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-rw-r--r--drivers/clocksource/exynos_mct.c16
-rw-r--r--drivers/clocksource/hyperv_timer.c3
-rw-r--r--drivers/clocksource/ingenic-sysost.c13
-rw-r--r--drivers/clocksource/sh_cmt.c30
-rw-r--r--drivers/clocksource/timer-fttmr010.c32
-rw-r--r--drivers/clocksource/timer-ixp4xx.c48
-rw-r--r--drivers/clocksource/timer-mediatek.c8
7 files changed, 96 insertions, 54 deletions
diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
index fabad79baafc..5e3e96d3d1b9 100644
--- a/drivers/clocksource/exynos_mct.c
+++ b/drivers/clocksource/exynos_mct.c
@@ -51,6 +51,15 @@
#define TICK_BASE_CNT 1
+#ifdef CONFIG_ARM
+/* Use values higher than ARM arch timer. See 6282edb72bed. */
+#define MCT_CLKSOURCE_RATING 450
+#define MCT_CLKEVENTS_RATING 500
+#else
+#define MCT_CLKSOURCE_RATING 350
+#define MCT_CLKEVENTS_RATING 350
+#endif
+
enum {
MCT_INT_SPI,
MCT_INT_PPI
@@ -206,7 +215,7 @@ static void exynos4_frc_resume(struct clocksource *cs)
static struct clocksource mct_frc = {
.name = "mct-frc",
- .rating = 450, /* use value higher than ARM arch timer */
+ .rating = MCT_CLKSOURCE_RATING,
.read = exynos4_frc_read,
.mask = CLOCKSOURCE_MASK(32),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
@@ -456,8 +465,9 @@ static int exynos4_mct_starting_cpu(unsigned int cpu)
evt->set_state_oneshot = set_state_shutdown;
evt->set_state_oneshot_stopped = set_state_shutdown;
evt->tick_resume = set_state_shutdown;
- evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
- evt->rating = 500; /* use value higher than ARM arch timer */
+ evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT |
+ CLOCK_EVT_FEAT_PERCPU;
+ evt->rating = MCT_CLKEVENTS_RATING,
exynos4_mct_write(TICK_BASE_CNT, mevt->base + MCT_L_TCNTB_OFFSET);
diff --git a/drivers/clocksource/hyperv_timer.c b/drivers/clocksource/hyperv_timer.c
index d6ece7bbce89..ff188ab68496 100644
--- a/drivers/clocksource/hyperv_timer.c
+++ b/drivers/clocksource/hyperv_timer.c
@@ -361,9 +361,6 @@ EXPORT_SYMBOL_GPL(hv_stimer_global_cleanup);
* Hyper-V and 32-bit x86. The TSC reference page version is preferred.
*/
-u64 (*hv_read_reference_counter)(void);
-EXPORT_SYMBOL_GPL(hv_read_reference_counter);
-
static union {
struct ms_hyperv_tsc_page page;
u8 reserved[PAGE_SIZE];
diff --git a/drivers/clocksource/ingenic-sysost.c b/drivers/clocksource/ingenic-sysost.c
index a129840f14f9..cb6fc2f152d4 100644
--- a/drivers/clocksource/ingenic-sysost.c
+++ b/drivers/clocksource/ingenic-sysost.c
@@ -4,6 +4,7 @@
* Copyright (c) 2020 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
*/
+#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
@@ -34,8 +35,6 @@
/* bits within the OSTCCR register */
#define OSTCCR_PRESCALE1_MASK 0x3
#define OSTCCR_PRESCALE2_MASK 0xc
-#define OSTCCR_PRESCALE1_LSB 0
-#define OSTCCR_PRESCALE2_LSB 2
/* bits within the OSTCR register */
#define OSTCR_OST1CLR BIT(0)
@@ -98,7 +97,7 @@ static unsigned long ingenic_ost_percpu_timer_recalc_rate(struct clk_hw *hw,
prescale = readl(ost_clk->ost->base + info->ostccr_reg);
- prescale = (prescale & OSTCCR_PRESCALE1_MASK) >> OSTCCR_PRESCALE1_LSB;
+ prescale = FIELD_GET(OSTCCR_PRESCALE1_MASK, prescale);
return parent_rate >> (prescale * 2);
}
@@ -112,7 +111,7 @@ static unsigned long ingenic_ost_global_timer_recalc_rate(struct clk_hw *hw,
prescale = readl(ost_clk->ost->base + info->ostccr_reg);
- prescale = (prescale & OSTCCR_PRESCALE2_MASK) >> OSTCCR_PRESCALE2_LSB;
+ prescale = FIELD_GET(OSTCCR_PRESCALE2_MASK, prescale);
