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kernel-ark/arch/arm/mach-mv78xx0/common.c
Linus Torvalds 7cc4e87f91 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (236 commits)
  [ARM] 5300/1: fixup spitz reset during boot
  [ARM] 5295/1: make ZONE_DMA optional
  [ARM] 5239/1: Palm Zire 72 power management support
  [ARM] 5298/1: Drop desc_handle_irq()
  [ARM] 5297/1: [KS8695] Fix two compile-time warnings
  [ARM] 5296/1: [KS8695] Replace macro's with trailing underscores.
  [ARM] pxa: allow multi-machine PCMCIA builds
  [ARM] pxa: add preliminary CPUFREQ support for PXA3xx
  [ARM] pxa: add missing ACCR bit definitions to pxa3xx-regs.h
  [ARM] pxa: rename cpu-pxa.c to cpufreq-pxa2xx.c
  [ARM] pxa/zylonite: add support for USB OHCI
  [ARM] ohci-pxa27x: use ioremap() and offset for register access
  [ARM] ohci-pxa27x: introduce pxa27x_clear_otgph()
  [ARM] ohci-pxa27x: use platform_get_{irq,resource} for the resource
  [ARM] ohci-pxa27x: move OHCI controller specific registers into the driver
  [ARM] ohci-pxa27x: introduce flags to avoid direct access to OHCI registers
  [ARM] pxa: move I2S register and bit definitions into pxa2xx-i2s.c
  [ARM] pxa: simplify DMA register definitions
  [ARM] pxa: make additional DCSR bits valid for PXA3xx
  [ARM] pxa: move i2c register and bit definitions into i2c-pxa.c
  ...

Fixed up conflicts in
	arch/arm/mach-versatile/core.c
	sound/soc/pxa/pxa2xx-ac97.c
	sound/soc/pxa/pxa2xx-i2s.c
manually.
2008-10-11 10:09:45 -07:00

760 lines
18 KiB
C
Raw Blame History

/*
* arch/arm/mach-mv78xx0/common.c
*
* Core functions for Marvell MV78xx0 SoCs
*
* 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/serial_8250.h>
#include <linux/mbus.h>
#include <linux/mv643xx_eth.h>
#include <linux/ata_platform.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <mach/mv78xx0.h>
#include <plat/cache-feroceon-l2.h>
#include <plat/ehci-orion.h>
#include <plat/orion_nand.h>
#include <plat/time.h>
#include "common.h"
/*****************************************************************************
* Common bits
****************************************************************************/
int mv78xx0_core_index(void)
{
u32 extra;
/*
* Read Extra Features register.
*/
__asm__("mrc p15, 1, %0, c15, c1, 0" : "=r" (extra));
return !!(extra & 0x00004000);
}
static int get_hclk(void)
{
int hclk;
/*
* HCLK tick rate is configured by DEV_D[7:5] pins.
*/
switch ((readl(SAMPLE_AT_RESET_LOW) >> 5) & 7) {
case 0:
hclk = 166666667;
break;
case 1:
hclk = 200000000;
break;
case 2:
hclk = 266666667;
break;
case 3:
hclk = 333333333;
break;
case 4:
hclk = 400000000;
break;
default:
panic("unknown HCLK PLL setting: %.8x\n",
readl(SAMPLE_AT_RESET_LOW));
}
return hclk;
}
static void get_pclk_l2clk(int hclk, int core_index, int *pclk, int *l2clk)
{
u32 cfg;
/*
* Core #0 PCLK/L2CLK is configured by bits [13:8], core #1
* PCLK/L2CLK by bits [19:14].
*/
if (core_index == 0) {
cfg = (readl(SAMPLE_AT_RESET_LOW) >> 8) & 0x3f;
} else {
cfg = (readl(SAMPLE_AT_RESET_LOW) >> 14) & 0x3f;
}
/*
* Bits [11:8] ([17:14] for core #1) configure the PCLK:HCLK
* ratio (1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6).
*/
*pclk = ((u64)hclk * (2 + (cfg & 0xf))) >> 1;
/*
* Bits [13:12] ([19:18] for core #1) configure the PCLK:L2CLK
* ratio (1, 2, 3).
*/
*l2clk = *pclk / (((cfg >> 4) & 3) + 1);
}
static int get_tclk(void)
{
int tclk;
/*
* TCLK tick rate is configured by DEV_A[2:0] strap pins.
