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authorLinus Torvalds <torvalds@linux-foundation.org>2011-11-01 20:22:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-01 20:22:01 -0700
commitcd9a0b6bd67ec372b0ef3cb2abe26974f888b956 (patch)
treeffec66aa48f95b2b764f9e84fbafc519cce5000e /arch/arm/mach-prima2
parentac5761a650d22dd7dfad4d417463a0981d2da0a4 (diff)
parent090ad104c5c59c7952d4b8d4cfb60559b38eb3e0 (diff)
Merge branch 'next/pm' of git://git.linaro.org/people/arnd/arm-soc
* 'next/pm' of git://git.linaro.org/people/arnd/arm-soc: (66 commits) ARM: CSR: PM: use outer_resume to resume L2 cache ARM: CSR: call l2x0_of_init to init L2 cache of SiRFprimaII ARM: OMAP: voltage: voltage layer present, even when CONFIG_PM=n ARM: CSR: PM: add sleep entry for SiRFprimaII ARM: CSR: PM: save/restore irq status in suspend cycle ARM: CSR: PM: save/restore timer status in suspend cycle OMAP4: PM: TWL6030: add cmd register OMAP4: PM: TWL6030: fix ON/RET/OFF voltages OMAP4: PM: TWL6030: address 0V conversions OMAP4: PM: TWL6030: fix uv to voltage for >0x39 OMAP4: PM: TWL6030: fix voltage conversion formula omap: voltage: add a stub header file for external/regulator use OMAP2+: VC: more registers are per-channel starting with OMAP5 OMAP3+: voltage: update nominal voltage in voltdm_scale() not VC post-scale OMAP3+: voltage: rename omap_voltage_get_nom_volt -> voltdm_get_voltage OMAP3+: voltdm: final removal of omap_vdd_info OMAP3+: voltage: move/rename curr_volt from vdd_info into struct voltagedomain OMAP3+: voltage: rename scale and reset functions using voltdm_ prefix OMAP3+: VP: combine setting init voltage into common function OMAP3+: VP: remove unused omap_vp_get_curr_volt() ... Fix up trivial conflict in arch/arm/mach-prima2/l2x0.c (code removal vs edit)
Diffstat (limited to 'arch/arm/mach-prima2')
-rw-r--r--arch/arm/mach-prima2/Makefile2
-rw-r--r--arch/arm/mach-prima2/irq.c43
-rw-r--r--arch/arm/mach-prima2/l2x0.c45
-rw-r--r--arch/arm/mach-prima2/pm.c150
-rw-r--r--arch/arm/mach-prima2/pm.h29
-rw-r--r--arch/arm/mach-prima2/rtciobrg.c139
-rw-r--r--arch/arm/mach-prima2/sleep.S64
-rw-r--r--arch/arm/mach-prima2/timer.c34
8 files changed, 470 insertions, 36 deletions
diff --git a/arch/arm/mach-prima2/Makefile b/arch/arm/mach-prima2/Makefile
index 7af7fc05d565..13dd1604d951 100644
--- a/arch/arm/mach-prima2/Makefile
+++ b/arch/arm/mach-prima2/Makefile
@@ -3,5 +3,7 @@ obj-y += irq.o
obj-y += clock.o
obj-y += rstc.o
obj-y += prima2.o
+obj-y += rtciobrg.o
obj-$(CONFIG_DEBUG_LL) += lluart.o
obj-$(CONFIG_CACHE_L2X0) += l2x0.o
+obj-$(CONFIG_SUSPEND) += pm.o sleep.o
diff --git a/arch/arm/mach-prima2/irq.c b/arch/arm/mach-prima2/irq.c
index 7af254d046ba..d93ceef4a50a 100644
--- a/arch/arm/mach-prima2/irq.c
+++ b/arch/arm/mach-prima2/irq.c
@@ -13,6 +13,8 @@
#include <asm/mach/irq.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/irqdomain.h>
+#include <linux/syscore_ops.h>
#define SIRFSOC_INT_RISC_MASK0 0x0018
