HRT support in Samsung S5P Platform

arch/arm/mach-s5pv210/Kconfig +7 -0

+config SAMSUNG_HRT_RTC_SYSTIMER
+       bool "HRtimer and Dynamic Tick support"
+       select GENERIC_TIME
+       select GENERIC_CLOCKEVENTS
+       select HIGH_RES_TIMERS
+       help
+          Support for HRtimer and Dynamic Tick system using RTC and

SYSTEM timer
+

Quoted 9 lines · MADHAV SINGHCHAUHAN

+config SAMSUNG_HRT_RTC_SYSTIMER
+ ? ? ? bool "HRtimer and Dynamic Tick support"
+ ? ? ? select GENERIC_TIME
+ ? ? ? select GENERIC_CLOCKEVENTS
+ ? ? ? select HIGH_RES_TIMERS
+ ? ? ? help
+ ? ? ? ? ?Support for HRtimer and Dynamic Tick system using RTC and SYSTEM timer
+

Do you really need a config option for this? I mean HRT has a config option already ..

Daniel
--
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Subject: [PATCH] HRT support in Samsung S5P Platform
From: Jaecheol Lee <[email protected]>
?In this version of patch credits are corrected,and accepted reviewers ?comment like removing 'default n' in Kconfig, removing redundant clock ?source etc.
?Signed-off-by: Jaecheol Lee <[email protected]> ?Signed-off-by: Madhav Chauhan <[email protected]> ?Signed-off-by: Kyungmin Park <[email protected]>

---

?arch/arm/mach-s5pv210/Kconfig ? ? ? ? ? ? ? ? ? | ? ?8 +
?arch/arm/mach-s5pv210/include/mach/map.h ? ? ? ?| ? ?3 +
?arch/arm/plat-s5p/Makefile ? ? ? ? ? ? ? ? ? ? ?| ? ?2 +-
?arch/arm/plat-s5p/clock.c ? ? ? ? ? ? ? ? ? ? ? | ? ?8 +-
?arch/arm/plat-s5p/hr-time-rtc.c ? ? ? ? ? ? ? ? | ?462 +++++++++++++++++++++++
?arch/arm/plat-s5p/include/plat/regs-sys-timer.h | ? 63 +++
?arch/arm/plat-samsung/Makefile ? ? ? ? ? ? ? ? ?| ? ?2 +
?arch/arm/plat-samsung/include/plat/regs-rtc.h ? | ? ?4 +

?8 files changed, 550 insertions(+), 2 deletions(-) ?create mode 100644 arch/arm/plat-s5p/hr-time-rtc.c ?create mode 100644 arch/arm/plat-s5p/include/plat/regs-sys-timer.h

arch/arm/mach-s5pv210/Kconfig +0 -0

index 631019a..8b2c51f 100644
@@ -101,4 +101,12 @@ config MACH_SMDKC110

? ? ? ? ?Machine support for Samsung SMDKC110
? ? ? ? ?S5PC110(MCP) is one of package option of S5PV210

arch/arm/mach-s5pv210/Kconfig +8 -0

+config SAMSUNG_HRT_RTC_SYSTIMER
+ ? ? ? bool "HRtimer and Dynamic Tick support"
+ ? ? ? select GENERIC_TIME
+ ? ? ? select GENERIC_CLOCKEVENTS
+ ? ? ? select HIGH_RES_TIMERS
+ ? ? ? help
+ ? ? ? ? ?Support for HRtimer and Dynamic Tick system using RTC and SYSTEM timer
+

?endif

arch/arm/mach-s5pv210/include/mach/map.h +3 -0

index 17687f0..9d6cc3c 100644
@@ -43,6 +43,9 @@
 
 ?#define S5PV210_PA_SYSTIMER ? ?(0xE2600000)
 
+#define S5PC11X_PA_RTC ? ? ? ? (0xE2800000)
+#define S3C_PA_RTC ? ? ? ? ? ? S5PC11X_PA_RTC
+
 ?#define S5PV210_PA_WATCHDOG ? ?(0xE2700000)
 
 ?#define S5PV210_PA_UART ? ? ? ? ? ? ? ?(0xE2900000)

arch/arm/plat-s5p/Makefile +0 -0

index 18c9e34..78f0af7 100644
@@ -18,4 +18,4 @@ obj-y ? ? ? ? ? ? ? ? ? ? ? ? += cpu.o

