svn commit: r362400 - in stable/12/sys: arm/allwinner conf dev/mmc dev/mmc/host
Emmanuel Vadot
manu at FreeBSD.org
Fri Jun 19 18:05:16 UTC 2020
Author: manu
Date: Fri Jun 19 18:05:14 2020
New Revision: 362400
URL: https://svnweb.freebsd.org/changeset/base/362400
Log:
MFC r359924-r359925, r359927, r359932, r359965
r359924:
Those functions are here to help fdt mmc controller drivers to parse
the dts to find the supported speeds and the regulators.
Not all DTS have every settings properly defined so host controller
will still have to add some caps themselves.
It also add a mmc_fdt_gpio_setup function which will read the cd-gpios
property and register it as the CD pin.
If the pin support interrupts one will be registered and the cd_helper
function will be called.
If the pin doesn't support interrupts the internal taskqueue will poll
for change and call the same cd_helper function.
mmc_fdt_gpio_setup will also parse the wp-gpio property and MMC drivers
can know the write-protect pin value by calling the
mmc_fdt_gpio_get_readonly function.
Differential Revision: https://reviews.freebsd.org/D23267
r359925:
arm: allwinner: aw_mmc: Use the mmc_fdt_helper
The fdt properties are now parsed via the help of mmc_fdt_helper functions.
This also adds card detection.
Note that on some boards (like the Pine64) card detection is broken due to
a missing resistor on the cd pin.
Differential Revision: https://reviews.freebsd.org/D23268
r359927:
arm: dwmmc: Use mmc_fdt_helpers
Use the mmc_fdt_parse function instead of parsing everything in the
driver.
r359932:
files: Add mmc_fdt_helpers for mmccam enabled config
X-MFC-With: r359924
r359965:
mmc_fdt_helpers: Do not schedule a card detection is there is no cd gpio
If the fdt node doesn't have a cd-gpios properties or if the node is set
as non-removable we do not init the card detection timeout task as it is
useless so don't schedule it too.
X-MFC-With: r359924
Added:
stable/12/sys/dev/mmc/mmc_fdt_helpers.c
- copied, changed from r359925, head/sys/dev/mmc/mmc_fdt_helpers.c
stable/12/sys/dev/mmc/mmc_fdt_helpers.h
- copied unchanged from r359925, head/sys/dev/mmc/mmc_fdt_helpers.h
Modified:
stable/12/sys/arm/allwinner/aw_mmc.c
stable/12/sys/conf/files
stable/12/sys/dev/mmc/host/dwmmc.c
stable/12/sys/dev/mmc/host/dwmmc_altera.c
stable/12/sys/dev/mmc/host/dwmmc_hisi.c
stable/12/sys/dev/mmc/host/dwmmc_rockchip.c
stable/12/sys/dev/mmc/host/dwmmc_samsung.c
stable/12/sys/dev/mmc/host/dwmmc_var.h
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/arm/allwinner/aw_mmc.c
==============================================================================
--- stable/12/sys/arm/allwinner/aw_mmc.c Fri Jun 19 18:04:41 2020 (r362399)
+++ stable/12/sys/arm/allwinner/aw_mmc.c Fri Jun 19 18:05:14 2020 (r362400)
@@ -41,6 +41,8 @@ __FBSDID("$FreeBSD$");
#include <sys/resource.h>
#include <sys/rman.h>
#include <sys/sysctl.h>
+#include <sys/queue.h>
+#include <sys/taskqueue.h>
#include <machine/bus.h>
@@ -49,6 +51,7 @@ __FBSDID("$FreeBSD$");
