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| author | Angel Pons <th3fanbus@gmail.com> | 2021-03-18 17:09:49 +0100 |
|---|---|---|
| committer | Angel Pons <th3fanbus@gmail.com> | 2021-03-22 13:00:28 +0000 |
| commit | f20ef65e65f4a71bee3173f7c16048f87fe56379 (patch) | |
| tree | 95e1c111dbe764666530ca4b366edb6c46062091 | |
| parent | aa566ad07f732016c0f0f962400a40a7ae3d4c8d (diff) | |
| download | coreboot-f20ef65e65f4a71bee3173f7c16048f87fe56379.tar.xz | |
sb/intel/lynxpoint/hda_verb.c: Add missing codec detect steps
Lynx Point reference code version 1.9.1 and soc/intel/common/hda_verb.c
perform these steps. Add them to Lynx Point as well. With this change,
Lynx Point and soc/intel/common hda_verb.c files are now identical.
Change-Id: I2fc592f73697a43bd5a3315ac80c77ff9f00da9b
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51642
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
| -rw-r--r-- | src/southbridge/intel/lynxpoint/hda_verb.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/southbridge/intel/lynxpoint/hda_verb.c b/src/southbridge/intel/lynxpoint/hda_verb.c index a7bfa4a705..41ecac11c5 100644 --- a/src/southbridge/intel/lynxpoint/hda_verb.c +++ b/src/southbridge/intel/lynxpoint/hda_verb.c @@ -5,7 +5,6 @@ #include <device/mmio.h> #include <delay.h> -#include "pch.h" #include "hda_verb.h" int hda_codec_detect(u8 *base) @@ -19,6 +18,20 @@ int hda_codec_detect(u8 *base) /* Write back the value once reset bit is set. */ write16(base + HDA_GCAP_REG, read16(base + HDA_GCAP_REG)); + /* + * Clear the "State Change Status Register" STATESTS bits + * for each of the "SDIN Stat Change Status Flag" + */ + write8(base + HDA_STATESTS_REG, 0xf); + + /* Turn off the link and poll RESET# bit until it reads back as 0 */ + if (azalia_enter_reset(base) < 0) + goto no_codec; + + /* Turn on the link and poll RESET# bit until it reads back as 1 */ + if (azalia_exit_reset(base) < 0) + goto no_codec; + /* Read in Codec location (BAR + 0xe)[2..0] */ reg8 = read8(base + HDA_STATESTS_REG); reg8 &= 0x0f; |