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Cleanup STM32LTDC driver

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This commit is contained in:
Joel Bodenmann 2015-07-12 13:06:31 +02:00
parent 0367815bab
commit 6a75ab2588
1 changed files with 26 additions and 14 deletions
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40
drivers/gdisp/STM32LTDC/gdisp_lld_STM32LTDC.c
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@ -33,27 +33,25 @@
#endif
typedef struct ltdcLayerConfig {
// frame
// Frame
LLDCOLOR_TYPE *frame; // Frame buffer address
coord_t width, height; // Frame size in pixels
coord_t pitch; // Line pitch, in bytes
uint16_t fmt; // Pixel format in LTDC format
// window
// Window
coord_t x, y; // Start pixel position of the virtual layer
coord_t cx, cy; // Size of the virtual layer
uint32_t defcolor; // Default color, ARGB8888
uint32_t keycolor; // Color key, RGB888
uint32_t blending; // Blending factors
const uint32_t *palette; // The palette, RGB888 (can be NULL)
const uint32_t* palette; // The palette, RGB888 (can be NULL)
uint16_t palettelen; // Palette length
uint8_t alpha; // Constant alpha factor
uint8_t layerflags; // Layer configuration
} ltdcLayerConfig;
#define LTDC_UNUSED_LAYER_CONFIG { 0, 1, 1, 1, LTDC_FMT_L8, 0, 0, 1, 1, 0x000000, 0x000000, LTDC_BLEND_FIX1_FIX2, 0, 0, 0, 0 }
typedef struct ltdcConfig {
coord_t width, height; // Screen size
coord_t hsync, vsync; // Horizontal and Vertical sync pixels
@ -66,6 +64,22 @@ typedef struct ltdcConfig {
ltdcLayerConfig fglayer; // Foreground layer config
} ltdcConfig;
#define LTDC_UNUSED_LAYER_CONFIG {
0, // Frame buffer address
1, 1, // Width, Height (pixels)
1, // Line pitch (bytes)
LTDC_FMT_L8, // Pixel format
0, 0, // Start pixel position (x, y)
1, 1, // Size of virtual layer (cx, cy)
0x000000, // Default color (ARGB8888)
0x000000, // Color key (RGB888)
LTDC_BLEND_FIX1_FIX2, // Blending factors
0, // Palette (RGB888, can be NULL)
0, // Palette length
0, // Constant alpha factor
0 // Layer configuration flags
}
#if GDISP_LLD_PIXELFORMAT == GDISP_PIXELFORMAT_RGB565
#define LTDC_PIXELFORMAT LTDC_FMT_RGB565
#define LTDC_PIXELBYTES 2
@ -92,7 +106,7 @@ typedef struct ltdcConfig {
#endif
/*===========================================================================*/
/* Driver local routines . */
/* Driver local routines. */
/*===========================================================================*/
#define PIXIL_POS(g, x, y) ((y) * driverCfg.bglayer.pitch + (x) * LTDC_PIXELBYTES)
@ -144,8 +158,9 @@ static void LTDC_LayerInit(LTDC_Layer_TypeDef* pLayReg, const ltdcLayerConfig* p
pLayReg->CKCR = (pLayReg->CKCR & ~0x00FFFFFF) | (pCfg->keycolor & 0x00FFFFFF);
pLayReg->CACR = (pLayReg->CACR & ~LTDC_LxCACR_CONSTA) | ((uint32_t)pCfg->alpha & LTDC_LxCACR_CONSTA);
pLayReg->BFCR = (pLayReg->BFCR & ~(LTDC_LxBFCR_BF1 | LTDC_LxBFCR_BF2)) | ((uint32_t)pCfg->blending & (LTDC_LxBFCR_BF1 | LTDC_LxBFCR_BF2));
for (start = 0; start < pCfg->palettelen; start++)
for (start = 0; start < pCfg->palettelen; start++) {
pLayReg->CLUTWR = ((uint32_t)start << 24) | (pCfg->palette[start] & 0x00FFFFFF);
}
// Final flags
pLayReg->CR = (pLayReg->CR & ~LTDC_LEF_MASK) | ((uint32_t)pCfg->layerflags & LTDC_LEF_MASK);
@ -156,17 +171,17 @@ static void LTDC_Init(void)
// Set up the display scanning
uint32_t hacc, vacc;
/* Reset the LTDC hardware module.*/
// Reset the LTDC hardware module
RCC->APB2RSTR |= RCC_APB2RSTR_LTDCRST;
RCC->APB2RSTR = 0;
/* Enable the LTDC clock.*/
// Enable the LTDC clock
RCC->DCKCFGR1 = (RCC->DCKCFGR1 & ~RCC_DCKCFGR1_PLLSAIDIVR) | (1 << 16); /* /4 */
// Enable the module
RCC->APB2ENR |= RCC_APB2ENR_LTDCEN;
// Turn off the controller and its interrupts.
// Turn off the controller and its interrupts
LTDC->GCR = 0;
LTDC->IER = 0;
LTDC_Reload();
@ -220,12 +235,9 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay* g)
// Initialize the private structure
g->priv = 0;
g->board = 0;
//if (!(g->priv = gfxAlloc(sizeof(fbPriv))))
// gfxHalt("GDISP Framebuffer: Failed to allocate private memory");
// Init the board
init_board(g);
//((fbPriv *)g->priv)->fbi.cfg = init_board(g);
// Initialise the LTDC controller
LTDC_Init();
@ -374,7 +386,7 @@ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay* g)
#if LTDC_USE_DMA2D
static void dma2d_init(void)
{
// Enable DMA2D clock (DMA2DEN = 1)
// Enable DMA2D clock
RCC->AHB1ENR |= RCC_AHB1ENR_DMA2DEN;
// Output color format