xfree86: Add options support for OutputClass Options

Add support for setting options in OutputClass Sections and having these
applied to any matching output devices.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

hw/xfree86/common/xf86Option.c

@@ -44,6 +44,7 @@
 #include "xf86Xinput.h"
 #include "xf86Optrec.h"
 #include "xf86Parser.h"
+#include "xf86platformBus.h" /* For OutputClass functions */
 #include "optionstr.h"
 
 static Bool ParseOptionValue(int scrnIndex, XF86OptionPtr options,
@@ -64,7 +65,7 @@ static Bool ParseOptionValue(int scrnIndex, XF86OptionPtr options,
  *
  * The order of precedence for options is:
  *
- *   extraOpts, display, confScreen, monitor, device
+ *   extraOpts, display, confScreen, monitor, device, outputClassOptions
  */
 
 void
@@ -79,6 +80,8 @@ xf86CollectOptions(ScrnInfoPtr pScrn, XF86OptionPtr extraOpts)
     pScrn->options = NULL;
 
     for (i = pScrn->numEntities - 1; i >= 0; i--) {
+        xf86MergeOutputClassOptions(pScrn->entityList[i], &pScrn->options);
+
         device = xf86GetDevFromEntity(pScrn->entityList[i],
                                       pScrn->entityInstanceList[i]);
         if (device && device->options) {

hw/xfree86/common/xf86platformBus.c

@@ -310,6 +310,48 @@ xf86platformProbe(void)
     return 0;
 }
 
+void
+xf86MergeOutputClassOptions(int entityIndex, void **options)
+{
+    const EntityPtr entity = xf86Entities[entityIndex];
+    struct xf86_platform_device *dev = NULL;
+    XF86ConfOutputClassPtr cl;
+    XF86OptionPtr classopts;
+    int i = 0;
+
+    switch (entity->bus.type) {
+    case BUS_PLATFORM:
+        dev = entity->bus.id.plat;
+        break;
+    case BUS_PCI:
+        for (i = 0; i < xf86_num_platform_devices; i++) {
+            if (MATCH_PCI_DEVICES(xf86_platform_devices[i].pdev,
+                                  entity->bus.id.pci)) {
+                dev = &xf86_platform_devices[i];
+                break;
+            }
+        }
+        break;
+    default:
+        xf86Msg(X_DEBUG, "xf86MergeOutputClassOptions unsupported bus type %d\n",
+                entity->bus.type);
+    }
+
+    if (!dev)
+        return;
+
+    for (cl = xf86configptr->conf_outputclass_lst; cl; cl = cl->list.next) {
+        if (!OutputClassMatches(cl, dev) || !cl->option_lst)
+            continue;
+
+        xf86Msg(X_INFO, "Applying OutputClass \"%s\" options to %s\n",
+                cl->identifier, dev->attribs->path);
+
+        classopts = xf86optionListDup(cl->option_lst);
+        *options = xf86optionListMerge(*options, classopts);
+    }
+}
+
 static int
 xf86ClaimPlatformSlot(struct xf86_platform_device * d, DriverPtr drvp,
                   int chipset, GDevPtr dev, Bool active)

hw/xfree86/common/xf86platformBus.h

@@ -42,6 +42,7 @@ struct xf86_platform_device {
 int xf86platformProbe(void);
 int xf86platformProbeDev(DriverPtr drvp);
 int xf86platformAddGPUDevices(DriverPtr drvp);
+void xf86MergeOutputClassOptions(int entityIndex, void **options);
 
 extern int xf86_num_platform_devices;
 extern struct xf86_platform_device *xf86_platform_devices;
@@ -161,6 +162,7 @@ extern void xf86platformPrimary(void);
 #else
 
 static inline int xf86platformAddGPUDevices(DriverPtr drvp) { return FALSE; }
+static inline void xf86MergeOutputClassOptions(int index, void **options) {}
 
 #endif
 

hw/xfree86/man/xorg.conf.man

@@ -1280,6 +1280,16 @@ For example:
 Check the case-sensitive string
 .RI \*q matchdriver \*q
 against the kernel driver of the device.
+.PP
+When an output device has been matched to the
+.B OutputClass
+section, any
+.B Option
+entries are applied to the device. See the
+.B Device
+section below for a description of the remaining
+.B Option
+entries.
 .SH "DEVICE SECTION"
 The config file may have multiple
 .B Device

hw/xfree86/parser/OutputClass.c

@@ -36,6 +36,7 @@ static const xf86ConfigSymTabRec OutputClassTab[] = {
     {ENDSECTION, "endsection"},
     {IDENTIFIER, "identifier"},
     {DRIVER, "driver"},
+    {OPTION, "option"},
     {MATCH_DRIVER, "matchdriver"},
     {-1, ""},
 };
@@ -60,6 +61,8 @@ xf86freeOutputClassList(XF86ConfOutputClassPtr ptr)
             free(group);
         }
 
+        xf86optionListFree(ptr->option_lst);
+
         prev = ptr;
         ptr = ptr->list.next;
         free(prev);
@@ -112,6 +115,9 @@ xf86parseOutputClassSection(void)
             else
                 ptr->driver = xf86_lex_val.str;
             break;
+        case OPTION:
+            ptr->option_lst = xf86parseOption(ptr->option_lst);
+            break;
         case MATCH_DRIVER:
             if (xf86getSubToken(&(ptr->comment)) != STRING)
                 Error(QUOTE_MSG, "MatchDriver");

hw/xfree86/parser/xf86Parser.h

@@ -338,6 +338,7 @@ typedef struct {
     char *identifier;
     char *driver;
     struct xorg_list match_driver;
+    XF86OptionPtr option_lst;
     char *comment;
 } XF86ConfOutputClassRec, *XF86ConfOutputClassPtr;