davinci: Audio support for DA830 EVM

Define resources for McASP1 used on DA830/OMAP-L137 EVM, add platform
device defintion, initialization function.  Additionally, this patch
also adds version and FIFO related members to platform data structure.

Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

5 files changed, 85 insertions, 3 deletions

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 90256693b8d8..a45340de7465 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -23,6 +23,7 @@
 #include <mach/irqs.h>
 #include <mach/cp_intc.h>
 #include <mach/da8xx.h>
+#include <mach/asp.h>
 
 #define DA830_EVM_PHY_MASK              0x0
 #define DA830_EVM_MDIO_FREQUENCY        2200000 /* PHY bus frequency */
@@ -51,6 +52,25 @@ static struct davinci_uart_config da830_evm_uart_config __initdata = {
         .enabled_uarts = 0x7,
 };
 
+static u8 da830_iis_serializer_direction[] = {
+        RX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
+        INACTIVE_MODE,  TX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,
+        INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
+};
+
+static struct snd_platform_data da830_evm_snd_data = {
+        .tx_dma_offset  = 0x2000,
+        .rx_dma_offset  = 0x2000,
+        .op_mode        = DAVINCI_MCASP_IIS_MODE,
+        .num_serializer = ARRAY_SIZE(da830_iis_serializer_direction),
+        .tdm_slots      = 2,
+        .serial_dir     = da830_iis_serializer_direction,
+        .eventq_no      = EVENTQ_0,
+        .version        = MCASP_VERSION_2,
+        .txnumevt       = 1,
+        .rxnumevt       = 1,
+};
+
 static __init void da830_evm_init(void)
 {
         struct davinci_soc_info *soc_info = &davinci_soc_info;
@@ -93,6 +113,13 @@ static __init void da830_evm_init(void)
         davinci_serial_init(&da830_evm_uart_config);
         i2c_register_board_info(1, da830_evm_i2c_devices,
                         ARRAY_SIZE(da830_evm_i2c_devices));
+
+        ret = da8xx_pinmux_setup(da830_mcasp1_pins);
+        if (ret)
+                pr_warning("da830_evm_init: mcasp1 mux setup failed: %d\n",
+                                ret);
+
+        da8xx_init_mcasp(1, &da830_evm_snd_data);
 }
 
 #ifdef CONFIG_SERIAL_8250_CONSOLE
diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c
index 3a9b6346c310..19b2748357fc 100644
--- a/arch/arm/mach-davinci/da830.c
+++ b/arch/arm/mach-davinci/da830.c
@@ -23,6 +23,7 @@
 #include <mach/common.h>
 #include <mach/time.h>
 #include <mach/da8xx.h>
+#include <mach/asp.h>
 
 #include "clock.h"
 #include "mux.h"
@@ -411,9 +412,9 @@ static struct davinci_clk da830_clks[] = {
         CLK("eqep.0",           NULL,           &eqep0_clk),
         CLK("eqep.1",           NULL,           &eqep1_clk),
         CLK("da830_lcdc",       NULL,           &lcdc_clk),
-        CLK("soc-audio.0",      NULL,           &mcasp0_clk),
-        CLK("soc-audio.1",      NULL,           &mcasp1_clk),
-        CLK("soc-audio.2",      NULL,           &mcasp2_clk),
+        CLK("davinci-mcasp.0",  NULL,           &mcasp0_clk),
+        CLK("davinci-mcasp.1",  NULL,           &mcasp1_clk),
+        CLK("davinci-mcasp.2",  NULL,           &mcasp2_clk),
         CLK("musb_hdrc",        NULL,           &usb20_clk),
         CLK(NULL,               "aemif",        &aemif_clk),
         CLK(NULL,               "aintc",        &aintc_clk),
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index 11c0971e13a6..fe0baafcf610 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -281,7 +281,43 @@ static struct platform_device da8xx_emac_device = {
         .resource       = da8xx_emac_resources,
 };
 
