patch-2.3.32 linux/drivers/sound/sb_ess.c

• Lines: 117
• Date: Wed Dec 8 15:17:55 1999
• Orig file: v2.3.31/linux/drivers/sound/sb_ess.c
• Orig date: Mon Oct 4 15:49:30 1999

diff -u --recursive --new-file v2.3.31/linux/drivers/sound/sb_ess.c linux/drivers/sound/sb_ess.c
@@ -10,29 +10,29 @@
  *
  * History:
  *
- * Rolf Fokkens	(Dec 20 1998):	ES188x recording level support on a per
+ * Rolf Fokkens	 (Dec 20 1998):	ES188x recording level support on a per
  * fokkensr@vertis.nl			input basis.
- *				(Dec 24 1998):	Recognition of ES1788, ES1887, ES1888,
+ *				 (Dec 24 1998):	Recognition of ES1788, ES1887, ES1888,
  *								ES1868, ES1869 and ES1878. Could be used for
  *								specific handling in the future. All except
  *								ES1887 and ES1888 and ES688 are handled like
  *								ES1688.
- *				(Dec 27 1998):	RECLEV for all (?) ES1688+ chips. ES188x now
+ *				 (Dec 27 1998):	RECLEV for all (?) ES1688+ chips. ES188x now
  *								have the "Dec 20" support + RECLEV
- *				(Jan  2 1999):	Preparation for Full Duplex. This means
+ *				 (Jan  2 1999):	Preparation for Full Duplex. This means
  *								Audio 2 is now used for playback when dma16
  *								is specified. The next step would be to use
  *								Audio 1 and Audio 2 at the same time.
- *				(Jan  9 1999):	Put all ESS stuff into sb_ess.[ch], this
+ *				 (Jan  9 1999):	Put all ESS stuff into sb_ess.[ch], this
  *								includes both the ESS stuff that has been in
  *								sb_*[ch] before I touched it and the ESS support
  *								I added later
- *				(Jan 23 1999):	Full Duplex seems to work. I wrote a small
+ *				 (Jan 23 1999):	Full Duplex seems to work. I wrote a small
  *								test proggy which works OK. Haven't found
  *								any applications to test it though. So why did
  *								I bother to create it anyway?? :) Just for
  *								fun.
- *				(May  2 1999):	I tried to be too smart by "introducing"
+ *				 (May  2 1999):	I tried to be too smart by "introducing"
  *								ess_calc_best_speed (). The idea was that two
  *								dividers could be used to setup a samplerate,
  *								ess_calc_best_speed () would choose the best.
@@ -40,10 +40,12 @@
  *								recording problems for high samplerates. I
  *								fixed this by removing ess_calc_best_speed ()
  *								and just doing what the documentation says. 
- * Andy Sloane  (June 4 1999):  Stole some code from ALSA to fix the playback
+ * Andy Sloane   (Jun  4 1999): Stole some code from ALSA to fix the playback
  * andy@guildsoftware.com		speed on ES1869, ES1879, ES1887, and ES1888.
  * 								1879's were previously ignored by this driver;
  * 								added (untested) support for those.
+ * Cvetan Ivanov (Oct 27 1999): Fixed ess_dsp_init to call ess_set_dma_hw for
+ * zezo@inet.bg					_ALL_ ESS models, not only ES1887
  *
  * This files contains ESS chip specifics. It's based on the existing ESS
  * handling as it resided in sb_common.c, sb_mixer.c and sb_audio.c. This
@@ -52,7 +54,7 @@
  * - RECLEV support for ES1688 and later
  * - 6 bits playback level support chips later than ES1688
  * - Recording level support on a per-device basis for ES1887
- * - Full-Duplex for ES1887 (under development)
+ * - Full-Duplex for ES1887
  *
  * Full duplex is enabled by specifying dma16. While the normal dma must
  * be one of 0, 1 or 3, dma16 can be one of 0, 1, 3 or 5. DMA 5 is a 16 bit
@@ -100,7 +102,7 @@
  * of writing 0x00 to 0x7f (which should be done by reset): The ES1887 moves
  * into ES1888 mode. This means that it claims IRQ 11, which happens to be my
  * ISDN adapter. Needless to say it no longer worked. I now understand why
- * after rebooting 0x7f already was 0x05, the value of my choise: the BIOS
+ * after rebooting 0x7f already was 0x05, the value of my choice: the BIOS
  * did it.
  *
  * Oh, and this is another trap: in ES1887 docs mixer register 0x70 is decribed
@@ -1200,10 +1202,10 @@
 
 	/* AAS: info stolen from ALSA: these boards have different clocks */
 	switch(devc->submodel) {
-/* APPARENTLY NOT 1869 
+/* APPARENTLY NOT 1869 AND 1887
 		case SUBMDL_ES1869:
-*/		
 		case SUBMDL_ES1887:
+*/		
 		case SUBMDL_ES1888:
 			devc->caps |= SB_CAP_ES18XX_RATE;
 			break;
@@ -1305,6 +1307,13 @@
 int ess_dsp_init (sb_devc *devc, struct address_info *hw_config)
 {
 	/*
+	 * Caller also checks this, but anyway
+	 */
+	if (devc->model != MDL_ESS) {
+		printk (KERN_INFO "ess_dsp_init for non ESS chip\n");
+		return 1;
+	}
+	/*
 	 * This for ES1887 to run Full Duplex. Actually ES1888
 	 * is allowed to do so too. I have no idea yet if this
 	 * will work for ES1888 however.
@@ -1324,15 +1333,12 @@
 		if (devc->dma8 != devc->dma16 && devc->dma16 != -1) {
 			devc->duplex = 1;
 		}
-
-		if (!ess_set_dma_hw (devc)) {
-			free_irq(devc->irq, devc);
-			return 0;
-		}
-		return 1;
-	} else {
-		return -1;
 	}
+	if (!ess_set_dma_hw (devc)) {
+		free_irq(devc->irq, devc);
+		return 0;
+	}
+	return 1;
 }
 
 /****************************************************************************