?obj-y ? ? ? ? ? ? ? ? ? ? ? ? ?+= clock.o ?obj-y ? ? ? ? ? ? ? ? ? ? ? ? ?+= irq.o irq-gpioint.o ?obj-$(CONFIG_S5P_EXT_INT) ? ? ?+= irq-eint.o

arch/arm/plat-s5p/Makefile +1 -1

-
+obj-$(CONFIG_SAMSUNG_HRT_RTC_SYSTIMER) += hr-time-rtc.o

arch/arm/plat-s5p/clock.c +7 -1

index b5e2552..e438ce3 100644
@@ -89,7 +89,12 @@ struct clk clk_arm = {
 ? ? ? ?.ctrlbit ? ? ? ?= 0,
 ?};
 
-/* Possible clock sources for APLL Mux */
+struct clk clk_ext_xtal_rtc = {
+ ? ? ? .name ? ? ? ? ? = "XrtcXTI",
+ ? ? ? .id ? ? ? ? ? ? = -1,
+ ? ? ? .rate ? ? ? ? ? = 32768,
+};
+
 ?static struct clk *clk_src_apll_list[] = {
 ? ? ? ?[0] = &clk_fin_apll,
 ? ? ? ?[1] = &clk_fout_apll,

@@ -149,6 +154,7 @@ static struct clk *s5p_clks[] __initdata = {
 ? ? ? ?&clk_arm,
 ? ? ? ?&clk_vpll,
 ? ? ? ?&clk_xusbxti,
+ ? ? ? &clk_ext_xtal_rtc,
 ?};
 
 ?void __init s5p_register_clocks(unsigned long xtal_freq)

arch/arm/plat-s5p/hr-time-rtc.c new file +62 -0

new file mode 100644
index 0000000..a6b3ed6
@@ -0,0 +1,462 @@
+/*
+ * linux/arch/arm/plat-s5p/hr-time-rtc.c
+ *
+ * S5PC11X Timers
+ *
+ * Copyright (c) 2009-2010 Samsung Electronics
+ *
+ * S5PC11X (and compatible) HRT support using RTC and SYSTEM TIMER
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ?See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA ?02111-1307 ?USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/clocksource.h>
+#include <linux/clockchips.h>
+#include <linux/io.h>
+#include <asm/system.h>
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+#include <asm/mach-types.h>
+#include <mach/map.h>
+#include <plat/regs-timer.h>
+#include <plat/regs-rtc.h>
+#include <plat/regs-sys-timer.h>
+#include <mach/regs-irq.h>
+#include <mach/tick.h>
+#include <plat/clock.h>
+#include <plat/cpu.h>
+
+/*For SCHED_CLOCK*/
+static unsigned long long time_stamp;
+static unsigned long long s5pc11x_sched_timer_overflows;
+static unsigned long long old_overflows;
+static cycle_t last_ticks;
+
+/*
+ * Sched timer interrupt is not processed right after
+ * timer counter expired
+ */
+static unsigned int pending_irq;
+

