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ARM: at91: move SoC detection to its own driver 

To simplify machine init and as the soc_device struct is not used as the
parent for on-chip devices anymore, move SoC detection to its own driver.

Change in dmesg:
 - before:
DMA: preallocated 256 KiB pool for atomic coherent allocations
AT91: Detected SoC family: sama5d2
AT91: Detected SoC: sama5d27, revision 0
No ATAGs?
clocksource: tcb_clksrc: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 184217874325 ns
at_xdmac f0010000.dma-controller: 16 channels, mapped at 0xe085b000
SCSI subsystem initialized

 - after:
DMA: preallocated 256 KiB pool for atomic coherent allocations
No ATAGs?
clocksource: tcb_clksrc: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 184217874325 ns
at_xdmac f0010000.dma-controller: 16 channels, mapped at 0xe0859000
AT91: Detected SoC family: sama5d2
AT91: Detected SoC: sama5d27, revision 0
SCSI subsystem initialized

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
zero-colors
Alexandre Belloni 2017-02-16 11:31:06 +01:00
parent 8c9290aee1
commit b32de9dd38
11 changed files with 243 additions and 253 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/mach-at91/Makefile
View File

@ -1,7 +1,6 @@
#
# Makefile for the linux kernel.
#
obj-y := soc.o
# CPU-specific support
obj-$(CONFIG_SOC_AT91RM9200) += at91rm9200.o

15
arch/arm/mach-at91/at91rm9200.c
View File

@ -14,23 +14,10 @@
#include <asm/mach/arch.h>
#include "generic.h"
#include "soc.h"
static const struct at91_soc rm9200_socs[] = {
AT91_SOC(AT91RM9200_CIDR_MATCH, 0, "at91rm9200 BGA", "at91rm9200"),
{ /* sentinel */ },
};
static void __init at91rm9200_dt_device_init(void)
{
struct soc_device *soc;
struct device *soc_dev = NULL;
soc = at91_soc_init(rm9200_socs);
if (soc != NULL)
soc_dev = soc_device_to_device(soc);
of_platform_default_populate(NULL, NULL, soc_dev);
of_platform_default_populate(NULL, NULL, NULL);
at91rm9200_pm_init();
}

46
arch/arm/mach-at91/at91sam9.c
View File

@ -14,54 +14,10 @@
#include <asm/system_misc.h>
#include "generic.h"
#include "soc.h"
static const struct at91_soc at91sam9_socs[] = {
AT91_SOC(AT91SAM9260_CIDR_MATCH, 0, "at91sam9260", NULL),
AT91_SOC(AT91SAM9261_CIDR_MATCH, 0, "at91sam9261", NULL),
AT91_SOC(AT91SAM9263_CIDR_MATCH, 0, "at91sam9263", NULL),
AT91_SOC(AT91SAM9G20_CIDR_MATCH, 0, "at91sam9g20", NULL),
AT91_SOC(AT91SAM9RL64_CIDR_MATCH, 0, "at91sam9rl64", NULL),
AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9M11_EXID_MATCH,
"at91sam9m11", "at91sam9g45"),
AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9M10_EXID_MATCH,
"at91sam9m10", "at91sam9g45"),
AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9G46_EXID_MATCH,
"at91sam9g46", "at91sam9g45"),
AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9G45_EXID_MATCH,
"at91sam9g45", "at91sam9g45"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9G15_EXID_MATCH,
"at91sam9g15", "at91sam9x5"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9G35_EXID_MATCH,
"at91sam9g35", "at91sam9x5"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9X35_EXID_MATCH,
"at91sam9x35", "at91sam9x5"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9G25_EXID_MATCH,
"at91sam9g25", "at91sam9x5"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9X25_EXID_MATCH,
"at91sam9x25", "at91sam9x5"),
AT91_SOC(AT91SAM9N12_CIDR_MATCH, AT91SAM9CN12_EXID_MATCH,
"at91sam9cn12", "at91sam9n12"),
AT91_SOC(AT91SAM9N12_CIDR_MATCH, AT91SAM9N12_EXID_MATCH,
"at91sam9n12", "at91sam9n12"),
AT91_SOC(AT91SAM9N12_CIDR_MATCH, AT91SAM9CN11_EXID_MATCH,
"at91sam9cn11", "at91sam9n12"),
AT91_SOC(AT91SAM9XE128_CIDR_MATCH, 0, "at91sam9xe128", "at91sam9xe128"),
AT91_SOC(AT91SAM9XE256_CIDR_MATCH, 0, "at91sam9xe256", "at91sam9xe256"),
AT91_SOC(AT91SAM9XE512_CIDR_MATCH, 0, "at91sam9xe512", "at91sam9xe512"),
{ /* sentinel */ },
};
static void __init at91sam9_init(void)
{
struct soc_device *soc;
struct device *soc_dev = NULL;
soc = at91_soc_init(at91sam9_socs);
if (soc != NULL)
soc_dev = soc_device_to_device(soc);
of_platform_default_populate(NULL, NULL, soc_dev);
of_platform_default_populate(NULL, NULL, NULL);
at91sam9_pm_init();
}

