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authorAngel Pons <th3fanbus@gmail.com>2020-12-05 18:52:38 +0100
committerHung-Te Lin <hungte@chromium.org>2020-12-17 13:55:10 +0000
commit4919028e6207e011f93488732ebaaf70b8377cd5 (patch)
tree40215a5af607635ce530ebd3b39a7a736bf41d8f /src/device
parentf23c6a8ff5f093476633156d8dff782080335bb0 (diff)
device/azalia_device.c: Add codec reset helpers
Many uses of `azalia_set_bits` are used to toggle the reset bit. To avoid having to repeat the register operations and the corresponding comment, create two helpers with self-explanatory names. They will be put to use in subsequent commits, with one change for each function. Change-Id: If0594fdaf99319f08a2e272cd37958f0f216e654 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48355 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Diffstat (limited to 'src/device')
-rw-r--r--src/device/azalia_device.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/device/azalia_device.c b/src/device/azalia_device.c
index ab370f95d7..9306e2ac37 100644
--- a/src/device/azalia_device.c
+++ b/src/device/azalia_device.c
@@ -34,6 +34,18 @@ int azalia_set_bits(void *port, u32 mask, u32 val)
return 0;
}
+int azalia_enter_reset(u8 *base)
+{
+ /* Set bit 0 to 0 to enter reset state (BAR + 0x8)[0] */
+ return 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] */
+ return azalia_set_bits(base + HDA_GCTL_REG, HDA_GCTL_CRST, HDA_GCTL_CRST);
+}
+
static int codec_detect(u8 *base)
{
u32 reg32;