diff options
Diffstat (limited to 'target/device/Atmel/arch-avr32/kernel-patches-2.6.27.6/linux-2.6.27.6-202-avr32-atmel_mpopfb-add-signal-to-disable-line-caching.patch')
| -rw-r--r-- | target/device/Atmel/arch-avr32/kernel-patches-2.6.27.6/linux-2.6.27.6-202-avr32-atmel_mpopfb-add-signal-to-disable-line-caching.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/target/device/Atmel/arch-avr32/kernel-patches-2.6.27.6/linux-2.6.27.6-202-avr32-atmel_mpopfb-add-signal-to-disable-line-caching.patch b/target/device/Atmel/arch-avr32/kernel-patches-2.6.27.6/linux-2.6.27.6-202-avr32-atmel_mpopfb-add-signal-to-disable-line-caching.patch new file mode 100644 index 000000000..d09823e3b --- /dev/null +++ b/target/device/Atmel/arch-avr32/kernel-patches-2.6.27.6/linux-2.6.27.6-202-avr32-atmel_mpopfb-add-signal-to-disable-line-caching.patch @@ -0,0 +1,59 @@ +From 86fd2e3e74a191ae43122ac18f62f5163c577d4b Mon Sep 17 00:00:00 2001 +From: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> +Date: Wed, 26 Nov 2008 14:11:59 +0100 +Subject: [PATCH 3/3] atmel_mpopfb: add signal to disable line caching and set correct output + +This patch adds a signal to disable line caching, due to an errata in +silicon revision A. It also sets the output from MPOP to BGR to match +big endian framebuffer memory. + +Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> + +diff --git a/drivers/video/atmel_mpopfb.c b/drivers/video/atmel_mpopfb.c +index 3b4b668..350303b 100644 +--- a/drivers/video/atmel_mpopfb.c ++++ b/drivers/video/atmel_mpopfb.c +@@ -313,6 +313,10 @@ static int atmel_mpopfb_check_var(struct fb_var_screeninfo *var, + static void atmel_mpopfb_start(struct atmel_mpopfb_info *sinfo) + { + if (!sinfo->running) { ++ unsigned int line_cache_disable = ++ sinfo->baseimg_info.line_cache_disable ? ++ ATMEL_MPOP_CR_CACHEDIS_MASK : 0; ++ + dev_dbg(sinfo->info->device, " * Starting MPOP.\n"); + + /* Enable all error interrupts. */ +@@ -323,9 +327,9 @@ static void atmel_mpopfb_start(struct atmel_mpopfb_info *sinfo) + * reading from the slave interface it will start + * generating a frame. + */ +- mpop_writel(sinfo, ATMEL_MPOP_CR, +- ATMEL_MPOP_CR_EN_MASK +- /*| ATMEL_MPOP_CR_OUT_BGR_MASK */ ); ++ mpop_writel(sinfo, ATMEL_MPOP_CR, ATMEL_MPOP_CR_EN_MASK ++ | line_cache_disable ++ | ATMEL_MPOP_CR_OUT_BGR_MASK); + + sinfo->running = 1; + } +diff --git a/include/linux/atmel_mpopfb.h b/include/linux/atmel_mpopfb.h +index cd12e16..d0f2505 100644 +--- a/include/linux/atmel_mpopfb.h ++++ b/include/linux/atmel_mpopfb.h +@@ -42,9 +42,11 @@ struct atmel_mpopfb_baseimg_info { + unsigned xsize; + unsigned ysize; + +- /* Signal that we should flip the video. */ ++ /* Signal for flipping the video. */ + int flip; + ++ /* Signal for disabling the line cache. */ ++ int line_cache_disable; + }; + + enum atmel_mpopfb_overlay_type { +-- +1.5.6.3 + |