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Commit eaeed5d3 authored by Steve Glendinning's avatar Steve Glendinning Committed by Paul Mundt
Browse files

sh: add support for SMSC Polaris platform 



Polaris is an SMSC reference platform with a SH7709S CPU and LAN9118
ethernet controller.  This patch adds support for it.

Updated following feedback from Nobuhiro Iwamatsu.

Signed-off-by: default avatarSteve Glendinning <steve.glendinning@smsc.com>
Reviewed-by: default avatarNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 3bf50923

arch/sh/boards/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -261,6 +261,13 @@ config SH_CAYMAN 
	depends on CPU_SUBTYPE_SH5_101 || CPU_SUBTYPE_SH5_103

	select SYS_SUPPORTS_PCI



config SH_POLARIS

	bool "SMSC Polaris"

	select CPU_HAS_IPR_IRQ

	depends on CPU_SUBTYPE_SH7709

	help

	  Select if configuring for an SMSC Polaris development board



endmenu



source "arch/sh/boards/mach-r2d/Kconfig"

arch/sh/boards/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -8,3 +8,4 @@ obj-$(CONFIG_SH_URQUELL) += board-urquell.o 
obj-$(CONFIG_SH_SHMIN)		+= board-shmin.o

obj-$(CONFIG_SH_EDOSK7760)	+= board-edosk7760.o

obj-$(CONFIG_SH_ESPT)		+= board-espt.o

obj-$(CONFIG_SH_POLARIS)	+= board-polaris.o

arch/sh/boards/board-polaris.c

0 → 100644
+149 −0
Original line number Diff line number Diff line 
/*

 * June 2006 steve.glendinning@smsc.com

 *

 * Polaris-specific resource declaration

 *

 */



#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/platform_device.h>

#include <linux/smsc911x.h>

#include <linux/io.h>

#include <asm/irq.h>

#include <asm/machvec.h>

#include <asm/heartbeat.h>

#include <cpu/gpio.h>

#include <mach-se/mach/se.h>



#define BCR2		(0xFFFFFF62)

#define WCR2		(0xFFFFFF66)

#define AREA5_WAIT_CTRL	(0x1C00)

#define WAIT_STATES_10	(0x7)



static struct resource smsc911x_resources[] = {

	[0] = {

		.name		= "smsc911x-memory",

		.start		= PA_EXT5,

		.end		= PA_EXT5 + 0x1fff,

		.flags		= IORESOURCE_MEM,

	},

	[1] = {

		.name		= "smsc911x-irq",

		.start		= IRQ0_IRQ,

		.end		= IRQ0_IRQ,

		.flags		= IORESOURCE_IRQ,

	},

};



static struct smsc911x_platform_config smsc911x_config = {

	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,

	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,

	.flags		= SMSC911X_USE_32BIT,

	.phy_interface	= PHY_INTERFACE_MODE_MII,

};



static struct platform_device smsc911x_device = {

	.name		= "smsc911x",

	.id		= 0,

	.num_resources	= ARRAY_SIZE(smsc911x_resources),

	.resource	= smsc911x_resources,

	.dev = {

		.platform_data = &smsc911x_config,

	},

};



static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };



static struct heartbeat_data heartbeat_data = {

	.bit_pos	= heartbeat_bit_pos,

	.nr_bits	= ARRAY_SIZE(heartbeat_bit_pos),

	.regsize	= 8,

};



static struct resource heartbeat_resources[] = {

	[0] = {

		.start	= PORT_PCDR,

		.end	= PORT_PCDR,

		.flags	= IORESOURCE_MEM,

	},

};



static struct platform_device heartbeat_device = {

	.name		= "heartbeat",

	.id		= -1,

	.dev	= {

		.platform_data	= &heartbeat_data,

	},

	.num_resources	= ARRAY_SIZE(heartbeat_resources),

	.resource	= heartbeat_resources,

};



static struct platform_device *polaris_devices[] __initdata = {

	&smsc911x_device,

	&heartbeat_device,

};



static int __init polaris_initialise(void)

{

	u16 wcr, bcr_mask;



	printk(KERN_INFO "Configuring Polaris external bus\n");



	/* Configure area 5 with 2 wait states */

	wcr = ctrl_inw(WCR2);

	wcr &= (~AREA5_WAIT_CTRL);

	wcr |= (WAIT_STATES_10 << 10);

	ctrl_outw(wcr, WCR2);



	/* Configure area 5 for 32-bit access */

	bcr_mask = ctrl_inw(BCR2);

	bcr_mask |= 1 << 10;

	ctrl_outw(bcr_mask, BCR2);



	return platform_add_devices(polaris_devices,

				    ARRAY_SIZE(polaris_devices));

}

arch_initcall(polaris_initialise);



static struct ipr_data ipr_irq_table[] = {

	/* External IRQs */

	{ IRQ0_IRQ, 0,  0,  1, },	/* IRQ0 */

	{ IRQ1_IRQ, 0,  4,  1, },	/* IRQ1 */

};



static unsigned long ipr_offsets[] = {

	INTC_IPRC

};



static struct ipr_desc ipr_irq_desc = {

	.ipr_offsets	= ipr_offsets,

	.nr_offsets	= ARRAY_SIZE(ipr_offsets),



	.ipr_data	= ipr_irq_table,

	.nr_irqs	= ARRAY_SIZE(ipr_irq_table),

	.chip = {

		.name	= "sh7709-ext",

	},

};



static void __init init_polaris_irq(void)

{

	/* Disable all interrupts */

	ctrl_outw(0, BCR_ILCRA);

	ctrl_outw(0, BCR_ILCRB);

	ctrl_outw(0, BCR_ILCRC);

	ctrl_outw(0, BCR_ILCRD);

	ctrl_outw(0, BCR_ILCRE);

	ctrl_outw(0, BCR_ILCRF);

	ctrl_outw(0, BCR_ILCRG);



	register_ipr_controller(&ipr_irq_desc);

}



static struct sh_machine_vector mv_polaris __initmv = {

	.mv_name		= "Polaris",

	.mv_nr_irqs		= 61,

	.mv_init_irq		= init_polaris_irq,

};