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/kyro/STG4000Ramdac.c b/drivers/video/kyro/STG4000Ramdac.c
new file mode 100644
index 0000000..e6ad037
--- /dev/null
+++ b/drivers/video/kyro/STG4000Ramdac.c
@@ -0,0 +1,163 @@
+/*
+ * linux/drivers/video/kyro/STG4000Ramdac.c
+ *
+ * Copyright (C) 2002 STMicroelectronics
+ *
+ * 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/types.h>
+#include <video/kyro.h>
+
+#include "STG4000Reg.h"
+#include "STG4000Interface.h"
+
+static u32 STG_PIXEL_BUS_WIDTH = 128; /* 128 bit bus width */
+static u32 REF_CLOCK = 14318;
+
+int InitialiseRamdac(volatile STG4000REG __iomem * pSTGReg,
+ u32 displayDepth,
+ u32 displayWidth,
+ u32 displayHeight,
+ s32 HSyncPolarity,
+ s32 VSyncPolarity, u32 * pixelClock)
+{
+ u32 tmp = 0;
+ u32 F = 0, R = 0, P = 0;
+ u32 stride = 0;
+ u32 ulPdiv = 0;
+ u32 physicalPixelDepth = 0;
+ /* Make sure DAC is in Reset */
+ tmp = STG_READ_REG(SoftwareReset);
+
+ if (tmp & 0x1) {
+ CLEAR_BIT(1);
+ STG_WRITE_REG(SoftwareReset, tmp);
+ }
+
+ /* Set Pixel Format */
+ tmp = STG_READ_REG(DACPixelFormat);
+ CLEAR_BITS_FRM_TO(0, 2);
+
+ /* Set LUT not used from 16bpp to 32 bpp ??? */
+ CLEAR_BITS_FRM_TO(8, 9);
+
+ switch (displayDepth) {
+ case 16:
+ {
+ physicalPixelDepth = 16;
+ tmp |= _16BPP;
+ break;
+ }
+ case 32:
+ {
+ /* Set for 32 bits per pixel */
+ physicalPixelDepth = 32;
+ tmp |= _32BPP;
+ break;
+ }
+ default:
+ return -EINVAL;
+ }
+
+ STG_WRITE_REG(DACPixelFormat, tmp);
+
+ /* Workout Bus transfer bandwidth according to pixel format */
+ ulPdiv = STG_PIXEL_BUS_WIDTH / physicalPixelDepth;
+
+ /* Get Screen Stride in pixels */
+ stride = displayWidth;
+
+ /* Set Primary size info */
+ tmp = STG_READ_REG(DACPrimSize);
+ CLEAR_BITS_FRM_TO(0, 10);
+ CLEAR_BITS_FRM_TO(12, 31);
+ tmp |=
+ ((((displayHeight - 1) << 12) | (((displayWidth / ulPdiv) -
+ 1) << 23))
+ | (stride / ulPdiv));
+ STG_WRITE_REG(DACPrimSize, tmp);
+
+
+ /* Set Pixel Clock */
+ *pixelClock = ProgramClock(REF_CLOCK, *pixelClock, &F, &R, &P);
+
+ /* Set DAC PLL Mode */
+ tmp = STG_READ_REG(DACPLLMode);
+ CLEAR_BITS_FRM_TO(0, 15);
+ /* tmp |= ((P-1) | ((F-2) << 2) | ((R-2) << 11)); */
+ tmp |= ((P) | ((F - 2) << 2) | ((R - 2) << 11));
+ STG_WRITE_REG(DACPLLMode, tmp);
+
+ /* Set Prim Address */
+ tmp = STG_READ_REG(DACPrimAddress);
+ CLEAR_BITS_FRM_TO(0, 20);
+ CLEAR_BITS_FRM_TO(20, 31);
+ STG_WRITE_REG(DACPrimAddress, tmp);
+
+ /* Set Cursor details with HW Cursor disabled */
+ tmp = STG_READ_REG(DACCursorCtrl);
+ tmp &= ~SET_BIT(31);
+ STG_WRITE_REG(DACCursorCtrl, tmp);
+
+ tmp = STG_READ_REG(DACCursorAddr);
+ CLEAR_BITS_FRM_TO(0, 20);
+ STG_WRITE_REG(DACCursorAddr, tmp);
+
+ /* Set Video Window */
+ tmp = STG_READ_REG(DACVidWinStart);
+ CLEAR_BITS_FRM_TO(0, 10);
+ CLEAR_BITS_FRM_TO(16, 26);
+ STG_WRITE_REG(DACVidWinStart, tmp);
+
+ tmp = STG_READ_REG(DACVidWinEnd);
+ CLEAR_BITS_FRM_TO(0, 10);
+ CLEAR_BITS_FRM_TO(16, 26);
+ STG_WRITE_REG(DACVidWinEnd, tmp);
+
+ /* Set DAC Border Color to default */
+ tmp = STG_READ_REG(DACBorderColor);
+ CLEAR_BITS_FRM_TO(0, 23);
+ STG_WRITE_REG(DACBorderColor, tmp);
+
+ /* Set Graphics and Overlay Burst Control */
+ STG_WRITE_REG(DACBurstCtrl, 0x0404);
+
+ /* Set CRC Trigger to default */
+ tmp = STG_READ_REG(DACCrcTrigger);
+ CLEAR_BIT(0);
+ STG_WRITE_REG(DACCrcTrigger, tmp);
+
+ /* Set Video Port Control to default */
+ tmp = STG_READ_REG(DigVidPortCtrl);
+ CLEAR_BIT(8);
+ CLEAR_BITS_FRM_TO(16, 27);
+ CLEAR_BITS_FRM_TO(1, 3);
+ CLEAR_BITS_FRM_TO(10, 11);
+ STG_WRITE_REG(DigVidPortCtrl, tmp);
+
+ return 0;
+}
+
+/* Ramdac control, turning output to the screen on and off */
+void DisableRamdacOutput(volatile STG4000REG __iomem * pSTGReg)
+{
+ u32 tmp;
+
+ /* Disable DAC for Graphics Stream Control */
+ tmp = (STG_READ_REG(DACStreamCtrl)) & ~SET_BIT(0);
+ STG_WRITE_REG(DACStreamCtrl, tmp);
+}
+
+void EnableRamdacOutput(volatile STG4000REG __iomem * pSTGReg)
+{
+ u32 tmp;
+
+ /* Enable DAC for Graphics Stream Control */
+ tmp = (STG_READ_REG(DACStreamCtrl)) | SET_BIT(0);
+ STG_WRITE_REG(DACStreamCtrl, tmp);
+}