dcp: Add get_tiling_state

Signed-off-by: Hector Martin <[email protected]>

Author: marcan

drivers/gpu/drm/apple/iomfb.h

@@ -364,4 +364,17 @@ struct iomfb_set_matrix_resp {
 	u32 ret;
 } __packed;
 
+struct dcpep_get_tiling_state_req {
+	u32 event;
+	u32 param;
+	u32 value;
+	u8 value_null;
+	u8 padding[3];
+} __packed;
+
+struct dcpep_get_tiling_state_resp {
+	u32 value;
+	u32 ret;
+} __packed;
+
 #endif

drivers/gpu/drm/apple/iomfb_template.c

@@ -977,6 +977,16 @@ dcpep_cb_swap_complete_intent_gated(struct apple_dcp *dcp,
 		info->width, info->height);
 }
 
+static struct dcpep_get_tiling_state_resp
+dcpep_cb_get_tiling_state(struct apple_dcp *dcp,
+			  struct dcpep_get_tiling_state_req *req)
+{
+	return (struct dcpep_get_tiling_state_resp){
+		.value = 0,
+		.ret = 1,
+	};
+}
+
 TRAMPOLINE_VOID(trampoline_nop, dcpep_cb_nop);
 TRAMPOLINE_OUT(trampoline_true, dcpep_cb_true, u8);
 TRAMPOLINE_OUT(trampoline_false, dcpep_cb_false, u8);
@@ -1022,6 +1032,8 @@ TRAMPOLINE_IN(trampoline_enable_backlight_message_ap_gated,
 	      iomfbep_cb_enable_backlight_message_ap_gated, u8);
 TRAMPOLINE_IN(trampoline_pr_publish, iomfb_cb_pr_publish,
 	      struct iomfb_property);
+TRAMPOLINE_INOUT(trampoline_get_tiling_state, dcpep_cb_get_tiling_state,
+		 struct dcpep_get_tiling_state_req, struct dcpep_get_tiling_state_resp);
 
 /*
  * Callback for swap requests. If a swap failed, we'll never get a swap

drivers/gpu/drm/apple/iomfb_v13_2.c

@@ -51,6 +51,8 @@ static const iomfb_cb_handler cb_handlers[IOMFB_MAX_CB] = {
 	[110] = trampoline_true, /* create_iomfb_service */
 	[111] = trampoline_true, /* create_backlight_service */
 	[112] = trampoline_true, /* create_nvram_servce? */
+	[113] = trampoline_get_tiling_state,
+	[114] = trampoline_false, /* set_tiling_state */
 	[119] = dcpep_cb_boot_1,
 	[120] = trampoline_false, /* is_dark_boot */
 	[121] = trampoline_false, /* is_dark_boot / is_waking_from_hibernate*/