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video: Add System-Mode configuration hook into mxsfb

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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>
This commit is contained in:
Marek Vasut 2013-07-30 23:37:53 +02:00 committed by Anatolij Gustschin
parent e57baf5d19
commit 9de4b729eb
1 changed files with 16 additions and 0 deletions
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16
drivers/video/mxsfb.c
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@ -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);