return parent_rate >> (prescale * 2);
}
@@ -151,7 +150,8 @@ static int ingenic_ost_percpu_timer_set_rate(struct clk_hw *hw, unsigned long re
int val;
val = readl(ost_clk->ost->base + info->ostccr_reg);
- val = (val & ~OSTCCR_PRESCALE1_MASK) | (prescale << OSTCCR_PRESCALE1_LSB);
+ val &= ~OSTCCR_PRESCALE1_MASK;
+ val |= FIELD_PREP(OSTCCR_PRESCALE1_MASK, prescale);
writel(val, ost_clk->ost->base + info->ostccr_reg);
return 0;
@@ -166,7 +166,8 @@ static int ingenic_ost_global_timer_set_rate(struct clk_hw *hw, unsigned long re
int val;
val = readl(ost_clk->ost->base + info->ostccr_reg);
- val = (val & ~OSTCCR_PRESCALE2_MASK) | (prescale << OSTCCR_PRESCALE2_LSB);
+ val &= ~OSTCCR_PRESCALE2_MASK;
+ val |= FIELD_PREP(OSTCCR_PRESCALE2_MASK, prescale);
writel(val, ost_clk->ost->base + info->ostccr_reg);
return 0;
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c
index d7ed99f0001f..dd0956ad969c 100644
--- a/drivers/clocksource/sh_cmt.c
+++ b/drivers/clocksource/sh_cmt.c
@@ -579,7 +579,8 @@ static int sh_cmt_start(struct sh_cmt_channel *ch, unsigned long flag)
ch->flags |= flag;
/* setup timeout if no clockevent */
- if ((flag == FLAG_CLOCKSOURCE) && (!(ch->flags & FLAG_CLOCKEVENT)))
+ if (ch->cmt->num_channels == 1 &&
+ flag == FLAG_CLOCKSOURCE && (!(ch->flags & FLAG_CLOCKEVENT)))
__sh_cmt_set_next(ch, ch->max_match_value);
out:
raw_spin_unlock_irqrestore(&ch->lock, flags);
@@ -621,20 +622,25 @@ static struct sh_cmt_channel *cs_to_sh_cmt(struct clocksource *cs)
static u64 sh_cmt_clocksource_read(struct clocksource *cs)
{
struct sh_cmt_channel *ch = cs_to_sh_cmt(cs);
- unsigned long flags;
u32 has_wrapped;
- u64 value;
- u32 raw;
- raw_spin_lock_irqsave(&ch->lock, flags);
- value = ch->total_cycles;
- raw = sh_cmt_get_counter(ch, &has_wrapped);
+ if (ch->cmt->num_channels == 1) {
+ unsigned long flags;
+ u64 value;
+ u32 raw;
- if (unlikely(has_wrapped))
- raw += ch->match_value + 1;
- raw_spin_unlock_irqrestore(&ch->lock, flags);
+ raw_spin_lock_irqsave(&ch->lock, flags);
+ value = ch->total_cycles;
+ raw = sh_cmt_get_counter(ch, &has_wrapped);
+
+ if (unlikely(has_wrapped))
+ raw += ch->match_value + 1;
+ raw_spin_unlock_irqrestore(&ch->lock, flags);
+
+ return value + raw;
+ }
- return value + raw;
+ return sh_cmt_get_counter(ch, &has_wrapped);
}
static int sh_cmt_clocksource_enable(struct clocksource *cs)
@@ -697,7 +703,7 @@ static int sh_cmt_register_clocksource(struct sh_cmt_channel *ch,
cs->disable = sh_cmt_clocksource_disable;
cs->suspend = sh_cmt_clocksource_suspend;
cs->resume = sh_cmt_clocksource_resume;
- cs->mask = CLOCKSOURCE_MASK(sizeof(u64) * 8);
+ cs->mask = CLOCKSOURCE_MASK(ch->cmt->info->width);
cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
dev_info(&ch->cmt->pdev->dev, "ch%u: used as clock source\n",
diff --git a/drivers/clocksource/timer-fttmr010.c b/drivers/clocksource/timer-fttmr010.c
index edb1d5f193f5..126fb1f259b2 100644
--- a/drivers/clocksource/timer-fttmr010.c
+++ b/drivers/clocksource/timer-fttmr010.c
@@ -271,9 +271,7 @@ static irqreturn_t ast2600_timer_interrupt(int irq, void *dev_id)
}
static int __init fttmr010_common_init(struct device_node *np,
- bool is_aspeed,
- int (*timer_shutdown)(struct clock_event_device *),
- irq_handler_t irq_handler)
+ bool is_aspeed, bool is_ast2600)
{
struct fttmr010 *fttmr010;
int irq;
@@ -374,8 +372,6 @@ static int __init fttmr010_common_init(struct device_node *np,
fttmr010->tick_rate);
}
- fttmr010->timer_shutdown = timer_shutdown;
-
/*
* Setup clockevent timer (interrupt-driven) on timer 1.