arch/arm/plat-s5p/hr-time-rtc.c new file +186 -0

+
+#define RTC_CLOCK ? ? ? ? ? ? ?(32768)
+#define RTC_DEFAULT_TICK ? ? ? ((RTC_CLOCK / HZ) - 1)
+
+/*
+ * Helper functions
+ * s5pc11x_systimer_read() : Read from System timer register
+ * s5pc11x_systimer_write(): Write to System timer register
+ *
+ */
+static unsigned int s5pc11x_systimer_read(unsigned int *reg_offset)
+{
+ ? ? ? return __raw_readl(reg_offset);
+}
+
+static unsigned int s5pc11x_systimer_write(unsigned int *reg_offset,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? unsigned int value)
+{
+ ? ? ? unsigned int temp_regs;
+
+ ? ? ? __raw_writel(value, reg_offset);
+
+ ? ? ? if (reg_offset == S5P_SYSTIMER_TCON) {
+ ? ? ? ? ? ? ? while (!(__raw_readl(S5P_SYSTIMER_INT_CSTAT) &
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? S5P_SYSTIMER_INT_TCON));
+ ? ? ? ? ? ? ? temp_regs = __raw_readl(S5P_SYSTIMER_INT_CSTAT);
+ ? ? ? ? ? ? ? temp_regs |= S5P_SYSTIMER_INT_TCON;
+ ? ? ? ? ? ? ? __raw_writel(temp_regs, S5P_SYSTIMER_INT_CSTAT);
+
+ ? ? ? } else if (reg_offset == S5P_SYSTIMER_ICNTB) {
+ ? ? ? ? ? ? ? while (!(__raw_readl(S5P_SYSTIMER_INT_CSTAT) &
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? S5P_SYSTIMER_INT_ICNTB));
+ ? ? ? ? ? ? ? temp_regs = __raw_readl(S5P_SYSTIMER_INT_CSTAT);
+ ? ? ? ? ? ? ? temp_regs |= S5P_SYSTIMER_INT_ICNTB;
+ ? ? ? ? ? ? ? __raw_writel(temp_regs, S5P_SYSTIMER_INT_CSTAT);
+
+ ? ? ? } else if (reg_offset == S5P_SYSTIMER_TCNTB) {
+ ? ? ? ? ? ? ? while (!(__raw_readl(S5P_SYSTIMER_INT_CSTAT) &
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? S5P_SYSTIMER_INT_TCNTB));
+ ? ? ? ? ? ? ? temp_regs = __raw_readl(S5P_SYSTIMER_INT_CSTAT);
+ ? ? ? ? ? ? ? temp_regs |= S5P_SYSTIMER_INT_TCNTB;
+ ? ? ? ? ? ? ? __raw_writel(temp_regs, S5P_SYSTIMER_INT_CSTAT);
+ ? ? ? }
+
+ ? ? ? return 0;
+}
+
+static void s5pc11x_rtc_set_tick(int enabled)
+{
+ ? ? ? unsigned int tmp;
+
+ ? ? ? tmp = __raw_readl(rtc_base + S3C2410_RTCCON) & ~S3C_RTCCON_TICEN;
+ ? ? ? if (enabled)
+ ? ? ? ? ? ? ? tmp |= S3C_RTCCON_TICEN;
+ ? ? ? __raw_writel(tmp, rtc_base + S3C2410_RTCCON);
+}
+
+static void s5pc11x_tick_timer_setup(void);
+
+static void s5pc11x_tick_timer_start(unsigned long load_val,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? int autoreset)
+{
+ ? ? ? unsigned int tmp;
+
+ ? ? ? tmp = __raw_readl(rtc_base + S3C2410_RTCCON) &
+ ? ? ? ? ? ? ? ~(S3C_RTCCON_TICEN | S3C2410_RTCCON_RTCEN);
+ ? ? ? __raw_writel(tmp, rtc_base + S3C2410_RTCCON);
+
+ ? ? ? __raw_writel(load_val, rtc_base + S3C2410_TICNT);
+
+ ? ? ? tmp |= S3C_RTCCON_TICEN;
+
+ ? ? ? __raw_writel(tmp, rtc_base + S3C2410_RTCCON);
+}
+
+static ?void s5pc11x_tick_timer_stop(void)
+{
+ ? ? ? unsigned int tmp;
+
+ ? ? ? tmp = __raw_readl(rtc_base + S3C2410_RTCCON) &
+ ? ? ? ? ? ? ? ~(S3C_RTCCON_TICEN | S3C2410_RTCCON_RTCEN);
+
+ ? ? ? __raw_writel(tmp, rtc_base + S3C2410_RTCCON);
+
+}
+
+static void s5pc11x_sched_timer_start(unsigned long load_val,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? int autoreset)
+{
+ ? ? ? unsigned long tcon;
+ ? ? ? unsigned long tcnt;
+ ? ? ? unsigned long tcfg;
+
+ ? ? ? /* clock configuration setting and enable */