#define SIRFSOC_INT_RISC_MASK1 0x001C
@@ -66,7 +68,48 @@ void __init sirfsoc_of_irq_init(void)
if (!sirfsoc_intc_base)
panic("unable to map intc cpu registers\n");
+ irq_domain_add_simple(np, 0);
+
of_node_put(np);
sirfsoc_irq_init();
}
+
+struct sirfsoc_irq_status {
+ u32 mask0;
+ u32 mask1;
+ u32 level0;
+ u32 level1;
+};
+
+static struct sirfsoc_irq_status sirfsoc_irq_st;
+
+static int sirfsoc_irq_suspend(void)
+{
+ sirfsoc_irq_st.mask0 = readl_relaxed(sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK0);
+ sirfsoc_irq_st.mask1 = readl_relaxed(sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK1);
+ sirfsoc_irq_st.level0 = readl_relaxed(sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL0);
+ sirfsoc_irq_st.level1 = readl_relaxed(sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL1);
+
+ return 0;
+}
+
+static void sirfsoc_irq_resume(void)
+{
+ writel_relaxed(sirfsoc_irq_st.mask0, sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK0);
+ writel_relaxed(sirfsoc_irq_st.mask1, sirfsoc_intc_base + SIRFSOC_INT_RISC_MASK1);
+ writel_relaxed(sirfsoc_irq_st.level0, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL0);
+ writel_relaxed(sirfsoc_irq_st.level1, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL1);
+}
+
+static struct syscore_ops sirfsoc_irq_syscore_ops = {
+ .suspend = sirfsoc_irq_suspend,
+ .resume = sirfsoc_irq_resume,
+};
+
+static int __init sirfsoc_irq_pm_init(void)
+{
+ register_syscore_ops(&sirfsoc_irq_syscore_ops);
+ return 0;
+}
+device_initcall(sirfsoc_irq_pm_init);
diff --git a/arch/arm/mach-prima2/l2x0.c b/arch/arm/mach-prima2/l2x0.c
index 66c6387e5a04..c99837797d76 100644
--- a/arch/arm/mach-prima2/l2x0.c
+++ b/arch/arm/mach-prima2/l2x0.c
@@ -8,51 +8,24 @@
#include <linux/init.h>
#include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/errno.h>
#include <linux/of.h>
-#include <linux/of_address.h>
#include <asm/hardware/cache-l2x0.h>
-#define L2X0_ADDR_FILTERING_START 0xC00
-#define L2X0_ADDR_FILTERING_END 0xC04
-
-static struct of_device_id l2x_ids[] = {
- { .compatible = "arm,pl310-cache" },
+static struct of_device_id prima2_l2x0_ids[] = {
+ { .compatible = "sirf,prima2-pl310-cache" },
+ {},
};
-static int __init sirfsoc_of_l2x_init(void)
+static int __init sirfsoc_l2x0_init(void)
{
struct device_node *np;
- void __iomem *sirfsoc_l2x_base;
-
- np = of_find_matching_node(NULL, l2x_ids);
- if (!np)
- panic("unable to find compatible l2x node in dtb\n");
-
- sirfsoc_l2x_base = of_iomap(np, 0);
- if (!sirfsoc_l2x_base)
- panic("unable to map l2x cpu registers\n");
-
- of_node_put(np);
-
- if (!(readl_relaxed(sirfsoc_l2x_base + L2X0_CTRL) & 1)) {
- /*
- * set the physical memory windows L2 cache will cover
- */
- writel_relaxed(PHYS_OFFSET + 1024 * 1024 * 1024,
- sirfsoc_l2x_base + L2X0_ADDR_FILTERING_END);
- writel_relaxed(PHYS_OFFSET | 0x1,
- sirfsoc_l2x_base + L2X0_ADDR_FILTERING_START);
- writel_relaxed(0,
- sirfsoc_l2x_base + L2X0_TAG_LATENCY_CTRL);
- writel_relaxed(0,
