device/azalia_device: Add function to program a verb table

On some boards, Azalia configuration depends on config settings that are
not known at compile-time. Expose a function to program a verb table, to
be used in subsequent commits.

Change-Id: Ie9607f6e733df66f0ca26a4bb70e0864ce1d4512
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50387
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/device/azalia_device.c

@@ -188,12 +188,33 @@ static int wait_for_valid(u8 *base)
 	return -1;
 }
 
+static int azalia_write_verb(u8 *base, u32 verb)
+{
+	if (wait_for_ready(base) < 0)
+		return -1;
+
+	write32(base + HDA_IC_REG, verb);
+
+	return wait_for_valid(base);
+}
+
+int azalia_program_verb_table(u8 *base, const u32 *verbs, u32 verb_size)
+{
+	if (!verbs)
+		return 0;
+
+	for (u32 i = 0; i < verb_size; i++) {
+		if (azalia_write_verb(base, verbs[i]) < 0)
+			return -1;
+	}
+	return 0;
+}
+
 static void codec_init(struct device *dev, u8 *base, int addr)
 {
 	u32 reg32;
 	const u32 *verb;
 	u32 verb_size;
-	int i;
 
 	printk(BIOS_DEBUG, "azalia_audio: Initializing codec #%d\n", addr);
 
@@ -223,15 +244,7 @@ static void codec_init(struct device *dev, u8 *base, int addr)
 	printk(BIOS_DEBUG, "azalia_audio: verb_size: %u\n", verb_size);
 
 	/* 3 */
-	for (i = 0; i < verb_size; i++) {
+	azalia_program_verb_table(base, verb, verb_size);
-		if (wait_for_ready(base) < 0)
-			return;
-
-		write32(base + HDA_IC_REG, verb[i]);
-
-		if (wait_for_valid(base) < 0)
-			return;
-	}
 	printk(BIOS_DEBUG, "azalia_audio: verb loaded.\n");
 }
 

src/include/device/azalia_device.h

@@ -22,6 +22,7 @@ int azalia_set_bits(void *port, u32 mask, u32 val);
 int azalia_enter_reset(u8 *base);
 int azalia_exit_reset(u8 *base);
 u32 azalia_find_verb(const u32 *verb_table, u32 verb_table_bytes, u32 viddid, const u32 **verb);
+int azalia_program_verb_table(u8 *base, const u32 *verbs, u32 verb_size);
 void azalia_audio_init(struct device *dev);
 extern struct device_operations default_azalia_audio_ops;