From a3764ee29dd09394fa750c78160e300d86532561 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 27 Mar 2022 21:26:31 +0200 Subject: ramips: add linux 5.15 support for mt7621 Signed-off-by: Felix Fietkau --- ...t_mode-to-enable-disable-the-cevt-r4k-irq.patch | 100 +++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 target/linux/ramips/patches-5.15/311-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch (limited to 'target/linux/ramips/patches-5.15/311-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch') diff --git a/target/linux/ramips/patches-5.15/311-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch b/target/linux/ramips/patches-5.15/311-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch new file mode 100644 index 0000000000..172cf98ad1 --- /dev/null +++ b/target/linux/ramips/patches-5.15/311-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch @@ -0,0 +1,100 @@ +From ce3d4a4111a5f7e6b4e74bceae5faa6ce388e8ec Mon Sep 17 00:00:00 2001 +From: John Crispin +Date: Sun, 14 Jul 2013 23:08:11 +0200 +Subject: [PATCH 05/53] MIPS: use set_mode() to enable/disable the cevt-r4k + irq + +Signed-off-by: John Crispin +--- + arch/mips/ralink/Kconfig | 5 +++++ + 1 file changed, 5 insertions(+) + +--- a/arch/mips/ralink/Kconfig ++++ b/arch/mips/ralink/Kconfig +@@ -1,12 +1,17 @@ + # SPDX-License-Identifier: GPL-2.0 + if RALINK + ++config CEVT_SYSTICK_QUIRK ++ bool ++ default n ++ + config CLKEVT_RT3352 + bool + depends on SOC_RT305X || SOC_MT7620 + default y + select TIMER_OF + select CLKSRC_MMIO ++ select CEVT_SYSTICK_QUIRK + + config RALINK_ILL_ACC + bool +--- a/arch/mips/kernel/cevt-r4k.c ++++ b/arch/mips/kernel/cevt-r4k.c +@@ -16,6 +16,31 @@ + #include + #include + ++#ifdef CONFIG_CEVT_SYSTICK_QUIRK ++static int mips_state_oneshot(struct clock_event_device *evt) ++{ ++ unsigned long flags = IRQF_PERCPU | IRQF_TIMER | IRQF_SHARED; ++ if (!cp0_timer_irq_installed) { ++ cp0_timer_irq_installed = 1; ++ if (request_irq(evt->irq, c0_compare_interrupt, flags, "timer", ++ c0_compare_interrupt)) ++ pr_err("Failed to request irq %d (timer)\n", evt->irq); ++ } ++ ++ return 0; ++} ++ ++static int mips_state_shutdown(struct clock_event_device *evt) ++{ ++ if (cp0_timer_irq_installed) { ++ cp0_timer_irq_installed = 0; ++ free_irq(evt->irq, NULL); ++ } ++ ++ return 0; ++} ++#endif ++ + static int mips_next_event(unsigned long delta, + struct clock_event_device *evt) + { +@@ -292,7 +317,9 @@ core_initcall(r4k_register_cpufreq_notif + + int r4k_clockevent_init(void) + { ++#ifndef CONFIG_CEVT_SYSTICK_QUIRK + unsigned long flags = IRQF_PERCPU | IRQF_TIMER | IRQF_SHARED; ++#endif + unsigned int cpu = smp_processor_id(); + struct clock_event_device *cd; + unsigned int irq, min_delta; +@@ -322,11 +349,16 @@ int r4k_clockevent_init(void) + cd->rating = 300; + cd->irq = irq; + cd->cpumask = cpumask_of(cpu); ++#ifdef CONFIG_CEVT_SYSTICK_QUIRK ++ cd->set_state_shutdown = mips_state_shutdown; ++ cd->set_state_oneshot = mips_state_oneshot; ++#endif + cd->set_next_event = mips_next_event; + cd->event_handler = mips_event_handler; + + clockevents_config_and_register(cd, mips_hpt_frequency, min_delta, 0x7fffffff); + ++#ifndef CONFIG_CEVT_SYSTICK_QUIRK + if (cp0_timer_irq_installed) + return 0; + +@@ -335,6 +367,7 @@ int r4k_clockevent_init(void) + if (request_irq(irq, c0_compare_interrupt, flags, "timer", + c0_compare_interrupt)) + pr_err("Failed to request irq %d (timer)\n", irq); ++#endif + + return 0; + } -- cgit v1.2.3