[PATCH] fbdev: geode updates

Geode framebuffer driver updates:

- Local mode list (taken from modedb.c) containing only relevant modes.
  This also makes the driver work as a module.

- Make it a PCI driver (from James Simmons <jsimmons@infradead.org>).

- A few other minor cosmetic bits and pieces.

Signed-off-by: David Vrabel <dvrabel@arcom.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 143 insertions, 54 deletions

diff --git a/drivers/video/geode/Kconfig b/drivers/video/geode/Kconfig
index b075fd02de31..5a9b89c3831b 100644
--- a/drivers/video/geode/Kconfig
+++ b/drivers/video/geode/Kconfig
@@ -3,15 +3,13 @@
 #
 config FB_GEODE
         bool "AMD Geode family framebuffer support (EXPERIMENTAL)"
-        default n
-        depends on FB && EXPERIMENTAL && X86
+        depends on FB && PCI && EXPERIMENTAL && X86
         ---help---
           Say 'Y' here to allow you to select framebuffer drivers for
           the AMD Geode family of processors.
 
 config FB_GEODE_GX1
         tristate "AMD Geode GX1 framebuffer support (EXPERIMENTAL)"
-        default n
         depends on FB_GEODE && EXPERIMENTAL
         select FB_CFB_FILLRECT
         select FB_CFB_COPYAREA
@@ -21,9 +19,7 @@ config FB_GEODE_GX1
           Framebuffer driver for the display controller integrated into the
           AMD Geode GX1 processor.
 
-          This driver is also available as a module ( = code which can be
-          inserted and removed from the running kernel whenever you want). The
-          module will be called gx1fb. If you want to compile it as a module,
-          say M here and read <file:Documentation/modules.txt>.
+          To compile this driver as a module, choose M here: the module will be
+          called gx1fb.
 
           If unsure, say N.
diff --git a/drivers/video/geode/geodefb.h b/drivers/video/geode/geodefb.h
index b7bac0a526b3..ae04820e0c57 100644
--- a/drivers/video/geode/geodefb.h
+++ b/drivers/video/geode/geodefb.h
@@ -29,7 +29,6 @@ struct geodefb_par {
         int enable_crt;
         int panel_x; /* dimensions of an attached flat panel, non-zero => enable panel */
         int panel_y;
-        struct pci_dev *vid_dev;
         void __iomem *dc_regs;
         void __iomem *vid_regs;
         struct geode_dc_ops  *dc_ops;
diff --git a/drivers/video/geode/gx1fb_core.c b/drivers/video/geode/gx1fb_core.c
index 83830d24bcda..74a5fca86b8a 100644
--- a/drivers/video/geode/gx1fb_core.c
+++ b/drivers/video/geode/gx1fb_core.c
@@ -30,6 +30,62 @@ static char mode_option[32] = "640x480-16@60";
 static int  crt_option = 1;
 static char panel_option[32] = "";
 
+/* Modes relevant to the GX1 (taken from modedb.c) */
+static const struct fb_videomode __initdata gx1_modedb[] = {
+        /* 640x480-60 VESA */
+        { NULL, 60, 640, 480, 39682,  48, 16, 33, 10, 96, 2,
+          0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 640x480-75 VESA */
+        { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
+          0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 640x480-85 VESA */
+        { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
+          0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 800x600-60 VESA */
+        { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 800x600-75 VESA */
+        { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 800x600-85 VESA */
+        { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 1024x768-60 VESA */
+        { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
+          0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 1024x768-75 VESA */
+        { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 1024x768-85 VESA */
+        { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 1280x960-60 VESA */
+        { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 1280x960-85 VESA */
+        { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 1280x1024-60 VESA */
+        { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 1280x1024-75 VESA */
+        { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+        /* 1280x1024-85 VESA */
+        { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
+          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+          FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+};
+
 static int gx1_line_delta(int xres, int bpp)
 {
         int line_delta = xres * (bpp >> 3);
@@ -47,8 +103,6 @@ static int gx1fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 {
         struct geodefb_par *par = info->par;
 
-        printk(KERN_DEBUG "%s()\n", __FUNCTION__);
-
         /* Maximum resolution is 1280x1024. */
         if (var->xres > 1280 || var->yres > 1024)
                 return -EINVAL;
@@ -146,40 +200,48 @@ static int gx1fb_blank(int blank_mode, struct fb_info *info)
         return par->vid_ops->blank_display(info, blank_mode);
 }
 
