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| author | Diana Z <dzigterman@chromium.org> | 2022-06-03 16:59:05 -0600 |
|---|---|---|
| committer | Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> | 2022-06-07 16:30:07 +0000 |
| commit | f82d96d6a690aaaf7222a6200c02fdc34614ca7f (patch) | |
| tree | a30545eca7f404d75a04ab79a455ec6bf7362c38 /driver/retimer | |
| parent | 38b9c4b824f34b3aa81f2399ce91b88077197d52 (diff) | |
| download | chrome-ec-f82d96d6a690aaaf7222a6200c02fdc34614ca7f.tar.gz | |
ANX7483: Add EQ tuning interface
Add an API which may be used to adjust the EQ settings of pins on the
retimer individually.
BRANCH=None
BUG=b:230694492
TEST=zmake testall
Signed-off-by: Diana Z <dzigterman@chromium.org>
Change-Id: I26ddb01cb3d84ef074545d05a5836ad6e385ed92
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3689783
Reviewed-by: Peter Marheine <pmarheine@chromium.org>
Diffstat (limited to 'driver/retimer')
| -rw-r--r-- | driver/retimer/anx7483.c | 29 | ||||
| -rw-r--r-- | driver/retimer/anx7483.h | 3 |
2 files changed, 32 insertions, 0 deletions
diff --git a/driver/retimer/anx7483.c b/driver/retimer/anx7483.c index 2add843611..6804fd3de8 100644 --- a/driver/retimer/anx7483.c +++ b/driver/retimer/anx7483.c @@ -6,6 +6,7 @@ */ #include "anx7483.h" +#include "retimer/anx7483_public.h" #include "chipset.h" #include "common.h" #include "console.h" @@ -315,6 +316,34 @@ enum ec_error_list anx7483_set_default_tuning(const struct usb_mux *me, return EC_SUCCESS; } +enum ec_error_list anx7483_set_eq(const struct usb_mux *me, + enum anx7483_tune_pin pin, + enum anx7483_eq_setting eq) +{ + int reg, value; + + if (pin == ANX7483_PIN_UTX1) + reg = ANX7483_UTX1_PORT_CFG0_REG; + else if (pin == ANX7483_PIN_UTX2) + reg = ANX7483_UTX2_PORT_CFG0_REG; + else if (pin == ANX7483_PIN_URX1) + reg = ANX7483_URX1_PORT_CFG0_REG; + else if (pin == ANX7483_PIN_URX2) + reg = ANX7483_URX2_PORT_CFG0_REG; + else if (pin == ANX7483_PIN_DRX1) + reg = ANX7483_DRX1_PORT_CFG0_REG; + else if (pin == ANX7483_PIN_DRX2) + reg = ANX7483_DRX2_PORT_CFG0_REG; + else + return EC_ERROR_INVAL; + + RETURN_ERROR(anx7483_read(me, reg, &value)); + value &= ~ANX7483_CFG0_EQ_MASK; + value |= eq << ANX7483_CFG0_EQ_SHIFT; + + return anx7483_write(me, reg, value); +} + const struct usb_mux_driver anx7483_usb_retimer_driver = { .init = anx7483_init, .set = anx7483_set, diff --git a/driver/retimer/anx7483.h b/driver/retimer/anx7483.h index 2caf007a03..d5f6723818 100644 --- a/driver/retimer/anx7483.h +++ b/driver/retimer/anx7483.h @@ -50,6 +50,9 @@ #define ANX7483_DRX1_PORT_CFG0_REG 0x5C #define ANX7483_DRX2_PORT_CFG0_REG 0x20 +#define ANX7483_CFG0_EQ_SHIFT 4 +#define ANX7483_CFG0_EQ_MASK GENMASK(7, 4) + /* * Default CFG0 value to apply: 9.2 dB with optimized tuning step */ |