ramips: add support for kernel 5.10

Enable testing kernel.

Delete upstreamed patches:
 0098-disable_cm.patch can be dropped, upstream fixed CM handling.

Fix compile errors by using new kernel APIs.

Fix fuzz by manually editing patches to ensure the code goes in the
right place.

For 721-NET-no-auto-carrier-off-support.patch, revert upstream commit
a307593a6 to keep the OpenWrt ralink driver operational.

Add mt7621-pci-phy patch to select REGMAP_MMIO as discussed in PR #3693
and #3952.

Rename patches to follow the 3-digit classification from the OpenWrt
Developer Guide.

Run automatic quilt refresh.

Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/target/linux/ramips/patches-5.10/311-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch b/target/linux/ramips/patches-5.10/311-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch
new file mode 100644
index 0000000000..a0b81bc6c5
--- /dev/null
+++ b/target/linux/ramips/patches-5.10/311-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 <blogic@openwrt.org>
+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 <blogic@openwrt.org>
+---
+ 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 <asm/time.h>
+ #include <asm/cevt-r4k.h>
+ 
++#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)
+ {
+@@ -296,7 +321,9 @@ 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;
+@@ -326,11 +353,16 @@ 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;
+ 
+@@ -339,6 +371,7 @@ 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;
+ }