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Diffstat (limited to 'linux-core/drm_fb.c')
-rw-r--r--linux-core/drm_fb.c267
1 files changed, 248 insertions, 19 deletions
diff --git a/linux-core/drm_fb.c b/linux-core/drm_fb.c
index c0453258..8fd0f620 100644
--- a/linux-core/drm_fb.c
+++ b/linux-core/drm_fb.c
@@ -39,9 +39,11 @@
#include <linux/init.h>
#include "drmP.h"
+#include "drm_crtc.h"
+
struct drmfb_par {
struct drm_device *dev;
- struct drm_framebuffer *fb;
+ struct drm_crtc *crtc;
};
static int drmfb_setcolreg(unsigned regno, unsigned red, unsigned green,
@@ -49,11 +51,20 @@ static int drmfb_setcolreg(unsigned regno, unsigned red, unsigned green,
struct fb_info *info)
{
struct drmfb_par *par = info->par;
- struct drm_framebuffer *fb = par->fb;
- if (regno > 17)
+ struct drm_framebuffer *fb = par->crtc->fb;
+ struct drm_crtc *crtc = par->crtc;
+
+ if (regno > 255)
return 1;
- if (regno < 16) {
+ 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) |
@@ -72,8 +83,118 @@ static int drmfb_setcolreg(unsigned regno, unsigned red, unsigned green,
((blue & 0xff00) >> 8);
break;
}
+ }
+
+ return 0;
+}
+
+static int drmfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct drmfb_par *par = info->par;
+ struct drm_device *dev = par->dev;
+ struct drm_display_mode *drm_mode;
+ struct drm_output *output;
+ int depth;
+
+ 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 = 6;
+ 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 &&
+ drm_mode->clock != 0)
+ break;
}
+ if (!drm_mode)
+ return -EINVAL;
+#endif
+
return 0;
}
@@ -81,9 +202,74 @@ static int drmfb_setcolreg(unsigned regno, unsigned red, unsigned green,
static int drmfb_set_par(struct fb_info *info)
{
struct drmfb_par *par = info->par;
+ struct drm_framebuffer *fb = par->crtc->fb;
struct drm_device *dev = par->dev;
+ struct drm_display_mode *drm_mode;
+ struct fb_var_screeninfo *var = &info->var;
+ struct drm_output *output;
+
+ 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 * ((fb->bits_per_pixel + 1) / 8);
+ 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; /* ??? */
+
+ /* Should we walk the output's modelist or just create our own ???
+ * For now, we create and destroy a mode based on the incoming
+ * parameters. But there's commented out code below which scans
+ * the output list too.
+ */
+#if 0
+ 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 &&
+ drm_mode->clock != 0)
+ break;
+ }
+#else
+ 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_set_name(drm_mode);
+#endif
+
+ if (!drm_crtc_set_mode(par->crtc, drm_mode, 0, 0))
+ return -EINVAL;
+
+ /* Have to destroy our created mode if we're not searching the mode
+ * list for it.
+ */
+#if 1
+ drm_mode_destroy(dev, drm_mode);
+#endif
- drm_set_desired_modes(dev);
return 0;
}
@@ -94,6 +280,7 @@ static struct fb_ops drmfb_ops = {
// .fb_write = drmfb_write,
// .fb_release = drmfb_release,
// .fb_ioctl = drmfb_ioctl,
+ .fb_check_var = drmfb_check_var,
.fb_set_par = drmfb_set_par,
.fb_setcolreg = drmfb_setcolreg,
.fb_fillrect = cfb_fillrect,
@@ -101,12 +288,13 @@ static struct fb_ops drmfb_ops = {
.fb_imageblit = cfb_imageblit,
};
-int drmfb_probe(struct drm_device *dev, struct drm_framebuffer *fb)
+int drmfb_probe(struct drm_device *dev, struct drm_crtc *crtc)
{
struct fb_info *info;
+ struct drm_framebuffer *fb = crtc->fb;
struct drmfb_par *par;
struct device *device = &dev->pdev->dev;
- unsigned long size = (8*1024*1024); /* FIXME */
+ struct drm_display_mode *mode = crtc->desired_mode;
int ret;