52
arch/arm/mach-at91/sama5.c
View File

@ -15,60 +15,10 @@
#include <asm/system_misc.h>
#include "generic.h"
#include "soc.h"
static const struct at91_soc sama5_socs[] = {
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D21CU_EXID_MATCH,
"sama5d21", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D22CU_EXID_MATCH,
"sama5d22", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D23CU_EXID_MATCH,
"sama5d23", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D24CX_EXID_MATCH,
"sama5d24", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D24CU_EXID_MATCH,
"sama5d24", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D26CU_EXID_MATCH,
"sama5d26", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D27CU_EXID_MATCH,
"sama5d27", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D27CN_EXID_MATCH,
"sama5d27", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D28CU_EXID_MATCH,
"sama5d28", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D28CN_EXID_MATCH,
"sama5d28", "sama5d2"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D31_EXID_MATCH,
"sama5d31", "sama5d3"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D33_EXID_MATCH,
"sama5d33", "sama5d3"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D34_EXID_MATCH,
"sama5d34", "sama5d3"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D35_EXID_MATCH,
"sama5d35", "sama5d3"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D36_EXID_MATCH,
"sama5d36", "sama5d3"),
AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D41_EXID_MATCH,
"sama5d41", "sama5d4"),
AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D42_EXID_MATCH,
"sama5d42", "sama5d4"),
AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D43_EXID_MATCH,
"sama5d43", "sama5d4"),
AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D44_EXID_MATCH,
"sama5d44", "sama5d4"),
{ /* sentinel */ },
};
static void __init sama5_dt_device_init(void)
{
struct soc_device *soc;
struct device *soc_dev = NULL;
soc = at91_soc_init(sama5_socs);
if (soc != NULL)
soc_dev = soc_device_to_device(soc);
of_platform_default_populate(NULL, NULL, soc_dev);
of_platform_default_populate(NULL, NULL, NULL);
sama5_pm_init();
}