#include <dev/mmc/bridge.h>
#include <dev/mmc/mmcbrvar.h>
+#include <dev/mmc/mmc_fdt_helpers.h>
#include <arm/allwinner/aw_mmc.h>
#include <dev/extres/clk/clk.h>
@@ -122,6 +125,7 @@ struct aw_mmc_softc {
int aw_timeout;
struct callout aw_timeoutc;
struct mmc_host aw_host;
+ struct mmc_fdt_helper mmc_helper;
#ifdef MMCCAM
union ccb * ccb;
struct cam_devq * devq;
@@ -136,9 +140,8 @@ struct aw_mmc_softc {
uint32_t aw_intr;
uint32_t aw_intr_wait;
void * aw_intrhand;
- regulator_t aw_reg_vmmc;
- regulator_t aw_reg_vqmmc;
unsigned int aw_clock;
+ device_t child;
/* Fields required for DMA access. */
bus_addr_t aw_dma_desc_phys;
@@ -164,6 +167,7 @@ static int aw_mmc_reset(struct aw_mmc_softc *);
static int aw_mmc_init(struct aw_mmc_softc *);
static void aw_mmc_intr(void *);
static int aw_mmc_update_clock(struct aw_mmc_softc *, uint32_t);
+static void aw_mmc_helper_cd_handler(device_t, bool);
static void aw_mmc_print_error(uint32_t);
static int aw_mmc_update_ios(device_t, device_t);
@@ -380,6 +384,40 @@ aw_mmc_cam_request(struct aw_mmc_softc *sc, union ccb
}
#endif /* MMCCAM */
+static void
+aw_mmc_helper_cd_handler(device_t dev, bool present)
+{
+ struct aw_mmc_softc *sc;
+
+ sc = device_get_softc(dev);
+ AW_MMC_LOCK(sc);
+ if (present) {
+ if (sc->child == NULL) {
+ if (bootverbose)
+ device_printf(sc->aw_dev, "Card inserted\n");
+
+ sc->child = device_add_child(sc->aw_dev, "mmc", -1);
+ AW_MMC_UNLOCK(sc);
+ if (sc->child) {
+ device_set_ivars(sc->child, sc);
+ (void)device_probe_and_attach(sc->child);
+ }
+ } else
+ AW_MMC_UNLOCK(sc);
+ } else {
+ /* Card isn't present, detach if necessary */
+ if (sc->child != NULL) {
+ if (bootverbose)
+ device_printf(sc->aw_dev, "Card removed\n");
+
+ AW_MMC_UNLOCK(sc);
+ device_delete_child(sc->aw_dev, sc->child);
+ sc->child = NULL;
+ } else
+ AW_MMC_UNLOCK(sc);
+ }
+}
+
static int
aw_mmc_probe(device_t dev)
{
@@ -397,15 +435,11 @@ aw_mmc_probe(device_t dev)
static int
aw_mmc_attach(device_t dev)
{
- device_t child;
struct aw_mmc_softc *sc;
struct sysctl_ctx_list *ctx;
struct sysctl_oid_list *tree;
- uint32_t bus_width, max_freq;
- phandle_t node;
int error;
- node = ofw_bus_get_node(dev);
sc = device_get_softc(dev);
sc->aw_dev = dev;
@@ -419,7 +453,7 @@ aw_mmc_attach(device_t dev)
return (ENXIO);
}
if (bus_setup_intr(dev, sc->aw_res[AW_MMC_IRQRES],
- INTR_TYPE_MISC | INTR_MPSAFE, NULL, aw_mmc_intr, sc,
+ INTR_TYPE_NET | INTR_MPSAFE, NULL, aw_mmc_intr, sc,
&sc->aw_intrhand)) {
bus_release_resources(dev, aw_mmc_res_spec, sc->aw_res);
device_printf(dev, "cannot setup interrupt handler\n");
@@ -483,47 +517,15 @@ aw_mmc_attach(device_t dev)
goto fail;
}
- if (OF_getencprop(node, "bus-width", &bus_width, sizeof(uint32_t)) <= 0)
- bus_width = 4;
-
- if (regulator_get_by_ofw_property(dev, 0, "vmmc-supply",
- &sc->aw_reg_vmmc) == 0) {
- if (bootverbose)
- device_printf(dev, "vmmc-supply regulator found\n");
- }
- if (regulator_get_by_ofw_property(dev, 0, "vqmmc-supply",
- &sc->aw_reg_vqmmc) == 0 && bootverbose) {
- if (bootverbose)
