Merge mainline v2.6.27-rc2 tree into linux-omap tree
[pandora-kernel.git] / drivers / video / ps3fb.c
index d61e321..4b5d807 100644 (file)
@@ -116,8 +116,6 @@ struct ps3fb_priv {
        unsigned int irq_no;
 
        u64 context_handle, memory_handle;
-       void *xdr_ea;
-       size_t xdr_size;
        struct gpu_driver_info *dinfo;
 
        u64 vblank_count;       /* frame count */
@@ -186,7 +184,7 @@ static const struct fb_videomode ps3fb_modedb[] = {
         "720p", 50, 1124, 644, 13468, 298, 478, 57, 44, 80, 5,
         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
     },    {
-        /* 1080 */
+        /* 1080i */
         "1080i", 50, 1688, 964, 13468, 264, 600, 94, 62, 88, 5,
         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
     },    {
@@ -234,7 +232,7 @@ static const struct fb_videomode ps3fb_modedb[] = {
        FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
     }, {
        /* 1080if */
-       "1080f", 50, 1920, 1080, 13468, 148, 484, 36, 4, 88, 5,
+       "1080if", 50, 1920, 1080, 13468, 148, 484, 36, 4, 88, 5,
        FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
     }, {
        /* 1080pf */
@@ -276,29 +274,49 @@ static char *mode_option __devinitdata;
 static int ps3fb_cmp_mode(const struct fb_videomode *vmode,
                          const struct fb_var_screeninfo *var)
 {
-       /* resolution + black border must match a native resolution */
-       if (vmode->left_margin + vmode->xres + vmode->right_margin !=
-           var->left_margin + var->xres + var->right_margin ||
-           vmode->upper_margin + vmode->yres + vmode->lower_margin !=
-           var->upper_margin + var->yres + var->lower_margin)
+       long xres, yres, left_margin, right_margin, upper_margin, lower_margin;
+       long dx, dy;
+
+       /* maximum values */
+       if (var->xres > vmode->xres || var->yres > vmode->yres ||
+           var->pixclock > vmode->pixclock ||
+           var->hsync_len > vmode->hsync_len ||
+           var->vsync_len > vmode->vsync_len)
                return -1;
 
-       /* minimum limits for margins */
-       if (vmode->left_margin > var->left_margin ||
-           vmode->right_margin > var->right_margin ||
-           vmode->upper_margin > var->upper_margin ||
-           vmode->lower_margin > var->lower_margin)
+       /* progressive/interlaced must match */
+       if ((var->vmode & FB_VMODE_MASK) != vmode->vmode)
                return -1;
 
-       /* these fields must match exactly */
-       if (vmode->pixclock != var->pixclock ||
-           vmode->hsync_len != var->hsync_len ||
-           vmode->vsync_len != var->vsync_len ||
-           vmode->sync != var->sync ||
-           vmode->vmode != (var->vmode & FB_VMODE_MASK))
+       /* minimum resolution */
+       xres = max(var->xres, 1U);
+       yres = max(var->yres, 1U);
+
+       /* minimum margins */
+       left_margin = max(var->left_margin, vmode->left_margin);
+       right_margin = max(var->right_margin, vmode->right_margin);
+       upper_margin = max(var->upper_margin, vmode->upper_margin);
+       lower_margin = max(var->lower_margin, vmode->lower_margin);
+
+       /* resolution + margins may not exceed native parameters */
+       dx = ((long)vmode->left_margin + (long)vmode->xres +
+             (long)vmode->right_margin) -
+            (left_margin + xres + right_margin);
+       if (dx < 0)
                return -1;
 
-       return 0;
+       dy = ((long)vmode->upper_margin + (long)vmode->yres +
+             (long)vmode->lower_margin) -
+            (upper_margin + yres + lower_margin);
+       if (dy < 0)
+               return -1;
+
+       /* exact match */
+       if (!dx && !dy)
+               return 0;
+
+       /* resolution difference */
+       return (vmode->xres - xres) * (vmode->yres - yres);
 }
 
 static const struct fb_videomode *ps3fb_native_vmode(enum ps3av_mode_num id)
@@ -324,33 +342,96 @@ static const struct fb_videomode *ps3fb_vmode(int id)
 static unsigned int ps3fb_find_mode(struct fb_var_screeninfo *var,
                                    u32 *ddr_line_length, u32 *xdr_line_length)
 {
-       unsigned int id;
+       unsigned int id, best_id;
+       int diff, best_diff;
        const struct fb_videomode *vmode;
+       long gap;
 