-static int __init gx1fb_map_video_memory(struct fb_info *info)
+static int __init gx1fb_map_video_memory(struct fb_info *info, struct pci_dev *dev)
 {
         struct geodefb_par *par = info->par;
         unsigned gx_base;
         int fb_len;
+        int ret;
 
         gx_base = gx1_gx_base();
         if (!gx_base)
                 return -ENODEV;
 
-        par->vid_dev = pci_get_device(PCI_VENDOR_ID_CYRIX,
-                                      PCI_DEVICE_ID_CYRIX_5530_VIDEO, NULL);
-        if (!par->vid_dev)
-                return -ENODEV;
+        ret = pci_enable_device(dev);
+        if (ret < 0)
+                return ret;
 
-        par->vid_regs = ioremap(pci_resource_start(par->vid_dev, 1),
-                                pci_resource_len(par->vid_dev, 1));
+        ret = pci_request_region(dev, 1, "gx1fb (video)");
+        if (ret < 0)
+                return ret;
+        par->vid_regs = ioremap(pci_resource_start(dev, 1),
+                                pci_resource_len(dev, 1));
         if (!par->vid_regs)
                 return -ENOMEM;
 
+        if (!request_mem_region(gx_base + 0x8300, 0x100, "gx1fb (display controller)"))
+                return -EBUSY;
         par->dc_regs = ioremap(gx_base + 0x8300, 0x100);
         if (!par->dc_regs)
                 return -ENOMEM;
 
-        info->fix.smem_start = gx_base + 0x800000;
+        ret = pci_request_region(dev, 0, "gx1fb (frame buffer)");
+        if (ret < 0 )
+                return -EBUSY;
         if ((fb_len = gx1_frame_buffer_size()) < 0)
                 return -ENOMEM;
+        info->fix.smem_start = pci_resource_start(dev, 0);
         info->fix.smem_len = fb_len;
         info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
         if (!info->screen_base)
                 return -ENOMEM;
 
-        printk(KERN_INFO "%s: %d Kibyte of video memory at 0x%lx\n",
-               info->fix.id, info->fix.smem_len / 1024, info->fix.smem_start);
+        dev_info(&dev->dev, "%d Kibyte of video memory at 0x%lx\n",
+                 info->fix.smem_len / 1024, info->fix.smem_start);
 
         return 0;
 }
@@ -216,13 +278,13 @@ static struct fb_ops gx1fb_ops = {
         .fb_cursor      = soft_cursor,
 };
 
-static struct fb_info * __init gx1fb_init_fbinfo(void)
+static struct fb_info * __init gx1fb_init_fbinfo(struct device *dev)
 {
-        struct fb_info *info;
         struct geodefb_par *par;
+        struct fb_info *info;
 
         /* Alloc enough space for the pseudo palette. */
-        info = framebuffer_alloc(sizeof(struct geodefb_par) + sizeof(u32) * 16, NULL);
+        info = framebuffer_alloc(sizeof(struct geodefb_par) + sizeof(u32) * 16, dev);
         if (!info)
                 return NULL;
 
@@ -255,47 +317,37 @@ static struct fb_info * __init gx1fb_init_fbinfo(void)
         /* CRT and panel options */
         par->enable_crt = crt_option;
         if (parse_panel_option(info) < 0)
-                printk(KERN_WARNING "%s: invalid 'panel' option -- disabling flat panel\n",
-                       info->fix.id);
+                printk(KERN_WARNING "gx1fb: invalid 'panel' option -- disabling flat panel\n");
         if (!par->panel_x)
                 par->enable_crt = 1; /* fall back to CRT if no panel is specified */
 
         return info;
 }
 
-
-static struct fb_info *gx1fb_info;
-
-static int __init gx1fb_init(void)
+static int __init gx1fb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
+        struct geodefb_par *par;
         struct fb_info *info;
-        struct geodefb_par *par;
         int ret;
 
-#ifndef MODULE
-        if (fb_get_options("gx1fb", NULL))
-                return -ENODEV;
-#endif
-
-        info = gx1fb_init_fbinfo();
+        info = gx1fb_init_fbinfo(&pdev->dev);
         if (!info)
                 return -ENOMEM;
-        gx1fb_info = info;
-
         par = info->par;
 
         /* GX1 display controller and CS5530 video device */
         par->dc_ops  = &gx1_dc_ops;
         par->vid_ops = &cs5530_vid_ops;
 
-        if ((ret = gx1fb_map_video_memory(info)) < 0) {
-                printk(KERN_ERR "%s: gx1fb_map_video_memory() failed\n", info->fix.id);
+        if ((ret = gx1fb_map_video_memory(info, pdev)) < 0) {
+                dev_err(&pdev->dev, "failed to map frame buffer or controller registers\n");
                 goto err;
         }
 
