ad1848_commit_settings(): Don't set the speed/format register if the
parameters haven't changed. From PR 3360, by Jason Baker. Also, clean up several overly-complex interfaces.
This commit is contained in:
mycroft
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62852f4d92
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2b72395bfc
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@ -1,4 +1,4 @@
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/* $NetBSD: ad1848.c,v 1.16 1997/03/13 08:34:50 mikel Exp $ */
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/* $NetBSD: ad1848.c,v 1.17 1997/03/19 19:31:15 mycroft Exp $ */
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/*
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* Copyright (c) 1994 John Brezak
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@ -148,8 +148,8 @@ static int ad1848_init_values[] = {
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};
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void ad1848_reset __P((struct ad1848_softc *));
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int ad1848_set_speed __P((struct ad1848_softc *, int));
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int ad1848_set_format __P((struct ad1848_softc *, int, int));
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int ad1848_set_speed __P((struct ad1848_softc *, u_long));
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int ad1848_set_format __P((struct ad1848_softc *, u_int, u_int));
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void ad1848_mute_monitor __P((void *, int));
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static int ad_read __P((struct ad1848_softc *, int));
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@ -495,13 +495,11 @@ ad1848_attach(sc)
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}
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ad1848_reset(sc);
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/* Set default encoding (ULAW) */
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sc->sc_irate = sc->sc_orate = 8000;
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sc->precision = 8;
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sc->channels = 1;
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sc->encoding = AUDIO_ENCODING_ULAW;
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(void) ad1848_set_in_sr(sc, sc->sc_irate);
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(void) ad1848_set_out_sr(sc, sc->sc_orate);
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/* Set default parameters (mono, 8KHz, ULAW) */
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(void) ad1848_set_channels(sc, 1);
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(void) ad1848_set_speed(sc, 8000);
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(void) ad1848_set_format(sc, AUDIO_ENCODING_ULAW, 8);
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(void) ad1848_commit_settings(sc);
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/* Set default gains */
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(void) ad1848_set_rec_gain(sc, &vol_mid);
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@ -914,9 +912,7 @@ ad1848_set_in_sr(addr, sr)
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DPRINTF(("ad1848_set_in_sr: %d\n", sr));
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sc->sc_irate = sc->sc_orate = ad1848_set_speed(sc, sr);
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return(0);
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return (ad1848_set_speed(sc, sr));
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}
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u_long
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@ -925,7 +921,7 @@ ad1848_get_in_sr(addr)
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{
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register struct ad1848_softc *sc = addr;
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return(sc->sc_irate);
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return (sc->speed);
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}
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int
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@ -937,9 +933,7 @@ ad1848_set_out_sr(addr, sr)
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DPRINTF(("ad1848_set_out_sr: %d\n", sr));
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sc->sc_irate = sc->sc_orate = ad1848_set_speed(sc, sr);
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return(0);
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return (ad1848_set_speed(sc, sr));
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}
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u_long
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@ -948,7 +942,7 @@ ad1848_get_out_sr(addr)
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{
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register struct ad1848_softc *sc = addr;
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return(sc->sc_orate);
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return (sc->speed);
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}
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int
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@ -983,29 +977,13 @@ ad1848_query_encoding(addr, fp)
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int
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ad1848_set_encoding(addr, enc)
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void *addr;
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u_int enc;
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u_int encoding;
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{
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register struct ad1848_softc *sc = addr;
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DPRINTF(("ad1848_set_encoding: %d\n", enc));
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DPRINTF(("ad1848_set_encoding: %d\n", encoding));
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if (sc->encoding != AUDIO_ENCODING_PCM8 &&
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sc->encoding != AUDIO_ENCODING_PCM16 &&
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sc->encoding != AUDIO_ENCODING_ALAW &&
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sc->encoding != AUDIO_ENCODING_ULAW) {
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sc->encoding = AUDIO_ENCODING_PCM8;
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return (EINVAL);
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}
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sc->encoding = ad1848_set_format(sc, enc, sc->precision);
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if (sc->encoding == -1) {
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sc->encoding = AUDIO_ENCODING_PCM8;
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return (EINVAL);
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}
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return (0);
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return (ad1848_set_format(sc, encoding, sc->precision));
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}
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int
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@ -1014,27 +992,19 @@ ad1848_get_encoding(addr)
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{
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register struct ad1848_softc *sc = addr;
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return(sc->encoding);
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return (sc->encoding);
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}
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int
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ad1848_set_precision(addr, prec)
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void *addr;
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u_int prec;
