Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 68a433f1 authored by Tomasz Figa's avatar Tomasz Figa Committed by Kukjin Kim
Browse files

ARM: EXYNOS: Fix support of Exynos4210 rev0 SoC 



This patch extends exynos_init_time() function to handle Exynos4210
rev0 SoC, which differs in availability of system timers and needs
different clocksource initialization.

This makes it possible to use exynos_init_time() function as init_time
callback for all Exynos-based boards, including Universal_C210, which
originally had to use samsung_timer_init().

Signed-off-by: default avatarTomasz Figa <t.figa@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 7ec892ef

arch/arm/mach-exynos/Kconfig

+2 −1
Original line number Diff line number Diff line
@@ -250,6 +250,7 @@ config MACH_ARMLEX4210 
config MACH_UNIVERSAL_C210

	bool "Mobile UNIVERSAL_C210 Board"

	select CLKSRC_MMIO

	select CLKSRC_SAMSUNG_PWM

	select CPU_EXYNOS4210

	select EXYNOS4_SETUP_FIMC

	select EXYNOS4_SETUP_FIMD0
@@ -281,7 +282,6 @@ config MACH_UNIVERSAL_C210 
	select S5P_DEV_TV

	select S5P_GPIO_INT

	select S5P_SETUP_MIPIPHY

	select SAMSUNG_HRT

	help

	  Machine support for Samsung Mobile Universal S5PC210 Reference

	  Board.
@@ -410,6 +410,7 @@ config MACH_EXYNOS4_DT 
	depends on ARCH_EXYNOS4

	select ARM_AMBA

	select CLKSRC_OF

	select CLKSRC_SAMSUNG_PWM if CPU_EXYNOS4210

	select CPU_EXYNOS4210

	select KEYBOARD_SAMSUNG if INPUT_KEYBOARD

	select PINCTRL

arch/arm/mach-exynos/common.c

+29 −1
Original line number Diff line number Diff line
@@ -10,12 +10,14 @@ 
 */



#include <linux/kernel.h>

#include <linux/bitops.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/irqchip.h>

#include <linux/io.h>

#include <linux/device.h>

#include <linux/gpio.h>

#include <clocksource/samsung_pwm.h>

#include <linux/sched.h>

#include <linux/serial_core.h>

#include <linux/of.h>
@@ -302,6 +304,13 @@ static struct map_desc exynos5440_iodesc0[] __initdata = { 
	},

};



static struct samsung_pwm_variant exynos4_pwm_variant = {

	.bits		= 32,

	.div_base	= 0,

	.has_tint_cstat	= true,

	.tclk_mask	= 0,

};



void exynos4_restart(char mode, const char *cmd)

{

	__raw_writel(0x1, S5P_SWRESET);
@@ -442,8 +451,20 @@ static void __init exynos5440_map_io(void) 
	iotable_init(exynos5440_iodesc0, ARRAY_SIZE(exynos5440_iodesc0));

}



void __init exynos_set_timer_source(u8 channels)

{

	exynos4_pwm_variant.output_mask = BIT(SAMSUNG_PWM_NUM) - 1;

	exynos4_pwm_variant.output_mask &= ~channels;

}



void __init exynos_init_time(void)

{

	unsigned int timer_irqs[SAMSUNG_PWM_NUM] = {

		EXYNOS4_IRQ_TIMER0_VIC, EXYNOS4_IRQ_TIMER1_VIC,

		EXYNOS4_IRQ_TIMER2_VIC, EXYNOS4_IRQ_TIMER3_VIC,

		EXYNOS4_IRQ_TIMER4_VIC,

	};



	if (of_have_populated_dt()) {

#ifdef CONFIG_OF

		of_clk_init(NULL);
@@ -455,7 +476,14 @@ void __init exynos_init_time(void) 
		exynos4_clk_init(NULL, !soc_is_exynos4210(), S5P_VA_CMU, readl(S5P_VA_CHIPID + 8) & 1);

		exynos4_clk_register_fixed_ext(xxti_f, xusbxti_f);

#endif

		mct_init(S5P_VA_SYSTIMER, EXYNOS4_IRQ_MCT_G0, EXYNOS4_IRQ_MCT_L0, EXYNOS4_IRQ_MCT_L1);

#ifdef CONFIG_CLKSRC_SAMSUNG_PWM

		if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)

			samsung_pwm_clocksource_init(S3C_VA_TIMER,

					timer_irqs, &exynos4_pwm_variant);

		else

#endif

			mct_init(S5P_VA_SYSTIMER, EXYNOS4_IRQ_MCT_G0,

					EXYNOS4_IRQ_MCT_L0, EXYNOS4_IRQ_MCT_L1);

	}

}

arch/arm/mach-exynos/common.h

+2 −0
Original line number Diff line number Diff line
@@ -32,6 +32,8 @@ void exynos4_clk_register_fixed_ext(unsigned long, unsigned long); 


void exynos_firmware_init(void);



void exynos_set_timer_source(u8 channels);



#ifdef CONFIG_PM_GENERIC_DOMAINS

int exynos_pm_late_initcall(void);

#else

arch/arm/mach-exynos/mach-universal_c210.c

+2 −3
Original line number Diff line number Diff line
@@ -41,7 +41,6 @@ 
#include <plat/mfc.h>

#include <plat/sdhci.h>

#include <plat/fimc-core.h>

#include <plat/samsung-time.h>

#include <plat/camport.h>



#include <mach/map.h>
@@ -1094,7 +1093,7 @@ static void __init universal_map_io(void) 
{

	exynos_init_io(NULL, 0);

	s3c24xx_init_uarts(universal_uartcfgs, ARRAY_SIZE(universal_uartcfgs));

	samsung_set_timer_source(SAMSUNG_PWM2, SAMSUNG_PWM4);

	exynos_set_timer_source(BIT(2) | BIT(4));

	xxti_f = 0;

	xusbxti_f = 24000000;

}
@@ -1154,7 +1153,7 @@ MACHINE_START(UNIVERSAL_C210, "UNIVERSAL_C210") 
	.map_io		= universal_map_io,

	.init_machine	= universal_machine_init,

	.init_late	= exynos_init_late,

	.init_time	= samsung_timer_init,

	.init_time	= exynos_init_time,

	.reserve        = &universal_reserve,

	.restart	= exynos4_restart,

MACHINE_END