From 9c348d45d829be10bea4cb8e675f14a1baf9bab1 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Sat, 7 Mar 2015 07:23:29 +0100 Subject: ARM: at91/dt: fix macb compatible strings Some at91 SoCs embed a 10/100 Mbit Ethernet IP, that is based on the at91sam9260 SoC. Fix at91 DTs accordingly. Signed-off-by: Boris Brezillon Reviewed-by: Alexandre Belloni Signed-off-by: David S. Miller --- arch/arm/boot/dts/at91sam9260.dtsi | 2 +- arch/arm/boot/dts/at91sam9263.dtsi | 2 +- arch/arm/boot/dts/at91sam9g45.dtsi | 2 +- arch/arm/boot/dts/at91sam9x5_macb0.dtsi | 2 +- arch/arm/boot/dts/at91sam9x5_macb1.dtsi | 2 +- arch/arm/boot/dts/sama5d3_emac.dtsi | 2 +- 6 files changed, 6 insertions(+), 6 deletions(-) (limited to 'arch/arm/boot') diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi index fff0ee69aab4..9f7c7376f2cf 100644 --- a/arch/arm/boot/dts/at91sam9260.dtsi +++ b/arch/arm/boot/dts/at91sam9260.dtsi @@ -842,7 +842,7 @@ }; macb0: ethernet@fffc4000 { - compatible = "cdns,at32ap7000-macb", "cdns,macb"; + compatible = "cdns,at91sam9260-macb", "cdns,macb"; reg = <0xfffc4000 0x100>; interrupts = <21 IRQ_TYPE_LEVEL_HIGH 3>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi index 1f67bb4c144e..340179ef6ba0 100644 --- a/arch/arm/boot/dts/at91sam9263.dtsi +++ b/arch/arm/boot/dts/at91sam9263.dtsi @@ -845,7 +845,7 @@ }; macb0: ethernet@fffbc000 { - compatible = "cdns,at32ap7000-macb", "cdns,macb"; + compatible = "cdns,at91sam9260-macb", "cdns,macb"; reg = <0xfffbc000 0x100>; interrupts = <21 IRQ_TYPE_LEVEL_HIGH 3>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi index ee80aa9c0759..586eab7b653d 100644 --- a/arch/arm/boot/dts/at91sam9g45.dtsi +++ b/arch/arm/boot/dts/at91sam9g45.dtsi @@ -956,7 +956,7 @@ }; macb0: ethernet@fffbc000 { - compatible = "cdns,at32ap7000-macb", "cdns,macb"; + compatible = "cdns,at91sam9260-macb", "cdns,macb"; reg = <0xfffbc000 0x100>; interrupts = <25 IRQ_TYPE_LEVEL_HIGH 3>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/at91sam9x5_macb0.dtsi b/arch/arm/boot/dts/at91sam9x5_macb0.dtsi index 57e89d1d0325..73d7e30965ba 100644 --- a/arch/arm/boot/dts/at91sam9x5_macb0.dtsi +++ b/arch/arm/boot/dts/at91sam9x5_macb0.dtsi @@ -53,7 +53,7 @@ }; macb0: ethernet@f802c000 { - compatible = "cdns,at32ap7000-macb", "cdns,macb"; + compatible = "cdns,at91sam9260-macb", "cdns,macb"; reg = <0xf802c000 0x100>; interrupts = <24 IRQ_TYPE_LEVEL_HIGH 3>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/at91sam9x5_macb1.dtsi b/arch/arm/boot/dts/at91sam9x5_macb1.dtsi index 663676c02861..d81980c40c7d 100644 --- a/arch/arm/boot/dts/at91sam9x5_macb1.dtsi +++ b/arch/arm/boot/dts/at91sam9x5_macb1.dtsi @@ -41,7 +41,7 @@ }; macb1: ethernet@f8030000 { - compatible = "cdns,at32ap7000-macb", "cdns,macb"; + compatible = "cdns,at91sam9260-macb", "cdns,macb"; reg = <0xf8030000 0x100>; interrupts = <27 IRQ_TYPE_LEVEL_HIGH 3>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/sama5d3_emac.dtsi b/arch/arm/boot/dts/sama5d3_emac.dtsi index fe2af9276312..b4544cf11bad 100644 --- a/arch/arm/boot/dts/sama5d3_emac.dtsi +++ b/arch/arm/boot/dts/sama5d3_emac.dtsi @@ -41,7 +41,7 @@ }; macb1: ethernet@f802c000 { - compatible = "cdns,at32ap7000-macb", "cdns,macb"; + compatible = "cdns,at91sam9260-macb", "cdns,macb"; reg = <0xf802c000 0x100>; interrupts = <35 IRQ_TYPE_LEVEL_HIGH 3>; pinctrl-names = "default"; -- cgit v1.2.3 From 870c81a41f7074a99599be7f10ce5aab43c9f0c4 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 11 Mar 2015 15:43:01 +0000 Subject: ARM: tegra: update DTs to expose legacy interrupt controller Describe the legacy interrupt controller in every tegra DTSI files, and make it the parent of most interrupts. Signed-off-by: Marc Zyngier Link: https://lkml.kernel.org/r/1426088583-15097-5-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper --- arch/arm/boot/dts/tegra114.dtsi | 16 +++++++++++++++- arch/arm/boot/dts/tegra124.dtsi | 16 +++++++++++++++- arch/arm/boot/dts/tegra20.dtsi | 15 ++++++++++++++- arch/arm/boot/dts/tegra30.dtsi | 16 +++++++++++++++- 4 files changed, 59 insertions(+), 4 deletions(-) (limited to 'arch/arm/boot') diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi index 4296b5398bf5..f58a3d9d5f13 100644 --- a/arch/arm/boot/dts/tegra114.dtsi +++ b/arch/arm/boot/dts/tegra114.dtsi @@ -8,7 +8,7 @@ / { compatible = "nvidia,tegra114"; - interrupt-parent = <&gic>; + interrupt-parent = <&lic>; host1x@50000000 { compatible = "nvidia,tegra114-host1x", "simple-bus"; @@ -134,6 +134,19 @@ <0x50046000 0x2000>; interrupts = ; + interrupt-parent = <&gic>; + }; + + lic: interrupt-controller@60004000 { + compatible = "nvidia,tegra114-ictlr", "nvidia,tegra30-ictlr"; + reg = <0x60004000 0x100>, + <0x60004100 0x50>, + <0x60004200 0x50>, + <0x60004300 0x50>, + <0x60004400 0x50>; + interrupt-controller; + #interrupt-cells = <3>; + interrupt-parent = <&gic>; }; timer@60005000 { @@ -766,5 +779,6 @@ (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, ; + interrupt-parent = <&gic>; }; }; diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi index 4be06c6ea0c8..db85695aa7aa 100644 --- a/arch/arm/boot/dts/tegra124.dtsi +++ b/arch/arm/boot/dts/tegra124.dtsi @@ -10,7 +10,7 @@ / { compatible = "nvidia,tegra124"; - interrupt-parent = <&gic>; + interrupt-parent = <&lic>; #address-cells = <2>; #size-cells = <2>; @@ -173,6 +173,7 @@ <0x0 0x50046000 0x0 0x2000>; interrupts = ; + interrupt-parent = <&gic>; }; gpu@0,57000000 { @@ -190,6 +191,18 @@ status = "disabled"; }; + lic: interrupt-controller@60004000 { + compatible = "nvidia,tegra124-ictlr", "nvidia,tegra30-ictlr"; + reg = <0x0 0x60004000 0x0 0x100>, + <0x0 0x60004100 0x0 0x100>, + <0x0 0x60004200 0x0 0x100>, + <0x0 0x60004300 0x0 0x100>, + <0x0 0x60004400 0x0 0x100>; + interrupt-controller; + #interrupt-cells = <3>; + interrupt-parent = <&gic>; + }; + timer@0,60005000 { compatible = "nvidia,tegra124-timer", "nvidia,tegra20-timer"; reg = <0x0 0x60005000 0x0 0x400>; @@ -955,5 +968,6 @@ (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>, ; + interrupt-parent = <&gic>; }; }; diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi index e5527f742696..adf6b048d0bb 100644 --- a/arch/arm/boot/dts/tegra20.dtsi +++ b/arch/arm/boot/dts/tegra20.dtsi @@ -7,7 +7,7 @@ / { compatible = "nvidia,tegra20"; - interrupt-parent = <&intc>; + interrupt-parent = <&lic>; host1x@50000000 { compatible = "nvidia,tegra20-host1x", "simple-bus"; @@ -142,6 +142,7 @@ timer@50040600 { compatible = "arm,cortex-a9-twd-timer"; + interrupt-parent = <&intc>; reg = <0x50040600 0x20>; interrupts = ; @@ -154,6 +155,7 @@ 0x50040100 0x0100>; interrupt-controller; #interrupt-cells = <3>; + interrupt-parent = <&intc>; }; cache-controller@50043000 { @@ -165,6 +167,17 @@ cache-level = <2>; }; + lic: interrupt-controller@60004000 { + compatible = "nvidia,tegra20-ictlr"; + reg = <0x60004000 0x100>, + <0x60004100 0x50>, + <0x60004200 0x50>, + <0x60004300 0x50>; + interrupt-controller; + #interrupt-cells = <3>; + interrupt-parent = <&intc>; + }; + timer@60005000 { compatible = "nvidia,tegra20-timer"; reg = <0x60005000 0x60>; diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi index db4810df142c..60e205a0f63d 100644 --- a/arch/arm/boot/dts/tegra30.dtsi +++ b/arch/arm/boot/dts/tegra30.dtsi @@ -8,7 +8,7 @@ / { compatible = "nvidia,tegra30"; - interrupt-parent = <&intc>; + interrupt-parent = <&lic>; pcie-controller@00003000 { compatible = "nvidia,tegra30-pcie"; @@ -228,6 +228,7 @@ timer@50040600 { compatible = "arm,cortex-a9-twd-timer"; reg = <0x50040600 0x20>; + interrupt-parent = <&intc>; interrupts = ; clocks = <&tegra_car TEGRA30_CLK_TWD>; @@ -239,6 +240,7 @@ 0x50040100 0x0100>; interrupt-controller; #interrupt-cells = <3>; + interrupt-parent = <&intc>; }; cache-controller@50043000 { @@ -250,6 +252,18 @@ cache-level = <2>; }; + lic: interrupt-controller@60004000 { + compatible = "nvidia,tegra30-ictlr"; + reg = <0x60004000 0x100>, + <0x60004100 0x50>, + <0x60004200 0x50>, + <0x60004300 0x50>, + <0x60004400 0x50>; + interrupt-controller; + #interrupt-cells = <3>; + interrupt-parent = <&intc>; + }; + timer@60005000 { compatible = "nvidia,tegra30-timer", "nvidia,tegra20-timer"; reg = <0x60005000 0x400>; -- cgit v1.2.3 From 783d31863fb826f1a3754a2d5959a022a1b12d54 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 11 Mar 2015 15:43:44 +0000 Subject: irqchip: crossbar: Convert dra7 crossbar to stacked domains Support for the TI crossbar used on the DRA7 family of chips is implemented as an ugly hack on the side of the GIC. Converting it to stacked domains makes it slightly more palatable, as it results in a cleanup. Unfortunately, as the DT bindings failed to acknowledge the fact that this is actually yet another interrupt controller (the third, actually), we have yet another breakage. Oh well. Acked-by: Tony Lindgren Signed-off-by: Marc Zyngier Link: https://lkml.kernel.org/r/1426088629-15377-3-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper --- arch/arm/boot/dts/am57xx-beagle-x15.dts | 3 +- arch/arm/boot/dts/dra7-evm.dts | 2 +- arch/arm/boot/dts/dra7.dtsi | 35 +++--- arch/arm/boot/dts/dra72-evm.dts | 1 - arch/arm/boot/dts/dra72x.dtsi | 3 +- arch/arm/boot/dts/dra74x.dtsi | 5 +- arch/arm/mach-omap2/omap4-common.c | 4 - drivers/irqchip/irq-crossbar.c | 210 +++++++++++++++++++------------- include/linux/irqchip/irq-crossbar.h | 11 -- 9 files changed, 149 insertions(+), 125 deletions(-) delete mode 100644 include/linux/irqchip/irq-crossbar.h (limited to 'arch/arm/boot') diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts index 03750af3b49a..170fbf953e5d 100644 --- a/arch/arm/boot/dts/am57xx-beagle-x15.dts +++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts @@ -454,7 +454,6 @@ mcp_rtc: rtc@6f { compatible = "microchip,mcp7941x"; reg = <0x6f>; - interrupt-parent = <&gic>; interrupts = ; /* IRQ_SYS_1N */ pinctrl-names = "default"; @@ -477,7 +476,7 @@ &uart3 { status = "okay"; - interrupts-extended = <&gic GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>, + interrupts-extended = <&crossbar_mpu GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>, <&dra7_pmx_core 0x248>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts index 746cddb1b8f5..789ee58ba47e 100644 --- a/arch/arm/boot/dts/dra7-evm.dts +++ b/arch/arm/boot/dts/dra7-evm.dts @@ -446,7 +446,7 @@ status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&uart1_pins>; - interrupts-extended = <&gic GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>, + interrupts-extended = <&crossbar_mpu GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>, <&dra7_pmx_core 0x3e0>; }; diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi index 5827fedafd43..850f949d409a 100644 --- a/arch/arm/boot/dts/dra7.dtsi +++ b/arch/arm/boot/dts/dra7.dtsi @@ -13,14 +13,13 @@ #include "skeleton.dtsi" #define MAX_SOURCES 400 -#define DIRECT_IRQ(irq) (MAX_SOURCES + irq) / { #address-cells = <1>; #size-cells = <1>; compatible = "ti,dra7xx"; - interrupt-parent = <&gic>; + interrupt-parent = <&crossbar_mpu>; aliases { i2c0 = &i2c1; @@ -50,18 +49,19 @@ , , ; + interrupt-parent = <&gic>; }; gic: interrupt-controller@48211000 { compatible = "arm,cortex-a15-gic"; interrupt-controller; #interrupt-cells = <3>; - arm,routable-irqs = <192>; reg = <0x48211000 0x1000>, <0x48212000 0x1000>, <0x48214000 0x2000>, <0x48216000 0x2000>; interrupts = ; + interrupt-parent = <&gic>; }; /* @@ -91,8 +91,8 @@ ti,hwmods = "l3_main_1", "l3_main_2"; reg = <0x44000000 0x1000000>, <0x45000000 0x1000>; - interrupts = , - ; + interrupts-extended = <&crossbar_mpu GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>, + <&gic GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>; prm: prm@4ae06000 { compatible = "ti,dra7-prm"; @@ -344,7 +344,7 @@ uart1: serial@4806a000 { compatible = "ti,omap4-uart"; reg = <0x4806a000 0x100>; - interrupts-extended = <&gic GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>; + interrupts-extended = <&crossbar_mpu GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>; ti,hwmods = "uart1"; clock-frequency = <48000000>; status = "disabled"; @@ -355,7 +355,7 @@ uart2: serial@4806c000 { compatible = "ti,omap4-uart"; reg = <0x4806c000 0x100>; - interrupts-extended = <&gic GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart2"; clock-frequency = <48000000>; status = "disabled"; @@ -366,7 +366,7 @@ uart3: serial@48020000 { compatible = "ti,omap4-uart"; reg = <0x48020000 0x100>; - interrupts-extended = <&gic GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart3"; clock-frequency = <48000000>; status = "disabled"; @@ -377,7 +377,7 @@ uart4: serial@4806e000 { compatible = "ti,omap4-uart"; reg = <0x4806e000 0x100>; - interrupts-extended = <&gic GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart4"; clock-frequency = <48000000>; status = "disabled"; @@ -388,7 +388,7 @@ uart5: serial@48066000 { compatible = "ti,omap4-uart"; reg = <0x48066000 0x100>; - interrupts-extended = <&gic GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart5"; clock-frequency = <48000000>; status = "disabled"; @@ -399,7 +399,7 @@ uart6: serial@48068000 { compatible = "ti,omap4-uart"; reg = <0x48068000 0x100>; - interrupts-extended = <&gic GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart6"; clock-frequency = <48000000>; status = "disabled"; @@ -410,7 +410,7 @@ uart7: serial@48420000 { compatible = "ti,omap4-uart"; reg = <0x48420000 0x100>; - interrupts-extended = <&gic GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart7"; clock-frequency = <48000000>; status = "disabled"; @@ -419,7 +419,7 @@ uart8: serial@48422000 { compatible = "ti,omap4-uart"; reg = <0x48422000 0x100>; - interrupts-extended = <&gic GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart8"; clock-frequency = <48000000>; status = "disabled"; @@ -428,7 +428,7 @@ uart9: serial@48424000 { compatible = "ti,omap4-uart"; reg = <0x48424000 0x100>; - interrupts-extended = <&gic GIC_SPI 220 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart9"; clock-frequency = <48000000>; status = "disabled"; @@ -437,7 +437,7 @@ uart10: serial@4ae2b000 { compatible = "ti,omap4-uart"; reg = <0x4ae2b000 0x100>; - interrupts-extended = <&gic GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart10"; clock-frequency = <48000000>; status = "disabled"; @@ -1337,9 +1337,12 @@ status = "disabled"; }; - crossbar_mpu: crossbar@4a020000 { + crossbar_mpu: crossbar@4a002a48 { compatible = "ti,irq-crossbar"; reg = <0x4a002a48 0x130>; + interrupt-controller; + interrupt-parent = <&gic>; + #interrupt-cells = <3>; ti,max-irqs = <160>; ti,max-crossbar-sources = ; ti,reg-size = <2>; diff --git a/arch/arm/boot/dts/dra72-evm.dts b/arch/arm/boot/dts/dra72-evm.dts index 4d8711713610..2373054f588d 100644 --- a/arch/arm/boot/dts/dra72-evm.dts +++ b/arch/arm/boot/dts/dra72-evm.dts @@ -160,7 +160,6 @@ pinctrl-0 = <&tps65917_pins_default>; interrupts = ; /* IRQ_SYS_1N */ - interrupt-parent = <&gic>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/dra72x.dtsi b/arch/arm/boot/dts/dra72x.dtsi index e5a3d23a3df1..e782bf1dd863 100644 --- a/arch/arm/boot/dts/dra72x.dtsi +++ b/arch/arm/boot/dts/dra72x.dtsi @@ -25,6 +25,7 @@ pmu { compatible = "arm,cortex-a15-pmu"; - interrupts = ; + interrupt-parent = <&gic>; + interrupts = ; }; }; diff --git a/arch/arm/boot/dts/dra74x.dtsi b/arch/arm/boot/dts/dra74x.dtsi index 10173fab1a15..0fc758db55f5 100644 --- a/arch/arm/boot/dts/dra74x.dtsi +++ b/arch/arm/boot/dts/dra74x.dtsi @@ -41,8 +41,9 @@ pmu { compatible = "arm,cortex-a15-pmu"; - interrupts = , - ; + interrupt-parent = <&gic>; + interrupts = , + ; }; ocp { diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c index cee0fe1ee6ff..cf7aafb27fd1 100644 --- a/arch/arm/mach-omap2/omap4-common.c +++ b/arch/arm/mach-omap2/omap4-common.c @@ -22,7 +22,6 @@ #include #include #include -#include #include #include #include @@ -292,8 +291,5 @@ void __init omap_gic_of_init(void) skip_errata_init: omap_wakeupgen_init(); -#ifdef CONFIG_IRQ_CROSSBAR - irqcrossbar_init(); -#endif irqchip_init(); } diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c index bbbaf5de65d2..692fe2bc8197 100644 --- a/drivers/irqchip/irq-crossbar.c +++ b/drivers/irqchip/irq-crossbar.c @@ -11,11 +11,12 @@ */ #include #include +#include #include #include #include -#include -#include + +#include "irqchip.h" #define IRQ_FREE -1 #define IRQ_RESERVED -2 @@ -24,6 +25,7 @@ /** * struct crossbar_device - crossbar device description + * @lock: spinlock serializing access to @irq_map * @int_max: maximum number of supported interrupts * @safe_map: safe default value to initialize the crossbar * @max_crossbar_sources: Maximum number of crossbar sources @@ -33,6 +35,7 @@ * @write: register write function pointer */ struct crossbar_device { + raw_spinlock_t lock; uint int_max; uint safe_map; uint max_crossbar_sources; @@ -44,72 +47,101 @@ struct crossbar_device { static struct crossbar_device *cb; -static inline void crossbar_writel(int irq_no, int cb_no) +static void crossbar_writel(int irq_no, int cb_no) { writel(cb_no, cb->crossbar_base + cb->register_offsets[irq_no]); } -static inline void crossbar_writew(int irq_no, int cb_no) +static void crossbar_writew(int irq_no, int cb_no) { writew(cb_no, cb->crossbar_base + cb->register_offsets[irq_no]); } -static inline void crossbar_writeb(int irq_no, int cb_no) +static void crossbar_writeb(int irq_no, int cb_no) { writeb(cb_no, cb->crossbar_base + cb->register_offsets[irq_no]); } -static inline int get_prev_map_irq(int cb_no) -{ - int i; - - for (i = cb->int_max - 1; i >= 0; i--) - if (cb->irq_map[i] == cb_no) - return i; - - return -ENODEV; -} +static struct irq_chip crossbar_chip = { + .name = "CBAR", + .irq_eoi = irq_chip_eoi_parent, + .irq_mask = irq_chip_mask_parent, + .irq_unmask = irq_chip_unmask_parent, + .irq_retrigger = irq_chip_retrigger_hierarchy, + .irq_set_wake = irq_chip_set_wake_parent, +#ifdef CONFIG_SMP + .irq_set_affinity = irq_chip_set_affinity_parent, +#endif +}; -static inline int allocate_free_irq(int cb_no) +static int allocate_gic_irq(struct irq_domain *domain, unsigned virq, + irq_hw_number_t hwirq) { + struct of_phandle_args args; int i; + int err; + raw_spin_lock(&cb->lock); for (i = cb->int_max - 1; i >= 0; i--) { if (cb->irq_map[i] == IRQ_FREE) { - cb->irq_map[i] = cb_no; - return i; + cb->irq_map[i] = hwirq; + break; } } + raw_spin_unlock(&cb->lock); - return -ENODEV; -} + if (i < 0) + return -ENODEV; -static inline bool needs_crossbar_write(irq_hw_number_t hw) -{ - int cb_no; + args.np = domain->parent->of_node; + args.args_count = 3; + args.args[0] = 0; /* SPI */ + args.args[1] = i; + args.args[2] = IRQ_TYPE_LEVEL_HIGH; - if (hw > GIC_IRQ_START) { - cb_no = cb->irq_map[hw - GIC_IRQ_START]; - if (cb_no != IRQ_RESERVED && cb_no != IRQ_SKIP) - return true; - } + err = irq_domain_alloc_irqs_parent(domain, virq, 1, &args); + if (err) + cb->irq_map[i] = IRQ_FREE; + else + cb->write(i, hwirq); - return false; + return err; } -static int crossbar_domain_map(struct irq_domain *d, unsigned int irq, - irq_hw_number_t hw) +static int crossbar_domain_alloc(struct irq_domain *d, unsigned int virq, + unsigned int nr_irqs, void *data) { - if (needs_crossbar_write(hw)) - cb->write(hw - GIC_IRQ_START, cb->irq_map[hw - GIC_IRQ_START]); + struct of_phandle_args *args = data; + irq_hw_number_t hwirq; + int i; + + if (args->args_count != 3) + return -EINVAL; /* Not GIC compliant */ + if (args->args[0] != 0) + return -EINVAL; /* No PPI should point to this domain */ + + hwirq = args->args[1]; + if ((hwirq + nr_irqs) > cb->max_crossbar_sources) + return -EINVAL; /* Can't deal with this */ + + for (i = 0; i < nr_irqs; i++) { + int err = allocate_gic_irq(d, virq + i, hwirq + i); + + if (err) + return err; + + irq_domain_set_hwirq_and_chip(d, virq + i, hwirq + i, + &crossbar_chip, NULL); + } return 0; } /** - * crossbar_domain_unmap - unmap a crossbar<->irq connection - * @d: domain of irq to unmap - * @irq: virq number + * crossbar_domain_free - unmap/free a crossbar<->irq connection + * @domain: domain of irq to unmap + * @virq: virq number + * @nr_irqs: number of irqs to free * * We do not maintain a use count of total number of map/unmap * calls for a particular irq to find out if a irq can be really @@ -117,14 +149,20 @@ static int crossbar_domain_map(struct irq_domain *d, unsigned int irq, * after which irq is anyways unusable. So an explicit map has to be called * after that. */ -static void crossbar_domain_unmap(struct irq_domain *d, unsigned int irq) +static void crossbar_domain_free(struct irq_domain *domain, unsigned int virq, + unsigned int nr_irqs) { - irq_hw_number_t hw = irq_get_irq_data(irq)->hwirq; + int i; - if (needs_crossbar_write(hw)) { - cb->irq_map[hw - GIC_IRQ_START] = IRQ_FREE; - cb->write(hw - GIC_IRQ_START, cb->safe_map); + raw_spin_lock(&cb->lock); + for (i = 0; i < nr_irqs; i++) { + struct irq_data *d = irq_domain_get_irq_data(domain, virq + i); + + irq_domain_reset_irq_data(d); + cb->irq_map[d->hwirq] = IRQ_FREE; + cb->write(d->hwirq, cb->safe_map); } + raw_spin_unlock(&cb->lock); } static int crossbar_domain_xlate(struct irq_domain *d, @@ -133,44 +171,22 @@ static int crossbar_domain_xlate(struct irq_domain *d, unsigned long *out_hwirq, unsigned int *out_type) { - int ret; - int req_num = intspec[1]; - int direct_map_num; - - if (req_num >= cb->max_crossbar_sources) { - direct_map_num = req_num - cb->max_crossbar_sources; - if (direct_map_num < cb->int_max) { - ret = cb->irq_map[direct_map_num]; - if (ret == IRQ_RESERVED || ret == IRQ_SKIP) { - /* We use the interrupt num as h/w irq num */ - ret = direct_map_num; - goto found; - } - } - - pr_err("%s: requested crossbar number %d > max %d\n", - __func__, req_num, cb->max_crossbar_sources); - return -EINVAL; - } - - ret = get_prev_map_irq(req_num); - if (ret >= 0) - goto found; - - ret = allocate_free_irq(req_num); - - if (ret < 0) - return ret; - -found: - *out_hwirq = ret + GIC_IRQ_START; + if (d->of_node != controller) + return -EINVAL; /* Shouldn't happen, really... */ + if (intsize != 3) + return -EINVAL; /* Not GIC compliant */ + if (intspec[0] != 0) + return -EINVAL; /* No PPI should point to this domain */ + + *out_hwirq = intspec[1]; + *out_type = intspec[2]; return 0; } -static const struct irq_domain_ops routable_irq_domain_ops = { - .map = crossbar_domain_map, - .unmap = crossbar_domain_unmap, - .xlate = crossbar_domain_xlate +static const struct irq_domain_ops crossbar_domain_ops = { + .alloc = crossbar_domain_alloc, + .free = crossbar_domain_free, + .xlate = crossbar_domain_xlate, }; static int __init crossbar_of_init(struct device_node *node) @@ -293,7 +309,8 @@ static int __init crossbar_of_init(struct device_node *node) cb->write(i, cb->safe_map); } - register_routable_domain_ops(&routable_irq_domain_ops); + raw_spin_lock_init(&cb->lock); + return 0; err_reg_offset: @@ -309,18 +326,37 @@ err_cb: return ret; } -static const struct of_device_id crossbar_match[] __initconst = { - { .compatible = "ti,irq-crossbar" }, - {} -}; - -int __init irqcrossbar_init(void) +static int __init irqcrossbar_init(struct device_node *node, + struct device_node *parent) { - struct device_node *np; - np = of_find_matching_node(NULL, crossbar_match); - if (!np) + struct irq_domain *parent_domain, *domain; + int err; + + if (!parent) { + pr_err("%s: no parent, giving up\n", node->full_name); return -ENODEV; + } + + parent_domain = irq_find_host(parent); + if (!parent_domain) { + pr_err("%s: unable to obtain parent domain\n", node->full_name); + return -ENXIO; + } + + err = crossbar_of_init(node); + if (err) + return err; + + domain = irq_domain_add_hierarchy(parent_domain, 0, + cb->max_crossbar_sources, + node, &crossbar_domain_ops, + NULL); + if (!domain) { + pr_err("%s: failed to allocated domain\n", node->full_name); + return -ENOMEM; + } - crossbar_of_init(np); return 0; } + +IRQCHIP_DECLARE(ti_irqcrossbar, "ti,irq-crossbar", irqcrossbar_init); diff --git a/include/linux/irqchip/irq-crossbar.h b/include/linux/irqchip/irq-crossbar.h deleted file mode 100644 index e5537b81df8d..000000000000 --- a/include/linux/irqchip/irq-crossbar.h +++ /dev/null @@ -1,11 +0,0 @@ -/* - * drivers/irqchip/irq-crossbar.h - * - * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ -int irqcrossbar_init(void); -- cgit v1.2.3 From 7136d457f365ecc93ddffcdd42ab49a8473f260b Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 