diff options
Diffstat (limited to 'recipes/linux/linux-omap-2.6.28/omap3evm/omap3evm-lcd-redtint.diff')
| -rw-r--r-- | recipes/linux/linux-omap-2.6.28/omap3evm/omap3evm-lcd-redtint.diff | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-2.6.28/omap3evm/omap3evm-lcd-redtint.diff b/recipes/linux/linux-omap-2.6.28/omap3evm/omap3evm-lcd-redtint.diff new file mode 100644 index 0000000000..54ea3c9f68 --- /dev/null +++ b/recipes/linux/linux-omap-2.6.28/omap3evm/omap3evm-lcd-redtint.diff @@ -0,0 +1,66 @@ +Message-ID: <c656a4d20809270046u341aec27k6d896d4b42e799d4@mail.gmail.com> +Date: Sat, 27 Sep 2008 03:46:18 -0400 +From: "arun c" <arun.edarath@gmail.com> +To: "Daniel Schaeffer" <daniel.schaeffer@timesys.com> +Subject: Re: OMAP3EVM LCD red tint + +Hi Daniel Schaeffer + +On Fri, Sep 26, 2008 at 4:20 PM, Daniel Schaeffer +<daniel.schaeffer@timesys.com> wrote: +> Has anyone looked into why the LCD display on the OMAP3EVM is always tinted +> red? I created a couple of color test images that I cat'ed to /dev/fb and it +> looks like the blue color channel is completely ignored. I was testing on +> v2.6.26-omap2 but is doesn't look like there have been any changes to the fb +> driver since then so I'm assuming the issue is also present in the head of +> the git tree. +> +> Regards, +> +> Daniel Schaeffer +> + +Try the patch below(Remember that you may have to manually edit because +this patch is against current HEAD) + + +diff --git a/drivers/video/omap/lcd_omap3evm.c +b/drivers/video/omap/lcd_omap3evm.c +index a564ca5..821bafe 100644 +--- a/drivers/video/omap/lcd_omap3evm.c ++++ b/drivers/video/omap/lcd_omap3evm.c +@@ -44,6 +44,8 @@ + #define ENABLE_VDAC_DEV_GRP 0x20 + #define ENABLE_VPLL2_DEDICATED 0x05 + #define ENABLE_VPLL2_DEV_GRP 0xE0 ++#define TWL4030_VPLL2_DEV_GRP 0x33 ++#define TWL4030_VPLL2_DEDICATED 0x36 + + #define TWL_LED_LEDEN 0x00 + #define TWL_PWMA_PWMAON 0x00 +@@ -86,12 +88,24 @@ static void omap3evm_panel_cleanup(struct lcd_panel *panel) + + static int omap3evm_panel_enable(struct lcd_panel *panel) + { ++ if (omap_rev > OMAP3430_REV_ES1_0) { ++ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, ++ ENABLE_VPLL2_DEDICATED, TWL4030_VPLL2_DEDICATED); ++ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, ++ ENABLE_VPLL2_DEV_GRP, TWL4030_VPLL2_DEV_GRP); ++ } + omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 0); + return 0; + } + + static void omap3evm_panel_disable(struct lcd_panel *panel) + { ++ if (omap_rev > OMAP3430_REV_ES1_0) { ++ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x0, ++ TWL4030_VPLL2_DEDICATED); ++ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x0, ++ TWL4030_VPLL2_DEV_GRP); ++ } + omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 1); + } + + |