linux-sg2042/arch/arm/plat-orion/common.c

/*
 * arch/arm/plat-orion/common.c
 *
 * Marvell Orion SoC common setup code used by multiple mach-/common.c
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/serial_8250.h>
#include <linux/mbus.h>
#include <linux/mv643xx_eth.h>
#include <linux/mv643xx_i2c.h>
#include <net/dsa.h>
#include <linux/spi/orion_spi.h>
#include <plat/orion_wdt.h>

/* Fill in the resources structure and link it into the platform
   device structure. There is always a memory region, and nearly
   always an interrupt.*/
static void fill_resources(struct platform_device *device,
			   struct resource *resources,
			   resource_size_t mapbase,
			   resource_size_t size,
			   unsigned int irq)
{
	device->resource = resources;
	device->num_resources = 1;
	resources[0].flags = IORESOURCE_MEM;
	resources[0].start = mapbase;
	resources[0].end = mapbase + size;

	if (irq != NO_IRQ) {
		device->num_resources++;
		resources[1].flags = IORESOURCE_IRQ;
		resources[1].start = irq;
		resources[1].end = irq;
	}
}

/*****************************************************************************
 * UART
 ****************************************************************************/
static void __init uart_complete(
	struct platform_device *orion_uart,
	struct plat_serial8250_port *data,
	struct resource *resources,
	unsigned int membase,
	resource_size_t mapbase,
	unsigned int irq,
	unsigned int uartclk)
{
	data->mapbase = mapbase;
	data->membase = (void __iomem *)membase;
	data->irq = irq;
	data->uartclk = uartclk;
	orion_uart->dev.platform_data = data;

	fill_resources(orion_uart, resources, mapbase, 0xff, irq);
	platform_device_register(orion_uart);
}

/*****************************************************************************
 * UART0
 ****************************************************************************/
static struct plat_serial8250_port orion_uart0_data[] = {
	{
		.flags		= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
	}, {
	},
};

static struct resource orion_uart0_resources[2];

static struct platform_device orion_uart0 = {
	.name			= "serial8250",
	.id			= PLAT8250_DEV_PLATFORM,
};

void __init orion_uart0_init(unsigned int membase,
			     resource_size_t mapbase,
			     unsigned int irq,
			     unsigned int uartclk)
{
	uart_complete(&orion_uart0, orion_uart0_data, orion_uart0_resources,
		      membase, mapbase, irq, uartclk);
}

/*****************************************************************************
 * UART1
 ****************************************************************************/
static struct plat_serial8250_port orion_uart1_data[] = {
	{
		.flags		= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
	}, {
	},
};

static struct resource orion_uart1_resources[2];

static struct platform_device orion_uart1 = {
	.name			= "serial8250",
	.id			= PLAT8250_DEV_PLATFORM1,
};

void __init orion_uart1_init(unsigned int membase,
			     resource_size_t mapbase,
			     unsigned int irq,
			     unsigned int uartclk)
{
	uart_complete(&orion_uart1, orion_uart1_data, orion_uart1_resources,
		      membase, mapbase, irq, uartclk);
}

/*****************************************************************************
 * UART2
 ****************************************************************************/
static struct plat_serial8250_port orion_uart2_data[] = {
	{
		.flags		= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
	}, {
	},
};

static struct resource orion_uart2_resources[2];

static struct platform_device orion_uart2 = {
	.name			= "serial8250",
	.id			= PLAT8250_DEV_PLATFORM2,
};

void __init orion_uart2_init(unsigned int membase,
			     resource_size_t mapbase,
			     unsigned int irq,
			     unsigned int uartclk)
{
	uart_complete(&orion_uart2, orion_uart2_data, orion_uart2_resources,
		      membase, mapbase, irq, uartclk);
}

/*****************************************************************************
 * UART3
 ****************************************************************************/
static struct plat_serial8250_port orion_uart3_data[] = {
	{
		.flags		= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
	}, {
	},
};

static struct resource orion_uart3_resources[2];

static struct platform_device orion_uart3 = {
	.name			= "serial8250",
	.id			= 3,
};

void __init orion_uart3_init(unsigned int membase,
			     resource_size_t mapbase,
			     unsigned int irq,
			     unsigned int uartclk)
{
	uart_complete(&orion_uart3, orion_uart3_data, orion_uart3_resources,
		      membase, mapbase, irq, uartclk);
}

