diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-30 18:51:47 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-30 18:51:47 -0700 |
commit | dbb381b619aa5242c9cb1a8fd54d71c4d79c91eb (patch) | |
tree | e2bcd337c4eb7f4f3a44e0f0f05a19e775f18f90 /drivers/clocksource | |
parent | 336622e9fce7a0b8243e1cd9f6e1c24d96f13cd8 (diff) | |
parent | 4479730e9263befbb9ce9563a09563db2acb8f7c (diff) | |
download | linux-dbb381b619aa5242c9cb1a8fd54d71c4d79c91eb.tar.bz2 |
Merge tag 'timers-core-2020-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timekeeping and timer updates from Thomas Gleixner:
"Core:
- Consolidation of the vDSO build infrastructure to address the
difficulties of cross-builds for ARM64 compat vDSO libraries by
restricting the exposure of header content to the vDSO build.
This is achieved by splitting out header content into separate
headers. which contain only the minimaly required information which
is necessary to build the vDSO. These new headers are included from
the kernel headers and the vDSO specific files.
- Enhancements to the generic vDSO library allowing more fine grained
control over the compiled in code, further reducing architecture
specific storage and preparing for adopting the generic library by
PPC.
- Cleanup and consolidation of the exit related code in posix CPU
timers.
- Small cleanups and enhancements here and there
Drivers:
- The obligatory new drivers: Ingenic JZ47xx and X1000 TCU support
- Correct the clock rate of PIT64b global clock
- setup_irq() cleanup
- Preparation for PWM and suspend support for the TI DM timer
- Expand the fttmr010 driver to support ast2600 systems
- The usual small fixes, enhancements and cleanups all over the
place"
* tag 'timers-core-2020-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (80 commits)
Revert "clocksource/drivers/timer-probe: Avoid creating dead devices"
vdso: Fix clocksource.h macro detection
um: Fix header inclusion
arm64: vdso32: Enable Clang Compilation
lib/vdso: Enable common headers
arm: vdso: Enable arm to use common headers
x86/vdso: Enable x86 to use common headers
mips: vdso: Enable mips to use common headers
arm64: vdso32: Include common headers in the vdso library
arm64: vdso: Include common headers in the vdso library
arm64: Introduce asm/vdso/processor.h
arm64: vdso32: Code clean up
linux/elfnote.h: Replace elf.h with UAPI equivalent
scripts: Fix the inclusion order in modpost
common: Introduce processor.h
linux/ktime.h: Extract common header for vDSO
linux/jiffies.h: Extract common header for vDSO
linux/time64.h: Extract common header for vDSO
linux/time32.h: Extract common header for vDSO
linux/time.h: Extract common header for vDSO
...
Diffstat (limited to 'drivers/clocksource')
35 files changed, 476 insertions, 329 deletions
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index cc909e465823..f2142e6bbea3 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -697,6 +697,14 @@ config INGENIC_TIMER help Support for the timer/counter unit of the Ingenic JZ SoCs. +config INGENIC_OST + bool "Clocksource for Ingenic OS Timer" + depends on MIPS || COMPILE_TEST + depends on COMMON_CLK + select MFD_SYSCON + help + Support for the Operating System Timer of the Ingenic JZ SoCs. + config MICROCHIP_PIT64B bool "Microchip PIT64B support" depends on OF || COMPILE_TEST diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index 713686faa549..641ba5383ab5 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -80,6 +80,7 @@ obj-$(CONFIG_ASM9260_TIMER) += asm9260_timer.o obj-$(CONFIG_H8300_TMR8) += h8300_timer8.o obj-$(CONFIG_H8300_TMR16) += h8300_timer16.o obj-$(CONFIG_H8300_TPU) += h8300_tpu.o +obj-$(CONFIG_INGENIC_OST) += ingenic-ost.o obj-$(CONFIG_INGENIC_TIMER) += ingenic-timer.o obj-$(CONFIG_CLKSRC_ST_LPC) += clksrc_st_lpc.o obj-$(CONFIG_X86_NUMACHIP) += numachip.o diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index 9a5464c625b4..d53f4c7ccaae 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -69,7 +69,11 @@ static enum arch_timer_ppi_nr arch_timer_uses_ppi = ARCH_TIMER_VIRT_PPI; static bool arch_timer_c3stop; static bool arch_timer_mem_use_virtual; static bool arch_counter_suspend_stop; -static bool vdso_default = true; +#ifdef CONFIG_GENERIC_GETTIMEOFDAY +static enum vdso_clock_mode vdso_default = VDSO_CLOCKMODE_ARCHTIMER; +#else +static enum vdso_clock_mode vdso_default = VDSO_CLOCKMODE_NONE; +#endif /* CONFIG_GENERIC_GETTIMEOFDAY */ static cpumask_t evtstrm_available = CPU_MASK_NONE; static bool evtstrm_enable = IS_ENABLED(CONFIG_ARM_ARCH_TIMER_EVTSTREAM); @@ -560,8 +564,8 @@ void arch_timer_enable_workaround(const struct arch_timer_erratum_workaround *wa * change both the default value and the vdso itself. */ if (wa->read_cntvct_el0) { - clocksource_counter.archdata.vdso_direct = false; - vdso_default = false; + clocksource_counter.vdso_clock_mode = VDSO_CLOCKMODE_NONE; + vdso_default = VDSO_CLOCKMODE_NONE; } } @@ -979,7 +983,7 @@ static void __init arch_counter_register(unsigned type) } arch_timer_read_counter = rd; - clocksource_counter.archdata.vdso_direct = vdso_default; + clocksource_counter.vdso_clock_mode = vdso_default; } else { arch_timer_read_counter = arch_counter_get_cntvct_mem; } diff --git a/drivers/clocksource/bcm2835_timer.c b/drivers/clocksource/bcm2835_timer.c index b235f446ee50..1592650b2c92 100644 --- a/drivers/clocksource/bcm2835_timer.c +++ b/drivers/clocksource/bcm2835_timer.c @@ -31,7 +31,6 @@ struct bcm2835_timer { void __iomem *compare; int match_mask; struct clock_event_device evt; - struct irqaction act; }; static void __iomem *system_clock __read_mostly; @@ -113,12 +112,9 @@ static int __init bcm2835_timer_init(struct device_node *node) timer->evt.features = CLOCK_EVT_FEAT_ONESHOT; timer->evt.set_next_event = bcm2835_time_set_next_event; timer->evt.cpumask = cpumask_of(0); - timer->act.name = node->name; - timer->act.flags = IRQF_TIMER | IRQF_SHARED; - timer->act.dev_id = timer; - timer->act.handler = bcm2835_time_interrupt; - ret = setup_irq(irq, &timer->act); + ret = request_irq(irq, bcm2835_time_interrupt, IRQF_TIMER | IRQF_SHARED, + node->name, timer); if (ret) { pr_err("Can't set up timer IRQ\n"); goto err_timer_free; diff --git a/drivers/clocksource/bcm_kona_timer.c b/drivers/clocksource/bcm_kona_timer.c index 5c40be9880f5..a50ab5c2154f 100644 --- a/drivers/clocksource/bcm_kona_timer.c +++ b/drivers/clocksource/bcm_kona_timer.c @@ -160,12 +160,6 @@ static irqreturn_t kona_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction kona_timer_irq = { - .name = "Kona Timer Tick", - .flags = IRQF_TIMER, - .handler = kona_timer_interrupt, -}; - static int __init kona_timer_init(struct device_node *node) { u32 freq; @@ -192,7 +186,9 @@ static int __init kona_timer_init(struct device_node *node) kona_timer_disable_and_clear(timers.tmr_regs); kona_timer_clockevents_init(); - setup_irq(timers.tmr_irq, &kona_timer_irq); + if (request_irq(timers.tmr_irq, kona_timer_interrupt, IRQF_TIMER, + "Kona Timer Tick", NULL)) + pr_err("%s: request_irq() failed\n", "Kona Timer Tick"); kona_timer_set_next_event((arch_timer_rate / HZ), NULL); return 0; diff --git a/drivers/clocksource/dw_apb_timer.c b/drivers/clocksource/dw_apb_timer.c index 654766538f93..b207a77b0831 100644 --- a/drivers/clocksource/dw_apb_timer.c +++ b/drivers/clocksource/dw_apb_timer.c @@ -270,15 +270,10 @@ dw_apb_clockevent_init(int cpu, const char *name, unsigned rating, dw_ced->ced.rating = rating; dw_ced->ced.name = name; - dw_ced->irqaction.name = dw_ced->ced.name; - dw_ced->irqaction.handler = dw_apb_clockevent_irq; - dw_ced->irqaction.dev_id = &dw_ced->ced; - dw_ced->irqaction.irq = irq; - dw_ced->irqaction.flags = IRQF_TIMER | IRQF_IRQPOLL | - IRQF_NOBALANCING; - dw_ced->eoi = apbt_eoi; - err = setup_irq(irq, &dw_ced->irqaction); + err = request_irq(irq, dw_apb_clockevent_irq, + IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING, + dw_ced->ced.name, &dw_ced->ced); if (err) { pr_err("failed to request timer irq\n"); kfree(dw_ced); diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index a267fe31ef13..fabad79baafc 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -329,19 +329,15 @@ static irqreturn_t exynos4_mct_comp_isr(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction mct_comp_event_irq = { - .name = "mct_comp_irq", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = exynos4_mct_comp_isr, - .dev_id = &mct_comp_device, -}; - static int exynos4_clockevent_init(void) { mct_comp_device.cpumask = cpumask_of(0); clockevents_config_and_register(&mct_comp_device, clk_rate, 0xf, 0xffffffff); - setup_irq(mct_irqs[MCT_G0_IRQ], &mct_comp_event_irq); + if (request_irq(mct_irqs[MCT_G0_IRQ], exynos4_mct_comp_isr, + IRQF_TIMER | IRQF_IRQPOLL, "mct_comp_irq", + &mct_comp_device)) + pr_err("%s: request_irq() failed\n", "mct_comp_irq"); return 0; } diff --git a/drivers/clocksource/hyperv_timer.c b/drivers/clocksource/hyperv_timer.c index eb0ba7818eb0..09aa44cb8a91 100644 --- a/drivers/clocksource/hyperv_timer.c +++ b/drivers/clocksource/hyperv_timer.c @@ -370,6 +370,12 @@ static void resume_hv_clock_tsc(struct clocksource *arg) hv_set_reference_tsc(tsc_msr); } +static int hv_cs_enable(struct clocksource *cs) +{ + hv_enable_vdso_clocksource(); + return 0; +} + static struct clocksource hyperv_cs_tsc = { .name = "hyperv_clocksource_tsc_page", .rating = 250, @@ -378,6 +384,7 @@ static struct clocksource hyperv_cs_tsc = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, .suspend= suspend_hv_clock_tsc, .resume = resume_hv_clock_tsc, + .enable = hv_cs_enable, }; static u64 notrace read_hv_clock_msr(void) diff --git a/drivers/clocksource/ingenic-ost.c b/drivers/clocksource/ingenic-ost.c new file mode 100644 index 000000000000..029efc2731b4 --- /dev/null +++ b/drivers/clocksource/ingenic-ost.c @@ -0,0 +1,189 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * JZ47xx SoCs TCU Operating System Timer driver + * + * Copyright (C) 2016 Maarten ter Huurne <maarten@treewalker.org> + * Copyright (C) 2020 Paul Cercueil <paul@crapouillou.net> + */ + +#include <linux/clk.h> +#include <linux/clocksource.h> +#include <linux/mfd/ingenic-tcu.h> +#include <linux/mfd/syscon.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/regmap.h> +#include <linux/sched_clock.h> + +#define TCU_OST_TCSR_MASK 0xffc0 +#define TCU_OST_TCSR_CNT_MD BIT(15) + +#define TCU_OST_CHANNEL 15 + +/* + * The TCU_REG_OST_CNT{L,R} from <linux/mfd/ingenic-tcu.h> are only for the + * regmap; these are for use with the __iomem pointer. + */ +#define OST_REG_CNTL 0x4 +#define OST_REG_CNTH 0x8 + +struct ingenic_ost_soc_info { + bool is64bit; +}; + +struct ingenic_ost { + void __iomem *regs; + struct clk *clk; + + struct clocksource cs; +}; + +static struct ingenic_ost *ingenic_ost; + +static u64 notrace ingenic_ost_read_cntl(void) +{ + /* Read using __iomem pointer instead of regmap to avoid locking */ + return readl(ingenic_ost->regs + OST_REG_CNTL); +} + +static u64 notrace ingenic_ost_read_cnth(void) +{ + /* Read using __iomem pointer instead of regmap to avoid locking */ + return readl(ingenic_ost->regs + OST_REG_CNTH); +} + +static u64 notrace ingenic_ost_clocksource_readl(struct clocksource *cs) +{ + return ingenic_ost_read_cntl(); +} + +static u64 notrace ingenic_ost_clocksource_readh(struct clocksource *cs) +{ + return ingenic_ost_read_cnth(); +} + +static int __init ingenic_ost_probe(struct platform_device *pdev) +{ + const struct ingenic_ost_soc_info *soc_info; + struct device *dev = &pdev->dev; + struct ingenic_ost *ost; + struct clocksource *cs; + struct regmap *map; + unsigned long rate; + int err; + + soc_info = device_get_match_data(dev); + if (!soc_info) + return -EINVAL; + + ost = devm_kzalloc(dev, sizeof(*ost), GFP_KERNEL); + if (!ost) + return -ENOMEM; + + ingenic_ost = ost; + + ost->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(ost->regs)) + return PTR_ERR(ost->regs); + + map = device_node_to_regmap(dev->parent->of_node); + if (!map) { + dev_err(dev, "regmap not found"); + return -EINVAL; + } + + ost->clk = devm_clk_get(dev, "ost"); + if (IS_ERR(ost->clk)) + return PTR_ERR(ost->clk); + + err = clk_prepare_enable(ost->clk); + if (err) + return err; + + /* Clear counter high/low registers */ + if (soc_info->is64bit) + regmap_write(map, TCU_REG_OST_CNTL, 0); + regmap_write(map, TCU_REG_OST_CNTH, 0); + + /* Don't reset counter at compare value. */ + regmap_update_bits(map, TCU_REG_OST_TCSR, + TCU_OST_TCSR_MASK, TCU_OST_TCSR_CNT_MD); + + rate = clk_get_rate(ost->clk); + + /* Enable OST TCU channel */ + regmap_write(map, TCU_REG_TESR, BIT(TCU_OST_CHANNEL)); + + cs = &ost->cs; + cs->name = "ingenic-ost"; + cs->rating = 320; + cs->flags = CLOCK_SOURCE_IS_CONTINUOUS; + cs->mask = CLOCKSOURCE_MASK(32); + + if (soc_info->is64bit) + cs->read = ingenic_ost_clocksource_readl; + else + cs->read = ingenic_ost_clocksource_readh; + + err = clocksource_register_hz(cs, rate); + if (err) { + dev_err(dev, "clocksource registration failed"); + clk_disable_unprepare(ost->clk); + return err; + } + + if (soc_info->is64bit) + sched_clock_register(ingenic_ost_read_cntl, 32, rate); + else + sched_clock_register(ingenic_ost_read_cnth, 32, rate); + + return 0; +} + +static int __maybe_unused ingenic_ost_suspend(struct device *dev) +{ + struct ingenic_ost *ost = dev_get_drvdata(dev); + + clk_disable(ost->clk); + + return 0; +} + +static int __maybe_unused ingenic_ost_resume(struct device *dev) +{ + struct ingenic_ost *ost = dev_get_drvdata(dev); + + return clk_enable(ost->clk); +} + +static const struct dev_pm_ops __maybe_unused ingenic_ost_pm_ops = { + /* _noirq: We want the OST clock