[coreboot-gerrit] Change in coreboot[master]: device/azalia_device.c: Add codec reset helpers

[Angel Pons (Code Review)]

Angel Pons has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/48355 )

Change subject: device/azalia_device.c: Add codec reset helpers
......................................................................

device/azalia_device.c: Add codec reset helpers

Many uses of `azalia_set_bits` are used to toggle the reset bit. They
will be put to use in subsequent commits, one change per function.

Change-Id: If0594fdaf99319f08a2e272cd37958f0f216e654
Signed-off-by: Angel Pons 
---
M src/device/azalia_device.c
M src/include/device/azalia_device.h
2 files changed, 14 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/55/48355/1

diff --git a/src/device/azalia_device.c b/src/device/azalia_device.c
index b18d938..a457cf1 100644
--- a/src/device/azalia_device.c
+++ b/src/device/azalia_device.c
@@ -34,6 +34,18 @@
    return 0;
 }

+int azalia_enter_reset(void *port)
+{
+	/* Set bit 0 to 0 to enter reset state (BAR + 0x8)[0] */
+	azalia_set_bits(base + HDA_GCTL_REG, HDA_GCTL_CRST, 0);
+}
+
+int azalia_exit_reset(u8 *base)
+{
+	/* Set bit 0 to 1 to exit reset state (BAR + 0x8)[0] */
+	azalia_set_bits(base + HDA_GCTL_REG, HDA_GCTL_CRST, HDA_GCTL_CRST);
+}
+
 static int codec_detect(u8 *base)
 {
    u32 reg32;
diff --git a/src/include/device/azalia_device.h b/src/include/device/azalia_device.h
index 1945725..1b4e769 100644
--- a/src/include/device/azalia_device.h
+++ b/src/include/device/azalia_device.h
@@ -19,6 +19,8 @@
 #define   HDA_ICII_VALID	(1 << 1)

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);
 void azalia_audio_init(struct device *dev);
 extern struct device_operations default_azalia_audio_ops;