drm: simplify sysfs code for drm
This simplifies the sysfs code for the drm and add a dri_library_name
attribute which can be used by a userspace app to figure out which
library to load.
From: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/radeon_drv.c b/drivers/char/drm/radeon_drv.c
index 999d745..b04ed1b 100644
--- a/drivers/char/drm/radeon_drv.c
+++ b/drivers/char/drm/radeon_drv.c
@@ -42,6 +42,16 @@
MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers\n");
module_param_named(no_wb, radeon_no_wb, int, 0444);
+static int dri_library_name(struct drm_device *dev, char *buf)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ int family = dev_priv->flags & CHIP_FAMILY_MASK;
+
+ return snprintf(buf, PAGE_SIZE, "%s\n",
+ (family < CHIP_R200) ? "radeon" :
+ ((family < CHIP_R300) ? "r200" :
+ "r300"));
+}
static struct pci_device_id pciidlist[] = {
radeon_PCI_IDS
@@ -61,6 +71,7 @@
.lastclose = radeon_driver_lastclose,
.unload = radeon_driver_unload,
.vblank_wait = radeon_driver_vblank_wait,
+ .dri_library_name = dri_library_name,
.irq_preinstall = radeon_driver_irq_preinstall,
.irq_postinstall = radeon_driver_irq_postinstall,
.irq_uninstall = radeon_driver_irq_uninstall,