+ ? ? ? struct clk *clk;
+
+ ? ? ? tcnt = TICK_MAX; ?/* default value for tcnt */
+
+ ? ? ? /* initialize system timer clock */
+ ? ? ? tcfg = s5pc11x_systimer_read(S5P_SYSTIMER_TCFG);
+
+ ? ? ? tcfg &= ~S5P_SYSTIMER_TCLK_MASK;
+ ? ? ? tcfg |= S5P_SYSTIMER_TCLK_USB;
+
+ ? ? ? s5pc11x_systimer_write(S5P_SYSTIMER_TCFG, tcfg);
+
+ ? ? ? /* TCFG must not be changed at run-time.
+ ? ? ? ?* If you want to change TCFG, stop timer(TCON[0] = 0)
+ ? ? ? ?*/
+ ? ? ? s5pc11x_systimer_write(S5P_SYSTIMER_TCON, 0);
+
+ ? ? ? /* read the current timer configuration bits */
+ ? ? ? tcon = s5pc11x_systimer_read(S5P_SYSTIMER_TCON);
+ ? ? ? tcfg = s5pc11x_systimer_read(S5P_SYSTIMER_TCFG);
+
+ ? ? ? clk = clk_get(NULL, "systimer");
+ ? ? ? if (IS_ERR(clk))
+ ? ? ? ? ? ? ? panic("failed to get clock[%s] for system timer", "systimer");
+
+ ? ? ? clk_enable(clk);
+
+ ? ? ? clk_put(clk);
+
+ ? ? ? tcfg &= ~S5P_SYSTIMER_TCLK_MASK;
+ ? ? ? tcfg |= S5P_SYSTIMER_TCLK_USB;
+ ? ? ? tcfg &= ~S5P_SYSTIMER_PRESCALER_MASK;
+
+ ? ? ? /* check to see if timer is within 16bit range... */
+ ? ? ? if (tcnt > TICK_MAX) {
+ ? ? ? ? ? ? ? panic("setup_timer: cannot configure timer!");
+ ? ? ? ? ? ? ? return;
+ ? ? ? }
+
+ ? ? ? s5pc11x_systimer_write(S5P_SYSTIMER_TCFG, tcfg);
+
+ ? ? ? s5pc11x_systimer_write(S5P_SYSTIMER_TCNTB, tcnt);
+
+ ? ? ? /* set timer con */
+ ? ? ? tcon = ?S5P_SYSTIMER_INT_AUTO | S5P_SYSTIMER_START |
+ ? ? ? ? ? ? ? ? ? ? ? S5P_SYSTIMER_AUTO_RELOAD;
+ ? ? ? s5pc11x_systimer_write(S5P_SYSTIMER_TCON, tcon);
+
+ ? ? ? tcon |= S5P_SYSTIMER_INT_START;
+ ? ? ? s5pc11x_systimer_write(S5P_SYSTIMER_TCON, tcon);
+
+ ? ? ? /* Interrupt Start and Enable */
+ ? ? ? s5pc11x_systimer_write(S5P_SYSTIMER_INT_CSTAT,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (S5P_SYSTIMER_INT_ICNTEIE |
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? S5P_SYSTIMER_INT_EN));
+ ? ? ? sched_timer_running = 1;
+}
+
+/*
+ * RTC tick : count down to zero, interrupt, reload
+ */
+static int s5pc11x_tick_set_next_event(unsigned long cycles,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?struct clock_event_device *evt)
+{
+ ? ? ? if ?(cycles == 0) ? ? ? /* Should be larger than 0 */
+ ? ? ? ? ? ? ? cycles = 1;
+ ? ? ? s5pc11x_tick_timer_start(cycles, 0);
+ ? ? ? return 0;
+}
+
+static void s5pc11x_tick_set_mode(enum clock_event_mode mode,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? struct clock_event_device *evt)
+{
+ ? ? ? switch (mode) {
+ ? ? ? case CLOCK_EVT_MODE_PERIODIC:
+ ? ? ? ? ? ? ? tick_timer_mode = 1;
+ ? ? ? ? ? ? ? break;
+ ? ? ? case CLOCK_EVT_MODE_ONESHOT:
+ ? ? ? ? ? ? ? s5pc11x_tick_timer_stop();
+ ? ? ? ? ? ? ? tick_timer_mode = 0;
+ ? ? ? ? ? ? ? break;
+ ? ? ? case CLOCK_EVT_MODE_UNUSED:
+ ? ? ? case CLOCK_EVT_MODE_SHUTDOWN:
+ ? ? ? ? ? ? ? /* Sched timer stopped */
+ ? ? ? ? ? ? ? sched_timer_running = 0;
+ ? ? ? ? ? ? ? /* Reset sched_clock variables after sleep/wakeup */
+ ? ? ? ? ? ? ? last_ticks = 0;
+ ? ? ? ? ? ? ? s5pc11x_sched_timer_overflows = 0;
+ ? ? ? ? ? ? ? old_overflows = 0;
+ ? ? ? ? ? ? ? pending_irq = 0;
+ ? ? ? ? ? ? ? break;
+ ? ? ? case CLOCK_EVT_MODE_RESUME:

arch/arm/plat-s5p/hr-time-rtc.c new file +15 -0

+ ? ? ? .set_next_event = s5pc11x_tick_set_next_event,
+ ? ? ? .set_mode ? ? ? = s5pc11x_tick_set_mode,
+};
+
+irqreturn_t s5pc11x_tick_timer_interrupt(int irq, void *dev_id)
+{
+ ? ? ? struct clock_event_device *evt = &clockevent_tick_timer;
+
+ ? ? ? __raw_writel(S3C_INTP_TIC, rtc_base + S3C_INTP);
+ ? ? ? /* In case of oneshot mode */
+ ? ? ? if (tick_timer_mode == 0)
+ ? ? ? ? ? ? ? s5pc11x_tick_timer_stop();
+
+ ? ? ? evt->event_handler(evt);
+

arch/arm/plat-s5p/hr-time-rtc.c new file +31 -0

+}
+
+/*
+ * ---------------------------------------------------------------------------
+ * SYSTEM TIMER ... free running 32-bit clock source and scheduler clock
+ * ---------------------------------------------------------------------------
+ */
+irqreturn_t s5pc11x_sched_timer_interrupt(int irq, void *dev_id)
+{
+ ? ? ? volatile unsigned int temp_cstat;
+
+ ? ? ? temp_cstat = s5pc11x_systimer_read(S5P_SYSTIMER_INT_CSTAT);
+ ? ? ? temp_cstat |= S5P_SYSTIMER_INT_STATS;
+
+ ? ? ? s5pc11x_systimer_write(S5P_SYSTIMER_INT_CSTAT, temp_cstat);
+
+ ? ? ? if (unlikely(pending_irq))
+ ? ? ? ? ? ? ? pending_irq = 0;
+ ? ? ? else
+ ? ? ? ? ? ? ? s5pc11x_sched_timer_overflows++;
+
+ ? ? ? return IRQ_HANDLED;
+}
+
+struct irqaction s5pc11x_systimer_irq = {
+ ? ? ? .name ? ? ? ? ? = "System timer",
+ ? ? ? .flags ? ? ? ? ?= IRQF_DISABLED ,
+ ? ? ? .handler ? ? ? ?= s5pc11x_sched_timer_interrupt,
+};
+
+static cycle_t s5pc11x_sched_timer_read(void)

arch/arm/plat-s5p/hr-time-rtc.c new file +30 -0

+
+
+ ? ? ? s5pc11x_sched_timer_start(~0, 1);
+
+ ? ? ? if (clocksource_register(&clocksource_s5pc11x))
+ ? ? ? ? ? ? ? printk(err, clocksource_s5pc11x.name);
+}
+
+/*
+ * Returns current time from boot in nsecs. It's OK for this to wrap
+ * around for now, as it's just a relative time stamp.
+ */
+unsigned long long sched_clock(void)
+{
+ ? ? ? unsigned long irq_flags;
+ ? ? ? cycle_t ticks, elapsed_ticks = 0;
+ ? ? ? unsigned long long increment = 0;
+ ? ? ? unsigned int overflow_cnt = 0;
+
+ ? ? ? local_irq_save(irq_flags);
+
+ ? ? ? if (likely(sched_timer_running)) {
+ ? ? ? ? ? ? ? overflow_cnt = (s5pc11x_sched_timer_overflows - old_overflows);
+
+ ? ? ? ? ? ? ? ticks = s5pc11x_sched_timer_read();
+
+ ? ? ? ? ? ? ? if (overflow_cnt) {
+ ? ? ? ? ? ? ? ? ? ? ? increment = (overflow_cnt - 1) *
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (clocksource_cyc2ns(clocksource_s5pc11x.mask,
+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? clocksource_s5pc11x.mult, clocksource_s5pc11x.shift));

