USB: XHCI: Add xHCI host controller support for Exynos5

This adds driver layer for xHCI controller in Samsung's
exynos5 soc. This interacts with xHCI host controller stack.

Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Julius Werner <jwerner@chromium.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Vasut <marex@denx.de>

1 files changed, 188 insertions, 0 deletions

diff --git a/include/linux/usb/dwc3.h b/include/linux/usb/dwc3.h
new file mode 100644
index 000000000..97d179a6e
--- /dev/null
+++ b/include/linux/usb/dwc3.h
@@ -0,0 +1,188 @@
+/* include/linux/usb/dwc3.h
+ *
+ * Copyright (c) 2012 Samsung Electronics Co. Ltd
+ *
+ * Designware SuperSpeed USB 3.0 DRD Controller global and OTG registers
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __DWC3_H_
+#define __DWC3_H_
+
+/* Global constants */
+#define DWC3_ENDPOINTS_NUM			32
+
+#define DWC3_EVENT_BUFFERS_SIZE			PAGE_SIZE
+#define DWC3_EVENT_TYPE_MASK			0xfe
+
+#define DWC3_EVENT_TYPE_DEV			0
+#define DWC3_EVENT_TYPE_CARKIT			3
+#define DWC3_EVENT_TYPE_I2C			4
+
+#define DWC3_DEVICE_EVENT_DISCONNECT		0
+#define DWC3_DEVICE_EVENT_RESET			1
+#define DWC3_DEVICE_EVENT_CONNECT_DONE		2
+#define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE	3
+#define DWC3_DEVICE_EVENT_WAKEUP		4
+#define DWC3_DEVICE_EVENT_EOPF			6
+#define DWC3_DEVICE_EVENT_SOF			7
+#define DWC3_DEVICE_EVENT_ERRATIC_ERROR		9
+#define DWC3_DEVICE_EVENT_CMD_CMPL		10
+#define DWC3_DEVICE_EVENT_OVERFLOW		11
+
+#define DWC3_GEVNTCOUNT_MASK			0xfffc
+#define DWC3_GSNPSID_MASK			0xffff0000
+#define DWC3_GSNPSID_SHIFT			16
+#define DWC3_GSNPSREV_MASK			0xffff
+
+#define DWC3_REVISION_MASK			0xffff
+
+#define DWC3_REG_OFFSET				0xC100
+
+struct g_event_buffer {
+	u64 g_evntadr;
+	u32 g_evntsiz;
+	u32 g_evntcount;
+};
+
+struct d_physical_endpoint {
+	u32 d_depcmdpar2;
+	u32 d_depcmdpar1;
+	u32 d_depcmdpar0;
+	u32 d_depcmd;
+};
+
+struct dwc3 {					/* offset: 0xC100 */
+	u32 g_sbuscfg0;
+	u32 g_sbuscfg1;
+	u32 g_txthrcfg;
+	u32 g_rxthrcfg;
+	u32 g_ctl;
+
+	u32 reserved1;
+
+	u32 g_sts;
+
+	u32 reserved2;
+
+	u32 g_snpsid;
+	u32 g_gpio;
+	u32 g_uid;
+	u32 g_uctl;
+	u64 g_buserraddr;
+	u64 g_prtbimap;
+
+	u32 g_hwparams0;
+	u32 g_hwparams1;
+	u32 g_hwparams2;
+	u32 g_hwparams3;
+	u32 g_hwparams4;
+	u32 g_hwparams5;
+	u32 g_hwparams6;
+	u32 g_hwparams7;
