ef6ca4337d
files to vendor-provided ones. It should make easier to adopt platform code to new revisions of hardware and to use DTS overlays for various Beaglebone extensions (shields/capes). Original dts filenames were not changed, they're now wrappers over dts files provided by TI. So make sure you update .dtb files on your devices as part of kernel update GPIO addressing was changed: instead of one global /dev/gpioc0 there are per-bank instances of /dev/gpiocX. Each bank has 32 pins so for instance pin 121 on /dev/gpioc0 in old addressing scheme is now pin 25 on /dev/gpioc3 On Pandaboard serial console devices was changed from /dev/ttyu0 to /dev/ttyu2 so you'll have to update /etc/ttys to get login prompt on serial port in multiuser mode. Single user mode serial console should work as-is Differential Revision: https://reviews.freebsd.org/D2146 Reviewed by: rpaulo, ian, Michal Meloun, Svatopluk Kraus
365 lines
12 KiB
C
365 lines
12 KiB
C
/*-
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* Copyright (c) 2011
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* Ben Gray <ben.r.gray@gmail.com>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/rman.h>
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#include <sys/module.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <machine/bus.h>
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#include <arm/ti/ti_prcm.h>
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#include <arm/ti/usb/omap_usb.h>
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/*
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* USB TLL Module
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*/
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#define OMAP_USBTLL_REVISION 0x0000
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#define OMAP_USBTLL_SYSCONFIG 0x0010
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#define OMAP_USBTLL_SYSSTATUS 0x0014
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#define OMAP_USBTLL_IRQSTATUS 0x0018
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#define OMAP_USBTLL_IRQENABLE 0x001C
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#define OMAP_USBTLL_TLL_SHARED_CONF 0x0030
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#define OMAP_USBTLL_TLL_CHANNEL_CONF(i) (0x0040 + (0x04 * (i)))
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#define OMAP_USBTLL_SAR_CNTX(i) (0x0400 + (0x04 * (i)))
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#define OMAP_USBTLL_ULPI_VENDOR_ID_LO(i) (0x0800 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_VENDOR_ID_HI(i) (0x0801 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_PRODUCT_ID_LO(i) (0x0802 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_PRODUCT_ID_HI(i) (0x0803 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_FUNCTION_CTRL(i) (0x0804 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_FUNCTION_CTRL_SET(i) (0x0805 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_FUNCTION_CTRL_CLR(i) (0x0806 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_INTERFACE_CTRL(i) (0x0807 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_INTERFACE_CTRL_SET(i) (0x0808 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_INTERFACE_CTRL_CLR(i) (0x0809 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_OTG_CTRL(i) (0x080A + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_OTG_CTRL_SET(i) (0x080B + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_OTG_CTRL_CLR(i) (0x080C + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_USB_INT_EN_RISE(i) (0x080D + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_USB_INT_EN_RISE_SET(i) (0x080E + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_USB_INT_EN_RISE_CLR(i) (0x080F + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_USB_INT_EN_FALL(i) (0x0810 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_USB_INT_EN_FALL_SET(i) (0x0811 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_USB_INT_EN_FALL_CLR(i) (0x0812 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_USB_INT_STATUS(i) (0x0813 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_USB_INT_LATCH(i) (0x0814 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_DEBUG(i) (0x0815 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_SCRATCH_REGISTER(i) (0x0816 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_SCRATCH_REGISTER_SET(i) (0x0817 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_SCRATCH_REGISTER_CLR(i) (0x0818 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_EXTENDED_SET_ACCESS(i) (0x082F + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_UTMI_VCONTROL_EN(i) (0x0830 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_UTMI_VCONTROL_EN_SET(i) (0x0831 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_UTMI_VCONTROL_EN_CLR(i) (0x0832 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_UTMI_VCONTROL_STATUS(i) (0x0833 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_UTMI_VCONTROL_LATCH(i) (0x0834 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_UTMI_VSTATUS(i) (0x0835 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_UTMI_VSTATUS_SET(i) (0x0836 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_UTMI_VSTATUS_CLR(i) (0x0837 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_USB_INT_LATCH_NOCLR(i) (0x0838 + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_VENDOR_INT_EN(i) (0x083B + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_VENDOR_INT_EN_SET(i) (0x083C + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_VENDOR_INT_EN_CLR(i) (0x083D + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_VENDOR_INT_STATUS(i) (0x083E + (0x100 * (i)))
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#define OMAP_USBTLL_ULPI_VENDOR_INT_LATCH(i) (0x083F + (0x100 * (i)))
