Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/usb/cdns3/drd.h b/drivers/usb/cdns3/drd.h
new file mode 100644
index 0000000..04e01c4
--- /dev/null
+++ b/drivers/usb/cdns3/drd.h
@@ -0,0 +1,167 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Cadence USB3 DRD header file.
+ *
+ * Copyright (C) 2018-2019 Cadence.
+ *
+ * Author: Pawel Laszczak <pawell@cadence.com>
+ */
+#ifndef __LINUX_CDNS3_DRD
+#define __LINUX_CDNS3_DRD
+
+#include <linux/usb/otg.h>
+#include <linux/phy/phy.h>
+#include "core.h"
+
+/* DRD register interface for version v1. */
+struct cdns3_otg_regs {
+ __le32 did;
+ __le32 rid;
+ __le32 capabilities;
+ __le32 reserved1;
+ __le32 cmd;
+ __le32 sts;
+ __le32 state;
+ __le32 reserved2;
+ __le32 ien;
+ __le32 ivect;
+ __le32 refclk;
+ __le32 tmr;
+ __le32 reserved3[4];
+ __le32 simulate;
+ __le32 override;
+ __le32 susp_ctrl;
+ __le32 reserved4;
+ __le32 anasts;
+ __le32 adp_ramp_time;
+ __le32 ctrl1;
+ __le32 ctrl2;
+};
+
+/* DRD register interface for version v0. */
+struct cdns3_otg_legacy_regs {
+ __le32 cmd;
+ __le32 sts;
+ __le32 state;
+ __le32 refclk;
+ __le32 ien;
+ __le32 ivect;
+ __le32 reserved1[3];
+ __le32 tmr;
+ __le32 reserved2[2];
+ __le32 version;
+ __le32 capabilities;
+ __le32 reserved3[2];
+ __le32 simulate;
+ __le32 reserved4[5];
+ __le32 ctrl1;
+};
+
+/*
+ * Common registers interface for both version of DRD.
+ */
+struct cdns3_otg_common_regs {
+ __le32 cmd;
+ __le32 sts;
+ __le32 state;
+ __le32 different1;
+ __le32 ien;
+ __le32 ivect;
+};
+
+/* CDNS_RID - bitmasks */
+#define CDNS_RID(p) ((p) & GENMASK(15, 0))
+
+/* CDNS_VID - bitmasks */
+#define CDNS_DID(p) ((p) & GENMASK(31, 0))
+
+/* OTGCMD - bitmasks */
+/* "Request the bus for Device mode. */
+#define OTGCMD_DEV_BUS_REQ BIT(0)
+/* Request the bus for Host mode */
+#define OTGCMD_HOST_BUS_REQ BIT(1)
+/* Enable OTG mode. */
+#define OTGCMD_OTG_EN BIT(2)
+/* Disable OTG mode */
+#define OTGCMD_OTG_DIS BIT(3)
+/*"Configure OTG as A-Device. */
+#define OTGCMD_A_DEV_EN BIT(4)
+/*"Configure OTG as A-Device. */
+#define OTGCMD_A_DEV_DIS BIT(5)
+/* Drop the bus for Device mod e. */
+#define OTGCMD_DEV_BUS_DROP BIT(8)
+/* Drop the bus for Host mode*/
+#define OTGCMD_HOST_BUS_DROP BIT(9)
+/* Power Down USBSS-DEV. */
+#define OTGCMD_DEV_POWER_OFF BIT(11)
+/* Power Down CDNSXHCI. */
+#define OTGCMD_HOST_POWER_OFF BIT(12)
+
+/* OTGIEN - bitmasks */
+/* ID change interrupt enable */
+#define OTGIEN_ID_CHANGE_INT BIT(0)
+/* Vbusvalid fall detected interrupt enable.*/
+#define OTGIEN_VBUSVALID_RISE_INT BIT(4)
+/* Vbusvalid fall detected interrupt enable */
+#define OTGIEN_VBUSVALID_FALL_INT BIT(5)
+
+/* OTGSTS - bitmasks */
+/*
+ * Current value of the ID pin. It is only valid when idpullup in
+ * OTGCTRL1_TYPE register is set to '1'.
+ */
+#define OTGSTS_ID_VALUE BIT(0)
+/* Current value of the vbus_valid */
+#define OTGSTS_VBUS_VALID BIT(1)
+/* Current value of the b_sess_vld */
+#define OTGSTS_SESSION_VALID BIT(2)
+/*Device mode is active*/
+#define OTGSTS_DEV_ACTIVE BIT(3)
+/* Host mode is active. */
+#define OTGSTS_HOST_ACTIVE BIT(4)
+/* OTG Controller not ready. */
+#define OTGSTS_OTG_NRDY_MASK BIT(11)
+#define OTGSTS_OTG_NRDY(p) ((p) & OTGSTS_OTG_NRDY_MASK)
+/*
+ * Value of the strap pins.
+ * 000 - no default configuration
+ * 010 - Controller initiall configured as Host
+ * 100 - Controller initially configured as Device
+ */
+#define OTGSTS_STRAP(p) (((p) & GENMASK(14, 12)) >> 12)
+#define OTGSTS_STRAP_NO_DEFAULT_CFG 0x00
+#define OTGSTS_STRAP_HOST_OTG 0x01
+#define OTGSTS_STRAP_HOST 0x02
+#define OTGSTS_STRAP_GADGET 0x04
+/* Host mode is turned on. */
+#define OTGSTS_XHCI_READY BIT(26)
+/* "Device mode is turned on .*/
+#define OTGSTS_DEV_READY BIT(27)
+
+/* OTGSTATE- bitmasks */
+#define OTGSTATE_DEV_STATE_MASK GENMASK(2, 0)
+#define OTGSTATE_HOST_STATE_MASK GENMASK(5, 3)
+#define OTGSTATE_HOST_STATE_IDLE 0x0
+#define OTGSTATE_HOST_STATE_VBUS_FALL 0x7
+#define OTGSTATE_HOST_STATE(p) (((p) & OTGSTATE_HOST_STATE_MASK) >> 3)
+
+/* OTGREFCLK - bitmasks */
+#define OTGREFCLK_STB_CLK_SWITCH_EN BIT(31)
+
+/* OVERRIDE - bitmasks */
+#define OVERRIDE_IDPULLUP BIT(0)
+/* Only for CDNS3_CONTROLLER_V0 version */
+#define OVERRIDE_IDPULLUP_V0 BIT(24)
+
+int cdns3_is_host(struct cdns3 *cdns);
+int cdns3_is_device(struct cdns3 *cdns);
+int cdns3_get_id(struct cdns3 *cdns);
+int cdns3_get_vbus(struct cdns3 *cdns);
+int cdns3_drd_init(struct cdns3 *cdns);
+int cdns3_drd_exit(struct cdns3 *cdns);
+int cdns3_drd_update_mode(struct cdns3 *cdns);
+int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on);
+int cdns3_drd_switch_host(struct cdns3 *cdns, int on);
+int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode);
+
+#endif /* __LINUX_CDNS3_DRD */