142
arch/arm/mach-at91/soc.c
View File

@ -1,142 +0,0 @@
/*
* Copyright (C) 2015 Atmel
*
* Alexandre Belloni <alexandre.belloni@free-electrons.com
* Boris Brezillon <boris.brezillon@free-electrons.com
*
* 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.
*
*/
#define pr_fmt(fmt) "AT91: " fmt
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
#include "soc.h"
#define AT91_DBGU_CIDR 0x40
#define AT91_DBGU_EXID 0x44
#define AT91_CHIPID_CIDR 0x00
#define AT91_CHIPID_EXID 0x04
#define AT91_CIDR_VERSION(x) ((x) & 0x1f)
#define AT91_CIDR_EXT BIT(31)
#define AT91_CIDR_MATCH_MASK 0x7fffffe0
static int __init at91_get_cidr_exid_from_dbgu(u32 *cidr, u32 *exid)
{
struct device_node *np;
void __iomem *regs;
np = of_find_compatible_node(NULL, NULL, "atmel,at91rm9200-dbgu");
if (!np)
np = of_find_compatible_node(NULL, NULL,
"atmel,at91sam9260-dbgu");
if (!np)
return -ENODEV;
regs = of_iomap(np, 0);
of_node_put(np);
if (!regs) {
pr_warn("Could not map DBGU iomem range");
return -ENXIO;
}
*cidr = readl(regs + AT91_DBGU_CIDR);
*exid = readl(regs + AT91_DBGU_EXID);
iounmap(regs);
return 0;
}
static int __init at91_get_cidr_exid_from_chipid(u32 *cidr, u32 *exid)
{
struct device_node *np;
void __iomem *regs;
np = of_find_compatible_node(NULL, NULL, "atmel,sama5d2-chipid");
if (!np)
return -ENODEV;
regs = of_iomap(np, 0);
of_node_put(np);
if (!regs) {
pr_warn("Could not map DBGU iomem range");
return -ENXIO;
}
*cidr = readl(regs + AT91_CHIPID_CIDR);
*exid = readl(regs + AT91_CHIPID_EXID);
iounmap(regs);
return 0;
}
struct soc_device * __init at91_soc_init(const struct at91_soc *socs)
{
struct soc_device_attribute *soc_dev_attr;
const struct at91_soc *soc;
struct soc_device *soc_dev;
u32 cidr, exid;
int ret;
/*
* With SAMA5D2 and later SoCs, CIDR and EXID registers are no more
* in the dbgu device but in the chipid device whose purpose is only
* to expose these two registers.
*/
ret = at91_get_cidr_exid_from_dbgu(&cidr, &exid);
if (ret)
ret = at91_get_cidr_exid_from_chipid(&cidr, &exid);
if (ret) {
if (ret == -ENODEV)
pr_warn("Could not find identification node");
return NULL;
}
for (soc = socs; soc->name; soc++) {
if (soc->cidr_match != (cidr & AT91_CIDR_MATCH_MASK))
continue;
if (!(cidr & AT91_CIDR_EXT) || soc->exid_match == exid)
break;
}
if (!soc->name) {
pr_warn("Could not find matching SoC description\n");
return NULL;
}
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return NULL;
soc_dev_attr->family = soc->family;
soc_dev_attr->soc_id = soc->name;
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%X",
AT91_CIDR_VERSION(cidr));
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
kfree(soc_dev_attr->revision);
kfree(soc_dev_attr);
pr_warn("Could not register SoC device\n");
return NULL;
}
if (soc->family)
pr_info("Detected SoC family: %s\n", soc->family);
pr_info("Detected SoC: %s, revision %X\n", soc->name,
AT91_CIDR_VERSION(cidr));
return soc_dev;
}

1
drivers/soc/Kconfig
View File

@ -1,5 +1,6 @@
menu "SOC (System On Chip) specific Drivers"
source "drivers/soc/atmel/Kconfig"
source "drivers/soc/bcm/Kconfig"
source "drivers/soc/fsl/Kconfig"
source "drivers/soc/mediatek/Kconfig"

1
drivers/soc/Makefile
View File

@ -2,6 +2,7 @@
# Makefile for the Linux Kernel SOC specific device drivers.
#
obj-$(CONFIG_ARCH_AT91) += atmel/
obj-y += bcm/
obj-$(CONFIG_ARCH_DOVE) += dove/
obj-$(CONFIG_MACH_DOVE) += dove/

6
drivers/soc/atmel/Kconfig 100644
View File

@ -0,0 +1,6 @@
config AT91_SOC_ID
bool "SoC bus for Atmel ARM SoCs"
depends on ARCH_AT91 || COMPILE_TEST
default ARCH_AT91
help
Include support for the SoC bus on the Atmel ARM SoCs.

