From 9d73b518fc3c61640123f8499aab7f8373e41dbd Mon Sep 17 00:00:00 2001
From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Date: Wed, 12 Sep 2012 15:38:42 +0200
Subject: sandbox: add sdl video support

This will allow speed up the dev on framebuffer.

By default the resolution is VGA but this can be changed via cmdline.

We use a pthread to Flip the screen every 100ms as we can not detect when
barebox update it as barebox simpliy write in a buffer.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/Kconfig  |   4 ++
 drivers/video/Makefile |   1 +
 drivers/video/sdl.c    | 101 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 106 insertions(+)
 create mode 100644 drivers/video/sdl.c

(limited to 'drivers/video')

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 519cdbf25a..4aa92c5993 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -44,6 +44,10 @@ config DRIVER_VIDEO_S3C_VERBOSE
 
 endif
 
+config DRIVER_VIDEO_SDL
+	bool "SDL framebuffer driver"
+	depends on SANDBOX
+
 config DRIVER_VIDEO_PXA
 	bool "PXA27x framebuffer driver"
 	depends on ARCH_PXA27X
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 913c78d92b..77f6682576 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_DRIVER_VIDEO_IMX) += imx.o
 obj-$(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
diff --git a/drivers/video/sdl.c b/drivers/video/sdl.c
new file mode 100644
index 0000000000..ed083d76f5
--- /dev/null
+++ b/drivers/video/sdl.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * GPL v2
+ */
+
+#include <common.h>
+#include <driver.h>
+#include <init.h>
+#include <malloc.h>
+#include <mach/linux.h>
+#include <fb.h>
+#include <errno.h>
+#include <graphic_utils.h>
+
+static void sdlfb_enable(struct fb_info *info)
+{
+	sdl_start_timer();
+}
+
+static void sdlfb_disable(struct fb_info *info)
+{
+	sdl_stop_timer();
+}
+
+static struct fb_ops sdlfb_ops = {
+	.fb_enable	= sdlfb_enable,
+	.fb_disable	= sdlfb_disable,
+};
+
+static int sdlfb_probe(struct device_d *dev)
+{
+	struct fb_info *fb;
+	int ret = -EIO;
+
+	if (!dev->platform_data)
+		return -EIO;
+
+	fb = xzalloc(sizeof(*fb));
+	fb->mode_list = fb->mode = dev->platform_data;
+	fb->num_modes = 1;
+	fb->bits_per_pixel = 4 << 3;
+	fb->xres = fb->mode->xres;
+	fb->yres = fb->mode->yres;
+
+	fb->priv = fb;
+	fb->fbops = &sdlfb_ops,
+
+	fb->dev.parent = dev;
+	fb->screen_base = xzalloc(fb->xres * fb->yres *
+				  fb->bits_per_pixel >> 3);
+
+	if (sdl_open(fb->xres, fb->yres, fb->bits_per_pixel,
+		     fb->screen_base))
+		goto err;
+
+	sdl_get_bitfield_rgba(&fb->red, &fb->green, &fb->blue, &fb->transp);
+
+	dev_dbg(dev, "red: length = %d, offset = %d\n",
+		fb->red.length, fb->red.offset);
+	dev_dbg(dev, "green: length = %d, offset = %d\n",
+		fb->green.length, fb->green.offset);
+	dev_dbg(dev, "blue: length = %d, offset = %d\n",
+		fb->blue.length, fb->blue.offset);
+	dev_dbg(dev, "transp: length = %d, offset = %d\n",
+		fb->transp.length, fb->transp.offset);
+
+	/* add runtime hardware info */
+	dev->priv = fb;
+
+	ret = register_framebuffer(fb);
+	if (!ret)
+		return 0;
+
+err:
+	kfree(fb->screen_base);
+	kfree(fb);
+	sdl_close();
+	return ret;
+}
+
+static void sdlfb_remove(struct device_d *dev)
+{
+	struct fb_info *fb = dev->priv;
+
+	kfree(fb->screen_base);
+	kfree(fb);
+	sdl_close();
+}
+
+static struct driver_d sdlfb_driver = {
+	.name	= "sdlfb",
+	.probe	= sdlfb_probe,
+	.remove	= sdlfb_remove,
+};
+
+static int sdlfb_init(void)
+{
+	return register_driver(&sdlfb_driver);
+}
+device_initcall(sdlfb_init);
-- 
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