common.c

/*
 * arch/arm/mach-dove/common.c
 *
 * Core functions for Marvell Dove 88AP510 System On Chip
 *
 * 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/delay.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/clk-provider.h>
#include <linux/ata_platform.h>
#include <linux/gpio.h>
#include <asm/page.h>
#include <asm/setup.h>
#include <asm/timex.h>
#include <asm/hardware/cache-tauros2.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <asm/mach/pci.h>
#include <mach/dove.h>
#include <mach/bridge-regs.h>
#include <asm/mach/arch.h>
#include <linux/irq.h>
#include <plat/time.h>
#include <plat/ehci-orion.h>
#include <plat/common.h>
#include <plat/addr-map.h>
#include "common.h"

static int get_tclk(void);

/*****************************************************************************
 * I/O Address Mapping
 ****************************************************************************/
static struct map_desc dove_io_desc[] __initdata = {
	{
		.virtual	= DOVE_SB_REGS_VIRT_BASE,
		.pfn		= __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE),
		.length		= DOVE_SB_REGS_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= DOVE_NB_REGS_VIRT_BASE,
		.pfn		= __phys_to_pfn(DOVE_NB_REGS_PHYS_BASE),
		.length		= DOVE_NB_REGS_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= DOVE_PCIE0_IO_VIRT_BASE,
		.pfn		= __phys_to_pfn(DOVE_PCIE0_IO_PHYS_BASE),
		.length		= DOVE_PCIE0_IO_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= DOVE_PCIE1_IO_VIRT_BASE,
		.pfn		= __phys_to_pfn(DOVE_PCIE1_IO_PHYS_BASE),
		.length		= DOVE_PCIE1_IO_SIZE,
		.type		= MT_DEVICE,
	},
};

void __init dove_map_io(void)
{
	iotable_init(dove_io_desc, ARRAY_SIZE(dove_io_desc));
}

/*****************************************************************************
 * CLK tree
 ****************************************************************************/
static struct clk *tclk;

static void __init clk_init(void)
{
	tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
				       get_tclk());
}

/*****************************************************************************
 * EHCI0
 ****************************************************************************/
void __init dove_ehci0_init(void)
{
	orion_ehci_init(DOVE_USB0_PHYS_BASE, IRQ_DOVE_USB0, EHCI_PHY_NA);
}

/*****************************************************************************
 * EHCI1
 ****************************************************************************/
void __init dove_ehci1_init(void)
{
	orion_ehci_1_init(DOVE_USB1_PHYS_BASE, IRQ_DOVE_USB1);
}

/*****************************************************************************
 * GE00
 ****************************************************************************/
void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data)
{
	orion_ge00_init(eth_data,
			DOVE_GE00_PHYS_BASE, IRQ_DOVE_GE00_SUM,
			0, get_tclk());
}

/*****************************************************************************
 * SoC RTC
 ****************************************************************************/
void __init dove_rtc_init(void)
{
	orion_rtc_init(DOVE_RTC_PHYS_BASE, IRQ_DOVE_RTC);
}

/*****************************************************************************
 * SATA
 ****************************************************************************/
void __init dove_sata_init(struct mv_sata_platform_data *sata_data)
{
	orion_sata_init(sata_data, DOVE_SATA_PHYS_BASE, IRQ_DOVE_SATA);

}

/*****************************************************************************
 * UART0
 ****************************************************************************/
void __init dove_uart0_init(void)
{
	orion_uart0_init(DOVE_UART0_VIRT_BASE, DOVE_UART0_PHYS_BASE,
			 IRQ_DOVE_UART_0, get_tclk());
}

/*****************************************************************************
 * UART1
 ****************************************************************************/
void __init dove_uart1_init(void)
{
	orion_uart1_init(DOVE_UART1_VIRT_BASE, DOVE_UART1_PHYS_BASE,
			 IRQ_DOVE_UART_1, get_tclk());
}

/*****************************************************************************
 * UART2
 ****************************************************************************/
void __init dove_uart2_init(void)
{
	orion_uart2_init(DOVE_UART2_VIRT_BASE, DOVE_UART2_PHYS_BASE,
			 IRQ_DOVE_UART_2, get_tclk());
}

/*****************************************************************************
 * UART3
 ****************************************************************************/
void __init dove_uart3_init(void)
{
	orion_uart3_init(DOVE_UART3_VIRT_BASE, DOVE_UART3_PHYS_BASE,
			 IRQ_DOVE_UART_3, get_tclk());
}

