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19920f1f74
When Toad's ID changes, VBUS goes low for 10ms. This, however, is not picked up by TSU6721 and thus we need to monitor VBUS and reset TSU6721 when necessary. By resetting TSU6721, we can force it to update device type. BUG=chrome-os-partner:18292 TEST=manual BRANCH=spring Change-Id: Ib96bbb0f101c8c5f5371591603af2dee27f01cc8 Signed-off-by: Vic Yang <victoryang@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/45727
112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/* Copyright (c) 2012 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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* TI TSU6721 USB port switch.
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*/
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#ifndef TSU6721_H
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#define TSU6721_H
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#define TSU6721_REG_DEV_ID 0x01
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#define TSU6721_REG_CONTROL 0x02
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#define TSU6721_REG_INT1 0x03
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#define TSU6721_REG_INT2 0x04
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#define TSU6721_REG_INT_MASK1 0x05
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#define TSU6721_REG_INT_MASK2 0x06
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#define TSU6721_REG_ADC 0x07
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#define TSU6721_REG_TIMING1 0x08
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#define TSU6721_REG_TIMING2 0x09
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#define TSU6721_REG_DEV_TYPE1 0x0A
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#define TSU6721_REG_DEV_TYPE2 0x0B
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#define TSU6721_REG_BUTTON1 0x0C
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#define TSU6721_REG_BUTTON2 0x0D
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#define TSU6721_REG_MANUAL1 0x13
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#define TSU6721_REG_MANUAL2 0x14
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#define TSU6721_REG_DEV_TYPE3 0x15
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#define TSU6721_REG_RESET 0x1B
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#define TSU6721_REG_TIMER 0x20
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#define TSU6721_REG_OCP1 0x21
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#define TSU6721_REG_OCP2 0x22
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#define TSU6721_CTRL_AUTO (1 << 2)
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enum tsu6721_mux {
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TSU6721_MUX_AUTO = 0x00,
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TSU6721_MUX_USB = 0x24,
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TSU6721_MUX_AUDIO = 0x48,
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TSU6721_MUX_UART = 0x6C,
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};
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#define TSU6721_INT_ATTACH 0x0001
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#define TSU6721_INT_DETACH 0x0002
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#define TSU6721_INT_KP 0x0004
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#define TSU6721_INT_LKP 0x0008
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#define TSU6721_INT_LKR 0x0010
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#define TSU6721_INT_OVP_EN 0x0020
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#define TSU6721_INT_OCP_EN 0x0040
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#define TSU6721_INT_OVP_OCP_OTP_DIS 0x0080
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#define TSU6721_INT_AV_CHANGE 0x0100
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#define TSU6721_INT_RES_ATTACH 0x0200
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#define TSU6721_INT_ADC_CHANGE 0x0400
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#define TSU6721_INT_STUCK_KEY 0x0800
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#define TSU6721_INT_STUCK_KEY_RCV 0x1000
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#define TSU6721_INT_CONNECT 0x2000
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#define TSU6721_INT_OTP_EN 0x4000
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#define TSU6721_INT_VBUS 0x8000
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#define TSU6721_TYPE_NONE 0x000000
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#define TSU6721_TYPE_OTG 0x000080
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#define TSU6721_TYPE_DCP 0x000040
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#define TSU6721_TYPE_CDP 0x000020
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#define TSU6721_TYPE_CHG12 0x000010
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#define TSU6721_TYPE_UART 0x000008
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#define TSU6721_TYPE_USB_HOST 0x000004
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#define TSU6721_TYPE_AUDIO2 0x000002
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#define TSU6721_TYPE_AUDIO1 0x000001
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#define TSU6721_TYPE_AUDIO3 0x008000
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#define TSU6721_TYPE_JIG_UART_ON 0x000400
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#define TSU6721_TYPE_U200_CHG 0x400000
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#define TSU6721_TYPE_APPLE_CHG 0x200000
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#define TSU6721_TYPE_NON_STD_CHG 0x040000
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/* VBUS_DEBOUNCED might show up together with other type */
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#define TSU6721_TYPE_VBUS_DEBOUNCED 0x020000
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/* Initialize TSU6721. */
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void tsu6721_init(void);
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/* Read TSU6721 register. */
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uint8_t tsu6721_read(uint8_t reg);
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/* Write TSU6721 register. */
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void tsu6721_write(uint8_t reg, uint8_t val);
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/* Enable interrupts. */
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void tsu6721_enable_interrupts(void);
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/* Disable all interrupts. */
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void tsu6721_disable_interrupts(void);
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/* Set interrupt mask. */
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void tsu6721_set_interrupt_mask(uint16_t mask);
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/* Get and clear current interrupt status. Return value is a combination of
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* TSU6721_INT_* */
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int tsu6721_get_interrupts(void);
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/* Get but keep interrupt status. Return value is a combination of
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* TSU6721_INT_* */
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int tsu6721_peek_interrupts(void);
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/* Get attached device type. Return value is one or a combination of
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* TSU6721_TYPE_* */
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int tsu6721_get_device_type(void);
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/* Control TSU6721 mux. */
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int tsu6721_mux(enum tsu6721_mux sel);
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/* Reset TSU6721. */
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void tsu6721_reset(void);
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#endif /* TSU6721_H */
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