- device_printf(dev, "vqmmc-supply regulator found\n");
- }
-
+ /* Set some defaults for freq and supported mode */
sc->aw_host.f_min = 400000;
-
- if (OF_getencprop(node, "max-frequency", &max_freq,
- sizeof(uint32_t)) <= 0)
- max_freq = 52000000;
- sc->aw_host.f_max = max_freq;
-
+ sc->aw_host.f_max = 52000000;
sc->aw_host.host_ocr = MMC_OCR_320_330 | MMC_OCR_330_340;
- sc->aw_host.caps = MMC_CAP_HSPEED | MMC_CAP_UHS_SDR12 |
- MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50 |
- MMC_CAP_UHS_DDR50 | MMC_CAP_MMC_DDR52;
+ sc->aw_host.caps |= MMC_CAP_HSPEED | MMC_CAP_SIGNALING_330;
+ mmc_fdt_parse(dev, 0, &sc->mmc_helper, &sc->aw_host);
+ mmc_fdt_gpio_setup(dev, 0, &sc->mmc_helper, aw_mmc_helper_cd_handler);
- if (sc->aw_reg_vqmmc != NULL) {
- if (regulator_check_voltage(sc->aw_reg_vqmmc, 1800000) == 0)
- sc->aw_host.caps |= MMC_CAP_SIGNALING_180;
- if (regulator_check_voltage(sc->aw_reg_vqmmc, 3300000) == 0)
- sc->aw_host.caps |= MMC_CAP_SIGNALING_330;
- } else
- sc->aw_host.caps |= MMC_CAP_SIGNALING_330;
-
- if (bus_width >= 4)
- sc->aw_host.caps |= MMC_CAP_4_BIT_DATA;
- if (bus_width >= 8)
- sc->aw_host.caps |= MMC_CAP_8_BIT_DATA;
-
#ifdef MMCCAM
- child = NULL; /* Not used by MMCCAM, need to silence compiler warnings */
sc->ccb = NULL;
if ((sc->devq = cam_simq_alloc(1)) == NULL) {
goto fail;
@@ -550,18 +552,8 @@ aw_mmc_attach(device_t dev)
}
mtx_unlock(&sc->sim_mtx);
-#else /* !MMCCAM */
- child = device_add_child(dev, "mmc", -1);
- if (child == NULL) {
- device_printf(dev, "attaching MMC bus failed!\n");
- goto fail;
- }
- if (device_probe_and_attach(child) != 0) {
- device_printf(dev, "attaching MMC child failed!\n");
- device_delete_child(dev, child);
- goto fail;
- }
#endif /* MMCCAM */
+
return (0);
fail:
@@ -1314,7 +1306,7 @@ aw_mmc_switch_vccq(device_t bus, device_t child)
sc = device_get_softc(bus);
- if (sc->aw_reg_vqmmc == NULL)
+ if (sc->mmc_helper.vqmmc_supply == NULL)
return EOPNOTSUPP;
switch (sc->aw_host.ios.vccq) {
@@ -1328,7 +1320,7 @@ aw_mmc_switch_vccq(device_t bus, device_t child)
return EINVAL;
}
- err = regulator_set_voltage(sc->aw_reg_vqmmc, uvolt, uvolt);
+ err = regulator_set_voltage(sc->mmc_helper.vqmmc_supply, uvolt, uvolt);
if (err != 0) {
device_printf(sc->aw_dev,
"Cannot set vqmmc to %d<->%d\n",
@@ -1373,10 +1365,10 @@ aw_mmc_update_ios(device_t bus, device_t child)
if (bootverbose)
device_printf(sc->aw_dev, "Powering down sd/mmc\n");
- if (sc->aw_reg_vmmc)
- regulator_disable(sc->aw_reg_vmmc);
- if (sc->aw_reg_vqmmc)
- regulator_disable(sc->aw_reg_vqmmc);
+ if (sc->mmc_helper.vmmc_supply)
+ regulator_disable(sc->mmc_helper.vmmc_supply);
+ if (sc->mmc_helper.vqmmc_supply)
+ regulator_disable(sc->mmc_helper.vqmmc_supply);
aw_mmc_reset(sc);
break;
@@ -1384,10 +1376,10 @@ aw_mmc_update_ios(device_t bus, device_t child)
if (bootverbose)
device_printf(sc->aw_dev, "Powering up sd/mmc\n");
- if (sc->aw_reg_vmmc)
- regulator_enable(sc->aw_reg_vmmc);
- if (sc->aw_reg_vqmmc)
- regulator_enable(sc->aw_reg_vqmmc);