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u_int precision;
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{
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register struct ad1848_softc *sc = addr;
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DPRINTF(("ad1848_set_precision: %d\n", prec));
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DPRINTF(("ad1848_set_precision: %d\n", precision));
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sc->encoding = ad1848_set_format(sc, sc->encoding, prec);
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if (sc->encoding == -1) {
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sc->encoding = AUDIO_ENCODING_PCM16;
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sc->precision = 16;
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return (EINVAL);
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}
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sc->precision = prec;
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return (0);
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return (ad1848_set_format(sc, sc->encoding, precision));
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}
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int
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@ -1043,24 +1013,25 @@ ad1848_get_precision(addr)
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{
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register struct ad1848_softc *sc = addr;
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return(sc->precision);
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return (sc->precision);
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}
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int
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ad1848_set_channels(addr, chans)
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void *addr;
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int chans;
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int channels;
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{
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register struct ad1848_softc *sc = addr;
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DPRINTF(("ad1848_set_channels: %d\n", chans));
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DPRINTF(("ad1848_set_channels: %d\n", channels));
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if (chans < 1 || chans > 2)
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return(EINVAL);
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if (channels < 1 || channels > 2)
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return (EINVAL);
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sc->channels = chans;
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sc->channels = channels;
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sc->need_commit = 1;
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return(0);
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return (0);
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}
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int
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@ -1126,7 +1097,7 @@ ad1848_round_blocksize(addr, blk)
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sc->sc_lastcc = -1;
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/* Higher speeds need bigger blocks to avoid popping and silence gaps. */
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if ((sc->sc_orate > 8000 || sc->sc_irate > 8000) && blk < NBPG/2)
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if (sc->speed > 8000 && blk < NBPG/2)
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blk = NBPG/2;
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/* don't try to DMA too much at once, though. */
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if (blk > NBPG)
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@ -1203,7 +1174,12 @@ ad1848_commit_settings(addr)
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struct ad1848_softc *sc = addr;
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int timeout;
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u_char fs;
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int s = splaudio();
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int s;
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if (!sc->need_commit)
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return 0;
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s = splaudio();
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ad1848_mute_monitor(sc, 1);
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@ -1263,6 +1239,7 @@ ad1848_commit_settings(addr)
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splx(s);
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sc->need_commit = 0;
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return 0;
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}
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@ -1294,7 +1271,7 @@ ad1848_reset(sc)
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int
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ad1848_set_speed(sc, arg)
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register struct ad1848_softc *sc;
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int arg;
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u_long arg;
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{
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/*
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* The sampling speed is encoded in the least significant nible of I8. The
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@ -1310,21 +1287,21 @@ ad1848_set_speed(sc, arg)
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} speed_struct;
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static speed_struct speed_table[] = {
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{5510, (0 << 1) | 1},
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{5510, (0 << 1) | 1},
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{6620, (7 << 1) | 1},
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{8000, (0 << 1) | 0},
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{9600, (7 << 1) | 0},
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{11025, (1 << 1) | 1},
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{16000, (1 << 1) | 0},
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{18900, (2 << 1) | 1},
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{22050, (3 << 1) | 1},
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{27420, (2 << 1) | 0},
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{32000, (3 << 1) | 0},
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{33075, (6 << 1) | 1},
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{37800, (4 << 1) | 1},
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{44100, (5 << 1) | 1},
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{48000, (6 << 1) | 0}
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{5510, (0 << 1) | 1},
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{5510, (0 << 1) | 1},
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{6620, (7 << 1) | 1},
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{8000, (0 << 1) | 0},
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{9600, (7 << 1) | 0},
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{11025, (1 << 1) | 1},
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{16000, (1 << 1) | 0},
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{18900, (2 << 1) | 1},
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{22050, (3 << 1) | 1},
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{27420, (2 << 1) | 0},
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{32000, (3 << 1) | 0},
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{33075, (6 << 1) | 1},
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{37800, (4 << 1) | 1},
