[ALSA] #1/4 for Zoom Video - resolve common vs chipset specific mixer controls

Modules: ES18xx driver

First of 4 es18xx.c patches culminating in Zoom Video support.
While adding support for Zoom Video to the es18xx driver I found some of
the mixer controls
were wrong. Since you guys went to the trouble of supplying the
datasheets for the supported
chipsets I did a review of all of them and tried to get es18xx.c to
accurately reflect the
proper mixer controls for each chipset. If the datasheets are wrong then
so are my patches.

This first patch moves some controls from the common-to-all-chipsets array
'snd_es18xx_base_controls' to a chipset-specific array and adds code to
manage that new array.
Also while testing on my ES1878 test machine I discovered it needed a
couple of udelays in
the identify function so those are in this patch as well.

Testing:
This work was initially done on the source from the Debian Sarge ALSA
package, then tested
on an ES1879 and an ES1878 machine. Patches were created against the
Sarge code and then edited
to apply correctly to the ALSA cvs code. Lastly the patched ALSA cvs
code was test for
successful compilation. No additional testing was done on the ALSA cvs
version.

Signed-off-by: Mark Salazar <markTheCoder@justmyself.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/es18xx.c

@@ -1191,19 +1191,22 @@ static int snd_es18xx_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_e
 	return change;
 }
 
+/* Mixer controls
+ * These arrays contain setup data for mixer controls.
+ * 
+ * The controls that are universal to all chipsets are fully initialized
+ * here.
+ */
 static struct snd_kcontrol_new snd_es18xx_base_controls[] = {
 ES18XX_DOUBLE("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0),
 ES18XX_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
 ES18XX_DOUBLE("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0),
 ES18XX_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
 ES18XX_DOUBLE("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0),
-ES18XX_DOUBLE("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
 ES18XX_DOUBLE("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0),
 ES18XX_DOUBLE("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0),
-ES18XX_SINGLE("PC Speaker Playback Volume", 0, 0x3c, 0, 7, 0),
 ES18XX_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
 ES18XX_DOUBLE("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0),
-ES18XX_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
 {
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 	.name = "Capture Source",
@@ -1213,19 +1216,27 @@ ES18XX_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
 }
 };
 
-static struct snd_kcontrol_new snd_es18xx_mono_in_control = 
-ES18XX_DOUBLE("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0);
-
 static struct snd_kcontrol_new snd_es18xx_recmix_controls[] = {
 ES18XX_DOUBLE("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0),
 ES18XX_DOUBLE("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0),
 ES18XX_DOUBLE("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0),
 ES18XX_DOUBLE("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0),
-ES18XX_DOUBLE("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0),
 ES18XX_DOUBLE("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0),
 ES18XX_DOUBLE("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0)
 };
 
+/*
+ * The chipset specific mixer controls
+ */
+static struct snd_kcontrol_new snd_es18xx_opt_speaker =
+	ES18XX_SINGLE("PC Speaker Playback Volume", 0, 0x3c, 0, 7, 0);
+
+static struct snd_kcontrol_new snd_es18xx_opt_1869[] = {
+ES18XX_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
+ES18XX_DOUBLE("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
+ES18XX_DOUBLE("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0)
+};
+
 static struct snd_kcontrol_new snd_es18xx_pcm1_controls[] = {
 ES18XX_DOUBLE("PCM Playback Volume", 0, 0x14, 0x14, 4, 0, 15, 0),
 };
@@ -1476,11 +1487,14 @@ static int __devinit snd_es18xx_identify(struct snd_es18xx *chip)
 	}
 			
         outb(0x40, chip->port + 0x04);
+	udelay(10);
 	hi = inb(chip->port + 0x05);
+	udelay(10);
 	lo = inb(chip->port + 0x05);
 	if (hi != lo) {
 		chip->version = hi << 8 | lo;
 		chip->ctrl_port = inb(chip->port + 0x05) << 8;
+		udelay(10);
 		chip->ctrl_port += inb(chip->port + 0x05);
 
 		if ((chip->res_ctrl_port = request_region(chip->ctrl_port, 8, "ES18xx - CTRL")) == NULL) {
@@ -1778,10 +1792,6 @@ static int __devinit snd_es18xx_mixer(struct snd_es18xx *chip)
 		}
 	}
 
-	if (chip->caps & ES18XX_MONO) {
-		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_mono_in_control, chip))) < 0)
-			return err;
-	}
 	if (chip->caps & ES18XX_RECMIX) {
 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_recmix_controls); idx++) {
 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_recmix_controls[idx], chip))) < 0)
@@ -1819,6 +1829,23 @@ static int __devinit snd_es18xx_mixer(struct snd_es18xx *chip)
 			
 		}
 	}
+	/* finish initializing other chipset specific controls
+	 */
+	if (chip->version != 0x1868) {
+		err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_opt_speaker,
+						     chip));
+		if (err < 0)
+			return err;
+	}
+	if (chip->version == 0x1869) {
+		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_opt_1869); idx++) {
+			err = snd_ctl_add(card,
+					  snd_ctl_new1(&snd_es18xx_opt_1869[idx],
+						       chip));
+			if (err < 0)
+				return err;
+		}
+	}
 	return 0;
 }