Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/video/bt455.h b/drivers/video/bt455.h
new file mode 100644
index 0000000..b7591fe
--- /dev/null
+++ b/drivers/video/bt455.h
@@ -0,0 +1,95 @@
+/*
+ * linux/drivers/video/bt455.h
+ *
+ * Copyright 2003 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
+ *
+ * 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/types.h>
+#include <asm/system.h>
+
+/*
+ * Bt455 byte-wide registers, 32-bit aligned.
+ */
+struct bt455_regs {
+ volatile u8 addr_cmap;
+ u8 pad0[3];
+ volatile u8 addr_cmap_data;
+ u8 pad1[3];
+ volatile u8 addr_clr;
+ u8 pad2[3];
+ volatile u8 addr_ovly;
+ u8 pad3[3];
+};
+
+static inline void bt455_select_reg(struct bt455_regs *regs, int ir)
+{
+ mb();
+ regs->addr_cmap = ir & 0x0f;
+}
+
+/*
+ * Read/write to a Bt455 color map register.
+ */
+static inline void bt455_read_cmap_entry(struct bt455_regs *regs, int cr,
+ u8* red, u8* green, u8* blue)
+{
+ bt455_select_reg(regs, cr);
+ mb();
+ *red = regs->addr_cmap_data & 0x0f;
+ rmb();
+ *green = regs->addr_cmap_data & 0x0f;
+ rmb();
+ *blue = regs->addr_cmap_data & 0x0f;
+}
+
+static inline void bt455_write_cmap_entry(struct bt455_regs *regs, int cr,
+ u8 red, u8 green, u8 blue)
+{
+ bt455_select_reg(regs, cr);
+ wmb();
+ regs->addr_cmap_data = red & 0x0f;
+ wmb();
+ regs->addr_cmap_data = green & 0x0f;
+ wmb();
+ regs->addr_cmap_data = blue & 0x0f;
+}
+
+static inline void bt455_write_ovly_entry(struct bt455_regs *regs, int cr,
+ u8 red, u8 green, u8 blue)
+{
+ bt455_select_reg(regs, cr);
+ wmb();
+ regs->addr_ovly = red & 0x0f;
+ wmb();
+ regs->addr_ovly = green & 0x0f;
+ wmb();
+ regs->addr_ovly = blue & 0x0f;
+}
+
+static inline void bt455_set_cursor(struct bt455_regs *regs)
+{
+ mb();
+ regs->addr_ovly = 0x0f;
+ wmb();
+ regs->addr_ovly = 0x0f;
+ wmb();
+ regs->addr_ovly = 0x0f;
+}
+
+static inline void bt455_erase_cursor(struct bt455_regs *regs)
+{
+ /* bt455_write_cmap_entry(regs, 8, 0x00, 0x00, 0x00); */
+ /* bt455_write_cmap_entry(regs, 9, 0x00, 0x00, 0x00); */
+ bt455_write_ovly_entry(regs, 8, 0x03, 0x03, 0x03);
+ bt455_write_ovly_entry(regs, 9, 0x07, 0x07, 0x07);
+
+ wmb();
+ regs->addr_ovly = 0x09;
+ wmb();
+ regs->addr_ovly = 0x09;
+ wmb();
+ regs->addr_ovly = 0x09;
+}