tegra: Clean up USB code

Pull out the common usb setup utmip functions from t124 into tegra usb.h. These
can be reused for t132 as well.

BUG=chrome-os-partner:31293
BRANCH=None
TEST=Compiles successfully for nyan, big and blaze

Change-Id: Idddd40e409b56875436db6918d05f2889d83870b
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 12f12cb30a033cce645f53457d13a987aeec22a1
Original-Change-Id: I83f83bafad0f52ad651fe5989430f41142803f2b
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/211200
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/8927
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

2 files changed, 128 insertions, 119 deletions

diff --git a/src/soc/nvidia/tegra/usb.c b/src/soc/nvidia/tegra/usb.c
index e0455ed05c18..3268ee1a7436 100644
--- a/src/soc/nvidia/tegra/usb.c
+++ b/src/soc/nvidia/tegra/usb.c
@@ -24,9 +24,131 @@
 
 #include "usb.h"
 
+struct utmip_ctlr {
+	u32 pll0;
+	u32 pll1;
+	u32 xcvr0;
+	u32 bias0;
+	u32 hsrx0;
+	u32 hsrx1;
+	u32 fslsrx0;
+	u32 fslsrx1;
+	u32 tx;
+	u32 misc0;
+	u32 misc1;
+	u32 debounce;
+	u32 batchrgr;
+	u32 spare;
+	u32 xcvr1;
+	u32 bias1;
+	u32 bias_sts;
+	u32 chrgr_debounce;
+	u32 misc_sts;
+	u32 pmc_wakeup;
+};
+check_member(utmip_ctlr, pmc_wakeup, 0x84c - 0x800);
+
+struct usb_ctlr {
+	u32 id;
+	u32 _rsv0;
+	u32 host;
+	u32 device;
+	u32 txbuf;			/* 0x010 */
+	u32 rxbuf;
+	u32 _rsv1[58];
+	u16 ehci_caplen;		/* 0x100 */
+	u16 ehci_version;
+	u32 ehci_hcsp;
+	u32 ehci_hccp;
+	u32 _rsv2[5];
+	u32 dci_version;		/* 0x120 */
+	u32 dcc_params;
+	u32 extsts;
+	u32 extintr;
+	u32 ehci_usbcmd;		/* 0x130 */
+	u32 ehci_usbsts;
+	u32 ehci_usbintr;
+	u32 ehci_frindex;
+	u32 _rsv3;			/* 0x140 */
+	u32 ehci_periodic_base;
+	u32 ehci_async_base;
+	u32 async_ttsts;
+	u32 burst_size;			/* 0x150 */
+	u32 tx_fill_tuning;
+	u32 _rsv4;
+	u32 icusb_ctrl;
+	u32 ulpi_viewport;		/* 0x160 */
+	u32 _rsv5[4];
+	u32 ehci_portsc;
+	u32 _rsv6[15];
+	u32 lpm_ctrl;
+	u32 _rsv7[15];
+	u32 otgsc;
+	u32 usb_mode;
+	u32 _rsv8;
+	u32 ep_nak;			/* 0x200 */
+	u32 ep_nak_enable;
+	u32 ep_setup;
+	u32 ep_init;
+	u32 ep_deinit;
+	u32 ep_sts;
+	u32 ep_complete;
+	u32 ep_ctrl[16];
+	u32 _rsv9[105];
+	u32 suspend_ctrl;		/* 0x400 */
+	u32 vbus_sensors;
+	u32 vbus_wakeup_id;
+	u32 alt_vbus_sts;
+	u32 legacy_ctrl;
+	u32 _rsv10[3];
+	u32 interpacket_delay;
+	u32 _rsv11[27];
+	u32 resume_delay;
+	u32 _rsv12;
+	u32 spare;
+	u32 _rsv13[9];
+	u32 new_ctrl;
+	u32 _rsv14[207];
+	struct utmip_ctlr utmip;	/* 0x800 */
+};
+check_member(usb_ctlr, utmip, 0x800);
+
+/*
+ * Tegra EHCI controllers need their usb_mode, lpm_ctrl and tx_fill_tuning
+ * registers initialized after every EHCI reset and before any other actions
+ * (such as Run/Stop bit) are taken. We reset the controller here, set those
+ * registers and rely on the fact that libpayload doesn't reset EHCI controllers
+ * on initialization for whatever weird reason. This is ugly, fragile, and I
+ * really don't like it, but making this work will require an ugly hack one way
+ * or another so we might as well take the path of least resistance for now.
+ */
+static void usb_ehci_reset_and_prepare(struct usb_ctlr *usb, enum usb_phy_type type)
+{
+	int timeout = 1000;
+
+	write32(1 << 1, &usb->ehci_usbcmd);	/* Host Controller Reset */
+	/* TODO: Resets are long, find way to parallelize... or just use XHCI */
+	while (--timeout && (read32(&usb->ehci_usbcmd) & 1 << 1))
+		/* wait for HC to reset */;
+
+	if (!timeout) {
+		printk(BIOS_ERR, "ERROR: EHCI(%p) reset timeout", usb);
+		return;
+	}
+
+	/* Controller mode: HOST */
+	write32(3 << 0, &usb->usb_mode);
+	/* Parallel transceiver selct */
+	write32(type << 29, &usb->lpm_ctrl);
+	/* Tx FIFO Burst thresh */
+	write32(0x10 << 16, &usb->tx_fill_tuning);
+}
+
 /* Assume USBx clocked, out of reset, UTMI+ PLL set up, SAMP_x out of pwrdn */
-void usb_setup_utmip(struct usb_ctlr *usb)
+void usb_setup_utmip(void *usb_base)
 {
+	struct usb_ctlr *usb = (struct usb_ctlr *)usb_base;
+
 	/* KHz formulas were guessed from U-Boot constants. Formats unclear. */
 	int khz = clock_get_pll_input_khz();
 
