[src/trunk]: src/sys/arch/arm/imx/fdt Support write protect gpio pin.

[hkenken <hkenken%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/bed55913c008
branches:  trunk
changeset: 964834:bed55913c008
user:      hkenken <hkenken%NetBSD.org@localhost>
date:      Mon Aug 19 03:48:41 2019 +0000

description:
Support write protect gpio pin.

diffstat:

 sys/arch/arm/imx/fdt/imx6_sdhc.c |  32 ++++++++++++++++++++++++--------
 1 files changed, 24 insertions(+), 8 deletions(-)

diffs (94 lines):

diff -r 47b1de8b22f4 -r bed55913c008 sys/arch/arm/imx/fdt/imx6_sdhc.c
--- a/sys/arch/arm/imx/fdt/imx6_sdhc.c  Mon Aug 19 03:45:51 2019 +0000
+++ b/sys/arch/arm/imx/fdt/imx6_sdhc.c  Mon Aug 19 03:48:41 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: imx6_sdhc.c,v 1.1 2019/07/24 13:12:33 hkenken Exp $    */
+/*     $NetBSD: imx6_sdhc.c,v 1.2 2019/08/19 03:48:41 hkenken Exp $    */
 /*-
  * Copyright (c) 2019 Genetec Corporation.  All rights reserved.
  * Written by Hashimoto Kenichi for Genetec Corporation.
@@ -25,7 +25,7 @@
  * SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: imx6_sdhc.c,v 1.1 2019/07/24 13:12:33 hkenken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: imx6_sdhc.c,v 1.2 2019/08/19 03:48:41 hkenken Exp $");
 
 #include "opt_fdt.h"
 
@@ -50,6 +50,7 @@
 static void imx6_sdhc_attach(device_t, device_t, void *);
 
 static int imx6_sdhc_card_detect(struct sdhc_softc *);
+static int imx6_sdhc_write_protect(struct sdhc_softc *);
 
 struct imx6_sdhc_softc {
        struct sdhc_softc sc_sdhc;
@@ -64,6 +65,7 @@
        struct clk              *sc_clk_per;
 
        struct fdtbus_gpio_pin  *sc_pin_cd;
+       struct fdtbus_gpio_pin  *sc_pin_wp;
 };
 
 CFATTACH_DECL_NEW(imx6_sdhc, sizeof(struct imx6_sdhc_softc),
@@ -116,13 +118,12 @@
            SDHC_FLAG_NO_PWR0 |
            SDHC_FLAG_HAVE_DVS |
            SDHC_FLAG_32BIT_ACCESS |
-           SDHC_FLAG_8BIT_MODE |
            SDHC_FLAG_USE_ADMA2 |
            SDHC_FLAG_USDHC;
 
-       if (bus_width == 8) {
+       if (bus_width == 8)
                sc->sc_sdhc.sc_flags |= SDHC_FLAG_8BIT_MODE;
-       }
+
        sc->sc_sdhc.sc_host = &sc->sc_host;
 
        sc->sc_bst = faa->faa_bst;
@@ -135,12 +136,17 @@
 
        sc->sc_pin_cd = fdtbus_gpio_acquire(faa->faa_phandle,
            "cd-gpios", GPIO_PIN_INPUT);
-
        if (sc->sc_pin_cd) {
                sc->sc_sdhc.sc_vendor_card_detect = imx6_sdhc_card_detect;
                sc->sc_sdhc.sc_flags |= SDHC_FLAG_POLL_CARD_DET;
        }
 
+       sc->sc_pin_wp = fdtbus_gpio_acquire(faa->faa_phandle,
+           "wp-gpios", GPIO_PIN_INPUT);
+       if (sc->sc_pin_wp) {
+               sc->sc_sdhc.sc_vendor_write_protect = imx6_sdhc_write_protect;
+       }
+
        error = clk_enable(sc->sc_clk_per);
        if (error) {
                aprint_error(": couldn't enable clock: %d\n", error);
@@ -160,8 +166,8 @@
                return;
        }
 
-       sc->sc_ih = fdtbus_intr_establish(faa->faa_phandle, 0, IPL_SDMMC, 0,
-           sdhc_intr, &sc->sc_sdhc);
+       sc->sc_ih = fdtbus_intr_establish(faa->faa_phandle, 0, IPL_SDMMC,
+           FDT_INTR_MPSAFE, sdhc_intr, &sc->sc_sdhc);
        if (sc->sc_ih == NULL) {
                aprint_error_dev(self, "couldn't establish interrupt on %s\n",
                    intrstr);
@@ -189,3 +195,13 @@
        return fdtbus_gpio_read(sc->sc_pin_cd);
 }
 
+static int
+imx6_sdhc_write_protect(struct sdhc_softc *ssc)
+{
+       struct imx6_sdhc_softc *sc = device_private(ssc->sc_dev);
+
+       KASSERT(sc->sc_pin_wp != NULL);
+
+       return fdtbus_gpio_read(sc->sc_pin_wp);
+}
+