- sirfsoc_l2x_base + L2X0_DATA_LATENCY_CTRL);
+ np = of_find_matching_node(NULL, prima2_l2x0_ids);
+ if (np) {
+ pr_info("Initializing prima2 L2 cache\n");
+ return l2x0_of_init(0x40000, 0);
}
- l2x0_init((void __iomem *)sirfsoc_l2x_base, 0x00040000,
- 0x00000000);
return 0;
}
-early_initcall(sirfsoc_of_l2x_init);
+early_initcall(sirfsoc_l2x0_init);
diff --git a/arch/arm/mach-prima2/pm.c b/arch/arm/mach-prima2/pm.c
new file mode 100644
index 000000000000..cb53160f6c5d
--- /dev/null
+++ b/arch/arm/mach-prima2/pm.c
@@ -0,0 +1,150 @@
+/*
+ * power management entry for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/kernel.h>
+#include <linux/suspend.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+#include <linux/rtc/sirfsoc_rtciobrg.h>
+#include <asm/suspend.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include "pm.h"
+
+/*
+ * suspend asm codes will access these to make DRAM become self-refresh and
+ * system sleep
+ */
+u32 sirfsoc_pwrc_base;
+void __iomem *sirfsoc_memc_base;
+
+static void sirfsoc_set_wakeup_source(void)
+{
+ u32 pwr_trigger_en_reg;
+ pwr_trigger_en_reg = sirfsoc_rtc_iobrg_readl(sirfsoc_pwrc_base +
+ SIRFSOC_PWRC_TRIGGER_EN);
+#define X_ON_KEY_B (1 << 0)
+ sirfsoc_rtc_iobrg_writel(pwr_trigger_en_reg | X_ON_KEY_B,
+ sirfsoc_pwrc_base + SIRFSOC_PWRC_TRIGGER_EN);
+}
+
+static void sirfsoc_set_sleep_mode(u32 mode)
+{
+ u32 sleep_mode = sirfsoc_rtc_iobrg_readl(sirfsoc_pwrc_base +
+ SIRFSOC_PWRC_PDN_CTRL);
+ sleep_mode &= ~(SIRFSOC_SLEEP_MODE_MASK << 1);
+ sleep_mode |= mode << 1;
+ sirfsoc_rtc_iobrg_writel(sleep_mode, sirfsoc_pwrc_base +
+ SIRFSOC_PWRC_PDN_CTRL);
+}
+
+static int sirfsoc_pre_suspend_power_off(void)
+{
+ u32 wakeup_entry = virt_to_phys(cpu_resume);
+
+ sirfsoc_rtc_iobrg_writel(wakeup_entry, sirfsoc_pwrc_base +
+ SIRFSOC_PWRC_SCRATCH_PAD1);
+
+ sirfsoc_set_wakeup_source();
+
+ sirfsoc_set_sleep_mode(SIRFSOC_DEEP_SLEEP_MODE);
+
+ return 0;
+}
+
+static int sirfsoc_pm_enter(suspend_state_t state)
+{
+ switch (state) {
+ case PM_SUSPEND_MEM:
+ sirfsoc_pre_suspend_power_off();
+
+ outer_flush_all();
+ outer_disable();
+ /* go zzz */
+ cpu_suspend(0, sirfsoc_finish_suspend);
+ outer_resume();
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static const struct platform_suspend_ops sirfsoc_pm_ops = {
+ .enter = sirfsoc_pm_enter,
+ .valid = suspend_valid_only_mem,
+};
+
+static int __init sirfsoc_pm_init(void)
+{
+ suspend_set_ops(&sirfsoc_pm_ops);
+ return 0;
+}
+late_initcall(sirfsoc_pm_init);
+
+static const struct of_device_id pwrc_ids[] = {
+ { .compatible = "sirf,prima2-pwrc" },
+ {}
+};
+
+static int __init sirfsoc_of_pwrc_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_matching_node(NULL, pwrc_ids);
+ if (!np)
+ panic("unable to find compatible pwrc node in dtb\n");
+
+ /*
+ * pwrc behind rtciobrg is not located in memory space
+ * though the property is named reg. reg only means base
+ * offset for pwrc. then of_iomap is not suitable here.
