| Current Path : /sys/amd64/compile/hs32/modules/usr/src/sys/modules/mvs/@/amd64/compile/hs32/modules/usr/src/sys/modules/if_epair/@/mips/rt305x/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/mvs/@/amd64/compile/hs32/modules/usr/src/sys/modules/if_epair/@/mips/rt305x/rt305x_gpio.c |
/*-
* Copyright (c) 2010-2011, Aleksandr Rybalko <ray@ddteam.net>
* Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
* Copyright (c) 2009, Luiz Otavio O Souza.
* 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 unmodified, 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 THE 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 THE 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.
*/
/*
* GPIO driver for RT305X SoC.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/mips/rt305x/rt305x_gpio.c 220297 2011-04-03 14:39:55Z adrian $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/gpio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <mips/rt305x/rt305xreg.h>
#include <mips/rt305x/rt305x_gpio.h>
#include <mips/rt305x/rt305x_gpiovar.h>
#include <mips/rt305x/rt305x_sysctlvar.h>
#include "gpio_if.h"
#ifdef notyet
#define DEFAULT_CAPS (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | GPIO_PIN_INVIN | \
GPIO_PIN_INVOUT | GPIO_PIN_REPORT )
#else
#define DEFAULT_CAPS (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | GPIO_PIN_INVIN | \
GPIO_PIN_INVOUT )
#endif
/*
* Helpers
*/
static void rt305x_gpio_pin_configure(struct rt305x_gpio_softc *sc,
struct gpio_pin *pin, uint32_t flags);
/*
* Driver stuff
*/
static int rt305x_gpio_probe(device_t dev);
static int rt305x_gpio_attach(device_t dev);
static int rt305x_gpio_detach(device_t dev);
static int rt305x_gpio_intr(void *arg);
int rt305x_get_int_mask (device_t);
void rt305x_set_int_mask (device_t, uint32_t);
int rt305x_get_int_status(device_t);
void rt305x_set_int_status(device_t, uint32_t);
/*
* GPIO interface
*/
static int rt305x_gpio_pin_max(device_t dev, int *maxpin);
static int rt305x_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps);
static int rt305x_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t
*flags);
static int rt305x_gpio_pin_getname(device_t dev, uint32_t pin, char *name);
static int rt305x_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags);
static int rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value);
static int rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val);
static int rt305x_gpio_pin_toggle(device_t dev, uint32_t pin);
static void
rt305x_gpio_pin_configure(struct rt305x_gpio_softc *sc, struct gpio_pin *pin,
unsigned int flags)
{
GPIO_LOCK(sc);
/*
* Manage input/output
*/
if (flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) {
pin->gp_flags &= ~(GPIO_PIN_INPUT|GPIO_PIN_OUTPUT);
if (flags & GPIO_PIN_OUTPUT) {
pin->gp_flags |= GPIO_PIN_OUTPUT;
GPIO_BIT_SET(sc, pin->gp_pin, DIR);
}
else {
pin->gp_flags |= GPIO_PIN_INPUT;
GPIO_BIT_CLR(sc, pin->gp_pin, DIR);
}
}
if (flags & GPIO_PIN_INVOUT) {
pin->gp_flags |= GPIO_PIN_INVOUT;
GPIO_BIT_SET(sc, pin->gp_pin, POL);
}
else {
pin->gp_flags &= ~GPIO_PIN_INVOUT;
GPIO_BIT_CLR(sc, pin->gp_pin, POL);
}
if (flags & GPIO_PIN_INVIN) {
pin->gp_flags |= GPIO_PIN_INVIN;
GPIO_BIT_SET(sc, pin->gp_pin, POL);
}
else {
pin->gp_flags &= ~GPIO_PIN_INVIN;
GPIO_BIT_CLR(sc, pin->gp_pin, POL);
}
#ifdef notyet
/* Enable interrupt bits for rising/falling transitions */
if (flags & GPIO_PIN_REPORT) {
