Commit cd1dc431 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Linus Walleij
Browse files

ARM: ux500: consolidate soc_device code in id.c 



Nothing else uses the global dbx500_asic_id structure, so
we can merge the two small files that reference it into one.

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 4cf124f9

arch/arm/mach-ux500/cache-l2x0.c

+0 −1
Original line number Diff line number Diff line
@@ -12,7 +12,6 @@ 
#include <asm/hardware/cache-l2x0.h>



#include "db8500-regs.h"

#include "id.h"



static int __init ux500_l2x0_unlock(void)

{

arch/arm/mach-ux500/cpu-db8500.c

+1 −27
Original line number Diff line number Diff line
@@ -20,7 +20,6 @@ 
#include <linux/of_platform.h>

#include <linux/perf/arm_pmu.h>

#include <linux/regulator/machine.h>

#include <linux/random.h>



#include <asm/mach/map.h>
@@ -60,31 +59,6 @@ static struct arm_pmu_platdata db8500_pmu_platdata = { 
	.handle_irq		= db8500_pmu_handler,

};



static const char *db8500_read_soc_id(void)

{

	void __iomem *uid;

	const char *retstr;



	uid = ioremap(U8500_BB_UID_BASE, 0x20);

	if (!uid)

		return NULL;

	/* Throw these device-specific numbers into the entropy pool */

	add_device_randomness(uid, 0x14);

	retstr = kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x",

			 readl((u32 *)uid+0),

			 readl((u32 *)uid+1), readl((u32 *)uid+2),

			 readl((u32 *)uid+3), readl((u32 *)uid+4));

	iounmap(uid);

	return retstr;

}



static struct device * __init db8500_soc_device_init(void)

{

	const char *soc_id = db8500_read_soc_id();



	return ux500_soc_device_init(soc_id);

}



static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {

	/* Requires call-back bindings. */

	OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata),
@@ -121,7 +95,7 @@ static const struct of_device_id u8500_local_bus_nodes[] = { 


static void __init u8500_init_machine(void)

{

	struct device *parent = db8500_soc_device_init();

	struct device *parent = ux500_soc_device_init();



	/* automatically probe child nodes of dbx5x0 devices */

	if (of_machine_is_compatible("st-ericsson,u8540"))

arch/arm/mach-ux500/cpu.c

+0 −70
Original line number Diff line number Diff line
@@ -27,7 +27,6 @@ 


#include "board-mop500.h"

#include "db8500-regs.h"

#include "id.h"



void ux500_restart(enum reboot_mode mode, const char *cmd)

{
@@ -66,72 +65,3 @@ void __init ux500_init_irq(void) 
	ux500_pm_init(r.start, r.end-r.start);

	ux500_l2x0_init();

}
 


static const char * __init ux500_get_machine(void)

{

	return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());

}



static const char * __init ux500_get_family(void)

{

	return kasprintf(GFP_KERNEL, "ux500");

}



static const char * __init ux500_get_revision(void)

{

	unsigned int rev = dbx500_revision();



	if (rev == 0x01)

		return kasprintf(GFP_KERNEL, "%s", "ED");

	else if (rev >= 0xA0)

		return kasprintf(GFP_KERNEL, "%d.%d",

				 (rev >> 4) - 0xA + 1, rev & 0xf);



	return kasprintf(GFP_KERNEL, "%s", "Unknown");

}



static ssize_t ux500_get_process(struct device *dev,

					struct device_attribute *attr,

					char *buf)

{

	if (dbx500_id.process == 0x00)

		return sprintf(buf, "Standard\n");



	return sprintf(buf, "%02xnm\n", dbx500_id.process);

}



static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,

				     const char *soc_id)

{

	soc_dev_attr->soc_id   = soc_id;

	soc_dev_attr->machine  = ux500_get_machine();

	soc_dev_attr->family   = ux500_get_family();

	soc_dev_attr->revision = ux500_get_revision();

}



static const struct device_attribute ux500_soc_attr =

	__ATTR(process,  S_IRUGO, ux500_get_process,  NULL);



struct device * __init ux500_soc_device_init(const char *soc_id)

{

	struct device *parent;

	struct soc_device *soc_dev;

	struct soc_device_attribute *soc_dev_attr;



	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);

	if (!soc_dev_attr)

		return ERR_PTR(-ENOMEM);



	soc_info_populate(soc_dev_attr, soc_id);



	soc_dev = soc_device_register(soc_dev_attr);

	if (IS_ERR(soc_dev)) {

	        kfree(soc_dev_attr);

		return NULL;

	}



	parent = soc_device_to_device(soc_dev);

	device_create_file(parent, &ux500_soc_attr);



	return parent;

}

arch/arm/mach-ux500/id.c

+105 −5
Original line number Diff line number Diff line
@@ -8,6 +8,9 @@ 
#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/io.h>

#include <linux/random.h>

#include <linux/slab.h>

#include <linux/sys_soc.h>



#include <asm/cputype.h>

#include <asm/tlbflush.h>
@@ -17,9 +20,20 @@ 
#include "setup.h"