+ */
+ if (of_property_read_u32(np, "reg", &sirfsoc_pwrc_base))
+ panic("unable to find base address of pwrc node in dtb\n");
+
+ of_node_put(np);
+
+ return 0;
+}
+postcore_initcall(sirfsoc_of_pwrc_init);
+
+static const struct of_device_id memc_ids[] = {
+ { .compatible = "sirf,prima2-memc" },
+ {}
+};
+
+static int __devinit sirfsoc_memc_probe(struct platform_device *op)
+{
+ struct device_node *np = op->dev.of_node;
+
+ sirfsoc_memc_base = of_iomap(np, 0);
+ if (!sirfsoc_memc_base)
+ panic("unable to map memc registers\n");
+
+ return 0;
+}
+
+static struct platform_driver sirfsoc_memc_driver = {
+ .probe = sirfsoc_memc_probe,
+ .driver = {
+ .name = "sirfsoc-memc",
+ .owner = THIS_MODULE,
+ .of_match_table = memc_ids,
+ },
+};
+
+static int __init sirfsoc_memc_init(void)
+{
+ return platform_driver_register(&sirfsoc_memc_driver);
+}
+postcore_initcall(sirfsoc_memc_init);
diff --git a/arch/arm/mach-prima2/pm.h b/arch/arm/mach-prima2/pm.h
new file mode 100644
index 000000000000..bae6d77e01ab
--- /dev/null
+++ b/arch/arm/mach-prima2/pm.h
@@ -0,0 +1,29 @@
+/*
+ * arch/arm/mach-prima2/pm.h
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef _MACH_PRIMA2_PM_H_
+#define _MACH_PRIMA2_PM_H_
+
+#define SIRFSOC_PWR_SLEEPFORCE 0x01
+
+#define SIRFSOC_SLEEP_MODE_MASK 0x3
+#define SIRFSOC_DEEP_SLEEP_MODE 0x1
+
+#define SIRFSOC_PWRC_PDN_CTRL 0x0
+#define SIRFSOC_PWRC_PON_OFF 0x4
+#define SIRFSOC_PWRC_TRIGGER_EN 0x8
+#define SIRFSOC_PWRC_PIN_STATUS 0x14
+#define SIRFSOC_PWRC_SCRATCH_PAD1 0x18
+#define SIRFSOC_PWRC_SCRATCH_PAD2 0x1C
+
+#ifndef __ASSEMBLY__
+extern int sirfsoc_finish_suspend(unsigned long);
+#endif
+
+#endif
+
diff --git a/arch/arm/mach-prima2/rtciobrg.c b/arch/arm/mach-prima2/rtciobrg.c
new file mode 100644
index 000000000000..9d80f1e20a98
--- /dev/null
+++ b/arch/arm/mach-prima2/rtciobrg.c
@@ -0,0 +1,139 @@
+/*
+ * RTC I/O Bridge interfaces for CSR SiRFprimaII
+ * ARM access the registers of SYSRTC, GPSRTC and PWRC through this module
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+
+#define SIRFSOC_CPUIOBRG_CTRL 0x00
+#define SIRFSOC_CPUIOBRG_WRBE 0x04
+#define SIRFSOC_CPUIOBRG_ADDR 0x08
+#define SIRFSOC_CPUIOBRG_DATA 0x0c
+
+/*
+ * suspend asm codes will access this address to make system deepsleep
+ * after DRAM becomes self-refresh
+ */
+void __iomem *sirfsoc_rtciobrg_base;
+static DEFINE_SPINLOCK(rtciobrg_lock);
+
+/*
+ * symbols without lock are only used by suspend asm codes
+ * and these symbols are not exported too
+ */
+void sirfsoc_rtc_iobrg_wait_sync(void)
+{
+ while (readl_relaxed(sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_CTRL))
+ cpu_relax();
+}
+
+void sirfsoc_rtc_iobrg_besyncing(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rtciobrg_lock, flags);
+
+ sirfsoc_rtc_iobrg_wait_sync();
+
+ spin_unlock_irqrestore(&rtciobrg_lock, flags);
+}
+EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_besyncing);
+
+u32 __sirfsoc_rtc_iobrg_readl(u32 addr)
+{
+ sirfsoc_rtc_iobrg_wait_sync();
+
+ writel_relaxed(0x00, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_WRBE);