11 Mar 2015 15:43:49 +0000 Subject: ARM: omap: convert wakeupgen to stacked domains OMAP4/5 has been (ab)using the gic_arch_extn to provide wakeup from suspend, and it makes a lot of sense to convert this code to use stacked domains instead. This patch does just this, updating the DT files to actually reflect what the HW provides. BIG FAT WARNING: because the DTs were so far lying by not exposing the WUGEN HW block, kernels with this patch applied won't have any suspend-resume facility when booted with old DTs, and old kernels with updated DTs won't even boot. On a platform with this patch applied, the system looks like this: root@bacon-fat:~# cat /proc/interrupts CPU0 CPU1 16: 0 0 WUGEN 37 gp_timer 19: 233799 155916 GIC 27 arch_timer 23: 0 0 WUGEN 9 l3-dbg-irq 24: 1 0 WUGEN 10 l3-app-irq 27: 282 0 WUGEN 13 omap-dma-engine 44: 0 0 4ae10000.gpio 13 DMA 294: 0 0 WUGEN 20 gpmc 297: 506 0 WUGEN 56 48070000.i2c 298: 0 0 WUGEN 57 48072000.i2c 299: 0 0 WUGEN 61 48060000.i2c 300: 0 0 WUGEN 62 4807a000.i2c 301: 8 0 WUGEN 60 4807c000.i2c 308: 2439 0 WUGEN 74 OMAP UART2 312: 362 0 WUGEN 83 mmc2 313: 502 0 WUGEN 86 mmc0 314: 13 0 WUGEN 94 mmc1 350: 0 0 PRCM pinctrl, pinctrl 406: 35155709 0 GIC 109 ehci_hcd:usb1 407: 0 0 WUGEN 7 palmas 409: 0 0 WUGEN 119 twl6040 410: 0 0 twl6040 5 twl6040_irq_ready 411: 0 0 twl6040 0 twl6040_irq_th IPI0: 0 1 CPU wakeup interrupts IPI1: 0 0 Timer broadcast interrupts IPI2: 95334 902334 Rescheduling interrupts IPI3: 0 0 Function call interrupts IPI4: 479 648 Single function call interrupts IPI5: 0 0 CPU stop interrupts IPI6: 0 0 IRQ work interrupts IPI7: 0 0 completion interrupts Err: 0 Acked-by: Tony Lindgren Signed-off-by: Marc Zyngier Link: https://lkml.kernel.org/r/1426088629-15377-8-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper --- arch/arm/boot/dts/am4372.dtsi | 11 ++- arch/arm/boot/dts/am437x-gp-evm.dts | 1 - arch/arm/boot/dts/am437x-sk-evm.dts | 1 - arch/arm/boot/dts/am43x-epos-evm.dts | 1 - arch/arm/boot/dts/dra7.dtsi | 12 ++- arch/arm/boot/dts/dra72x.dtsi | 2 +- arch/arm/boot/dts/dra74x.dtsi | 2 +- arch/arm/boot/dts/omap4-duovero.dtsi | 2 - arch/arm/boot/dts/omap4-panda-common.dtsi | 8 +- arch/arm/boot/dts/omap4-sdp.dts | 8 +- arch/arm/boot/dts/omap4-var-som-om44.dtsi | 2 - arch/arm/boot/dts/omap4.dtsi | 18 ++++- arch/arm/boot/dts/omap5-cm-t54.dts | 1 - arch/arm/boot/dts/omap5-uevm.dts | 2 - arch/arm/boot/dts/omap5.dtsi | 26 +++--- arch/arm/mach-omap2/omap-wakeupgen.c | 128 +++++++++++++++++++++++------- arch/arm/mach-omap2/omap-wakeupgen.h | 1 - arch/arm/mach-omap2/omap4-common.c | 23 +++--- 18 files changed, 171 insertions(+), 78 deletions(-) (limited to 'arch/arm/boot') diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi index 1943fc333e7c..8a099bc10c1e 100644 --- a/arch/arm/boot/dts/am4372.dtsi +++ b/arch/arm/boot/dts/am4372.dtsi @@ -15,7 +15,7 @@ / { compatible = "ti,am4372", "ti,am43"; - interrupt-parent = <&gic>; + interrupt-parent = <&wakeupgen>; aliases { @@ -48,6 +48,15 @@ #interrupt-cells = <3>; reg = <0x48241000 0x1000>, <0x48240100 0x0100>; + interrupt-parent = <&gic>; + }; + + wakeupgen: interrupt-controller@48281000 { + compatible = "ti,omap4-wugen-mpu"; + interrupt-controller; + #interrupt-cells = <3>; + reg = <0x48281000 0x1000>; + interrupt-parent = <&gic>; }; l2-cache-controller@48242000 { diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts index f84d9715a4a9..26956cb50835 100644 --- a/arch/arm/boot/dts/am437x-gp-evm.dts +++ b/arch/arm/boot/dts/am437x-gp-evm.dts @@ -352,7 +352,6 @@ reg = <0x24>; compatible = "ti,tps65218"; interrupts = ; /* NMIn */ - interrupt-parent = <&gic>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts index 832d24318f62..8ae29c955c11 100644 --- a/arch/arm/boot/dts/am437x-sk-evm.dts +++ b/arch/arm/boot/dts/am437x-sk-evm.dts @@ -392,7 +392,6 @@ tps@24 { compatible = "ti,tps65218"; reg = <0x24>; - interrupt-parent = <&gic>; interrupts = ; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts index 257c099c347e..1d7109196872 100644 --- a/arch/arm/boot/dts/am43x-epos-evm.dts +++ b/arch/arm/boot/dts/am43x-epos-evm.dts @@ -369,7 +369,6 @@ reg = <0x24>; compatible = "ti,tps65218"; interrupts = ; /* NMIn */ - interrupt-parent = <&gic>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi index 850f949d409a..c65eea095afa 100644 --- a/arch/arm/boot/dts/dra7.dtsi +++ b/arch/arm/boot/dts/dra7.dtsi @@ -64,6 +64,14 @@ interrupt-parent = <&gic>; }; + wakeupgen: interrupt-controller@48281000 { + compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu"; + interrupt-controller; + #interrupt-cells = <3>; + reg = <0x48281000 0x1000>; + interrupt-parent = <&gic>; + }; + /* * The soc node represents the soc top level view. It is used for IPs * that are not memory mapped in the MPU view or for the MPU itself. @@ -92,7 +100,7 @@ reg = <0x44000000 0x1000000>, <0x45000000 0x1000>; interrupts-extended = <&crossbar_mpu GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>, - <&gic GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>; + <&wakeupgen GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>; prm: prm@4ae06000 { compatible = "ti,dra7-prm"; @@ -1341,7 +1349,7 @@ compatible = "ti,irq-crossbar"; reg = <0x4a002a48 0x130>; interrupt-controller; - interrupt-parent = <&gic>; + interrupt-parent = <&wakeupgen>; #interrupt-cells = <3>; ti,max-irqs = <160>; ti,max-crossbar-sources = ; diff --git a/arch/arm/boot/dts/dra72x.dtsi b/arch/arm/boot/dts/dra72x.dtsi index e782bf1dd863..f7fb0d0ef25a 100644 --- a/arch/arm/boot/dts/dra72x.dtsi +++ b/arch/arm/boot/dts/dra72x.dtsi @@ -25,7 +25,7 @@ pmu { compatible = "arm,cortex-a15-pmu"; - interrupt-parent = <&gic>; + interrupt-parent = <&wakeupgen>; interrupts = ; }; }; diff --git a/arch/arm/boot/dts/dra74x.dtsi b/arch/arm/boot/dts/dra74x.dtsi index 0fc758db55f5..00eeed789b4b 100644 --- a/arch/arm/boot/dts/dra74x.dtsi +++ b/arch/arm/boot/dts/dra74x.dtsi @@ -41,7 +41,7 @@ pmu { compatible = "arm,cortex-a15-pmu"; - interrupt-parent = <&gic>; + interrupt-parent = <&wakeupgen>; interrupts = , ; }; diff --git a/arch/arm/boot/dts/omap4-duovero.dtsi b/arch/arm/boot/dts/omap4-duovero.dtsi index e860ccd9d09c..f2a94fa62552 100644 --- a/arch/arm/boot/dts/omap4-duovero.dtsi +++ b/arch/arm/boot/dts/omap4-duovero.dtsi @@ -173,14 +173,12 @@ twl: twl@48 { reg = <0x48>; interrupts = ; /* IRQ_SYS_1N cascaded to gic */ - interrupt-parent = <&gic>; }; twl6040: twl@4b { compatible = "ti,twl6040"; reg = <0x4b>; interrupts = ; /* IRQ_SYS_2N cascaded to gic */ - interrupt-parent = <&gic>; ti,audpwron-gpio = <&gpio6 0 GPIO_ACTIVE_HIGH>; /* gpio_160 */ vio-supply = <&v1v8>; diff --git a/arch/arm/boot/dts/omap4-panda-common.dtsi b/arch/arm/boot/dts/omap4-panda-common.dtsi index 150513506c19..7c15fb2e2fe4 100644 --- a/arch/arm/boot/dts/omap4-panda-common.dtsi +++ b/arch/arm/boot/dts/omap4-panda-common.dtsi @@ -372,7 +372,6 @@ reg = <0x48>; /* IRQ# = 7 */ interrupts = ; /* IRQ_SYS_1N cascaded to gic */ - interrupt-parent = <&gic>; }; twl6040: twl@4b { @@ -384,7 +383,6 @@ /* IRQ# = 119 */ interrupts = ; /* IRQ_SYS_2N cascaded to gic */ - interrupt-parent = <&gic>; ti,audpwron-gpio = <&gpio4 31 GPIO_ACTIVE_HIGH>; /* gpio line 127 */ vio-supply = <&v1v8>; @@ -479,17 +477,17 @@ }; &uart2 { - interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH + interrupts-extended = <&wakeupgen GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH &omap4_pmx_core OMAP4_UART2_RX>; }; &uart3 { - interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH + interrupts-extended = <&wakeupgen GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH &omap4_pmx_core OMAP4_UART3_RX>; }; &uart4 { - interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH + interrupts-extended = <&wakeupgen GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH &omap4_pmx_core OMAP4_UART4_RX>; }; diff --git a/arch/arm/boot/dts/omap4-sdp.dts b/arch/arm/boot/dts/omap4-sdp.dts index 3e1da43068f6..8aca8dae968a 100644 --- a/arch/arm/boot/dts/omap4-sdp.dts +++ b/arch/arm/boot/dts/omap4-sdp.dts @@ -363,7 +363,6 @@ reg = <0x48>; /* SPI = 0, IRQ# = 7, 4 = active high