patch-2.2.16 linux/drivers/sound/pss.c

• Lines: 218
• Date: Wed Jun 7 14:26:43 2000
• Orig file: v2.2.15/linux/drivers/sound/pss.c
• Orig date: Wed Dec 16 12:52:01 1998

diff -urN v2.2.15/linux/drivers/sound/pss.c linux/drivers/sound/pss.c
@@ -24,6 +24,30 @@
  *          To probe_pss_mss added test for initialize AD1848
  * 98-05-28: Vladimir Michl <vladimir.michl@upol.cz>
  *          Fixed computation of mixer volumes
+ * 04-05-1999: Anthony Barbachan <barbcode@xmen.cis.fordham.edu>
+ *             Added code that allows the user to enable his cdrom and/or 
+ *             joystick through the module parameters pss_cdrom_port and 
+ *             pss_enable_joystick.  pss_cdrom_port takes a port address as its
+ *             argument.  pss_enable_joystick takes either a 0 or a non-0 as its
+ *             argument.
+ * 04-06-1999: Anthony Barbachan <barbcode@xmen.cis.fordham.edu>
+ *             Separated some code into new functions for easier reuse.  
+ *             Cleaned up and streamlined new code.  Added code to allow a user 
+ *             to only use this driver for enabling non-sound components 
+ *             through the new module parameter pss_no_sound (flag).  Added 
+ *             code that would allow a user to decide whether the driver should 
+ *             reset the configured hardware settings for the PSS board through 
+ *             the module parameter pss_keep_settings (flag).   This flag will 
+ *             allow a user to free up resources in use by this card if needbe, 
+ *             furthermore it allows him to use this driver to just enable the 
+ *             emulations and then be unloaded as it is no longer needed.  Both 
+ *             new settings are only available to this driver if compiled as a 
+ *             module.  The default settings of all new parameters are set to 
+ *             load the driver as it did in previous versions.
+ * 04-07-1999: Anthony Barbachan <barbcode@xmen.cis.fordham.edu>
+ *             Added module parameter pss_firmware to allow the user to tell 
+ *             the driver where the fireware file is located.  The default 
+ *             setting is the previous hardcoded setting "/etc/sound/pss_synth".
  */
 
 
@@ -87,8 +111,7 @@
 #include "pss_boot.h"
 #else
 static int pss_synthLen = 0;
-static unsigned char *pss_synth =
-NULL;
+static unsigned char *pss_synth = NULL;
 #endif
 
 /* If compiled into kernel, it enable or disable pss mixer */
@@ -121,6 +144,8 @@
 
 static int      pss_initialized = 0;
 static int      nonstandard_microcode = 0;
+static int pss_cdrom_port = -1;	/* Parameter for the PSS cdrom port */
+static int pss_enable_joystick = 0;/* Parameter for enabling the joystick */
 
 static void pss_write(pss_confdata *devc, int data)
 {
@@ -578,6 +603,49 @@
 	 pss_mixer_ioctl
 };
 
+void disable_all_emulations(void)
+{
+	outw(0x0000, REG(CONF_PSS));	/* 0x0400 enables joystick */
+	outw(0x0000, REG(CONF_WSS));
+	outw(0x0000, REG(CONF_SB));
+	outw(0x0000, REG(CONF_MIDI));
+	outw(0x0000, REG(CONF_CDROM));
+}
+
+void configure_nonsound_components(void)
+{
+				/* Configure Joystick port */
+
+	if(pss_enable_joystick)
+	{
+		outw(0x0400, REG(CONF_PSS));	/* 0x0400 enables joystick */
+		printk(KERN_INFO "PSS: joystick enabled.\n");
+	}
+	else
+	{
+		printk(KERN_INFO "PSS: joystick port not enabled.\n");
+	}
+
+				/* Configure CDROM port */
+
+	if(pss_cdrom_port == -1)	/* If cdrom port enablation wasn't requested */
+	{
+		printk(KERN_INFO "PSS: CDROM port not enabled.\n");
+	}
+	else if(check_region(pss_cdrom_port, 2))
+	{
+		printk(KERN_ERR "PSS: CDROM I/O port conflict.\n");
+	}
+	else if(!set_io_base(devc, CONF_CDROM, pss_cdrom_port))
+	{
+		printk(KERN_ERR "PSS: CDROM I/O port could not be set.\n");
+	}
+	else					/* CDROM port successfully configured */
+	{
+		printk(KERN_INFO "PSS: CDROM I/O port set to 0x%x.\n", pss_cdrom_port);
+	}
+}
+
 void attach_pss(struct address_info *hw_config)
 {
 	unsigned short  id;
@@ -598,13 +666,10 @@
 	id = inw(REG(PSS_ID)) & 0x00ff;
 
 	/*
-	   * Disable all emulations. Will be enabled later (if required).
+	 * Disable all emulations. Will be enabled later (if required).
 	 */
-	outw(0x0000, REG(CONF_PSS));	/* 0x0400 enables joystick */
-	outw(0x0000, REG(CONF_WSS));
-	outw(0x0000, REG(CONF_SB));
-	outw(0x0000, REG(CONF_MIDI));
-	outw(0x0000, REG(CONF_CDROM));
+
+	disable_all_emulations();
 