1
drivers/soc/atmel/Makefile 100644
View File

@ -0,0 +1 @@
obj-$(CONFIG_AT91_SOC_ID) += soc.o

231
drivers/soc/atmel/soc.c 100644
View File

@ -0,0 +1,231 @@
/*
* Copyright (C) 2015 Atmel
*
* Alexandre Belloni <alexandre.belloni@free-electrons.com
* Boris Brezillon <boris.brezillon@free-electrons.com
*
* 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.
*
*/
#define pr_fmt(fmt) "AT91: " fmt
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
#include "soc.h"
#define AT91_DBGU_CIDR 0x40
#define AT91_DBGU_EXID 0x44
#define AT91_CHIPID_CIDR 0x00
#define AT91_CHIPID_EXID 0x04
#define AT91_CIDR_VERSION(x) ((x) & 0x1f)
#define AT91_CIDR_EXT BIT(31)
#define AT91_CIDR_MATCH_MASK 0x7fffffe0
static const struct at91_soc __initconst socs[] = {
#ifdef CONFIG_SOC_AT91RM9200
AT91_SOC(AT91RM9200_CIDR_MATCH, 0, "at91rm9200 BGA", "at91rm9200"),
#endif
#ifdef CONFIG_SOC_AT91SAM9
AT91_SOC(AT91SAM9260_CIDR_MATCH, 0, "at91sam9260", NULL),
AT91_SOC(AT91SAM9261_CIDR_MATCH, 0, "at91sam9261", NULL),
AT91_SOC(AT91SAM9263_CIDR_MATCH, 0, "at91sam9263", NULL),
AT91_SOC(AT91SAM9G20_CIDR_MATCH, 0, "at91sam9g20", NULL),
AT91_SOC(AT91SAM9RL64_CIDR_MATCH, 0, "at91sam9rl64", NULL),
AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9M11_EXID_MATCH,
"at91sam9m11", "at91sam9g45"),
AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9M10_EXID_MATCH,
"at91sam9m10", "at91sam9g45"),
AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9G46_EXID_MATCH,
"at91sam9g46", "at91sam9g45"),
AT91_SOC(AT91SAM9G45_CIDR_MATCH, AT91SAM9G45_EXID_MATCH,
"at91sam9g45", "at91sam9g45"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9G15_EXID_MATCH,
"at91sam9g15", "at91sam9x5"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9G35_EXID_MATCH,
"at91sam9g35", "at91sam9x5"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9X35_EXID_MATCH,
"at91sam9x35", "at91sam9x5"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9G25_EXID_MATCH,
"at91sam9g25", "at91sam9x5"),
AT91_SOC(AT91SAM9X5_CIDR_MATCH, AT91SAM9X25_EXID_MATCH,
"at91sam9x25", "at91sam9x5"),
AT91_SOC(AT91SAM9N12_CIDR_MATCH, AT91SAM9CN12_EXID_MATCH,
"at91sam9cn12", "at91sam9n12"),
AT91_SOC(AT91SAM9N12_CIDR_MATCH, AT91SAM9N12_EXID_MATCH,
"at91sam9n12", "at91sam9n12"),
AT91_SOC(AT91SAM9N12_CIDR_MATCH, AT91SAM9CN11_EXID_MATCH,
"at91sam9cn11", "at91sam9n12"),
AT91_SOC(AT91SAM9XE128_CIDR_MATCH, 0, "at91sam9xe128", "at91sam9xe128"),
AT91_SOC(AT91SAM9XE256_CIDR_MATCH, 0, "at91sam9xe256", "at91sam9xe256"),
AT91_SOC(AT91SAM9XE512_CIDR_MATCH, 0, "at91sam9xe512", "at91sam9xe512"),
#endif
#ifdef CONFIG_SOC_SAMA5
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D21CU_EXID_MATCH,
"sama5d21", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D22CU_EXID_MATCH,
"sama5d22", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D23CU_EXID_MATCH,
"sama5d23", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D24CX_EXID_MATCH,
"sama5d24", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D24CU_EXID_MATCH,
"sama5d24", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D26CU_EXID_MATCH,
"sama5d26", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D27CU_EXID_MATCH,
"sama5d27", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D27CN_EXID_MATCH,
"sama5d27", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D28CU_EXID_MATCH,
"sama5d28", "sama5d2"),
AT91_SOC(SAMA5D2_CIDR_MATCH, SAMA5D28CN_EXID_MATCH,