to be gated last / ungated first */ + .suspend_noirq = ingenic_ost_suspend, + .resume_noirq = ingenic_ost_resume, +}; + +static const struct ingenic_ost_soc_info jz4725b_ost_soc_info = { + .is64bit = false, +}; + +static const struct ingenic_ost_soc_info jz4770_ost_soc_info = { + .is64bit = true, +}; + +static const struct of_device_id ingenic_ost_of_match[] = { + { .compatible = "ingenic,jz4725b-ost", .data = &jz4725b_ost_soc_info, }, + { .compatible = "ingenic,jz4770-ost", .data = &jz4770_ost_soc_info, }, + { } +}; + +static struct platform_driver ingenic_ost_driver = { + .driver = { + .name = "ingenic-ost", +#ifdef CONFIG_PM_SUSPEND + .pm = &ingenic_ost_pm_ops, +#endif + .of_match_table = ingenic_ost_of_match, + }, +}; +builtin_platform_driver_probe(ingenic_ost_driver, ingenic_ost_probe); diff --git a/drivers/clocksource/ingenic-timer.c b/drivers/clocksource/ingenic-timer.c index 4bbdb3d3d0c6..496333650de2 100644 --- a/drivers/clocksource/ingenic-timer.c +++ b/drivers/clocksource/ingenic-timer.c @@ -230,6 +230,7 @@ static const struct of_device_id ingenic_tcu_of_match[] = { { .compatible = "ingenic,jz4740-tcu", .data = &jz4740_soc_info, }, { .compatible = "ingenic,jz4725b-tcu", .data = &jz4725b_soc_info, }, { .compatible = "ingenic,jz4770-tcu", .data = &jz4740_soc_info, }, + { .compatible = "ingenic,x1000-tcu", .data = &jz4740_soc_info, }, { /* sentinel */ } }; @@ -302,7 +303,7 @@ err_free_ingenic_tcu: TIMER_OF_DECLARE(jz4740_tcu_intc, "ingenic,jz4740-tcu", ingenic_tcu_init); TIMER_OF_DECLARE(jz4725b_tcu_intc, "ingenic,jz4725b-tcu", ingenic_tcu_init); TIMER_OF_DECLARE(jz4770_tcu_intc, "ingenic,jz4770-tcu", ingenic_tcu_init); - +TIMER_OF_DECLARE(x1000_tcu_intc, "ingenic,x1000-tcu", ingenic_tcu_init); static int __init ingenic_tcu_probe(struct platform_device *pdev) { diff --git a/drivers/clocksource/mips-gic-timer.c b/drivers/clocksource/mips-gic-timer.c index 37671a5d4ed9..8b5f8ae723cb 100644 --- a/drivers/clocksource/mips-gic-timer.c +++ b/drivers/clocksource/mips-gic-timer.c @@ -155,10 +155,10 @@ static u64 gic_hpt_read(struct clocksource *cs) } static struct clocksource gic_clocksource = { - .name = "GIC", - .read = gic_hpt_read, - .flags = CLOCK_SOURCE_IS_CONTINUOUS, - .archdata = { .vdso_clock_mode = VDSO_CLOCK_GIC }, + .name = "GIC", + .read = gic_hpt_read, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, + .vdso_clock_mode = VDSO_CLOCKMODE_GIC, }; static int __init __gic_clocksource_init(void) diff --git a/drivers/clocksource/mxs_timer.c b/drivers/clocksource/mxs_timer.c index f6ddae30933f..bc96a4cbf26c 100644 --- a/drivers/clocksource/mxs_timer.c +++ b/drivers/clocksource/mxs_timer.c @@ -117,13 +117,6 @@ static irqreturn_t mxs_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction mxs_timer_irq = { - .name = "MXS Timer Tick", - .dev_id = &mxs_clockevent_device, - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = mxs_timer_interrupt, -}; - static void mxs_irq_clear(char *state) { /* Disable interrupt in timer module */ @@ -277,6 +270,7 @@ static int __init mxs_timer_init(struct device_node *np) if (irq <= 0) return -EINVAL; - return setup_irq(irq, &mxs_timer_irq); + return request_irq(irq, mxs_timer_interrupt, IRQF_TIMER | IRQF_IRQPOLL, + "MXS Timer Tick", &mxs_clockevent_device); } TIMER_OF_DECLARE(mxs, "fsl,timrot", mxs_timer_init); diff --git a/drivers/clocksource/nomadik-mtu.c b/drivers/clocksource/nomadik-mtu.c index 3f7fa8c01367..f49a631d8f58 100644 --- a/drivers/clocksource/nomadik-mtu.c +++ b/drivers/clocksource/nomadik-mtu.c @@ -181,13 +181,6 @@ static irqreturn_t nmdk_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction nmdk_timer_irq = { - .name = "Nomadik Timer Tick", - .flags = IRQF_TIMER, - .handler = nmdk_timer_interrupt, - .dev_id = &nmdk_clkevt, -}; - static int __init nmdk_timer_init(void __iomem *base, int irq, struct clk *pclk, struct clk *clk) { @@ -232,7 +225,9 @@ static int __init nmdk_timer_init(void __iomem *base, int irq, sched_clock_register(nomadik_read_sched_clock, 32, rate); /* Timer 1 is used for events, register irq and clockevents */ - setup_irq(irq, &nmdk_timer_irq); + if (request_irq(irq, nmdk_timer_interrupt, IRQF_TIMER, + "Nomadik Timer Tick", &nmdk_clkevt)) + pr_err("%s: request_irq() failed\n", "Nomadik Timer Tick"); nmdk_clkevt.cpumask = cpumask_of(0); nmdk_clkevt.irq = irq; clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU); diff --git a/drivers/clocksource/samsung_pwm_timer.c b/drivers/clocksource/samsung_pwm_timer.c index dae1b2b5a0c5..f760229d0c7f 100644 --- a/drivers/clocksource/samsung_pwm_timer.c +++ b/drivers/clocksource/samsung_pwm_timer.c @@ -256,13 +256,6 @@ static irqreturn_t samsung_clock_event_isr(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction samsung_clock_event_irq = { - .name = "samsung_time_irq", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = samsung_clock_event_isr, - .dev_id = &time_event_device, -}; - static void __init samsung_clockevent_init(void) { unsigned long pclk; @@ -282,7 +275,10 @@ static void __init samsung_clockevent_init(void) clock_rate, 1, pwm.tcnt_max); irq_number = pwm.irq[pwm.event_id]; - setup_irq(irq_number, &samsung_clock_event_irq); + if (request_irq(irq_number, samsung_clock_event_isr, + IRQF_TIMER | IRQF_IRQPOLL, "samsung_time_irq", + &time_event_device)) + pr_err("%s: request_irq() failed\n", "samsung_time_irq"); if (pwm.variant.has_tint_cstat) { u32 mask = (1 << pwm.event_id); diff --git a/drivers/clocksource/timer-atlas7.c b/drivers/clocksource/timer-atlas7.c index 93c3ac6d72bd..c21c91c2bc56 100644 --- a/drivers/clocksource/timer-atlas7.c +++ b/drivers/clocksource/timer-atlas7.c @@ -159,29 +159,23 @@ static struct clocksource sirfsoc_clocksource = { .resume = sirfsoc_clocksource_resume, }; -static struct irqaction sirfsoc_timer_irq = { - .name = "sirfsoc_timer0", - .flags = IRQF_TIMER | IRQF_NOBALANCING, - .handler = sirfsoc_timer_interrupt, -}; - -static struct irqaction sirfsoc_timer1_irq = { - .name = "sirfsoc_timer1", - .flags = IRQF_TIMER | IRQF_NOBALANCING, - .handler = sirfsoc_timer_interrupt, -}; +static unsigned int sirfsoc_timer_irq, sirfsoc_timer1_irq; static int sirfsoc_local_timer_starting_cpu(unsigned int cpu) { struct clock_event_device *ce = per_cpu_ptr(sirfsoc_clockevent, cpu); - struct irqaction *action; - - if (cpu == 0) - action = &sirfsoc_timer_irq; - else - action = &sirfsoc_timer1_irq; + unsigned int irq; + const char *name; + + if (cpu == 0) { + irq = sirfsoc_timer_irq; + name = "sirfsoc_timer0"; + } else { + irq = sirfsoc_timer1_irq; + name = "sirfsoc_timer1"; + } - ce->irq = action->irq; + ce->irq = irq; ce->name = "local_timer"; ce->features = CLOCK_EVT_FEAT_ONESHOT; ce->rating = 200; @@ -196,9 +190,9 @@ static int sirfsoc_local_timer_starting_cpu(unsigned int cpu) ce->min_delta_ticks = 2; ce->cpumask = cpumask_of(cpu); - action->dev_id = ce; - BUG_ON(setup_irq(ce->irq, action)); - irq_force_affinity(action->irq, cpumask_of(cpu)); + BUG_ON(request_irq(ce->irq, sirfsoc_timer_interrupt, + IRQF_TIMER | IRQF_NOBALANCING, name, ce)); + irq_force_affinity(ce->irq, cpumask_of(cpu)); clockevents_register_device(ce); return 0; @@ -206,12 +200,14 @@ static int sirfsoc_local_timer_starting_cpu(unsigned int cpu) static int sirfsoc_local_timer_dying_cpu(unsigned int cpu) { + struct clock_event_device *ce = per_cpu_ptr(sirfsoc_clockevent, cpu); + sirfsoc_timer_count_disable(1); if (cpu == 0) - remove_irq(sirfsoc_timer_irq.irq, &sirfsoc_timer_irq); + free_irq(sirfsoc_timer_irq, ce); else - remove_irq(sirfsoc_timer1_irq.irq, &sirfsoc_timer1_irq); + free_irq(sirfsoc_timer1_irq, ce); return 0; } @@ -268,14 +264,14 @@ static int __init sirfsoc_of_timer_init(struct device_node *np) return -ENXIO; } - sirfsoc_timer_irq.irq = irq_of_parse_and_map(np, 0); - if (!sirfsoc_timer_irq.irq) { + sirfsoc_timer_irq = irq_of_parse_and_map(np, 0); + if (!sirfsoc_timer_irq) { pr_err("No irq passed for timer0 via DT\n"); return -EINVAL; } - sirfsoc_timer1_irq.irq = irq_of_parse_and_map(np, 1); - if (!sirfsoc_timer1_irq.irq) { + sirfsoc_timer1_irq = irq_of_parse_and_map(np, 1); + if (!sirfsoc_timer1_irq) { pr_err("No irq passed for timer1 via DT\n"); return -EINVAL; } diff --git a/drivers/clocksource/timer-cs5535.c b/drivers/clocksource/timer-cs5535.c index 8f6bc536bef2..d47acfe848ae 100644 --- a/drivers/clocksource/timer-cs5535.c +++ b/drivers/clocksource/timer-cs5535.c @@ -131,14 +131,9 @@ static irqreturn_t mfgpt_tick(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction mfgptirq = { - .handler = mfgpt_tick, - .flags = IRQF_NOBALANCING | IRQF_TIMER | IRQF_SHARED, - .name = DRV_NAME, -}; - static int __init cs5535_mfgpt_init(void) { + unsigned long flags = IRQF_NOBALANCING | IRQF_TIMER | IRQF_SHARED; struct cs5535_mfgpt_timer *timer; int ret; uint16_t val; @@ -158,7 +153,7 @@ static int __init cs5535_mfgpt_init(void) } /* And register it with the kernel */ - ret = setup_irq(timer_irq, &mfgptirq); + ret = request_irq(timer_irq, mfgpt_tick, flags, DRV_NAME, timer); if (ret) { printk(KERN_ERR DRV_NAME ": Unable to set up the interrupt.\n"); goto err_irq; diff --git a/drivers/clocksource/timer-efm32.c b/drivers/clocksource/timer-efm32.c index 5a22cb079ad3..441a4b916841 100644 --- a/drivers/clocksource/timer-efm32.c +++ b/drivers/clocksource/timer-efm32.c @@ -119,13 +119,6 @@ static struct efm32_clock_event_ddata clock_event_ddata = { }, }; -static struct irqaction efm32_clock_event_irq = { - .name = "efm32 clockevent", - .flags = IRQF_TIMER, - .handler = efm32_clock_event_handler, - .dev_id = &clock_event_ddata, -}; - static int __init efm32_clocksource_init(struct device_node *np) { struct clk *clk; @@ -230,7 +223,8 @@ static int __init efm32_clockevent_init(struct device_node *np) DIV_ROUND_CLOSEST(rate, 1024), 0xf, 0xffff); - ret = setup_irq(irq, &efm32_clock_event_irq); + ret = request_irq(irq, efm32_clock_event_handler, IRQF_TIMER, + "efm32 clockevent", &clock_event_ddata); if (ret) { pr_err("Failed setup irq\n"); goto err_setup_irq; diff --git a/drivers/clocksource/timer-fsl-ftm.c b/drivers/clocksource/timer-fsl-ftm.c index a9d9a3ca5996..12a2ed7cfaff 100644 --- a/drivers/clocksource/timer-fsl-ftm.c +++ b/drivers/clocksource/timer-fsl-ftm.c @@ -176,13 +176,6 @@ static struct clock_event_device ftm_clockevent = { .rating = 300, }; -static struct irqaction ftm_timer_irq = { - .name = "Freescale ftm timer", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = ftm_evt_interrupt, - .dev_id = &ftm_clockevent, -}; - static int __init ftm_clockevent_init(unsigned long freq, int irq) { int err; @@ -192,7 +185,8 @@ static int __init ftm_clockevent_init(unsigned long freq, int irq) ftm_reset_counter(priv->clkevt_base); - err = setup_irq(irq, &ftm_timer_irq); + err = request_irq(irq, ftm_evt_interrupt, IRQF_TIMER | IRQF_IRQPOLL, + "Freescale ftm timer", &ftm_clockevent); if (err) { pr_err("ftm: setup irq failed: %d\n", err); return err; diff --git a/drivers/clocksource/timer-fttmr010.c b/drivers/clocksource/timer-fttmr010.c index fadff7915dd9..edb1d5f193f5 100644 --- a/drivers/clocksource/timer-fttmr010.c +++ b/drivers/clocksource/timer-fttmr010.c @@ -38,6 +38,11 @@ #define TIMER_CR (0x30) /* + * Control register set to clear for ast2600 only. + */ +#define AST2600_TIMER_CR_CLR (0x3c) + +/* * Control register (TMC30) bit fields for fttmr010/gemini/moxart timers. */ #define TIMER_1_CR_ENABLE BIT(0) @@ -97,6 +102,7 @@ struct fttmr010 { bool is_aspeed; u32 t1_enable_val; struct clock_event_device clkevt; + int (*timer_shutdown)(struct clock_event_device *evt); #ifdef CONFIG_ARM struct delay_timer delay_timer; #endif @@ -140,9 +146,7 @@ static int fttmr010_timer_set_next_event(unsigned long cycles, u32 cr; /* Stop */ - cr = readl(fttmr010->base + TIMER_CR); - cr &= ~fttmr010->t1_enable_val; - writel(cr, fttmr010->base + TIMER_CR); + fttmr010->timer_shutdown(evt); if (fttmr010->is_aspeed) { /* @@ -164,6 +168,16 @@ static int fttmr010_timer_set_next_event(unsigned long cycles, return 0; } +static int ast2600_timer_shutdown(struct clock_event_device *evt) +{ + struct fttmr010 *fttmr010 = to_fttmr010(evt); + + /* Stop */ + writel(fttmr010->t1_enable_val, fttmr010->base + AST2600_TIMER_CR_CLR); + + return 0; +} + static int fttmr010_timer_shutdown(struct clock_event_device *evt) { struct fttmr010 *fttmr010 = to_fttmr010(evt); @@ -183,9 +197,7 @@ static int fttmr010_timer_set_oneshot(struct clock_event_device *evt) u32 cr; /* Stop */ - cr = readl(fttmr010->base + TIMER_CR); - cr &= ~fttmr010->t1_enable_val; - writel(cr, fttmr010->base + TIMER_CR); + fttmr010->timer_shutdown(evt); /* Setup counter start from 0 or ~0 */ writel(0, fttmr010->base + TIMER1_COUNT); @@ -211,9 +223,7 @@ static int fttmr010_timer_set_periodic(struct clock_event_device *evt) u32 cr; /* Stop */ - cr = readl(fttmr010->base + TIMER_CR); - cr &= ~fttmr010->t1_enable_val; - writel(cr, fttmr010->base + TIMER_CR); + fttmr010->timer_shutdown(evt); /* Setup timer to fire at 1/HZ intervals. */ if (fttmr010->is_aspeed) { @@ -249,7 +259,21 @@ static irqreturn_t fttmr010_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed) +static irqreturn_t ast2600_timer_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *evt = dev_id; + struct fttmr010 *fttmr010 = to_fttmr010(evt); + + writel(0x1, fttmr010->base + TIMER_INTR_STATE); + + evt->event_handler(evt); + return IRQ_HANDLED; +} + +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) { struct fttmr010 *fttmr010; int irq; @@ -350,6 +374,8 @@ static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed) fttmr010->tick_rate); } + fttmr010->timer_shutdown = timer_shutdown; + /* * Setup clockevent timer (interrupt-driven) on timer 1. */ @@ -357,7 +383,7 @@ static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed) writel(0, fttmr010->base + TIMER1_LOAD); writel(0, fttmr010->base + TIMER1_MATCH1); writel(0, fttmr010->base + TIMER1_MATCH2); - ret = request_irq(irq, fttmr010_timer_interrupt, IRQF_TIMER, + ret = request_irq(irq, irq_handler, IRQF_TIMER, "FTTMR010-TIMER1", &fttmr010->clkevt); if (ret) { pr_err("FTTMR010-TIMER1 no IRQ\n"); @@ -370,10 +396,10 @@ static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed) fttmr010->clkevt.