1 files changed, 0 insertions, 457 deletions
diff --git a/sys/arm/ti/twl/twl.c b/sys/arm/ti/twl/twl.c
deleted file mode 100644
index 9dead053a8a7..000000000000
--- a/sys/arm/ti/twl/twl.c
+++ /dev/null
@@ -1,457 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2011
- *	Ben Gray <ben.r.gray@gmail.com>.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * Texas Instruments TWL4030/TWL5030/TWL60x0/TPS659x0 Power Management and
- * Audio CODEC devices.
- *
- * This code is based on the Linux TWL multifunctional device driver, which is
- * copyright (C) 2005-2006 Texas Instruments, Inc.
- *
- * These chips are typically used as support ICs for the OMAP range of embedded
- * ARM processes/SOC from Texas Instruments.  They are typically used to control
- * on board voltages, however some variants have other features like audio
- * codecs, USB OTG transceivers, RTC, PWM, etc.
- *
- * This driver acts as a bus for more specific companion devices.
- *
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/module.h>
-#include <sys/bus.h>
-#include <sys/resource.h>
-#include <sys/rman.h>
-#include <sys/sysctl.h>
-#include <sys/mutex.h>
-#include <sys/malloc.h>
-
-#include <machine/bus.h>
-#include <machine/resource.h>
-#include <machine/intr.h>
-
-#include <dev/iicbus/iicbus.h>
-#include <dev/iicbus/iiconf.h>
-
-#include <dev/ofw/openfirm.h>
-#include <dev/ofw/ofw_bus.h>
-#include <dev/ofw/ofw_bus_subr.h>
-
-#include "arm/ti/twl/twl.h"
-
-/* TWL device IDs */
-#define TWL_DEVICE_UNKNOWN          0xffff
-#define TWL_DEVICE_4030             0x4030
-#define TWL_DEVICE_6025             0x6025
-#define TWL_DEVICE_6030             0x6030
-
-/* Each TWL device typically has more than one I2C address */
-#define TWL_MAX_SUBADDRS            4
-
-/* The maximum number of bytes that can be written in one call */
-#define TWL_MAX_IIC_DATA_SIZE       63
-
-/* The TWL devices typically use 4 I2C address for the different internal
- * register sets, plus one SmartReflex I2C address.
- */
-#define TWL_CHIP_ID0                0x48
-#define TWL_CHIP_ID1                0x49
-#define TWL_CHIP_ID2                0x4A
-#define TWL_CHIP_ID3                0x4B
-
-#define TWL_SMARTREFLEX_CHIP_ID     0x12
-
-#define TWL_INVALID_CHIP_ID         0xff
-
-struct twl_softc {
-	device_t		sc_dev;
-	struct mtx		sc_mtx;
-	unsigned int	sc_type;
-
-	uint8_t			sc_subaddr_map[TWL_MAX_SUBADDRS];
-
-	struct intr_config_hook	sc_scan_hook;
-
-	device_t		sc_vreg;
-	device_t		sc_clks;
-};
-
-/**
- *	Macros for driver mutex locking
- */
-#define TWL_LOCK(_sc)             mtx_lock(&(_sc)->sc_mtx)
-#define	TWL_UNLOCK(_sc)           mtx_unlock(&(_sc)->sc_mtx)
-#define TWL_LOCK_INIT(_sc) \
-	mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \
-	         "twl", MTX_DEF)
-#define TWL_LOCK_DESTROY(_sc)     mtx_destroy(&_sc->sc_mtx);
-#define TWL_ASSERT_LOCKED(_sc)    mtx_assert(&_sc->sc_mtx, MA_OWNED);
-#define TWL_ASSERT_UNLOCKED(_sc)  mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
-
-/**
- *	twl_is_4030 - returns true if the device is TWL4030
- *	twl_is_6025 - returns true if the device is TWL6025
- *	twl_is_6030 - returns true if the device is TWL6030
- *	@sc: device soft context
- *
- *	Returns a non-zero value if the device matches.
- *
- *	RETURNS:
- *	Returns a non-zero value if the device matches, otherwise zero.
- */
-int
-twl_is_4030(device_t dev)
-{
-	struct twl_softc *sc = device_get_softc(dev);
-	return (sc->sc_type == TWL_DEVICE_4030);
-}
-
-int
-twl_is_6025(device_t dev)
-{
-	struct twl_softc *sc = device_get_softc(dev);
-	return (sc->sc_type == TWL_DEVICE_6025);
-}
-
-int
-twl_is_6030(device_t dev)
-{
-	struct twl_softc *sc = device_get_softc(dev);
-	return (sc->sc_type == TWL_DEVICE_6030);
-}
-
-/**
- *	twl_read - read one or more registers from the TWL device
- *	@sc: device soft context
- *	@nsub: the sub-module to read from
- *	@reg: the register offset within the module to read
- *	@buf: buffer to store the bytes in
- *	@cnt: the number of bytes to read
- *
- *	Reads one or more registers and stores the result in the suppled buffer.
