EP93xx: Add i2s core support

Add core support for EP93xx i2s audio

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

2 files changed, 13 insertions, 0 deletions

diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
index 93e2ecc79ceb..3fbb095be6e9 100644
--- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
+++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
@@ -93,6 +93,7 @@
 /* APB peripherals */
 #define EP93XX_TIMER_BASE               EP93XX_APB_IOMEM(0x00010000)
 
+#define EP93XX_I2S_PHYS_BASE            EP93XX_APB_PHYS(0x00020000)
 #define EP93XX_I2S_BASE                 EP93XX_APB_IOMEM(0x00020000)
 
 #define EP93XX_SECURITY_BASE            EP93XX_APB_IOMEM(0x00030000)
@@ -193,6 +194,15 @@
 #define EP93XX_SYSCON_CLKDIV_ESEL       (1<<14)
 #define EP93XX_SYSCON_CLKDIV_PSEL       (1<<13)
 #define EP93XX_SYSCON_CLKDIV_PDIV_SHIFT 8
+#define EP93XX_SYSCON_I2SCLKDIV         EP93XX_SYSCON_REG(0x8c)
+#define EP93XX_SYSCON_I2SCLKDIV_SENA    (1<<31)
+#define EP93XX_SYSCON_I2SCLKDIV_ORIDE   (1<<29)
+#define EP93XX_SYSCON_I2SCLKDIV_SPOL    (1<<19)
+#define EP93XX_I2SCLKDIV_SDIV           (1 << 16)
+#define EP93XX_I2SCLKDIV_LRDIV32        (0 << 17)
+#define EP93XX_I2SCLKDIV_LRDIV64        (1 << 17)
+#define EP93XX_I2SCLKDIV_LRDIV128       (2 << 17)
+#define EP93XX_I2SCLKDIV_LRDIV_MASK     (3 << 17)
 #define EP93XX_SYSCON_KEYTCHCLKDIV      EP93XX_SYSCON_REG(0x90)
 #define EP93XX_SYSCON_KEYTCHCLKDIV_TSEN (1<<31)
 #define EP93XX_SYSCON_KEYTCHCLKDIV_ADIV (1<<16)
diff --git a/arch/arm/mach-ep93xx/include/mach/platform.h b/arch/arm/mach-ep93xx/include/mach/platform.h
index c6dc14dbca18..0f2822d7ec8b 100644
--- a/arch/arm/mach-ep93xx/include/mach/platform.h
+++ b/arch/arm/mach-ep93xx/include/mach/platform.h
@@ -43,6 +43,9 @@ void ep93xx_pwm_release_gpio(struct platform_device *pdev);
 void ep93xx_register_keypad(struct ep93xx_keypad_platform_data *data);
 int ep93xx_keypad_acquire_gpio(struct platform_device *pdev);
 void ep93xx_keypad_release_gpio(struct platform_device *pdev);
+void ep93xx_register_i2s(void);
+int ep93xx_i2s_acquire(unsigned i2s_pins, unsigned i2s_config);
+void ep93xx_i2s_release(void);
 
 void ep93xx_init_devices(void);
 extern struct sys_timer ep93xx_timer;