+       best_id = 0;
+       best_diff = INT_MAX;
+       pr_debug("%s: wanted %u [%u] %u x %u [%u] %u\n", __func__,
+                var->left_margin, var->xres, var->right_margin,
+                var->upper_margin, var->yres, var->lower_margin);
        for (id = PS3AV_MODE_480I; id <= PS3AV_MODE_WUXGA; id++) {
                vmode = ps3fb_native_vmode(id);
-               if (!ps3fb_cmp_mode(vmode, var))
-                       goto found;
+               diff = ps3fb_cmp_mode(vmode, var);
+               pr_debug("%s: mode %u: %u [%u] %u x %u [%u] %u: diff = %d\n",
+                        __func__, id, vmode->left_margin, vmode->xres,
+                        vmode->right_margin, vmode->upper_margin,
+                        vmode->yres, vmode->lower_margin, diff);
+               if (diff < 0)
+                       continue;
+               if (diff < best_diff) {
+                       best_id = id;
+                       if (!diff)
+                               break;
+                       best_diff = diff;
+               }
        }
 
-       pr_debug("%s: mode not found\n", __func__);
-       return 0;
+       if (!best_id) {
+               pr_debug("%s: no suitable mode found\n", __func__);
+               return 0;
+       }
+
+       id = best_id;
+       vmode = ps3fb_native_vmode(id);
 
-found:
        *ddr_line_length = vmode->xres * BPP;
 
-       if (!var->xres) {
+       /* minimum resolution */
+       if (!var->xres)
                var->xres = 1;
-               var->right_margin--;
-       }
-       if (!var->yres) {
+       if (!var->yres)
                var->yres = 1;
-               var->lower_margin--;
+
+       /* minimum virtual resolution */
+       if (var->xres_virtual < var->xres)
+               var->xres_virtual = var->xres;
+       if (var->yres_virtual < var->yres)
+               var->yres_virtual = var->yres;
+
+       /* minimum margins */
+       if (var->left_margin < vmode->left_margin)
+               var->left_margin = vmode->left_margin;
+       if (var->right_margin < vmode->right_margin)
+               var->right_margin = vmode->right_margin;
+       if (var->upper_margin < vmode->upper_margin)
+               var->upper_margin = vmode->upper_margin;
+       if (var->lower_margin < vmode->lower_margin)
+               var->lower_margin = vmode->lower_margin;
+
+       /* extra margins */
+       gap = ((long)vmode->left_margin + (long)vmode->xres +
+              (long)vmode->right_margin) -
+             ((long)var->left_margin + (long)var->xres +
+              (long)var->right_margin);
+       if (gap > 0) {
+               var->left_margin += gap/2;
+               var->right_margin += (gap+1)/2;
+               pr_debug("%s: rounded up H to %u [%u] %u\n", __func__,
+                        var->left_margin, var->xres, var->right_margin);
+       }
+
+       gap = ((long)vmode->upper_margin + (long)vmode->yres +
+              (long)vmode->lower_margin) -
+             ((long)var->upper_margin + (long)var->yres +
+              (long)var->lower_margin);
+       if (gap > 0) {
+               var->upper_margin += gap/2;
+               var->lower_margin += (gap+1)/2;
+               pr_debug("%s: rounded up V to %u [%u] %u\n", __func__,
+                        var->upper_margin, var->yres, var->lower_margin);
        }
 
+       /* fixed fields */
+       var->pixclock = vmode->pixclock;
+       var->hsync_len = vmode->hsync_len;
+       var->vsync_len = vmode->vsync_len;
+       var->sync = vmode->sync;
+
        if (ps3_compare_firmware_version(1, 9, 0) >= 0) {
-               *xdr_line_length = GPU_ALIGN_UP(max(var->xres,
-                                                   var->xres_virtual) * BPP);
+               *xdr_line_length = GPU_ALIGN_UP(var->xres_virtual * BPP);
                if (*xdr_line_length > GPU_MAX_LINE_LENGTH)
                        *xdr_line_length = GPU_MAX_LINE_LENGTH;
        } else
@@ -465,22 +546,11 @@ static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
        u32 xdr_line_length, ddr_line_length;
        int mode;
 
