[src/trunk]: src/sys/dev/sdmmc Add a vendor callback for setting signal voltage.

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

details:   https://anonhg.NetBSD.org/src/rev/01cd34ba50d7
branches:  trunk
changeset: 353183:01cd34ba50d7
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Apr 22 21:49:41 2017 +0000

description:
Add a vendor callback for setting signal voltage.

diffstat:

 sys/dev/sdmmc/sdhc.c    |  22 ++++++++++++++++++----
 sys/dev/sdmmc/sdhcvar.h |   3 ++-
 2 files changed, 20 insertions(+), 5 deletions(-)

diffs (78 lines):

diff -r 547e4918166a -r 01cd34ba50d7 sys/dev/sdmmc/sdhc.c
--- a/sys/dev/sdmmc/sdhc.c      Sat Apr 22 21:48:56 2017 +0000
+++ b/sys/dev/sdmmc/sdhc.c      Sat Apr 22 21:49:41 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sdhc.c,v 1.99 2017/02/17 10:51:48 nonaka Exp $ */
+/*     $NetBSD: sdhc.c,v 1.100 2017/04/22 21:49:41 jmcneill Exp $      */
 /*     $OpenBSD: sdhc.c,v 1.25 2009/01/13 19:44:20 grange Exp $        */
 
 /*
@@ -23,7 +23,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sdhc.c,v 1.99 2017/02/17 10:51:48 nonaka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sdhc.c,v 1.100 2017/04/22 21:49:41 jmcneill Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_sdmmc.h"
@@ -1342,6 +1342,7 @@
 sdhc_signal_voltage(sdmmc_chipset_handle_t sch, int signal_voltage)
 {
        struct sdhc_host *hp = (struct sdhc_host *)sch;
+       int error = 0;
 
        if (hp->specver < SDHC_SPEC_VERS_300)
                return EINVAL;
@@ -1349,19 +1350,32 @@
        mutex_enter(&hp->intr_lock);
        switch (signal_voltage) {
        case SDMMC_SIGNAL_VOLTAGE_180:
+               if (hp->sc->sc_vendor_signal_voltage != NULL) {
+                       error = hp->sc->sc_vendor_signal_voltage(hp->sc,
+                           signal_voltage);
+                       if (error != 0)
+                               break;
+               }
                if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC))
                        HSET2(hp, SDHC_HOST_CTL2, SDHC_1_8V_SIGNAL_EN);
                break;
        case SDMMC_SIGNAL_VOLTAGE_330:
                if (!ISSET(hp->sc->sc_flags, SDHC_FLAG_USDHC))
                        HCLR2(hp, SDHC_HOST_CTL2, SDHC_1_8V_SIGNAL_EN);
+               if (hp->sc->sc_vendor_signal_voltage != NULL) {
+                       error = hp->sc->sc_vendor_signal_voltage(hp->sc,
+                           signal_voltage);
+                       if (error != 0)
+                               break;
+               }
                break;
        default:
-               return EINVAL;
+               error = EINVAL;
+               break;
        }
        mutex_exit(&hp->intr_lock);
 
-       return 0;
+       return error;
 }
 
 /*
diff -r 547e4918166a -r 01cd34ba50d7 sys/dev/sdmmc/sdhcvar.h
--- a/sys/dev/sdmmc/sdhcvar.h   Sat Apr 22 21:48:56 2017 +0000
+++ b/sys/dev/sdmmc/sdhcvar.h   Sat Apr 22 21:49:41 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sdhcvar.h,v 1.28 2017/02/17 10:51:48 nonaka Exp $      */
+/*     $NetBSD: sdhcvar.h,v 1.29 2017/04/22 21:49:41 jmcneill Exp $    */
 /*     $OpenBSD: sdhcvar.h,v 1.3 2007/09/06 08:01:01 jsg Exp $ */
 
 /*
@@ -74,6 +74,7 @@
        int (*sc_vendor_bus_clock)(struct sdhc_softc *, int);
        int (*sc_vendor_transfer_data_dma)(struct sdhc_softc *, struct sdmmc_command *);
        void (*sc_vendor_hw_reset)(struct sdhc_softc *, struct sdhc_host *);
+       int (*sc_vendor_signal_voltage)(struct sdhc_softc *, int);
 };
 
 /* Host controller functions called by the attachment driver. */