davinci: Audio support for DA850/OMAP-L138 EVM

Define resources for McASP used on DA850/OMAP-L138 EVM, add platform
device defintion and Pin Mux configurations.
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-davinci/board-da850-evm.c

@@ -38,6 +38,28 @@ static struct davinci_uart_config da850_evm_uart_config __initdata = {
 	.enabled_uarts = 0x7,
 };
 
+/* davinci da850 evm audio machine driver */
+static u8 da850_iis_serializer_direction[] = {
+	INACTIVE_MODE,	INACTIVE_MODE,	INACTIVE_MODE,	INACTIVE_MODE,
+	INACTIVE_MODE,	INACTIVE_MODE,	INACTIVE_MODE,	INACTIVE_MODE,
+	INACTIVE_MODE,	INACTIVE_MODE,	INACTIVE_MODE,	TX_MODE,
+	RX_MODE,	INACTIVE_MODE,	INACTIVE_MODE,	INACTIVE_MODE,
+};
+
+static struct snd_platform_data da850_evm_snd_data = {
+	.tx_dma_offset	= 0x2000,
+	.rx_dma_offset	= 0x2000,
+	.op_mode	= DAVINCI_MCASP_IIS_MODE,
+	.num_serializer	= ARRAY_SIZE(da850_iis_serializer_direction),
+	.tdm_slots	= 2,
+	.serial_dir	= da850_iis_serializer_direction,
+	.eventq_no	= EVENTQ_1,
+	.version	= MCASP_VERSION_2,
+	.txnumevt	= 1,
+	.rxnumevt	= 1,
+};
+
+
 static __init void da850_evm_init(void)
 {
 	struct davinci_soc_info *soc_info = &davinci_soc_info;
@@ -86,6 +108,13 @@ static __init void da850_evm_init(void)
 	 */
 	__raw_writel(0, IO_ADDRESS(DA8XX_UART1_BASE) + 0x30);
 	__raw_writel(0, IO_ADDRESS(DA8XX_UART0_BASE) + 0x30);
+
+	ret = da8xx_pinmux_setup(da850_mcasp_pins);
+	if (ret)
+		pr_warning("da850_evm_init: mcasp mux setup failed: %d\n",
+				ret);
+
+	da8xx_init_mcasp(0, &da850_evm_snd_data);
 }
 
 #ifdef CONFIG_SERIAL_8250_CONSOLE

arch/arm/mach-davinci/da850.c

@@ -290,6 +290,13 @@ static struct clk emac_clk = {
 	.psc_ctlr	= 1,
 };
 
+static struct clk mcasp_clk = {
+	.name		= "mcasp",
+	.parent		= &pll0_sysclk2,
+	.lpsc		= DA8XX_LPSC1_McASP0,
+	.psc_ctlr	= 1,
+};
+
 static struct davinci_clk da850_clks[] = {
 	CLK(NULL,		"ref",		&ref_clk),
 	CLK(NULL,		"pll0",		&pll0_clk),
@@ -327,6 +334,7 @@ static struct davinci_clk da850_clks[] = {
 	CLK(NULL,		"arm",		&arm_clk),
 	CLK(NULL,		"rmii",		&rmii_clk),
 	CLK("davinci_emac.1",	NULL,		&emac_clk),
+	CLK("davinci-mcasp.0",	NULL,		&mcasp_clk),
 	CLK(NULL,		NULL,		NULL),
 };
 
@@ -373,6 +381,30 @@ static const struct mux_config da850_pins[] = {
 	MUX_CFG(DA850, MII_RXD_0,	3,	28,	15,	8,	false)
 	MUX_CFG(DA850, MDIO_CLK,	4,	0,	15,	8,	false)
 	MUX_CFG(DA850, MDIO_D,		4,	4,	15,	8,	false)
+	/* McASP function */
+	MUX_CFG(DA850,	ACLKR,		0,	0,	15,	1,	false)
+	MUX_CFG(DA850,	ACLKX,		0,	4,	15,	1,	false)
+	MUX_CFG(DA850,	AFSR,		0,	8,	15,	1,	false)
+	MUX_CFG(DA850,	AFSX,		0,	12,	15,	1,	false)
+	MUX_CFG(DA850,	AHCLKR,		0,	16,	15,	1,	false)
+	MUX_CFG(DA850,	AHCLKX,		0,	20,	15,	1,	false)
+	MUX_CFG(DA850,	AMUTE,		0,	24,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_15,		1,	0,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_14,		1,	4,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_13,		1,	8,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_12,		1,	12,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_11,		1,	16,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_10,		1,	20,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_9,		1,	24,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_8,		1,	28,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_7,		2,	0,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_6,		2,	4,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_5,		2,	8,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_4,		2,	12,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_3,		2,	16,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_2,		2,	20,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_1,		2,	24,	15,	1,	false)
+	MUX_CFG(DA850,	AXR_0,		2,	28,	15,	1,	false)
 #endif
 };
 