*/
switch ((readl(SAMPLE_AT_RESET_HIGH) >> 6) & 7) {
case 1:
tclk = 166666667;
break;
case 3:
tclk = 200000000;
break;
default:
panic("unknown TCLK PLL setting: %.8x\n",
readl(SAMPLE_AT_RESET_HIGH));
}
return tclk;
}
/*****************************************************************************
* I/O Address Mapping
****************************************************************************/
static struct map_desc mv78xx0_io_desc[] __initdata = {
{
.virtual = MV78XX0_CORE_REGS_VIRT_BASE,
.pfn = 0,
.length = MV78XX0_CORE_REGS_SIZE,
.type = MT_DEVICE,
}, {
.virtual = MV78XX0_PCIE_IO_VIRT_BASE(0),
.pfn = __phys_to_pfn(MV78XX0_PCIE_IO_PHYS_BASE(0)),
.length = MV78XX0_PCIE_IO_SIZE * 8,
.type = MT_DEVICE,
}, {
.virtual = MV78XX0_REGS_VIRT_BASE,
.pfn = __phys_to_pfn(MV78XX0_REGS_PHYS_BASE),
.length = MV78XX0_REGS_SIZE,
.type = MT_DEVICE,
},
};
void __init mv78xx0_map_io(void)
{
unsigned long phys;
/*
* Map the right set of per-core registers depending on
* which core we are running on.
*/
if (mv78xx0_core_index() == 0) {
phys = MV78XX0_CORE0_REGS_PHYS_BASE;
} else {
phys = MV78XX0_CORE1_REGS_PHYS_BASE;
}
mv78xx0_io_desc[0].pfn = __phys_to_pfn(phys);
iotable_init(mv78xx0_io_desc, ARRAY_SIZE(mv78xx0_io_desc));
}
/*****************************************************************************
* EHCI
****************************************************************************/
static struct orion_ehci_data mv78xx0_ehci_data = {
.dram = &mv78xx0_mbus_dram_info,
};
static u64 ehci_dmamask = 0xffffffffUL;
/*****************************************************************************
* EHCI0
****************************************************************************/
static struct resource mv78xx0_ehci0_resources[] = {
{
.start = USB0_PHYS_BASE,
.end = USB0_PHYS_BASE + 0x0fff,
.flags = IORESOURCE_MEM,
}, {
.start = IRQ_MV78XX0_USB_0,
.end = IRQ_MV78XX0_USB_0,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_ehci0 = {
.name = "orion-ehci",
.id = 0,
.dev = {
.dma_mask = &ehci_dmamask,
.coherent_dma_mask = 0xffffffff,
.platform_data = &mv78xx0_ehci_data,
},
.resource = mv78xx0_ehci0_resources,
.num_resources = ARRAY_SIZE(mv78xx0_ehci0_resources),
};
void __init mv78xx0_ehci0_init(void)
{
platform_device_register(&mv78xx0_ehci0);
}
/*****************************************************************************
* EHCI1
****************************************************************************/
static struct resource mv78xx0_ehci1_resources[] = {
{
.start = USB1_PHYS_BASE,
.end = USB1_PHYS_BASE + 0x0fff,
.flags = IORESOURCE_MEM,
}, {
.start = IRQ_MV78XX0_USB_1,
.end = IRQ_MV78XX0_USB_1,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_ehci1 = {
.name = "orion-ehci",
.id = 1,
.dev = {
.dma_mask = &ehci_dmamask,
.coherent_dma_mask = 0xffffffff,
.platform_data = &mv78xx0_ehci_data,
},
.resource = mv78xx0_ehci1_resources,
.num_resources = ARRAY_SIZE(mv78xx0_ehci1_resources),
};
void __init mv78xx0_ehci1_init(void)
{
platform_device_register(&mv78xx0_ehci1);
}
/*****************************************************************************
* EHCI2
****************************************************************************/
static struct resource mv78xx0_ehci2_resources[] = {
{
.start = USB2_PHYS_BASE,
.end = USB2_PHYS_BASE + 0x0fff,
.flags = IORESOURCE_MEM,
}, {
.start = IRQ_MV78XX0_USB_2,
.end = IRQ_MV78XX0_USB_2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_ehci2 = {
.name = "orion-ehci",
.id = 2,
.dev = {
.dma_mask = &ehci_dmamask,
.coherent_dma_mask = 0xffffffff,
.platform_data = &mv78xx0_ehci_data,
},
.resource = mv78xx0_ehci2_resources,
.num_resources = ARRAY_SIZE(mv78xx0_ehci2_resources),
};
void __init mv78xx0_ehci2_init(void)
{