pin->gp_flags |= GPIO_PIN_REPORT;
GPIO_BIT_SET(sc, pin->gp_pin, RENA);
GPIO_BIT_SET(sc, pin->gp_pin, FENA);
device_printf(sc->dev, "Will report interrupt on pin %d\n",
pin->gp_pin);
}
else {
pin->gp_flags &= ~GPIO_PIN_REPORT;
GPIO_BIT_CLR(sc, pin->gp_pin, RENA);
GPIO_BIT_CLR(sc, pin->gp_pin, FENA);
}
#else
/* Disable generating interrupts for now */
GPIO_BIT_CLR(sc, pin->gp_pin, RENA);
GPIO_BIT_CLR(sc, pin->gp_pin, FENA);
#endif
GPIO_UNLOCK(sc);
}
static int
rt305x_gpio_pin_max(device_t dev, int *maxpin)
{
*maxpin = NGPIO - 1;
return (0);
}
static int
rt305x_gpio_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps)
{
struct rt305x_gpio_softc *sc = device_get_softc(dev);
int i;
for (i = 0; i < sc->gpio_npins; i++) {
if (sc->gpio_pins[i].gp_pin == pin)
break;
}
if (i >= sc->gpio_npins)
return (EINVAL);
GPIO_LOCK(sc);
*caps = sc->gpio_pins[i].gp_caps;
GPIO_UNLOCK(sc);
return (0);
}
static int
rt305x_gpio_pin_getflags(device_t dev, uint32_t pin, uint32_t *flags)
{
struct rt305x_gpio_softc *sc = device_get_softc(dev);
int i;
for (i = 0; i < sc->gpio_npins; i++) {
if (sc->gpio_pins[i].gp_pin == pin)
break;
}
if (i >= sc->gpio_npins)
return (EINVAL);
GPIO_LOCK(sc);
*flags = sc->gpio_pins[i].gp_flags;
GPIO_UNLOCK(sc);
return (0);
}
static int
rt305x_gpio_pin_getname(device_t dev, uint32_t pin, char *name)
{
struct rt305x_gpio_softc *sc = device_get_softc(dev);
int i;
for (i = 0; i < sc->gpio_npins; i++) {
if (sc->gpio_pins[i].gp_pin == pin)
break;
}
if (i >= sc->gpio_npins)
return (EINVAL);
GPIO_LOCK(sc);
memcpy(name, sc->gpio_pins[i].gp_name, GPIOMAXNAME);
GPIO_UNLOCK(sc);
return (0);
}
static int
rt305x_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags)
{
int i;
struct rt305x_gpio_softc *sc = device_get_softc(dev);
for (i = 0; i < sc->gpio_npins; i++) {
if (sc->gpio_pins[i].gp_pin == pin)
break;
}
if (i >= sc->gpio_npins)
return (EINVAL);
/* Filter out unwanted flags */
if ((flags &= sc->gpio_pins[i].gp_caps) != flags)
return (EINVAL);
/* Can't mix input/output together */
if ((flags & (GPIO_PIN_INPUT|GPIO_PIN_OUTPUT)) ==
(GPIO_PIN_INPUT|GPIO_PIN_OUTPUT))
return (EINVAL);
rt305x_gpio_pin_configure(sc, &sc->gpio_pins[i], flags);
return (0);
}
static int
rt305x_gpio_pin_set(device_t dev, uint32_t pin, unsigned int value)
{
struct rt305x_gpio_softc *sc = device_get_softc(dev);
int i;
for (i = 0; i < sc->gpio_npins; i++) {
if (sc->gpio_pins[i].gp_pin == pin)
break;
}
if (i >= sc->gpio_npins)
return (EINVAL);
GPIO_LOCK(sc);
if (value) GPIO_BIT_SET(sc, i, DATA);
else GPIO_BIT_CLR(sc, i, DATA);
GPIO_UNLOCK(sc);
return (0);
}
static int
rt305x_gpio_pin_get(device_t dev, uint32_t pin, unsigned int *val)
{
struct rt305x_gpio_softc *sc = device_get_softc(dev);
int i;
for (i = 0; i < sc->gpio_npins; i++) {
if (sc->gpio_pins[i].gp_pin == pin)
break;
}
if (i >= sc->gpio_npins)
return (EINVAL);
GPIO_LOCK(sc);
*val = GPIO_BIT_GET(sc, i, DATA);
GPIO_UNLOCK(sc);
return (0);
}
static int
rt305x_gpio_pin_toggle(device_t dev, uint32_t pin)
{
int i;
struct rt305x_gpio_softc *sc = device_get_softc(dev);
for (i = 0; i < sc->gpio_npins; i++) {
if (sc->gpio_pins[i].gp_pin == pin)
break;
}
if (i >= sc->gpio_npins)
return (EINVAL);
GPIO_LOCK(sc);
GPIO_BIT_SET(sc, i, TOG);
GPIO_UNLOCK(sc);
return (0);
}
static int
rt305x_gpio_intr(void *arg)
{
struct rt305x_gpio_softc *sc = arg;
#ifdef notyet
uint32_t i;
#endif
uint64_t input, value;
#ifdef notyet
uint64_t reset_pin;
