
break;
case PIXEL_FORMAT_RGB_888:
disp_drv->flush_cb = lvgl_flush_cb_24bit;
disp_drv->rounder_cb = NULL;
disp_drv->rounder_cb = lvgl_rounder_cb;
disp_drv->set_px_cb = lvgl_set_px_cb_24bit;
break;
case PIXEL_FORMAT_RGB_565:
case PIXEL_FORMAT_BGR_565:
disp_drv->flush_cb = lvgl_flush_cb_16bit;
disp_drv->rounder_cb = NULL;
disp_drv->rounder_cb = lvgl_rounder_cb;
#ifdef CONFIG_LV_COLOR_DEPTH_16
disp_drv->set_px_cb = NULL;
#else