platform_device_register(&mv78xx0_ehci2);
}
/*****************************************************************************
* GE00
****************************************************************************/
struct mv643xx_eth_shared_platform_data mv78xx0_ge00_shared_data = {
.t_clk = 0,
.dram = &mv78xx0_mbus_dram_info,
};
static struct resource mv78xx0_ge00_shared_resources[] = {
{
.name = "ge00 base",
.start = GE00_PHYS_BASE + 0x2000,
.end = GE00_PHYS_BASE + 0x3fff,
.flags = IORESOURCE_MEM,
}, {
.name = "ge err irq",
.start = IRQ_MV78XX0_GE_ERR,
.end = IRQ_MV78XX0_GE_ERR,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_ge00_shared = {
.name = MV643XX_ETH_SHARED_NAME,
.id = 0,
.dev = {
.platform_data = &mv78xx0_ge00_shared_data,
},
.num_resources = ARRAY_SIZE(mv78xx0_ge00_shared_resources),
.resource = mv78xx0_ge00_shared_resources,
};
static struct resource mv78xx0_ge00_resources[] = {
{
.name = "ge00 irq",
.start = IRQ_MV78XX0_GE00_SUM,
.end = IRQ_MV78XX0_GE00_SUM,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_ge00 = {
.name = MV643XX_ETH_NAME,
.id = 0,
.num_resources = 1,
.resource = mv78xx0_ge00_resources,
};
void __init mv78xx0_ge00_init(struct mv643xx_eth_platform_data *eth_data)
{
eth_data->shared = &mv78xx0_ge00_shared;
mv78xx0_ge00.dev.platform_data = eth_data;
platform_device_register(&mv78xx0_ge00_shared);
platform_device_register(&mv78xx0_ge00);
}
/*****************************************************************************
* GE01
****************************************************************************/
struct mv643xx_eth_shared_platform_data mv78xx0_ge01_shared_data = {
.t_clk = 0,
.dram = &mv78xx0_mbus_dram_info,
.shared_smi = &mv78xx0_ge00_shared,
};
static struct resource mv78xx0_ge01_shared_resources[] = {
{
.name = "ge01 base",
.start = GE01_PHYS_BASE + 0x2000,
.end = GE01_PHYS_BASE + 0x3fff,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device mv78xx0_ge01_shared = {
.name = MV643XX_ETH_SHARED_NAME,
.id = 1,
.dev = {
.platform_data = &mv78xx0_ge01_shared_data,
},
.num_resources = 1,
.resource = mv78xx0_ge01_shared_resources,
};
static struct resource mv78xx0_ge01_resources[] = {
{
.name = "ge01 irq",
.start = IRQ_MV78XX0_GE01_SUM,
.end = IRQ_MV78XX0_GE01_SUM,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_ge01 = {
.name = MV643XX_ETH_NAME,
.id = 1,
.num_resources = 1,
.resource = mv78xx0_ge01_resources,
};
void __init mv78xx0_ge01_init(struct mv643xx_eth_platform_data *eth_data)
{
eth_data->shared = &mv78xx0_ge01_shared;
mv78xx0_ge01.dev.platform_data = eth_data;
platform_device_register(&mv78xx0_ge01_shared);
platform_device_register(&mv78xx0_ge01);
}
/*****************************************************************************
* GE10
****************************************************************************/
struct mv643xx_eth_shared_platform_data mv78xx0_ge10_shared_data = {
.t_clk = 0,
.dram = &mv78xx0_mbus_dram_info,
.shared_smi = &mv78xx0_ge00_shared,
};
static struct resource mv78xx0_ge10_shared_resources[] = {
{
.name = "ge10 base",
.start = GE10_PHYS_BASE + 0x2000,
.end = GE10_PHYS_BASE + 0x3fff,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device mv78xx0_ge10_shared = {
.name = MV643XX_ETH_SHARED_NAME,
.id = 2,
.dev = {
.platform_data = &mv78xx0_ge10_shared_data,
},
.num_resources = 1,
.resource = mv78xx0_ge10_shared_resources,
};
static struct resource mv78xx0_ge10_resources[] = {
{
.name = "ge10 irq",
.start = IRQ_MV78XX0_GE10_SUM,
.end = IRQ_MV78XX0_GE10_SUM,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_ge10 = {
.name = MV643XX_ETH_NAME,
.id = 2,
.num_resources = 1,
.resource = mv78xx0_ge10_resources,
};
void __init mv78xx0_ge10_init(struct mv643xx_eth_platform_data *eth_data)
{