level-sensitive */ interrupts = ; /* IRQ_SYS_1N cascaded to gic */ - interrupt-parent = <&gic>; }; twl6040: twl@4b { @@ -375,7 +374,6 @@ /* SPI = 0, IRQ# = 119, 4 = active high level-sensitive */ interrupts = ; /* IRQ_SYS_2N cascaded to gic */ - interrupt-parent = <&gic>; ti,audpwron-gpio = <&gpio4 31 0>; /* gpio line 127 */ vio-supply = <&v1v8>; @@ -570,21 +568,21 @@ }; &uart2 { - interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH + interrupts-extended = <&wakeupgen GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH &omap4_pmx_core OMAP4_UART2_RX>; pinctrl-names = "default"; pinctrl-0 = <&uart2_pins>; }; &uart3 { - interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH + interrupts-extended = <&wakeupgen GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH &omap4_pmx_core OMAP4_UART3_RX>; pinctrl-names = "default"; pinctrl-0 = <&uart3_pins>; }; &uart4 { - interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH + interrupts-extended = <&wakeupgen GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH &omap4_pmx_core OMAP4_UART4_RX>; pinctrl-names = "default"; pinctrl-0 = <&uart4_pins>; diff --git a/arch/arm/boot/dts/omap4-var-som-om44.dtsi b/arch/arm/boot/dts/omap4-var-som-om44.dtsi index 062701e1a898..a4f1ba2e1903 100644 --- a/arch/arm/boot/dts/omap4-var-som-om44.dtsi +++ b/arch/arm/boot/dts/omap4-var-som-om44.dtsi @@ -185,7 +185,6 @@ reg = <0x48>; /* SPI = 0, IRQ# = 7, 4 = active high level-sensitive */ interrupts = ; /* IRQ_SYS_1N cascaded to gic */ - interrupt-parent = <&gic>; }; twl6040: twl@4b { @@ -197,7 +196,6 @@ /* SPI = 0, IRQ# = 119, 4 = active high level-sensitive */ interrupts = ; /* IRQ_SYS_2N cascaded to gic */ - interrupt-parent = <&gic>; ti,audpwron-gpio = <&gpio6 22 0>; /* gpio 182 */ vio-supply = <&v1v8>; diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi index 074147cebae4..7cb5236f751d 100644 --- a/arch/arm/boot/dts/omap4.dtsi +++ b/arch/arm/boot/dts/omap4.dtsi @@ -14,7 +14,7 @@ / { compatible = "ti,omap4430", "ti,omap4"; - interrupt-parent = <&gic>; + interrupt-parent = <&wakeupgen>; aliases { i2c0 = &i2c1; @@ -56,6 +56,7 @@ #interrupt-cells = <3>; reg = <0x48241000 0x1000>, <0x48240100 0x0100>; + interrupt-parent = <&gic>; }; L2: l2-cache-controller@48242000 { @@ -70,6 +71,15 @@ clocks = <&mpu_periphclk>; reg = <0x48240600 0x20>; interrupts = ; + interrupt-parent = <&gic>; + }; + + wakeupgen: interrupt-controller@48281000 { + compatible = "ti,omap4-wugen-mpu"; + interrupt-controller; + #interrupt-cells = <3>; + reg = <0x48281000 0x1000>; + interrupt-parent = <&gic>; }; /* @@ -319,7 +329,7 @@ uart2: serial@4806c000 { compatible = "ti,omap4-uart"; reg = <0x4806c000 0x100>; - interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart2"; clock-frequency = <48000000>; }; @@ -327,7 +337,7 @@ uart3: serial@48020000 { compatible = "ti,omap4-uart"; reg = <0x48020000 0x100>; - interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart3"; clock-frequency = <48000000>; }; @@ -335,7 +345,7 @@ uart4: serial@4806e000 { compatible = "ti,omap4-uart"; reg = <0x4806e000 0x100>; - interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart4"; clock-frequency = <48000000>; }; diff --git a/arch/arm/boot/dts/omap5-cm-t54.dts b/arch/arm/boot/dts/omap5-cm-t54.dts index b54b271e153b..61ad2ea34720 100644 --- a/arch/arm/boot/dts/omap5-cm-t54.dts +++ b/arch/arm/boot/dts/omap5-cm-t54.dts @@ -412,7 +412,6 @@ palmas: palmas@48 { compatible = "ti,palmas"; interrupts = ; /* IRQ_SYS_1N */ - interrupt-parent = <&gic>; reg = <0x48>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts index 159720d6c956..74777a6e200a 100644 --- a/arch/arm/boot/dts/omap5-uevm.dts +++ b/arch/arm/boot/dts/omap5-uevm.dts @@ -311,7 +311,6 @@ palmas: palmas@48 { compatible = "ti,palmas"; interrupts = ; /* IRQ_SYS_1N */ - interrupt-parent = <&gic>; reg = <0x48>; interrupt-controller; #interrupt-cells = <2>; @@ -521,7 +520,6 @@ pinctrl-0 = <&twl6040_pins>; interrupts = ; /* IRQ_SYS_2N cascaded to gic */ - interrupt-parent = <&gic>; ti,audpwron-gpio = <&gpio5 13 0>; /* gpio line 141 */ vio-supply = <&smps7_reg>; diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi index b321fdf42c9f..b056156e2a7a 100644 --- a/arch/arm/boot/dts/omap5.dtsi +++ b/arch/arm/boot/dts/omap5.dtsi @@ -18,7 +18,7 @@ #size-cells = <1>; compatible = "ti,omap5"; - interrupt-parent = <&gic>; + interrupt-parent = <&wakeupgen>; aliases { i2c0 = &i2c1; @@ -79,6 +79,7 @@ , , ; + interrupt-parent = <&gic>; }; pmu { @@ -95,6 +96,15 @@ <0x48212000 0x1000>, <0x48214000 0x2000>, <0x48216000 0x2000>; + interrupt-parent = <&gic>; + }; + + wakeupgen: interrupt-controller@48281000 { + compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu"; + interrupt-controller; + #interrupt-cells = <3>; + reg = <0x48281000 0x1000>; + interrupt-parent = <&gic>; }; /* @@ -458,7 +468,7 @@ uart1: serial@4806a000 { compatible = "ti,omap4-uart"; reg = <0x4806a000 0x100>; - interrupts-extended = <&gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart1"; clock-frequency = <48000000>; }; @@ -466,7 +476,7 @@ uart2: serial@4806c000 { compatible = "ti,omap4-uart"; reg = <0x4806c000 0x100>; - interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart2"; clock-frequency = <48000000>; }; @@ -474,7 +484,7 @@ uart3: serial@48020000 { compatible = "ti,omap4-uart"; reg = <0x48020000 0x100>; - interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart3"; clock-frequency = <48000000>; }; @@ -482,7 +492,7 @@ uart4: serial@4806e000 { compatible = "ti,omap4-uart"; reg = <0x4806e000 0x100>; - interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart4"; clock-frequency = <48000000>; }; @@ -490,7 +500,7 @@ uart5: serial@48066000 { compatible = "ti,omap4-uart"; reg = <0x48066000 0x100>; - interrupts-extended = <&gic GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart5"; clock-frequency = <48000000>; }; @@ -498,7 +508,7 @@ uart6: serial@48068000 { compatible = "ti,omap4-uart"; reg = <0x48068000 0x100>; - interrupts-extended = <&gic GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>; + interrupts = ; ti,hwmods = "uart6"; clock-frequency = <48000000>; }; @@ -883,14 +893,12 @@ usbhsohci: ohci@4a064800 { compatible = "ti,ohci-omap3"; reg = <0x4a064800 0x400>; - interrupt-parent = <&gic>; interrupts = ; }; usbhsehci: ehci@4a064c00 { compatible = "ti,ehci-omap"; reg = <0x4a064c00 0x400>; - interrupt-parent = <&gic>; interrupts = ; }; }; diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c index f961c46453b9..3b56722dfd8a 100644 --- a/arch/arm/mach-omap2/omap-wakeupgen.c +++ b/arch/arm/mach-omap2/omap-wakeupgen.c @@ -20,11 +20,12 @@ #include #include #include +#include +#include #include #include #include #include -#include #include "omap-wakeupgen.h" #include "omap-secure.h" @@ -78,29 +79,12 @@ static inline void sar_writel(u32 val, u32 offset, u8 idx) static inline int _wakeupgen_get_irq_info(u32 irq, u32 *bit_posn, u8 *reg_index) { - unsigned int spi_irq; - - /* - * PPIs and SGIs are not supported. - */ - if (irq < OMAP44XX_IRQ_GIC_START) - return -EINVAL; - - /* - * Subtract the GIC offset. - */ - spi_irq = irq - OMAP44XX_IRQ_GIC_START; - if (spi_irq > MAX_IRQS) { - pr_err("omap wakeupGen: Invalid IRQ%d\n", irq); - return -EINVAL; - } - /* * Each WakeupGen register controls 32 interrupt. * i.e. 1 bit per SPI IRQ */ - *reg_index = spi_irq >> 5; - *bit_posn = spi_irq %= 32; + *reg_index = irq >> 5; + *bit_posn = irq %= 32; return 0; } @@ -141,6 +125,7 @@ static void wakeupgen_mask(struct irq_data *d) raw_spin_lock_irqsave(&wakeupgen_lock, flags); _wakeupgen_clear(d->hwirq, irq_target_cpu[d->hwirq]); raw_spin_unlock_irqrestore(&wakeupgen_lock, flags); + irq_chip_mask_parent(d); } /* @@ -153,6 +138,7 @@ static void wakeupgen_unmask(struct irq_data *d) raw_spin_lock_irqsave(&wakeupgen_lock, flags); _wakeupgen_set(d->hwirq, irq_target_cpu[d->hwirq]); raw_spin_unlock_irqrestore(&wakeupgen_lock, flags); + irq_chip_unmask_parent(d); } #ifdef CONFIG_HOTPLUG_CPU @@ -400,15 +386,91 @@ int omap_secure_apis_support(void) return omap_secure_apis; } +static struct irq_chip wakeupgen_chip = { + .name = "WUGEN", + .irq_eoi = irq_chip_eoi_parent, + .irq_mask = wakeupgen_mask, + .irq_unmask = wakeupgen_unmask, + .irq_retrigger = irq_chip_retrigger_hierarchy, + .flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND, +#ifdef CONFIG_SMP + .irq_set_affinity = irq_chip_set_affinity_parent, +#endif +}; + +static int wakeupgen_domain_xlate(struct irq_domain *domain, + struct device_node *controller, + const u32 *intspec, + unsigned int intsize, + unsigned long *out_hwirq, + unsigned int *out_type) +{ + if (domain->of_node != controller) + return -EINVAL; /* Shouldn't happen, really... */ + if (intsize != 3) + return -EINVAL; /* Not GIC compliant */ + if (intspec[0] != 0) + return -EINVAL; /* No PPI should point to this domain */ + + *out_hwirq = intspec[1]; + *out_type = intspec[2]; + return 0; +} + +static int wakeupgen_domain_alloc(struct irq_domain *domain, + unsigned int virq, + unsigned int nr_irqs, void *data) +{ + struct of_phandle_args *args = data; + struct of_phandle_args parent_args; + irq_hw_number_t hwirq; + int i; + + if (args->args_count != 3) + return -EINVAL; /* Not GIC compliant */ + if (args->args[0] != 0) + return -EINVAL; /* No PPI should point to this domain */ + + hwirq = args->args[1]; + if (hwirq >= MAX_IRQS) + return -EINVAL; /* Can't deal with this */ + + for (i = 0; i < nr_irqs; i++) + irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i, + &wakeupgen_chip, NULL); + + parent_args = *args; + parent_args.np = domain->parent->of_node; + return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &parent_args); +} + +static struct irq_domain_ops wakeupgen_domain_ops = { + .xlate = wakeupgen_domain_xlate, + .alloc = wakeupgen_domain_alloc, + .free = irq_domain_free_irqs_common, +}; + /* * Initialise the wakeupgen module. */ -int __init omap_wakeupgen_init(void) +static int __init wakeupgen_init(struct device_node *node, + struct device_node *parent) { + struct irq_domain *parent_domain, *domain; int i; unsigned int boot_cpu = smp_processor_id(); u32 val; + if (!parent) { + pr_err("%s: no parent, giving up\n", node->full_name); + return -ENODEV; + } + + parent_domain = irq_find_host(parent); + if (!parent_domain) { + pr_err("%s: unable to obtain parent domain\n", node->full_name); + return -ENXIO; + } /* Not supported on OMAP4 ES1.0 silicon */ if (omap_rev() == OMAP4430_REV_ES1_0) { WARN(1, "WakeupGen: Not supported on OMAP4430 ES1.0\n"); @@ -416,7 +478,7 @@ int __init omap_wakeupgen_init(void) } /* Static mapping, never released */ - wakeupgen_base = ioremap(OMAP_WKUPGEN_BASE, SZ_4K); + wakeupgen_base = of_iomap(node, 0); if (WARN_ON(!wakeupgen_base)) return -ENOMEM; @@ -429,6 +491,14 @@ int __init omap_wakeupgen_init(void) max_irqs = AM43XX_IRQS; } + domain = irq_domain_add_hierarchy(parent_domain, 0, max_irqs, + node, &wakeupgen_domain_ops, + NULL); + if (!domain) { + iounmap(wakeupgen_base); + return -ENOMEM; + } + /* Clear all IRQ bitmasks at wakeupGen level */ for (i = 0; i < irq_banks; i++) { wakeupgen_writel(0, i, CPU0_ID); @@ -436,14 +506,6 @@ int __init omap_wakeupgen_init(void) wakeupgen_writel(0, i, CPU1_ID); } - /* - * Override GIC architecture specific functions to add - * OMAP WakeupGen interrupt controller along with GIC - */ - gic_arch_extn.irq_mask = wakeupgen_mask; - gic_arch_extn.irq_unmask = wakeupgen_unmask; - gic_arch_extn.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE; - /* * FIXME: Add support to set_smp_affinity() once the core * GIC code has necessary hooks in place. @@ -474,3 +536,9 @@ int __init omap_wakeupgen_init(void) return 0; } + +/* + * We cannot use the IRQCHIP_DECLARE macro that lives in + * drivers/irqchip, so we're forced to roll our own. Not very nice. + */ +OF_DECLARE_2(irqchip, ti_wakeupgen, "ti,omap4-wugen-mpu", wakeupgen_init); diff --git a/arch/arm/mach-omap2/omap-wakeupgen.h b/arch/arm/mach-omap2/omap-wakeupgen.h index b3c8eccfae79..a3491ad12368 100644 --- a/arch/arm/mach-omap2/omap-wakeupgen.h +++ b/arch/arm/mach-omap2/omap-wakeupgen.h @@ -33,7 +33,6 @@ #define OMAP_TIMESTAMPCYCLELO 0xc08 #define OMAP_TIMESTAMPCYCLEHI 0xc0c -extern int __init omap_wakeupgen_init(void); extern void __iomem *omap_get_wakeupgen_base(void); extern int omap_secure_apis_support(void); #endif diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c index cf7aafb27fd1..7bb116a6f86f 100644 --- a/arch/arm/mach-omap2/omap4-common.c +++ b/arch/arm/mach-omap2/omap4-common.c @@ -241,26 +241,26 @@ static int __init omap4_sar_ram_init(void) } omap_early_initcall(omap4_sar_ram_init); -static const struct of_device_id gic_match[] = { - { .compatible = "arm,cortex-a9-gic", }, - { .compatible = "arm,cortex-a15-gic", }, +static const struct of_device_id intc_match[] = { + { .compatible = "ti,omap4-wugen-mpu", }, + { .compatible = "ti,omap5-wugen-mpu", }, { }, }; -static struct device_node *gic_node; +static struct device_node *intc_node; unsigned int omap4_xlate_irq(unsigned int hwirq) { struct of_phandle_args irq_data; unsigned int irq; - if (!gic_node) - gic_node = of_find_matching_node(NULL, gic_match); + if (!intc_node) + intc_node = of_find_matching_node(NULL, intc_match); - if (WARN_ON(!gic_node)) + if (WARN_ON(!intc_node)) return hwirq; - irq_data.np = gic_node; + irq_data.np = intc_node; irq_data.args_count = 3; irq_data.args[0] = 0; irq_data.args[1] = hwirq - OMAP44XX_IRQ_GIC_START; @@ -277,6 +277,12 @@ void __init omap_gic_of_init(void) { struct device_node *np; + intc_node = of_find_matching_node(NULL, intc_match); + if (WARN_ON(!intc_node)) { + pr_err("No WUGEN found in DT, system will misbehave.\n"); + pr_err("UPDATE YOUR DEVICE TREE!\n"); + } + /* Extract GIC distributor and TWD bases for OMAP4460 ROM Errata WA */ if (!cpu_is_omap446x()) goto skip_errata_init; @@ -290,6 +296,5 @@ void __init omap_gic_of_init(void) WARN_ON(!twd_base); skip_errata_init: - omap_wakeupgen_init(); irqchip_init(); } -- cgit v1.2.3 From 8b283c025443e4c3a3323c92777f422fa504caa5 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 11 Mar 2015 15:44:52 +0000 Subject: ARM: exynos4/5: convert pmu wakeup to stacked domains Exynos has been (ab)using the gic_arch_extn to provide wakeup from suspend, and it makes a lot of sense to convert this code to use stacked domains instead. This patch does just this, updating the DT files to actually reflect what the HW provides. BIG FAT WARNING: because the DTs were so far lying by not exposing the fact that the PMU block is actually the first interrupt controller in the chain for RTC, kernels with this patch applied wont have any suspend-resume facility when booted with old DTs, and old kernels with updated DTs may not even boot. Also, I strongly suspect that there is more than two wake-up interrupts on these platforms, but I leave it to the maintainers to fix their mess. Signed-off-by: Marc Zyngier Link: https://lkml.kernel.org/r/1426088693-15724-2-git-send-email-marc.zyngier@arm.com [ jac: squash in maz's fixup from https://lkml.kernel.org/r/5506989D.9050703@arm.com ] Signed-off-by: Jason Cooper --- arch/arm/boot/dts/exynos3250.dtsi | 4 ++ arch/arm/boot/dts/exynos4.dtsi | 4 ++ arch/arm/boot/dts/exynos5250.dtsi | 4 ++ arch/arm/boot/dts/exynos5420.dtsi | 4 ++ arch/arm/mach-exynos/exynos.c | 15 ++--- arch/arm/mach-exynos/suspend.c | 135 ++++++++++++++++++++++++++++++++++---- 6 files changed, 144 insertions(+), 22 deletions(-) (limited to 'arch/arm/boot') diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi index 277b48b0b6f9..580b21095eab 100644 --- a/arch/arm/boot/dts/exynos3250.dtsi +++ b/arch/arm/boot/dts/exynos3250.dtsi @@ -130,6 +130,9 @@ pmu_system_controller: system-controller@10020000 { compatible = "samsung,exynos3250-pmu", "syscon"; reg = <0x10020000 0x4000>; + interrupt-controller; + #interrupt-cells = <3>; + interrupt-parent = <&gic>; }; mipi_phy: video-phy@10020710 { @@ -184,6 +187,7 @@ compatible = "samsung,exynos3250-rtc"; reg = <0x10070000 0x100>; interrupts = <0 73 0>, <0 74 0>; + interrupt-parent = <&pmu_system_controller>; status = "disabled"; }; diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi index 76173cacd450..1d21f0272390 100644 --- a/arch/arm/boot/dts/exynos4.dtsi +++ b/arch/arm/boot/dts/exynos4.dtsi @@ -152,6 +152,9 @@ pmu_system_controller: system-controller@10020000 { compatible = "samsung,exynos4210-pmu", "syscon"; reg = <0x10020000 0x4000>; + interrupt-controller; + #interrupt-cells = <3>; + interrupt-parent = <&gic>; }; dsi_0: dsi@11C80000 { @@ -264,6 +267,7 @@ rtc@10070000 { compatible = "samsung,s3c6410-rtc"; reg = <0x10070000 0x100>; + interrupt-parent = <&pmu_system_controller>; interrupts = <0 44 0>, <0 45 0>; clocks = <&clock CLK_RTC>; clock-names = "rtc"; diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index 9bb1b0b738f5..72fa2d196629 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -196,6 +196,9 @@ clock-names = "clkout16"; clocks = <&clock CLK_FIN_PLL>; #clock-cells = <1>; + interrupt-controller; + #interrupt-cells = <3>; + interrupt-parent = <&gic>; }; sysreg_system_controller: syscon@10050000 { @@ -232,6 +235,7 @@ rtc: rtc@101E0000 { clocks = <&clock CLK_RTC>; clock-names = "rtc"; + interrupt-parent = <&pmu_system_controller>; status = "disabled"; }; diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi index 9dc2e9773b30..d11a6ab4ecd2 100644 --- a/arch/arm/boot/dts/exynos5420.dtsi +++ b/arch/arm/boot/dts/exynos5420.dtsi @@ -327,6 +327,7 @@ rtc: rtc@101E0000 { clocks = <&clock CLK_RTC>; clock-names = "rtc"; + interrupt-parent = <&pmu_system_controller>; status = "disabled"; }; @@ -769,6 +770,9 @@ clock-names = "clkout16"; clocks = <&clock CLK_FIN_PLL>; #clock-cells = <1>; + interrupt-controller; + #interrupt-cells = <3>; + interrupt-parent = <&gic>; }; sysreg_system_controller: syscon@10050000 { diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 9e9dfdfad9d7..f44c2e05c82e 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -166,16 +166,14 @@ static void __init exynos_init_io(void) exynos_map_io(); } +/* + * Apparently, these SoCs are not able to wake-up from suspend using + * the PMU. Too bad. Should they suddenly become capable of such a + * feat, the matches below should be moved to suspend.c. + */ static const struct of_device_id exynos_dt_pmu_match[] = { - { .compatible = "samsung,exynos3250-pmu" }, - { .compatible = "samsung,exynos4210-pmu" }, - { .compatible = "samsung,exynos4212-pmu" }, - { .compatible = "samsung,exynos4412-pmu" }, - { .compatible = "samsung,exynos4415-pmu" }, - { .compatible = "samsung,exynos5250-pmu" }, { .compatible = "samsung,exynos5260-pmu" }, { .compatible = "samsung,exynos5410-pmu" }, - { .compatible = "samsung,exynos5420-pmu" }, { /*sentinel*/ }, }; @@ -186,9 +184,6 @@ static void exynos_map_pmu(void) np = of_find_matching_node(NULL, exynos_dt_pmu_match); if (np) pmu_base_addr = of_iomap(np, 0); - - if (!pmu_base_addr) - panic("failed to find exynos pmu register\n"); } static void __init exynos_init_irq(void) diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c index 52e2b1a2fddb..7b09e7631245 100644 --- a/arch/arm/mach-exynos/suspend.c +++ b/arch/arm/mach-exynos/suspend.c @@ -18,7 +18,9 @@ #include #include #include -#include +#include +#include +#include #include #include @@ -43,8 +45,8 @@ #define EXYNOS5420_CPU_STATE 0x28 /** - * struct exynos_wkup_irq - Exynos GIC to PMU IRQ mapping - * @hwirq: Hardware IRQ signal of the GIC + * struct exynos_wkup_irq - PMU IRQ to mask mapping + * @hwirq: Hardware IRQ signal of the PMU * @mask: Mask in PMU wake-up mask register */ struct exynos_wkup_irq { @@ -93,14 +95,14 @@ static const struct exynos_wkup_irq exynos3250_wkup_irq[] = { }; static const struct exynos_wkup_irq exynos4_wkup_irq[] = { - { 76, BIT(1) }, /* RTC alarm */ - { 77, BIT(2) }, /* RTC tick */ + { 44, BIT(1) }, /* RTC alarm */ + { 45, BIT(2) }, /* RTC tick */ { /* sentinel */ }, }; static const struct exynos_wkup_irq exynos5250_wkup_irq[] = { - { 75, BIT(1) }, /* RTC alarm */ - { 76, BIT(2) }, /* RTC tick */ + { 43, BIT(1) }, /* RTC alarm */ + { 44, BIT(2) }, /* RTC tick */ { /* sentinel */ }, }; @@ -167,6 +169,113 @@ static int exynos_irq_set_wake(struct irq_data *data, unsigned int state) return -ENOENT; } +static struct irq_chip exynos_pmu_chip = { + .name = "PMU", + .irq_eoi = irq_chip_eoi_parent, + .irq_mask = irq_chip_mask_parent, + .irq_unmask = irq_chip_unmask_parent, + .irq_retrigger = irq_chip_retrigger_hierarchy, + .irq_set_wake = exynos_irq_set_wake, +#ifdef CONFIG_SMP + .irq_set_affinity = irq_chip_set_affinity_parent, +#endif +}; + +static int exynos_pmu_domain_xlate(struct irq_domain *domain, + struct device_node *controller, + const u32 *intspec, + unsigned int intsize, + unsigned long *out_hwirq, + unsigned int *out_type) +{ + if (domain->of_node != controller) + return -EINVAL; /* Shouldn't happen, really... */ + if (intsize != 3) + return -EINVAL; /* Not GIC compliant */ + if (intspec[0] != 0) + return -EINVAL; /* No PPI should point to this domain */ + + *out_hwirq = intspec[1]; + *out_type = intspec[2]; + return 0; +} + +static int exynos_pmu_domain_alloc(struct irq_domain *domain, + unsigned int virq, + unsigned int nr_irqs, void *data) +{ + struct of_phandle_args *args = data; + struct of_phandle_args parent_args; + irq_hw_number_t hwirq; + int i; + + if (args->args_count != 3) + return -EINVAL; /* Not GIC compliant */ + if (args->args[0] != 0) + return -EINVAL; /* No PPI should point to this domain */ + + hwirq = args->args[1]; + + for (i = 0; i < nr_irqs; i++) + irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i, + &exynos_pmu_chip, NULL); + + parent_args = *args; + parent_args.np = domain->parent->of_node; + return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &parent_args); +} + +static struct irq_domain_ops exynos_pmu_domain_ops = { + .xlate = exynos_pmu_domain_xlate, + .alloc = exynos_pmu_domain_alloc, + .free = irq_domain_free_irqs_common, +}; + +static int __init exynos_pmu_irq_init(struct device_node *node, + struct device_node *parent) +{ + struct irq_domain *parent_domain, *domain; + + if (!parent) { + pr_err("%s: no parent, giving up\n", node->full_name); + return -ENODEV; + } + + parent_domain = irq_find_host(parent); + if (!parent_domain) { + pr_err("%s: unable to obtain parent domain\n", node->full_name); + return -ENXIO; + } + + pmu_base_addr = of_iomap(node, 0); + + if (!pmu_base_addr) { + pr_err("%s: failed to find exynos pmu register\n", + node->full_name); + return -ENOMEM; + } + + domain = irq_domain_add_hierarchy(parent_domain, 0, 0, + node, &exynos_pmu_domain_ops, + NULL); + if (!domain) { + iounmap(pmu_base_addr); + return -ENOMEM; + } + + return 0; +} + +#define EXYNOS_PMU_IRQ(symbol, name) OF_DECLARE_2(irqchip, symbol, name, exynos_pmu_irq_init) + +EXYNOS_PMU_IRQ(exynos3250_pmu_irq, "samsung,exynos3250-pmu"); +EXYNOS_PMU_IRQ(exynos4210_pmu_irq, "samsung,exynos4210-pmu"); +EXYNOS_PMU_IRQ(exynos4212_pmu_irq, "samsung,exynos4212-pmu"); +EXYNOS_PMU_IRQ(exynos4412_pmu_irq, "samsung,exynos4412-pmu"); +EXYNOS_PMU_IRQ(exynos4415_pmu_irq, "samsung,exynos4415-pmu"); +EXYNOS_PMU_IRQ(exynos5250_pmu_irq, "samsung,exynos5250-pmu"); +EXYNOS_PMU_IRQ(exynos5420_pmu_irq, "samsung,exynos5420-pmu"); + static int exynos_cpu_do_idle(void) { /* issue the standby signal into the pm unit. */ @@ -615,17 +724,19 @@ static struct syscore_ops exynos_pm_syscore_ops; void __init exynos_pm_init(void) { const struct of_device_id *match; + struct device_node *np; u32 tmp; - of_find_matching_node_and_match(NULL, exynos_pmu_of_device_ids, &match); - if (!match) { + np = of_find_matching_node_and_match(NULL, exynos_pmu_of_device_ids, &match); + if (!np) { pr_err("Failed to find PMU node\n"); return; } - pm_data = (struct exynos_pm_data *) match->data; - /* Platform-specific GIC callback */ - gic_arch_extn.irq_set_wake = exynos_irq_set_wake; + if (WARN_ON(!of_find_property(np, "interrupt-controller", NULL))) + pr_warn("Outdated DT detected, suspend/resume will NOT work\n"); + + pm_data = (struct exynos_pm_data *) match->data; /* All wakeup disable */ tmp = pmu_raw_readl(S5P_WAKEUP_MASK); -- cgit v1.2.3 From 0a6a78b8b3c1c1757fbeca4bbf518e44c70c9e4b Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 26 Mar 2015 09:41:33 +0000 Subject: ARM: add documentation for finding start of physical memory