@@ -90,32 +212,8 @@ void usb_setup_utmip(struct usb_ctlr *usb)
 	write32(1 << 12 |		/* UTMI+ enable */
 		0 << 11 |		/* UTMI+ reset */
 		0, &usb->suspend_ctrl);
-}
 
-/*
- * Tegra EHCI controllers need their usb_mode, lpm_ctrl and tx_fill_tuning
- * registers initialized after every EHCI reset and before any other actions
- * (such as Run/Stop bit) are taken. We reset the controller here, set those
- * registers and rely on the fact that libpayload doesn't reset EHCI controllers
- * on initialization for whatever weird reason. This is ugly, fragile, and I
- * really don't like it, but making this work will require an ugly hack one way
- * or another so we might as well take the path of least resistance for now.
- */
-void usb_ehci_reset_and_prepare(struct usb_ctlr *usb, enum usb_phy_type type)
-{
-	int timeout = 1000;
-
-	write32(1 << 1, &usb->ehci_usbcmd);	/* Host Controller Reset */
-	/* TODO: Resets are long, find way to parallelize... or just use XHCI */
-	while (--timeout && (read32(&usb->ehci_usbcmd) & 1 << 1))
-		/* wait for HC to reset */;
-
-	if (!timeout) {
-		printk(BIOS_ERR, "ERROR: EHCI(%p) reset timeout", usb);
-		return;
-	}
-
-	write32(3 << 0, &usb->usb_mode);	/* Controller mode: HOST */
-	write32(type << 29, &usb->lpm_ctrl);	/* Parallel transceiver selct */
-	write32(0x10 << 16, &usb->tx_fill_tuning);  /* Tx FIFO Burst thresh */
+	usb_ehci_reset_and_prepare(usb, USB_PHY_UTMIP);
+	printk(BIOS_DEBUG, "USB controller @ %p set up with UTMI+ PHY\n",usb_base);
 }
+
diff --git a/src/soc/nvidia/tegra/usb.h b/src/soc/nvidia/tegra/usb.h
index f720c2aab329..9d22b0b8678a 100644
--- a/src/soc/nvidia/tegra/usb.h
+++ b/src/soc/nvidia/tegra/usb.h
@@ -22,95 +22,6 @@
 
