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ALSA: emu10k1: clarify various fx8010.*_mask fields

Message ID 20230421141006.1005509-1-oswald.buddenhagen@gmx.de
State Accepted
Commit e81995a81e25e8fab286db6539198dd97b140807
Headers show
Series ALSA: emu10k1: clarify various fx8010.*_mask fields | expand

Commit Message

Oswald Buddenhagen April 21, 2023, 2:10 p.m. UTC 
extin_mask and extout_mask are used only by the SbLive! microcode, so
they have no effect on Audigy.

Eliminate fxbus_mask entirely, as it wasn't actually used for anything.

As a drive-by, remove the pointless pad1 field from struct
snd_emu10k1_fx8010 - it is not visible to user space, so it has no
binary compatibility constraints.

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
---
 include/sound/emu10k1.h          | 6 ++----
 sound/pci/emu10k1/emu10k1_main.c | 7 ++++---
 sound/pci/emu10k1/emufx.c        | 9 ++++-----
 3 files changed, 10 insertions(+), 12 deletions(-)
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Patch

diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h
index 39787fecc8d9..3407ca4a1210 100644
--- a/include/sound/emu10k1.h
+++ b/include/sound/emu10k1.h
@@ -1599,10 +1599,8 @@  struct snd_emu10k1_fx8010_pcm {
 };
 
 struct snd_emu10k1_fx8010 {
-	unsigned short fxbus_mask;	/* used FX buses (bitmask) */
-	unsigned short extin_mask;	/* used external inputs (bitmask) */
-	unsigned short extout_mask;	/* used external outputs (bitmask) */
-	unsigned short pad1;
+	unsigned short extin_mask;	/* used external inputs (bitmask); not used for Audigy */
+	unsigned short extout_mask;	/* used external outputs (bitmask); not used for Audigy */
 	unsigned int itram_size;	/* internal TRAM size in samples */
 	struct snd_dma_buffer etram_pages; /* external TRAM pages and size */
 	unsigned int dbg;		/* FX debugger register */
diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c
index 3880f359e688..65fd6b62bc9c 100644
--- a/sound/pci/emu10k1/emu10k1_main.c
+++ b/sound/pci/emu10k1/emu10k1_main.c
@@ -1901,11 +1901,12 @@  int snd_emu10k1_create(struct snd_card *card,
 
 	pci_set_master(pci);
 
-	emu->fx8010.fxbus_mask = 0x303f;
+	// The masks are not used for Audigy.
+	// FIXME: these should come from the card_capabilites table.
 	if (extin_mask == 0)
-		extin_mask = 0x3fcf;
+		extin_mask = 0x3fcf;  // EXTIN_*
 	if (extout_mask == 0)
-		extout_mask = 0x7fff;
+		extout_mask = 0x7fff;  // EXTOUT_*
 	emu->fx8010.extin_mask = extin_mask;
 	emu->fx8010.extout_mask = extout_mask;
 	emu->enable_ir = enable_ir;
diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index 6cf7c8b1de47..c74e66e03ae0 100644
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -2523,19 +2523,18 @@  static void snd_emu10k1_fx8010_info(struct snd_emu10k1 *emu,
 				   struct snd_emu10k1_fx8010_info *info)
 {
 	const char * const *fxbus, * const *extin, * const *extout;
-	unsigned short fxbus_mask, extin_mask, extout_mask;
+	unsigned short extin_mask, extout_mask;
 	int res;
 
 	info->internal_tram_size = emu->fx8010.itram_size;
 	info->external_tram_size = emu->fx8010.etram_pages.bytes / 2;
 	fxbus = fxbuses;
 	extin = emu->audigy ? audigy_ins : creative_ins;
 	extout = emu->audigy ? audigy_outs : creative_outs;
-	fxbus_mask = emu->fx8010.fxbus_mask;
-	extin_mask = emu->fx8010.extin_mask;
-	extout_mask = emu->fx8010.extout_mask;
+	extin_mask = emu->audigy ? ~0 : emu->fx8010.extin_mask;
+	extout_mask = emu->audigy ? ~0 : emu->fx8010.extout_mask;
 	for (res = 0; res < 16; res++, fxbus++, extin++, extout++) {
-		copy_string(info->fxbus_names[res], fxbus_mask & (1 << res) ? *fxbus : NULL, "FXBUS", res);
+		copy_string(info->fxbus_names[res], *fxbus, "FXBUS", res);
 		copy_string(info->extin_names[res], extin_mask & (1 << res) ? *extin : NULL, "Unused", res);
 		copy_string(info->extout_names[res], extout_mask & (1 << res) ? *extout : NULL, "Unused", res);
 	}