card-opl3sa2.c.diff

linux TV 源码

--- card-opl3sa2.c.org	Sun Feb  3 15:38:12 2002
+++ card-opl3sa2.c	Sun Feb  3 15:38:12 2002
@@ -55,6 +55,7 @@
 int snd_dma1_size[SND_CARDS] = SND_DEFAULT_DMA_SIZE;	/* 8,16,32,64,128 */
 int snd_dma2_size[SND_CARDS] = SND_DEFAULT_DMA_SIZE;	/* 8,16,32,64,128 */
 int snd_opl3sa3_ymode[SND_CARDS] = { [0 ... (SND_CARDS-1)] = 0 };   /* 0,1,2,3 */ /*SL Added*/
+int snd_opl3sa_zvport[SND_CARDS] = { [0 ... (SND_CARDS-1)] = 0 };   /* 0(absent),1(available) */
 #ifdef __ISAPNP__
 int snd_isapnp[SND_CARDS] = {[0 ... (SND_CARDS - 1)] = 1};
 #endif
@@ -88,6 +89,8 @@
 #endif
 MODULE_PARM(snd_opl3sa3_ymode, "1-" __MODULE_STRING(SND_CARDS) "i"); /* SL Added */
 MODULE_PARM_DESC(snd_opl3sa3_ymode, "Speaker size selection for 3D Enhancement mode: Desktop/Large Notebook/Small Notebook/HiFi. [list=0,1,2,3]");  /* SL Added */
+MODULE_PARM(snd_opl3sa_zvport, "1-" __MODULE_STRING(SND_CARDS) "i");
+MODULE_PARM_DESC(snd_opl3sa_zvport, "ZV port. [list=0,1]");
 
 struct snd_opl3sa {
 	int version;		/* 2 or 3 */
@@ -109,6 +112,7 @@
 	snd_kmixer_element_t *me_vol_master;
 	snd_kmixer_element_t *me_sw_master;
 	snd_kmixer_element_t *me_tone;
+	snd_kmixer_element_t *me_zvport;
 #ifdef __ISAPNP__
 	struct isapnp_dev *dev;
 #endif
@@ -506,6 +510,30 @@
 	return change;
 }
 
+static int snd_opl3sa_zv_switch(snd_kmixer_element_t * element,
+				 int w_flag, int *value)
+{
+	struct snd_opl3sa *oplcard = (struct snd_opl3sa *)element->private_data;
+	unsigned long flags;
+	unsigned char reg, oval;
+	int change = 0;
+	
+	spin_lock_irqsave(&oplcard->reg_lock, flags);
+	oval = (reg = snd_opl3sa_read(oplcard->port, 0x02)) & 0x01;
+	if (!w_flag) {
+		*value = oval;
+	} else {
+		change = oval != *value;
+		reg &= ~0x01;
+		if (*value)
+			reg |= 0x01;
+		snd_opl3sa_write(oplcard->port, 0x02, reg);
+	}
+	spin_unlock_irqrestore(&oplcard->reg_lock, flags);
+	return change;
+	
+}
+
 static int snd_opl3sa_group_master(snd_kmixer_group_t * group,
 				   snd_kmixer_file_t * file,
 				   int w_flag,
@@ -944,6 +972,10 @@
 		if (snd_opl3_new(card, 0, snd_fm_port[dev],
 				 snd_fm_port[dev] + 2,
 				 OPL3_HW_OPL3, 1, &synth) < 0)
+			goto __nodev;
+	}
+	if (snd_opl3sa_zvport[dev] != 0){
+		if ((oplcard->me_zvport = snd_mixer_lib_sw2(mixer, "ZV Port Switch", 0, snd_opl3sa_zv_switch, oplcard)) == NULL)
 			goto __nodev;
 	}
 #if 0