aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorGravatar Peter Seiderer <ps.report@gmx.net>2015-01-03 21:01:47 +0100
committerGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2015-01-10 15:25:31 +0100
commit9b2bbe3422d1e96eaf1e7f09743c325b48023ac2 (patch)
treed89935f4c784df651ecb83f43e488c390a311015
parentce36c35c420dc9bff7d7f62490e4eb1e47d1a9dd (diff)
downloadbuildroot-9b2bbe3422d1e96eaf1e7f09743c325b48023ac2.tar.gz
buildroot-9b2bbe3422d1e96eaf1e7f09743c325b48023ac2.tar.bz2
linux: add fbtft kernel extension
Tested with RaspberryPi B+ and PiTFT Mini Kit - 320x240 2.8" TFT (see [1] and [2]) and the following target configuration changes: - cmdline.txt: add 'fbcon=map:10 fbcon=font:VGA8x8' - add /etc/modules-load.d/fbtft.conf with 'fbtft_device' - add /etc/modprobe.d/00-fbtft.conf with 'options fbtft_device name=adafruit28 rotate=90 gpios=dc:25' [1] http://h65951.serverkompetenz.net/PeterSeiderer/upload/PiTFT_2_8_ct/Image9893.jpg [2] http://h65951.serverkompetenz.net/PeterSeiderer/upload/PiTFT_2_8_ct/Image9897.jpg [Thomas: - Rename prompt of the Linux extension to "FB TFT drivers" - Remove the full name of the kernel config options in the help text. Giving their CONFIG_<foo> name is enough. - Remove the mention of CONFIG_SPI_BCM2708, since this makes the description RaspberryPi specific, while these drivers can work with any SPI controller. - Refactor the code in linux-ext-fbtft.mk to avoid duplication between the < 3.15 and >= 3.15 cases. - Make the fbtft package a promptless package, since there is no point in selecting only this package, without the kernel extension. - Change the license to GPLv2, since it's kernel code.] Signed-off-by: Peter Seiderer <ps.report@gmx.net> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-rw-r--r--linux/Config.ext.in18
-rw-r--r--linux/linux-ext-fbtft.mk28
-rw-r--r--package/Config.in1
-rw-r--r--package/fbtft/Config.in13
-rw-r--r--package/fbtft/fbtft.mk11
5 files changed, 71 insertions, 0 deletions
diff --git a/linux/Config.ext.in b/linux/Config.ext.in
index 40c468424a..8f156874f0 100644
--- a/linux/Config.ext.in
+++ b/linux/Config.ext.in
@@ -42,4 +42,22 @@ config BR2_LINUX_KERNEL_EXT_RTAI_PATCH
help
Optionally, explicitly specify the RTAI patch to use.
+# fbtft
+config BR2_LINUX_KERNEL_EXT_FBTFT
+ bool "FB TFT drivers"
+ select BR2_PACKAGE_FBTFT
+ help
+ Linux Framebuffer drivers for small TFT LCD display modules,
+ e.g. Adafruit PiTFT displays for Raspberry Pi.
+
+ To enable fbtft, e.g. for Adafruit 2.8 PiTFT, enable the
+ following kernel configurations:
+ - CONFIG_SPI
+ - CONFIG_GPIOLIB
+ - CONFIG_FB
+ - CONFIG_FB_TFT
+ - CONFIG_FB_TFT_ILI9341
+
+ https://github.com/notro/fbtft
+
endmenu
diff --git a/linux/linux-ext-fbtft.mk b/linux/linux-ext-fbtft.mk
new file mode 100644
index 0000000000..36f4fd22dd
--- /dev/null
+++ b/linux/linux-ext-fbtft.mk
@@ -0,0 +1,28 @@
+################################################################################
+# Linux fbtft extensions
+#
+# Patch the linux kernel with fbtft extension
+################################################################################
+
+ifeq ($(BR2_LINUX_KERNEL_EXT_FBTFT),y)
+# Add dependency to fbtft package (download helper for the fbtft source)
+LINUX_DEPENDENCIES += fbtft
+
+# for linux >= 3.15 install to drivers/video/fbdev/fbtft
+# for linux < 3.15 install to drivers/video/fbtft
+define FBTFT_PREPARE_KERNEL
+ if [ -e $(LINUX_DIR)/drivers/video/fbdev ]; then \
+ dest=$(LINUX_DIR)/drivers/video/fbdev ; \
+ else \
+ dest=$(LINUX_DIR)/drivers/video/ ; \
+ fi ; \
+ mkdir -p $${dest}/fbtft; \
+ cp -dpfr $(FBTFT_DIR)/* $${dest}/fbtft/ ; \
+ echo 'source "drivers/video/fbdev/fbtft/Kconfig"' \
+ >> $${dest}/Kconfig ; \
+ echo 'obj-y += fbtft/' >> $${dest}/Makefile
+endef
+
+LINUX_PRE_PATCH_HOOKS += FBTFT_PREPARE_KERNEL
+
+endif #BR2_LINUX_KERNEL_EXT_FBTFT
diff --git a/package/Config.in b/package/Config.in
index 08fa31d267..878aa7242e 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -313,6 +313,7 @@ endif
source "package/evemu/Config.in"
source "package/evtest/Config.in"
source "package/fan-ctrl/Config.in"
+ source "package/fbtft/Config.in"
source "package/fconfig/Config.in"
source "package/fis/Config.in"
source "package/flashrom/Config.in"
diff --git a/package/fbtft/Config.in b/package/fbtft/Config.in
new file mode 100644
index 0000000000..0a4de19091
--- /dev/null
+++ b/package/fbtft/Config.in
@@ -0,0 +1,13 @@
+# Prompt-less option, because this package is not doing anything
+# except downloading the FB TFT sources. The real work is done by a
+# Linux extension.
+config BR2_PACKAGE_FBTFT
+ bool
+ depends on BR2_LINUX_KERNEL
+ help
+ Linux Framebuffer drivers for small TFT LCD display modules,
+ e.g. Adafruit PiTFT displays for Raspberry Pi.
+
+ This is only the download helper for the kernel patch.
+
+ https://github.com/notro/fbtft
diff --git a/package/fbtft/fbtft.mk b/package/fbtft/fbtft.mk
new file mode 100644
index 0000000000..913627dfc9
--- /dev/null
+++ b/package/fbtft/fbtft.mk
@@ -0,0 +1,11 @@
+################################################################################
+#
+# fbtft
+#
+################################################################################
+
+FBTFT_VERSION = 274035404701245e7491c0c6471c5b72ade4d491
+FBTFT_SITE = $(call github,notro,fbtft,$(FBTFT_VERSION))
+FBTFT_LICENSE = GPLv2
+
+$(eval $(generic-package))