char notify[16];
char pinname[6];
#endif
/* Read all reported pins */
input = GPIO_READ_ALL(sc, INT);
/* Clear int status */
GPIO_WRITE_ALL(sc, INT, input);
/* Clear report for OUTs */
input &= ~GPIO_READ_ALL(sc, DIR);
value = input & GPIO_READ_ALL(sc, DATA);
if (!input) goto intr_done;
#ifdef notyet
/* if reset_gpio and this pin is input */
if (sc->reset_gpio >= 0 && (input & (1 << sc->reset_gpio))) {
/* get reset_gpio pin value */
reset_pin = (value & (1 << sc->reset_gpio))?1:0;
if ( sc->reset_gpio_last != reset_pin ) {
/*
* if now reset is high, check how long
* and do reset if less than 2 seconds
*/
if ( reset_pin &&
(time_uptime - sc->reset_gpio_ontime) < 2 )
shutdown_nice(0);
sc->reset_gpio_last = reset_pin;
sc->reset_gpio_ontime = time_uptime;
}
}
for ( i = 0; i < NGPIO; i ++ )
{
/* Next if output pin */
if ( !(( input >> i) & 1) ) continue;
if ( (((value & input) >> i) & 1) != sc->gpio_pins[i].gp_last )
{
/* !system=GPIO subsystem=pin7 type=PIN_HIGH period=3 */
snprintf(notify , sizeof(notify ), "period=%d",
(uint32_t)time_uptime - sc->gpio_pins[i].gp_time);
snprintf(pinname, sizeof(pinname), "pin%02d", i);
devctl_notify("GPIO", pinname,
(((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW",
notify);
printf("GPIO[%s] %s %s\n", pinname,
(((value & input) >> i) & 1)?"PIN_HIGH":"PIN_LOW",
notify);
sc->gpio_pins[i].gp_last = ((value & input) >> i) & 1;
sc->gpio_pins[i].gp_time = time_uptime;
}
}
#endif
intr_done:
return (FILTER_HANDLED);
}
static int
rt305x_gpio_probe(device_t dev)
{
device_set_desc(dev, "RT305X GPIO driver");
return (0);
}
static uint64_t
rt305x_gpio_init(device_t dev)
{
uint64_t avl = ~0ULL;
uint32_t gmode = rt305x_sysctl_get(SYSCTL_GPIOMODE);
if (!(gmode & SYSCTL_GPIOMODE_RGMII_GPIO_MODE))
avl &= ~RGMII_GPIO_MODE_MASK;
if (!(gmode & SYSCTL_GPIOMODE_SDRAM_GPIO_MODE))
avl &= ~SDRAM_GPIO_MODE_MASK;
if (!(gmode & SYSCTL_GPIOMODE_MDIO_GPIO_MODE))
avl &= ~MDIO_GPIO_MODE_MASK;
if (!(gmode & SYSCTL_GPIOMODE_JTAG_GPIO_MODE))
avl &= ~JTAG_GPIO_MODE_MASK;
if (!(gmode & SYSCTL_GPIOMODE_UARTL_GPIO_MODE))
avl &= ~UARTL_GPIO_MODE_MASK;
if (!(gmode & SYSCTL_GPIOMODE_SPI_GPIO_MODE))
avl &= ~SPI_GPIO_MODE_MASK;
if (!(gmode & SYSCTL_GPIOMODE_I2C_GPIO_MODE))
avl &= ~I2C_GPIO_MODE_MASK;
if ((gmode & SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO) !=
SYSCTL_GPIOMODE_UARTF_SHARE_MODE_GPIO)
avl &= ~I2C_GPIO_MODE_MASK;
/* D-Link DAP-1350 Board have
* MDIO_GPIO_MODE
* UARTF_GPIO_MODE
* SPI_GPIO_MODE
* I2C_GPIO_MODE
* So we have
* 00000001 10000000 01111111 11111110
*/
return (avl);
}
#define DAP1350_RESET_GPIO 10
static int
rt305x_gpio_attach(device_t dev)
{
struct rt305x_gpio_softc *sc = device_get_softc(dev);
int error = 0, i;
uint64_t avlpins = 0;
sc->reset_gpio = DAP1350_RESET_GPIO;
KASSERT((device_get_unit(dev) == 0),
("rt305x_gpio_gpio: Only one gpio module supported"));
mtx_init(&sc->gpio_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
MTX_DEF);
/* Map control/status registers. */
sc->gpio_mem_rid = 0;
sc->gpio_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->gpio_mem_rid, RF_ACTIVE);
if (sc->gpio_mem_res == NULL) {
device_printf(dev, "couldn't map memory\n");
error = ENXIO;
rt305x_gpio_detach(dev);
return(error);
}
if ((sc->gpio_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&sc->gpio_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
device_printf(dev, "unable to allocate IRQ resource\n");
return (ENXIO);
