video: arm: rpi: Move the video query out of the driver

Add a function to get the video size to the msg handler and remove it from
the video driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>

arch/arm/mach-bcm283x/include/mach/msg.h

@@ -22,4 +22,13 @@ int bcm2835_power_on_module(u32 module);
  */
 int bcm2835_get_mmc_clock(void);
 
+/**
+ * bcm2835_get_video_size() - get the current display size
+ *
+ * @widthp: Returns the width in pixels
+ * @heightp: Returns the height in pixels
+ * @return 0 if OK, -ve on error
+ */
+int bcm2835_get_video_size(int *widthp, int *heightp);
+
 #endif

arch/arm/mach-bcm283x/msg.c

@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <memalign.h>
+#include <phys2bus.h>
 #include <asm/arch/mbox.h>
 
 struct msg_set_power_state {
@@ -20,6 +21,12 @@ struct msg_get_clock_rate {
 	u32 end_tag;
 };
 
+struct msg_query {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
+	u32 end_tag;
+};
+
 int bcm2835_power_on_module(u32 module)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1);
@@ -65,3 +72,22 @@ int bcm2835_get_mmc_clock(void)
 
 	return msg_clk->get_clock_rate.body.resp.rate_hz;
 }
+
+int bcm2835_get_video_size(int *widthp, int *heightp)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(struct msg_query, msg_query, 1);
+	int ret;
+
+	BCM2835_MBOX_INIT_HDR(msg_query);
+	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_query->physical_w_h,
+				     GET_PHYSICAL_W_H);
+	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_query->hdr);
+	if (ret) {
+		printf("bcm2835: Could not query display resolution\n");
+		return ret;
+	}
+	*widthp = msg_query->physical_w_h.body.resp.width;
+	*heightp = msg_query->physical_w_h.body.resp.height;
+
+	return 0;
+}

drivers/video/bcm2835.c

@@ -9,6 +9,7 @@
 #include <memalign.h>
 #include <phys2bus.h>
 #include <asm/arch/mbox.h>
+#include <asm/arch/msg.h>
 #include <asm/global_data.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -18,12 +19,6 @@ vidinfo_t panel_info;
 
 static u32 bcm2835_pitch;
 
-struct msg_query {
-	struct bcm2835_mbox_hdr hdr;
-	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
-	u32 end_tag;
-};
-
 struct msg_setup {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
@@ -40,27 +35,18 @@ struct msg_setup {
 
 void lcd_ctrl_init(void *lcdbase)
 {
-	ALLOC_CACHE_ALIGN_BUFFER(struct msg_query, msg_query, 1);
 	ALLOC_CACHE_ALIGN_BUFFER(struct msg_setup, msg_setup, 1);
 	int ret;
-	u32 w, h;
+	int w, h;
 	u32 fb_start, fb_end;
 
 	debug("bcm2835: Query resolution...\n");
-
-	BCM2835_MBOX_INIT_HDR(msg_query);
-	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_query->physical_w_h,
-					GET_PHYSICAL_W_H);
-	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_query->hdr);
+	ret = bcm2835_get_video_size(&w, &h);
 	if (ret) {
-		printf("bcm2835: Could not query display resolution\n");
 		/* FIXME: How to disable the LCD to prevent errors? hang()? */
 		return;
 	}
 
-	w = msg_query->physical_w_h.body.resp.width;
-	h = msg_query->physical_w_h.body.resp.height;
-
 	debug("bcm2835: Setting up display for %d x %d\n", w, h);
 
 	BCM2835_MBOX_INIT_HDR(msg_setup);