From 1eb3eee47c8088771bf295a238f3be29c65983d7 Mon Sep 17 00:00:00 2001
From: jmcneill <jmcneill@NetBSD.org>
Date: Sun, 6 Jan 2002 02:42:45 +0000
Subject: [PATCH] Add basic support for the radio(4) interface.

---
 sys/dev/pci/bktr/bktr_os.c | 75 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 73 insertions(+), 2 deletions(-)

diff --git a/sys/dev/pci/bktr/bktr_os.c b/sys/dev/pci/bktr/bktr_os.c
index 564c2e3a3acf..113c7e0de13b 100644
--- a/sys/dev/pci/bktr/bktr_os.c
+++ b/sys/dev/pci/bktr/bktr_os.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: bktr_os.c,v 1.22 2001/11/13 07:29:37 lukem Exp $	*/
+/*	$NetBSD: bktr_os.c,v 1.23 2002/01/06 02:42:45 jmcneill Exp $	*/
 
 /* FreeBSD: src/sys/dev/bktr/bktr_os.c,v 1.20 2000/10/20 08:16:53 roger Exp */
 
@@ -50,7 +50,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: bktr_os.c,v 1.22 2001/11/13 07:29:37 lukem Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bktr_os.c,v 1.23 2002/01/06 02:42:45 jmcneill Exp $");
 
 #ifdef __FreeBSD__
 #include "bktr.h"
@@ -149,6 +149,7 @@ SYSCTL_INT(_hw_bt848, OID_AUTO, slow_msp_audio, CTLFLAG_RW, &bt848_slow_msp_audi
 #include <sys/poll.h>
 #include <sys/select.h>
 #include <sys/vnode.h>
+#include <sys/radioio.h>
 
 #ifndef __NetBSD__
 #include <vm/vm.h>
@@ -161,6 +162,7 @@ SYSCTL_INT(_hw_bt848, OID_AUTO, slow_msp_audio, CTLFLAG_RW, &bt848_slow_msp_audi
 #include <dev/pci/pcivar.h>
 #include <dev/pci/pcireg.h>
 #include <dev/pci/pcidevs.h>
+#include <dev/radio_if.h>
 
 #define BKTR_DEBUG
 #ifdef BKTR_DEBUG
@@ -1321,6 +1323,19 @@ struct cfdriver bktr_cd = {
 };
 #endif
 
+
+/* for radio(4) */
+int	bktr_get_info(void *, struct radio_info *);
+int	bktr_set_info(void *, struct radio_info *);
+
+struct radio_hw_if bktr_hw_if = {
+	NULL,	/* open */
+	NULL,	/* close */
+	bktr_get_info,
+	bktr_set_info,
+	NULL	/* search */
+};
+
 int
 bktr_probe(parent, match, aux)
 	struct device *parent;
@@ -1502,6 +1517,9 @@ bktr_attach(struct device *parent, struct device *self, void *aux)
         rev = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG) & 0x000000ff;
 
 	common_bktr_attach(bktr, unit, fun, rev);
+
+	/* attach to radio(4) */
+	radio_attach_mi(&bktr_hw_if, bktr, &bktr->bktr_dev);
 }
 
 
@@ -1758,4 +1776,57 @@ bktr_mmap(dev_t dev, off_t offset, int nprot)
 #endif
 }
 
+int
+bktr_set_info(void *v, struct radio_info *ri)
+{
+	struct bktr_softc *sc = v;
+	u_int32_t freq;
+
+	if (ri->mute) {
+		/* mute the audio stream by switching the mux */
+		set_audio(sc, AUDIO_MUTE);
+
+		/* disable drivers on the GPIO port that controls the MUXes */
+		OUTL(sc, BKTR_GPIO_OUT_EN, INL(sc, BKTR_GPIO_OUT_EN) &
+		    ~sc->card.gpio_mux_bits);
+	} else {
+		/* enable drivers on the GPIO port that controls the MUXes */
+		OUTL(sc, BKTR_GPIO_OUT_EN, INL(sc, BKTR_GPIO_OUT_EN) |
+		    sc->card.gpio_mux_bits);
+
+		/* unmute the audio stream */
+		set_audio(sc, AUDIO_UNMUTE);
+		init_audio_devices(sc);
+	}
+
+	freq = ri->freq / 10;
+	set_audio(sc, AUDIO_INTERN); /* use internal audio */
+	temp_mute(sc, TRUE);
+	ri->freq = tv_freq(sc, freq, FM_RADIO_FREQUENCY) * 10;
+	temp_mute(sc, FALSE);
+
+	return (0);
+}
+
+int
+bktr_get_info(void *v, struct radio_info *ri)
+{
+	struct bktr_softc *sc = v;
+	struct TVTUNER *tv = &sc->tuner;
+	int status;
+
+	status = get_tuner_status(sc);
+
+	ri->mute = (int)sc->audio_mute_state ? 1 : 0;
+	ri->stereo = (status & STATUSBIT_STEREO) ? 1 : 0;
+	ri->caps = RADIO_CAPS_DETECT_STEREO | RADIO_CAPS_HW_AFC;
+	ri->freq = tv->frequency * 10;
+	ri->info = (status & STATUSBIT_STEREO) ? RADIO_INFO_STEREO : 0;
+
+	/* not yet supported */
+	ri->volume = ri->rfreq = ri->lock = 0;
+
+	return (0);
+}
+
 #endif /* __NetBSD__ || __OpenBSD__ */