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Fix STM32LTDC orientation and DMA2D acceleration

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This commit is contained in:
inmarket 2015-11-25 12:20:56 +10:00
parent e5ec9415d1
commit 6900dfc0ab
2 changed files with 98 additions and 96 deletions
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145
drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c
View file

@ -102,17 +102,13 @@ typedef struct ltdcConfig {
/* Driver exported functions. */
/*===========================================================================*/
static void _ltdc_reload(void)
{
static void _ltdc_reload(void) {
LTDC->SRCR |= LTDC_SRCR_IMR;
while (LTDC->SRCR & (LTDC_SRCR_IMR | LTDC_SRCR_VBR)) {
while (LTDC->SRCR & (LTDC_SRCR_IMR | LTDC_SRCR_VBR))
gfxYield();
}
}
static void _ltdc_layer_init(LTDC_Layer_TypeDef* pLayReg, const ltdcLayerConfig* pCfg)
{
static void _ltdc_layer_init(LTDC_Layer_TypeDef* pLayReg, const ltdcLayerConfig* pCfg) {
static const uint8_t fmt2Bpp[] = {
4, /* LTDC_FMT_ARGB8888 */
3, /* LTDC_FMT_RGB888 */
@ -151,8 +147,7 @@ static void _ltdc_layer_init(LTDC_Layer_TypeDef* pLayReg, const ltdcLayerConfig*
pLayReg->CR = (pLayReg->CR & ~LTDC_LEF_MASK) | ((uint32_t)pCfg->layerflags & LTDC_LEF_MASK);
}
static void _ltdc_init(void)
{
static void _ltdc_init(void) {
// Set up the display scanning
uint32_t hacc, vacc;
@ -161,9 +156,9 @@ static void _ltdc_init(void)
RCC->APB2RSTR = 0;
// Enable the LTDC clock
#if defined(STM32F4)
#if defined(STM32F4) || defined(STM32F429_439xx) || defined(STM32F429xx)
RCC->DCKCFGR = (RCC->DCKCFGR & ~RCC_DCKCFGR_PLLSAIDIVR) | (1 << 16);
#elif defined(STM32F7)
#elif defined(STM32F7) || defined(STM32F746xx)
RCC->DCKCFGR1 = (RCC->DCKCFGR1 & ~RCC_DCKCFGR1_PLLSAIDIVR) | (1 << 16);
#else
#error STM32LTDC driver not implemented for your platform
@ -219,8 +214,7 @@ static void _ltdc_init(void)
_ltdc_reload();
}
LLDSPEC bool_t gdisp_lld_init(GDisplay* g)
{
LLDSPEC bool_t gdisp_lld_init(GDisplay* g) {
// Initialize the private structure
g->priv = 0;
g->board = 0;
@ -253,8 +247,7 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay* g)
return TRUE;
}
LLDSPEC void gdisp_lld_draw_pixel(GDisplay* g)
{
LLDSPEC void gdisp_lld_draw_pixel(GDisplay* g) {
unsigned pos;
#if GDISP_NEED_CONTROL
@ -277,11 +270,14 @@ LLDSPEC void gdisp_lld_draw_pixel(GDisplay* g)
pos = PIXIL_POS(g, g->p.x, g->p.y);
#endif
#if LTDC_USE_DMA2D
while(DMA2D->CR & DMA2D_CR_START);
#endif
PIXEL_ADDR(g, pos)[0] = gdispColor2Native(g->p.color);
}
LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g)
{
LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g) {
unsigned pos;
LLDCOLOR_TYPE color;
@ -305,24 +301,28 @@ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g)
pos = PIXIL_POS(g, g->p.x, g->p.y);
#endif
#if LTDC_USE_DMA2D
while(DMA2D->CR & DMA2D_CR_START);
#endif
color = PIXEL_ADDR(g, pos)[0];
return gdispNative2Color(color);
}
#if GDISP_NEED_CONTROL
LLDSPEC void gdisp_lld_control(GDisplay* g)
{
LLDSPEC void gdisp_lld_control(GDisplay* g) {
switch(g->p.x) {
