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f5919b65d4
Patch generation process: - rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable - git format-patch v4.14.89 Patches skipped during rebase: - lan78xx: Read MAC address from DT if present - lan78xx: Enable LEDs and auto-negotiation - Revert "softirq: Let ksoftirqd do its job" - sc16is7xx: Fix for multi-channel stall - lan78xx: Ignore DT MAC address if already valid - lan78xx: Simple patch to prevent some crashes - tcp_write_queue_purge clears all the SKBs in the write queue - Revert "lan78xx: Simple patch to prevent some crashes" - lan78xx: Connect phy early - Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro - Revert "Revert "softirq: Let ksoftirqd do its job"" - ASoC: cs4265: SOC_SINGLE register value error fix - Revert "ASoC: cs4265: SOC_SINGLE register value error fix" - Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends" - Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"" Patches dropped after rebase: - net: Add non-mainline source for rtl8192cu wlan - net: Fix rtl8192cu build errors on other platforms - brcm: adds support for BCM43341 wifi - brcmfmac: Mute expected startup 'errors' - ARM64: Fix build break for RTL8187/RTL8192CU wifi - ARM64: Enable RTL8187/RTL8192CU wifi in build config - This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator - brcmfmac: add CLM download support - brcmfmac: request_firmware_direct is quieter - Sets the BCDC priority to constant 0 - brcmfmac: Disable ARP offloading when promiscuous - brcmfmac: Avoid possible out-of-bounds read - brcmfmac: Delete redundant length check - net: rtl8192cu: Normalize indentation - net: rtl8192cu: Fix implicit fallthrough warnings - Revert "Sets the BCDC priority to constant 0" - media: cxd2880: Bump to match 4.18.y version - media: cxd2880-spi: Bump to match 4.18.y version - Revert "mm: alloc_contig: re-allow CMA to compact FS pages" - Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages"" - cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with MEDIA_SUBDRV_AUTOSELECT - 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch - 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch Make I2C built-in instead of modular as in upstream defconfig; also the easiest way to get MFD_ARIZONA enabled, which is required by kmod-sound-soc-rpi-cirrus. Add missing compatible strings from 4.9/960-add-rasbperrypi-compatible.patch, using upstream names for compute modules. Add extra patch to enable the LEDs on lan78xx. Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y) Runtime-tested: bcm2708, bcm2710 Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
100 lines
2.8 KiB
Diff
100 lines
2.8 KiB
Diff
From 1d8af4d16ff95154c134b060900aefac133c50b6 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
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Date: Fri, 23 Oct 2015 16:26:55 +0200
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Subject: [PATCH 009/454] irqchip: irq-bcm2835: Add 2836 FIQ support
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
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---
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drivers/irqchip/irq-bcm2835.c | 43 +++++++++++++++++++++++++++++++++--
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1 file changed, 41 insertions(+), 2 deletions(-)
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--- a/drivers/irqchip/irq-bcm2835.c
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+++ b/drivers/irqchip/irq-bcm2835.c
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@@ -50,8 +50,11 @@
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#include <linux/of_irq.h>
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#include <linux/irqchip.h>
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#include <linux/irqdomain.h>
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+#include <linux/mfd/syscon.h>
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+#include <linux/regmap.h>
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#include <asm/exception.h>
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+#include <asm/mach/irq.h>
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/* Put the bank and irq (32 bits) into the hwirq */
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#define MAKE_HWIRQ(b, n) (((b) << 5) | (n))
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@@ -69,6 +72,9 @@
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#define BANK0_VALID_MASK (BANK0_HWIRQ_MASK | BANK1_HWIRQ | BANK2_HWIRQ \
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| SHORTCUT1_MASK | SHORTCUT2_MASK)
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+#undef ARM_LOCAL_GPU_INT_ROUTING
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+#define ARM_LOCAL_GPU_INT_ROUTING 0x0c
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+
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#define REG_FIQ_CONTROL 0x0c
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#define REG_FIQ_ENABLE 0x80
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#define REG_FIQ_DISABLE 0
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@@ -94,6 +100,7 @@ struct armctrl_ic {
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void __iomem *enable[NR_BANKS];
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void __iomem *disable[NR_BANKS];
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struct irq_domain *domain;
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+ struct regmap *local_regmap;
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};
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static struct armctrl_ic intc __read_mostly;
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@@ -127,12 +134,35 @@ static void armctrl_mask_irq(struct irq_
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static void armctrl_unmask_irq(struct irq_data *d)
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{
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- if (d->hwirq >= NUMBER_IRQS)
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+ if (d->hwirq >= NUMBER_IRQS) {
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+ if (num_online_cpus() > 1) {
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+ unsigned int data;
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+ int ret;
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+
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+ if (!intc.local_regmap) {
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+ pr_err("FIQ is disabled due to missing regmap\n");
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+ return;
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+ }
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+
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+ ret = regmap_read(intc.local_regmap,
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+ ARM_LOCAL_GPU_INT_ROUTING, &data);
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+ if (ret) {
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+ pr_err("Failed to read int routing %d\n", ret);
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+ return;
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+ }
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+
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+ data &= ~0xc;
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+ data |= (1 << 2);
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+ regmap_write(intc.local_regmap,
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+ ARM_LOCAL_GPU_INT_ROUTING, data);
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+ }
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+
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writel_relaxed(REG_FIQ_ENABLE | hwirq_to_fiq(d->hwirq),
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intc.base + REG_FIQ_CONTROL);
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- else
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+ } else {
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writel_relaxed(HWIRQ_BIT(d->hwirq),
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intc.enable[HWIRQ_BANK(d->hwirq)]);
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+ }
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}
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static struct irq_chip armctrl_chip = {
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@@ -209,6 +239,15 @@ static int __init armctrl_of_init(struct
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set_handle_irq(bcm2835_handle_irq);
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}
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+ if (is_2836) {
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+ intc.local_regmap =
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+ syscon_regmap_lookup_by_compatible("brcm,bcm2836-arm-local");
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+ if (IS_ERR(intc.local_regmap)) {
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+ pr_err("Failed to get local register map. FIQ is disabled for cpus > 1\n");
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+ intc.local_regmap = NULL;
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+ }
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+ }
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+
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/* Make a duplicate irq range which is used to enable FIQ */
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for (b = 0; b < NR_BANKS; b++) {
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for (i = 0; i < bank_irqs[b]; i++) {
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