[src/trunk]: src/sys/dev/i2c Add unused tps65217pmic_reg_write() function.

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

details:   https://anonhg.NetBSD.org/src/rev/d0f2a9eed9b7
branches:  trunk
changeset: 792578:d0f2a9eed9b7
user:      jakllsch <jakllsch%NetBSD.org@localhost>
date:      Wed Jan 08 16:45:14 2014 +0000

description:
Add unused tps65217pmic_reg_write() function.

diffstat:

 sys/dev/i2c/tps65217pmic.c |  29 +++++++++++++++++++++++++++--
 1 files changed, 27 insertions(+), 2 deletions(-)

diffs (57 lines):

diff -r d09aefcfa659 -r d0f2a9eed9b7 sys/dev/i2c/tps65217pmic.c
--- a/sys/dev/i2c/tps65217pmic.c        Wed Jan 08 16:11:04 2014 +0000
+++ b/sys/dev/i2c/tps65217pmic.c        Wed Jan 08 16:45:14 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tps65217pmic.c,v 1.7 2013/12/31 14:51:46 skrll Exp $ */
+/*     $NetBSD: tps65217pmic.c,v 1.8 2014/01/08 16:45:14 jakllsch Exp $ */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -35,7 +35,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tps65217pmic.c,v 1.7 2013/12/31 14:51:46 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tps65217pmic.c,v 1.8 2014/01/08 16:45:14 jakllsch Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -131,6 +131,8 @@
 static void tps65217pmic_attach(device_t, device_t, void *);
 
 static uint8_t tps65217pmic_reg_read(struct tps65217pmic_softc *, uint8_t);
+static void tps65217pmic_reg_write(struct tps65217pmic_softc *, uint8_t,
+    uint8_t);
 
 static void tps65217pmic_reg_refresh(struct tps65217pmic_softc *);
 
@@ -606,6 +608,29 @@
        return rv;
 }
 
+static void __unused
+tps65217pmic_reg_write(struct tps65217pmic_softc *sc, uint8_t reg, uint8_t data)
+{
+       uint8_t wbuf[2];
+
+       if (iic_acquire_bus(sc->sc_tag, I2C_F_POLL) != 0) {
+               aprint_error_dev(sc->sc_dev, "cannot acquire bus for write\n");
+               return;
+       }
+
+       wbuf[0] = reg;
+       wbuf[1] = data;
+
+       if (iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP, sc->sc_addr, wbuf,
+           2, NULL, 0, I2C_F_POLL)) {
+               aprint_error_dev(sc->sc_dev, "cannot execute I2C write\n");
+               iic_release_bus(sc->sc_tag, I2C_F_POLL);
+               return;
+       }
+
+       iic_release_bus(sc->sc_tag, I2C_F_POLL);
+}
+
 static void
 tps65217pmic_envsys_register(struct tps65217pmic_softc *sc)
 {