*/
@@ -383,8 +379,18 @@ static int __init fttmr010_common_init(struct device_node *np,
writel(0, fttmr010->base + TIMER1_LOAD);
writel(0, fttmr010->base + TIMER1_MATCH1);
writel(0, fttmr010->base + TIMER1_MATCH2);
- ret = request_irq(irq, irq_handler, IRQF_TIMER,
- "FTTMR010-TIMER1", &fttmr010->clkevt);
+
+ if (is_ast2600) {
+ fttmr010->timer_shutdown = ast2600_timer_shutdown;
+ ret = request_irq(irq, ast2600_timer_interrupt,
+ IRQF_TIMER, "FTTMR010-TIMER1",
+ &fttmr010->clkevt);
+ } else {
+ fttmr010->timer_shutdown = fttmr010_timer_shutdown;
+ ret = request_irq(irq, fttmr010_timer_interrupt,
+ IRQF_TIMER, "FTTMR010-TIMER1",
+ &fttmr010->clkevt);
+ }
if (ret) {
pr_err("FTTMR010-TIMER1 no IRQ\n");
goto out_unmap;
@@ -432,23 +438,17 @@ out_disable_clock:
static __init int ast2600_timer_init(struct device_node *np)
{
- return fttmr010_common_init(np, true,
- ast2600_timer_shutdown,
- ast2600_timer_interrupt);
+ return fttmr010_common_init(np, true, true);
}
static __init int aspeed_timer_init(struct device_node *np)
{
- return fttmr010_common_init(np, true,
- fttmr010_timer_shutdown,
- fttmr010_timer_interrupt);
+ return fttmr010_common_init(np, true, false);
}
static __init int fttmr010_timer_init(struct device_node *np)
{
- return fttmr010_common_init(np, false,
- fttmr010_timer_shutdown,
- fttmr010_timer_interrupt);
+ return fttmr010_common_init(np, false, false);
}
TIMER_OF_DECLARE(fttmr010, "faraday,fttmr010", fttmr010_timer_init);
diff --git a/drivers/clocksource/timer-ixp4xx.c b/drivers/clocksource/timer-ixp4xx.c
index 9396745e1c17..cbb184953510 100644
--- a/drivers/clocksource/timer-ixp4xx.c
+++ b/drivers/clocksource/timer-ixp4xx.c
@@ -18,6 +18,7 @@
#include <linux/delay.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include <linux/platform_device.h>
/* Goes away with OF conversion */
#include <linux/platform_data/timer-ixp4xx.h>
@@ -29,9 +30,6 @@
#define IXP4XX_OSRT1_OFFSET 0x08 /* Timer 1 Reload */
#define IXP4XX_OST2_OFFSET 0x0C /* Timer 2 Timestamp */
#define IXP4XX_OSRT2_OFFSET 0x10 /* Timer 2 Reload */
-#define IXP4XX_OSWT_OFFSET 0x14 /* Watchdog Timer */
-#define IXP4XX_OSWE_OFFSET 0x18 /* Watchdog Enable */
-#define IXP4XX_OSWK_OFFSET 0x1C /* Watchdog Key */
#define IXP4XX_OSST_OFFSET 0x20 /* Timer Status */
/*
@@ -45,17 +43,10 @@
#define IXP4XX_OSST_TIMER_1_PEND 0x00000001
#define IXP4XX_OSST_TIMER_2_PEND 0x00000002
#define IXP4XX_OSST_TIMER_TS_PEND 0x00000004
-#define IXP4XX_OSST_TIMER_WDOG_PEND 0x00000008
-#define IXP4XX_OSST_TIMER_WARM_RESET 0x00000010
-
-#define IXP4XX_WDT_KEY 0x0000482E
-#define IXP4XX_WDT_RESET_ENABLE 0x00000001
-#define IXP4XX_WDT_IRQ_ENABLE 0x00000002
-#define IXP4XX_WDT_COUNT_ENABLE 0x00000004
+/* Remaining registers are for the watchdog and defined in the watchdog driver */
