Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 276 insertions, 0 deletions

diff --git a/drivers/video/fbdev/i810/i810_gtf.c b/drivers/video/fbdev/i810/i810_gtf.c
new file mode 100644
index 000000000..9743d51e7
--- /dev/null
+++ b/drivers/video/fbdev/i810/i810_gtf.c
@@ -0,0 +1,276 @@
+/*-*- linux-c -*-
+ *  linux/drivers/video/i810_main.h -- Intel 810 Non-discrete Video Timings 
+ *                                     (VESA GTF)
+ *
+ *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
+ *      All Rights Reserved      
+ *
+ *
+ *  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 "i810_regs.h"
+#include "i810.h"
+#include "i810_main.h"
+
+/*
+ * FIFO and Watermark tables - based almost wholly on i810_wmark.c in 
+ * XFree86 v4.03 by Precision Insight.  Slightly modified for integer 
+ * operation, instead of float
+ */
+
+struct wm_info {
+   u32 freq;
+   u32  wm;
+};
+
+static struct wm_info i810_wm_8_100[] = {
+	{ 15, 0x0070c000 },  { 19, 0x0070c000 },  { 25, 0x22003000 },
+	{ 28, 0x22003000 },  { 31, 0x22003000 },  { 36, 0x22007000 },
+	{ 40, 0x22007000 },  { 45, 0x22007000 },  { 49, 0x22008000 },
+	{ 50, 0x22008000 },  { 56, 0x22008000 },  { 65, 0x22008000 },
+	{ 75, 0x22008000 },  { 78, 0x22008000 },  { 80, 0x22008000 },
+	{ 94, 0x22008000 },  { 96, 0x22107000 },  { 99, 0x22107000 },
+	{ 108, 0x22107000 }, { 121, 0x22107000 }, { 128, 0x22107000 },
+	{ 132, 0x22109000 }, { 135, 0x22109000 }, { 157, 0x2210b000 },
+	{ 162, 0x2210b000 }, { 175, 0x2210b000 }, { 189, 0x2220e000 },
+	{ 195, 0x2220e000 }, { 202, 0x2220e000 }, { 204, 0x2220e000 },
+	{ 218, 0x2220f000 }, { 229, 0x22210000 }, { 234, 0x22210000 }, 
+};
+
+static struct wm_info i810_wm_16_100[] = {
+	{ 15, 0x0070c000 },  { 19, 0x0020c000 },  { 25, 0x22006000 },
+	{ 28, 0x22006000 },  { 31, 0x22007000 },  { 36, 0x22007000 },
+	{ 40, 0x22007000 },  { 45, 0x22007000 },  { 49, 0x22009000 },
+	{ 50, 0x22009000 },  { 56, 0x22108000 },  { 65, 0x2210e000 },
+	{ 75, 0x2210e000 },  { 78, 0x2210e000 },  { 80, 0x22210000 },
+	{ 94, 0x22210000 },  { 96, 0x22210000 },  { 99, 0x22210000 },
+	{ 108, 0x22210000 }, { 121, 0x22210000 }, { 128, 0x22210000 },
+	{ 132, 0x22314000 }, { 135, 0x22314000 }, { 157, 0x22415000 },
+	{ 162, 0x22416000 }, { 175, 0x22416000 }, { 189, 0x22416000 },
+	{ 195, 0x22416000 }, { 202, 0x22416000 }, { 204, 0x22416000 },
+	{ 218, 0x22416000 }, { 229, 0x22416000 },
+};
+
+static struct wm_info i810_wm_24_100[] = {
+	{ 15, 0x0020c000 },  { 19, 0x0040c000 },  { 25, 0x22009000 },
+	{ 28, 0x22009000 },  { 31, 0x2200a000 },  { 36, 0x2210c000 },
+	{ 40, 0x2210c000 },  { 45, 0x2210c000 },  { 49, 0x22111000 },
+	{ 50, 0x22111000 },  { 56, 0x22111000 },  { 65, 0x22214000 },
+	{ 75, 0x22214000 },  { 78, 0x22215000 },  { 80, 0x22216000 },
+	{ 94, 0x22218000 },  { 96, 0x22418000 },  { 99, 0x22418000 },