eth_data->shared = &mv78xx0_ge10_shared;
mv78xx0_ge10.dev.platform_data = eth_data;
platform_device_register(&mv78xx0_ge10_shared);
platform_device_register(&mv78xx0_ge10);
}
/*****************************************************************************
* GE11
****************************************************************************/
struct mv643xx_eth_shared_platform_data mv78xx0_ge11_shared_data = {
.t_clk = 0,
.dram = &mv78xx0_mbus_dram_info,
.shared_smi = &mv78xx0_ge00_shared,
};
static struct resource mv78xx0_ge11_shared_resources[] = {
{
.name = "ge11 base",
.start = GE11_PHYS_BASE + 0x2000,
.end = GE11_PHYS_BASE + 0x3fff,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device mv78xx0_ge11_shared = {
.name = MV643XX_ETH_SHARED_NAME,
.id = 3,
.dev = {
.platform_data = &mv78xx0_ge11_shared_data,
},
.num_resources = 1,
.resource = mv78xx0_ge11_shared_resources,
};
static struct resource mv78xx0_ge11_resources[] = {
{
.name = "ge11 irq",
.start = IRQ_MV78XX0_GE11_SUM,
.end = IRQ_MV78XX0_GE11_SUM,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_ge11 = {
.name = MV643XX_ETH_NAME,
.id = 3,
.num_resources = 1,
.resource = mv78xx0_ge11_resources,
};
void __init mv78xx0_ge11_init(struct mv643xx_eth_platform_data *eth_data)
{
eth_data->shared = &mv78xx0_ge11_shared;
mv78xx0_ge11.dev.platform_data = eth_data;
platform_device_register(&mv78xx0_ge11_shared);
platform_device_register(&mv78xx0_ge11);
}
/*****************************************************************************
* SATA
****************************************************************************/
static struct resource mv78xx0_sata_resources[] = {
{
.name = "sata base",
.start = SATA_PHYS_BASE,
.end = SATA_PHYS_BASE + 0x5000 - 1,
.flags = IORESOURCE_MEM,
}, {
.name = "sata irq",
.start = IRQ_MV78XX0_SATA,
.end = IRQ_MV78XX0_SATA,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_sata = {
.name = "sata_mv",
.id = 0,
.dev = {
.coherent_dma_mask = 0xffffffff,
},
.num_resources = ARRAY_SIZE(mv78xx0_sata_resources),
.resource = mv78xx0_sata_resources,
};
void __init mv78xx0_sata_init(struct mv_sata_platform_data *sata_data)
{
sata_data->dram = &mv78xx0_mbus_dram_info;
mv78xx0_sata.dev.platform_data = sata_data;
platform_device_register(&mv78xx0_sata);
}
/*****************************************************************************
* UART0
****************************************************************************/
static struct plat_serial8250_port mv78xx0_uart0_data[] = {
{
.mapbase = UART0_PHYS_BASE,
.membase = (char *)UART0_VIRT_BASE,
.irq = IRQ_MV78XX0_UART_0,
.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = 0,
}, {
},
};
static struct resource mv78xx0_uart0_resources[] = {
{
.start = UART0_PHYS_BASE,
.end = UART0_PHYS_BASE + 0xff,
.flags = IORESOURCE_MEM,
}, {
.start = IRQ_MV78XX0_UART_0,
.end = IRQ_MV78XX0_UART_0,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_uart0 = {
.name = "serial8250",
.id = 0,
.dev = {
.platform_data = mv78xx0_uart0_data,
},
.resource = mv78xx0_uart0_resources,
.num_resources = ARRAY_SIZE(mv78xx0_uart0_resources),
};
void __init mv78xx0_uart0_init(void)
{
platform_device_register(&mv78xx0_uart0);
}
/*****************************************************************************
* UART1
****************************************************************************/
static struct plat_serial8250_port mv78xx0_uart1_data[] = {
{
.mapbase = UART1_PHYS_BASE,
.membase = (char *)UART1_VIRT_BASE,
.irq = IRQ_MV78XX0_UART_1,
.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = 0,
}, {
},
};
static struct resource mv78xx0_uart1_resources[] = {
{
.start = UART1_PHYS_BASE,
.end = UART1_PHYS_BASE + 0xff,
.flags = IORESOURCE_MEM,
}, {