 #include <stdint.h>
 
-struct utmip_ctlr {
-	u32 pll0;
-	u32 pll1;
-	u32 xcvr0;
-	u32 bias0;
-	u32 hsrx0;
-	u32 hsrx1;
-	u32 fslsrx0;
-	u32 fslsrx1;
-	u32 tx;
-	u32 misc0;
-	u32 misc1;
-	u32 debounce;
-	u32 batchrgr;
-	u32 spare;
-	u32 xcvr1;
-	u32 bias1;
-	u32 bias_sts;
-	u32 chrgr_debounce;
-	u32 misc_sts;
-	u32 pmc_wakeup;
-};
-check_member(utmip_ctlr, pmc_wakeup, 0x84c - 0x800);
-
-struct usb_ctlr {
-	u32 id;
-	u32 _rsv0;
-	u32 host;
-	u32 device;
-	u32 txbuf;			/* 0x010 */
-	u32 rxbuf;
-	u32 _rsv1[58];
-	u16 ehci_caplen;		/* 0x100 */
-	u16 ehci_version;
-	u32 ehci_hcsp;
-	u32 ehci_hccp;
-	u32 _rsv2[5];
-	u32 dci_version;		/* 0x120 */
-	u32 dcc_params;
-	u32 extsts;
-	u32 extintr;
-	u32 ehci_usbcmd;		/* 0x130 */
-	u32 ehci_usbsts;
-	u32 ehci_usbintr;
-	u32 ehci_frindex;
-	u32 _rsv3;			/* 0x140 */
-	u32 ehci_periodic_base;
-	u32 ehci_async_base;
-	u32 async_ttsts;
-	u32 burst_size;			/* 0x150 */
-	u32 tx_fill_tuning;
-	u32 _rsv4;
-	u32 icusb_ctrl;
-	u32 ulpi_viewport;		/* 0x160 */
-	u32 _rsv5[4];
-	u32 ehci_portsc;
-	u32 _rsv6[15];
-	u32 lpm_ctrl;
-	u32 _rsv7[15];
-	u32 otgsc;
-	u32 usb_mode;
-	u32 _rsv8;
-	u32 ep_nak;			/* 0x200 */
-	u32 ep_nak_enable;
-	u32 ep_setup;
-	u32 ep_init;
-	u32 ep_deinit;
-	u32 ep_sts;
-	u32 ep_complete;
-	u32 ep_ctrl[16];
-	u32 _rsv9[105];
-	u32 suspend_ctrl;		/* 0x400 */
-	u32 vbus_sensors;
-	u32 vbus_wakeup_id;
-	u32 alt_vbus_sts;
-	u32 legacy_ctrl;
-	u32 _rsv10[3];
-	u32 interpacket_delay;
-	u32 _rsv11[27];
-	u32 resume_delay;
-	u32 _rsv12;
-	u32 spare;
-	u32 _rsv13[9];
-	u32 new_ctrl;
-	u32 _rsv14[207];
-	struct utmip_ctlr utmip;	/* 0x800 */
-};
-check_member(usb_ctlr, utmip, 0x800);
-
 enum usb_phy_type {		/* For use in lpm_ctrl[31:29] */
 	USB_PHY_UTMIP = 0,
 	USB_PHY_ULPI = 2,
@@ -118,6 +29,6 @@ enum usb_phy_type {		/* For use in lpm_ctrl[31:29] */
 	USB_PHY_HSIC = 4,
 };
 
-void usb_setup_utmip(struct usb_ctlr *usb);
-void usb_ehci_reset_and_prepare(struct usb_ctlr *usb, enum usb_phy_type type);
+void usb_setup_utmip(void *usb_base);
+
 #endif