index : renesas/drm.git	android live master
	libdrm, cloned from git://anongit.freedesktop.org/mesa/drm	Laurent Pinchart

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path: root/linux-core

Mode	Name	Size
-rw-r--r--	Config.in	594	logplain
-rw-r--r--	Doxyfile	41652	logplain
-rw-r--r--	Kconfig	3476	logplain
-rw-r--r--	Makefile	10539	logplain
-rw-r--r--	Makefile.kernel	2880	logplain
-rw-r--r--	README.drm	1850	logplain
-rw-r--r--	ati_pcigart.c	5407	logplain
-rw-r--r--	drmP.h	35328	logplain
-rw-r--r--	drm_agpsupport.c	13240	logplain
-rw-r--r--	drm_auth.c	6295	logplain
-rw-r--r--	drm_bufs.c	34951	logplain
-rw-r--r--	drm_context.c	15265	logplain
-rw-r--r--	drm_dma.c	5913	logplain
-rw-r--r--	drm_drawable.c	1959	logplain
-rw-r--r--	drm_drv.c	33999	logplain
-rw-r--r--	drm_fops.c	4207	logplain
-rw-r--r--	drm_init.c	3796	logplain
-rw-r--r--	drm_ioctl.c	9229	logplain
-rw-r--r--	drm_irq.c	9682	logplain
-rw-r--r--	drm_lock.c	4871	logplain
-rw-r--r--	drm_memory.h	9464	logplain
-rw-r--r--	drm_memory_debug.h	12305	logplain
-rw-r--r--	drm_os_linux.h	4803	logplain
-rw-r--r--	drm_pci.c	4574	logplain
-rw-r--r--	drm_proc.c	15405	logplain
-rw-r--r--	drm_scatter.c	5964	logplain
-rw-r--r--	drm_stub.c	6750	logplain
-rw-r--r--	drm_vm.c	18821	logplain
-rw-r--r--	ffb.h	282	logplain
-rw-r--r--	ffb_context.c	17484	logplain
-rw-r--r--	ffb_drv.c	9621	logplain
-rw-r--r--	ffb_drv.h	10783	logplain
-rw-r--r--	i810_dma.c	37301	logplain
-rw-r--r--	i810_drm.h	9370	logplain
-rw-r--r--	i810_drv.c	2006	logplain
-rw-r--r--	i810_drv.h	8713	logplain
-rw-r--r--	i830_dma.c	41361	logplain
-rw-r--r--	i830_drm.h	10879	logplain
-rw-r--r--	i830_drv.c	2121	logplain
-rw-r--r--	i830_drv.h	10065	logplain
-rw-r--r--	i830_irq.c	5631	logplain
-rw-r--r--	i915_drv.c	837	logplain
-rw-r--r--	mach64_drv.c	1887	logplain
-rw-r--r--	mga_drv.c	1989	logplain
-rw-r--r--	r128_drv.c	2036	logplain
-rw-r--r--	radeon_drv.c	1857	logplain
-rw-r--r--	savage.h	1519	logplain
-rw-r--r--	savage_dma.c	1564	logplain
-rw-r--r--	savage_drm.h	7224	logplain
-rw-r--r--	savage_drv.c	7932	logplain
-rw-r--r--	savage_drv.h	1343	logplain
-rw-r--r--	sis_drv.c	1765	logplain
-rw-r--r--	tdfx_drv.c	1912	logplain

generated by cgit v1.2.3 (git 2.25.1) at 2025-11-25 22:26:00 +0000

/*
 * Copyright © 2007 David Airlie
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *     David Airlie
 */
    /*
     *  Modularization
     */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>

