Imported Upstream version 4.2-build2006upstream/4.2-build2006upstream

1 files changed, 137 insertions, 0 deletions

diff --git a/kernel/drv/oss_envy24ht/envy24ht_ac97.c b/kernel/drv/oss_envy24ht/envy24ht_ac97.c
new file mode 100644
index 0000000..46d2382
--- /dev/null
+++ b/kernel/drv/oss_envy24ht/envy24ht_ac97.c
@@ -0,0 +1,137 @@
+/*
+ * Purpose: Low level routines for AC97 based Envy24HT boards (mainly Envy24-PT).
+ */
+/*
+ *
+ * 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_envy24ht_cfg.h"
+
+#include "spdif.h"
+#include "envy24ht.h"
+
+#define AKM_ADDRESS 0x10
+#if 0
+# define PRT_STATUS(v) outb(v&0xff, 0x378)
+#else
+# define PRT_STATUS(v)
+#endif
+
+#if 0
+static unsigned char
+i2c_read (envy24ht_devc * devc, unsigned char addr, unsigned char pos)
+{
+  int i;
+  unsigned char data;
+  oss_native_word flags;
+
+  MUTEX_ENTER_IRQDISABLE (devc->low_mutex, flags);
+  OUTB (devc->osdev, pos, devc->ccs_base + 0x11);	/* Offset */
+  OUTB (devc->osdev, addr << 1, devc->ccs_base + 0x10);	/* Read address  */
+
+  for (i = 0; i < 2000; i++)
+    {
+      unsigned char status = INB (devc->osdev, devc->ccs_base + 0x13);
+      if (!(status & 1))
+	break;
+
+    }
+
+  oss_udelay (1);
+  data = INB (devc->osdev, devc->ccs_base + 0x12);
+  MUTEX_EXIT_IRQRESTORE (devc->low_mutex, flags);
+
+  return data;
+}
+
+static void
+i2c_write (envy24ht_devc * devc, unsigned char addr, unsigned char pos,
+	   unsigned char data)
+{
+  int i;
+  oss_native_word flags;
+
+  MUTEX_ENTER_IRQDISABLE (devc->low_mutex, flags);
+  OUTB (devc->osdev, pos, devc->ccs_base + 0x11);	/* Offset */
+  OUTB (devc->osdev, data, devc->ccs_base + 0x12);	/* Data */
+  OUTB (devc->osdev, (addr << 1) | 1, devc->ccs_base + 0x10);	/* Write address  */
+
+  for (i = 0; i < 2000; i++)
+    {
+      unsigned char status = INB (devc->osdev, devc->ccs_base + 0x13);
+      if (!(status & 1))
+	break;
+
+    }
+  MUTEX_EXIT_IRQRESTORE (devc->low_mutex, flags);
+}
+#endif
+
+/*ARGSUSED*/ 
+static void
+init_cs8415a (envy24ht_devc * devc)
+{
+}
+
+/*ARGSUSED*/ 
+static void
+init_wm8728 (envy24ht_devc * devc)
+{
+
+#if 0
+  printk ("Regs=");
+  for (i = 0; i < 0x18; i++)
+    {
+      PRT_STATUS (2);
+      printk ("%02x ", i2c_read (devc, addr, i));
+      PRT_STATUS (0);
+    }
+  printk ("\n");
+#endif
+}
+
+static void
+ac97_card_init (envy24ht_devc * devc)
+{
+
+  PRT_STATUS (0);
+  PRT_STATUS (0x01);
+  PRT_STATUS (0);
+
+  OUTW (devc->osdev, 0x000f, devc->ccs_base + 0x14);	/* GPIO */
+
+  oss_udelay (1000);
+
+  devc->recsrc = 0;
+  init_cs8415a (devc);
+  init_wm8728 (devc);
+}
+
+/*ARGSUSED*/ 
+static int
+ac97_mixer_init (envy24ht_devc * devc, int dev, int group)
+{
+  return 0;
+}
+
+#if 0
+static int
+ac97_private1 (envy24ht_devc * devc, int value)
+{
+  i2c_write (devc, AKM_ADDRESS, (value >> 8) & 0xff, value & 0xff);
+  return 0;
+}
+#endif
+
+envy24ht_auxdrv_t envy24ht_ac97_auxdrv = {
+  ac97_card_init,
+  ac97_mixer_init
+};