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; fttmr010->clkevt.set_next_event = fttmr010_timer_set_next_event; - fttmr010->clkevt.set_state_shutdown = fttmr010_timer_shutdown; + fttmr010->clkevt.set_state_shutdown = fttmr010->timer_shutdown; fttmr010->clkevt.set_state_periodic = fttmr010_timer_set_periodic; fttmr010->clkevt.set_state_oneshot = fttmr010_timer_set_oneshot; - fttmr010->clkevt.tick_resume = fttmr010_timer_shutdown; + fttmr010->clkevt.tick_resume = fttmr010->timer_shutdown; fttmr010->clkevt.cpumask = cpumask_of(0); fttmr010->clkevt.irq = irq; clockevents_config_and_register(&fttmr010->clkevt, @@ -404,14 +430,25 @@ out_disable_clock: return ret; } +static __init int ast2600_timer_init(struct device_node *np) +{ + return fttmr010_common_init(np, true, + ast2600_timer_shutdown, + ast2600_timer_interrupt); +} + static __init int aspeed_timer_init(struct device_node *np) { - return fttmr010_common_init(np, true); + return fttmr010_common_init(np, true, + fttmr010_timer_shutdown, + fttmr010_timer_interrupt); } static __init int fttmr010_timer_init(struct device_node *np) { - return fttmr010_common_init(np, false); + return fttmr010_common_init(np, false, + fttmr010_timer_shutdown, + fttmr010_timer_interrupt); } TIMER_OF_DECLARE(fttmr010, "faraday,fttmr010", fttmr010_timer_init); @@ -419,3 +456,4 @@ TIMER_OF_DECLARE(gemini, "cortina,gemini-timer", fttmr010_timer_init); TIMER_OF_DECLARE(moxart, "moxa,moxart-timer", fttmr010_timer_init); TIMER_OF_DECLARE(ast2400, "aspeed,ast2400-timer", aspeed_timer_init); TIMER_OF_DECLARE(ast2500, "aspeed,ast2500-timer", aspeed_timer_init); +TIMER_OF_DECLARE(ast2600, "aspeed,ast2600-timer", ast2600_timer_init); diff --git a/drivers/clocksource/timer-imx-gpt.c b/drivers/clocksource/timer-imx-gpt.c index 706c0d0ff56c..7b2c70f2f353 100644 --- a/drivers/clocksource/timer-imx-gpt.c +++ b/drivers/clocksource/timer-imx-gpt.c @@ -67,7 +67,6 @@ struct imx_timer { struct clk *clk_ipg; const struct imx_gpt_data *gpt; struct clock_event_device ced; - struct irqaction act; }; struct imx_gpt_data { @@ -273,7 +272,6 @@ static irqreturn_t mxc_timer_interrupt(int irq, void *dev_id) static int __init mxc_clockevent_init(struct imx_timer *imxtm) { struct clock_event_device *ced = &imxtm->ced; - struct irqaction *act = &imxtm->act; ced->name = "mxc_timer1"; ced->features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_DYNIRQ; @@ -287,12 +285,8 @@ static int __init mxc_clockevent_init(struct imx_timer *imxtm) clockevents_config_and_register(ced, clk_get_rate(imxtm->clk_per), 0xff, 0xfffffffe); - act->name = "i.MX Timer Tick"; - act->flags = IRQF_TIMER | IRQF_IRQPOLL; - act->handler = mxc_timer_interrupt; - act->dev_id = ced; - - return setup_irq(imxtm->irq, act); + return request_irq(imxtm->irq, mxc_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, "i.MX Timer Tick", ced); } static void imx1_gpt_setup_tctl(struct imx_timer *imxtm) diff --git a/drivers/clocksource/timer-imx-sysctr.c b/drivers/clocksource/timer-imx-sysctr.c index b7c80a368a1b..18b90fc56bfc 100644 --- a/drivers/clocksource/timer-imx-sysctr.c +++ b/drivers/clocksource/timer-imx-sysctr.c @@ -4,8 +4,6 @@ #include <linux/interrupt.h> #include <linux/clockchips.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> #include "timer-of.h" diff --git a/drivers/clocksource/timer-imx-tpm.c b/drivers/clocksource/timer-imx-tpm.c index c1d52d5264c2..6334a35fdc2f 100644 --- a/drivers/clocksource/timer-imx-tpm.c +++ b/drivers/clocksource/timer-imx-tpm.c @@ -8,8 +8,6 @@ #include <linux/clocksource.h> #include <linux/delay.h> #include <linux/interrupt.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> #include <linux/sched_clock.h> #include "timer-of.h" diff --git a/drivers/clocksource/timer-integrator-ap.c b/drivers/clocksource/timer-integrator-ap.c index c90a69c7b5fa..b0fcbaac58b0 100644 --- a/drivers/clocksource/timer-integrator-ap.c +++ b/drivers/clocksource/timer-integrator-ap.c @@ -123,13 +123,6 @@ static struct clock_event_device integrator_clockevent = { .rating = 300, }; -static struct irqaction integrator_timer_irq = { - .name = "timer", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = integrator_timer_interrupt, - .dev_id = &integrator_clockevent, -}; - static int integrator_clockevent_init(unsigned long inrate, void __iomem *base, int irq) { @@ -149,7 +142,9 @@ static int integrator_clockevent_init(unsigned long inrate, timer_reload = rate / HZ; writel(ctrl, clkevt_base + TIMER_CTRL); - ret = setup_irq(irq, &integrator_timer_irq); + ret = request_irq(irq, integrator_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, "timer", + &integrator_clockevent); if (ret) return ret; diff --git a/drivers/clocksource/timer-meson6.c b/drivers/clocksource/timer-meson6.c index 9e8b467c71da..99f5510a2b56 100644 --- a/drivers/clocksource/timer-meson6.c +++ b/drivers/clocksource/timer-meson6.c @@ -150,13 +150,6 @@ static irqreturn_t meson6_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction meson6_timer_irq = { - .name = "meson6_timer", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = meson6_timer_interrupt, - .dev_id = &meson6_clockevent, -}; - static int __init meson6_timer_init(struct device_node *node) { u32 val; @@ -194,7 +187,9 @@ static int __init meson6_timer_init(struct device_node *node) /* Stop the timer A */ meson6_clkevt_time_stop(); - ret = setup_irq(irq, &meson6_timer_irq); + ret = request_irq(irq, meson6_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, "meson6_timer", + &meson6_clockevent); if (ret) { pr_warn("failed to setup irq %d\n", irq); return ret; diff --git a/drivers/clocksource/timer-microchip-pit64b.c b/drivers/clocksource/timer-microchip-pit64b.c index bd63d3484838..59e11ca8ee73 100644 --- a/drivers/clocksource/timer-microchip-pit64b.c +++ b/drivers/clocksource/timer-microchip-pit64b.c @@ -264,6 +264,7 @@ static int __init mchp_pit64b_init_mode(struct mchp_pit64b_timer *timer, if (!best_diff) { timer->mode |= MCHP_PIT64B_MR_SGCLK; + clk_set_rate(timer->gclk, gclk_round); goto done; } diff --git a/drivers/clocksource/timer-orion.c b/drivers/clocksource/timer-orion.c index 7d487107e3cd..d01ff4181867 100644 --- a/drivers/clocksource/timer-orion.c +++ b/drivers/clocksource/timer-orion.c @@ -114,12 +114,6 @@ static irqreturn_t orion_clkevt_irq_handler(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction orion_clkevt_irq = { - .name = "orion_event", - .flags = IRQF_TIMER, - .handler = orion_clkevt_irq_handler, -}; - static int __init orion_timer_init(struct device_node *np) { unsigned long rate; @@ -172,7 +166,8 @@ static int __init orion_timer_init(struct device_node *np) sched_clock_register(orion_read_sched_clock, 32, rate); /* setup timer1 as clockevent timer */ - ret = setup_irq(irq, &orion_clkevt_irq); + ret = request_irq(irq, orion_clkevt_irq_handler, IRQF_TIMER, + "orion_event", NULL); if (ret) { pr_err("%pOFn: unable to setup irq\n", np); return ret; diff --git a/drivers/clocksource/timer-owl.c b/drivers/clocksource/timer-owl.c index 900fe736145d..ac97420bfa7c 100644 --- a/drivers/clocksource/timer-owl.c +++ b/drivers/clocksource/timer-owl.c @@ -135,8 +135,11 @@ static int __init owl_timer_init(struct device_node *node) } clk = of_clk_get(node, 0); - if (IS_ERR(clk)) - return PTR_ERR(clk); + if (IS_ERR(clk)) { + ret = PTR_ERR(clk); + pr_err("Failed to get clock for clocksource (%d)\n", ret); + return ret; + } rate = clk_get_rate(clk); @@ -144,8 +147,12 @@ static int __init owl_timer_init(struct device_node *node) owl_timer_set_enabled(owl_clksrc_base, true); sched_clock_register(owl_timer_sched_read, 32, rate); - clocksource_mmio_init(owl_clksrc_base + OWL_Tx_VAL, node->name, - rate, 200, 32, clocksource_mmio_readl_up); + ret = clocksource_mmio_init(owl_clksrc_base + OWL_Tx_VAL, node->name, + rate, 200, 32, clocksource_mmio_readl_up); + if (ret) { + pr_err("Failed to register clocksource (%d)\n", ret); + return ret; + } owl_timer_reset(owl_clkevt_base); diff --git a/drivers/clocksource/timer-prima2.c b/drivers/clocksource/timer-prima2.c index d4a9dcf5fba2..c5d469342a9d 100644 --- a/drivers/clocksource/timer-prima2.c +++ b/drivers/clocksource/timer-prima2.c @@ -165,14 +165,6 @@ static struct clocksource sirfsoc_clocksource = { .resume = sirfsoc_clocksource_resume, }; -static struct irqaction sirfsoc_timer_irq = { - .name = "sirfsoc_timer0", - .flags = IRQF_TIMER, - .irq = 0, - .handler = sirfsoc_timer_interrupt, - .dev_id = &sirfsoc_clockevent, -}; - /* Overwrite weak default sched_clock with more precise one */ static u64 notrace sirfsoc_read_sched_clock(void) { @@ -190,6 +182,7 @@ static void __init sirfsoc_clockevent_init(void) static int __init sirfsoc_prima2_timer_init(struct device_node *np) { unsigned long rate; + unsigned int irq; struct clk *clk; int ret; @@ -218,7 +211,7 @@ static int __init sirfsoc_prima2_timer_init(struct device_node *np) return -ENXIO; } - sirfsoc_timer_irq.irq = irq_of_parse_and_map(np, 0); + irq = irq_of_parse_and_map(np, 0); writel_relaxed(rate / PRIMA2_CLOCK_FREQ / 2 - 1, sirfsoc_timer_base + SIRFSOC_TIMER_DIV); @@ -234,7 +227,8 @@ static int __init sirfsoc_prima2_timer_init(struct device_node *np) sched_clock_register(sirfsoc_read_sched_clock, 64, PRIMA2_CLOCK_FREQ); - ret = setup_irq(sirfsoc_timer_irq.irq, &sirfsoc_timer_irq); + ret = request_irq(irq, sirfsoc_timer_interrupt, IRQF_TIMER, + "sirfsoc_timer0", &sirfsoc_clockevent); if (ret) { pr_err("Failed to setup irq\n"); return ret; diff --git a/drivers/clocksource/timer-pxa.c b/drivers/clocksource/timer-pxa.c index 913a5d354a1f..7ad0e5adb2ff 100644 --- a/drivers/clocksource/timer-pxa.c +++ b/drivers/clocksource/timer-pxa.c @@ -143,13 +143,6 @@ static struct clock_event_device ckevt_pxa_osmr0 = { .resume = pxa_timer_resume, }; -static struct irqaction pxa_ost0_irq = { - .name = "ost0", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = pxa_ost0_interrupt, - .dev_id = &ckevt_pxa_osmr0, -}; - static int __init pxa_timer_common_init(int irq, unsigned long clock_tick_rate) { int ret; @@ -161,7 +154,8 @@ static int __init pxa_timer_common_init(int irq, unsigned long clock_tick_rate) ckevt_pxa_osmr0.cpumask = cpumask_of(0); - ret = setup_irq(irq, &pxa_ost0_irq); + ret = request_irq(irq, pxa_ost0_interrupt, IRQF_TIMER | IRQF_IRQPOLL, + "ost0", &ckevt_pxa_osmr0); if (ret) { pr_err("Failed to setup irq\n"); return ret; diff --git a/drivers/clocksource/timer-sp804.c b/drivers/clocksource/timer-sp804.c index 9c841980eed1..5cd0abf9b396 100644 --- a/drivers/clocksource/timer-sp804.c +++ b/drivers/clocksource/timer-sp804.c @@ -168,13 +168,6 @@ static struct clock_event_device sp804_clockevent = { .rating = 300, }; -static struct irqaction sp804_timer_irq = { - .name = "timer", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = sp804_timer_interrupt, - .dev_id = &sp804_clockevent, -}; - int __init __sp804_clockevents_init(void __iomem *base, unsigned int irq, struct clk *clk, const char *name) { struct clock_event_device *evt = &sp804_clockevent; @@ -200,7 +193,9 @@ int __init __sp804_clockevents_init(void __iomem *base, unsigned int irq, struct writel(0, base + TIMER_CTRL); - setup_irq(irq, &sp804_timer_irq); + if (request_irq(irq, sp804_timer_interrupt, IRQF_TIMER | IRQF_IRQPOLL, + "timer", &sp804_clockevent)) + pr_err("%s: request_irq() failed\n", "timer"); clockevents_config_and_register(evt, rate, 0xf, 0xffffffff); return 0; diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c index 269a994d6a99..2531eab3d6d7 100644 --- a/drivers/clocksource/timer-ti-dm.c +++ b/drivers/clocksource/timer-ti-dm.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * linux/arch/arm/plat-omap/dmtimer.c * @@ -15,28 +16,11 @@ * * Copyright (C) 2009 Texas Instruments * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com> - * - * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * 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., - * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/clk.h> #include <linux/clk-provider.h> +#include <linux/cpu_pm.h> #include <linux/module.h> #include <linux/io.h> #include <linux/device.h> @@ -109,6 +93,47 @@ static void omap_timer_restore_context(struct omap_dm_timer *timer) timer->context.tclr); } +static void omap_timer_save_context(struct omap_dm_timer *timer) +{ + timer->context.tclr = + omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); + timer->context.twer = + omap_dm_timer_read_reg(timer, OMAP_TIMER_WAKEUP_EN_REG); + timer->context.tldr = + omap_dm_timer_read_reg(timer, OMAP_TIMER_LOAD_REG); + timer->context.tmar = + omap_dm_timer_read_reg(timer, OMAP_TIMER_MATCH_REG); + timer->context.tier = readl_relaxed(timer->irq_ena); + timer->context.tsicr = + omap_dm_timer_read_reg(timer, OMAP_TIMER_IF_CTRL_REG); +} + +static int omap_timer_context_notifier(struct notifier_block *nb, + unsigned long cmd, void *v) +{ + struct omap_dm_timer *timer; + + timer = container_of(nb, struct omap_dm_timer, nb); + + switch (cmd) { + case CPU_CLUSTER_PM_ENTER: + if ((timer->capability & OMAP_TIMER_ALWON) || + !atomic_read(&timer->enabled)) + break; + omap_timer_save_context(timer); + break; + case