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Add support for card detect and write protect gpio pins to Tegra SDHCI.

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This commit is contained in:
Michal Meloun 2017-03-05 15:34:32 +00:00
parent c8453e5bf4
commit d457839bc8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=314703
1 changed files with 23 additions and 13 deletions
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36
sys/arm/nvidia/tegra_sdhci.c
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@ -36,6 +36,7 @@ __FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/bus.h>
#include <sys/callout.h>
#include <sys/gpio.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
@ -60,6 +61,7 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/sdhci/sdhci.h>
#include <dev/sdhci/sdhci_fdt_gpio.h>
#include "sdhci_if.h"
@ -107,9 +109,8 @@ struct tegra_sdhci_softc {
uint32_t max_clk; /* Max possible freq */
clk_t clk;
hwreset_t reset;
gpio_pin_t gpio_cd;
gpio_pin_t gpio_wp;
gpio_pin_t gpio_power;
struct sdhci_fdt_gpio *gpio;
int force_card_present;
struct sdhci_slot slot;
@ -215,10 +216,19 @@ tegra_sdhci_intr(void *arg)
}
static int
tegra_generic_get_ro(device_t brdev, device_t reqdev)
tegra_sdhci_get_ro(device_t brdev, device_t reqdev)
{
struct tegra_sdhci_softc *sc = device_get_softc(brdev);
return (0);
return (sdhci_fdt_gpio_get_readonly(sc->gpio));
}
static bool
tegra_sdhci_get_card_present(device_t dev, struct sdhci_slot *slot)
{
struct tegra_sdhci_softc *sc = device_get_softc(dev);
return (sdhci_fdt_gpio_get_present(sc->gpio));
}
static int
@ -300,9 +310,7 @@ tegra_sdhci_attach(device_t dev)
goto fail;
}
gpio_pin_get_by_ofw_property(sc->dev, node, "cd-gpios", &sc->gpio_cd);
gpio_pin_get_by_ofw_property(sc->dev, node, "power-gpios", &sc->gpio_power);
gpio_pin_get_by_ofw_property(sc->dev, node, "wp-gpios", &sc->gpio_wp);
rv = clk_get_by_ofw_index(dev, 0, 0, &sc->clk);
if (rv != 0) {
@ -374,6 +382,8 @@ tegra_sdhci_attach(device_t dev)
goto fail;
}
sc->gpio = sdhci_fdt_gpio_setup(sc->dev, &sc->slot);
bus_generic_probe(dev);
bus_generic_attach(dev);
@ -382,18 +392,16 @@ tegra_sdhci_attach(device_t dev)
return (0);
fail:
if (sc->gpio_cd != NULL)
gpio_pin_release(sc->gpio_cd);
if (sc->gpio_wp != NULL)
gpio_pin_release(sc->gpio_wp);
if (sc->gpio != NULL)
sdhci_fdt_gpio_teardown(sc->gpio);
if (sc->intr_cookie != NULL)
bus_teardown_intr(dev, sc->irq_res, sc->intr_cookie);
if (sc->gpio_power != NULL)
gpio_pin_release(sc->gpio_power);
if (sc->clk != NULL)
clk_release(sc->clk);
if (sc->reset != NULL)
hwreset_release(sc->reset);
if (sc->intr_cookie != NULL)
bus_teardown_intr(dev, sc->irq_res, sc->intr_cookie);
if (sc->irq_res != NULL)
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
if (sc->mem_res != NULL)
@ -409,6 +417,7 @@ tegra_sdhci_detach(device_t dev)
struct sdhci_slot *slot = &sc->slot;
bus_generic_detach(dev);
sdhci_fdt_gpio_teardown(sc->gpio);
clk_release(sc->clk);
bus_teardown_intr(dev, sc->irq_res, sc->intr_cookie);
bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq_res),
@ -434,7 +443,7 @@ static device_method_t tegra_sdhci_methods[] = {
/* MMC bridge interface */
DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios),
DEVMETHOD(mmcbr_request, sdhci_generic_request),
DEVMETHOD(mmcbr_get_ro, tegra_generic_get_ro),
DEVMETHOD(mmcbr_get_ro, tegra_sdhci_get_ro),
DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host),
DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host),
@ -447,6 +456,7 @@ static device_method_t tegra_sdhci_methods[] = {
DEVMETHOD(sdhci_write_2, tegra_sdhci_write_2),
DEVMETHOD(sdhci_write_4, tegra_sdhci_write_4),
DEVMETHOD(sdhci_write_multi_4, tegra_sdhci_write_multi_4),
DEVMETHOD(sdhci_get_card_present, tegra_sdhci_get_card_present),
DEVMETHOD_END
};