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https://github.com/Telecominfraproject/OpenCellular.git
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1746c5b0d9
Bits 1 and 3 of the control register are read 1, write 1, but RO firmware may have zero'd these bits. Therefore, always set the bits high, ignoring the read value. TEST=Manual on Samus. Starting from .90 RO, flash new RW and verify BC1.2 charger detection is working. BUG=chrome-os-partner:37241 BRANCH=Samus Change-Id: I2f71718f74e50fe9b664dbe3da1578ee4c995136 Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/254880 Reviewed-by: Alec Berg <alecaberg@chromium.org>
102 lines
3.3 KiB
C
102 lines
3.3 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Pericom PI3USB9281 USB port switch.
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*/
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#ifndef PI3USB9281_H
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#define PI3USB9281_H
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#define PI3USB9281_REG_DEV_ID 0x01
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#define PI3USB9281_REG_CONTROL 0x02
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#define PI3USB9281_REG_INT 0x03
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#define PI3USB9281_REG_INT_MASK 0x05
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#define PI3USB9281_REG_DEV_TYPE 0x0a
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#define PI3USB9281_REG_CHG_STATUS 0x0e
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#define PI3USB9281_REG_MANUAL 0x13
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#define PI3USB9281_REG_RESET 0x1b
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#define PI3USB9281_REG_VBUS 0x1d
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#define PI3USB9281_DEV_ID 0x10
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#define PI3USB9281_DEV_ID_A 0x18
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#define PI3USB9281_CTRL_INT_DIS (1 << 0)
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#define PI3USB9281_CTRL_AUTO (1 << 2)
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#define PI3USB9281_CTRL_SWITCH_AUTO (1 << 4)
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/* Bits 5 thru 7 are read X, write 0 */
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#define PI3USB9281_CTRL_MASK 0x1f
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/* Bits 1 and 3 are read 1, write 1 */
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#define PI3USB9281_CTRL_RSVD_1 0x0a
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#define PI3USB9281_PIN_MANUAL_VBUS (3 << 0)
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#define PI3USB9281_PIN_MANUAL_DP (1 << 2)
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#define PI3USB9281_PIN_MANUAL_DM (1 << 5)
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#define PI3USB9281_INT_ATTACH (1 << 0)
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#define PI3USB9281_INT_DETACH (1 << 1)
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#define PI3USB9281_INT_OVP (1 << 5)
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#define PI3USB9281_INT_OCP (1 << 6)
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#define PI3USB9281_INT_OVP_OC (1 << 7)
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#define PI3USB9281_TYPE_NONE 0
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#define PI3USB9281_TYPE_MHL (1 << 0)
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#define PI3USB9281_TYPE_OTG (1 << 1)
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#define PI3USB9281_TYPE_SDP (1 << 2)
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#define PI3USB9281_TYPE_CAR (1 << 4)
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#define PI3USB9281_TYPE_CDP (1 << 5)
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#define PI3USB9281_TYPE_DCP (1 << 6)
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#define PI3USB9281_CHG_NONE 0
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#define PI3USB9281_CHG_CAR_TYPE1 (1 << 1)
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#define PI3USB9281_CHG_CAR_TYPE2 (3 << 0)
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#define PI3USB9281_CHG_APPLE_1A (1 << 2)
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#define PI3USB9281_CHG_APPLE_2A (1 << 3)
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#define PI3USB9281_CHG_APPLE_2_4A (1 << 4)
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/* Check if charge status has any connection */
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#define PI3USB9281_CHG_STATUS_ANY(x) (((x) & 0x1f) > 1)
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/* Read PI3USB9281 register. */
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uint8_t pi3usb9281_read(uint8_t chip_idx, uint8_t reg);
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/* Write PI3USB9281 register. */
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int pi3usb9281_write(uint8_t chip_idx, uint8_t reg, uint8_t val);
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/* Enable interrupts. */
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int pi3usb9281_enable_interrupts(uint8_t chip_idx);
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/* Disable all interrupts. */
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int pi3usb9281_disable_interrupts(uint8_t chip_idx);
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/* Set interrupt mask. */
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int pi3usb9281_set_interrupt_mask(uint8_t chip_idx, uint8_t mask);
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/* Get and clear current interrupt status. */
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int pi3usb9281_get_interrupts(uint8_t chip_idx);
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/* Get but keep interrupt status. */
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int pi3usb9281_peek_interrupts(uint8_t chip_idx);
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/* Get attached device type. */
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int pi3usb9281_get_device_type(uint8_t chip_idx);
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/* Get attached charger status. */
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int pi3usb9281_get_charger_status(uint8_t chip_idx);
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/* Get charger current limit based on device type and charger status. */
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int pi3usb9281_get_ilim(int device_type, int charger_status);
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/* Set switch configuration to manual. */
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int pi3usb9281_set_switch_manual(uint8_t chip_idx, int val);
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/* Set bits to enable pins in manual switch register. */
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int pi3usb9281_set_pins(uint8_t chip_idx, uint8_t mask);
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/* Set D+/D-/Vbus switches to open or closed/auto-control. */
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int pi3usb9281_set_switches(uint8_t chip_idx, int open);
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/* Reset PI3USB9281. */
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int pi3usb9281_reset(uint8_t chip_idx);
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#endif /* PI3USB9281_H */
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