[Intel-gfx] [PATCH 4/7] intel_audio_dump: define get_num_pipes() to get number of pipes for a device ID

[mengdong.lin at intel.com]

From: Mengdong Lin <mengdong.lin at intel.com>

It's for future code sharing because some registers define their bit fields
according to the number of pipes.

Signed-off-by: Mengdong Lin <mengdong.lin at intel.com>
Reviewed-by: Haihao Xiang <haihao.xiang at intel.com>

diff --git a/tools/intel_audio_dump.c b/tools/intel_audio_dump.c
index ffd8288..8632ad3 100644
--- a/tools/intel_audio_dump.c
+++ b/tools/intel_audio_dump.c
@@ -83,6 +83,20 @@ static int disp_reg_base = 0;	/* base address of display registers */
 
 #define read_aud_reg(reg)	INREG(aud_reg_base + (reg))
 
+static int get_num_pipes(void)
+{
+	int num_pipes;
+
+	if (IS_VALLEYVIEW(devid))
+		num_pipes = 2;  /* Valleyview is Gen 7 but only has 2 pipes */
+	else if (IS_G4X(devid) || IS_GEN5(devid))
+		num_pipes = 2;
+	else
+		num_pipes = 3;
+
+	return num_pipes;
+}
+
 static const char * const pixel_clock[] = {
 	[0] = "25.2 / 1.001 MHz",
 	[1] = "25.2 MHz",
-- 
1.8.1.2