-       dev_dbg(info->device, "var->xres:%u info->var.xres:%u\n", var->xres,
-               info->var.xres);
-       dev_dbg(info->device, "var->yres:%u info->var.yres:%u\n", var->yres,
-               info->var.yres);
-
-       /* FIXME For now we do exact matches only */
        mode = ps3fb_find_mode(var, &ddr_line_length, &xdr_line_length);
        if (!mode)
                return -EINVAL;
 
        /* Virtual screen */
-       if (var->xres_virtual < var->xres)
-               var->xres_virtual = var->xres;
-       if (var->yres_virtual < var->yres)
-               var->yres_virtual = var->yres;
-
        if (var->xres_virtual > xdr_line_length / BPP) {
                dev_dbg(info->device,
                        "Horizontal virtual screen size too large\n");
@@ -526,7 +596,7 @@ static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
        }
 
        /* Memory limit */
-       if (var->yres_virtual * xdr_line_length > ps3fb.xdr_size) {
+       if (var->yres_virtual * xdr_line_length > info->fix.smem_len) {
                dev_dbg(info->device, "Not enough memory\n");
                return -ENOMEM;
        }
@@ -549,29 +619,21 @@ static int ps3fb_set_par(struct fb_info *info)
        const struct fb_videomode *vmode;
        u64 dst;
 
-       dev_dbg(info->device, "xres:%d xv:%d yres:%d yv:%d clock:%d\n",
-               info->var.xres, info->var.xres_virtual,
-               info->var.yres, info->var.yres_virtual, info->var.pixclock);
-
        mode = ps3fb_find_mode(&info->var, &ddr_line_length, &xdr_line_length);
        if (!mode)
                return -EINVAL;
 
        vmode = ps3fb_native_vmode(mode & PS3AV_MODE_MASK);
 
-       info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea);
-       info->fix.smem_len = ps3fb.xdr_size;
        info->fix.xpanstep = info->var.xres_virtual > info->var.xres ? 1 : 0;
        info->fix.ypanstep = info->var.yres_virtual > info->var.yres ? 1 : 0;
        info->fix.line_length = xdr_line_length;
 
-       info->screen_base = (char __iomem *)ps3fb.xdr_ea;
-
        par->ddr_line_length = ddr_line_length;
        par->ddr_frame_size = vmode->yres * ddr_line_length;
        par->xdr_frame_size = info->var.yres_virtual * xdr_line_length;
 
-       par->num_frames = ps3fb.xdr_size /
+       par->num_frames = info->fix.smem_len /
                          max(par->ddr_frame_size, par->xdr_frame_size);
 
        /* Keep the special bits we cannot set using fb_var_screeninfo */
@@ -599,13 +661,13 @@ static int ps3fb_set_par(struct fb_info *info)
        }
 
        /* Clear XDR frame buffer memory */
-       memset(ps3fb.xdr_ea, 0, ps3fb.xdr_size);
+       memset((void __force *)info->screen_base, 0, info->fix.smem_len);
 
        /* Clear DDR frame buffer memory */
        lines = vmode->yres * par->num_frames;
        if (par->full_offset)
                lines++;
-       maxlines = ps3fb.xdr_size / ddr_line_length;
+       maxlines = info->fix.smem_len / ddr_line_length;
        for (dst = 0; lines; dst += maxlines * ddr_line_length) {
                unsigned int l = min(lines, maxlines);
                ps3fb_sync_image(info->device, 0, dst, 0, vmode->xres, l,
@@ -949,10 +1011,9 @@ static int ps3fb_xdr_settings(u64 xdr_lpar, struct device *dev)
                        __func__, status);
                return -ENXIO;
        }
-       dev_dbg(dev,
-               "video:%p xdr_ea:%p ioif:%lx lpar:%lx phys:%lx size:%lx\n",
-               ps3fb_videomemory.address, ps3fb.xdr_ea, GPU_IOIF, xdr_lpar,
-               virt_to_abs(ps3fb.xdr_ea), ps3fb_videomemory.size);
+       dev_dbg(dev, "video:%p ioif:%lx lpar:%lx size:%lx\n",
+               ps3fb_videomemory.address, GPU_IOIF, xdr_lpar,
+               ps3fb_videomemory.size);
 
        status = lv1_gpu_context_attribute(ps3fb.context_handle,
                                           L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP,
@@ -1035,6 +1096,7 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
        u64 lpar_reports = 0;
        u64 lpar_reports_size = 0;
        u64 xdr_lpar;
+       void *fb_start;
        int status;
        struct task_struct *task;
        unsigned long max_ps3fb_size;
@@ -1090,7 +1152,7 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
        }
 