arch/arm/plat-s5p/hr-time-rtc.c new file +25 -0

+
+ ? ? ? ? ? ? ? time_stamp += (clocksource_cyc2ns(elapsed_ticks, clocksource_s5pc11x.mult, clocksource_s5pc11x.shift) + increment);
+
+ ? ? ? ? ? ? ? old_overflows = s5pc11x_sched_timer_overflows;
+ ? ? ? ? ? ? ? last_ticks = ticks;
+ ? ? ? }
+ ? ? ? local_irq_restore(irq_flags);
+
+ ? ? ? return time_stamp;
+}
+
+/*
+ * ?Event/Sched Timer initialization
+ */
+static void s5pc11x_timer_setup(void)
+{
+ ? ? ? unsigned long rate;
+
+ ? ? ? /* Setup event timer using XrtcXTI */
+ ? ? ? if (clk_event == NULL)
+ ? ? ? ? ? ? ? clk_event = clk_get(NULL, "XrtcXTI");
+ ? ? ? if (IS_ERR(clk_event))
+ ? ? ? ? ? ? ? panic("failed to get clock for event timer");
+ ? ? ? rate = clk_get_rate(clk_event);
+ ? ? ? s5pc11x_init_dynamic_tick_timer(rate);

arch/arm/plat-s5p/hr-time-rtc.c new file +19 -0

+
+static void __init s5pc11x_timer_init(void)
+{
+ ? ? ? /* Initialize variables before starting each timers */
+ ? ? ? last_ticks = 0;
+ ? ? ? s5pc11x_sched_timer_overflows = 0;
+ ? ? ? old_overflows = 0;
+ ? ? ? time_stamp = 0;
+ ? ? ? sched_timer_running = 0;
+ ? ? ? pending_irq = 0;
+ ? ? ? s5pc11x_timer_setup();
+ ? ? ? setup_irq(IRQ_RTC_TIC, &s5pc11x_tick_timer_irq);
+ ? ? ? setup_irq(IRQ_SYSTIMER, &s5pc11x_systimer_irq);
+}
+
+struct sys_timer s3c24xx_timer = {
+ ? ? ? .init ? ? ? ? ? = s5pc11x_timer_init,
+};
+

arch/arm/plat-s5p/include/plat/regs-sys-timer.h new file +63 -0

new file mode 100644
index 0000000..912f1ac
@@ -0,0 +1,63 @@
+/* arch/arm/plat-s5p/include/plat/regs-sys-timer.h
+ *
+ * Copyright (c) 2008 Samsung Electronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * S5PC1XX System Timer configuration
+*/
+
+#ifndef __ASM_ARCH_REGS_SYS_TIMER_H
+#define __ASM_ARCH_REGS_SYS_TIMER_H
+
+#define S5P_SYSTIMERREG(x) ? ? ? ? ? ? (S5P_VA_SYSTIMER + (x))
+
+#define S5P_SYSTIMER_TCFG ? ? ? ? ? ? ?S5P_SYSTIMERREG(0x00)
+#define S5P_SYSTIMER_TCON ? ? ? ? ? ? ?S5P_SYSTIMERREG(0x04)
+#define S5P_SYSTIMER_TCNTB ? ? ? ? ? ? S5P_SYSTIMERREG(0x08)
+#define S5P_SYSTIMER_TCNTO ? ? ? ? ? ? S5P_SYSTIMERREG(0x0c)
+
+#define S5P_SYSTIMER_TFCNTB ? ? ? ? ? ?S5P_SYSTIMERREG(0x10)
+#define S5P_SYSTIMER_ICNTB ? ? ? ? ? ? S5P_SYSTIMERREG(0x18)
+#define S5P_SYSTIMER_ICNTO ? ? ? ? ? ? S5P_SYSTIMERREG(0x1c)
+#define S5P_SYSTIMER_INT_CSTAT ? ? ? ? S5P_SYSTIMERREG(0x20)
+
+/* Value for TCFG */
+#define S5P_SYSTIMER_TCLK_MASK ? ? ? ? (3<<12)
+#define S5P_SYSTIMER_TCLK_XXTI ? ? ? ? (0<<12)
+#define S5P_SYSTIMER_TCLK_RTC ? ? ? ? ?(1<<12)
+#define S5P_SYSTIMER_TCLK_USB ? ? ? ? ?(2<<12)
+#define S5P_SYSTIMER_TCLK_PCLK ? ? ? ? (3<<12)
+
+#define S5P_SYSTIMER_DIV_MASK ? ? ? ? ?(7<<8)
+#define S5P_SYSTIMER_DIV_1 ? ? ? ? ? ? (0<<8)
+#define S5P_SYSTIMER_DIV_2 ? ? ? ? ? ? (1<<8)
+#define S5P_SYSTIMER_DIV_4 ? ? ? ? ? ? (2<<8)
+#define S5P_SYSTIMER_DIV_8 ? ? ? ? ? ? (3<<8)
+#define S5P_SYSTIMER_DIV_16 ? ? ? ? ? ?(4<<8)
+
+#define S5P_SYSTIMER_TARGET_HZ ? ? ? ? 200
+#define S5P_SYSTIMER_PRESCALER ? ? ? ? 5
+#define S5P_SYSTIMER_PRESCALER_MASK ? ?(0x3f<<0)
+
+/* value for TCON */
+#define S5P_SYSTIMER_INT_AUTO ? ? ? ? ?(1<<5)
+#define S5P_SYSTIMER_INT_IMM ? ? ? ? ? (1<<4)
+#define S5P_SYSTIMER_INT_START ? ? ? ? (1<<3)
+#define S5P_SYSTIMER_AUTO_RELOAD ? ? ? (1<<2)
+#define S5P_SYSTIMER_IMM_UPDATE ? ? ? ? ? ? ? ?(1<<1)
+#define S5P_SYSTIMER_START ? ? ? ? ? ? (1<<0)
+
+/* Value for INT_CSTAT */
+#define S5P_SYSTIMER_INT_IWIE ? ? ? ? ?(1<<9)
+#define S5P_SYSTIMER_INT_TWIE ? ? ? ? ?(1<<10)
+#define S5P_SYSTIMER_INT_ICNTEIE ? ? ? (1<<6)
+#define S5P_SYSTIMER_INT_TCON ? ? ? ? ?(1<<5)
+#define S5P_SYSTIMER_INT_ICNTB ? ? ? ? (1<<4)
+#define S5P_SYSTIMER_INT_TCNTB ? ? ? ? (1<<2)
+#define S5P_SYSTIMER_INT_STATS ? ? ? ? (1<<1)
+#define S5P_SYSTIMER_INT_EN ? ? ? ? ? ?(1<<0)
+
+#endif /* ?__ASM_ARCH_REGS_TIMER_H */