struct ixp4xx_timer {
void __iomem *base;
- unsigned int tick_rate;
u32 latch;
struct clock_event_device clkevt;
#ifdef CONFIG_ARM
@@ -181,7 +172,6 @@ static __init int ixp4xx_timer_register(void __iomem *base,
if (!tmr)
return -ENOMEM;
tmr->base = base;
- tmr->tick_rate = timer_freq;
/*
* The timer register doesn't allow to specify the two least
@@ -239,6 +229,40 @@ static __init int ixp4xx_timer_register(void __iomem *base,
return 0;
}
+static struct platform_device ixp4xx_watchdog_device = {
+ .name = "ixp4xx-watchdog",
+ .id = -1,
+};
+
+/*
+ * This probe gets called after the timer is already up and running. The main
+ * function on this platform is to spawn the watchdog device as a child.
+ */
+static int ixp4xx_timer_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+
+ /* Pass the base address as platform data and nothing else */
+ ixp4xx_watchdog_device.dev.platform_data = local_ixp4xx_timer->base;
+ ixp4xx_watchdog_device.dev.parent = dev;
+ return platform_device_register(&ixp4xx_watchdog_device);
+}
+
+static const struct of_device_id ixp4xx_timer_dt_id[] = {
+ { .compatible = "intel,ixp4xx-timer", },
+ { /* sentinel */ },
+};
+
+static struct platform_driver ixp4xx_timer_driver = {
+ .probe = ixp4xx_timer_probe,
+ .driver = {
+ .name = "ixp4xx-timer",
+ .of_match_table = ixp4xx_timer_dt_id,
+ .suppress_bind_attrs = true,
+ },
+};
+builtin_platform_driver(ixp4xx_timer_driver);
+
/**
* ixp4xx_timer_setup() - Timer setup function to be called from boardfiles
* @timerbase: physical base of timer block
diff --git a/drivers/clocksource/timer-mediatek.c b/drivers/clocksource/timer-mediatek.c
index ab63b95e414f..7bcb4a3f26fb 100644
--- a/drivers/clocksource/timer-mediatek.c
+++ b/drivers/clocksource/timer-mediatek.c
@@ -60,9 +60,9 @@
* SYST_CON_EN: Clock enable. Shall be set to
* - Start timer countdown.
* - Allow timeout ticks being updated.
- * - Allow changing interrupt functions.
+ * - Allow changing interrupt status,like clear irq pending.
*
- * SYST_CON_IRQ_EN: Set to allow interrupt.
+ * SYST_CON_IRQ_EN: Set to enable interrupt.
*
* SYST_CON_IRQ_CLR: Set to clear interrupt.
*/
@@ -75,6 +75,7 @@ static void __iomem *gpt_sched_reg __read_mostly;
static void mtk_syst_ack_irq(struct timer_of *to)
{
/* Clear and disable interrupt */
+ writel(SYST_CON_EN, SYST_CON_REG(to));
writel(SYST_CON_IRQ_CLR | SYST_CON_EN, SYST_CON_REG(to));
}
@@ -111,6 +112,9 @@ static int mtk_syst_clkevt_next_event(unsigned long ticks,
static int mtk_syst_clkevt_shutdown(struct clock_event_device *clkevt)
{
+ /* Clear any irq */
+ mtk_syst_ack_irq(to_timer_of(clkevt));
+
/* Disable timer */
writel(0, SYST_CON_REG(to_timer_of(clkevt)));
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-05 10:07:27 +0300