info = framebuffer_alloc(sizeof(struct drmfb_par), device);
@@ -119,20 +307,20 @@ int drmfb_probe(struct drm_device *dev, struct drm_framebuffer *fb)
par = info->par;
par->dev = dev;
- par->fb = fb;
+ par->crtc = crtc;
info->fbops = &drmfb_ops;
strcpy(info->fix.id, "drmfb");
- info->fix.smem_start = fb->offset + dev->mode_config.fb_base;
- info->fix.smem_len = size;
info->fix.type = FB_TYPE_PACKED_PIXELS;
- info->fix.visual = FB_VISUAL_DIRECTCOLOR;
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
info->fix.accel = FB_ACCEL_NONE;
info->fix.type_aux = 0;
info->fix.mmio_start = 0;
info->fix.mmio_len = 0;
info->fix.line_length = fb->pitch * ((fb->bits_per_pixel + 1) / 8);
+ info->fix.smem_start = fb->offset + dev->mode_config.fb_base;
+ info->fix.smem_len = info->fix.line_length * fb->height;
info->flags = FBINFO_DEFAULT;
@@ -141,11 +329,9 @@ int drmfb_probe(struct drm_device *dev, struct drm_framebuffer *fb)
DRM_ERROR("error mapping fb: %d\n", ret);
info->screen_base = fb->virtual_base;
- info->screen_size = size;
+ info->screen_size = info->fix.smem_len; /* ??? */
info->pseudo_palette = fb->pseudo_palette;
- info->var.xres = fb->width;
info->var.xres_virtual = fb->pitch;
- info->var.yres = fb->height;
info->var.yres_virtual = fb->height;
info->var.bits_per_pixel = fb->bits_per_pixel;
info->var.xoffset = 0;
@@ -155,24 +341,67 @@ int drmfb_probe(struct drm_device *dev, struct drm_framebuffer *fb)
info->var.width = -1;
info->var.vmode = FB_VMODE_NONINTERLACED;
+ info->var.xres = mode->hdisplay;
+ info->var.right_margin = mode->hsync_start - mode->hdisplay;
+ info->var.hsync_len = mode->hsync_end - mode->hsync_start;
+ info->var.left_margin = mode->htotal - mode->hsync_end;
+ info->var.yres = mode->vdisplay;
+ info->var.lower_margin = mode->vsync_start - mode->vdisplay;
+ info->var.vsync_len = mode->vsync_end - mode->vsync_start;
+ info->var.upper_margin = mode->vtotal - mode->vsync_end;
+ info->var.pixclock = 10000000 / mode->htotal * 1000 /
+ mode->vtotal * 100000 / mode->vrefresh;
+
DRM_DEBUG("fb depth is %d\n", fb->depth);
switch(fb->depth) {
case 8:
+ info->var.red.offset = 0;
+ info->var.green.offset = 0;
+ info->var.blue.offset = 0;
+ info->var.red.length = 8; /* 8bit DAC */
+ info->var.green.length = 8;
+ info->var.blue.length = 8;
+ info->var.transp.offset = 0;
+ info->var.transp.length = 0;
+ break;
case 15:
+ info->var.red.offset = 10;
+ info->var.green.offset = 5;
+ info->var.blue.offset = 0;
+ info->var.red.length = info->var.green.length =
+ info->var.blue.length = 5;
+ info->var.transp.offset = 15;
+ info->var.transp.length = 1;
+ break;
case 16:
+ info->var.red.offset = 11;
+ info->var.green.offset = 5;
+ info->var.blue.offset = 0;
+ info->var.red.length = 5;
+ info->var.green.length = 6;
+ info->var.blue.length = 5;
+ info->var.transp.offset = 0;
+ info->var.transp.length = 0;
break;
- default:
case 24:
+ info->var.red.offset = 16;
+ info->var.green.offset = 8;
+ info->var.blue.offset = 0;
+ info->var.red.length = info->var.green.length =
+ info->var.blue.length = 8;
+ info->var.transp.offset = 0;
+ info->var.transp.length = 0;
+ break;
case 32:
info->var.red.offset = 16;
info->var.green.offset = 8;
info->var.blue.offset = 0;
info->var.red.length = info->var.green.length =
info->var.blue.length = 8;
- if (fb->depth == 32) {
- info->var.transp.offset = 24;
- info->var.transp.length = 8;
- }
+ info->var.transp.offset = 24;
+ info->var.transp.length = 8;
+ break;
+ default:
break;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 15:55:09 +0000