diff mbox

[1/2] da850: Support for TI's PRU SoftUART Emulation

Message ID 1291389108-25356-1-git-send-email-subhasish@mistralsolutions.com (mailing list archive)
State Changes Requested
Headers show

Commit Message

Subhasish Ghosh Dec. 3, 2010, 3:11 p.m. UTC 
None
diff mbox

Patch

diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
index 63916b9..85508c2 100644
--- a/arch/arm/mach-davinci/da850.c
+++ b/arch/arm/mach-davinci/da850.c
@@ -238,6 +238,12 @@  static struct clk tptc2_clk = {
 	.flags		= ALWAYS_ENABLED,
 };
 
+static struct clk pru_clk = {
+	.name	= "pruss",
+	.parent	= &pll0_sysclk2,
+	.lpsc	= DA8XX_LPSC0_DMAX,
+};
+
 static struct clk uart0_clk = {
 	.name		= "uart0",
 	.parent		= &pll0_sysclk2,
@@ -318,6 +324,14 @@  static struct clk mcasp_clk = {
 	.flags		= DA850_CLK_ASYNC3,
 };
 
+static struct clk mcasp_pru_clk = {
+	.name		= "mcasp_pru",
+	.parent		= &pll0_sysclk2,
+	.lpsc		= DA8XX_LPSC1_McASP0,
+	.gpsc		= 1,
+	.flags		= DA850_CLK_ASYNC3,
+};
+
 static struct clk lcdc_clk = {
 	.name		= "lcdc",
 	.parent		= &pll0_sysclk2,
@@ -373,6 +387,7 @@  static struct clk_lookup da850_clks[] = {
 	CLK(NULL,		"tpcc1",	&tpcc1_clk),
 	CLK(NULL,		"tptc2",	&tptc2_clk),
 	CLK(NULL,		"uart0",	&uart0_clk),
+	CLK(NULL,		"pruss",	&pru_clk),
 	CLK(NULL,		"uart1",	&uart1_clk),
 	CLK(NULL,		"uart2",	&uart2_clk),
 	CLK(NULL,		"aintc",	&aintc_clk),
@@ -381,6 +396,7 @@  static struct clk_lookup da850_clks[] = {
 	CLK(NULL,		"emif3",	&emif3_clk),
 	CLK(NULL,		"arm",		&arm_clk),
 	CLK(NULL,		"rmii",		&rmii_clk),
+	CLK(NULL,		"mcasp_pru",	&mcasp_pru_clk),
 	CLK("davinci_emac.1",	NULL,		&emac_clk),
 	CLK("davinci-mcasp.0",	NULL,		&mcasp_clk),
 	CLK("da8xx_lcdc.0",	NULL,		&lcdc_clk),
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index 9eec630..25de36d 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -85,7 +85,100 @@  struct platform_device da8xx_serial_device = {
 	},
 };
 