+static struct resource da830_mcasp1_resources[] = {
+        {
+                .name   = "mcasp1",
+                .start  = DAVINCI_DA830_MCASP1_REG_BASE,
+                .end    = DAVINCI_DA830_MCASP1_REG_BASE + (SZ_1K * 12) - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        /* TX event */
+        {
+                .start  = DAVINCI_DA830_DMA_MCASP1_AXEVT,
+                .end    = DAVINCI_DA830_DMA_MCASP1_AXEVT,
+                .flags  = IORESOURCE_DMA,
+        },
+        /* RX event */
+        {
+                .start  = DAVINCI_DA830_DMA_MCASP1_AREVT,
+                .end    = DAVINCI_DA830_DMA_MCASP1_AREVT,
+                .flags  = IORESOURCE_DMA,
+        },
+};
+
+static struct platform_device da830_mcasp1_device = {
+        .name           = "davinci-mcasp",
+        .id             = 1,
+        .num_resources  = ARRAY_SIZE(da830_mcasp1_resources),
+        .resource       = da830_mcasp1_resources,
+};
+
 int __init da8xx_register_emac(void)
 {
         return platform_device_register(&da8xx_emac_device);
 }
+
+void __init da8xx_init_mcasp(int id, struct snd_platform_data *pdata)
+{
+        if (id == 1) { /* DA830/OMAP-L137 has 3 instances of McASP */
+                da830_mcasp1_device.dev.platform_data = pdata;
+                platform_device_register(&da830_mcasp1_device);
+        }
+}
diff --git a/arch/arm/mach-davinci/include/mach/asp.h b/arch/arm/mach-davinci/include/mach/asp.h
index cdf1f4442330..f3c97ac3425c 100644
--- a/arch/arm/mach-davinci/include/mach/asp.h
+++ b/arch/arm/mach-davinci/include/mach/asp.h
@@ -15,6 +15,9 @@
 #define DAVINCI_DM646X_MCASP0_REG_BASE          0x01D01000
 #define DAVINCI_DM646X_MCASP1_REG_BASE          0x01D01800
 
+/* Bases of da830 McASP1 register banks */
+#define DAVINCI_DA830_MCASP1_REG_BASE   0x01D04000
+
 /* EDMA channels of dm644x and dm355 */
 #define DAVINCI_DMA_ASP0_TX     2
 #define DAVINCI_DMA_ASP0_RX     3
@@ -26,6 +29,10 @@
 #define DAVINCI_DM646X_DMA_MCASP0_AREVT0        9
 #define DAVINCI_DM646X_DMA_MCASP1_AXEVT1        12
 
+/* EDMA channels of da830 McASP1 */
+#define DAVINCI_DA830_DMA_MCASP1_AREVT  2
+#define DAVINCI_DA830_DMA_MCASP1_AXEVT  3
+
 /* Interrupts */
 #define DAVINCI_ASP0_RX_INT     IRQ_MBRINT
 #define DAVINCI_ASP0_TX_INT     IRQ_MBXINT
@@ -43,6 +50,14 @@ struct snd_platform_data {
         u8 op_mode;
         u8 num_serializer;
         u8 *serial_dir;
+        u8 version;
+        u8 txnumevt;
+        u8 rxnumevt;
+};
+
+enum {
+        MCASP_VERSION_1 = 0,    /* DM646x */
+        MCASP_VERSION_2,        /* DA8xx/OMAPL1x */
 };
 
 #define INACTIVE_MODE   0
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index a8cb5709848d..30c5c407ea85 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -15,6 +15,7 @@
 #include <mach/edma.h>
 #include <mach/i2c.h>
 #include <mach/emac.h>
+#include <mach/asp.h>
 
 /*
  * The cp_intc interrupt controller for the da8xx isn't in the same
@@ -65,6 +66,7 @@ int da8xx_register_edma(void);
 int da8xx_register_i2c(int instance, struct davinci_i2c_platform_data *pdata);
 int da8xx_register_watchdog(void);
 int da8xx_register_emac(void);
+void __init da8xx_init_mcasp(int id, struct snd_platform_data *pdata);
 
 extern struct platform_device da8xx_serial_device;
 extern struct emac_platform_data da8xx_emac_pdata;
@@ -100,6 +102,7 @@ extern const short da850_uart2_pins[];
 extern const short da850_i2c0_pins[];
 extern const short da850_i2c1_pins[];
 extern const short da850_cpgmac_pins[];
+extern const short da850_mcasp_pins[];
 
 int da8xx_pinmux_setup(const short pins[]);