#include "db8500-regs.h"

#include "id.h"



struct dbx500_asic_id dbx500_id;

/**

 * struct dbx500_asic_id - fields of the ASIC ID

 * @process: the manufacturing process, 0x40 is 40 nm 0x00 is "standard"

 * @partnumber: hithereto 0x8500 for DB8500

 * @revision: version code in the series

 */

struct dbx500_asic_id {

	u16	partnumber;

	u8	revision;

	u8	process;

};



static struct dbx500_asic_id dbx500_id;



static unsigned int __init ux500_read_asicid(phys_addr_t addr)

{
@@ -42,9 +56,9 @@ static unsigned int __init ux500_read_asicid(phys_addr_t addr) 


static void ux500_print_soc_info(unsigned int asicid)

{

	unsigned int rev = dbx500_revision();

	unsigned int rev = dbx500_id.revision;



	pr_info("DB%4x ", dbx500_partnumber());

	pr_info("DB%4x ", dbx500_id.partnumber);



	if (rev == 0x01)

		pr_cont("Early Drop");
@@ -105,7 +119,7 @@ void __init ux500_setup_id(void) 


	if (!asicid) {

		pr_err("Unable to identify SoC\n");

		ux500_unknown_soc();

		BUG();

	}



	dbx500_id.process = asicid >> 24;
@@ -114,3 +128,89 @@ void __init ux500_setup_id(void) 


	ux500_print_soc_info(asicid);

}



static const char * __init ux500_get_machine(void)

{

	return kasprintf(GFP_KERNEL, "DB%4x", dbx500_id.partnumber);

}



static const char * __init ux500_get_family(void)

{

	return kasprintf(GFP_KERNEL, "ux500");

}



static const char * __init ux500_get_revision(void)

{

	unsigned int rev = dbx500_id.revision;



	if (rev == 0x01)

		return kasprintf(GFP_KERNEL, "%s", "ED");

	else if (rev >= 0xA0)

		return kasprintf(GFP_KERNEL, "%d.%d",

				 (rev >> 4) - 0xA + 1, rev & 0xf);



	return kasprintf(GFP_KERNEL, "%s", "Unknown");

}



static ssize_t ux500_get_process(struct device *dev,

					struct device_attribute *attr,

					char *buf)

{

	if (dbx500_id.process == 0x00)

		return sprintf(buf, "Standard\n");



	return sprintf(buf, "%02xnm\n", dbx500_id.process);

}



static const char *db8500_read_soc_id(void)

{

	void __iomem *uid;

	const char *retstr;



	uid = ioremap(U8500_BB_UID_BASE, 0x20);

	if (!uid)

		return NULL;

	/* Throw these device-specific numbers into the entropy pool */

	add_device_randomness(uid, 0x14);

	retstr = kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x",

			 readl((u32 *)uid+0),

			 readl((u32 *)uid+1), readl((u32 *)uid+2),

			 readl((u32 *)uid+3), readl((u32 *)uid+4));

	iounmap(uid);

	return retstr;

}



static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr)

{

	soc_dev_attr->soc_id   = db8500_read_soc_id();

	soc_dev_attr->machine  = ux500_get_machine();

	soc_dev_attr->family   = ux500_get_family();

	soc_dev_attr->revision = ux500_get_revision();

}



static const struct device_attribute ux500_soc_attr =

	__ATTR(process,  S_IRUGO, ux500_get_process,  NULL);



struct device * __init ux500_soc_device_init(void)

{

	struct device *parent;

	struct soc_device *soc_dev;

	struct soc_device_attribute *soc_dev_attr;



	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);

	if (!soc_dev_attr)

		return ERR_PTR(-ENOMEM);



	soc_info_populate(soc_dev_attr);



	soc_dev = soc_device_register(soc_dev_attr);

	if (IS_ERR(soc_dev)) {

	        kfree(soc_dev_attr);

		return NULL;

	}



	parent = soc_device_to_device(soc_dev);

	device_create_file(parent, &ux500_soc_attr);



	return parent;

}

arch/arm/mach-ux500/id.h

deleted100644 → 0
+0 −37
Original line number Diff line number Diff line 
/*

 * Copyright (C) ST-Ericsson SA 2010

 *

 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson

 * License terms: GNU General Public License (GPL) version 2

 */



#ifndef __MACH_UX500_ID

#define __MACH_UX500_ID



/**

 * struct dbx500_asic_id - fields of the ASIC ID

 * @process: the manufacturing process, 0x40 is 40 nm 0x00 is "standard"

 * @partnumber: hithereto 0x8500 for DB8500

 * @revision: version code in the series

 */

struct dbx500_asic_id {

	u16	partnumber;

	u8	revision;

	u8	process;

};



extern struct dbx500_asic_id dbx500_id;



static inline unsigned int __attribute_const__ dbx500_partnumber(void)

{

	return dbx500_id.partnumber;

}



static inline unsigned int __attribute_const__ dbx500_revision(void)

{

	return dbx500_id.revision;

}



#define ux500_unknown_soc()	BUG()



#endif

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