+ if (sc->mmc_helper.vmmc_supply)
+ regulator_enable(sc->mmc_helper.vmmc_supply);
+ if (sc->mmc_helper.vqmmc_supply)
+ regulator_enable(sc->mmc_helper.vqmmc_supply);
aw_mmc_init(sc);
break;
};
@@ -1463,8 +1455,11 @@ aw_mmc_update_ios(device_t bus, device_t child)
static int
aw_mmc_get_ro(device_t bus, device_t child)
{
+ struct aw_mmc_softc *sc;
- return (0);
+ sc = device_get_softc(bus);
+
+ return (mmc_fdt_gpio_get_readonly(&sc->mmc_helper));
}
static int
Modified: stable/12/sys/conf/files
==============================================================================
--- stable/12/sys/conf/files Fri Jun 19 18:04:41 2020 (r362399)
+++ stable/12/sys/conf/files Fri Jun 19 18:05:14 2020 (r362400)
@@ -2473,6 +2473,7 @@ dev/mmc/mmc.c optional mmc !mmccam
dev/mmc/mmcbr_if.m standard
dev/mmc/mmcbus_if.m standard
dev/mmc/mmcsd.c optional mmcsd !mmccam
+dev/mmc/mmc_fdt_helpers.c optional mmc fdt | mmccam fdt
dev/mmcnull/mmcnull.c optional mmcnull
dev/mn/if_mn.c optional mn pci
dev/mpr/mpr.c optional mpr
Modified: stable/12/sys/dev/mmc/host/dwmmc.c
==============================================================================
--- stable/12/sys/dev/mmc/host/dwmmc.c Fri Jun 19 18:04:41 2020 (r362399)
+++ stable/12/sys/dev/mmc/host/dwmmc.c Fri Jun 19 18:05:14 2020 (r362400)
@@ -48,6 +48,7 @@ __FBSDID("$FreeBSD$");
#include <dev/mmc/bridge.h>
#include <dev/mmc/mmcbrvar.h>
+#include <dev/mmc/mmc_fdt_helpers.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
@@ -446,7 +447,6 @@ dwmmc_card_task(void *arg, int pending __unused)
}
} else
DWMMC_UNLOCK(sc);
-
} else {
/* Card isn't present, detach if necessary */
if (sc->child != NULL) {
@@ -466,7 +466,7 @@ parse_fdt(struct dwmmc_softc *sc)
{
pcell_t dts_value[3];
phandle_t node;
- uint32_t bus_hz = 0, bus_width;
+ uint32_t bus_hz = 0;
int len;
#ifdef EXT_RESOURCES
int error;
@@ -475,18 +475,13 @@ parse_fdt(struct dwmmc_softc *sc)
if ((node = ofw_bus_get_node(sc->dev)) == -1)
return (ENXIO);
- /* bus-width */
- if (OF_getencprop(node, "bus-width", &bus_width, sizeof(uint32_t)) <= 0)
- bus_width = 4;
- if (bus_width >= 4)
- sc->host.caps |= MMC_CAP_4_BIT_DATA;
- if (bus_width >= 8)
- sc->host.caps |= MMC_CAP_8_BIT_DATA;
+ /* Set some defaults for freq and supported mode */
+ sc->host.f_min = 400000;
+ sc->host.f_max = 200000000;
+ sc->host.host_ocr = MMC_OCR_320_330 | MMC_OCR_330_340;
+ sc->host.caps = MMC_CAP_HSPEED | MMC_CAP_SIGNALING_330;
+ mmc_fdt_parse(sc->dev, node, &sc->mmc_helper, &sc->host);
- /* max-frequency */
- if (OF_getencprop(node, "max-frequency", &sc->host.f_max, sizeof(uint32_t)) <= 0)
- sc->host.f_max = 200000000;
-
/* fifo-depth */
if ((len = OF_getproplen(node, "fifo-depth")) > 0) {
OF_getencprop(node, "fifo-depth", dts_value, len);
@@ -721,11 +716,6 @@ dwmmc_attach(device_t dev)
DWMMC_ERR_FLAGS |
SDMMC_INTMASK_CD));
WRITE4(sc, SDMMC_CTRL, SDMMC_CTRL_INT_ENABLE);
-
- sc->host.f_min = 400000;
- sc->host.host_ocr = MMC_OCR_320_330 | MMC_OCR_330_340;
- sc->host.caps |= MMC_CAP_HSPEED;