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{44100, (5 << 1) | 1},
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{48000, (6 << 1) | 0}
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};
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int i, n, selected = -1;
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@ -1358,46 +1335,53 @@ ad1848_set_speed(sc, arg)
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sc->speed = speed_table[selected].speed;
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sc->speed_bits = speed_table[selected].bits;
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sc->need_commit = 1;
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return sc->speed;
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return (0);
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}
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int
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ad1848_set_format(sc, fmt, prec)
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ad1848_set_format(sc, encoding, precision)
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register struct ad1848_softc *sc;
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int fmt, prec;
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u_int encoding, precision;
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{
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static u_char format2bits[] = {
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/* AUDIO_ENCODING_NONE */ 0,
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/* AUDIO_ENCODING_ULAW */ FMT_ULAW >> 5,
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/* AUDIO_ENCODING_ALAW */ FMT_ALAW >> 5,
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/* AUDIO_ENCODING_PCM16 */ FMT_TWOS_COMP >> 5,
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/* AUDIO_ENCODING_PCM8 */ FMT_PCM8 >> 5
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/* AUDIO_ENCODING_PCM8 */ FMT_PCM8 >> 5,
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/* AUDIO_ENCODING_ADPCM */ 0,
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};
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DPRINTF(("ad1848_set_format: fmt=%d prec=%d\n", fmt, prec));
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DPRINTF(("ad1848_set_format: encoding=%d precision=%d\n", encoding, precision));
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/* If not linear; force prec to 8bits */
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if (fmt != AUDIO_ENCODING_PCM16 && prec == 16)
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prec = 8;
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switch (encoding) {
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case AUDIO_ENCODING_ULAW:
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case AUDIO_ENCODING_ALAW:
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case AUDIO_ENCODING_PCM8:
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if (precision == 16)
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precision = 8;
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break;
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case AUDIO_ENCODING_PCM16:
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if (precision == 8)
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encoding = AUDIO_ENCODING_PCM8;
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break;
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default:
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return (EINVAL);
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}
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if (fmt < AUDIO_ENCODING_ULAW || fmt > AUDIO_ENCODING_PCM8)
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goto nogood;
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if (precision != 8 && precision != 16)
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return (EINVAL);
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if (prec != 8 && prec != 16)
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goto nogood;
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sc->format_bits = format2bits[fmt-1];
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if (fmt == AUDIO_ENCODING_PCM16 && prec == 8)
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sc->format_bits = FMT_PCM8 >> 5; /* signed vs. unsigned samples? */
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sc->encoding = encoding;
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sc->precision = precision;
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sc->format_bits = format2bits[encoding];
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sc->need_commit = 1;
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DPRINTF(("ad1848_set_format: bits=%x\n", sc->format_bits));
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return fmt;
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nogood:
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sc->format_bits = 0;
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return -1;
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return (0);
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}
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/*
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@ -1,4 +1,4 @@
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/* $NetBSD: ad1848var.h,v 1.9 1997/03/13 02:19:54 mycroft Exp $ */
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/* $NetBSD: ad1848var.h,v 1.10 1997/03/19 19:31:16 mycroft Exp $ */
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/*
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* Copyright (c) 1994 John Brezak
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@ -64,19 +64,11 @@ struct ad1848_softc {
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int sc_drq; /* DMA */
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int sc_recdrq; /* record/capture DMA */
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u_long sc_irate; /* Sample rate for input */
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u_long sc_orate; /* ...and output */
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/* We keep track of these */
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struct ad1848_volume rec_gain, aux1_gain, aux2_gain, out_gain, mon_gain, line_gain, mono_gain;
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u_int encoding; /* ulaw/linear -- keep track */
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u_int precision; /* 8/16 bits */
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int rec_port; /* recording port */
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int channels;
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/* ad1848 */
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u_char MCE_bit;
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char mic_gain_on; /* CS4231 only */
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@ -84,9 +76,14 @@ struct ad1848_softc {
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char *chip_name;
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int mode;
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int speed;
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int channels;
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u_long speed;
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u_int encoding; /* ulaw/linear -- keep track */
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u_int precision; /* 8/16 bits */
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u_char speed_bits;
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u_char format_bits;
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u_char need_commit;
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u_long sc_interrupts; /* number of interrupts taken */
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void (*sc_intr)(void *); /* dma completion intr handler */
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