[U-Boot] [PATCH] Atmel LCD driver GUARDTIME fix

Mark Jackson
2009-06-16T12:46:34Z

This patch correctly sets up the guard time parameter in
the Atmel LCDC driver.

This works on the AVR32 platform, but needs to be tested
under the AT91 platform which shares the same code base.

Signed-off-by: Mark Jackson <mpfj@mimc.co.uk>
---
drivers/video/atmel_lcdfb.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 3a51cc7..14f578e 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -42,6 +42,7 @@ short console_row;
/* configurable parameters */
#define ATMEL_LCDC_CVAL_DEFAULT 0xc8
#define ATMEL_LCDC_DMA_BURST_LEN 8
+#define ATMEL_LCDC_GUARD_TIME 2

#if defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91CAP9)
#define ATMEL_LCDC_FIFO_SIZE 2048
@@ -69,7 +70,7 @@ 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 +151,7 @@ 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)