diff options
| -rw-r--r-- | drivers/video/mxsfb.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c index 571b6f0..44004b1 100644 --- a/drivers/video/mxsfb.c +++ b/drivers/video/mxsfb.c @@ -28,6 +28,7 @@ #endif #define PS2KHZ(ps) (1000000000UL / (ps)) +#define WAIT_FOR_VSYNC_TIMEOUT 1000000 static GraphicDevice panel; struct mxs_dma_desc desc; @@ -166,15 +167,18 @@ static void mxs_lcd_init(GraphicDevice *panel, void lcdif_power_down() { - u32 val; struct mxs_lcdif_regs *regs = (struct mxs_lcdif_regs *)(panel.isaBase); + int timeout = WAIT_FOR_VSYNC_TIMEOUT; writel(panel.frameAdrs, ®s->hw_lcdif_cur_buf); writel(panel.frameAdrs, ®s->hw_lcdif_next_buf); - - /* Stop lcdif */ - val = LCDIF_CTRL_SFTRST | LCDIF_CTRL_CLKGATE; - writel(val, ®s->hw_lcdif_ctrl); + writel(LCDIF_CTRL1_VSYNC_EDGE_IRQ, ®s->hw_lcdif_ctrl1_clr); + while (--timeout) { + if (readl(®s->hw_lcdif_ctrl1) & LCDIF_CTRL1_VSYNC_EDGE_IRQ) + break; + udelay(1); + } + mxs_reset_block((struct mxs_register_32 *)®s->hw_lcdif_ctrl); } void *video_hw_init(void) |