- sc->host.caps |= MMC_CAP_SIGNALING_330;
TASK_INIT(&sc->card_task, 0, dwmmc_card_task, sc);
TIMEOUT_TASK_INIT(taskqueue_swi_giant, &sc->card_delayed_task, 0,
Modified: stable/12/sys/dev/mmc/host/dwmmc_altera.c
==============================================================================
--- stable/12/sys/dev/mmc/host/dwmmc_altera.c Fri Jun 19 18:04:41 2020 (r362399)
+++ stable/12/sys/dev/mmc/host/dwmmc_altera.c Fri Jun 19 18:05:14 2020 (r362400)
@@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$");
#include <machine/bus.h>
#include <dev/mmc/bridge.h>
+#include <dev/mmc/mmc_fdt_helpers.h>
#include <dev/ofw/ofw_bus_subr.h>
Modified: stable/12/sys/dev/mmc/host/dwmmc_hisi.c
==============================================================================
--- stable/12/sys/dev/mmc/host/dwmmc_hisi.c Fri Jun 19 18:04:41 2020 (r362399)
+++ stable/12/sys/dev/mmc/host/dwmmc_hisi.c Fri Jun 19 18:05:14 2020 (r362400)
@@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$");
#include <machine/bus.h>
#include <dev/mmc/bridge.h>
+#include <dev/mmc/mmc_fdt_helpers.h>
#include <dev/ofw/ofw_bus_subr.h>
Modified: stable/12/sys/dev/mmc/host/dwmmc_rockchip.c
==============================================================================
--- stable/12/sys/dev/mmc/host/dwmmc_rockchip.c Fri Jun 19 18:04:41 2020 (r362399)
+++ stable/12/sys/dev/mmc/host/dwmmc_rockchip.c Fri Jun 19 18:05:14 2020 (r362400)
@@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$");
#include <machine/bus.h>
#include <dev/mmc/bridge.h>
+#include <dev/mmc/mmc_fdt_helpers.h>
#include <dev/ofw/ofw_bus_subr.h>
Modified: stable/12/sys/dev/mmc/host/dwmmc_samsung.c
==============================================================================
--- stable/12/sys/dev/mmc/host/dwmmc_samsung.c Fri Jun 19 18:04:41 2020 (r362399)
+++ stable/12/sys/dev/mmc/host/dwmmc_samsung.c Fri Jun 19 18:05:14 2020 (r362400)
@@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$");
#include <machine/bus.h>
#include <dev/mmc/bridge.h>
+#include <dev/mmc/mmc_fdt_helpers.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
Modified: stable/12/sys/dev/mmc/host/dwmmc_var.h
==============================================================================
--- stable/12/sys/dev/mmc/host/dwmmc_var.h Fri Jun 19 18:04:41 2020 (r362399)
+++ stable/12/sys/dev/mmc/host/dwmmc_var.h Fri Jun 19 18:05:14 2020 (r362400)
@@ -52,6 +52,7 @@ struct dwmmc_softc {
device_t dev;
void *intr_cookie;
struct mmc_host host;
+ struct mmc_fdt_helper mmc_helper;
struct mtx sc_mtx;
struct mmc_request *req;
struct mmc_command *curcmd;
Copied and modified: stable/12/sys/dev/mmc/mmc_fdt_helpers.c (from r359925, head/sys/dev/mmc/mmc_fdt_helpers.c)
==============================================================================
--- head/sys/dev/mmc/mmc_fdt_helpers.c Tue Apr 14 16:34:13 2020 (r359925, copy source)
+++ stable/12/sys/dev/mmc/mmc_fdt_helpers.c Fri Jun 19 18:05:14 2020 (r362400)
@@ -217,7 +217,7 @@ cd_card_task(void *arg, int pending __unused)
/*
* Card detect setup.