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/* TLL Register Set */
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#define TLL_SYSCONFIG_CACTIVITY (1UL << 8)
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#define TLL_SYSCONFIG_SIDLE_SMART_IDLE (2UL << 3)
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#define TLL_SYSCONFIG_SIDLE_NO_IDLE (1UL << 3)
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#define TLL_SYSCONFIG_SIDLE_FORCED_IDLE (0UL << 3)
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#define TLL_SYSCONFIG_ENAWAKEUP (1UL << 2)
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#define TLL_SYSCONFIG_SOFTRESET (1UL << 1)
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#define TLL_SYSCONFIG_AUTOIDLE (1UL << 0)
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#define TLL_SYSSTATUS_RESETDONE (1UL << 0)
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#define TLL_SHARED_CONF_USB_90D_DDR_EN (1UL << 6)
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#define TLL_SHARED_CONF_USB_180D_SDR_EN (1UL << 5)
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#define TLL_SHARED_CONF_USB_DIVRATIO_MASK (7UL << 2)
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#define TLL_SHARED_CONF_USB_DIVRATIO_128 (7UL << 2)
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#define TLL_SHARED_CONF_USB_DIVRATIO_64 (6UL << 2)
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#define TLL_SHARED_CONF_USB_DIVRATIO_32 (5UL << 2)
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#define TLL_SHARED_CONF_USB_DIVRATIO_16 (4UL << 2)
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#define TLL_SHARED_CONF_USB_DIVRATIO_8 (3UL << 2)
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#define TLL_SHARED_CONF_USB_DIVRATIO_4 (2UL << 2)
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#define TLL_SHARED_CONF_USB_DIVRATIO_2 (1UL << 2)
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#define TLL_SHARED_CONF_USB_DIVRATIO_1 (0UL << 2)
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#define TLL_SHARED_CONF_FCLK_REQ (1UL << 1)
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#define TLL_SHARED_CONF_FCLK_IS_ON (1UL << 0)
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#define TLL_CHANNEL_CONF_DRVVBUS (1UL << 16)
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#define TLL_CHANNEL_CONF_CHRGVBUS (1UL << 15)
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#define TLL_CHANNEL_CONF_ULPINOBITSTUFF (1UL << 11)
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#define TLL_CHANNEL_CONF_ULPIAUTOIDLE (1UL << 10)
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#define TLL_CHANNEL_CONF_UTMIAUTOIDLE (1UL << 9)
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#define TLL_CHANNEL_CONF_ULPIDDRMODE (1UL << 8)
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#define TLL_CHANNEL_CONF_ULPIOUTCLKMODE (1UL << 7)
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#define TLL_CHANNEL_CONF_TLLFULLSPEED (1UL << 6)
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#define TLL_CHANNEL_CONF_TLLCONNECT (1UL << 5)
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#define TLL_CHANNEL_CONF_TLLATTACH (1UL << 4)
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#define TLL_CHANNEL_CONF_UTMIISADEV (1UL << 3)
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#define TLL_CHANNEL_CONF_CHANEN (1UL << 0)
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struct omap_tll_softc {
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device_t sc_dev;
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/* TLL register set */
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struct resource* tll_mem_res;
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int tll_mem_rid;
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};
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static struct omap_tll_softc *omap_tll_sc;
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static int omap_tll_attach(device_t dev);
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static int omap_tll_detach(device_t dev);
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static inline uint32_t
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omap_tll_read_4(struct omap_tll_softc *sc, bus_size_t off)
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{
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return bus_read_4(sc->tll_mem_res, off);
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}
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static inline void
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omap_tll_write_4(struct omap_tll_softc *sc, bus_size_t off, uint32_t val)
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{
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bus_write_4(sc->tll_mem_res, off, val);
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}
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void
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omap_tll_utmi_enable(unsigned int en_mask)
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{
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struct omap_tll_softc *sc;
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unsigned int i;
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uint32_t reg;
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sc = omap_tll_sc;
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if (sc == NULL)
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return;
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/* There are 3 TLL channels, one per USB controller so set them all up the
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* same, SDR mode, bit stuffing and no autoidle.
