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authorMarek Vasut <marex@denx.de>2013-07-30 23:37:53 +0200
committerAnatolij Gustschin <agust@denx.de>2013-08-09 21:48:49 +0200
commit9de4b729eb42dab9ed35ab7079d7d2a9241b0d07 (patch)
tree27214eb2b87e69da46b89484845110ee6a689a86 /drivers/video
parente57baf5d199e9a330032de29025af955717ebdf9 (diff)
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video: Add System-Mode configuration hook into mxsfb
Add hook that allow configuring SmartLCD attached the MXS LCDIF controller operating in System-Mode. This hook can be overriden by a platform-specific SmartLCD programming routine, which writes the SmartLCD specific values into it's registers. Also, this patch makes sure the SYNC signals are off for the SmartLCD case. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Anatolij Gustschin <agust@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Otavio Salvador <otavio@ossystems.com.br> Cc: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/mxsfb.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c
index 374c823..c55cb44 100644
--- a/drivers/video/mxsfb.c
+++ b/drivers/video/mxsfb.c
@@ -21,6 +21,17 @@
static GraphicDevice panel;
+/**
+ * mxsfb_system_setup() - Fine-tune LCDIF configuration
+ *
+ * This function is used to adjust the LCDIF configuration. This is usually
+ * needed when driving the controller in System-Mode to operate an 8080 or
+ * 6800 connected SmartLCD.
+ */
+__weak void mxsfb_system_setup(void)
+{
+}
+
/*
* DENX M28EVK:
* setenv videomode
@@ -75,6 +86,9 @@ static void mxs_lcd_init(GraphicDevice *panel,
writel(valid_data << LCDIF_CTRL1_BYTE_PACKING_FORMAT_OFFSET,
&regs->hw_lcdif_ctrl1);
+
+ mxsfb_system_setup();
+
writel((mode->yres << LCDIF_TRANSFER_COUNT_V_COUNT_OFFSET) | mode->xres,
&regs->hw_lcdif_transfer_count);
@@ -102,8 +116,10 @@ static void mxs_lcd_init(GraphicDevice *panel,
/* Flush FIFO first */
writel(LCDIF_CTRL1_FIFO_CLEAR, &regs->hw_lcdif_ctrl1_set);
+#ifndef CONFIG_VIDEO_MXS_MODE_SYSTEM
/* Sync signals ON */
setbits_le32(&regs->hw_lcdif_vdctrl4, LCDIF_VDCTRL4_SYNC_SIGNALS_ON);
+#endif
/* FIFO cleared */
writel(LCDIF_CTRL1_FIFO_CLEAR, &regs->hw_lcdif_ctrl1_clr);