omap-fb: add driver

This patch adds omap display controller support. Currently only OMAP4 DSS is supported.

---
 drivers/video/Kconfig  |    8 +
 drivers/video/Makefile |    1 +
 drivers/video/omap.c   |  524 ++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/video/omap.h   |  187 +++++++++++++++++
 4 files changed, 720 insertions(+)
 create mode 100644 drivers/video/omap.c
 create mode 100644 drivers/video/omap.h

index 6d6b08f..0639d9c 100644
@@ -45,6 +45,14 @@ config DRIVER_VIDEO_S3C24XX
 	help
 	  Add support for the S3C244x LCD controller.
 
+config DRIVER_VIDEO_OMAP
+	bool "OMAP framebuffer driver"
+	depends on ARCH_OMAP4
+	help
+	  Add support for OMAP Display Controller. Currently this
+	  driver only supports OMAP4 SoCs in DISPC parallel mode on
+	  LCD2 (MIPI DPI).
+
 if DRIVER_VIDEO_S3C24XX
 
 config DRIVER_VIDEO_S3C_VERBOSE

index 7429141..67169d1 100644
@@ -8,3 +8,4 @@ obj-$(CONFIG_DRIVER_VIDEO_IMX_IPU) += imx-ipu-fb.o
 obj-$(CONFIG_DRIVER_VIDEO_S3C24XX) += s3c24xx.o
 obj-$(CONFIG_DRIVER_VIDEO_PXA) += pxa.o
 obj-$(CONFIG_DRIVER_VIDEO_SDL) += sdl.o
+obj-$(CONFIG_DRIVER_VIDEO_OMAP) += omap.o

1.7.10.4




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This patch adds OMAP machine dependent framebuffer code so that board files can make use of driver omap-fb.

---
 arch/arm/mach-omap/Makefile               |    2 +-
 arch/arm/mach-omap/include/mach/omap-fb.h |   47 +++++++++++++++++++++++++++++
 arch/arm/mach-omap/omap_fb.c              |   34 +++++++++++++++++++++
 3 files changed, 82 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/mach-omap/include/mach/omap-fb.h
 create mode 100644 arch/arm/mach-omap/omap_fb.c

index 94e42c6..bc5daab 100644
@@ -15,7 +15,7 @@
 # GNU General Public License for more details.
 #
 #
-obj-$(CONFIG_ARCH_OMAP) += syslib.o omap_devices.o
+obj-$(CONFIG_ARCH_OMAP) += syslib.o omap_devices.o omap_fb.o
 pbl-$(CONFIG_ARCH_OMAP) += syslib.o
 obj-$(CONFIG_OMAP_CLOCK_SOURCE_S32K) += s32k_clksource.o
 obj-$(CONFIG_OMAP_CLOCK_SOURCE_DMTIMER0) += dmtimer0.o

new file mode 100644
index 0000000..ae318d8
@@ -0,0 +1,34 @@
+#include <driver.h>
+#include <common.h>
+#include <linux/ioport.h>
+#include <mach/omap-fb.h>
+
+#if defined(CONFIG_DRIVER_VIDEO_OMAP)
+static struct resource omapfb_resources[] = {
+	{
+		.name	= "omap4_dss",
+		.start	= 0x48040000,
+		.end	= 0x48040000 + 512 - 1,
+		.flags	= IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
+	}, {
+		.name	= "omap4_dispc",
+		.start	= 0x48041000,
+		.end	= 0x48041000 + 3072 - 1,
+		.flags	= IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
+	},
+};
+
+struct device_d *omap_add_display(struct omapfb_platform_data *o_pdata)
+{
+	return add_generic_device_res("omap_fb", -1,
+				      omapfb_resources,
+				      ARRAY_SIZE(omapfb_resources),
+				      o_pdata);
+}
+#else
+struct device_d *omap_add_display(struct omapfb_platform_data *o_pdata)
+{
+	return NULL;
+}
+#endif
+EXPORT_SYMBOL(omap_add_display);

1.7.10.4




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Any objections here?

These are the changes in the review-process so far:

changes since v2:
- use dev_request_mem_region_by_name()
changes since v3:
- remove register struct
- use uncached screen_base
changes since v4:
- remove useless dev_add_param()
- use wait_on_timeout() instead while-deadlock
changes since v5:
- use dev_dbg() and dev_err(), be less verbose
- fix coding-style issues
- add omap4fb_find_display_by_name()
- add additional read/write macros
changes since v6:
- split driver into two commits
- rename driver to "omap-fb"

Thanks
-- Christoph

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Oh, sorry, I missed this last version. Applied now

Thanks
Sascha

Pengutronix e.K.                           |                             |
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