[PATCH 1/2] fbdev: da8xx:: fix reporting of the display timing info
STALE5320d
From: Anatolij Gustschin <agust@denx.de>
Date: 2012-03-09 15:02:15
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
Timing info is not properly reported by the driver, e.g.:
$ fbset -i
mode "480x272-95"
# D: 21.429 MHz, H: 33.018 kHz, V: 95.429 Hz
geometry 480 272 480 544 16
timings 46666 64 64 32 32 41 10
According to the timing values defined for LK043T1DG01 display
it should be reported as:
mode "480x272-52"
# D: 7.834 MHz, H: 14.921 kHz, V: 51.810 Hz
geometry 480 272 480 544 16
timings 127655 2 2 2 2 41 10
Initialize additional fb_var_screeninfo fields so fix this problem.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Manjunathappa, Prakash <redacted>
---
drivers/video/da8xx-fb.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index 29577bf..27c2794 100644
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c@@ -240,6 +240,14 @@ static struct da8xx_panel known_lcd_panels[] = { }, }; +static inline unsigned long hz_to_ps(unsigned long hz_val) +{ + unsigned long long num = 1000000000000ULL; + + do_div(num, hz_val); + return (unsigned long)num; +} + /* Enable the Raster Engine of the LCD Controller */ static inline void lcd_enable_raster(void) {
@@ -1209,6 +1217,11 @@ static int __devinit fb_probe(struct platform_device *device) da8xx_fb_var.hsync_len = lcdc_info->hsw; da8xx_fb_var.vsync_len = lcdc_info->vsw; + da8xx_fb_var.right_margin = lcdc_info->hfp; + da8xx_fb_var.left_margin = lcdc_info->hbp; + da8xx_fb_var.lower_margin = lcdc_info->vfp; + da8xx_fb_var.upper_margin = lcdc_info->vbp; + da8xx_fb_var.pixclock = hz_to_ps(lcdc_info->pxl_clk); /* Initialize fbinfo */ da8xx_fb_info->flags = FBINFO_FLAG_DEFAULT;
--
1.7.7.6