@@ -410,6 +442,13 @@ const short da850_cpgmac_pins[] __initdata = {
 	-1
 };
 
+const short da850_mcasp_pins[] __initdata = {
+	DA850_AHCLKX, DA850_ACLKX, DA850_AFSX,
+	DA850_AHCLKR, DA850_ACLKR, DA850_AFSR, DA850_AMUTE,
+	DA850_AXR_11, DA850_AXR_12,
+	-1
+};
+
 /* FIQ are pri 0-1; otherwise 2-7, with 7 lowest priority */
 static u8 da850_default_priorities[DA850_N_CP_INTC_IRQ] = {
 	[IRQ_DA8XX_COMMTX]		= 7,

arch/arm/mach-davinci/devices-da8xx.c

@@ -309,6 +309,34 @@ static struct platform_device da830_mcasp1_device = {
 	.resource	= da830_mcasp1_resources,
 };
 
+static struct resource da850_mcasp_resources[] = {
+	{
+		.name	= "mcasp",
+		.start	= DAVINCI_DA8XX_MCASP0_REG_BASE,
+		.end	= DAVINCI_DA8XX_MCASP0_REG_BASE + (SZ_1K * 12) - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	/* TX event */
+	{
+		.start	= DAVINCI_DA8XX_DMA_MCASP0_AXEVT,
+		.end	= DAVINCI_DA8XX_DMA_MCASP0_AXEVT,
+		.flags	= IORESOURCE_DMA,
+	},
+	/* RX event */
+	{
+		.start	= DAVINCI_DA8XX_DMA_MCASP0_AREVT,
+		.end	= DAVINCI_DA8XX_DMA_MCASP0_AREVT,
+		.flags	= IORESOURCE_DMA,
+	},
+};
+
+static struct platform_device da850_mcasp_device = {
+	.name		= "davinci-mcasp",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(da850_mcasp_resources),
+	.resource	= da850_mcasp_resources,
+};
+
 int __init da8xx_register_emac(void)
 {
 	return platform_device_register(&da8xx_emac_device);
@@ -316,8 +344,12 @@ int __init da8xx_register_emac(void)
 
 void __init da8xx_init_mcasp(int id, struct snd_platform_data *pdata)
 {
-	if (id == 1) { /* DA830/OMAP-L137 has 3 instances of McASP */
+	/* DA830/OMAP-L137 has 3 instances of McASP */
+	if (cpu_is_davinci_da830() && id == 1) {
 		da830_mcasp1_device.dev.platform_data = pdata;
 		platform_device_register(&da830_mcasp1_device);
+	} else if (cpu_is_davinci_da850()) {
+		da850_mcasp_device.dev.platform_data = pdata;
+		platform_device_register(&da850_mcasp_device);
 	}
 }

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 da850/da830 McASP0  register banks */
+#define DAVINCI_DA8XX_MCASP0_REG_BASE	0x01D00000
+
 /* Bases of da830 McASP1 register banks */
 #define DAVINCI_DA830_MCASP1_REG_BASE	0x01D04000
 
@@ -29,6 +32,10 @@
 #define	DAVINCI_DM646X_DMA_MCASP0_AREVT0	9
 #define	DAVINCI_DM646X_DMA_MCASP1_AXEVT1	12
 
+/* EDMA channels of da850/da830 McASP0 */
+#define	DAVINCI_DA8XX_DMA_MCASP0_AREVT	0
+#define	DAVINCI_DA8XX_DMA_MCASP0_AXEVT	1
+
 /* EDMA channels of da830 McASP1 */
 #define	DAVINCI_DA830_DMA_MCASP1_AREVT	2
 #define	DAVINCI_DA830_DMA_MCASP1_AXEVT	3

arch/arm/mach-davinci/include/mach/mux.h

@@ -750,6 +750,31 @@ enum davinci_da850_index {
 	DA850_MII_RXD_0,
 	DA850_MDIO_CLK,
 	DA850_MDIO_D,
+
+	/* McASP function */
+	DA850_ACLKR,
+	DA850_ACLKX,
+	DA850_AFSR,
+	DA850_AFSX,
+	DA850_AHCLKR,
+	DA850_AHCLKX,
+	DA850_AMUTE,
+	DA850_AXR_15,
+	DA850_AXR_14,
+	DA850_AXR_13,
+	DA850_AXR_12,
+	DA850_AXR_11,
+	DA850_AXR_10,
+	DA850_AXR_9,
+	DA850_AXR_8,
+	DA850_AXR_7,
+	DA850_AXR_6,
+	DA850_AXR_5,
+	DA850_AXR_4,
+	DA850_AXR_3,
+	DA850_AXR_2,
+	DA850_AXR_1,
+	DA850_AXR_0,
 };
 
 #ifdef CONFIG_DAVINCI_MUX