/*****************************************************************************
 * SoC RTC
 ****************************************************************************/
static struct resource orion_rtc_resource[2];

void __init orion_rtc_init(unsigned long mapbase,
			   unsigned long irq)
{
	orion_rtc_resource[0].start = mapbase;
	orion_rtc_resource[0].end = mapbase + SZ_32 - 1;
	orion_rtc_resource[0].flags = IORESOURCE_MEM;
	orion_rtc_resource[1].start = irq;
	orion_rtc_resource[1].end = irq;
	orion_rtc_resource[1].flags = IORESOURCE_IRQ;

	platform_device_register_simple("rtc-mv", -1, orion_rtc_resource, 2);
}

/*****************************************************************************
 * GE
 ****************************************************************************/
static __init void ge_complete(
	struct mv643xx_eth_shared_platform_data *orion_ge_shared_data,
	struct mbus_dram_target_info *mbus_dram_info, int tclk,
	struct resource *orion_ge_resource, unsigned long irq,
	struct platform_device *orion_ge_shared,
	struct mv643xx_eth_platform_data *eth_data,
	struct platform_device *orion_ge)
{
	orion_ge_shared_data->dram = mbus_dram_info;
	orion_ge_shared_data->t_clk = tclk;
	orion_ge_resource->start = irq;
	orion_ge_resource->end = irq;
	eth_data->shared = orion_ge_shared;
	orion_ge->dev.platform_data = eth_data;

	platform_device_register(orion_ge_shared);
	platform_device_register(orion_ge);
}

/*****************************************************************************
 * GE00
 ****************************************************************************/
struct mv643xx_eth_shared_platform_data orion_ge00_shared_data;

static struct resource orion_ge00_shared_resources[] = {
	{
		.name	= "ge00 base",
	}, {
		.name	= "ge00 err irq",
	},
};

static struct platform_device orion_ge00_shared = {
	.name		= MV643XX_ETH_SHARED_NAME,
	.id		= 0,
	.dev		= {
		.platform_data	= &orion_ge00_shared_data,
	},
};

static struct resource orion_ge00_resources[] = {
	{
		.name	= "ge00 irq",
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device orion_ge00 = {
	.name		= MV643XX_ETH_NAME,
	.id		= 0,
	.num_resources	= 1,
	.resource	= orion_ge00_resources,
	.dev		= {
		.coherent_dma_mask	= DMA_BIT_MASK(32),
	},
};

void __init orion_ge00_init(struct mv643xx_eth_platform_data *eth_data,
			    struct mbus_dram_target_info *mbus_dram_info,
			    unsigned long mapbase,
			    unsigned long irq,
			    unsigned long irq_err,
			    int tclk)
{
	fill_resources(&orion_ge00_shared, orion_ge00_shared_resources,
		       mapbase + 0x2000, SZ_16K - 1, irq_err);
	ge_complete(&orion_ge00_shared_data, mbus_dram_info, tclk,
		    orion_ge00_resources, irq, &orion_ge00_shared,
		    eth_data, &orion_ge00);
}

/*****************************************************************************
 * GE01
 ****************************************************************************/
struct mv643xx_eth_shared_platform_data orion_ge01_shared_data = {
	.shared_smi	= &orion_ge00_shared,
};

static struct resource orion_ge01_shared_resources[] = {
	{
		.name	= "ge01 base",
	}, {
		.name	= "ge01 err irq",
	},
};

static struct platform_device orion_ge01_shared = {
	.name		= MV643XX_ETH_SHARED_NAME,
	.id		= 1,
	.dev		= {
		.platform_data	= &orion_ge01_shared_data,
	},
};

static struct resource orion_ge01_resources[] = {
	{
		.name	= "ge01 irq",
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device orion_ge01 = {
	.name		= MV643XX_ETH_NAME,
	.id		= 1,
	.num_resources	= 1,
	.resource	= orion_ge01_resources,
	.dev		= {
		.coherent_dma_mask	= DMA_BIT_MASK(32),
	},
};

