Merge branch 'ep93xx' into for-2.6.36

Trivial add/add fixup required in the clock table.

Conflicts:
	arch/arm/mach-ep93xx/clock.c

1 files changed, 67 insertions, 0 deletions

diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 9092677f63e..b4ee5409eb7 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -714,6 +714,73 @@ 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);