+ writel_relaxed(addr, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_ADDR);
+ writel_relaxed(0x01, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_CTRL);
+
+ sirfsoc_rtc_iobrg_wait_sync();
+
+ return readl_relaxed(sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_DATA);
+}
+
+u32 sirfsoc_rtc_iobrg_readl(u32 addr)
+{
+ unsigned long flags, val;
+
+ spin_lock_irqsave(&rtciobrg_lock, flags);
+
+ val = __sirfsoc_rtc_iobrg_readl(addr);
+
+ spin_unlock_irqrestore(&rtciobrg_lock, flags);
+
+ return val;
+}
+EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_readl);
+
+void sirfsoc_rtc_iobrg_pre_writel(u32 val, u32 addr)
+{
+ sirfsoc_rtc_iobrg_wait_sync();
+
+ writel_relaxed(0xf1, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_WRBE);
+ writel_relaxed(addr, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_ADDR);
+
+ writel_relaxed(val, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_DATA);
+}
+
+void sirfsoc_rtc_iobrg_writel(u32 val, u32 addr)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rtciobrg_lock, flags);
+
+ sirfsoc_rtc_iobrg_pre_writel(val, addr);
+
+ writel_relaxed(0x01, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_CTRL);
+
+ sirfsoc_rtc_iobrg_wait_sync();
+
+ spin_unlock_irqrestore(&rtciobrg_lock, flags);
+}
+EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_writel);
+
+static const struct of_device_id rtciobrg_ids[] = {
+ { .compatible = "sirf,prima2-rtciobg" },
+ {}
+};
+
+static int __devinit sirfsoc_rtciobrg_probe(struct platform_device *op)
+{
+ struct device_node *np = op->dev.of_node;
+
+ sirfsoc_rtciobrg_base = of_iomap(np, 0);
+ if (!sirfsoc_rtciobrg_base)
+ panic("unable to map rtc iobrg registers\n");
+
+ return 0;
+}
+
+static struct platform_driver sirfsoc_rtciobrg_driver = {
+ .probe = sirfsoc_rtciobrg_probe,
+ .driver = {
+ .name = "sirfsoc-rtciobrg",
+ .owner = THIS_MODULE,
+ .of_match_table = rtciobrg_ids,
+ },
+};
+
+static int __init sirfsoc_rtciobrg_init(void)
+{
+ return platform_driver_register(&sirfsoc_rtciobrg_driver);
+}
+postcore_initcall(sirfsoc_rtciobrg_init);
+
+MODULE_AUTHOR("Zhiwu Song <zhiwu.song@csr.com>, "
+ "Barry Song <baohua.song@csr.com>");
+MODULE_DESCRIPTION("CSR SiRFprimaII rtc io bridge");
+MODULE_LICENSE("GPL");
diff --git a/arch/arm/mach-prima2/sleep.S b/arch/arm/mach-prima2/sleep.S
new file mode 100644
index 000000000000..0745abc365fc
--- /dev/null
+++ b/arch/arm/mach-prima2/sleep.S
@@ -0,0 +1,64 @@
+/*
+ * sleep mode for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/linkage.h>
+#include <asm/ptrace.h>
+#include <asm/assembler.h>
+
+#include "pm.h"
+
+#define DENALI_CTL_22_OFF 0x58
+#define DENALI_CTL_112_OFF 0x1c0
+
+ .text
+
+ENTRY(sirfsoc_finish_suspend)
+ @ r5: mem controller
+ ldr r0, =sirfsoc_memc_base
+ ldr r5, [r0]
+ @ r6: pwrc base offset
+ ldr r0, =sirfsoc_pwrc_base
+ ldr r6, [r0]
+ @ r7: rtc iobrg controller
+ ldr r0, =sirfsoc_rtciobrg_base
+ ldr r7, [r0]
+
+ @ Read the power control register and set the
+ @ sleep force bit.
