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/* Copyright (c) 2014 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.
*
* Pericom PI3USB9281 USB port switch.
*/
#ifndef __CROS_EC_PI3USB9281_H
#define __CROS_EC_PI3USB9281_H
#define PI3USB9281_REG_DEV_ID 0x01
#define PI3USB9281_REG_CONTROL 0x02
#define PI3USB9281_REG_INT 0x03
#define PI3USB9281_REG_INT_MASK 0x05
#define PI3USB9281_REG_DEV_TYPE 0x0a
#define PI3USB9281_REG_CHG_STATUS 0x0e
#define PI3USB9281_REG_MANUAL 0x13
#define PI3USB9281_REG_RESET 0x1b
#define PI3USB9281_REG_VBUS 0x1d
#define PI3USB9281_DEV_ID 0x10
#define PI3USB9281_DEV_ID_A 0x18
#define PI3USB9281_CTRL_INT_DIS (1 << 0)
#define PI3USB9281_CTRL_AUTO (1 << 2)
#define PI3USB9281_CTRL_SWITCH_AUTO (1 << 4)
/* Bits 5 thru 7 are read X, write 0 */
#define PI3USB9281_CTRL_MASK 0x1f
/* Bits 1 and 3 are read 1, write 1 */
#define PI3USB9281_CTRL_RSVD_1 0x0a
#define PI3USB9281_PIN_MANUAL_VBUS (3 << 0)
#define PI3USB9281_PIN_MANUAL_DP (1 << 2)
#define PI3USB9281_PIN_MANUAL_DM (1 << 5)
#define PI3USB9281_INT_ATTACH (1 << 0)
#define PI3USB9281_INT_DETACH (1 << 1)
#define PI3USB9281_INT_OVP (1 << 5)
#define PI3USB9281_INT_OCP (1 << 6)
#define PI3USB9281_INT_OVP_OC (1 << 7)
#define PI3USB9281_TYPE_NONE 0
#define PI3USB9281_TYPE_MHL (1 << 0)
#define PI3USB9281_TYPE_OTG (1 << 1)
#define PI3USB9281_TYPE_SDP (1 << 2)
#define PI3USB9281_TYPE_CAR (1 << 4)
#define PI3USB9281_TYPE_CDP (1 << 5)
#define PI3USB9281_TYPE_DCP (1 << 6)
#define PI3USB9281_CHG_NONE 0
#define PI3USB9281_CHG_CAR_TYPE1 (1 << 1)
#define PI3USB9281_CHG_CAR_TYPE2 (3 << 0)
#define PI3USB9281_CHG_APPLE_1A (1 << 2)
#define PI3USB9281_CHG_APPLE_2A (1 << 3)
#define PI3USB9281_CHG_APPLE_2_4A (1 << 4)
/* Check if charge status has any connection */
#define PI3USB9281_CHG_STATUS_ANY(x) (((x) & 0x1f) > 1)
/* Define configuration of one pi3usb9281 part */
struct pi3usb9281_config {
/* i2c port that chip resides on */
int i2c_port;
/* GPIO for chip selection in muxed configuration */
enum gpio_signal mux_gpio;
/* Logic level of mux_gpio to select chip */
int mux_gpio_level;
/* Mutex to lock access to mux gpio or NULL if no mux exists */
struct mutex *mux_lock;
};
/* Configuration struct defined at board level */
extern struct pi3usb9281_config pi3usb9281_chips[];
/* TODO: Make many of these functions static after Oak board changes. */
/* Initialize chip and enable interrupts */
void pi3usb9281_init(int port);
/* Enable interrupts. */
int pi3usb9281_enable_interrupts(int port);
/* Disable all interrupts. */
int pi3usb9281_disable_interrupts(int port);
/* Get and clear current interrupt status. */
int pi3usb9281_get_interrupts(int port);
/* Get attached device type. */
int pi3usb9281_get_device_type(int port);
/* Get attached charger status. */
int pi3usb9281_get_charger_status(int port);
#endif /* __CROS_EC_PI3USB9281_H */
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