        /* vsync interrupt */
-       ps3fb.dinfo = ioremap(lpar_driver_info, 128 * 1024);
+       ps3fb.dinfo = (void __force *)ioremap(lpar_driver_info, 128 * 1024);
        if (!ps3fb.dinfo) {
                dev_err(&dev->core, "%s: ioremap failed\n", __func__);
                goto err_gpu_context_free;
@@ -1100,22 +1162,10 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
        if (retval)
                goto err_iounmap_dinfo;
 
-       /* XDR frame buffer */
-       ps3fb.xdr_ea = ps3fb_videomemory.address;
-       xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb.xdr_ea));
-
        /* Clear memory to prevent kernel info leakage into userspace */
-       memset(ps3fb.xdr_ea, 0, ps3fb_videomemory.size);
-
-       /*
-        * The GPU command buffer is at the start of video memory
-        * As we don't use the full command buffer, we can put the actual
-        * frame buffer at offset GPU_FB_START and save some precious XDR
-        * memory
-        */
-       ps3fb.xdr_ea += GPU_FB_START;
-       ps3fb.xdr_size = ps3fb_videomemory.size - GPU_FB_START;
+       memset(ps3fb_videomemory.address, 0, ps3fb_videomemory.size);
 
+       xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb_videomemory.address));
        retval = ps3fb_xdr_settings(xdr_lpar, &dev->core);
        if (retval)
                goto err_free_irq;
@@ -1129,12 +1179,20 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
        par->new_mode_id = ps3fb_mode;
        par->num_frames = 1;
 
-       info->screen_base = (char __iomem *)ps3fb.xdr_ea;
        info->fbops = &ps3fb_ops;
-
        info->fix = ps3fb_fix;
-       info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea);
-       info->fix.smem_len = ps3fb.xdr_size;
+
+       /*
+        * The GPU command buffer is at the start of video memory
+        * As we don't use the full command buffer, we can put the actual
+        * frame buffer at offset GPU_FB_START and save some precious XDR
+        * memory
+        */
+       fb_start = ps3fb_videomemory.address + GPU_FB_START;
+       info->screen_base = (char __force __iomem *)fb_start;
+       info->fix.smem_start = virt_to_abs(fb_start);
+       info->fix.smem_len = ps3fb_videomemory.size - GPU_FB_START;
+
        info->pseudo_palette = par->pseudo_palette;
        info->flags = FBINFO_DEFAULT | FBINFO_READS_FAST |
                      FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
@@ -1159,9 +1217,9 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
 
        dev->core.driver_data = info;
 
-       dev_info(info->device, "%s %s, using %lu KiB of video memory\n",
+       dev_info(info->device, "%s %s, using %u KiB of video memory\n",
                 dev_driver_string(info->dev), info->dev->bus_id,
-                ps3fb.xdr_size >> 10);
+                info->fix.smem_len >> 10);
 
        task = kthread_run(ps3fbd, info, DEVICE_NAME);
        if (IS_ERR(task)) {
@@ -1184,7 +1242,7 @@ err_free_irq:
        free_irq(ps3fb.irq_no, &dev->core);
        ps3_irq_plug_destroy(ps3fb.irq_no);
 err_iounmap_dinfo:
-       iounmap((u8 __iomem *)ps3fb.dinfo);
+       iounmap((u8 __force __iomem *)ps3fb.dinfo);
 err_gpu_context_free:
        lv1_gpu_context_free(ps3fb.context_handle);
 err_gpu_memory_free:
@@ -1219,7 +1277,7 @@ static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
                framebuffer_release(info);
                info = dev->core.driver_data = NULL;
        }
-       iounmap((u8 __iomem *)ps3fb.dinfo);
+       iounmap((u8 __force __iomem *)ps3fb.dinfo);
 
        status = lv1_gpu_context_free(ps3fb.context_handle);
        if (status)
@@ -1239,6 +1297,7 @@ static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
 
 static struct ps3_system_bus_driver ps3fb_driver = {
        .match_id       = PS3_MATCH_ID_GRAPHICS,
+       .match_sub_id   = PS3_MATCH_SUB_ID_FB,
        .core.name      = DEVICE_NAME,
        .core.owner     = THIS_MODULE,
        .probe          = ps3fb_probe,