+ add r0, r6, #SIRFSOC_PWRC_PDN_CTRL
+ bl __sirfsoc_rtc_iobrg_readl
+ orr r0,r0,#SIRFSOC_PWR_SLEEPFORCE
+ add r1, r6, #SIRFSOC_PWRC_PDN_CTRL
+ bl sirfsoc_rtc_iobrg_pre_writel
+ mov r1, #0x1
+
+ @ read the MEM ctl register and set the self
+ @ refresh bit
+
+ ldr r2, [r5, #DENALI_CTL_22_OFF]
+ orr r2, r2, #0x1
+
+ @ Following code has to run from cache since
+ @ the RAM is going to self refresh mode
+ .align 5
+ str r2, [r5, #DENALI_CTL_22_OFF]
+
+1:
+ ldr r4, [r5, #DENALI_CTL_112_OFF]
+ tst r4, #0x1
+ bne 1b
+
+ @ write SLEEPFORCE through rtc iobridge
+
+ str r1, [r7]
+ @ wait rtc io bridge sync
+1:
+ ldr r3, [r7]
+ tst r3, #0x01
+ bne 1b
+ b .
diff --git a/arch/arm/mach-prima2/timer.c b/arch/arm/mach-prima2/timer.c
index 26ab6fee5619..b7a6091ce791 100644
--- a/arch/arm/mach-prima2/timer.c
+++ b/arch/arm/mach-prima2/timer.c
@@ -40,6 +40,17 @@
#define SIRFSOC_TIMER_LATCH_BIT BIT(0)
+#define SIRFSOC_TIMER_REG_CNT 11
+
+static const u32 sirfsoc_timer_reg_list[SIRFSOC_TIMER_REG_CNT] = {
+ SIRFSOC_TIMER_MATCH_0, SIRFSOC_TIMER_MATCH_1, SIRFSOC_TIMER_MATCH_2,
+ SIRFSOC_TIMER_MATCH_3, SIRFSOC_TIMER_MATCH_4, SIRFSOC_TIMER_MATCH_5,
+ SIRFSOC_TIMER_INT_EN, SIRFSOC_TIMER_WATCHDOG_EN, SIRFSOC_TIMER_DIV,
+ SIRFSOC_TIMER_LATCHED_LO, SIRFSOC_TIMER_LATCHED_HI,
+};
+
+static u32 sirfsoc_timer_reg_val[SIRFSOC_TIMER_REG_CNT];
+
static void __iomem *sirfsoc_timer_base;
static void __init sirfsoc_of_timer_map(void);
@@ -106,6 +117,27 @@ static void sirfsoc_timer_set_mode(enum clock_event_mode mode,
}
}
+static void sirfsoc_clocksource_suspend(struct clocksource *cs)
+{
+ int i;
+
+ writel_relaxed(SIRFSOC_TIMER_LATCH_BIT, sirfsoc_timer_base + SIRFSOC_TIMER_LATCH);
+
+ for (i = 0; i < SIRFSOC_TIMER_REG_CNT; i++)
+ sirfsoc_timer_reg_val[i] = readl_relaxed(sirfsoc_timer_base + sirfsoc_timer_reg_list[i]);
+}
+
+static void sirfsoc_clocksource_resume(struct clocksource *cs)
+{
+ int i;
+
+ for (i = 0; i < SIRFSOC_TIMER_REG_CNT; i++)
+ writel_relaxed(sirfsoc_timer_reg_val[i], sirfsoc_timer_base + sirfsoc_timer_reg_list[i]);
+
+ writel_relaxed(sirfsoc_timer_reg_val[i - 2], sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);
+ writel_relaxed(sirfsoc_timer_reg_val[i - 1], sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI);
+}
+
static struct clock_event_device sirfsoc_clockevent = {
.name = "sirfsoc_clockevent",
.rating = 200,
@@ -120,6 +152,8 @@ static struct clocksource sirfsoc_clocksource = {
.mask = CLOCKSOURCE_MASK(64),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
.read = sirfsoc_timer_read,
+ .suspend = sirfsoc_clocksource_suspend,
+ .resume = sirfsoc_clocksource_resume,
};
static struct irqaction sirfsoc_timer_irq = {