Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 328 insertions, 0 deletions

diff --git a/drivers/video/tx3912fb.c b/drivers/video/tx3912fb.c
new file mode 100644
index 000000000000..39d9ca71856b
--- /dev/null
+++ b/drivers/video/tx3912fb.c
@@ -0,0 +1,328 @@
+/*
+ *  drivers/video/tx3912fb.c
+ *
+ *  Copyright (C) 1999 Harald Koerfgen
+ *  Copyright (C) 2001 Steven Hill (sjhill@realitydiluted.com)
+ *
+ * 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.
+ *
+ *  Framebuffer for LCD controller in TMPR3912/05 and PR31700 processors
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/tty.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/pm.h>
+#include <linux/fb.h>
+#include <asm/io.h>
+#include <asm/bootinfo.h>
+#include <asm/uaccess.h>
+#include <asm/tx3912.h>
+#include <video/tx3912.h>
+
+/*
+ * Frame buffer, palette and console structures
+ */
+static struct fb_info fb_info;
+static u32 cfb8[16];
+
+static struct fb_fix_screeninfo tx3912fb_fix __initdata = {
+        .id =           "tx3912fb",
+        .smem_len =     ((240 * 320)/2),
+        .type =         FB_TYPE_PACKED_PIXELS,
+        .visual =       FB_VISUAL_TRUECOLOR, 
+        .xpanstep =     1,
+        .ypanstep =     1,
+        .ywrapstep =    1,
+        .accel =        FB_ACCEL_NONE,
+};
+
+static struct fb_var_screeninfo tx3912fb_var = {
+        .xres =         240,
+        .yres =         320,
+        .xres_virtual = 240,
+        .yres_virtual = 320,
+        .bits_per_pixel =4,
+        .red =          { 0, 4, 0 },    /* ??? */
+        .green =        { 0, 4, 0 },
+        .blue =         { 0, 4, 0 },
+        .activate =     FB_ACTIVATE_NOW,
+        .width =        -1,
+        .height =       -1,
+        .pixclock =     20000,
+        .left_margin =  64,
+        .right_margin = 64,
+        .upper_margin = 32,
+        .lower_margin = 32,
+        .hsync_len =    64,
+        .vsync_len =    2,
+        .vmode =        FB_VMODE_NONINTERLACED,
+};
+
+/*
+ * Interface used by the world
+ */
+int tx3912fb_init(void);
+
+static int tx3912fb_setcolreg(u_int regno, u_int red, u_int green,
+                              u_int blue, u_int transp,
+                              struct fb_info *info);
+
+/*
+ * Macros
+ */
+#define get_line_length(xres_virtual, bpp) \
+                (u_long) (((int) xres_virtual * (int) bpp + 7) >> 3)
+
+/*
+ * Frame buffer operations structure used by console driver
+ */
+static struct fb_ops tx3912fb_ops = {
+        .owner          = THIS_MODULE,
+        .fb_setcolreg   = tx3912fb_setcolreg,
+        .fb_fillrect    = cfb_fillrect,
+        .fb_copyarea    = cfb_copyarea,
+        .fb_imageblit   = cfb_imageblit,
+        .fb_cursor      = soft_cursor,
+};
+
+static int tx3912fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+        /*
+         * Memory limit
+         */
+        line_length =
+            get_line_length(var->xres_virtual, var->bits_per_pixel);
+        if ((line_length * var->yres_virtual) > info->fix.smem_len)
+                return -ENOMEM;
+
+        return 0;
+}
+
+static int tx3912fb_set_par(struct fb_info *info)
+{
+        u_long tx3912fb_paddr = 0;
+
+        /* Disable the video logic */
+        outl(inl(TX3912_VIDEO_CTRL1) &
+             ~(TX3912_VIDEO_CTRL1_ENVID | TX3912_VIDEO_CTRL1_DISPON),
+             TX3912_VIDEO_CTRL1);
+        udelay(200);
+
+        /* Set start address for DMA transfer */
+        outl(tx3912fb_paddr, TX3912_VIDEO_CTRL3);
+
+        /* Set end address for DMA transfer */
+        outl((tx3912fb_paddr + tx3912fb_fix.smem_len + 1), TX3912_VIDEO_CTRL4);
+
+        /* Set the pixel depth */
+        switch (info->var.bits_per_pixel) {
