Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / video / fbdev / q40fb.c

diff --git a/kernel/drivers/video/fbdev/q40fb.c b/kernel/drivers/video/fbdev/q40fb.c
new file mode 100644 (file)
index 0000000..7487f76
--- /dev/null
+++ b/kernel/drivers/video/fbdev/q40fb.c
@@ -0,0 +1,155 @@
+/*
+ * linux/drivers/video/q40fb.c -- Q40 frame buffer device
+ *
+ * Copyright (C) 2001
+ *
+ *      Richard Zidlicky <rz@linux-m68k.org>
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License. See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
+#include <asm/uaccess.h>
+#include <asm/setup.h>
+#include <asm/q40_master.h>
+#include <linux/fb.h>
+#include <linux/module.h>
+#include <asm/pgtable.h>
+
+#define Q40_PHYS_SCREEN_ADDR 0xFE800000
+
+static struct fb_fix_screeninfo q40fb_fix = {
+       .id             = "Q40",
+       .smem_len       = 1024*1024,
+       .type           = FB_TYPE_PACKED_PIXELS,
+       .visual         = FB_VISUAL_TRUECOLOR,
+       .line_length    = 1024*2,
+       .accel          = FB_ACCEL_NONE,
+};
+
+static struct fb_var_screeninfo q40fb_var = {
+       .xres           = 1024,
+       .yres           = 512,
+       .xres_virtual   = 1024,
+       .yres_virtual   = 512,
+       .bits_per_pixel = 16,
+       .red            = {6, 5, 0},
+       .green          = {11, 5, 0},
+       .blue           = {0, 6, 0},
+       .activate       = FB_ACTIVATE_NOW,
+       .height         = 230,
+       .width          = 300,
+       .vmode          = FB_VMODE_NONINTERLACED,
+};
+
+static int q40fb_setcolreg(unsigned regno, unsigned red, unsigned green,
+                          unsigned blue, unsigned transp,
+                          struct fb_info *info)
+{
+    /*
+     *  Set a single color register. The values supplied have a 16 bit
+     *  magnitude.
+     *  Return != 0 for invalid regno.
+     */
+
+    if (regno > 255)
+           return 1;
+    red>>=11;
+    green>>=11;
+    blue>>=10;
+
+    if (regno < 16) {
+       ((u32 *)info->pseudo_palette)[regno] = ((red & 31) <<6) |
+                                              ((green & 31) << 11) |
+                                              (blue & 63);
+    }
+    return 0;
+}
+
+static struct fb_ops q40fb_ops = {
+       .owner          = THIS_MODULE,
+       .fb_setcolreg   = q40fb_setcolreg,
+       .fb_fillrect    = cfb_fillrect,
+       .fb_copyarea    = cfb_copyarea,
+       .fb_imageblit   = cfb_imageblit,
+};
+
+static int q40fb_probe(struct platform_device *dev)
+{
+       struct fb_info *info;
+
+       if (!MACH_IS_Q40)
+               return -ENXIO;
+
+       /* mapped in q40/config.c */
+       q40fb_fix.smem_start = Q40_PHYS_SCREEN_ADDR;
+
+       info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
+       if (!info)
+               return -ENOMEM;
+
+       info->var = q40fb_var;
+       info->fix = q40fb_fix;
+       info->fbops = &q40fb_ops;
+       info->flags = FBINFO_DEFAULT;  /* not as module for now */
+       info->pseudo_palette = info->par;
+       info->par = NULL;
+       info->screen_base = (char *) q40fb_fix.smem_start;
+
+       if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
+               framebuffer_release(info);
+               return -ENOMEM;
+       }
+
+       master_outb(3, DISPLAY_CONTROL_REG);
+
+       if (register_framebuffer(info) < 0) {
+               printk(KERN_ERR "Unable to register Q40 frame buffer\n");
+               fb_dealloc_cmap(&info->cmap);
+               framebuffer_release(info);
+               return -EINVAL;
+       }
+
+       fb_info(info, "Q40 frame buffer alive and kicking !\n");
+       return 0;
+}
+
+static struct platform_driver q40fb_driver = {
+       .probe  = q40fb_probe,
+       .driver = {
+               .name   = "q40fb",
+       },
+};
+
+static struct platform_device q40fb_device = {
+       .name   = "q40fb",
+};
+
+int __init q40fb_init(void)
+{
+       int ret = 0;
+
+       if (fb_get_options("q40fb", NULL))
+               return -ENODEV;
+
+       ret = platform_driver_register(&q40fb_driver);
+
+       if (!ret) {
+               ret = platform_device_register(&q40fb_device);
+               if (ret)
+                       platform_driver_unregister(&q40fb_driver);
+       }
+       return ret;
+}
+
+module_init(q40fb_init);
+MODULE_LICENSE("GPL");