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[src/trunk]: src/sys/arch/macppc add support for the onewire bus found in som...
details: https://anonhg.NetBSD.org/src/rev/9741d6349e87
branches: trunk
changeset: 936912:9741d6349e87
user: macallan <macallan%NetBSD.org@localhost>
date: Sat Aug 08 22:37:19 2020 +0000
description:
add support for the onewire bus found in some macs, namely Quicksilver.
This can be used to read the EEPROM content from Apple Pro speakers, or to
hook up other onewire devices.
diffstat:
sys/arch/macppc/conf/files.macppc | 5 +-
sys/arch/macppc/dev/snapper.c | 116 ++++++++++++++++++++++++++++++++++++-
2 files changed, 113 insertions(+), 8 deletions(-)
diffs (224 lines):
diff -r 463718ebf367 -r 9741d6349e87 sys/arch/macppc/conf/files.macppc
--- a/sys/arch/macppc/conf/files.macppc Sat Aug 08 19:39:28 2020 +0000
+++ b/sys/arch/macppc/conf/files.macppc Sat Aug 08 22:37:19 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.macppc,v 1.114 2020/01/10 06:24:17 macallan Exp $
+# $NetBSD: files.macppc,v 1.115 2020/08/08 22:37:19 macallan Exp $
#
# macppc-specific configuration info
@@ -290,9 +290,10 @@
defflag opt_ki2c.h KI2C_DEBUG
# snapper audio
-device snapper: audiobus
+device snapper: audiobus, onewirebus, onewire, onewire_bitbang
attach snapper at obio
file arch/macppc/dev/snapper.c snapper
+defflag opt_snapper.h SNAPPER_DEBUG
include "arch/powerpc/conf/majors.powerpc"
diff -r 463718ebf367 -r 9741d6349e87 sys/arch/macppc/dev/snapper.c
--- a/sys/arch/macppc/dev/snapper.c Sat Aug 08 19:39:28 2020 +0000
+++ b/sys/arch/macppc/dev/snapper.c Sat Aug 08 22:37:19 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: snapper.c,v 1.54 2020/04/11 01:42:56 macallan Exp $ */
+/* $NetBSD: snapper.c,v 1.55 2020/08/08 22:37:19 macallan Exp $ */
/* Id: snapper.c,v 1.11 2002/10/31 17:42:13 tsubai Exp */
/* Id: i2s.c,v 1.12 2005/01/15 14:32:35 tsubai Exp */
@@ -35,7 +35,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: snapper.c,v 1.54 2020/04/11 01:42:56 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: snapper.c,v 1.55 2020/08/08 22:37:19 macallan Exp $");
#include <sys/param.h>
#include <sys/audioio.h>
@@ -49,13 +49,16 @@
#include <uvm/uvm_extern.h>
#include <dev/i2c/i2cvar.h>
+#include <dev/onewire/onewirevar.h>
#include <machine/autoconf.h>
#include <machine/pio.h>
#include <macppc/dev/deqvar.h>
#include <macppc/dev/obiovar.h>
-//#define SNAPPER_DEBUG
+
+#include "opt_snapper.h"
+
#ifdef SNAPPER_DEBUG
# define DPRINTF printf
#else
@@ -116,6 +119,10 @@
kmutex_t sc_lock;
kmutex_t sc_intr_lock;
+
+ struct onewire_bus sc_ow_bus;
+ device_t sc_ow_dev;
+ int sc_ow_data;
};
static int snapper_match(device_t, struct cfdata *, void *);
@@ -155,6 +162,24 @@
static int tas3004_init(struct snapper_softc *);
static void snapper_init(struct snapper_softc *, int);
+static void snapper_setup_ow(struct snapper_softc *);
+static int snapper_ow_reset(void *);
+static int snapper_ow_read_bit(void *);
+static void snapper_ow_write_bit(void *, int);
+
+static void snapper_bb_rx(void *);
+static void snapper_bb_tx(void *);
+static int snapper_bb_get(void *);
+static void snapper_bb_set(void *, int);
+
+static const struct onewire_bbops snapper_bbops = {
+ snapper_bb_rx,
