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modules: lvgl: support the frame buffer address and stride alignment

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Add support for the frame buffer address and stride alignment.
If user set the CONFIG_LV_DRAW_BUF_ALIGN to not be 4, the buffers
shall be allocated aoocrdingly.
If user set the CONFIG_LV_DRAW_BUF_STRIDE_ALIGN to not be 1, the
methods of flushing the display shall set the pitch accordingly.

Signed-off-by: Kate Wang <yumeng.wang@nxp.com>
This commit is contained in:
Kate Wang
2025-05-14 21:14:50 +08:00
committed by Dan Kalowsky
parent 826b1187f7
commit 52e08918ff
5 changed files with 21 additions and 19 deletions
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32
modules/lvgl/lvgl.c
View File

@@ -27,6 +27,8 @@ struct lvgl_disp_data disp_data[DT_ZEPHYR_DISPLAYS_COUNT] = {{
.blanking_on = false,
}};
#define DISPLAY_BUFFER_ALIGN(alignbytes) __aligned(alignbytes)
#if DT_HAS_COMPAT_STATUS_OKAY(zephyr_displays)
#define DISPLAY_NODE(n) DT_ZEPHYR_DISPLAY(n)
#elif DT_HAS_CHOSEN(zephyr_display)
@@ -77,21 +79,21 @@ static uint8_t *mono_vtile_buf_p[DT_ZEPHYR_DISPLAYS_COUNT] = {NULL};
/* prevent unaligned memory accesses. */
/* clang-format off */
#define LV_BUFFERS_DEFINE(n) \
static uint8_t buf0_##n[BUFFER_SIZE(n)] \
IF_ENABLED(CONFIG_LV_Z_VDB_CUSTOM_SECTION, (Z_GENERIC_SECTION(.lvgl_buf))) \
__aligned(CONFIG_LV_Z_VDB_ALIGN); \
\
IF_ENABLED(CONFIG_LV_Z_DOUBLE_VDB, ( \
static uint8_t buf1_##n[BUFFER_SIZE(n)] \
IF_ENABLED(CONFIG_LV_Z_VDB_CUSTOM_SECTION, (Z_GENERIC_SECTION(.lvgl_buf))) \
__aligned(CONFIG_LV_Z_VDB_ALIGN); \
)) \
\
IF_ENABLED(ALLOC_MONOCHROME_CONV_BUFFER, ( \
static uint8_t mono_vtile_buf_##n[BUFFER_SIZE(n)] \
IF_ENABLED(CONFIG_LV_Z_VDB_CUSTOM_SECTION, (Z_GENERIC_SECTION(.lvgl_buf))) \
__aligned(CONFIG_LV_Z_VDB_ALIGN); \
#define LV_BUFFERS_DEFINE(n) \
static DISPLAY_BUFFER_ALIGN(LV_DRAW_BUF_ALIGN) uint8_t buf0_##n[BUFFER_SIZE(n)] \
IF_ENABLED(CONFIG_LV_Z_VDB_CUSTOM_SECTION, (Z_GENERIC_SECTION(.lvgl_buf))) \
__aligned(CONFIG_LV_Z_VDB_ALIGN); \
\
IF_ENABLED(CONFIG_LV_Z_DOUBLE_VDB, ( \
static DISPLAY_BUFFER_ALIGN(LV_DRAW_BUF_ALIGN) uint8_t buf1_##n[BUFFER_SIZE(n)] \
IF_ENABLED(CONFIG_LV_Z_VDB_CUSTOM_SECTION, (Z_GENERIC_SECTION(.lvgl_buf))) \
__aligned(CONFIG_LV_Z_VDB_ALIGN); \
)) \
\
IF_ENABLED(ALLOC_MONOCHROME_CONV_BUFFER, ( \
static uint8_t mono_vtile_buf_##n[BUFFER_SIZE(n)] \
IF_ENABLED(CONFIG_LV_Z_VDB_CUSTOM_SECTION, (Z_GENERIC_SECTION(.lvgl_buf))) \
__aligned(CONFIG_LV_Z_VDB_ALIGN); \
))
FOR_EACH(LV_BUFFERS_DEFINE, (), LV_DISPLAYS_IDX_LIST);

2
modules/lvgl/lvgl_display_16bit.c
View File

@@ -20,7 +20,7 @@ void lvgl_flush_cb_16bit(lv_display_t *display, const lv_area_t *area, uint8_t *
flush.y = area->y1;
flush.desc.buf_size = w * 2U * h;
flush.desc.width = w;
flush.desc.pitch = w;
flush.desc.pitch = ROUND_UP(w * 2U, LV_DRAW_BUF_STRIDE_ALIGN) / 2U;
flush.desc.height = h;
flush.buf = (void *)px_map;

2
modules/lvgl/lvgl_display_24bit.c
View File

@@ -20,7 +20,7 @@ void lvgl_flush_cb_24bit(lv_display_t *display, const lv_area_t *area, uint8_t *
flush.y = area->y1;
flush.desc.buf_size = w * 3U * h;
flush.desc.width = w;
flush.desc.pitch = w;
flush.desc.pitch = ROUND_UP(w * 3U, LV_DRAW_BUF_STRIDE_ALIGN) / 3U;
flush.desc.height = h;
flush.buf = (void *)px_map;

2
modules/lvgl/lvgl_display_32bit.c
View File

@@ -20,7 +20,7 @@ void lvgl_flush_cb_32bit(lv_display_t *display, const lv_area_t *area, uint8_t *
flush.y = area->y1;
flush.desc.buf_size = w * 4U * h;
flush.desc.width = w;
flush.desc.pitch = w;
flush.desc.pitch = ROUND_UP(w * 4U, LV_DRAW_BUF_STRIDE_ALIGN) / 4U;
flush.desc.height = h;
flush.buf = (void *)px_map;
lvgl_flush_display(&flush);

2
modules/lvgl/lvgl_display_8bit.c
View File

@@ -19,7 +19,7 @@ void lvgl_flush_cb_8bit(lv_display_t *display, const lv_area_t *area, uint8_t *p
flush.y = area->y1;
flush.desc.buf_size = w * h;
flush.desc.width = w;
flush.desc.pitch = w;
flush.desc.pitch = ROUND_UP(w, LV_DRAW_BUF_STRIDE_ALIGN);
flush.desc.height = h;
flush.buf = (void *)px_map;