+	{ 108, 0x22418000 }, { 121, 0x22418000 }, { 128, 0x22419000 },
+	{ 132, 0x22519000 }, { 135, 0x4441d000 }, { 157, 0x44419000 },
+	{ 162, 0x44419000 }, { 175, 0x44419000 }, { 189, 0x44419000 },
+	{ 195, 0x44419000 }, { 202, 0x44419000 }, { 204, 0x44419000 },
+};
+
+static struct wm_info i810_wm_8_133[] = {
+	{ 15, 0x0070c000 },  { 19, 0x0070c000 },  { 25, 0x22003000 },
+	{ 28, 0x22003000 },  { 31, 0x22003000 },  { 36, 0x22007000 },
+	{ 40, 0x22007000 },  { 45, 0x22007000 },  { 49, 0x22008000 },
+	{ 50, 0x22008000 },  { 56, 0x22008000 },  { 65, 0x22008000 },
+	{ 75, 0x22008000 },  { 78, 0x22008000 },  { 80, 0x22008000 },
+	{ 94, 0x22008000 },  { 96, 0x22107000 },  { 99, 0x22107000 },
+	{ 108, 0x22107000 }, { 121, 0x22107000 }, { 128, 0x22107000 },
+	{ 132, 0x22109000 }, { 135, 0x22109000 }, { 157, 0x2210b000 },
+	{ 162, 0x2210b000 }, { 175, 0x2210b000 }, { 189, 0x2220e000 },
+	{ 195, 0x2220e000 }, { 202, 0x2220e000 }, { 204, 0x2220e000 },
+	{ 218, 0x2220f000 }, { 229, 0x22210000 }, { 234, 0x22210000 }, 
+};
+
+static struct wm_info i810_wm_16_133[] = {
+	{ 15, 0x0020c000 },  { 19, 0x0020c000 },  { 25, 0x22006000 },
+	{ 28, 0x22006000 },  { 31, 0x22007000 },  { 36, 0x22007000 },
+	{ 40, 0x22007000 },  { 45, 0x22007000 },  { 49, 0x22009000 },
+	{ 50, 0x22009000 },  { 56, 0x22108000 },  { 65, 0x2210e000 },
+	{ 75, 0x2210e000 },  { 78, 0x2210e000 },  { 80, 0x22210000 },
+	{ 94, 0x22210000 },  { 96, 0x22210000 },  { 99, 0x22210000 },
+	{ 108, 0x22210000 }, { 121, 0x22210000 }, { 128, 0x22210000 },
+	{ 132, 0x22314000 }, { 135, 0x22314000 }, { 157, 0x22415000 },
+	{ 162, 0x22416000 }, { 175, 0x22416000 }, { 189, 0x22416000 },
+	{ 195, 0x22416000 }, { 202, 0x22416000 }, { 204, 0x22416000 },
+	{ 218, 0x22416000 }, { 229, 0x22416000 },
+};
+
+static struct wm_info i810_wm_24_133[] = {
+	{ 15, 0x0020c000 },  { 19, 0x00408000 },  { 25, 0x22009000 },
+	{ 28, 0x22009000 },  { 31, 0x2200a000 },  { 36, 0x2210c000 },
+	{ 40, 0x2210c000 },  { 45, 0x2210c000 },  { 49, 0x22111000 },
+	{ 50, 0x22111000 },  { 56, 0x22111000 },  { 65, 0x22214000 },
+	{ 75, 0x22214000 },  { 78, 0x22215000 },  { 80, 0x22216000 },
+	{ 94, 0x22218000 },  { 96, 0x22418000 },  { 99, 0x22418000 },
+	{ 108, 0x22418000 }, { 121, 0x22418000 }, { 128, 0x22419000 },
+	{ 132, 0x22519000 }, { 135, 0x4441d000 }, { 157, 0x44419000 },
+	{ 162, 0x44419000 }, { 175, 0x44419000 }, { 189, 0x44419000 },
+	{ 195, 0x44419000 }, { 202, 0x44419000 }, { 204, 0x44419000 },
+};
+
+void round_off_xres(u32 *xres) { }
+void round_off_yres(u32 *xres, u32 *yres) { }
+
+/**
+ * i810fb_encode_registers - encode @var to hardware register values
+ * @var: pointer to var structure
+ * @par: pointer to hardware par structure
+ * 
+ * DESCRIPTION: 
+ * Timing values in @var will be converted to appropriate
+ * register values of @par.  