+ snapper_bb_tx,
+ snapper_bb_get,
+ snapper_bb_set
+};
+
+
static void
snapper_volume(audio_filter_arg_t *arg)
{
@@ -497,7 +522,8 @@
static bus_size_t headphone_mute;
static bus_size_t audio_hw_reset;
static bus_size_t headphone_detect;
-static uint8_t headphone_detect_active = 0;
+static bus_size_t owaddr = -1;
+static uint8_t headphone_detect_active;
/* I2S registers */
@@ -2059,7 +2085,7 @@
gpio = OF_child(gpio);
while (gpio) {
- char name[64], audio_gpio[64];
+ char name[64], audio_gpio[64], sid[64];
int intr[2];
bus_size_t addr;
@@ -2068,6 +2094,7 @@
addr = 0;
OF_getprop(gpio, "name", name, sizeof name);
OF_getprop(gpio, "audio-gpio", audio_gpio, sizeof audio_gpio);
+ OF_getprop(gpio, "one-wire-bus", sid, sizeof sid);
if (OF_getprop(gpio, "AAPL,address", &addr, sizeof addr) == -1)
if (OF_getprop(gpio, "reg", reg, sizeof reg)
== sizeof reg)
@@ -2091,7 +2118,7 @@
/* extint-gpio15 */
if (strcmp(audio_gpio, "headphone-detect") == 0 ||
strcmp(name, "headphone-detect") == 0) {
- uint32_t act;
+ uint32_t act = 0;
headphone_detect = addr;
OF_getprop(gpio, "audio-gpio-active-state", &act, 4);
headphone_detect_active = act;
@@ -2099,6 +2126,10 @@
headphone_detect_intr = intr[0];
}
}
+ /* extint-gpio16 on Quicksilver */
+ if (strcmp(sid, "speaker-id") == 0) {
+ owaddr = addr;
+ }
/* gpio11 (keywest-11) */
if (strcmp(audio_gpio, "audio-hw-reset") == 0 ||
strcmp(name, "hw-reset") == 0)
@@ -2107,6 +2138,8 @@
gpio = OF_peer(gpio);
}
+ if (owaddr != -1) snapper_setup_ow(sc);
+
DPRINTF(" headphone-mute %x\n", headphone_mute);
DPRINTF(" amp-mute %x\n", amp_mute);
DPRINTF(" headphone-detect %x\n", headphone_detect);
@@ -2154,3 +2187,74 @@
sc->mixer[5] = 0;
snapper_write_mixers(sc);
}
+
+static void
+snapper_setup_ow(struct snapper_softc *sc)
+{
+ struct onewirebus_attach_args oba;
+
+ /* Attach 1-Wire bus */
+ sc->sc_ow_bus.bus_cookie = sc;
+ sc->sc_ow_bus.bus_reset = snapper_ow_reset;
+ sc->sc_ow_bus.bus_read_bit = snapper_ow_read_bit;
+ sc->sc_ow_bus.bus_write_bit = snapper_ow_write_bit;
+
+ memset(&oba, 0, sizeof(oba));
+ oba.oba_bus = &sc->sc_ow_bus;
+ sc->sc_ow_dev = config_found(sc->sc_dev, &oba, onewirebus_print);
+
+}
+
+static int
+snapper_ow_reset(void *cookie)
+{
+ return (onewire_bb_reset(&snapper_bbops, cookie));
+}
+
+static int
+snapper_ow_read_bit(void *cookie)
+{
+ return (onewire_bb_read_bit(&snapper_bbops, cookie));
+}
+
+static void
+snapper_ow_write_bit(void *cookie, int bit)
+{
+ onewire_bb_write_bit(&snapper_bbops, cookie, bit);
+}
+
+static void
+snapper_bb_rx(void *cookie)
+{
+ struct snapper_softc *sc = cookie;
+
+ sc->sc_ow_data &= ~GPIO_DDR_OUTPUT;
+ obio_write_1(owaddr, sc->sc_ow_data);
+}
+
+static void
+snapper_bb_tx(void *cookie)
+{
+ struct snapper_softc *sc = cookie;
+
+ sc->sc_ow_data |= GPIO_DDR_OUTPUT;
+ obio_write_1(owaddr, sc->sc_ow_data);
+}
+
+static int snapper_bb_get(void *cookie)
+{
+ int data = (obio_read_1(owaddr) & GPIO_LEVEL) ? 1 : 0;
+ return data;
+}
+
+static void snapper_bb_set(void *cookie, int bit)
+{
+ struct snapper_softc *sc = cookie;
+
+ if (bit) {
+ sc->sc_ow_data |= GPIO_DATA;
+ } else
+ sc->sc_ow_data &= ~GPIO_DATA;
+
+ obio_write_1(owaddr, sc->sc_ow_data);
+}
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