1 files changed, 150 insertions, 0 deletions
diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h
new file mode 100644
index 000000000..fc6c77918
--- /dev/null
+++ b/include/linux/usb/musb.h
@@ -0,0 +1,150 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This is used to for host and peripheral modes of the driver for
+ * Inventra (Multidrop) Highspeed Dual-Role Controllers:  (M)HDRC.
+ *
+ * Board initialization should put one of these into dev->platform_data,
+ * probably on some platform_device named "musb-hdrc".  It encapsulates
+ * key configuration differences between boards.
+ */
+
+#ifndef __LINUX_USB_MUSB_H
+#define __LINUX_USB_MUSB_H
+
+/* The USB role is defined by the connector used on the board, so long as
+ * standards are being followed.  (Developer boards sometimes won't.)
+ */
+enum musb_mode {
+	MUSB_UNDEFINED = 0,
+	MUSB_HOST,		/* A or Mini-A connector */
+	MUSB_PERIPHERAL,	/* B or Mini-B connector */
+	MUSB_OTG		/* Mini-AB connector */
+};
+
+struct clk;
+
+enum musb_fifo_style {
+	FIFO_RXTX,
+	FIFO_TX,
+	FIFO_RX
+} __attribute__ ((packed));
+
+enum musb_buf_mode {
+	BUF_SINGLE,
+	BUF_DOUBLE
+} __attribute__ ((packed));
+
+struct musb_fifo_cfg {
+	u8			hw_ep_num;
+	enum musb_fifo_style	style;
+	enum musb_buf_mode	mode;
+	u16			maxpacket;
+};
+
+#define MUSB_EP_FIFO(ep, st, m, pkt)		\
+{						\
+	.hw_ep_num	= ep,			\
+	.style		= st,			\
+	.mode		= m,			\
+	.maxpacket	= pkt,			\
+}
+
+#define MUSB_EP_FIFO_SINGLE(ep, st, pkt)	\
+	MUSB_EP_FIFO(ep, st, BUF_SINGLE, pkt)
+
+#define MUSB_EP_FIFO_DOUBLE(ep, st, pkt)	\
+	MUSB_EP_FIFO(ep, st, BUF_DOUBLE, pkt)
+
+struct musb_hdrc_eps_bits {
+	const char	name[16];
+	u8		bits;
+};
+
+struct musb_hdrc_config {
+	struct musb_fifo_cfg	*fifo_cfg;	/* board fifo configuration */
+	unsigned		fifo_cfg_size;	/* size of the fifo configuration */
+
+	/* MUSB configuration-specific details */
+	unsigned	multipoint:1;	/* multipoint device */
+	unsigned	dyn_fifo:1 __deprecated; /* supports dynamic fifo sizing */
+
+	/* need to explicitly de-assert the port reset after resume? */
+	unsigned	host_port_deassert_reset_at_resume:1;
+
+	u8		num_eps;	/* number of endpoints _with_ ep0 */
+	u8		ram_bits;	/* ram address size */
+
+	u32		maximum_speed;
+};
+
+struct musb_hdrc_platform_data {
+	/* MUSB_HOST, MUSB_PERIPHERAL, or MUSB_OTG */
+	u8		mode;
+
+	/* for clk_get() */
+	const char	*clock;
+
+	/* (HOST or OTG) switch VBUS on/off */
+	int		(*set_vbus)(struct device *dev, int is_on);
+
+	/* (HOST or OTG) mA/2 power supplied on (default = 8mA) */
+	u8		power;
+
+	/* (PERIPHERAL) mA/2 max power consumed (default = 100mA) */
+	u8		min_power;
+
+	/* (HOST or OTG) msec/2 after VBUS on till power good */
+	u8		potpgt;
+
+	/* (HOST or OTG) program PHY for external Vbus */
+	unsigned	extvbus:1;
+
+	/* Power the device on or off */
+	int		(*set_power)(int state);
+
+	/* MUSB configuration-specific details */
+	const struct musb_hdrc_config *config;
+
+	/* Architecture specific board data	*/
+	void		*board_data;
+
+	/* Platform specific struct musb_ops pointer */
+	const void	*platform_ops;
+};
+
+enum musb_vbus_id_status {
+	MUSB_UNKNOWN = 0,
+	MUSB_ID_GROUND,
+	MUSB_ID_FLOAT,
+	MUSB_VBUS_VALID,
+	MUSB_VBUS_OFF,
+};
+
+#if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
+int musb_mailbox(enum musb_vbus_id_status status);
+#else
+static inline int musb_mailbox(enum musb_vbus_id_status status)
+{
+	return 0;
+}
+#endif
+
+/* TUSB 6010 support */
+
+#define	TUSB6010_OSCCLK_60	16667	/* psec/clk @ 60.0 MHz */
+#define	TUSB6010_REFCLK_24	41667	/* psec/clk @ 24.0 MHz XI */
+#define	TUSB6010_REFCLK_19	52083	/* psec/clk @ 19.2 MHz CLKIN */
+
+#ifdef	CONFIG_ARCH_OMAP2
+
+extern int __init tusb6010_setup_interface(
+		struct musb_hdrc_platform_data *data,
+		unsigned ps_refclk, unsigned waitpin,
+		unsigned async_cs, unsigned sync_cs,
+		unsigned irq, unsigned dmachan);
+
+extern int tusb6010_platform_retime(unsigned is_refclk);
+
+#endif	/* OMAP2 */
+
+#endif /* __LINUX_USB_MUSB_H */