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a4ef740391
Previously usb_charger.c supported only pi3usb9281, but now support for additional parts is required. Move pericom-specific code (including the usb_charger tasks that handles various quirks of that part) to the pi3usb9281 usb_switch driver. Going forward, usb_switch drivers must implement usb_charger_set_switches() and must have some method (such as a task or interrupt handler) to update charge_manager with information about attached chargers. BUG=chrome-os-partner:53363 BRANCH=None TEST=`make buildall -j` Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Change-Id: I4df74e043d8cf2e532d48c39c73b7dc2930f7d3b Reviewed-on: https://chromium-review.googlesource.com/344289 Commit-Ready: Shawn N <shawnn@chromium.org> Tested-by: Shawn N <shawnn@chromium.org> Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
94 lines
3.0 KiB
C
94 lines
3.0 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 __CROS_EC_PI3USB9281_H
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#define __CROS_EC_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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/* Define configuration of one pi3usb9281 part */
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struct pi3usb9281_config {
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/* i2c port that chip resides on */
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int i2c_port;
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/* GPIO for chip selection in muxed configuration */
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enum gpio_signal mux_gpio;
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/* Logic level of mux_gpio to select chip */
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int mux_gpio_level;
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/* Mutex to lock access to mux gpio or NULL if no mux exists */
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struct mutex *mux_lock;
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};
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/* Configuration struct defined at board level */
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extern struct pi3usb9281_config pi3usb9281_chips[];
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/* TODO: Make many of these functions static after Oak board changes. */
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/* Initialize chip and enable interrupts */
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void pi3usb9281_init(int port);
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/* Enable interrupts. */
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int pi3usb9281_enable_interrupts(int port);
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/* Disable all interrupts. */
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int pi3usb9281_disable_interrupts(int port);
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/* Get and clear current interrupt status. */
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int pi3usb9281_get_interrupts(int port);
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/* Get attached device type. */
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int pi3usb9281_get_device_type(int port);
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/* Get attached charger status. */
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int pi3usb9281_get_charger_status(int port);
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#endif /* __CROS_EC_PI3USB9281_H */
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