+
+	u32 g_dbgfifospace;
+	u32 g_dbgltssm;
+	u32 g_dbglnmcc;
+	u32 g_dbgbmu;
+	u32 g_dbglspmux;
+	u32 g_dbglsp;
+	u32 g_dbgepinfo0;
+	u32 g_dbgepinfo1;
+
+	u64 g_prtbimap_hs;
+	u64 g_prtbimap_fs;
+
+	u32 reserved3[28];
+
+	u32 g_usb2phycfg[16];
+	u32 g_usb2i2cctl[16];
+	u32 g_usb2phyacc[16];
+	u32 g_usb3pipectl[16];
+
+	u32 g_txfifosiz[32];
+	u32 g_rxfifosiz[32];
+
+	struct g_event_buffer g_evnt_buf[32];
+
+	u32 g_hwparams8;
+
+	u32 reserved4[63];
+
+	u32 d_cfg;
+	u32 d_ctl;
+	u32 d_evten;
+	u32 d_sts;
+	u32 d_gcmdpar;
+	u32 d_gcmd;
+
+	u32 reserved5[2];
+
+	u32 d_alepena;
+
+	u32 reserved6[55];
+
+	struct d_physical_endpoint d_phy_ep_cmd[32];
+
+	u32 reserved7[128];
+
+	u32 o_cfg;
+	u32 o_ctl;
+	u32 o_evt;
+	u32 o_evten;
+	u32 o_sts;
+
+	u32 reserved8[3];
+
+	u32 adp_cfg;
+	u32 adp_ctl;
+	u32 adp_evt;
+	u32 adp_evten;
+
+	u32 bc_cfg;
+
+	u32 reserved9;
+
+	u32 bc_evt;
+	u32 bc_evten;
+};
+
+/* Global Configuration Register */
+#define DWC3_GCTL_PWRDNSCALE(n)			((n) << 19)
+#define DWC3_GCTL_U2RSTECN			(1 << 16)
+#define DWC3_GCTL_RAMCLKSEL(x)			\
+		(((x) & DWC3_GCTL_CLK_MASK) << 6)
+#define DWC3_GCTL_CLK_BUS			(0)
+#define DWC3_GCTL_CLK_PIPE			(1)
+#define DWC3_GCTL_CLK_PIPEHALF			(2)
+#define DWC3_GCTL_CLK_MASK			(3)
+#define DWC3_GCTL_PRTCAP(n)			(((n) & (3 << 12)) >> 12)
+#define DWC3_GCTL_PRTCAPDIR(n)			((n) << 12)
+#define DWC3_GCTL_PRTCAP_HOST			1
+#define DWC3_GCTL_PRTCAP_DEVICE			2
+#define DWC3_GCTL_PRTCAP_OTG			3
+#define DWC3_GCTL_CORESOFTRESET			(1 << 11)
+#define DWC3_GCTL_SCALEDOWN(n)			((n) << 4)
+#define DWC3_GCTL_SCALEDOWN_MASK		DWC3_GCTL_SCALEDOWN(3)
+#define DWC3_GCTL_DISSCRAMBLE			(1 << 3)
+#define DWC3_GCTL_DSBLCLKGTNG			(1 << 0)
+
+/* Global HWPARAMS1 Register */
+#define DWC3_GHWPARAMS1_EN_PWROPT(n)		(((n) & (3 << 24)) >> 24)
+#define DWC3_GHWPARAMS1_EN_PWROPT_NO		0
+#define DWC3_GHWPARAMS1_EN_PWROPT_CLK		1
+
+/* Global USB2 PHY Configuration Register */
+#define DWC3_GUSB2PHYCFG_PHYSOFTRST		(1 << 31)
+#define DWC3_GUSB2PHYCFG_SUSPHY			(1 << 6)
+
+/* Global USB3 PIPE Control Register */
+#define DWC3_GUSB3PIPECTL_PHYSOFTRST		(1 << 31)
+#define DWC3_GUSB3PIPECTL_SUSPHY		(1 << 17)
+
+/* Global TX Fifo Size Register */
+#define DWC3_GTXFIFOSIZ_TXFDEF(n)		((n) & 0xffff)
+#define DWC3_GTXFIFOSIZ_TXFSTADDR(n)		((n) & 0xffff0000)
+
+#endif /* __DWC3_H_ */