forked from mirrors/linux
b91e610711
Add support for USB3803 and bypass mode, with this change is also possible to move the component out of bypass mode. In bypass mode the downstream port 3 is connected to the upstream port with low switch resistance R_on. Controlling mode of operations: | RESET_N | BYPASS_N | Mode | -------------------------------- | 0 | 0 | standby | | 1 | 0 | bypass | | 1 | 1 | hub | Datasheet: https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/DataSheets/00001691D.pdf Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Link: https://lore.kernel.org/r/20230313165039.255579-4-francesco@dolcini.it Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
23 lines
431 B
C
23 lines
431 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __USB3503_H__
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#define __USB3503_H__
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#define USB3503_I2C_NAME "usb3503"
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#define USB3503_OFF_PORT1 (1 << 1)
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#define USB3503_OFF_PORT2 (1 << 2)
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#define USB3503_OFF_PORT3 (1 << 3)
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enum usb3503_mode {
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USB3503_MODE_UNKNOWN,
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USB3503_MODE_HUB,
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USB3503_MODE_STANDBY,
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USB3503_MODE_BYPASS,
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};
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struct usb3503_platform_data {
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enum usb3503_mode initial_mode;
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u8 port_off_mask;
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};
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#endif
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