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Commit b32de9dd authored by Alexandre Belloni's avatar Alexandre Belloni
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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: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent 8c9290ae
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Inline Side-by-side
Showing with 243 additions and 111 deletions
arch/arm/mach-at91/Makefile
View file @ b32de9dd
# #
# Makefile for the linux kernel. # Makefile for the linux kernel.
# #
obj-y := soc.o
# CPU-specific support # CPU-specific support
obj-$(CONFIG_SOC_AT91RM9200) += at91rm9200.o obj-$(CONFIG_SOC_AT91RM9200) += at91rm9200.o
......
arch/arm/mach-at91/at91rm9200.c
View file @ b32de9dd
...@@ -14,23 +14,10 @@ ...@@ -14,23 +14,10 @@
#include <asm/mach/arch.h> #include <asm/mach/arch.h>
#include "generic.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) static void __init at91rm9200_dt_device_init(void)
{ {
struct soc_device *soc; of_platform_default_populate(NULL, NULL, NULL);
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);
at91rm9200_pm_init(); at91rm9200_pm_init();
} }
......
arch/arm/mach-at91/at91sam9.c
View file @ b32de9dd
...@@ -14,54 +14,10 @@ ...@@ -14,54 +14,10 @@
#include <asm/system_misc.h> #include <asm/system_misc.h>
#include "generic.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) static void __init at91sam9_init(void)
{ {
struct soc_device *soc; of_platform_default_populate(NULL, NULL, NULL);
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);
at91sam9_pm_init(); at91sam9_pm_init();
} }
......
arch/arm/mach-at91/sama5.c
View file @ b32de9dd
...@@ -15,60 +15,10 @@ ...@@ -15,60 +15,10 @@
#include <asm/system_misc.h> #include <asm/system_misc.h>
#include "generic.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) static void __init sama5_dt_device_init(void)
{ {
struct soc_device *soc; of_platform_default_populate(NULL, NULL, NULL);
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);
sama5_pm_init(); sama5_pm_init();
} }
......
drivers/soc/Kconfig
View file @ b32de9dd
menu "SOC (System On Chip) specific Drivers" menu "SOC (System On Chip) specific Drivers"
source "drivers/soc/atmel/Kconfig"
source "drivers/soc/bcm/Kconfig" source "drivers/soc/bcm/Kconfig"
source "drivers/soc/fsl/Kconfig" source "drivers/soc/fsl/Kconfig"
source "drivers/soc/mediatek/Kconfig" source "drivers/soc/mediatek/Kconfig"
......
drivers/soc/Makefile
View file @ b32de9dd
...@@ -2,6 +2,7 @@ ...@@ -2,6 +2,7 @@
# Makefile for the Linux Kernel SOC specific device drivers. # Makefile for the Linux Kernel SOC specific device drivers.
# #
obj-$(CONFIG_ARCH_AT91) += atmel/
obj-y += bcm/ obj-y += bcm/
obj-$(CONFIG_ARCH_DOVE) += dove/ obj-$(CONFIG_ARCH_DOVE) += dove/
obj-$(CONFIG_MACH_DOVE) += dove/ obj-$(CONFIG_MACH_DOVE) += dove/
......
drivers/soc/atmel/Kconfig 0 → 100644
View file @ b32de9dd
config AT91_SOC_ID
bool "SoC bus for Atmel ARM SoCs"
depends on ARCH_AT91 || COMPILE_TEST
default ARCH_AT91
help
Include support for the SoC bus on the Atmel ARM SoCs.
drivers/soc/atmel/Makefile 0 → 100644
View file @ b32de9dd
obj-$(CONFIG_AT91_SOC_ID) += soc.o
arch/arm/mach-at91/soc.c → drivers/soc/atmel/soc.c
View file @ b32de9dd
...@@ -29,6 +29,87 @@ ...@@ -29,6 +29,87 @@
#define AT91_CIDR_EXT BIT(31) #define AT91_CIDR_EXT BIT(31)
#define AT91_CIDR_MATCH_MASK 0x7fffffe0 #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) static int __init at91_get_cidr_exid_from_dbgu(u32 *cidr, u32 *exid)
{ {
struct device_node *np; struct device_node *np;
...@@ -140,3 +221,11 @@ struct soc_device * __init at91_soc_init(const struct at91_soc *socs) ...@@ -140,3 +221,11 @@ struct soc_device * __init at91_soc_init(const struct at91_soc *socs)
return soc_dev; return soc_dev;
} }
static int __init atmel_soc_device_init(void)
{
at91_soc_init(socs);
return 0;
}
subsys_initcall(atmel_soc_device_init);
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