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Current Path: /usr/src/sys/arm/freescale/imx

usr / src / sys / arm / freescale / imx /

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📄 files.imx5(1.32 KB)
📄 files.imx6(2.03 KB)
📄 imx51_ccm.c(17.31 KB)
📄 imx51_ccmreg.h(10.15 KB)
📄 imx51_ccmvar.h(4.17 KB)
📄 imx51_dpllreg.h(4.46 KB)
📄 imx51_ipuv3.c(19.86 KB)
📄 imx51_ipuv3_fbd.c(10.14 KB)
📄 imx51_ipuv3reg.h(33.8 KB)
📄 imx51_machdep.c(2.9 KB)
📄 imx51_sdmareg.h(5.32 KB)
📄 imx51_ssireg.h(9.02 KB)
📄 imx51_tzicreg.h(3.79 KB)
📄 imx53_machdep.c(2.8 KB)
📄 imx6_ahci.c(9.54 KB)
📄 imx6_anatop.c(23.38 KB)
📄 imx6_anatopreg.h(8.44 KB)
📄 imx6_anatopvar.h(2.11 KB)
📄 imx6_audmux.c(4.36 KB)
📄 imx6_ccm.c(12.29 KB)
📄 imx6_ccmreg.h(6.48 KB)
📄 imx6_hdmi.c(5.85 KB)
📄 imx6_ipu.c(35.34 KB)
📄 imx6_machdep.c(12.98 KB)
📄 imx6_machdep.h(1.56 KB)
📄 imx6_mp.c(5.46 KB)
📄 imx6_pl310.c(2.28 KB)
📄 imx6_sdma.c(11.34 KB)
📄 imx6_sdma.h(6.92 KB)
📄 imx6_snvs.c(6.2 KB)
📄 imx6_src.c(3.69 KB)
📄 imx6_src.h(1.46 KB)
📄 imx6_ssi.c(20.24 KB)
📄 imx6_usbphy.c(5.59 KB)
📄 imx_ccmvar.h(2.74 KB)
📄 imx_console.c(3.97 KB)
📄 imx_epit.c(13.28 KB)
📄 imx_gpio.c(23.44 KB)
📄 imx_gpt.c(12.28 KB)
📄 imx_gptreg.h(3.84 KB)
📄 imx_i2c.c(20.06 KB)
📄 imx_iomux.c(9.32 KB)
📄 imx_iomuxreg.h(2.92 KB)
📄 imx_iomuxvar.h(2.03 KB)
📄 imx_machdep.c(4.55 KB)
📄 imx_machdep.h(2.43 KB)
📄 imx_nop_usbphy.c(3.07 KB)
📄 imx_spi.c(16.13 KB)
📄 imx_wdog.c(7.36 KB)
📄 imx_wdogreg.h(2.91 KB)
📄 std.imx51(126 B)
📄 std.imx53(126 B)
📄 std.imx6(127 B)
📄 tzic.c(7.29 KB)

Editing: imx6_src.c

/*-
 * Copyright (c) 2015 Oleksandr Tymoshenko <gonzo@freebsd.org>
 * 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 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * System Reset Control for iMX6
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/rman.h>

#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>

#include <machine/bus.h>

#include <arm/freescale/imx/imx6_src.h>

#define	SRC_SCR		0
#define		SW_IPU1_RST	(1 << 3)

struct src_softc {
	device_t	dev;
	struct resource	*mem_res;
};

static struct src_softc *src_sc;

static inline uint32_t
RD4(struct src_softc *sc, bus_size_t off)
{

return (bus_read_4(sc->mem_res, off));
}

static inline void
WR4(struct src_softc *sc, bus_size_t off, uint32_t val)
{

bus_write_4(sc->mem_res, off, val);
}

int
src_reset_ipu(void)
{
	uint32_t reg;
	int timeout = 10000;

if (src_sc == NULL)
		return (-1);

reg = RD4(src_sc, SRC_SCR);
	reg |= SW_IPU1_RST;
	WR4(src_sc, SRC_SCR, reg);

while (timeout-- > 0) {
		reg = RD4(src_sc, SRC_SCR);
		if (reg & SW_IPU1_RST)
			DELAY(1);
		else
			break;
	}

if (timeout < 0)
		return (-1);
	else
		return (0);
}

static int
src_detach(device_t dev)
{
	struct src_softc *sc;

sc = device_get_softc(dev);

if (sc->mem_res != NULL)
		bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res);

return (0);
}

static int
src_attach(device_t dev)
{
	struct src_softc *sc;
	int err, rid;

sc = device_get_softc(dev);
	err = 0;

/* Allocate bus_space resources. */
	rid = 0;
	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
	    RF_ACTIVE);
	if (sc->mem_res == NULL) {
		device_printf(dev, "Cannot allocate memory resources\n");
		err = ENXIO;
		goto out;
	}

src_sc = sc;

err = 0;

out:

if (err != 0)
		src_detach(dev);

return (err);
}

static int
src_probe(device_t dev)
{

if ((ofw_bus_is_compatible(dev, "fsl,imx6q-src") == 0) &&
            (ofw_bus_is_compatible(dev, "fsl,imx6-src") == 0))
		return (ENXIO);

device_set_desc(dev, "Freescale i.MX6 System Reset Controller");

return (BUS_PROBE_DEFAULT);
}

static device_method_t src_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,  src_probe),
	DEVMETHOD(device_attach, src_attach),
	DEVMETHOD(device_detach, src_detach),

DEVMETHOD_END
};

static driver_t src_driver = {
	"src",
	src_methods,
	sizeof(struct src_softc)
};

static devclass_t src_devclass;

DRIVER_MODULE(src, simplebus, src_driver, src_devclass, 0, 0);

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Editing: imx6_src.c

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