Imported Upstream version 4.2-build2006upstream/4.2-build2006upstream

1 files changed, 128 insertions, 0 deletions

diff --git a/kernel/drv/oss_hdaudio/hdaudio_gpio_handlers.c b/kernel/drv/oss_hdaudio/hdaudio_gpio_handlers.c
new file mode 100644
index 0000000..357b689
--- /dev/null
+++ b/kernel/drv/oss_hdaudio/hdaudio_gpio_handlers.c
@@ -0,0 +1,128 @@
+/*
+ * Purpose: GPIO initialization handlers for some High Definition Audio systems
+ *
+ * This file contains codec initialization functions for some HDaudio
+ * systems that require initialization of GPIO bits. All functions should
+ * return OSS_EAGAIN so that hdaudio_codec.c knows to call the generic
+ * codec/mixer initialization routine for the codec. Alternatively the
+ * GPIO init function may call the codec/mixer init function for the
+ * given system directly (return my_mixer_init_func()).
+ *
+ * Note that if the system has a dedicated mixer initialization function
+ * then also GPIO initialization needs to be performed in the mixer init
+ * function (since the same mixer_init function pointers in hdaudio_codecds.h
+ * are shared for both purposes).
+ *
+ * For example:
+ *
+ * int
+ * hdaudio_GPIO_init (int dev, hdaudio_mixer_t * mixer, int cad, int top_group)
+ * {
+ *	codec_t *codec = mixer->codecs[cad];
+ *	int afg = codec->afg;	// Audio function group root widget
+ *
+ *	// Now use the corb_read() and corb_write() functions to set the
+ *	// GPIO related verbs (registers) to the required values.
+ *
+ * 	return OSS_EAGAIN;	// Fallback
+ * }
+ *
+ * To write the GPIO registers you can use:
+ *
+ *	  corb_write (mixer, cad, afg, 0, SET_GPIO_DIR, 0xNNNNNNNN);
+ *	  corb_write (mixer, cad, afg, 0, SET_GPIO_ENABLE, 0xNNNNNNNN);
+ *	  corb_write (mixer, cad, afg, 0, SET_GPIO_DATA, 0xNNNNNNNN);
+ *
+ * Also (if necessary) you can use the following calls. However they will probably
+ * need changes to hdaudio_codec.c so that the unsolicited responses are handled peoperly:
+ *
+ *	  corb_write (mixer, cad, afg, 0, SET_GPIO_WKEN, 0xNNNNNNNN);
+ *	  corb_write (mixer, cad, afg, 0, SET_GPIO_UNSOL, 0xNNNNNNNN);
+ *	  corb_write (mixer, cad, afg, 0, SET_GPIO_STICKY, 0xNNNNNNNN);
+ *
+ * Next the function prototype should be added to hdaudio_codecids.h. Finally
+ * edit the subdevices[] array in hdaudio_codecids.h so that the function
+ * gets called when given codec (subsystem vendor+device) is detected in the 
+ * system. It is not recommended to use the codecs[] table to
+ * detect systems that need GPIO handling. The same codec may be used
+ * in many different systems and most of them don't require GPIO init.
+ * However this is possible if the handler uses the subvendor+subdevice ID to detect the system.
+ */
+/*
+ *
+ * This file is part of Open Sound System.
+ *
+ * Copyright (C) 4Front Technologies 1996-2008.
+ *
+ * This this source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ */
+
+#include "oss_hdaudio_cfg.h"
+#include "hdaudio.h"
+#include "hdaudio_codec.h"
+#include "hdaudio_codecids.h"
+
+int
+hdaudio_mac_GPIO_init (int dev, hdaudio_mixer_t * mixer, int cad, int top_group)
+{
+ 	codec_t *codec = mixer->codecs[cad];
+ 	int afg = codec->afg;	// Audio function group root widget
+	unsigned int subdevice = codec->subvendor_id;
+	unsigned int codec_id = codec->vendor_id;
+
+	// TODO: Populate this function with the real stuff
+	
+cmn_err(CE_CONT, "hdaudio_mac_GPIO_init() entered, afg=%d, subdevice=0x%08x, codec=0x%08x\n", afg, subdevice, codec_id);
+
+	return OSS_EAGAIN; /* Continue with the default mixer init */
+}
+
+int
+hdaudio_mac_sigmatel_GPIO_init (int dev, hdaudio_mixer_t * mixer, int cad, int top_group)
+{
+cmn_err(CE_CONT, "iMac Sigmatel hdaudio initialization\n");
+	return hdaudio_mac_GPIO_init(dev, mixer, cad, top_group);
+}
+
+int
+hdaudio_mac_realtek_GPIO_init (int dev, hdaudio_mixer_t * mixer, int cad, int top_group)
+{
+ 	codec_t *codec = mixer->codecs[cad];
+ 	int afg = codec->afg;	// Audio function group root widget
+
+cmn_err(CE_CONT, "iMac Realtek hdaudio initialization\n");
+
+	corb_write (mixer, cad, afg, 0, SET_GPIO_DIR, 0xffffffff);
+ 	corb_write (mixer, cad, afg, 0, SET_GPIO_ENABLE, 0xffffffff);
+	corb_write (mixer, cad, afg, 0, SET_GPIO_DATA, 0xffffffff);
+	return hdaudio_mac_GPIO_init(dev, mixer, cad, top_group);
+}
+
+int
+hdaudio_asus_a7k_GPIO_init (int dev, hdaudio_mixer_t * mixer, int cad, int top_group)
+{
+        DDB(cmn_err(CE_CONT, "hdaudio_asus_a7k_GPIO_init got called.\n"));
+
+        corb_write (mixer, cad, 0x01, 0, SET_GPIO_ENABLE, 3);
+        corb_write (mixer, cad, 0x01, 0, SET_GPIO_DIR, 1);
+        corb_write (mixer, cad, 0x01, 0, SET_GPIO_DATA, 1);
+
+        return hdaudio_generic_mixer_init(dev, mixer, cad, top_group);
+}
+
+int
+hdaudio_GPIO_init_1 (int dev, hdaudio_mixer_t * mixer, int cad, int top_group)
+{
+	DDB(cmn_err(CE_CONT, "hdaudio_GPIO_init_1 got called.\n"));
+
+	/* Acer TravelMate 4060 and similar Aspire series, with ALC260 codec, need
+	 * that we init GPIO to get internal speaker and headphone jack working. */
+	corb_write(mixer, cad, 0x01, 0, SET_GPIO_ENABLE, 1);
+	corb_write(mixer, cad, 0x01, 0, SET_GPIO_DIR, 1);
+	corb_write(mixer, cad, 0x01, 0, SET_GPIO_DATA, 1);
+  
+	return hdaudio_generic_mixer_init(dev, mixer, cad, top_group);
+}