*/
-static void
+static bool
cd_setup(struct mmc_fdt_helper *helper, phandle_t node)
{
int pincaps;
@@ -233,7 +233,7 @@ cd_setup(struct mmc_fdt_helper *helper, phandle_t node
helper->cd_disabled = true;
if (bootverbose)
device_printf(dev, "Non-removable media\n");
- return;
+ return (false);
}
/*
@@ -246,14 +246,14 @@ cd_setup(struct mmc_fdt_helper *helper, phandle_t node
*/
if (gpio_pin_get_by_ofw_property(dev, node, "cd-gpios",
&helper->cd_pin))
- return;
+ return (false);
if (gpio_pin_getcaps(helper->cd_pin, &pincaps) != 0 ||
!(pincaps & GPIO_PIN_INPUT)) {
device_printf(dev, "Cannot read card-detect gpio pin; "
"setting card-always-present flag.\n");
helper->cd_disabled = true;
- return;
+ return (false);
}
/*
@@ -313,6 +313,8 @@ without_interrupts:
device_get_nameunit(helper->cd_pin->dev), helper->cd_pin->pin,
cd_mode_str);
}
+
+ return (true);
}
/*
@@ -354,14 +356,16 @@ mmc_fdt_gpio_setup(device_t dev, phandle_t node, struc
helper->dev = dev;
helper->cd_handler = handler;
- cd_setup(helper, node);
wp_setup(helper, node);
- /*
- * Schedule a card detection
- */
- taskqueue_enqueue_timeout_sbt(taskqueue_swi_giant,
- &helper->cd_delayed_task, mstosbt(500), 0, C_PREL(2));
+ if (cd_setup(helper, node)) {
+ /*
+ * Schedule a card detection
+ */
+ taskqueue_enqueue_timeout_sbt(taskqueue_swi_giant,
+ &helper->cd_delayed_task, mstosbt(500), 0, C_PREL(2));
+ }
+
return (0);
}
Copied: stable/12/sys/dev/mmc/mmc_fdt_helpers.h (from r359925, head/sys/dev/mmc/mmc_fdt_helpers.h)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/12/sys/dev/mmc/mmc_fdt_helpers.h Fri Jun 19 18:05:14 2020 (r362400, copy of r359925, head/sys/dev/mmc/mmc_fdt_helpers.h)
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2019 Emmanuel Vadot <manu at freebsd.org>
+ * Copyright (c) 2017 Ian Lepore <ian at 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _MMC_FDT_HELPERS_H_
+#define _MMC_FDT_HELPERS_H_
+
+#include <dev/gpio/gpiobusvar.h>
+#include <dev/ofw/ofw_bus.h>
+
+#ifdef EXT_RESOURCES
+#include <dev/extres/regulator/regulator.h>
+#endif
+
+struct mmc_fdt_helper {
+ device_t dev;
+ gpio_pin_t wp_pin;
+ gpio_pin_t cd_pin;
+ void * cd_ihandler;
+ struct resource * cd_ires;
+ int cd_irid;
+ void (*cd_handler)(device_t, bool);
+ struct timeout_task cd_delayed_task;
+ bool cd_disabled;
+ bool wp_disabled;
+ bool cd_present;
+ uint32_t props;
+#define MMC_PROP_BROKEN_CD (1 << 0)
+#define MMC_PROP_NON_REMOVABLE (1 << 1)
+#define MMC_PROP_WP_INVERTED (1 << 2)
+#define MMC_PROP_CD_INVERTED (1 << 3)
+#define MMC_PROP_DISABLE_WP (1 << 4)
+#define MMC_PROP_NO_SDIO (1 << 5)
+#define MMC_PROP_NO_SD (1 << 6)
+#define MMC_PROP_NO_MMC (1 << 7)
+
+#ifdef EXT_RESOURCES
+ regulator_t vmmc_supply;
+ regulator_t vqmmc_supply;
+#endif
+};
+
+typedef void (*mmc_fdt_cd_handler)(device_t dev, bool present);
+
+int mmc_fdt_parse(device_t dev, phandle_t node, struct mmc_fdt_helper *helper, struct mmc_host *host);
+int mmc_fdt_gpio_setup(device_t dev, phandle_t node, struct mmc_fdt_helper *helper, mmc_fdt_cd_handler handler);
+void mmc_fdt_gpio_teardown(struct mmc_fdt_helper *helper);
+bool mmc_fdt_gpio_get_present(struct mmc_fdt_helper *helper);
+bool mmc_fdt_gpio_get_readonly(struct mmc_fdt_helper *helper);
+
+#endif
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