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ARM: exynos: enable multiplatform support

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This makes it possible to enable the exynos platform as part of a
multiplatform kernel, in addition to keeping the single-platform
exynos support.

The multiplatform variant has a number of limitations at the moment:

* It only supports DT-enabled machines. This is not a problem in
  the long run, as non-DT machines for exynos are going away.
  The main problem here is that the gpio code and the exynos_eint
  irqchip are not multiplatform capable but still required for
  ATAGS based boot.
* The watchdog driver is still missing a conversion.
* sparsemem and memory_holes are currently not supported in
  multiplatform.

The the multiplatform aware ARCH_EXYNOS Kconfig symbol is disabled
for now, as dependent patches are still pending in other
subsystem trees. We will enable it once everything comes together.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2013-04-10 14:57:15 +02:00
parent b9d7c5d3f4
commit bd51de53e1
9 changed files with 50 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
arch/arm/Kconfig
View file

@ -853,18 +853,11 @@ config ARCH_S5PV210
help
Samsung S5PV210/S5PC110 series based systems
config ARCH_EXYNOS
config ARCH_EXYNOS_SINGLE
bool "Samsung EXYNOS"
select ARCH_HAS_CPUFREQ
select ARCH_HAS_HOLES_MEMORYMODEL
select ARCH_SPARSEMEM_ENABLE
select CLKDEV_LOOKUP
select CPU_V7
select GENERIC_CLOCKEVENTS
select HAVE_CLK
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C2410_WATCHDOG if WATCHDOG
select HAVE_S3C_RTC if RTC_CLASS
select NEED_MACH_GPIO_H
select NEED_MACH_MEMORY_H
help

2
arch/arm/configs/exynos4_defconfig
View file

@ -4,7 +4,7 @@ CONFIG_KALLSYMS_ALL=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_ARCH_EXYNOS=y
CONFIG_ARCH_EXYNOS_SINGLE=y
CONFIG_S3C_LOWLEVEL_UART_PORT=1
CONFIG_MACH_SMDKC210=y
CONFIG_MACH_ARMLEX4210=y

25
arch/arm/mach-exynos/Kconfig
View file

@ -7,6 +7,20 @@
# Configuration options for the EXYNOS4
config ARCH_EXYNOS
# TODO: make this visible after all drivers are converted
bool "Samsung EXYNOS" if ARCH_MULTI_V7 && BROKEN
default ARCH_EXYNOS_SINGLE
select ARCH_HAS_CPUFREQ
select CLKDEV_LOOKUP
select CPU_V7
select GENERIC_CLOCKEVENTS
select HAVE_CLK
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C_RTC if RTC_CLASS
help
Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
if ARCH_EXYNOS
menu "SAMSUNG EXYNOS SoCs Support"
@ -19,6 +33,9 @@ config ARCH_EXYNOS4
help
Samsung EXYNOS4 SoCs based systems
config ARCH_EXYNOS4_SINGLE
def_bool ARCH_EXYNOS4 && ARCH_EXYNOS_SINGLE
config ARCH_EXYNOS5
bool "SAMSUNG EXYNOS5"
select HAVE_SMP
@ -35,7 +52,7 @@ config CPU_EXYNOS4210
select PM_GENERIC_DOMAINS
select S5P_PM if PM
select S5P_SLEEP if PM
select SAMSUNG_DMADEV
select SAMSUNG_DMADEV if ARCH_EXYNOS_SINGLE
help
Enable EXYNOS4210 CPU support
@ -45,7 +62,7 @@ config SOC_EXYNOS4212
depends on ARCH_EXYNOS4
select S5P_PM if PM
select S5P_SLEEP if PM
select SAMSUNG_DMADEV
select SAMSUNG_DMADEV if ARCH_EXYNOS_SINGLE
help
Enable EXYNOS4212 SoC support
@ -53,7 +70,7 @@ config SOC_EXYNOS4412
bool "SAMSUNG EXYNOS4412"
default y
depends on ARCH_EXYNOS4
select SAMSUNG_DMADEV
select SAMSUNG_DMADEV if ARCH_EXYNOS_SINGLE
help
Enable EXYNOS4412 SoC support
@ -64,7 +81,7 @@ config SOC_EXYNOS5250
select S5P_PM if PM
select S5P_SLEEP if PM
select S5P_DEV_MFC
select SAMSUNG_DMADEV
select SAMSUNG_DMADEV if ARCH_EXYNOS_SINGLE
help
Enable EXYNOS5250 SoC support

5
arch/arm/mach-exynos/Makefile
View file

@ -4,6 +4,7 @@
# http://www.samsung.com/
#
# Licensed under GPLv2
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) += -I$(srctree)/$(src)/include -I$(srctree)/arch/arm/plat-samsung/include
obj-y :=
obj-m :=
@ -48,12 +49,12 @@ obj-$(CONFIG_MACH_EXYNOS5_DT) += mach-exynos5-dt.o
# device support
obj-y += dev-uart.o
obj-$(CONFIG_ARCH_EXYNOS4) += dev-audio.o
obj-$(CONFIG_ARCH_EXYNOS4_SINGLE) += dev-audio.o
obj-$(CONFIG_EXYNOS4_DEV_AHCI) += dev-ahci.o
obj-$(CONFIG_EXYNOS_DEV_DMA) += dma.o
obj-$(CONFIG_EXYNOS4_DEV_USB_OHCI) += dev-ohci.o
obj-$(CONFIG_ARCH_EXYNOS) += setup-i2c0.o
obj-$(CONFIG_ARCH_EXYNOS_SINGLE) += setup-i2c0.o
obj-$(CONFIG_EXYNOS4_SETUP_FIMC) += setup-fimc.o
obj-$(CONFIG_EXYNOS4_SETUP_FIMD0) += setup-fimd0.o
obj-$(CONFIG_EXYNOS4_SETUP_I2C1) += setup-i2c1.o