CPU_CLUSTER_PM_ENTER_FAILED: + case CPU_CLUSTER_PM_EXIT: + if ((timer->capability & OMAP_TIMER_ALWON) || + !atomic_read(&timer->enabled)) + break; + omap_timer_restore_context(timer); + break; + } + + return NOTIFY_OK; +} + static int omap_dm_timer_reset(struct omap_dm_timer *timer) { u32 l, timeout = 100000; @@ -138,35 +163,6 @@ static int omap_dm_timer_reset(struct omap_dm_timer *timer) return 0; } -static int omap_dm_timer_of_set_source(struct omap_dm_timer *timer) -{ - int ret; - struct clk *parent; - - /* - * FIXME: OMAP1 devices do not use the clock framework for dmtimers so - * do not call clk_get() for these devices. - */ - if (!timer->fclk) - return -ENODEV; - - parent = clk_get(&timer->pdev->dev, NULL); - if (IS_ERR(parent)) - return -ENODEV; - - /* Bail out if both clocks point to fck */ - if (clk_is_match(parent, timer->fclk)) - return 0; - - ret = clk_set_parent(timer->fclk, parent); - if (ret < 0) - pr_err("%s: failed to set parent\n", __func__); - - clk_put(parent); - - return ret; -} - static int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source) { int ret; @@ -225,21 +221,7 @@ static int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source) static void omap_dm_timer_enable(struct omap_dm_timer *timer) { - int c; - pm_runtime_get_sync(&timer->pdev->dev); - - if (!(timer->capability & OMAP_TIMER_ALWON)) { - if (timer->get_context_loss_count) { - c = timer->get_context_loss_count(&timer->pdev->dev); - if (c != timer->ctx_loss_count) { - omap_timer_restore_context(timer); - timer->ctx_loss_count = c; - } - } else { - omap_timer_restore_context(timer); - } - } } static void omap_dm_timer_disable(struct omap_dm_timer *timer) @@ -276,9 +258,7 @@ static int omap_dm_timer_prepare(struct omap_dm_timer *timer) __omap_dm_timer_enable_posted(timer); omap_dm_timer_disable(timer); - rc = omap_dm_timer_of_set_source(timer); - if (rc == -ENODEV) - return omap_dm_timer_set_source(timer, OMAP_TIMER_SRC_32_KHZ); + rc = omap_dm_timer_set_source(timer, OMAP_TIMER_SRC_32_KHZ); return rc; } @@ -508,7 +488,7 @@ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask) int omap_dm_timer_trigger(struct omap_dm_timer *timer) { - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) { + if (unlikely(!timer || !atomic_read(&timer->enabled))) { pr_err("%s: timer not available or enabled.\n", __func__); return -EINVAL; } @@ -532,8 +512,6 @@ static int omap_dm_timer_start(struct omap_dm_timer *timer) omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l); } - /* Save the context */ - timer->context.tclr = l; return 0; } @@ -549,38 +527,19 @@ static int omap_dm_timer_stop(struct omap_dm_timer *timer) __omap_dm_timer_stop(timer, timer->posted, rate); - /* - * Since the register values are computed and written within - * __omap_dm_timer_stop, we need to use read to retrieve the - * context. - */ - timer->context.tclr = - omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); omap_dm_timer_disable(timer); return 0; } -static int omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload, +static int omap_dm_timer_set_load(struct omap_dm_timer *timer, unsigned int load) { - u32 l; - if (unlikely(!timer)) return -EINVAL; omap_dm_timer_enable(timer); - l = omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); - if (autoreload) - l |= OMAP_TIMER_CTRL_AR; - else - l &= ~OMAP_TIMER_CTRL_AR; - omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l); omap_dm_timer_write_reg(timer, OMAP_TIMER_LOAD_REG, load); - omap_dm_timer_write_reg(timer, OMAP_TIMER_TRIGGER_REG, 0); - /* Save the context */ - timer->context.tclr = l; - timer->context.tldr = load; omap_dm_timer_disable(timer); return 0; } @@ -602,15 +561,12 @@ static int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, omap_dm_timer_write_reg(timer, OMAP_TIMER_MATCH_REG, match); omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l); - /* Save the context */ - timer->context.tclr = l; - timer->context.tmar = match; omap_dm_timer_disable(timer); return 0; } static int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, - int toggle, int trigger) + int toggle, int trigger, int autoreload) { u32 l; @@ -620,20 +576,34 @@ static int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, omap_dm_timer_enable(timer); l = omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); l &= ~(OMAP_TIMER_CTRL_GPOCFG | OMAP_TIMER_CTRL_SCPWM | - OMAP_TIMER_CTRL_PT | (0x03 << 10)); + OMAP_TIMER_CTRL_PT | (0x03 << 10) | OMAP_TIMER_CTRL_AR); if (def_on) l |= OMAP_TIMER_CTRL_SCPWM; if (toggle) l |= OMAP_TIMER_CTRL_PT; l |= trigger << 10; + if (autoreload) + l |= OMAP_TIMER_CTRL_AR; omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l); - /* Save the context */ - timer->context.tclr = l; omap_dm_timer_disable(timer); return 0; } +static int omap_dm_timer_get_pwm_status(struct omap_dm_timer *timer) +{ + u32 l; + + if (unlikely(!timer)) + return -EINVAL; + + omap_dm_timer_enable(timer); + l = omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); + omap_dm_timer_disable(timer); + + return l; +} + static int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler) { @@ -651,8 +621,6 @@ static int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, } omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l); - /* Save the context */ - timer->context.tclr = l; omap_dm_timer_disable(timer); return 0; } @@ -666,9 +634,6 @@ static int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, omap_dm_timer_enable(timer); __omap_dm_timer_int_enable(timer, value); - /* Save the context */ - timer->context.tier = value; - timer->context.twer = value; omap_dm_timer_disable(timer); return 0; } @@ -696,9 +661,6 @@ static int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask) l = omap_dm_timer_read_reg(timer, OMAP_TIMER_WAKEUP_EN_REG) & ~mask; omap_dm_timer_write_reg(timer, OMAP_TIMER_WAKEUP_EN_REG, l); - /* Save the context */ - timer->context.tier &= ~mask; - timer->context.twer &= ~mask; omap_dm_timer_disable(timer); return 0; } @@ -707,7 +669,7 @@ static unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer) { unsigned int l; - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) { + if (unlikely(!timer || !atomic_read(&timer->enabled))) { pr_err("%s: timer not available or enabled.\n", __func__); return 0; } @@ -719,7 +681,7 @@ static unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer) static int omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value) { - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) + if (unlikely(!timer || !atomic_read(&timer->enabled))) return -EINVAL; __omap_dm_timer_write_status(timer, value); @@ -729,7 +691,7 @@ static int omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int static unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer) { - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) { + if (unlikely(!timer || !atomic_read(&timer->enabled))) { pr_err("%s: timer not iavailable or enabled.