Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (214 commits)
  ALSA: hda - Add pin-fix for HP dc5750
  ALSA: als4000: Fix potentially invalid DMA mode setup
  ALSA: als4000: enable burst mode
  ALSA: hda - Fix initial capsrc selection in patch_alc269()
  ASoC: TWL4030: Capture route runtime DAPM ordering fix
  ALSA: hda - Add PC-beep whitelist for an Intel board
  ALSA: hda - More relax for pending period handling
  ALSA: hda - Define AC_FMT_* constants
  ALSA: hda - Fix beep frequency on IDT 92HD73xx and 92HD71Bxx codecs
  ALSA: hda - Add support for HDMI HBR passthrough
  ALSA: hda - Set Stream Type in Stream Format according to AES0
  ALSA: hda - Fix Thinkpad X300 so SPDIF is not exposed
  ALSA: hda - FIX to not expose SPDIF on Thinkpad X301, since it does not have the ability to use SPDIF
  ASoC: wm9081: fix resource reclaim in wm9081_register error path
  ASoC: wm8978: fix a memory leak if a wm8978_register fail
  ASoC: wm8974: fix a memory leak if another WM8974 is registered
  ASoC: wm8961: fix resource reclaim in wm8961_register error path
  ASoC: wm8955: fix resource reclaim in wm8955_register error path
  ASoC: wm8940: fix a memory leak if wm8940_register return error
  ASoC: wm8904: fix resource reclaim in wm8904_register error path
  ...

1 files changed, 67 insertions, 0 deletions

diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 8e37a045188..4cb55d3902f 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -758,6 +758,73 @@ void ep93xx_keypad_release_gpio(struct platform_device *pdev)
 }
 EXPORT_SYMBOL(ep93xx_keypad_release_gpio);
 
+/*************************************************************************
+ * EP93xx I2S audio peripheral handling
+ *************************************************************************/
+static struct resource ep93xx_i2s_resource[] = {
+        {
+                .start  = EP93XX_I2S_PHYS_BASE,
+                .end    = EP93XX_I2S_PHYS_BASE + 0x100 - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device ep93xx_i2s_device = {
+        .name           = "ep93xx-i2s",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(ep93xx_i2s_resource),
+        .resource       = ep93xx_i2s_resource,
+};
+
+void __init ep93xx_register_i2s(void)
+{
+        platform_device_register(&ep93xx_i2s_device);
+}
+
+#define EP93XX_SYSCON_DEVCFG_I2S_MASK   (EP93XX_SYSCON_DEVCFG_I2SONSSP | \
+                                         EP93XX_SYSCON_DEVCFG_I2SONAC97)
+
+#define EP93XX_I2SCLKDIV_MASK           (EP93XX_SYSCON_I2SCLKDIV_ORIDE | \
+                                         EP93XX_SYSCON_I2SCLKDIV_SPOL)
+
+int ep93xx_i2s_acquire(unsigned i2s_pins, unsigned i2s_config)
+{
+        unsigned val;
+
+        /* Sanity check */
+        if (i2s_pins & ~EP93XX_SYSCON_DEVCFG_I2S_MASK)
+                return -EINVAL;
+        if (i2s_config & ~EP93XX_I2SCLKDIV_MASK)
+                return -EINVAL;
+
+        /* Must have only one of I2SONSSP/I2SONAC97 set */
+        if ((i2s_pins & EP93XX_SYSCON_DEVCFG_I2SONSSP) ==
+            (i2s_pins & EP93XX_SYSCON_DEVCFG_I2SONAC97))
+                return -EINVAL;
+
+        ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2S_MASK);
+        ep93xx_devcfg_set_bits(i2s_pins);
+
+        /*
+         * This is potentially racy with the clock api for i2s_mclk, sclk and 
+         * lrclk. Since the i2s driver is the only user of those clocks we
+         * rely on it to prevent parallel use of this function and the 
+         * clock api for the i2s clocks.
+         */
+        val = __raw_readl(EP93XX_SYSCON_I2SCLKDIV);
+        val &= ~EP93XX_I2SCLKDIV_MASK;
+        val |= i2s_config;
+        ep93xx_syscon_swlocked_write(val, EP93XX_SYSCON_I2SCLKDIV);
+
+        return 0;
+}
+EXPORT_SYMBOL(ep93xx_i2s_acquire);
+
+void ep93xx_i2s_release(void)
+{
+        ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2S_MASK);
+}
+EXPORT_SYMBOL(ep93xx_i2s_release);
 
 extern void ep93xx_gpio_init(void);