"sama5d28", "sama5d2"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D31_EXID_MATCH,
"sama5d31", "sama5d3"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D33_EXID_MATCH,
"sama5d33", "sama5d3"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D34_EXID_MATCH,
"sama5d34", "sama5d3"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D35_EXID_MATCH,
"sama5d35", "sama5d3"),
AT91_SOC(SAMA5D3_CIDR_MATCH, SAMA5D36_EXID_MATCH,
"sama5d36", "sama5d3"),
AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D41_EXID_MATCH,
"sama5d41", "sama5d4"),
AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D42_EXID_MATCH,
"sama5d42", "sama5d4"),
AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D43_EXID_MATCH,
"sama5d43", "sama5d4"),
AT91_SOC(SAMA5D4_CIDR_MATCH, SAMA5D44_EXID_MATCH,
"sama5d44", "sama5d4"),
#endif
{ /* sentinel */ },
};
static int __init at91_get_cidr_exid_from_dbgu(u32 *cidr, u32 *exid)
{
struct device_node *np;
void __iomem *regs;
np = of_find_compatible_node(NULL, NULL, "atmel,at91rm9200-dbgu");
if (!np)
np = of_find_compatible_node(NULL, NULL,
"atmel,at91sam9260-dbgu");
if (!np)
return -ENODEV;
regs = of_iomap(np, 0);
of_node_put(np);
if (!regs) {
pr_warn("Could not map DBGU iomem range");
return -ENXIO;
}
*cidr = readl(regs + AT91_DBGU_CIDR);
*exid = readl(regs + AT91_DBGU_EXID);
iounmap(regs);
return 0;
}
static int __init at91_get_cidr_exid_from_chipid(u32 *cidr, u32 *exid)
{
struct device_node *np;
void __iomem *regs;
np = of_find_compatible_node(NULL, NULL, "atmel,sama5d2-chipid");
if (!np)
return -ENODEV;
regs = of_iomap(np, 0);
of_node_put(np);
if (!regs) {
pr_warn("Could not map DBGU iomem range");
return -ENXIO;
}
*cidr = readl(regs + AT91_CHIPID_CIDR);
*exid = readl(regs + AT91_CHIPID_EXID);
iounmap(regs);
return 0;
}
struct soc_device * __init at91_soc_init(const struct at91_soc *socs)
{
struct soc_device_attribute *soc_dev_attr;
const struct at91_soc *soc;
struct soc_device *soc_dev;
u32 cidr, exid;
int ret;
/*
* With SAMA5D2 and later SoCs, CIDR and EXID registers are no more
* in the dbgu device but in the chipid device whose purpose is only
* to expose these two registers.
*/
ret = at91_get_cidr_exid_from_dbgu(&cidr, &exid);
if (ret)
ret = at91_get_cidr_exid_from_chipid(&cidr, &exid);
if (ret) {
if (ret == -ENODEV)
pr_warn("Could not find identification node");
return NULL;
}
for (soc = socs; soc->name; soc++) {
if (soc->cidr_match != (cidr & AT91_CIDR_MATCH_MASK))
continue;
if (!(cidr & AT91_CIDR_EXT) || soc->exid_match == exid)
break;
}
if (!soc->name) {
pr_warn("Could not find matching SoC description\n");
return NULL;
}
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return NULL;
soc_dev_attr->family = soc->family;
soc_dev_attr->soc_id = soc->name;
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%X",
AT91_CIDR_VERSION(cidr));
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
kfree(soc_dev_attr->revision);
kfree(soc_dev_attr);
pr_warn("Could not register SoC device\n");
return NULL;
}
if (soc->family)
pr_info("Detected SoC family: %s\n", soc->family);
pr_info("Detected SoC: %s, revision %X\n", soc->name,
AT91_CIDR_VERSION(cidr));
return soc_dev;
}
static int __init atmel_soc_device_init(void)
{
at91_soc_init(socs);
return 0;
}
subsys_initcall(atmel_soc_device_init);

0
arch/arm/mach-at91/soc.h → drivers/soc/atmel/soc.h
View File