From fce21ae4ccfcee0c28fb18f5507e145fb0b02dec Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 22 Mar 2017 21:09:00 +0100 Subject: brcm2708: rename all patches from raspberrypi git tree to use 950 prefix MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Right now all brcm2708 patches are extracted from the non-mainline raspberrypi/linux git tree. Many of them are hacks and/or are unneeded in LEDE. Raspberry Pi is getting better and better mainline support so it would be nice to finally start maintaining patches in a cleaner way: 1) Backport patches accepted in upstream tree 2) Start using upstream drivers 3) Pick only these patches that are needed for more complete support Handling above tasks requires grouping patches - ideally using the same prefixes as generic ones. It means we should rename existing patches to use some high prefix. This will allow e.g. use 0xx for backported code. Signed-off-by: Rafał Miłecki Acked-by: Florian Fainelli Acked-by: Stijn Tintel --- ...64-Round-Robin-dispatch-IRQs-between-CPUs.patch | 72 ++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.9/950-0131-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch (limited to 'target/linux/brcm2708/patches-4.9/950-0131-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch') diff --git a/target/linux/brcm2708/patches-4.9/950-0131-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch b/target/linux/brcm2708/patches-4.9/950-0131-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch new file mode 100644 index 0000000000..d11ca6bffd --- /dev/null +++ b/target/linux/brcm2708/patches-4.9/950-0131-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch @@ -0,0 +1,72 @@ +From 3a9b48156c6681e846d1a7dbe4ecbb3ae14c2f3c Mon Sep 17 00:00:00 2001 +From: Michael Zoran +Date: Sat, 14 Jan 2017 21:43:57 -0800 +Subject: [PATCH] ARM64: Round-Robin dispatch IRQs between CPUs. + +IRQ-CPU mapping is round robined on ARM64 to increase +concurrency and allow multiple interrupts to be serviced +at a time. This reduces the need for FIQ. + +Signed-off-by: Michael Zoran +--- + drivers/irqchip/irq-bcm2835.c | 15 ++++++++++++++- + drivers/irqchip/irq-bcm2836.c | 21 +++++++++++++++++++++ + 2 files changed, 35 insertions(+), 1 deletion(-) + +--- a/drivers/irqchip/irq-bcm2835.c ++++ b/drivers/irqchip/irq-bcm2835.c +@@ -168,10 +168,23 @@ static void armctrl_unmask_irq(struct ir + } + } + ++#ifdef CONFIG_ARM64 ++void bcm2836_arm_irqchip_spin_gpu_irq(void); ++ ++static void armctrl_ack_irq(struct irq_data *d) ++{ ++ bcm2836_arm_irqchip_spin_gpu_irq(); ++} ++ ++#endif ++ + static struct irq_chip armctrl_chip = { + .name = "ARMCTRL-level", + .irq_mask = armctrl_mask_irq, +- .irq_unmask = armctrl_unmask_irq ++ .irq_unmask = armctrl_unmask_irq, ++#ifdef CONFIG_ARM64 ++ .irq_ack = armctrl_ack_irq ++#endif + }; + + static int armctrl_xlate(struct irq_domain *d, struct device_node *ctrlr, +--- a/drivers/irqchip/irq-bcm2836.c ++++ b/drivers/irqchip/irq-bcm2836.c +@@ -145,6 +145,27 @@ static void bcm2836_arm_irqchip_unmask_g + { + } + ++#ifdef CONFIG_ARM64 ++ ++void bcm2836_arm_irqchip_spin_gpu_irq(void) ++{ ++ u32 i; ++ void __iomem *gpurouting = (intc.base + LOCAL_GPU_ROUTING); ++ u32 routing_val = readl(gpurouting); ++ ++ for (i = 1; i <= 3; i++) { ++ u32 new_routing_val = (routing_val + i) & 3; ++ ++ if (cpu_active(new_routing_val)) { ++ writel(new_routing_val, gpurouting); ++ return; ++ } ++ } ++} ++EXPORT_SYMBOL(bcm2836_arm_irqchip_spin_gpu_irq); ++ ++#endif ++ + static struct irq_chip bcm2836_arm_irqchip_gpu = { + .name = "bcm2836-gpu", + .irq_mask = bcm2836_arm_irqchip_mask_gpu_irq, -- cgit v1.2.3