[PATCH] drm/radeon/kms: add info query for tile pipes

[Alex Deucher <alexdeucher@gmail.com>]

needed by mesa for htile setup.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
---
 drivers/gpu/drm/radeon/radeon_kms.c |   13 +++++++++++++
 include/drm/radeon_drm.h            |    1 +
 2 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index bf7d4c0..871df03 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -221,6 +221,19 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 			return -EINVAL;
 		}
 		break;
+	case RADEON_INFO_NUM_TILE_PIPES:
+		if (rdev->family >= CHIP_CAYMAN)
+			value = rdev->config.cayman.max_tile_pipes;
+		else if (rdev->family >= CHIP_CEDAR)
+			value = rdev->config.evergreen.max_tile_pipes;
+		else if (rdev->family >= CHIP_RV770)
+			value = rdev->config.rv770.max_tile_pipes;
+		else if (rdev->family >= CHIP_R600)
+			value = rdev->config.r600.max_tile_pipes;
+		else {
+			return -EINVAL;
+		}
+		break;
 	default:
 		DRM_DEBUG_KMS("Invalid request %d\n", info->request);
 		return -EINVAL;
diff --git a/include/drm/radeon_drm.h b/include/drm/radeon_drm.h
index 3bce1a4..7aa5ddd 100644
--- a/include/drm/radeon_drm.h
+++ b/include/drm/radeon_drm.h
@@ -909,6 +909,7 @@ struct drm_radeon_cs {
 #define RADEON_INFO_WANT_CMASK		0x08 /* get access to CMASK on r300 */
 #define RADEON_INFO_CLOCK_CRYSTAL_FREQ	0x09 /* clock crystal frequency */
 #define RADEON_INFO_NUM_BACKENDS	0x0a /* DB/backends for r600+ - need for OQ */
+#define RADEON_INFO_NUM_TILE_PIPES	0x0b /* tile pipes for r600+ */
 
 struct drm_radeon_info {
 	uint32_t		request;
-- 
1.7.1.1