#include "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "i915_drm.h"
#include "i915_drv.h"

struct intelfb_par {
	struct drm_device *dev;
	struct drm_crtc *crtc;
        struct drm_display_mode *fb_mode;
	struct drm_framebuffer *fb;
};
/*
static int
var_to_refresh(const struct fb_var_screeninfo *var)
{
	int xtot = var->xres + var->left_margin + var->right_margin +
		   var->hsync_len;
	int ytot = var->yres + var->upper_margin + var->lower_margin +
		   var->vsync_len;

	return (1000000000 / var->pixclock * 1000 + 500) / xtot / ytot;
}*/

static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green,
			   unsigned blue, unsigned transp,
			   struct fb_info *info)
{
	struct intelfb_par *par = info->par;
	struct drm_framebuffer *fb = par->fb;
	struct drm_crtc *crtc = par->crtc;

	if (regno > 255)
		return 1;

	if (fb->depth == 8) {
		if (crtc->funcs->gamma_set)
			crtc->funcs->gamma_set(crtc, red, green, blue, regno);
		return 0;
	}

	if (regno < 16) {
		switch (fb->depth) {
		case 15:
			fb->pseudo_palette[regno] = ((red & 0xf800) >>  1) |
				((green & 0xf800) >>  6) |
				((blue & 0xf800) >> 11);
			break;
		case 16:
			fb->pseudo_palette[regno] = (red & 0xf800) |
				((green & 0xfc00) >>  5) |
				((blue  & 0xf800) >> 11);
			break;
		case 24:
		case 32:
			fb->pseudo_palette[regno] = ((red & 0xff00) << 8) |
				(green & 0xff00) |
				((blue  & 0xff00) >> 8);
			break;
		}
	}

	return 0;
}

static int intelfb_check_var(struct fb_var_screeninfo *var,
			     struct fb_info *info)
{
        struct intelfb_par *par = info->par;
        /*struct drm_device *dev = par->dev;*/
	struct drm_framebuffer *fb = par->fb;
        /*struct drm_output *output;*/
        int depth/*, found = 0*/;

        if (!var->pixclock)
                return -EINVAL;

        /* Need to resize the fb object !!! */
        if (var->xres > fb->width || var->yres > fb->height) {
                DRM_ERROR("Requested width/height is greater than current fb object %dx%d > %dx%d\n",var->xres,var->yres,fb->width,fb->height);
                DRM_ERROR("Need resizing code.\n");
                return -EINVAL;
        }

        switch (var->bits_per_pixel) {
        case 16:
                depth = (var->green.length == 6) ? 16 : 15;
                break;
        case 32:
                depth = (var->transp.length > 0) ? 32 : 24;
                break;
        default:
                depth = var->bits_per_pixel;
                break;
        }
                
        switch (depth) {
        case 8:
                var->red.offset = 0;
                var->green.offset = 0;
                var->blue.offset = 0;
                var->red.length = 8;
                var->green.length = 8;
                var->blue.length = 8;
                var->transp.length = 0;
                var->transp.offset = 0;
                break;
        case 15:
                var->red.offset = 10;
                var->green.offset = 5;
                var->blue.offset = 0;
                var->red.length = 5;
                var->green.length = 5;
                var->blue.length = 5;
                var->transp.length = 1;
                var->transp.offset = 15;
                break;
        case 16:
                var->red.offset = 11;
                var->green.offset = 5;
                var->blue.offset = 0;
                var->red.length = 5;
                var->green.length = 6;
                var->blue.length = 5;
                var->transp.length = 0;
                var->transp.offset = 0;
                break;
        case 24:
                var->red.offset = 16;
                var->green.offset = 8;
                var->blue.offset = 0;
                var->red.length = 8;
                var->green.length = 8;
                var->blue.length = 8;
                var->transp.length = 0;
                var->transp.offset = 0;
                break;
        case 32:
                var->red.offset = 16;
                var->green.offset = 8;
                var->blue.offset = 0;
                var->red.length = 8;
                var->green.length = 8;
                var->blue.length = 8;
                var->transp.length = 8;
                var->transp.offset = 24;
                break;
        default:
                return -EINVAL; 
        }