-        ret = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 16);
+        ret = fb_find_mode(&info->var, info, mode_option,
+                           gx1_modedb, ARRAY_SIZE(gx1_modedb), NULL, 16);
         if (ret == 0 || ret == 4) {
-                printk(KERN_ERR "%s: could not find valid video mode\n", info->fix.id);
+                dev_err(&pdev->dev, "could not find valid video mode\n");
                 ret = -EINVAL;
                 goto err;
         }
@@ -310,39 +362,83 @@ static int __init gx1fb_init(void)
                 ret = -EINVAL;
                 goto err;
         }
+        pci_set_drvdata(pdev, info);
         printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, info->fix.id);
         return 0;
 
   err:
-        if (info->screen_base)
+        if (info->screen_base) {
                 iounmap(info->screen_base);
-        if (par->vid_regs)
+                pci_release_region(pdev, 0);
+        }
+        if (par->vid_regs) {
                 iounmap(par->vid_regs);
-        if (par->dc_regs)
+                pci_release_region(pdev, 1);
+        }
+        if (par->dc_regs) {
                 iounmap(par->dc_regs);
-        if (par->vid_dev)
-                pci_dev_put(par->vid_dev);
+                release_mem_region(gx1_gx_base() + 0x8300, 0x100);
+        }
+
+        pci_disable_device(pdev);
+
         if (info)
                 framebuffer_release(info);
         return ret;
 }
 
-static void __exit gx1fb_cleanup(void)
+static void gx1fb_remove(struct pci_dev *pdev)
 {
-        struct fb_info *info = gx1fb_info;
-        struct geodefb_par *par = gx1fb_info->par;
+        struct fb_info *info = pci_get_drvdata(pdev);
+        struct geodefb_par *par = info->par;
 
         unregister_framebuffer(info);
 
         iounmap((void __iomem *)info->screen_base);
+        pci_release_region(pdev, 0);
+
         iounmap(par->vid_regs);
+        pci_release_region(pdev, 1);
+
         iounmap(par->dc_regs);
+        release_mem_region(gx1_gx_base() + 0x8300, 0x100);
 
-        pci_dev_put(par->vid_dev);
+        pci_disable_device(pdev);
+        pci_set_drvdata(pdev, NULL);
 
         framebuffer_release(info);
 }
 
+static struct pci_device_id gx1fb_id_table[] = {
+        { PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_VIDEO,
+          PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
+          0xff0000, 0 },
+        { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, gx1fb_id_table);
+
+static struct pci_driver gx1fb_driver = {
+        .name           = "gx1fb",
+        .id_table       = gx1fb_id_table,
+        .probe          = gx1fb_probe,
+        .remove         = gx1fb_remove,
+};
+
+static int __init gx1fb_init(void)
+{
+#ifndef MODULE
+        if (fb_get_options("gx1fb", NULL))
+                return -ENODEV;
+#endif
+        return pci_register_driver(&gx1fb_driver);
+}
+
+static void __exit gx1fb_cleanup(void)
+{
+        pci_unregister_driver(&gx1fb_driver);
+}
+
 module_init(gx1fb_init);
 module_exit(gx1fb_cleanup);
 
diff --git a/drivers/video/geode/video_cs5530.c b/drivers/video/geode/video_cs5530.c
index d3764acf8443..649c3943d431 100644
--- a/drivers/video/geode/video_cs5530.c
+++ b/drivers/video/geode/video_cs5530.c
@@ -69,8 +69,6 @@ static const struct cs5530_pll_entry cs5530_pll_table[] = {
         {  4310, 0x2FB1B802, }, /* 232.0000 */
 };
 
-#define NUM_CS5530_FREQUENCIES sizeof(cs5530_pll_table)/sizeof(struct cs5530_pll_entry)
-
 static void cs5530_set_dclk_frequency(struct fb_info *info)
 {
         struct geodefb_par *par = info->par;
@@ -82,7 +80,7 @@ static void cs5530_set_dclk_frequency(struct fb_info *info)
         value = cs5530_pll_table[0].pll_value;
         min = cs5530_pll_table[0].pixclock - info->var.pixclock;
         if (min < 0) min = -min;
-        for (i = 1; i < NUM_CS5530_FREQUENCIES; i++) {
+        for (i = 1; i < ARRAY_SIZE(cs5530_pll_table); i++) {
                 diff = cs5530_pll_table[i].pixclock - info->var.pixclock;
                 if (diff < 0L) diff = -diff;
                 if (diff < min) {