From 5d910426a6e80194a50e33351c91abcad266c809 Mon Sep 17 00:00:00 2001 From: Alexander Stein Date: Wed, 5 Oct 2011 09:59:57 +0200 Subject: [PATCH] atmel_lcdfb: Adjust HFP calculation so it matches the manual. In the AT91SAM9263 Manual the HFP part in LCDTIM2 is described as follows: * HFP: Horizontal Front Porch Number of idle LCDDOTCK cycles at the end of the line. Idle period is (HFP+2) LCDDOTCK cycles. It is only a minor issue. I also changed all boards using atmel_lcdfb I found to respect the new calculation. Signed-off-by: Alexander Stein Signed-off-by: Florian Tobias Schandinat --- arch/arm/mach-at91/board-cap9adk.c | 2 +- arch/arm/mach-at91/board-neocore926.c | 2 +- arch/arm/mach-at91/board-sam9261ek.c | 4 ++-- arch/arm/mach-at91/board-sam9263ek.c | 2 +- arch/arm/mach-at91/board-sam9m10g45ek.c | 2 +- arch/arm/mach-at91/board-sam9rlek.c | 2 +- drivers/video/atmel_lcdfb.c | 4 ++-- 7 files changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/arm/mach-at91/board-cap9adk.c b/arch/arm/mach-at91/board-cap9adk.c index 679b0b743e92..ae962bf7ca0d 100644 --- a/arch/arm/mach-at91/board-cap9adk.c +++ b/arch/arm/mach-at91/board-cap9adk.c @@ -304,7 +304,7 @@ static struct fb_videomode at91_tft_vga_modes[] = { .xres = 240, .yres = 320, .pixclock = KHZ2PICOS(4965), - .left_margin = 1, .right_margin = 33, + .left_margin = 1, .right_margin = 34, .upper_margin = 1, .lower_margin = 0, .hsync_len = 5, .vsync_len = 1, diff --git a/arch/arm/mach-at91/board-neocore926.c b/arch/arm/mach-at91/board-neocore926.c index 9bc6ab32e0ac..583878ed9a6d 100644 --- a/arch/arm/mach-at91/board-neocore926.c +++ b/arch/arm/mach-at91/board-neocore926.c @@ -235,7 +235,7 @@ static struct fb_videomode at91_tft_vga_modes[] = { .xres = 240, .yres = 320, .pixclock = KHZ2PICOS(5000), - .left_margin = 1, .right_margin = 33, + .left_margin = 1, .right_margin = 34, .upper_margin = 1, .lower_margin = 0, .hsync_len = 5, .vsync_len = 1, diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c index 5096a0ec50c1..8dda83bd2791 100644 --- a/arch/arm/mach-at91/board-sam9261ek.c +++ b/arch/arm/mach-at91/board-sam9261ek.c @@ -370,7 +370,7 @@ static struct fb_videomode at91_stn_modes[] = { .xres = 320, .yres = 240, .pixclock = KHZ2PICOS(1440), - .left_margin = 1, .right_margin = 1, + .left_margin = 1, .right_margin = 2, .upper_margin = 0, .lower_margin = 0, .hsync_len = 1, .vsync_len = 1, @@ -431,7 +431,7 @@ static struct fb_videomode at91_tft_vga_modes[] = { .xres = 240, .yres = 320, .pixclock = KHZ2PICOS(4965), - .left_margin = 1, .right_margin = 33, + .left_margin = 1, .right_margin = 34, .upper_margin = 1, .lower_margin = 0, .hsync_len = 5, .vsync_len = 1, diff --git a/arch/arm/mach-at91/board-sam9263ek.c b/arch/arm/mach-at91/board-sam9263ek.c index ea8f185d3b9d..e26007004402 100644 --- a/arch/arm/mach-at91/board-sam9263ek.c +++ b/arch/arm/mach-at91/board-sam9263ek.c @@ -258,7 +258,7 @@ static struct fb_videomode at91_tft_vga_modes[] = { .xres = 240, .yres = 320, .pixclock = KHZ2PICOS(4965), - .left_margin = 1, .right_margin = 33, + .left_margin = 1, .right_margin = 34, .upper_margin = 1, .lower_margin = 0, .hsync_len = 5, .vsync_len = 1, diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c index ad234ccbf57e..5e9a5ca54d4c 100644 --- a/arch/arm/mach-at91/board-sam9m10g45ek.c +++ b/arch/arm/mach-at91/board-sam9m10g45ek.c @@ -197,7 +197,7 @@ static struct fb_videomode at91_tft_vga_modes[] = { .xres = 480, .yres = 272, .pixclock = KHZ2PICOS(9000), - .left_margin = 1, .right_margin = 1, + .left_margin = 1, .right_margin = 2, .upper_margin = 40, .lower_margin = 1, .hsync_len = 45, .vsync_len = 1, diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c index 4f14b54b93a8..ad9e5c93d876 100644 --- a/arch/arm/mach-at91/board-sam9rlek.c +++ b/arch/arm/mach-at91/board-sam9rlek.c @@ -154,7 +154,7 @@ static struct fb_videomode at91_tft_vga_modes[] = { .xres = 240, .yres = 320, .pixclock = KHZ2PICOS(4965), - .left_margin = 1, .right_margin = 33, + .left_margin = 1, .right_margin = 34, .upper_margin = 1, .lower_margin = 0, .hsync_len = 5, .vsync_len = 1, diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c index 244d55b7c0ae..7e66263b18c1 100644 --- a/drivers/video/atmel_lcdfb.c +++ b/drivers/video/atmel_lcdfb.c @@ -396,7 +396,7 @@ static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var, var->lower_margin = min_t(u32, var->lower_margin, ATMEL_LCDC_VFP); var->right_margin = min_t(u32, var->right_margin, - (ATMEL_LCDC_HFP >> ATMEL_LCDC_HFP_OFFSET) + 1); + (ATMEL_LCDC_HFP >> ATMEL_LCDC_HFP_OFFSET) + 2); var->hsync_len = min_t(u32, var->hsync_len, (ATMEL_LCDC_HPW >> ATMEL_LCDC_HPW_OFFSET) + 1); var->left_margin = min_t(u32, var->left_margin, @@ -581,7 +581,7 @@ static int atmel_lcdfb_set_par(struct fb_info *info) lcdc_writel(sinfo, ATMEL_LCDC_TIM1, value); /* Horizontal timing */ - value = (info->var.right_margin - 1) << ATMEL_LCDC_HFP_OFFSET; + value = (info->var.right_margin - 2) << ATMEL_LCDC_HFP_OFFSET; value |= (info->var.hsync_len - 1) << ATMEL_LCDC_HPW_OFFSET; value |= (info->var.left_margin - 1); dev_dbg(info->device, " * LCDTIM2 = %08lx\n", value); -- 2.11.0