+        case 1:
+                /* Monochrome */
+                outl(inl(TX3912_VIDEO_CTRL1) &
+                     ~TX3912_VIDEO_CTRL1_BITSEL_MASK, TX3912_VIDEO_CTRL1);
+                info->fix.visual = FB_VISUAL_MONO10;
+                break;
+        case 4:
+                /* 4-bit gray */
+                outl(inl(TX3912_VIDEO_CTRL1) &
+                     ~TX3912_VIDEO_CTRL1_BITSEL_MASK, TX3912_VIDEO_CTRL1);
+                outl(inl(TX3912_VIDEO_CTRL1) |
+                     TX3912_VIDEO_CTRL1_BITSEL_4BIT_GRAY,
+                     TX3912_VIDEO_CTRL1);
+                info->fix.visual = FB_VISUAL_TRUECOLOR;
+                break;
+        case 8:
+                /* 8-bit color */
+                outl(inl(TX3912_VIDEO_CTRL1) &
+                     ~TX3912_VIDEO_CTRL1_BITSEL_MASK, TX3912_VIDEO_CTRL1);
+                outl(inl(TX3912_VIDEO_CTRL1) |
+                     TX3912_VIDEO_CTRL1_BITSEL_8BIT_COLOR,
+                     TX3912_VIDEO_CTRL1);
+                info->fix.visual = FB_VISUAL_TRUECOLOR;
+                break;
+        case 2:
+        default:
+                /* 2-bit gray */
+                outl(inl(TX3912_VIDEO_CTRL1) &
+                     ~TX3912_VIDEO_CTRL1_BITSEL_MASK, TX3912_VIDEO_CTRL1);
+                outl(inl(TX3912_VIDEO_CTRL1) |
+                     TX3912_VIDEO_CTRL1_BITSEL_2BIT_GRAY,
+                     TX3912_VIDEO_CTRL1);
+                info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+                break;
+        }
+
+        /* Enable the video clock */
+        outl(inl(TX3912_CLK_CTRL) | TX3912_CLK_CTRL_ENVIDCLK,
+             TX3912_CLK_CTRL);
+
+        /* Unfreeze video logic and enable DF toggle */
+        outl(inl(TX3912_VIDEO_CTRL1) &
+             ~(TX3912_VIDEO_CTRL1_ENFREEZEFRAME |
+               TX3912_VIDEO_CTRL1_DFMODE)
+             , TX3912_VIDEO_CTRL1);
+        udelay(200);
+
+        /* Enable the video logic */
+        outl(inl(TX3912_VIDEO_CTRL1) |
+             (TX3912_VIDEO_CTRL1_ENVID | TX3912_VIDEO_CTRL1_DISPON),
+             TX3912_VIDEO_CTRL1);
+
+        info->fix.line_length = get_line_length(var->xres_virtual,
+                                            var->bits_per_pixel);
+}
+
+/*
+ * Set a single color register
+ */
+static int tx3912fb_setcolreg(u_int regno, u_int red, u_int green,
+                              u_int blue, u_int transp,
+                              struct fb_info *info)
+{
+        if (regno > 255)
+                return 1;
+
+        if (regno < 16)
+                ((u32 *)(info->pseudo_palette))[regno] = ((red & 0xe000) >> 8)
+                    | ((green & 0xe000) >> 11)
+                    | ((blue & 0xc000) >> 14);
+        return 0;
+}
+
+int __init tx3912fb_setup(char *options);
+
+/*
+ * Initialization of the framebuffer
+ */
+int __init tx3912fb_init(void)
+{
+        u_long tx3912fb_paddr = 0;
+        int size = (info->var.bits_per_pixel == 8) ? 256 : 16;
+        char *option = NULL;
+
+        if (fb_get_options("tx3912fb", &option))
+                return -ENODEV;
+        tx3912fb_setup(option);
+
+        /* Disable the video logic */
+        outl(inl(TX3912_VIDEO_CTRL1) &
+             ~(TX3912_VIDEO_CTRL1_ENVID | TX3912_VIDEO_CTRL1_DISPON),
+             TX3912_VIDEO_CTRL1);
+        udelay(200);
+
+        /* Set start address for DMA transfer */
+        outl(tx3912fb_paddr, TX3912_VIDEO_CTRL3);
+
+        /* Set end address for DMA transfer */
+        outl((tx3912fb_paddr + tx3912fb_fix.smem_len + 1), TX3912_VIDEO_CTRL4);
+
+        /* Set the pixel depth */
+        switch (tx3912fb_var.bits_per_pixel) {
+        case 1:
+                /* Monochrome */
+                outl(inl(TX3912_VIDEO_CTRL1) &
+                     ~TX3912_VIDEO_CTRL1_BITSEL_MASK, TX3912_VIDEO_CTRL1);
+                tx3912fb_fix.visual = FB_VISUAL_MONO10;
+                break;
+        case 4:
+                /* 4-bit gray */
+                outl(inl(TX3912_VIDEO_CTRL1) &
+                     ~TX3912_VIDEO_CTRL1_BITSEL_MASK, TX3912_VIDEO_CTRL1);
+                outl(inl(TX3912_VIDEO_CTRL1) |
+                     TX3912_VIDEO_CTRL1_BITSEL_4BIT_GRAY,
+                     TX3912_VIDEO_CTRL1);
+                tx3912fb_fix.visual = FB_VISUAL_TRUECOLOR;
+                tx3912fb_fix.grayscale = 1;
+                break;
+        case 8:
+                /* 8-bit color */
+                outl(inl(TX3912_VIDEO_CTRL1) &
+                     ~TX3912_VIDEO_CTRL1_BITSEL_MASK, TX3912_VIDEO_CTRL1);
+                outl(inl(TX3912_VIDEO_CTRL1) |
+                     TX3912_VIDEO_CTRL1_BITSEL_8BIT_COLOR,
+                     TX3912_VIDEO_CTRL1);
+                tx3912fb_fix.visual = FB_VISUAL_TRUECOLOR;
+                break;
+        case 2:
+        default:
+                /* 2-bit gray */
+                outl(inl(TX3912_VIDEO_CTRL1) &
+                     ~TX3912_VIDEO_CTRL1_BITSEL_MASK, TX3912_VIDEO_CTRL1);
+                outl(inl(TX3912_VIDEO_CTRL1) |
+                     TX3912_VIDEO_CTRL1_BITSEL_2BIT_GRAY,
+                     TX3912_VIDEO_CTRL1);
+                tx3912fb_fix.visual = FB_VISUAL_PSEUDOCOLOR;
+                tx3912fb_fix.grayscale = 1;
+                break;
+        }
+
+        /* Enable the video clock */
+        outl(inl(TX3912_CLK_CTRL) | TX3912_CLK_CTRL_ENVIDCLK,
+                TX3912_CLK_CTRL);
+
+        /* Unfreeze video logic and enable DF toggle */
+        outl(inl(TX3912_VIDEO_CTRL1) &
+                ~(TX3912_VIDEO_CTRL1_ENFREEZEFRAME | TX3912_VIDEO_CTRL1_DFMODE),
+                TX3912_VIDEO_CTRL1);
+        udelay(200);
+
+        /* Clear the framebuffer */
+        memset((void *) tx3912fb_fix.smem_start, 0xff, tx3912fb_fix.smem_len);
+        udelay(200);
+
+        /* Enable the video logic */
+        outl(inl(TX3912_VIDEO_CTRL1) |
+                (TX3912_VIDEO_CTRL1_ENVID | TX3912_VIDEO_CTRL1_DISPON),
+                TX3912_VIDEO_CTRL1);
+
+        /*
+         * Memory limit
+         */
+        tx3912fb_fix.line_length =
+            get_line_length(tx3912fb_var.xres_virtual, tx3912fb_var.bits_per_pixel);
+        if ((tx3912fb_fix.line_length * tx3912fb_var.yres_virtual) > tx3912fb_fix.smem_len)
+                return -ENOMEM;
+
+        fb_info.fbops = &tx3912fb_ops;
+        fb_info.var = tx3912fb_var;
+        fb_info.fix = tx3912fb_fix;
+        fb_info.pseudo_palette = pseudo_palette;
+        fb_info.flags = FBINFO_DEFAULT;
+
+        /* Clear the framebuffer */
+        memset((void *) fb_info.fix.smem_start, 0xff, fb_info.fix.smem_len);
+        udelay(200);
+
+        fb_alloc_cmap(&info->cmap, size, 0);
+
+        if (register_framebuffer(&fb_info) < 0)
+                return -1;
+
+        printk(KERN_INFO "fb%d: TX3912 frame buffer using %uKB.\n",
+               fb_info.node, (u_int) (fb_info.fix.smem_len >> 10));
+        return 0;
+}
+
+int __init tx3912fb_setup(char *options)
+{
+        char *this_opt;
+
+        if (!options || !*options)
+                return 0;
+
+        while ((this_opt = strsep(&options, ","))) {
+                if (!strncmp(options, "bpp:", 4))       
+                        tx3912fb_var.bits_per_pixel = simple_strtoul(options+4, NULL, 0);
+        }       
+        return 0;
+}
+
+module_init(tx3912fb_init);
+MODULE_LICENSE("GPL");