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path: root/drivers/video/da8xx-fb.c
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Diffstat (limited to 'drivers/video/da8xx-fb.c')
-rw-r--r--drivers/video/da8xx-fb.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index 55f91d9ab00b..29577bf1f559 100644
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -116,6 +116,7 @@
116/* Clock registers available only on Version 2 */ 116/* Clock registers available only on Version 2 */
117#define LCD_CLK_ENABLE_REG 0x6c 117#define LCD_CLK_ENABLE_REG 0x6c
118#define LCD_CLK_RESET_REG 0x70 118#define LCD_CLK_RESET_REG 0x70
119#define LCD_CLK_MAIN_RESET BIT(3)
119 120
120#define LCD_NUM_BUFFERS 2 121#define LCD_NUM_BUFFERS 2
121 122
@@ -244,6 +245,10 @@ static inline void lcd_enable_raster(void)
244{ 245{
245 u32 reg; 246 u32 reg;
246 247
248 /* Bring LCDC out of reset */
249 if (lcd_revision == LCD_VERSION_2)
250 lcdc_write(0, LCD_CLK_RESET_REG);
251
247 reg = lcdc_read(LCD_RASTER_CTRL_REG); 252 reg = lcdc_read(LCD_RASTER_CTRL_REG);
248 if (!(reg & LCD_RASTER_ENABLE)) 253 if (!(reg & LCD_RASTER_ENABLE))
249 lcdc_write(reg | LCD_RASTER_ENABLE, LCD_RASTER_CTRL_REG); 254 lcdc_write(reg | LCD_RASTER_ENABLE, LCD_RASTER_CTRL_REG);
@@ -257,6 +262,10 @@ static inline void lcd_disable_raster(void)
257 reg = lcdc_read(LCD_RASTER_CTRL_REG); 262 reg = lcdc_read(LCD_RASTER_CTRL_REG);
258 if (reg & LCD_RASTER_ENABLE) 263 if (reg & LCD_RASTER_ENABLE)
259 lcdc_write(reg & ~LCD_RASTER_ENABLE, LCD_RASTER_CTRL_REG); 264 lcdc_write(reg & ~LCD_RASTER_ENABLE, LCD_RASTER_CTRL_REG);
265
266 if (lcd_revision == LCD_VERSION_2)
267 /* Write 1 to reset LCDC */
268 lcdc_write(LCD_CLK_MAIN_RESET, LCD_CLK_RESET_REG);
260} 269}
261 270
262static void lcd_blit(int load_mode, struct da8xx_fb_par *par) 271static void lcd_blit(int load_mode, struct da8xx_fb_par *par)
@@ -584,8 +593,12 @@ static void lcd_reset(struct da8xx_fb_par *par)
584 lcdc_write(0, LCD_DMA_CTRL_REG); 593 lcdc_write(0, LCD_DMA_CTRL_REG);
585 lcdc_write(0, LCD_RASTER_CTRL_REG); 594 lcdc_write(0, LCD_RASTER_CTRL_REG);
586 595
587 if (lcd_revision == LCD_VERSION_2) 596 if (lcd_revision == LCD_VERSION_2) {
588 lcdc_write(0, LCD_INT_ENABLE_SET_REG); 597 lcdc_write(0, LCD_INT_ENABLE_SET_REG);
598 /* Write 1 to reset */
599 lcdc_write(LCD_CLK_MAIN_RESET, LCD_CLK_RESET_REG);
600 lcdc_write(0, LCD_CLK_RESET_REG);
601 }
589} 602}
590 603
591static void lcd_calc_clk_divider(struct da8xx_fb_par *par) 604static void lcd_calc_clk_divider(struct da8xx_fb_par *par)