case GDISP_CONTROL_POWER:
// Don't do anything if it is the same power mode
if (g->g.Powermode == (powermode_t)g->p.ptr)
return;
switch((powermode_t)g->p.ptr) {
case powerOff: case powerOn: case powerSleep: case powerDeepSleep:
// TODO
break;
default:
return;
}
g->g.Powermode = (powermode_t)g->p.ptr;
return;
@ -353,7 +353,6 @@ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g)
default:
return;
}
g->g.Orientation = (orientation_t)g->p.ptr;
return;
@ -373,8 +372,7 @@ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g)
#endif
#if LTDC_USE_DMA2D
static void dma2d_init(void)
{
static void dma2d_init(void) {
// Enable DMA2D clock
RCC->AHB1ENR |= RCC_AHB1ENR_DMA2DEN;
@ -396,91 +394,88 @@ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g)
// Uses p.x,p.y p.cx,p.cy p.color
LLDSPEC void gdisp_lld_fill_area(GDisplay* g)
{
uint32_t reg_omar = 0;
uint32_t reg_oor = 0;
uint32_t reg_nlr = 0;
uint32_t pos;
uint32_t lineadd;
uint32_t shape;
// Wait until DMA2D is ready
while (1) {
if (!(DMA2D->CR & DMA2D_CR_START)) {
break;
}
}
while(DMA2D->CR & DMA2D_CR_START);
// Calculate pixel positions and stuff like that
#if GDISP_NEED_CONTROL
switch(g->g.Orientation) {
case GDISP_ROTATE_0:
default:
reg_omar = g->p.y * g->g.Width * LTDC_PIXELBYTES + g->p.x * LTDC_PIXELBYTES + (uint32_t)driverCfg.bglayer.frame;
reg_oor = g->g.Width - g->p.cx;
reg_nlr = (g->p.cx << 16) | (g->p.cy);
pos = PIXIL_POS(g, g->p.x, g->p.y);
lineadd = g->g.Width - g->p.cx;
shape = (g->p.cx << 16) | (g->p.cy);
break;
case GDISP_ROTATE_90:
pos = PIXIL_POS(g, g->p.y, g->g.Width-g->p.x-g->p.cx);
lineadd = g->g.Height - g->p.cy;
shape = (g->p.cy << 16) | (g->p.cx);
break;
case GDISP_ROTATE_180:
reg_omar = g->g.Width * (g->g.Height - g->p.y - g->p.cy) * LTDC_PIXELBYTES + (g->g.Width - g->p.x - g->p.cx) * LTDC_PIXELBYTES + (uint32_t)driverCfg.bglayer.frame;
reg_oor = g->g.Width - g->p.cx;
reg_nlr = (g->p.cy << 16) | (g->p.cx);
pos = PIXIL_POS(g, g->g.Width-g->p.x-g->p.cx, g->g.Height-g->p.y-g->p.cy);
lineadd = g->g.Width - g->p.cx;
shape = (g->p.cx << 16) | (g->p.cy);
break;
case GDISP_ROTATE_270:
pos = PIXIL_POS(g, g->g.Height-g->p.y-g->p.cy, g->p.x);
lineadd = g->g.Height - g->p.cy;
shape = (g->p.cy << 16) | (g->p.cx);
break;
}
#else
reg_omar = g->p.y * g->g.Width * LTDC_PIXELBYTES + g->p.x * LTDC_PIXELBYTES + (uint32_t)driverCfg.bglayer.frame;
reg_oor = g->g.Width - g->p.cx;
reg_nlr = (g->p.cx << 16) | (g->p.cy);
pos = PIXIL_POS(g, g->p.x, g->p.y);
lineadd = g->g.Width - g->p.cx;
shape = (g->p.cx << 16) | (g->p.cy);
#endif
// Output memory address register
DMA2D->OMAR = reg_omar;
// Output offset register (in pixels)
DMA2D->OOR = reg_oor;
// PL (pixel per lines to be transferred); NL (number of lines)
DMA2D->NLR = reg_nlr;
// Output color register
// Start the DMA2D
DMA2D->OMAR = (uint32_t)PIXEL_ADDR(g, pos);
DMA2D->OOR = lineadd;
DMA2D->NLR = shape;
DMA2D->OCOLR = (uint32_t)(gdispColor2Native(g->p.color));
// Set MODE to R2M and Start the process
DMA2D->CR = DMA2D_CR_MODE_R2M | DMA2D_CR_START;
}
/* Oops - the DMA2D only supports GDISP_ROTATE_0.