void __init orion_ge01_init(struct mv643xx_eth_platform_data *eth_data,
			    struct mbus_dram_target_info *mbus_dram_info,
			    unsigned long mapbase,
			    unsigned long irq,
			    unsigned long irq_err,
			    int tclk)
{
	fill_resources(&orion_ge01_shared, orion_ge01_shared_resources,
		       mapbase + 0x2000, SZ_16K - 1, irq_err);
	ge_complete(&orion_ge01_shared_data, mbus_dram_info, tclk,
		    orion_ge01_resources, irq, &orion_ge01_shared,
		    eth_data, &orion_ge01);
}

/*****************************************************************************
 * GE10
 ****************************************************************************/
struct mv643xx_eth_shared_platform_data orion_ge10_shared_data = {
	.shared_smi	= &orion_ge00_shared,
};

static struct resource orion_ge10_shared_resources[] = {
	{
		.name	= "ge10 base",
	}, {
		.name	= "ge10 err irq",
	},
};

static struct platform_device orion_ge10_shared = {
	.name		= MV643XX_ETH_SHARED_NAME,
	.id		= 1,
	.dev		= {
		.platform_data	= &orion_ge10_shared_data,
	},
};

static struct resource orion_ge10_resources[] = {
	{
		.name	= "ge10 irq",
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device orion_ge10 = {
	.name		= MV643XX_ETH_NAME,
	.id		= 1,
	.num_resources	= 2,
	.resource	= orion_ge10_resources,
	.dev		= {
		.coherent_dma_mask	= DMA_BIT_MASK(32),
	},
};

void __init orion_ge10_init(struct mv643xx_eth_platform_data *eth_data,
			    struct mbus_dram_target_info *mbus_dram_info,
			    unsigned long mapbase,
			    unsigned long irq,
			    unsigned long irq_err,
			    int tclk)
{
	fill_resources(&orion_ge10_shared, orion_ge10_shared_resources,
		       mapbase + 0x2000, SZ_16K - 1, irq_err);
	ge_complete(&orion_ge10_shared_data, mbus_dram_info, tclk,
		    orion_ge10_resources, irq, &orion_ge10_shared,
		    eth_data, &orion_ge10);
}

/*****************************************************************************
 * GE11
 ****************************************************************************/
struct mv643xx_eth_shared_platform_data orion_ge11_shared_data = {
	.shared_smi	= &orion_ge00_shared,
};

static struct resource orion_ge11_shared_resources[] = {
	{
		.name	= "ge11 base",
	}, {
		.name	= "ge11 err irq",
	},
};

static struct platform_device orion_ge11_shared = {
	.name		= MV643XX_ETH_SHARED_NAME,
	.id		= 1,
	.dev		= {
		.platform_data	= &orion_ge11_shared_data,
	},
};

static struct resource orion_ge11_resources[] = {
	{
		.name	= "ge11 irq",
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device orion_ge11 = {
	.name		= MV643XX_ETH_NAME,
	.id		= 1,
	.num_resources	= 2,
	.resource	= orion_ge11_resources,
	.dev		= {
		.coherent_dma_mask	= DMA_BIT_MASK(32),
	},
};

void __init orion_ge11_init(struct mv643xx_eth_platform_data *eth_data,
			    struct mbus_dram_target_info *mbus_dram_info,
			    unsigned long mapbase,
			    unsigned long irq,
			    unsigned long irq_err,
			    int tclk)
{
	fill_resources(&orion_ge11_shared, orion_ge11_shared_resources,
		       mapbase + 0x2000, SZ_16K - 1, irq_err);
	ge_complete(&orion_ge11_shared_data, mbus_dram_info, tclk,
		    orion_ge11_resources, irq, &orion_ge11_shared,
		    eth_data, &orion_ge11);
}

