diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2020-12-05 18:52:38 +0100 |
|---|---|---|
| committer | Hung-Te Lin <hungte@chromium.org> | 2020-12-17 13:55:10 +0000 |
| commit | 4919028e6207e011f93488732ebaaf70b8377cd5 (patch) | |
| tree | 40215a5af607635ce530ebd3b39a7a736bf41d8f /src | |
| parent | f23c6a8ff5f093476633156d8dff782080335bb0 (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')
| -rw-r--r-- | src/device/azalia_device.c | 12 | ||||
| -rw-r--r-- | src/include/device/azalia_device.h | 2 |
2 files changed, 14 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; diff --git a/src/include/device/azalia_device.h b/src/include/device/azalia_device.h index 194572578f..1b4e769c3f 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; |