Atmel LCD driver GUARDTIME fix

This patch allows the guard time parameter to be set in
the Atmel LCDC driver.

By default, the previous value of 1 is used, unless the
setting is defined elsewhere.

Signed-off-by: Mark Jackson <mpfj@mimc.co.uk>

diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 3a51cc7c560becba966855d9692d63ed8a82433e..db867638f6310e2491fa017426793edc1d715cf0 100644 (file)
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -42,6 +42,9 @@ short console_row;
 /* configurable parameters */
 #define ATMEL_LCDC_CVAL_DEFAULT                0xc8
 #define ATMEL_LCDC_DMA_BURST_LEN       8
+#ifndef ATMEL_LCDC_GUARD_TIME
+#define ATMEL_LCDC_GUARD_TIME          1
+#endif
 
 #if defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91CAP9)
 #define ATMEL_LCDC_FIFO_SIZE           2048
@@ -69,7 +72,7 @@ void lcd_ctrl_init(void *lcdbase)
 
        /* Turn off the LCD controller and the DMA controller */
        lcdc_writel(panel_info.mmio, ATMEL_LCDC_PWRCON,
-                   1 << ATMEL_LCDC_GUARDT_OFFSET);
+                   ATMEL_LCDC_GUARD_TIME << ATMEL_LCDC_GUARDT_OFFSET);
 
        /* Wait for the LCDC core to become idle */
        while (lcdc_readl(panel_info.mmio, ATMEL_LCDC_PWRCON) & ATMEL_LCDC_BUSY)
@@ -150,7 +153,7 @@ void lcd_ctrl_init(void *lcdbase)
 
        lcdc_writel(panel_info.mmio, ATMEL_LCDC_DMACON, ATMEL_LCDC_DMAEN);
        lcdc_writel(panel_info.mmio, ATMEL_LCDC_PWRCON,
-                   (1 << ATMEL_LCDC_GUARDT_OFFSET) | ATMEL_LCDC_PWR);
+                   (ATMEL_LCDC_GUARD_TIME << ATMEL_LCDC_GUARDT_OFFSET) | ATMEL_LCDC_PWR);
 }
 
 ulong calc_fbsize(void)