*
* Where the width is 1 we can trick it for other orientations.
* That is worthwhile as a width of 1 is common. For other
* situations we need to fall back to pixel pushing.
*
* Additionally, although DMA2D can translate color formats
* it can only do it for a small range of formats. For any
* other formats we also need to fall back to pixel pushing.
*
* As the code to actually do all that for other than the
* simplest case (orientation == GDISP_ROTATE_0 and
* GDISP_PIXELFORMAT == GDISP_LLD_PIXELFORMAT) is very complex
* we will always pixel push for now. In practice that is OK as
* access to the framebuffer is fast - probably faster than DMA2D.
* It just uses more CPU.
*/
#if GDISP_HARDWARE_BITFILLS
// Uses p.x,p.y p.cx,p.cy p.x1,p.y1 (=srcx,srcy) p.x2 (=srccx), p.ptr (=buffer)
LLDSPEC void gdisp_lld_blit_area(GDisplay* g)
{
LLDSPEC void gdisp_lld_blit_area(GDisplay* g) {
// Wait until DMA2D is ready
while (1) {
if (!(DMA2D->CR & DMA2D_CR_START)) {
break;
}
}
while(DMA2D->CR & DMA2D_CR_START);
// Foreground memory address register
DMA2D->FGMAR = g->p.y1 * g->p.x2 * LTDC_PIXELBYTES + g->p.x1 * LTDC_PIXELBYTES + (uint32_t)g->p.ptr;
// Foreground offset register (expressed in pixels)
// Source setup
DMA2D->FGMAR = LTDC_PIXELBYTES * (g->p.y1 * g->p.x2 + g->p.x1) + (uint32_t)g->p.ptr;
DMA2D->FGOR = g->p.x2 - g->p.cx;
// Output memory address register
DMA2D->OMAR = g->p.y * g->g.Width * LTDC_PIXELBYTES + g->p.x * LTDC_PIXELBYTES + (uint32_t)driverCfg.bglayer.frame;
// Output offset register (expressed in pixels)
// Output setup
DMA2D->OMAR = (uint32_t)PIXEL_ADDR(g, PIXIL_POS(g, g->p.x, g->p.y));
DMA2D->OOR = g->g.Width - g->p.cx;
// PL (pixel per lines to be transferred); NL (number of lines)
DMA2D->NLR = (g->p.cx << 16) | (g->p.cy);
// Set MODE to M2M and Start the process
DMA2D->CR = DMA2D_CR_MODE_M2M | DMA2D_CR_START;
}
#endif
#endif /* LTDC_USE_DMA2D */
#endif /* GFX_USE_GDISP */

15
drivers/gdisp/STM32LTDC/gdisp_lld_config.h
View file

@ -14,11 +14,15 @@
/* Driver hardware support. */
/*===========================================================================*/
#define LTDC_USE_DMA2D FALSE // Currently has display artifacts
#define LTDC_USE_DMA2D TRUE
#define GDISP_HARDWARE_DRAWPIXEL TRUE
#define GDISP_HARDWARE_PIXELREAD TRUE
#define GDISP_HARDWARE_CONTROL TRUE
// Both these pixel formats are supported - pick one.
// RGB565 obviously is faster and uses less RAM but with lower color resolution than RGB888
#define GDISP_LLD_PIXELFORMAT GDISP_PIXELFORMAT_RGB565
//#define GDISP_LLD_PIXELFORMAT GDISP_PIXELFORMAT_RGB888
/*===========================================================================*/
@ -26,11 +30,14 @@
/*===========================================================================*/
#if LTDC_USE_DMA2D
// DMA2D supports accelerated fills
#define GDISP_HARDWARE_FILLS TRUE
// Accelerated bitfills are also possible but only for GDISP_ROTATE_0
// and if no color translation is required (for now)
#if !GDISP_NEED_CONTROL && GDISP_PIXELFORMAT == GDISP_LLD_PIXELFORMAT
#define GDISP_HARDWARE_BITFILLS TRUE
#else
#define GDISP_HARDWARE_FILLS FALSE
#define GDISP_HARDWARE_BITFILLS FALSE
#endif
#endif /* GDISP_USE_DMA2D */
#endif /* GFX_USE_GDISP */