- *
- *	RETURNS:
- *	Zero on success or an error code on failure.
- */
-int
-twl_read(device_t dev, uint8_t nsub, uint8_t reg, uint8_t *buf, uint16_t cnt)
-{
-	struct twl_softc *sc;
-	struct iic_msg msg[2];
-	uint8_t addr;
-	int rc;
-
-	sc = device_get_softc(dev);
-
-	TWL_LOCK(sc);
-	addr = sc->sc_subaddr_map[nsub];
-	TWL_UNLOCK(sc);
-
-	if (addr == TWL_INVALID_CHIP_ID)
-		return (EIO);
-
-	/* Set the address to read from */
-	msg[0].slave = addr;
-	msg[0].flags = IIC_M_WR | IIC_M_NOSTOP;
-	msg[0].len = 1;
-	msg[0].buf = &reg;
-	/* Read the data back */
-	msg[1].slave = addr;
-	msg[1].flags = IIC_M_RD;
-	msg[1].len = cnt;
-	msg[1].buf = buf;
-
-	rc = iicbus_transfer(dev, msg, 2);
-	if (rc != 0) {
-		device_printf(dev, "iicbus read failed (adr:0x%02x, reg:0x%02x)\n",
-		              addr, reg);
-		return (EIO);
-	}
-
-	return (0);
-}
-
-/**
- *	twl_write - writes one or more registers to the TWL device
- *	@sc: device soft context
- *	@nsub: the sub-module to read from
- *	@reg: the register offset within the module to read
- *	@buf: data to write
- *	@cnt: the number of bytes to write
- *
- *	Writes one or more registers.
- *
- *	RETURNS:
- *	Zero on success or a negative error code on failure.
- */
-int
-twl_write(device_t dev, uint8_t nsub, uint8_t reg, uint8_t *buf, uint16_t cnt)
-{
-	struct twl_softc *sc;
-	struct iic_msg msg;
-	uint8_t addr;
-	uint8_t tmp_buf[TWL_MAX_IIC_DATA_SIZE + 1];
-	int rc;
-
-	if (cnt > TWL_MAX_IIC_DATA_SIZE)
-		return (ENOMEM);
-
-	/* Set the register address as the first byte */
-	tmp_buf[0] = reg;
-	memcpy(&tmp_buf[1], buf, cnt);
-
-	sc = device_get_softc(dev);
-
-	TWL_LOCK(sc);
-	addr = sc->sc_subaddr_map[nsub];
-	TWL_UNLOCK(sc);
-
-	if (addr == TWL_INVALID_CHIP_ID)
-		return (EIO);
-
-	/* Setup the transfer and execute it */
-	msg.slave = addr;
-	msg.flags = IIC_M_WR;
-	msg.len = cnt + 1;
-	msg.buf = tmp_buf;
-
-	rc = iicbus_transfer(dev, &msg, 1);
-	if (rc != 0) {
-		device_printf(sc->sc_dev, "iicbus write failed (adr:0x%02x, reg:0x%02x)\n",
-		              addr, reg);
-		return (EIO);
-	}
-
-	return (0);
-}
-
-/**
- *	twl_test_present - checks if a device with given address is present
- *	@sc: device soft context
- *	@addr: the address of the device to scan for
- *
- *	Sends just the address byte and checks for an ACK. If no ACK then device
- *	is assumed to not be present.
- *
- *	RETURNS:
- *	EIO if device is not present, otherwise 0 is returned.
- */
-static int
-twl_test_present(struct twl_softc *sc, uint8_t addr)
-{
-	struct iic_msg msg;
-	uint8_t tmp;
-
-	/* Set the address to read from */
-	msg.slave = addr;
-	msg.flags = IIC_M_RD;
-	msg.len = 1;
-	msg.buf = &tmp;
-
-	if (iicbus_transfer(sc->sc_dev, &msg, 1) != 0)
-		return (EIO);
-
-	return (0);
-}
-
-/**
- *	twl_scan - scans the i2c bus for sub modules
- *	@dev: the twl device
- *
- *	TWL devices don't just have one i2c slave address, rather they have up to
- *	5 other addresses, each is for separate modules within the device. This
- *	function scans the bus for 4 possible sub-devices and stores the info
- *	internally.
- *
- */
-static void
-twl_scan(void *dev)
-{
-	struct twl_softc *sc;
-	unsigned i;
-	uint8_t devs[TWL_MAX_SUBADDRS];
-	uint8_t base = TWL_CHIP_ID0;
-
-	sc = device_get_softc((device_t)dev);
-
-	memset(devs, TWL_INVALID_CHIP_ID, TWL_MAX_SUBADDRS);
-
-	/* Try each of the addresses (0x48, 0x49, 0x4a & 0x4b) to determine which
-	 * sub modules we have.