}
if ((bus_setup_intr(dev, sc->gpio_irq_res, INTR_TYPE_MISC,
/* rt305x_gpio_filter, */
rt305x_gpio_intr, NULL, sc, &sc->gpio_ih))) {
device_printf(dev,
"WARNING: unable to register interrupt handler\n");
return (ENXIO);
}
sc->dev = dev;
avlpins = rt305x_gpio_init(dev);
/* Configure all pins as input */
/* disable interrupts for all pins */
/* TODO */
sc->gpio_npins = NGPIO;
resource_int_value(device_get_name(dev), device_get_unit(dev),
"pins", &sc->gpio_npins);
for (i = 0; i < sc->gpio_npins; i++) {
sc->gpio_pins[i].gp_pin = i;
sc->gpio_pins[i].gp_caps = DEFAULT_CAPS;
sc->gpio_pins[i].gp_flags = 0;
}
/* Setup reset pin interrupt */
if (TUNABLE_INT_FETCH("reset_gpio", &sc->reset_gpio)) {
device_printf(dev, "\tHinted reset_gpio %d\n", sc->reset_gpio);
}
#ifdef notyet
if (sc->reset_gpio != -1) {
rt305x_gpio_pin_setflags(dev, sc->reset_gpio,
GPIO_PIN_INPUT|GPIO_PIN_INVOUT|
GPIO_PIN_INVOUT|GPIO_PIN_REPORT);
device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio);
}
#else
if (sc->reset_gpio != -1) {
rt305x_gpio_pin_setflags(dev, sc->reset_gpio,
GPIO_PIN_INPUT|GPIO_PIN_INVOUT);
device_printf(dev, "\tUse reset_gpio %d\n", sc->reset_gpio);
}
#endif
device_add_child(dev, "gpioc", device_get_unit(dev));
device_add_child(dev, "gpiobus", device_get_unit(dev));
return (bus_generic_attach(dev));
}
static int
rt305x_gpio_detach(device_t dev)
{
struct rt305x_gpio_softc *sc = device_get_softc(dev);
KASSERT(mtx_initialized(&sc->gpio_mtx), ("gpio mutex not initialized"));
bus_generic_detach(dev);
if (sc->gpio_mem_res)
bus_release_resource(dev, SYS_RES_MEMORY, sc->gpio_mem_rid,
sc->gpio_mem_res);
mtx_destroy(&sc->gpio_mtx);
return(0);
}
#ifdef notyet
static struct resource *
rt305x_gpio_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct obio_softc *sc = device_get_softc(bus);
struct resource *rv;
struct rman *rm;
switch (type) {
case SYS_RES_GPIO:
rm = &sc->gpio_rman;
break;
default:
printf("%s: unknown resource type %d\n", __func__, type);
return (0);
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == 0) {
printf("%s: could not reserve resource\n", __func__);
return (0);
}
rman_set_rid(rv, *rid);
return (rv);
}
static int
rt305x_gpio_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
return (rman_activate_resource(r));
}
static int
rt305x_gpio_deactivate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
return (rman_deactivate_resource(r));
}
static int
rt305x_gpio_release_resource(device_t dev, device_t child, int type,
int rid, struct resource *r)
{
rman_release_resource(r);
return (0);
}
#endif
static device_method_t rt305x_gpio_methods[] = {
DEVMETHOD(device_probe, rt305x_gpio_probe),
DEVMETHOD(device_attach, rt305x_gpio_attach),
DEVMETHOD(device_detach, rt305x_gpio_detach),
/* GPIO protocol */
DEVMETHOD(gpio_pin_max, rt305x_gpio_pin_max),
DEVMETHOD(gpio_pin_getname, rt305x_gpio_pin_getname),
DEVMETHOD(gpio_pin_getflags, rt305x_gpio_pin_getflags),
DEVMETHOD(gpio_pin_getcaps, rt305x_gpio_pin_getcaps),
DEVMETHOD(gpio_pin_setflags, rt305x_gpio_pin_setflags),
DEVMETHOD(gpio_pin_get, rt305x_gpio_pin_get),
DEVMETHOD(gpio_pin_set, rt305x_gpio_pin_set),
DEVMETHOD(gpio_pin_toggle, rt305x_gpio_pin_toggle),
{0, 0},
};
static driver_t rt305x_gpio_driver = {
"gpio",
rt305x_gpio_methods,
sizeof(struct rt305x_gpio_softc),
};
static devclass_t rt305x_gpio_devclass;
DRIVER_MODULE(rt305x_gpio, obio, rt305x_gpio_driver,
rt305x_gpio_devclass, 0, 0);