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Subject[PATCH v2 03/11] mux: core: Add usb.h header with MUX_USB_* and and MUX_TYPEC_* state constants
Date
Add MUX_USB_* and MUX_TYPEC_* state constant defines, which can be used by
USB device/host, resp. Type-C polarity/role/altmode mux drivers and
consumers to ensure that they agree on the meaning of the
mux_control_select() state argument.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v2:
-Start numbering of defines at 0 not 1
-Use a new usb.h header, rather then adding these to consumer.h
-Add separate MUX_USB_* and MUX_TYPEC_* defines
---
include/linux/mux/usb.h | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 include/linux/mux/usb.h

diff --git a/include/linux/mux/usb.h b/include/linux/mux/usb.h
new file mode 100644
index 000000000000..44df5eca5256
--- /dev/null
+++ b/include/linux/mux/usb.h
@@ -0,0 +1,32 @@
+/*
+ * mux/usb.h - definitions for USB multiplexers
+ *
+ * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef _LINUX_MUX_USB_H
+#define _LINUX_MUX_USB_H
+
+/* Mux state values for USB device/host role muxes */
+#define MUX_USB_DEVICE (0) /* USB device mode */
+#define MUX_USB_HOST (1) /* USB host mode */
+#define MUX_USB_STATES (2)
+
+/*
+ * Mux state values for Type-C polarity/role/altmode muxes.
+ *
+ * MUX_TYPEC_POLARITY_INV may be or-ed together with any other mux-state as
+ * inverted-polarity (Type-C plugged in upside down) can happen with any
+ * other mux-state.
+ */
+#define MUX_TYPEC_POLARITY_INV BIT(0) /* Polarity inverted bit */
+#define MUX_TYPEC_DEVICE (0 << 1) /* USB device mode */
+#define MUX_TYPEC_HOST (1 << 1) /* USB host mode */
+#define MUX_TYPEC_HOST_AND_DP_SRC (2 << 1) /* USB host + 2 lanes DP src */
+#define MUX_TYPEC_DP_SRC (3 << 1) /* 4 lanes Display Port src */
+#define MUX_TYPEC_STATES (4 << 1)
+
+#endif /* _LINUX_MUX_TYPEC_H */
--
2.13.5
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