[dev] Add basic framebuffer device class.

dev/class/fb_api.c

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2013 Corey Tabaka
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <err.h>
+#include <dev/class/fb.h>
+
+status_t class_fb_set_mode(struct device *dev, size_t width, size_t height, size_t bpp)
+{
+	struct fb_ops *ops = device_get_driver_ops(dev, struct fb_ops, std);
+	if (!ops)
+		return ERR_NOT_CONFIGURED;
+	
+	if (ops->set_mode)
+		return ops->set_mode(dev, width, height, bpp);
+	else
+		return ERR_NOT_SUPPORTED;
+}
+
+status_t class_fb_get_info(struct device *dev, struct fb_info *info)
+{
+	struct fb_ops *ops = device_get_driver_ops(dev, struct fb_ops, std);
+	if (!ops)
+		return ERR_NOT_CONFIGURED;
+	
+	if (ops->get_info)
+		return ops->get_info(dev, info);
+	else
+		return ERR_NOT_SUPPORTED;
+}
+
+status_t class_fb_update(struct device *dev)
+{
+	struct fb_ops *ops = device_get_driver_ops(dev, struct fb_ops, std);
+	if (!ops)
+		return ERR_NOT_CONFIGURED;
+	
+	if (ops->update)
+		return ops->update(dev);
+	else
+		return ERR_NOT_SUPPORTED;
+}
+
+status_t class_fb_update_region(struct device *dev, size_t x, size_t y, size_t width, size_t height)
+{
+	struct fb_ops *ops = device_get_driver_ops(dev, struct fb_ops, std);
+	if (!ops)
+		return ERR_NOT_CONFIGURED;
+	
+	if (ops->update_region)
+		return ops->update_region(dev, x, y, width, height);
+	else
+		return ERR_NOT_SUPPORTED;
+}
+

dev/rules.mk

@@ -9,5 +9,6 @@ MODULE_SRCS += \
 	$(LOCAL_DIR)/class/i2c_api.c \
 	$(LOCAL_DIR)/class/spi_api.c \
 	$(LOCAL_DIR)/class/uart_api.c \
+	$(LOCAL_DIR)/class/fb_api.c \
 
 include make/module.mk

include/dev/class/fb.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2013 Corey Tabaka
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __DEV_CLASS_FB_H
+#define __DEV_CLASS_FB_H
+
+#include <dev/driver.h>
+
+struct fb_info {
+	void *addr;
+	size_t line_width;
+	size_t width;
+	size_t height;
+	size_t bpp;
+};
+
+/* fb interface */
+struct fb_ops {
+	struct driver_ops std;
+
+	status_t (*set_mode)(struct device *dev, size_t width, size_t height, size_t bpp);
+	status_t (*get_info)(struct device *dev, struct fb_info *info);
+	status_t (*update)(struct device *dev);
+	status_t (*update_region)(struct device *dev, size_t x, size_t y, size_t width, size_t height);
+};
+
+status_t class_fb_set_mode(struct device *dev, size_t width, size_t height, size_t bpp);
+status_t class_fb_get_info(struct device *dev, struct fb_info *info);
+status_t class_fb_update(struct device *dev);
+status_t class_fb_update_region(struct device *dev, size_t x, size_t y, size_t width, size_t height);
+
+#endif
+
+