6
arch/arm/mach-exynos/common.c
View file

@ -368,6 +368,9 @@ static void __init exynos4_map_io(void)
else
iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1));
if (!IS_ENABLED(CONFIG_EXYNOS_ATAGS))
return
/* initialize device information early */
exynos4_default_sdhci0();
exynos4_default_sdhci1();
@ -570,6 +573,8 @@ static void __init exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no)
s3c24xx_init_uartdevs("exynos4210-uart", exynos4_uart_resources, cfg, no);
}
#ifdef CONFIG_EXYNOS_ATAGS
static void __iomem *exynos_eint_base;
static DEFINE_SPINLOCK(eint_lock);
@ -875,3 +880,4 @@ static int __init exynos_init_irq_eint(void)
return 0;
}
arch_initcall(exynos_init_irq_eint);
#endif

7
arch/arm/plat-samsung/Kconfig
View file

@ -13,6 +13,10 @@ config PLAT_SAMSUNG
help
Base platform code for all Samsung SoC based systems
config PLAT_SAMSUNG_SINGLE
def_bool PLAT_SAMSUNG && !ARCH_MULTIPLATFORM
config PLAT_S5P
bool
depends on (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210 || ARCH_EXYNOS)
@ -23,7 +27,7 @@ config PLAT_S5P
select GIC_NON_BANKED if ARCH_EXYNOS4
select NO_IOPORT
select PLAT_SAMSUNG
select S3C_GPIO_TRACK
select S3C_GPIO_TRACK if PLAT_SAMSUNG_SINGLE
select S5P_GPIO_DRVSTR
select SAMSUNG_CLKSRC
select SAMSUNG_GPIOLIB_4BIT
@ -178,6 +182,7 @@ config S5P_DEV_UART
config S3C_ADC
bool "ADC common driver support"
depends on PLAT_SAMSUNG_SINGLE
help
Core support for the ADC block found in the Samsung SoC systems
for drivers such as the touchscreen and hwmon to use to share

8
arch/arm/plat-samsung/Makefile
View file

@ -4,6 +4,9 @@
#
# Licensed under GPLv2
ccflags-$(CONFIG_ARCH_MULTI_V7) += -I$(srctree)/$(src)/include
ccflags-$(CONFIG_ARCH_EXYNOS) += -I$(srctree)/arch/arm/mach-exynos/include
obj-y :=
obj-m :=
obj-n := dummy.o
@ -34,7 +37,7 @@ obj-$(CONFIG_S3C_ADC) += adc.o
obj-y += platformdata.o
obj-y += devs.o
obj-$(CONFIG_PLAT_SAMSUNG_SINGLE) += devs.o
obj-y += dev-uart.o
obj-$(CONFIG_S5P_DEV_MFC) += s5p-dev-mfc.o
obj-$(CONFIG_S5P_DEV_UART) += s5p-dev-uart.o
@ -51,9 +54,10 @@ obj-$(CONFIG_S3C_DMA) += dma.o s3c-dma-ops.o
obj-$(CONFIG_SAMSUNG_DMADEV) += dma-ops.o
# PM support
obj-$(CONFIG_PM) += pm.o
ifdef CONFIG_PLAT_SAMSUNG_SINGLE
obj-$(CONFIG_PM) += pm-gpio.o
endif
obj-$(CONFIG_SAMSUNG_PM_CHECK) += pm-check.o
obj-$(CONFIG_SAMSUNG_WAKEMASK) += wakeup-mask.o

5
arch/arm/plat-samsung/include/plat/pm.h
View file

@ -166,6 +166,7 @@ extern void s3c_pm_check_store(void);
*/
extern void s3c_pm_configure_extint(void);
#ifdef CONFIG_PLAT_SAMSUNG_SINGLE
/**
* samsung_pm_restore_gpios() - restore the state of the gpios after sleep.
*
@ -181,6 +182,10 @@ extern void samsung_pm_restore_gpios(void);
* Save the GPIO states for resotration on resume. See samsung_pm_restore_gpios().
*/
extern void samsung_pm_save_gpios(void);
#else
#define samsung_pm_restore_gpios() do { } while(0)
#define samsung_pm_save_gpios() do { } while(0)
#endif
extern void s3c_pm_save_core(void);
extern void s3c_pm_restore_core(void);

2
drivers/gpio/Makefile
View file

@ -57,7 +57,7 @@ obj-$(CONFIG_GPIO_PL061) += gpio-pl061.o
obj-$(CONFIG_GPIO_PXA) += gpio-pxa.o
obj-$(CONFIG_GPIO_RC5T583) += gpio-rc5t583.o
obj-$(CONFIG_GPIO_RDC321X) += gpio-rdc321x.o
obj-$(CONFIG_PLAT_SAMSUNG) += gpio-samsung.o
obj-$(CONFIG_PLAT_SAMSUNG_SINGLE) += gpio-samsung.o
obj-$(CONFIG_ARCH_SA1100) += gpio-sa1100.o
obj-$(CONFIG_GPIO_SCH) += gpio-sch.o
obj-$(CONFIG_GPIO_SODAVILLE) += gpio-sodaville.o