-static const s8 da8xx_queue_tc_mapping[][2] = {
+
+#define OMAPL138_PRU_MEM_BASE	   0x01C30000
+
+#define OMAPL138_INT_PRU_SUART_1 IRQ_DA8XX_EVTOUT0
+#define OMAPL138_INT_PRU_SUART_2 IRQ_DA8XX_EVTOUT1
+#define OMAPL138_INT_PRU_SUART_3 IRQ_DA8XX_EVTOUT2
+#define OMAPL138_INT_PRU_SUART_4 IRQ_DA8XX_EVTOUT3
+#define OMAPL138_INT_PRU_SUART_5 IRQ_DA8XX_EVTOUT4
+#define OMAPL138_INT_PRU_SUART_6 IRQ_DA8XX_EVTOUT5
+#define OMAPL138_INT_PRU_SUART_7 IRQ_DA8XX_EVTOUT6
+#define OMAPL138_INT_PRU_SUART_8 IRQ_DA8XX_EVTOUT7
+
+static struct resource omapl138_pru_suart_resources[] = {
+	{
+		.name	= "omapl_pru_suart",
+		.start	= OMAPL138_PRU_MEM_BASE,
+		.end	= OMAPL138_PRU_MEM_BASE + 0xFFFF,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= DAVINCI_DA8XX_MCASP0_REG_BASE,
+		.end	= DAVINCI_DA8XX_MCASP0_REG_BASE + (SZ_1K * 12) - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= DA8XX_PSC0_BASE,
+		.end	= DA8XX_PSC0_BASE + (SZ_1K * 3) - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= DA8XX_PSC1_BASE,
+		.end	= DA8XX_PSC1_BASE + (SZ_1K * 3) - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= DA8XX_SHARED_RAM_BASE,
+		.end	= DA8XX_SHARED_RAM_BASE + (SZ_1K * 8) - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= OMAPL138_INT_PRU_SUART_1,
+		.end	= OMAPL138_INT_PRU_SUART_1,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= OMAPL138_INT_PRU_SUART_2,
+		.end	= OMAPL138_INT_PRU_SUART_2,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= OMAPL138_INT_PRU_SUART_3,
+		.end	= OMAPL138_INT_PRU_SUART_3,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= OMAPL138_INT_PRU_SUART_4,
+		.end	= OMAPL138_INT_PRU_SUART_4,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= OMAPL138_INT_PRU_SUART_5,
+		.end	= OMAPL138_INT_PRU_SUART_5,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= OMAPL138_INT_PRU_SUART_6,
+		.end	= OMAPL138_INT_PRU_SUART_6,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= OMAPL138_INT_PRU_SUART_7,
+		.end	= OMAPL138_INT_PRU_SUART_7,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{
+		.start	= OMAPL138_INT_PRU_SUART_8,
+		.end	= OMAPL138_INT_PRU_SUART_8,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device omapl_pru_suart_device = {
+	.name			=	"davinci_pru_suart",
+	.id				=	-1,
+	.num_resources	=	ARRAY_SIZE(omapl138_pru_suart_resources),
+	.resource		=	omapl138_pru_suart_resources,
+};
+
+int __init da8xx_register_pru_suart(void)
+{
+	return platform_device_register(&omapl_pru_suart_device);
+}
+
+static  const s8 da8xx_queue_tc_mapping[][2] = {
 	/* {event queue no, TC no} */
 	{0, 0},
 	{1, 1},
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index 4247b3f..940dbd6 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -74,6 +74,7 @@  int da8xx_register_watchdog(void);
 int da8xx_register_usb20(unsigned mA, unsigned potpgt);
 int da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata);
 int da8xx_register_emac(void);
+int da8xx_register_pru_suart(void);
 int da8xx_register_lcdc(struct da8xx_lcdc_platform_data *pdata);
 int da8xx_register_mmcsd0(struct davinci_mmc_config *config);
 int da850_register_mmcsd1(struct davinci_mmc_config *config);
diff --git a/arch/arm/mach-davinci/include/mach/memory.h b/arch/arm/mach-davinci/include/mach/memory.h
index 22eb97c..d3e48d9 100644
--- a/arch/arm/mach-davinci/include/mach/memory.h
+++ b/arch/arm/mach-davinci/include/mach/memory.h
@@ -22,6 +22,7 @@ 
  **************************************************************************/
 #define DAVINCI_DDR_BASE	0x80000000
 #define DA8XX_DDR_BASE		0xc0000000
+#define DA8XX_SHARED_RAM_BASE		0x80000000
 
 #if defined(CONFIG_ARCH_DAVINCI_DA8XX) && defined(CONFIG_ARCH_DAVINCI_DMx)
 #error Cannot enable DaVinci and DA8XX platforms concurrently
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 212eb4c..407624e 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -199,6 +199,9 @@ 
 /* TI OMAP-UART */
 #define PORT_OMAP	96
 
+/* omapl pru uart emulation */
+#define PORT_OMAPL_PRU_SUART 97
+
 #ifdef __KERNEL__
 
 #include <linux/compiler.h>