+ */
+void i810fb_encode_registers(const struct fb_var_screeninfo *var,
+			     struct i810fb_par *par, u32 xres, u32 yres)
+{
+	int n, blank_s, blank_e;
+	u8 __iomem *mmio = par->mmio_start_virtual;
+	u8 msr = 0;
+
+	/* Horizontal */
+	/* htotal */
+	n = ((xres + var->right_margin + var->hsync_len + 
+	      var->left_margin) >> 3) - 5;
+	par->regs.cr00 =  (u8) n;
+	par->regs.cr35 = (u8) ((n >> 8) & 1);
+	
+	/* xres */
+	par->regs.cr01 = (u8) ((xres >> 3) - 1);
+
+	/* hblank */
+	blank_e = (xres + var->right_margin + var->hsync_len + 
+		   var->left_margin) >> 3;
+	blank_e--;
+	blank_s = blank_e - 127;
+	if (blank_s < (xres >> 3))
+		blank_s = xres >> 3;
+	par->regs.cr02 = (u8) blank_s;
+	par->regs.cr03 = (u8) (blank_e & 0x1F);
+	par->regs.cr05 = (u8) ((blank_e & (1 << 5)) << 2);
+	par->regs.cr39 = (u8) ((blank_e >> 6) & 1);
+
+	/* hsync */
+	par->regs.cr04 = (u8) ((xres + var->right_margin) >> 3);
+	par->regs.cr05 |= (u8) (((xres + var->right_margin + 
+				  var->hsync_len) >> 3) & 0x1F);
+	
+       	/* Vertical */
+	/* vtotal */
+	n = yres + var->lower_margin + var->vsync_len + var->upper_margin - 2;
+	par->regs.cr06 = (u8) (n & 0xFF);
+	par->regs.cr30 = (u8) ((n >> 8) & 0x0F);
+
+	/* vsync */ 
+	n = yres + var->lower_margin;
+	par->regs.cr10 = (u8) (n & 0xFF);
+	par->regs.cr32 = (u8) ((n >> 8) & 0x0F);
+	par->regs.cr11 = i810_readb(CR11, mmio) & ~0x0F;
+	par->regs.cr11 |= (u8) ((yres + var->lower_margin + 
+				 var->vsync_len) & 0x0F);
+
+	/* yres */
+	n = yres - 1;
+	par->regs.cr12 = (u8) (n & 0xFF);
+	par->regs.cr31 = (u8) ((n >> 8) & 0x0F);
+	
+	/* vblank */
+	blank_e = yres + var->lower_margin + var->vsync_len + 
+		var->upper_margin;
+	blank_e--;
+	blank_s = blank_e - 127;
+	if (blank_s < yres)
+		blank_s = yres;
+	par->regs.cr15 = (u8) (blank_s & 0xFF);
+	par->regs.cr33 = (u8) ((blank_s >> 8) & 0x0F);
+	par->regs.cr16 = (u8) (blank_e & 0xFF);
+	par->regs.cr09 = 0;	
+
+	/* sync polarity */
+	if (!(var->sync & FB_SYNC_HOR_HIGH_ACT))
+		msr |= 1 << 6;
+	if (!(var->sync & FB_SYNC_VERT_HIGH_ACT))
+		msr |= 1 << 7;
+	par->regs.msr = msr;
+
+	/* interlace */
+	if (var->vmode & FB_VMODE_INTERLACED) 
+		par->interlace = (1 << 7) | ((u8) (var->yres >> 4));
+	else 
+		par->interlace = 0;
+
+	if (var->vmode & FB_VMODE_DOUBLE)
+		par->regs.cr09 |= 1 << 7;
+
+	/* overlay */
+	par->ovract = ((var->xres + var->right_margin + var->hsync_len + 
+			var->left_margin - 32) | ((var->xres - 32) << 16));
+}	
+
+void i810fb_fill_var_timings(struct fb_var_screeninfo *var) { }
+
+/**
+ * i810_get_watermark - gets watermark
+ * @var: pointer to fb_var_screeninfo
+ * @par: pointer to i810fb_par structure
+ *
+ * DESCRIPTION:
+ * Gets the required watermark based on 
+ * pixelclock and RAMBUS frequency.
+ * 
+ * RETURNS:
+ * watermark
+ */
+u32 i810_get_watermark(const struct fb_var_screeninfo *var,
+		       struct i810fb_par *par)
+{
+	struct wm_info *wmark = NULL;
+	u32 i, size = 0, pixclock, wm_best = 0, min, diff;
+
+	if (par->mem_freq == 100) {
+		switch (var->bits_per_pixel) { 
+		case 8:
+			wmark = i810_wm_8_100;
+			size = ARRAY_SIZE(i810_wm_8_100);
+			break;
+		case 16:
+			wmark = i810_wm_16_100;
+			size = ARRAY_SIZE(i810_wm_16_100);
+			break;
+		case 24:
+		case 32:
+			wmark = i810_wm_24_100;
+			size = ARRAY_SIZE(i810_wm_24_100);
+		}
+	} else {
+		switch(var->bits_per_pixel) {
+		case 8:
+			wmark = i810_wm_8_133;
+			size = ARRAY_SIZE(i810_wm_8_133);
+			break;
+		case 16:
+			wmark = i810_wm_16_133;
+			size = ARRAY_SIZE(i810_wm_16_133);
+			break;
+		case 24:
+		case 32:
+			wmark = i810_wm_24_133;
+			size = ARRAY_SIZE(i810_wm_24_133);
+		}
+	}
+
+	pixclock = 1000000/var->pixclock;
+	min = ~0;
+	for (i = 0; i < size; i++) {
+		if (pixclock <= wmark[i].freq) 
+			diff = wmark[i].freq - pixclock;
+		else 
+			diff = pixclock - wmark[i].freq;
+		if (diff < min) {
+			wm_best = wmark[i].wm;
+			min = diff;
+		}
+	}
+	return wm_best;		
+}	
+