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*/
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for (i=0; i<3; i++) {
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reg = omap_tll_read_4(sc, OMAP_USBTLL_TLL_CHANNEL_CONF(i));
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reg &= ~(TLL_CHANNEL_CONF_UTMIAUTOIDLE
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| TLL_CHANNEL_CONF_ULPINOBITSTUFF
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| TLL_CHANNEL_CONF_ULPIDDRMODE);
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omap_tll_write_4(sc, OMAP_USBTLL_TLL_CHANNEL_CONF(i), reg);
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}
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/* Program the common TLL register */
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reg = omap_tll_read_4(sc, OMAP_USBTLL_TLL_SHARED_CONF);
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reg &= ~( TLL_SHARED_CONF_USB_90D_DDR_EN
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| TLL_SHARED_CONF_USB_DIVRATIO_MASK);
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reg |= ( TLL_SHARED_CONF_FCLK_IS_ON
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| TLL_SHARED_CONF_USB_DIVRATIO_2
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| TLL_SHARED_CONF_USB_180D_SDR_EN);
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omap_tll_write_4(sc, OMAP_USBTLL_TLL_SHARED_CONF, reg);
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/* Enable channels now */
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for (i = 0; i < 3; i++) {
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reg = omap_tll_read_4(sc, OMAP_USBTLL_TLL_CHANNEL_CONF(i));
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/* Enable only the reg that is needed */
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if ((en_mask & (1 << i)) == 0)
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continue;
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reg |= TLL_CHANNEL_CONF_CHANEN;
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omap_tll_write_4(sc, OMAP_USBTLL_TLL_CHANNEL_CONF(i), reg);
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}
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}
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static int
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omap_tll_init(struct omap_tll_softc *sc)
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{
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unsigned long timeout;
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int ret = 0;
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/* Enable the USB TLL */
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ti_prcm_clk_enable(USBTLL_CLK);
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/* Perform TLL soft reset, and wait until reset is complete */
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omap_tll_write_4(sc, OMAP_USBTLL_SYSCONFIG, TLL_SYSCONFIG_SOFTRESET);
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/* Set the timeout to 100ms*/
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timeout = (hz < 10) ? 1 : ((100 * hz) / 1000);
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/* Wait for TLL reset to complete */
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while ((omap_tll_read_4(sc, OMAP_USBTLL_SYSSTATUS) &
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TLL_SYSSTATUS_RESETDONE) == 0x00) {
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/* Sleep for a tick */
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pause("USBRESET", 1);
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if (timeout-- == 0) {
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device_printf(sc->sc_dev, "TLL reset operation timed out\n");
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ret = EINVAL;
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goto err_sys_status;
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}
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}
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/* CLOCKACTIVITY = 1 : OCP-derived internal clocks ON during idle
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* SIDLEMODE = 2 : Smart-idle mode. Sidleack asserted after Idlereq
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* assertion when no more activity on the USB.
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* ENAWAKEUP = 1 : Wakeup generation enabled
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*/
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omap_tll_write_4(sc, OMAP_USBTLL_SYSCONFIG, TLL_SYSCONFIG_ENAWAKEUP |
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TLL_SYSCONFIG_AUTOIDLE |
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TLL_SYSCONFIG_SIDLE_SMART_IDLE |
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TLL_SYSCONFIG_CACTIVITY);
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return(0);
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err_sys_status:
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/* Disable the TLL clocks */
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ti_prcm_clk_disable(USBTLL_CLK);
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return(ret);
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}
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static void
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omap_tll_disable(struct omap_tll_softc *sc)
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{
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unsigned long timeout;
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timeout = (hz < 10) ? 1 : ((100 * hz) / 1000);
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/* Reset the TLL module */
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omap_tll_write_4(sc, OMAP_USBTLL_SYSCONFIG, 0x0002);
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while ((omap_tll_read_4(sc, OMAP_USBTLL_SYSSTATUS) & (0x01)) == 0x00) {
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/* Sleep for a tick */
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pause("USBRESET", 1);
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if (timeout-- == 0) {
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device_printf(sc->sc_dev, "operation timed out\n");
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break;
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}
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}
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/* Disable functional and interface clocks for the TLL and HOST modules */
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ti_prcm_clk_disable(USBTLL_CLK);
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}
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static int
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omap_tll_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_is_compatible(dev, "ti,usbhs-tll"))
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return (ENXIO);
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device_set_desc(dev, "TI OMAP USB 2.0 TLL module");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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omap_tll_attach(device_t dev)
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{
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struct omap_tll_softc *sc;
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sc = device_get_softc(dev);
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/* save the device */
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sc->sc_dev = dev;
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/* Allocate resource for the TLL register set */
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sc->tll_mem_rid = 0;
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sc->tll_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->tll_mem_rid, RF_ACTIVE);
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if (!sc->tll_mem_res) {
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device_printf(dev, "Error: Could not map TLL memory\n");
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goto error;
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}
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omap_tll_init(sc);
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omap_tll_sc = sc;
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return (0);
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error:
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omap_tll_detach(dev);
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return (ENXIO);
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}
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static int
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omap_tll_detach(device_t dev)
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{
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struct omap_tll_softc *sc;
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sc = device_get_softc(dev);
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omap_tll_disable(sc);
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/* Release the other register set memory maps */
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if (sc->tll_mem_res) {
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bus_release_resource(dev, SYS_RES_MEMORY,
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sc->tll_mem_rid, sc->tll_mem_res);
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sc->tll_mem_res = NULL;
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}
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omap_tll_sc = NULL;
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return (0);
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}
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static device_method_t omap_tll_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, omap_tll_probe),
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DEVMETHOD(device_attach, omap_tll_attach),
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DEVMETHOD(device_detach, omap_tll_detach),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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{0, 0}
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};
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static driver_t omap_tll_driver = {
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"omap_tll",
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omap_tll_methods,
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sizeof(struct omap_tll_softc),
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};
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static devclass_t omap_tll_devclass;
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DRIVER_MODULE(omap_tll, simplebus, omap_tll_driver, omap_tll_devclass, 0, 0);
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