arch/arm/plat-samsung/Makefile +0 -0

index 8269d80..a61c93c 100644
@@ -12,7 +12,9 @@ obj- ? ? ? ? ? ? ? ? ? ? ? ? ?:=

?# Objects we always build independent of SoC choice

?obj-y ? ? ? ? ? ? ? ? ? ? ? ? ?+= init.o
+ifndef CONFIG_SAMSUNG_HRT_RTC_SYSTIMER
?obj-y ? ? ? ? ? ? ? ? ? ? ? ? ?+= time.o
+endif
?obj-y ? ? ? ? ? ? ? ? ? ? ? ? ?+= clock.o
?obj-y ? ? ? ? ? ? ? ? ? ? ? ? ?+= pwm-clock.o
?obj-y ? ? ? ? ? ? ? ? ? ? ? ? ?+= gpio.o

arch/arm/plat-samsung/include/plat/regs-rtc.h +4 -1

index 65c190d..da1abf6 100644
@@ -21,6 +21,10 @@
 ?#define S3C2410_RTCCON_CNTSEL (1<<2)
 ?#define S3C2410_RTCCON_CLKRST (1<<3)
 ?#define S3C64XX_RTCCON_TICEN ?(1<<8)
+#define S3C_INTP ? ? ? ? ? ? ? S3C2410_RTCREG(0X30)
+#define S3C_INTP_ALM ? ? ? ? ? (1<<1)
+#define S3C_INTP_TIC ? ? ? ? ? (1<<0)
+#define S3C_RTCCON_TICEN ? ? ? (1<<8)
 
 ?#define S3C64XX_RTCCON_TICMSK (0xF<<7)
 ?#define S3C64XX_RTCCON_TICSHT (7)
--

1.6.0.4

Quoted 13 lines · Daniel Walker

Quoted 9 lines · MADHAV SINGHCHAUHAN

arch/arm/mach-s5pv210/Kconfig +7 -0

+config SAMSUNG_HRT_RTC_SYSTIMER
+       bool "HRtimer and Dynamic Tick support"
+       select GENERIC_TIME
+       select GENERIC_CLOCKEVENTS
+       select HIGH_RES_TIMERS
+       help
+          Support for HRtimer and Dynamic Tick system using RTC and

SYSTEM timer
+

Do you really need a config option for this? I mean HRT has a config option already ..

It mean which timer use for HRT. there are several combination to implement the HRT.
Do you mean add the depends on HRT?