Add OV2640 camera support to test the SAMA5 ISI peripheral

drivers/video/Kconfig

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+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
+
+config VIDEO_OV2640
+	bool "OV2640 camera chip"
+	default n
+	select I2C
+
+if VIDEO_OV2640
+
+config OV2640_MULTIPLE
+	bool "Multiple OV2640 devices"
+	default n
+	---help---
+		Build in support for multiple on-board OV2640 devices
+
+config OV2640_I2CADDR
+	hex "I2C address (7-bit)"
+	default 0x21
+	---help---
+		OV2640 I2C address in 7-bit format
+
+config OV2640_FREQUENCY
+	int "I2C frequency"
+	default 400000
+	---help---
+		OV2640 I2C frequency
+choice
+	prompt "Color format"
+	default OV2640_RGB565_COLORFMT
+
+config OV2640_RGB565_COLORFMT
+	bool "RGB565"
+
+config OV2640_YUV422_COLORFMT
+	bool "YUV422"
+
+endchoice
+
+config OV2640_JPEG
+	bool "JPEG output format"
+	default n
+	---help---
+	Select JPEG output format
+
+choice
+	prompt "JPEG resolution"
+	default OV2640_JPEG_SVGA_RESOLUTION
+	depends on OV2640_JPEG
+
+config OV2640_JPEG_QCIF_RESOLUTION
+	bool "QCIF (176x144)"
+
+config OV2640_JPEG_QVGA_RESOLUTION
+	bool "QVGA (320x240)"
+
+config OV2640_JPEG_CIF_RESOLUTION
+	bool "CIF (352x288)"
+
+config OV2640_JPEG_VGA_RESOLUTION
+	bool "VGA (640x480)"
+
+config OV2640_JPEG_SVGA_RESOLUTION
+	bool "SVGA (800x600)"
+
+config OV2640_JPEG_XVGA_RESOLUTION
+	bool "XVGA (1024x768)"
+
+config OV2640_JPEG_SXVGA_RESOLUTION
+	bool "SXVGA (1280x1024)"
+
+config OV2640_JPEG_UXGA_RESOLUTION
+	bool "UXVGA (1600x1200)"
+
+endchoice
+
+choice
+	prompt "Output resolution"
+	default OV2640_SVGA_RESOLUTION
+	depends on !OV2640_JPEG
+
+config OV2640_QCIF_RESOLUTION
+	bool "QCIF (176x144)"
+
+config OV2640_QVGA_RESOLUTION
+	bool "QVGA (320x240)"
+
+config OV2640_CIF_RESOLUTION
+	bool "CIF (352x288)"
+
+config OV2640_VGA_RESOLUTION
+	bool "VGA (640x480)"
+
+config OV2640_SVGA_RESOLUTION
+	bool "SVGA (800x600)"
+
+config OV2640_XVGA_RESOLUTION
+	bool "XVGA (1024x768)"
+
+config OV2640_SXGA_RESOLUTION
+	bool "SXVGA (1280x1024)"
+
+config OV2640_UXGA_RESOLUTION
+	bool "UXVGA (1600x1200)"
+
+endchoice
+
+config OV2640_REGDEBUG
+	bool "Register level debug output"
+	default n
+	depends on DEBUG
+	---help---
+		Enable details, register level debug output.
+
+endif

drivers/video/Make.defs

@@ -0,0 +1,56 @@
+############################################################################
+# drivers/ov2640/Make.defs
+#
+#   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+# Include video drivers
+
+ifeq ($(CONFIG_VIDEO_DEVICES),y)
+
+# These video drivers depend on I2C support
+
+ifeq ($(CONFIG_I2C),y)
+
+ifeq ($(CONFIG_VIDEO_OV2640),y)
+  CSRCS += ov2640.c
+endif
+
+endif
+
+# Include video driver build support
+
+DEPPATH += --dep-path video
+VPATH += :video
+CFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(TOPDIR)$(DELIM)drivers$(DELIM)video}
+
+endif