diff options
| author | Rob Barnes <robbarnes@google.com> | 2021-06-07 14:53:59 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-06-14 21:33:03 +0000 |
| commit | 592ef1dafdd59629df85b9852fbb629c0323acd6 (patch) | |
| tree | c31dc2bf908939e9b7816903c3f4775f84d54aca /driver/retimer/ps8811.h | |
| parent | 417c1411ed94cdbc27e99a3ca829b786b9a4ec4e (diff) | |
| download | chrome-ec-592ef1dafdd59629df85b9852fbb629c0323acd6.tar.gz | |
guybrush: Add PS8811 driver
Add PS8811 USB A retimer driver. Reusing USB mux structure even though
the retimer does not have a mux.
BUG=b:176987937
TEST=Build and run
BRANCH=None
Signed-off-by: Rob Barnes <robbarnes@google.com>
Change-Id: Ie11a105f344e6acc1312cda517fdfe54ecb8c8ea
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2946307
Commit-Queue: Diana Z <dzigterman@chromium.org>
Reviewed-by: Diana Z <dzigterman@chromium.org>
Diffstat (limited to 'driver/retimer/ps8811.h')
| -rw-r--r-- | driver/retimer/ps8811.h | 42 |
1 files changed, 39 insertions, 3 deletions
diff --git a/driver/retimer/ps8811.h b/driver/retimer/ps8811.h index 03cf8f604e..81b84d32e5 100644 --- a/driver/retimer/ps8811.h +++ b/driver/retimer/ps8811.h @@ -5,6 +5,8 @@ * PS8811 retimer. */ +#include "usb_mux.h" + #ifndef __CROS_EC_USB_RETIMER_PS8811_H #define __CROS_EC_USB_RETIMER_PS8811_H @@ -26,9 +28,9 @@ /* * PAGE 1 Register Definitions */ -#define PS8811_REG_PAGE1 0x01 +#define PS8811_REG_PAGE1 0x01 -#define PS8811_REG1_USB_BEQ_LEVEL 0x05 +#define PS8811_REG1_USB_BEQ_LEVEL 0x05 #define PS8811_BEQ_PIN_LEVEL_UP_9DB 0x00 #define PS8811_BEQ_PIN_LEVEL_UP_10_5DB 0x01 #define PS8811_BEQ_PIN_LEVEL_UP_12DB 0x02 @@ -52,8 +54,42 @@ #define PS8811_BEQ_I2C_LEVEL_UP_21DB 0x90 #define PS8811_BEQ_I2C_LEVEL_UP_23DB 0xA0 -#define PS8811_REG1_USB_BEQ_CONFIG 0x06 +#define PS8811_REG1_USB_BEQ_CONFIG 0x06 #define PS8811_BEQ_CONFIG_REG_ENABLE BIT(0) +#define PS8811_REG1_USB_CHAN_A_SWING 0x66 +#define PS8811_CHAN_A_SWING_MASK GENMASK(6, 4) +#define PS8811_CHAN_A_SWING_SHIFT 4 + +#define PS8811_REG1_USB_CHAN_B_SWING 0xA4 +#define PS8811_CHAN_B_SWING_MASK GENMASK(2, 0) +#define PS8811_CHAN_B_SWING_SHIFT 0 + +/* De-emphasis -2.2 dB, Pre-shoot 1.2 dB */ +#define PS8811_CHAN_B_DE_2_2_PS_1_2_LSB 0x1 +#define PS8811_CHAN_B_DE_2_2_PS_1_2_MSB 0x13 + +/* De-emphasis -3.5 dB, Pre-shoot 0 dB */ +#define PS8811_CHAN_B_DE_3_5_PS_0_LSB 0x0 +#define PS8811_CHAN_B_DE_3_5_PS_0_MSB 0x5 + +/* De-emphasis -4.5 dB, Pre-shoot 0 dB */ +#define PS8811_CHAN_B_DE_4_5_PS_0_LSB 0x0 +#define PS8811_CHAN_B_DE_4_5_PS_0_MSB 0x6 + +/* De-emphasis -6 dB, Pre-shoot 3 dB */ +#define PS8811_CHAN_B_DE_6_PS_3_LSB 0x4 +#define PS8811_CHAN_B_DE_6_PS_3_MSB 0x16 + +#define PS8811_REG1_USB_CHAN_B_DE_PS_LSB 0xA5 +#define PS8811_CHAN_B_DE_PS_LSB_MASK GENMASK(2, 0) + +#define PS8811_REG1_USB_CHAN_B_DE_PS_MSB 0xA6 +#define PS8811_CHAN_B_DE_PS_MSB_MASK GENMASK(5, 0) + +int ps8811_i2c_read(const struct usb_mux *me, int page, int offset, int *data); +int ps8811_i2c_write(const struct usb_mux *me, int page, int offset, int data); +int ps8811_i2c_field_update(const struct usb_mux *me, int page, int offset, + uint8_t field_mask, uint8_t set_value); #endif /* __CROS_EC_USB_RETIMER_PS8802_H */ |