-	 */
-	for (i = 0; i < TWL_MAX_SUBADDRS; i++) {
-		if (twl_test_present(sc, (base + i)) == 0) {
-			devs[i] = (base + i);
-			device_printf(sc->sc_dev, "Found (sub)device at 0x%02x\n", (base + i));
-		}
-	}
-
-	TWL_LOCK(sc);
-	memcpy(sc->sc_subaddr_map, devs, TWL_MAX_SUBADDRS);
-	TWL_UNLOCK(sc);
-
-	/* Finished with the interrupt hook */
-	config_intrhook_disestablish(&sc->sc_scan_hook);
-}
-
-/**
- *	twl_probe - 
- *	@dev: the twl device
- *
- *	Scans the FDT for a match for the device, possible compatible device
- *	strings are; "ti,twl6030", "ti,twl6025", "ti,twl4030".  
- *
- *	The FDT compat string also determines the type of device (it is currently
- *	not possible to dynamically determine the device type).
- *
- */
-static int
-twl_probe(device_t dev)
-{
-	phandle_t node;
-	const char *compat;
-	int len, l;
-	struct twl_softc *sc;
-
-	if ((compat = ofw_bus_get_compat(dev)) == NULL)
-		return (ENXIO);
-
-	if ((node = ofw_bus_get_node(dev)) == 0)
-		return (ENXIO);
-
-	/* Get total 'compatible' prop len */
-	if ((len = OF_getproplen(node, "compatible")) <= 0)
-		return (ENXIO);
-
-	sc = device_get_softc(dev);
-	sc->sc_dev = dev;
-	sc->sc_type = TWL_DEVICE_UNKNOWN;
-
-	while (len > 0) {
-		if (strncasecmp(compat, "ti,twl6030", 10) == 0)
-			sc->sc_type = TWL_DEVICE_6030;
-		else if (strncasecmp(compat, "ti,twl6025", 10) == 0)
-			sc->sc_type = TWL_DEVICE_6025;
-		else if (strncasecmp(compat, "ti,twl4030", 10) == 0)
-			sc->sc_type = TWL_DEVICE_4030;
-		
-		if (sc->sc_type != TWL_DEVICE_UNKNOWN)
-			break;
-
-		/* Slide to the next sub-string. */
-		l = strlen(compat) + 1;
-		compat += l;
-		len -= l;
-	}
-
-	switch (sc->sc_type) {
-	case TWL_DEVICE_4030:
-		device_set_desc(dev, "TI TWL4030/TPS659x0 Companion IC");
-		break;
-	case TWL_DEVICE_6025:
-		device_set_desc(dev, "TI TWL6025 Companion IC");
-		break;
-	case TWL_DEVICE_6030:
-		device_set_desc(dev, "TI TWL6030 Companion IC");
-		break;
-	case TWL_DEVICE_UNKNOWN:
-	default:
-		return (ENXIO);
-	}
-
-	return (0);
-}
-
-static int
-twl_attach(device_t dev)
-{
-	struct twl_softc *sc;
-
-	sc = device_get_softc(dev);
-	sc->sc_dev = dev;
-
-	TWL_LOCK_INIT(sc);
-
-	/* We have to wait until interrupts are enabled. I2C read and write
-	 * only works if the interrupts are available.
-	 */
-	sc->sc_scan_hook.ich_func = twl_scan;
-	sc->sc_scan_hook.ich_arg = dev;
-
-	if (config_intrhook_establish(&sc->sc_scan_hook) != 0)
-		return (ENOMEM);
-
-	/* FIXME: should be in DTS file */
-	if ((sc->sc_vreg = device_add_child(dev, "twl_vreg", -1)) == NULL)
-		device_printf(dev, "could not allocate twl_vreg instance\n");
-	if ((sc->sc_clks = device_add_child(dev, "twl_clks", -1)) == NULL)
-		device_printf(dev, "could not allocate twl_clks instance\n");
-
-	return (bus_generic_attach(dev));
-}
-
-static int
-twl_detach(device_t dev)
-{
-	struct twl_softc *sc;
-
-	sc = device_get_softc(dev);
-
-	if (sc->sc_vreg)
-		device_delete_child(dev, sc->sc_vreg);
-	if (sc->sc_clks)
-		device_delete_child(dev, sc->sc_clks);
-
-	TWL_LOCK_DESTROY(sc);
-
-	return (0);
-}
-
-static device_method_t twl_methods[] = {
-	DEVMETHOD(device_probe,		twl_probe),
-	DEVMETHOD(device_attach,	twl_attach),
-	DEVMETHOD(device_detach,	twl_detach),
-
-	{0, 0},
-};
-
-static driver_t twl_driver = {
-	"twl",
-	twl_methods,
-	sizeof(struct twl_softc),
-};
-
-DRIVER_MODULE(twl, iicbus, twl_driver, 0, 0);
-MODULE_VERSION(twl, 1);