 #if YOU_REALLY_WANT_TO_ALLOCATE_THESE_RESOURCES
 	if (sound_alloc_dma(hw_config->dma, "PSS"))
@@ -624,6 +689,7 @@
 	}
 #endif
 
+	configure_nonsound_components();
 	pss_initialized = 1;
 	sprintf(tmp, "ECHO-PSS  Rev. %d", id);
 	conf_printf(tmp, hw_config);
@@ -1028,6 +1094,8 @@
 #ifdef MODULE
 
 int pss_io = -1;
+int pss_no_sound = 0;		/* Just configure non-sound components */
+int pss_keep_settings = 1;	/* Keep hardware settings at module exit */
 
 int mss_io = -1;
 int mss_irq = -1;
@@ -1035,6 +1103,7 @@
 
 int mpu_io = -1;
 int mpu_irq = -1;
+char* pss_firmware = "/etc/sound/pss_synth";
 
 struct address_info cfgpss = { 0 /* pss_io */, 0, -1, -1 };
 struct address_info cfgmpu = { 0 /* mpu_io */, 0 /* mpu_irq */, 0, -1 };
@@ -1052,6 +1121,16 @@
 MODULE_PARM_DESC(mpu_io, "Set MIDI i/o base (0x330 or other. Address must be on 4 location boundaries and must be from 0x100 to 0xFFC)");
 MODULE_PARM(mpu_irq, "i");
 MODULE_PARM_DESC(mpu_irq, "Set MIDI IRQ (3, 5, 7, 9, 10, 11, 12)");
+MODULE_PARM(pss_cdrom_port, "i");
+MODULE_PARM_DESC(pss_cdrom_port, "Set the PSS CDROM port i/o base (0x340 or other)");
+MODULE_PARM(pss_enable_joystick, "i");
+MODULE_PARM_DESC(pss_enable_joystick, "Enables the PSS joystick port (1 to enable, 0 to disable)");
+MODULE_PARM(pss_no_sound, "i");
+MODULE_PARM_DESC(pss_no_sound, "Configure sound compoents (0 - no, 1 - yes)");
+MODULE_PARM(pss_keep_settings, "i");
+MODULE_PARM_DESC(pss_keep_settings, "Keep hardware setting at driver unloading (0 - no, 1 - yes)");
+MODULE_PARM(pss_firmware, "s");
+MODULE_PARM_DESC(pss_firmware, "Location of the firmware file (default - /etc/sound/pss_synth)");
 MODULE_PARM(pss_mixer, "b");
 MODULE_PARM_DESC(pss_mixer, "Enable (1) or disable (0) PSS mixer (controlling of output volume, bass, treble, synth volume). The mixer is not available on all PSS cards.");
 MODULE_AUTHOR("Hannu Savolainen, Vladimir Michl");
@@ -1066,6 +1145,17 @@
 
 int init_module(void)
 {
+	if(pss_no_sound)		/* If configuring only nonsound components */
+	{
+		cfgpss.io_base = pss_io;
+		if(!probe_pss(&cfgpss)) return -ENODEV;
+		printk(KERN_INFO "ECHO-PSS  Rev. %d\n", inw(REG(PSS_ID)) & 0x00ff);
+		printk(KERN_INFO "PSS: loading in no sound mode.\n");
+		disable_all_emulations();
+		configure_nonsound_components();
+		return 0;
+	}
+
 	if (pss_io == -1 || mss_io == -1 || mss_irq == -1 || mss_dma == -1) {
 		printk(KERN_INFO "pss: mss_io, mss_dma, mss_irq and pss_io must be set.\n");
 		return -EINVAL;
@@ -1083,7 +1173,7 @@
 	if (!pss_synth) 
 	{
 		fw_load = 1;
-		pss_synthLen = mod_firmware_load("/etc/sound/pss_synth", (void *) &pss_synth);
+		pss_synthLen = mod_firmware_load(pss_firmware, (void *) &pss_synth);
 	}
 	if (!probe_pss(&cfgpss))
 		return -ENODEV;
@@ -1105,14 +1195,23 @@
 
 void cleanup_module(void)
 {
-	if (fw_load && pss_synth)
-		vfree(pss_synth);
-	if (pssmss)
-		unload_pss_mss(&cfgmss);
-	if (pssmpu)
-		unload_pss_mpu(&cfgmpu);
-	unload_pss(&cfgpss);
-	SOUND_LOCK_END;
+	if(!pss_no_sound)
+	{
+		if(fw_load && pss_synth)
+			vfree(pss_synth);
+		if(pssmss)
+			unload_pss_mss(&cfgmss);
+		if(pssmpu)
+			unload_pss_mpu(&cfgmpu);
+		unload_pss(&cfgpss);
+		SOUND_LOCK_END;
+	}
+
+	if(!pss_keep_settings)	/* Keep hardware settings if asked */
+	{
+		disable_all_emulations();
+		printk(KERN_INFO "Resetting PSS sound card configurations.\n");
+	}
 }
 #endif
 #endif