#if 0
        /* Here we walk the output mode list and look for modes. If we haven't
         * got it, then bail. Not very nice, so this is disabled.
         * In the set_par code, we create our mode based on the incoming
         * parameters. Nicer, but may not be desired by some.
         */
        list_for_each_entry(output, &dev->mode_config.output_list, head) {
                if (output->crtc == par->crtc)
                        break;
        }
    
        list_for_each_entry(drm_mode, &output->modes, head) {
                if (drm_mode->hdisplay == var->xres &&
                    drm_mode->vdisplay == var->yres &&
                    (((PICOS2KHZ(var->pixclock))/1000) >= ((drm_mode->clock/1000)-1)) &&
                    (((PICOS2KHZ(var->pixclock))/1000) <= ((drm_mode->clock/1000)+1))) {
			found = 1;
			break;
		}
	}
 
        if (!found)
                return -EINVAL;
#endif

	return 0;
}

/* this will let fbcon do the mode init */
/* FIXME: take mode config lock? */
static int intelfb_set_par(struct fb_info *info)
{
	struct intelfb_par *par = info->par;
	struct drm_framebuffer *fb = par->fb;
	struct drm_device *dev = par->dev;
        struct drm_display_mode *drm_mode, *search_mode;
        struct drm_output *output = NULL;
        struct fb_var_screeninfo *var = &info->var;
	int found = 0;
	int changed = 0;

	DRM_DEBUG("\n");

        switch (var->bits_per_pixel) {
        case 16:
                fb->depth = (var->green.length == 6) ? 16 : 15;
                break;
        case 32:
                fb->depth = (var->transp.length > 0) ? 32 : 24;
                break;
        default:
                fb->depth = var->bits_per_pixel;
                break;
        }

        fb->bits_per_pixel = var->bits_per_pixel;

        info->fix.line_length = fb->pitch;
        info->fix.smem_len = info->fix.line_length * fb->height;
        info->fix.visual = (fb->depth == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;

        info->screen_size = info->fix.smem_len; /* ??? */

	/* create a drm mode */
        drm_mode = drm_mode_create(dev);
        drm_mode->hdisplay = var->xres;
        drm_mode->hsync_start = drm_mode->hdisplay + var->right_margin;
        drm_mode->hsync_end = drm_mode->hsync_start + var->hsync_len;
        drm_mode->htotal = drm_mode->hsync_end + var->left_margin;
        drm_mode->vdisplay = var->yres;
        drm_mode->vsync_start = drm_mode->vdisplay + var->lower_margin;
        drm_mode->vsync_end = drm_mode->vsync_start + var->vsync_len;
        drm_mode->vtotal = drm_mode->vsync_end + var->upper_margin;
        drm_mode->clock = PICOS2KHZ(var->pixclock);
        drm_mode->vrefresh = drm_mode_vrefresh(drm_mode);
	drm_mode->flags = 0;
	drm_mode->flags |= var->sync & FB_SYNC_HOR_HIGH_ACT ? V_PHSYNC : V_NHSYNC;
	drm_mode->flags |= var->sync & FB_SYNC_VERT_HIGH_ACT ? V_PVSYNC : V_NVSYNC;

        drm_mode_set_name(drm_mode);
	drm_mode_set_crtcinfo(drm_mode, CRTC_INTERLACE_HALVE_V);

	found = 0;
        list_for_each_entry(output, &dev->mode_config.output_list, head) {
                if (output->crtc == par->crtc){
			found = 1;
                        break;
		}
        }

	/* no output bound, bail */
	if (!found)
		return -EINVAL;

	found = 0;
	drm_mode_debug_printmodeline(dev, drm_mode);    
        list_for_each_entry(search_mode, &output->modes, head) {
		drm_mode_debug_printmodeline(dev, search_mode);
		if (drm_mode_equal(drm_mode, search_mode)) {
			drm_mode_destroy(dev, drm_mode);
			drm_mode = search_mode;
			found = 1;
			break;
		}
	}
	
	/* If we didn't find a matching mode that exists on our output,
	 * create a new attachment for the incoming user specified mode
	 */
	if (!found) {
		if (par->fb_mode) {
			/* this also destroys the mode */
			drm_mode_detachmode_crtc(dev, par->fb_mode);
		}
	
		par->fb_mode = drm_mode;
		drm_mode_debug_printmodeline(dev, drm_mode);
		/* attach mode */
		drm_mode_attachmode_crtc(dev, par->crtc, par->fb_mode);
	}

	/* re-attach fb */
	if (!par->crtc->fb) {
		par->crtc->fb = par->fb;