.start = IRQ_MV78XX0_UART_1,
.end = IRQ_MV78XX0_UART_1,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_uart1 = {
.name = "serial8250",
.id = 1,
.dev = {
.platform_data = mv78xx0_uart1_data,
},
.resource = mv78xx0_uart1_resources,
.num_resources = ARRAY_SIZE(mv78xx0_uart1_resources),
};
void __init mv78xx0_uart1_init(void)
{
platform_device_register(&mv78xx0_uart1);
}
/*****************************************************************************
* UART2
****************************************************************************/
static struct plat_serial8250_port mv78xx0_uart2_data[] = {
{
.mapbase = UART2_PHYS_BASE,
.membase = (char *)UART2_VIRT_BASE,
.irq = IRQ_MV78XX0_UART_2,
.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = 0,
}, {
},
};
static struct resource mv78xx0_uart2_resources[] = {
{
.start = UART2_PHYS_BASE,
.end = UART2_PHYS_BASE + 0xff,
.flags = IORESOURCE_MEM,
}, {
.start = IRQ_MV78XX0_UART_2,
.end = IRQ_MV78XX0_UART_2,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_uart2 = {
.name = "serial8250",
.id = 2,
.dev = {
.platform_data = mv78xx0_uart2_data,
},
.resource = mv78xx0_uart2_resources,
.num_resources = ARRAY_SIZE(mv78xx0_uart2_resources),
};
void __init mv78xx0_uart2_init(void)
{
platform_device_register(&mv78xx0_uart2);
}
/*****************************************************************************
* UART3
****************************************************************************/
static struct plat_serial8250_port mv78xx0_uart3_data[] = {
{
.mapbase = UART3_PHYS_BASE,
.membase = (char *)UART3_VIRT_BASE,
.irq = IRQ_MV78XX0_UART_3,
.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = 0,
}, {
},
};
static struct resource mv78xx0_uart3_resources[] = {
{
.start = UART3_PHYS_BASE,
.end = UART3_PHYS_BASE + 0xff,
.flags = IORESOURCE_MEM,
}, {
.start = IRQ_MV78XX0_UART_3,
.end = IRQ_MV78XX0_UART_3,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_uart3 = {
.name = "serial8250",
.id = 3,
.dev = {
.platform_data = mv78xx0_uart3_data,
},
.resource = mv78xx0_uart3_resources,
.num_resources = ARRAY_SIZE(mv78xx0_uart3_resources),
};
void __init mv78xx0_uart3_init(void)
{
platform_device_register(&mv78xx0_uart3);
}
/*****************************************************************************
* Time handling
****************************************************************************/
static void mv78xx0_timer_init(void)
{
orion_time_init(IRQ_MV78XX0_TIMER_1, get_tclk());
}
struct sys_timer mv78xx0_timer = {
.init = mv78xx0_timer_init,
};
/*****************************************************************************
* General
****************************************************************************/
static int __init is_l2_writethrough(void)
{
return !!(readl(CPU_CONTROL) & L2_WRITETHROUGH);
}
void __init mv78xx0_init(void)
{
int core_index;
int hclk;
int pclk;
int l2clk;
int tclk;
core_index = mv78xx0_core_index();
hclk = get_hclk();
get_pclk_l2clk(hclk, core_index, &pclk, &l2clk);
tclk = get_tclk();
printk(KERN_INFO "MV78xx0 core #%d, ", core_index);
printk("PCLK = %dMHz, ", (pclk + 499999) / 1000000);
printk("L2 = %dMHz, ", (l2clk + 499999) / 1000000);
printk("HCLK = %dMHz, ", (hclk + 499999) / 1000000);
printk("TCLK = %dMHz\n", (tclk + 499999) / 1000000);
mv78xx0_setup_cpu_mbus();
#ifdef CONFIG_CACHE_FEROCEON_L2
feroceon_l2_init(is_l2_writethrough());
#endif
mv78xx0_ge00_shared_data.t_clk = tclk;
mv78xx0_ge01_shared_data.t_clk = tclk;
mv78xx0_ge10_shared_data.t_clk = tclk;
mv78xx0_ge11_shared_data.t_clk = tclk;
mv78xx0_uart0_data[0].uartclk = tclk;
mv78xx0_uart1_data[0].uartclk = tclk;
mv78xx0_uart2_data[0].uartclk = tclk;
mv78xx0_uart3_data[0].uartclk = tclk;
}
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