\n", __func__); return 0; } @@ -739,7 +701,7 @@ static unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer) static int omap_dm_timer_write_counter(struct omap_dm_timer *timer, unsigned int value) { - if (unlikely(!timer || pm_runtime_suspended(&timer->pdev->dev))) { + if (unlikely(!timer || !atomic_read(&timer->enabled))) { pr_err("%s: timer not available or enabled.\n", __func__); return -EINVAL; } @@ -767,6 +729,37 @@ int omap_dm_timers_active(void) return 0; } +static int __maybe_unused omap_dm_timer_runtime_suspend(struct device *dev) +{ + struct omap_dm_timer *timer = dev_get_drvdata(dev); + + atomic_set(&timer->enabled, 0); + + if (timer->capability & OMAP_TIMER_ALWON || !timer->func_base) + return 0; + + omap_timer_save_context(timer); + + return 0; +} + +static int __maybe_unused omap_dm_timer_runtime_resume(struct device *dev) +{ + struct omap_dm_timer *timer = dev_get_drvdata(dev); + + if (!(timer->capability & OMAP_TIMER_ALWON) && timer->func_base) + omap_timer_restore_context(timer); + + atomic_set(&timer->enabled, 1); + + return 0; +} + +static const struct dev_pm_ops omap_dm_timer_pm_ops = { + SET_RUNTIME_PM_OPS(omap_dm_timer_runtime_suspend, + omap_dm_timer_runtime_resume, NULL) +}; + static const struct of_device_id omap_timer_match[]; /** @@ -808,6 +801,8 @@ static int omap_dm_timer_probe(struct platform_device *pdev) if (IS_ERR(timer->io_base)) return PTR_ERR(timer->io_base); + platform_set_drvdata(pdev, timer); + if (dev->of_node) { if (of_find_property(dev->of_node, "ti,timer-alwon", NULL)) timer->capability |= OMAP_TIMER_ALWON; @@ -821,7 +816,11 @@ static int omap_dm_timer_probe(struct platform_device *pdev) timer->id = pdev->id; timer->capability = pdata->timer_capability; timer->reserved = omap_dm_timer_reserved_systimer(timer->id); - timer->get_context_loss_count = pdata->get_context_loss_count; + } + + if (!(timer->capability & OMAP_TIMER_ALWON)) { + timer->nb.notifier_call = omap_timer_context_notifier; + cpu_pm_register_notifier(&timer->nb); } if (pdata) @@ -875,6 +874,8 @@ static int omap_dm_timer_remove(struct platform_device *pdev) list_for_each_entry(timer, &omap_timer_list, node) if (!strcmp(dev_name(&timer->pdev->dev), dev_name(&pdev->dev))) { + if (!(timer->capability & OMAP_TIMER_ALWON)) + cpu_pm_unregister_notifier(&timer->nb); list_del(&timer->node); ret = 0; break; @@ -903,6 +904,7 @@ static const struct omap_dm_timer_ops dmtimer_ops = { .set_load = omap_dm_timer_set_load, .set_match = omap_dm_timer_set_match, .set_pwm = omap_dm_timer_set_pwm, + .get_pwm_status = omap_dm_timer_get_pwm_status, .set_prescaler = omap_dm_timer_set_prescaler, .read_counter = omap_dm_timer_read_counter, .write_counter = omap_dm_timer_write_counter, @@ -953,6 +955,7 @@ static struct platform_driver omap_dm_timer_driver = { .driver = { .name = "omap_timer", .of_match_table = of_match_ptr(omap_timer_match), + .pm = &omap_dm_timer_pm_ops, }, }; diff --git a/drivers/clocksource/timer-u300.c b/drivers/clocksource/timer-u300.c index 32adc3057dda..37cba8dfd45f 100644 --- a/drivers/clocksource/timer-u300.c +++ b/drivers/clocksource/timer-u300.c @@ -330,12 +330,6 @@ static irqreturn_t u300_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction u300_timer_irq = { - .name = "U300 Timer Tick", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = u300_timer_interrupt, -}; - /* * Override the global weak sched_clock symbol with this * local implementation which uses the clocksource to get some @@ -420,7 +414,8 @@ static int __init u300_timer_init_of(struct device_node *np) u300_timer_base + U300_TIMER_APP_RGPT1); /* Set up the IRQ handler */ - ret = setup_irq(irq, &u300_timer_irq); + ret = request_irq(irq, u300_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, "U300 Timer Tick", NULL); if (ret) return ret; diff --git a/drivers/clocksource/timer-vf-pit.c b/drivers/clocksource/timer-vf-pit.c index fef0bb4e0c8c..7ad4a8b008c2 100644 --- a/drivers/clocksource/timer-vf-pit.c +++ b/drivers/clocksource/timer-vf-pit.c @@ -123,19 +123,13 @@ static struct clock_event_device clockevent_pit = { .rating = 300, }; -static struct irqaction pit_timer_irq = { - .name = "VF pit timer", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = pit_timer_interrupt, - .dev_id = &clockevent_pit, -}; - static int __init pit_clockevent_init(unsigned long rate, int irq) { __raw_writel(0, clkevt_base + PITTCTRL); __raw_writel(PITTFLG_TIF, clkevt_base + PITTFLG); - BUG_ON(setup_irq(irq, &pit_timer_irq)); + BUG_ON(request_irq(irq, pit_timer_interrupt, IRQF_TIMER | IRQF_IRQPOLL, + "VF pit timer", &clockevent_pit); clockevent_pit.cpumask = cpumask_of(0); clockevent_pit.irq = irq; diff --git a/drivers/clocksource/timer-vt8500.c b/drivers/clocksource/timer-vt8500.c index bb424bcefbb3..a469b1b5f972 100644 --- a/drivers/clocksource/timer-vt8500.c +++ b/drivers/clocksource/timer-vt8500.c @@ -101,13 +101,6 @@ static irqreturn_t vt8500_timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction irq = { - .name = "vt8500_timer", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = vt8500_timer_interrupt, - .dev_id = &clockevent, -}; - static int __init vt8500_timer_init(struct device_node *np) { int timer_irq, ret; @@ -139,7 +132,9 @@ static int __init vt8500_timer_init(struct device_node *np) clockevent.cpumask = cpumask_of(0); - ret = setup_irq(timer_irq, &irq); + ret = request_irq(timer_irq, vt8500_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, "vt8500_timer", + &clockevent); if (ret) { pr_err("%s: setup_irq failed for %s\n", __func__, clockevent.name); diff --git a/drivers/clocksource/timer-zevio.c b/drivers/clocksource/timer-zevio.c index c0041561f1be..ecaa3568841c 100644 --- a/drivers/clocksource/timer-zevio.c +++ b/drivers/clocksource/timer-zevio.c @@ -53,7 +53,6 @@ struct zevio_timer { struct clk *clk; struct clock_event_device clkevt; - struct irqaction clkevt_irq; char clocksource_name[64]; char clockevent_name[64]; @@ -172,12 +171,12 @@ static int __init zevio_timer_add(struct device_node *node) /* Interrupt to occur when timer value matches 0 */ writel(0, timer->base + IO_MATCH(TIMER_MATCH)); - timer->clkevt_irq.name = timer->clockevent_name; - timer->clkevt_irq.handler = zevio_timer_interrupt; - timer->clkevt_irq.dev_id = timer; - timer->clkevt_irq.flags = IRQF_TIMER | IRQF_IRQPOLL; - - setup_irq(irqnr, &timer->clkevt_irq); + if (request_irq(irqnr, zevio_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, + timer->clockevent_name, timer)) { + pr_err("%s: request_irq() failed\n", + timer->clockevent_name); + } clockevents_config_and_register(&timer->clkevt, clk_get_rate(timer->clk), 0x0001, 0xffff); |