/*****************************************************************************
 * SPI
 ****************************************************************************/
void __init dove_spi0_init(void)
{
	orion_spi_init(DOVE_SPI0_PHYS_BASE, get_tclk());
}

void __init dove_spi1_init(void)
{
	orion_spi_1_init(DOVE_SPI1_PHYS_BASE, get_tclk());
}

/*****************************************************************************
 * I2C
 ****************************************************************************/
void __init dove_i2c_init(void)
{
	orion_i2c_init(DOVE_I2C_PHYS_BASE, IRQ_DOVE_I2C, 10);
}

/*****************************************************************************
 * Time handling
 ****************************************************************************/
void __init dove_init_early(void)
{
	orion_time_set_base(TIMER_VIRT_BASE);
}

static int get_tclk(void)
{
	/* use DOVE_RESET_SAMPLE_HI/LO to detect tclk */
	return 166666667;
}

static void dove_timer_init(void)
{
	orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
			IRQ_DOVE_BRIDGE, get_tclk());
}

struct sys_timer dove_timer = {
	.init = dove_timer_init,
};

/*****************************************************************************
 * XOR 0
 ****************************************************************************/
void __init dove_xor0_init(void)
{
	orion_xor0_init(DOVE_XOR0_PHYS_BASE, DOVE_XOR0_HIGH_PHYS_BASE,
			IRQ_DOVE_XOR_00, IRQ_DOVE_XOR_01);
}

/*****************************************************************************
 * XOR 1
 ****************************************************************************/
void __init dove_xor1_init(void)
{
	orion_xor1_init(DOVE_XOR1_PHYS_BASE, DOVE_XOR1_HIGH_PHYS_BASE,
			IRQ_DOVE_XOR_10, IRQ_DOVE_XOR_11);
}

/*****************************************************************************
 * SDIO
 ****************************************************************************/
static u64 sdio_dmamask = DMA_BIT_MASK(32);

static struct resource dove_sdio0_resources[] = {
	{
		.start	= DOVE_SDIO0_PHYS_BASE,
		.end	= DOVE_SDIO0_PHYS_BASE + 0xff,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_DOVE_SDIO0,
		.end	= IRQ_DOVE_SDIO0,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device dove_sdio0 = {
	.name		= "sdhci-dove",
	.id		= 0,
	.dev		= {
		.dma_mask		= &sdio_dmamask,
		.coherent_dma_mask	= DMA_BIT_MASK(32),
	},
	.resource	= dove_sdio0_resources,
	.num_resources	= ARRAY_SIZE(dove_sdio0_resources),
};

void __init dove_sdio0_init(void)
{
	platform_device_register(&dove_sdio0);
}

static struct resource dove_sdio1_resources[] = {
	{
		.start	= DOVE_SDIO1_PHYS_BASE,
		.end	= DOVE_SDIO1_PHYS_BASE + 0xff,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_DOVE_SDIO1,
		.end	= IRQ_DOVE_SDIO1,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device dove_sdio1 = {
	.name		= "sdhci-dove",
	.id		= 1,
	.dev		= {
		.dma_mask		= &sdio_dmamask,
		.coherent_dma_mask	= DMA_BIT_MASK(32),
	},
	.resource	= dove_sdio1_resources,
	.num_resources	= ARRAY_SIZE(dove_sdio1_resources),
};

void __init dove_sdio1_init(void)
{
	platform_device_register(&dove_sdio1);
}

void __init dove_init(void)
{
	printk(KERN_INFO "Dove 88AP510 SoC, ");
	printk(KERN_INFO "TCLK = %dMHz\n", (get_tclk() + 499999) / 1000000);

#ifdef CONFIG_CACHE_TAUROS2
	tauros2_init();
#endif
	dove_setup_cpu_mbus();

	/* Setup root of clk tree */
	clk_init();

	/* internal devices that every board has */
	dove_rtc_init();
	dove_xor0_init();
	dove_xor1_init();
}

void dove_restart(char mode, const char *cmd)
{
	/*
	 * Enable soft reset to assert RSTOUTn.
	 */
	writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK);

	/*
	 * Assert soft reset.
	 */
	writel(SOFT_RESET, SYSTEM_SOFT_RESET);

	while (1)
		;
}