diff options
author | Furquan Shaikh <furquan@google.com> | 2014-08-06 09:53:55 -0700 |
---|---|---|
committer | Patrick Georgi <pgeorgi@google.com> | 2015-03-26 00:27:09 +0100 |
commit | 2296774af67f2fd728c662d5120e29b849b4d685 (patch) | |
tree | 7785f3e9270a60d44e5f747b7eb0e1a2425c7e56 /src/soc/nvidia/tegra/usb.c | |
parent | 6941b77c879b5411844914dd87796a28b04e3caa (diff) |
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>
Diffstat (limited to 'src/soc/nvidia/tegra/usb.c')
-rw-r--r-- | src/soc/nvidia/tegra/usb.c | 154 |
1 files changed, 126 insertions, 28 deletions
diff --git a/src/soc/nvidia/tegra/usb.c b/src/soc/nvidia/tegra/usb.c index e0455ed05c..3268ee1a74 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); } + |