diff options
| author | Dino Li <Dino.Li@ite.com.tw> | 2017-10-31 14:59:50 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-10-31 21:49:24 -0700 |
| commit | 73d0ed0b794b13ceff5620b5c15ba7a3760d1f35 (patch) | |
| tree | 3083fa0ba743eb5d70e90c15394c7d479f51c756 /driver/usb_mux_it5205.h | |
| parent | b979c8ade3c46d67ef739bfe22361b8fc5db6b34 (diff) | |
| download | chrome-ec-73d0ed0b794b13ceff5620b5c15ba7a3760d1f35.tar.gz | |
driver: add IT5205 mux driver
Add support the ITE IT5205 Type-C USB alternate mode mux.
BRANCH=none
BUG=none
TEST=1. Successfully verify chip ID.
2. Verify set_mux() and get_mux() functions set and return
consistent values.
3. The mux control register setting as expected after set_mux().
Change-Id: I9ff066dc9e74683df1371b70290e2aeaa86cb96b
Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
Reviewed-on: https://chromium-review.googlesource.com/741211
Reviewed-by: Shawn N <shawnn@chromium.org>
Diffstat (limited to 'driver/usb_mux_it5205.h')
| -rw-r--r-- | driver/usb_mux_it5205.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/driver/usb_mux_it5205.h b/driver/usb_mux_it5205.h new file mode 100644 index 0000000000..0cebeed71a --- /dev/null +++ b/driver/usb_mux_it5205.h @@ -0,0 +1,32 @@ +/* Copyright 2017 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * ITE IT5205 Type-C USB alternate mode mux. + */ + +#ifndef __CROS_EC_USB_MUX_IT5205_H +#define __CROS_EC_USB_MUX_IT5205_H + +/* 8 bit i2c slave address is 0xb0 or 0x90 depends on address setting pin. */ + +/* Chip ID registers */ +#define IT5205_REG_CHIP_ID3 0x4 +#define IT5205_REG_CHIP_ID2 0x5 +#define IT5205_REG_CHIP_ID1 0x6 +#define IT5205_REG_CHIP_ID0 0x7 + +/* MUX power down register */ +#define IT5205_REG_MUXPDR 0x10 +#define IT5205_MUX_POWER_DOWN (1 << 0) + +/* MUX control register */ +#define IT5205_REG_MUXCR 0x11 +#define IT5205_POLARITY_INVERTED (1 << 4) + +#define IT5205_DP_USB_CTRL_MASK 0x0f +#define IT5205_DP 0x0f +#define IT5205_DP_USB 0x03 +#define IT5205_USB 0x07 + +#endif /* __CROS_EC_USB_MUX_IT5205_H */ |