/*****************************************************************************
 * Ethernet switch
 ****************************************************************************/
static struct resource orion_switch_resources[] = {
	{
		.start	= 0,
		.end	= 0,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device orion_switch_device = {
	.name		= "dsa",
	.id		= 0,
	.num_resources	= 0,
	.resource	= orion_switch_resources,
};

void __init orion_ge00_switch_init(struct dsa_platform_data *d, int irq)
{
	int i;

	if (irq != NO_IRQ) {
		orion_switch_resources[0].start = irq;
		orion_switch_resources[0].end = irq;
		orion_switch_device.num_resources = 1;
	}

	d->netdev = &orion_ge00.dev;
	for (i = 0; i < d->nr_chips; i++)
		d->chip[i].mii_bus = &orion_ge00_shared.dev;
	orion_switch_device.dev.platform_data = d;

	platform_device_register(&orion_switch_device);
}

/*****************************************************************************
 * I2C
 ****************************************************************************/
static struct mv64xxx_i2c_pdata orion_i2c_pdata = {
	.freq_n		= 3,
	.timeout	= 1000, /* Default timeout of 1 second */
};

static struct resource orion_i2c_resources[2];

static struct platform_device orion_i2c = {
	.name		= MV64XXX_I2C_CTLR_NAME,
	.id		= 0,
	.dev		= {
		.platform_data	= &orion_i2c_pdata,
	},
};

static struct mv64xxx_i2c_pdata orion_i2c_1_pdata = {
	.freq_n		= 3,
	.timeout	= 1000, /* Default timeout of 1 second */
};

static struct resource orion_i2c_1_resources[2];

static struct platform_device orion_i2c_1 = {
	.name		= MV64XXX_I2C_CTLR_NAME,
	.id		= 1,
	.dev		= {
		.platform_data	= &orion_i2c_1_pdata,
	},
};

void __init orion_i2c_init(unsigned long mapbase,
			   unsigned long irq,
			   unsigned long freq_m)
{
	orion_i2c_pdata.freq_m = freq_m;
	fill_resources(&orion_i2c, orion_i2c_resources, mapbase,
		       SZ_32 - 1, irq);
	platform_device_register(&orion_i2c);
}

void __init orion_i2c_1_init(unsigned long mapbase,
			     unsigned long irq,
			     unsigned long freq_m)
{
	orion_i2c_1_pdata.freq_m = freq_m;
	fill_resources(&orion_i2c_1, orion_i2c_1_resources, mapbase,
		       SZ_32 - 1, irq);
	platform_device_register(&orion_i2c_1);
}

/*****************************************************************************
 * SPI
 ****************************************************************************/
static struct orion_spi_info orion_spi_plat_data;
static struct resource orion_spi_resources;

static struct platform_device orion_spi = {
	.name		= "orion_spi",
	.id		= 0,
	.dev		= {
		.platform_data	= &orion_spi_plat_data,
	},
};

static struct orion_spi_info orion_spi_1_plat_data;
static struct resource orion_spi_1_resources;

static struct platform_device orion_spi_1 = {
	.name		= "orion_spi",
	.id		= 1,
	.dev		= {
		.platform_data	= &orion_spi_1_plat_data,
	},
};

/* Note: The SPI silicon core does have interrupts. However the
 * current Linux software driver does not use interrupts. */

void __init orion_spi_init(unsigned long mapbase,
			   unsigned long tclk)
{
	orion_spi_plat_data.tclk = tclk;
	fill_resources(&orion_spi, &orion_spi_resources,
		       mapbase, SZ_512 - 1, NO_IRQ);
	platform_device_register(&orion_spi);
}

void __init orion_spi_1_init(unsigned long mapbase,
			     unsigned long tclk)
{
	orion_spi_1_plat_data.tclk = tclk;
	fill_resources(&orion_spi_1, &orion_spi_1_resources,
		       mapbase, SZ_512 - 1, NO_IRQ);
	platform_device_register(&orion_spi_1);
}

/*****************************************************************************
 * Watchdog
 ****************************************************************************/
static struct orion_wdt_platform_data orion_wdt_data;

static struct platform_device orion_wdt_device = {
	.name		= "orion_wdt",
	.id		= -1,
	.dev		= {
		.platform_data	= &orion_wdt_data,
	},
	.num_resources	= 0,
};

void __init orion_wdt_init(unsigned long tclk)
{
	orion_wdt_data.tclk = tclk;
	platform_device_register(&orion_wdt_device);
}