Occasionally, there's a question about the method we use to find the start of physical memory. Add some documentation so we don't have to keep repeating outselves on the mailing list. Signed-off-by: Russell King --- arch/arm/boot/compressed/head.S | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) (limited to 'arch/arm/boot') diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index c41a793b519c..55a353243a90 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -168,9 +168,26 @@ not_angel: .text #ifdef CONFIG_AUTO_ZRELADDR - @ determine final kernel image address + /* + * Find the start of physical memory. As we are executing + * without the MMU on, we are in the physical address space. + * We just need to get rid of any offset by aligning the + * address. + * + * This alignment is a balance between the requirements of + * different platforms - we have chosen 128MB to allow + * platforms which align the start of their physical memory + * to 128MB to use this feature, while allowing the zImage + * to be placed within the first 128MB of memory on other + * platforms. Increasing the alignment means we place + * stricter alignment requirements on the start of physical + * memory, but relaxing it means that we break people who + * are already placing their zImage in (eg) the top 64MB + * of this range. + */ mov r4, pc and r4, r4, #0xf8000000 + /* Determine final kernel image address. */ add r4, r4, #TEXT_OFFSET #else ldr r4, =zreladdr -- cgit v1.2.3 From c20611df13c3e3070607c267cf781ba8645a185e Mon Sep 17 00:00:00 2001 From: Joachim Eastwood Date: Wed, 25 Mar 2015 08:47:18 +0100 Subject: ARM: 8327/1: zImage: add support for ARMv7-M MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch makes it possible to enter zImage in Thumb mode for ARMv7-M (Cortex-M) CPUs that do not support ARM mode. The kernel entry is also made in Thumb mode. [ukl: fix spelling in commit log, return early in call_cache_fn] Signed-off-by: Joachim Eastwood Tested-by: Stefan Agner Tested-by: Ezequiel Garcia Tested-by: Chanwoo Choi Signed-off-by: Uwe Kleine-König Signed-off-by: Russell King --- arch/arm/boot/compressed/head.S | 33 +++++++++++++++++++++++++++------ arch/arm/include/asm/unified.h | 8 ++++++++ 2 files changed, 35 insertions(+), 6 deletions(-) (limited to 'arch/arm/boot') diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 55a353243a90..2c45b5709fa4 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -10,8 +10,11 @@ */ #include #include +#include + + AR_CLASS( .arch armv7-a ) + M_CLASS( .arch armv7-m ) - .arch armv7-a /* * Debugging stuff * @@ -114,7 +117,12 @@ * sort out different calling conventions */ .align - .arm @ Always enter in ARM state + /* + * Always enter in ARM state for CPUs that support the ARM ISA. + * As of today (2014) that's exactly the members of the A and R + * classes. + */ + AR_CLASS( .arm ) start: .type start,#function .rept 7 @@ -132,14 +140,15 @@ start: THUMB( .thumb ) 1: - ARM_BE8( setend be ) @ go BE8 if compiled for BE8 - mrs r9, cpsr + ARM_BE8( setend be ) @ go BE8 if compiled for BE8 + AR_CLASS( mrs r9, cpsr ) #ifdef CONFIG_ARM_VIRT_EXT bl __hyp_stub_install @ get into SVC mode, reversibly #endif mov r7, r1 @ save architecture ID mov r8, r2 @ save atags pointer +#ifndef CONFIG_CPU_V7M /* * Booting from Angel - need to enter SVC mode and disable * FIQs/IRQs (numeric definitions from angel arm.h source). @@ -155,6 +164,7 @@ not_angel: safe_svcmode_maskall r0 msr spsr_cxsf, r9 @ Save the CPU boot mode in @ SPSR +#endif /* * Note that some cache flushing and other stuff may * be needed here - is there an Angel SWI call for this? @@ -827,6 +837,16 @@ __common_mmu_cache_on: call_cache_fn: adr r12, proc_types #ifdef CONFIG_CPU_CP15 mrc p15, 0, r9, c0, c0 @ get processor ID +#elif defined(CONFIG_CPU_V7M) + /* + * On v7-M the processor id is located in the V7M_SCB_CPUID + * register, but as cache handling is IMPLEMENTATION DEFINED on + * v7-M (if existant at all) we just return early here. + * If V7M_SCB_CPUID were used the cpu ID functions (i.e. + * __armv7_mmu_cache_{on,off,flush}) would be selected which + * use cp15 registers that are not implemented on v7-M. + */ + bx lr #else ldr r9, =CONFIG_PROCESSOR_ID #endif @@ -1327,8 +1347,9 @@ __hyp_reentry_vectors: __enter_kernel: mov r0, #0 @ must be 0 - ARM( mov pc, r4 ) @ call kernel - THUMB( bx r4 ) @ entry point is always ARM + ARM( mov pc, r4 ) @ call kernel + M_CLASS( add r4, r4, #1 ) @ enter in Thumb mode for M class + THUMB( bx r4 ) @ entry point is always ARM for A/R classes reloc_code_end: diff --git a/arch/arm/include/asm/unified.h b/arch/arm/include/asm/unified.h index b88beaba6b4a..200f9a7cd623 100644 --- a/arch/arm/include/asm/unified.h +++ b/arch/arm/include/asm/unified.h @@ -24,6 +24,14 @@ .syntax unified #endif +#ifdef CONFIG_CPU_V7M +#define AR_CLASS(x...) +#define M_CLASS(x...) x +#else +#define AR_CLASS(x...) x +#define M_CLASS(x...) +#endif + #ifdef CONFIG_THUMB2_KERNEL #if __GNUC__ < 4 -- cgit v1.2.3 From 7aacad53aeb57b7ff52399f56eb6d7d4010e72e9 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Fri, 27 Mar 2015 20:43:35 +0900 Subject: kbuild: use relative path to include Makefile The "MAKEFLAGS += --include-dir=$(srctree)" line in the top Makefile allows us to do this. Signed-off-by: Masahiro Yamada Signed-off-by: Michal Marek --- arch/arm/boot/Makefile | 2 +- arch/ia64/kernel/Makefile | 2 +- scripts/Makefile.dtbinst | 2 +- scripts/Makefile.fwinst | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) (limited to 'arch/arm/boot') diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile index ec2f8065f955..9eca7aee927f 100644 --- a/arch/arm/boot/Makefile +++ b/arch/arm/boot/Makefile @@ -12,7 +12,7 @@ # ifneq ($(MACHINE),) -include $(srctree)/$(MACHINE)/Makefile.boot +include $(MACHINE)/Makefile.boot endif # Note: the following conditions must always be true: diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index 20678a9ed11a..47e8aff03591 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -51,7 +51,7 @@ obj-$(CONFIG_BINFMT_ELF) += elfcore.o CFLAGS_traps.o += -mfixed-range=f2-f5,f16-f31 # The gate DSO image is built using a special linker script. -include $(srctree)/arch/ia64/kernel/Makefile.gate +include arch/ia64/kernel/Makefile.gate # tell compiled for native CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_NATIVE diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst index 909ed7a2ac61..7cbff167341f 100644 --- a/scripts/Makefile.dtbinst +++ b/scripts/Makefile.dtbinst @@ -18,7 +18,7 @@ export dtbinst-root ?= $(obj) include include/config/auto.conf include scripts/Kbuild.include -include $(srctree)/$(obj)/Makefile +include $(obj)/Makefile PHONY += __dtbs_install_prep __dtbs_install_prep: diff --git a/scripts/Makefile.fwinst b/scripts/Makefile.fwinst index 5b698add4f31..baf5eaedb278 100644 --- a/scripts/Makefile.fwinst +++ b/scripts/Makefile.fwinst @@ -13,7 +13,7 @@ src := $(obj) -include $(objtree)/.config include scripts/Kbuild.include -include $(srctree)/$(obj)/Makefile +include $(obj)/Makefile include scripts/Makefile.host -- cgit v1.2.3 From fbea230e7884044ee2e84bb28f6879dc30e1db24 Mon Sep 17 00:00:00 2001 From: Peter Griffin Date: Mon, 30 Mar 2015 16:17:07 +0100 Subject: phy: miphy365x: Use the generic phy type constants in dt-bindings/phy/phy.h Now there are generic phy type constants declared in phy.h, migrate over to using them rather than defining our own. This change has been done as one atomic commit to be bisectable. Note: The values of the defines are the same, so there is no ABI breakage with this patch. Signed-off-by: Peter Griffin Acked-by: Rob Herring Acked-by: Lee Jones Acked-by: Maxime Coquelin Signed-off-by: Kishon Vijay Abraham I --- Documentation/devicetree/bindings/phy/phy-miphy365x.txt | 8 ++++---- arch/arm/boot/dts/stih416.dtsi | 4 ++-- drivers/phy/phy-miphy365x.c | 14 +++++++------- include/dt-bindings/phy/phy-miphy365x.h | 14 -------------- 4 files changed, 13 insertions(+), 27 deletions(-) delete mode 100644 include/dt-bindings/phy/phy-miphy365x.h (limited to 'arch/arm/boot') diff --git a/Documentation/devicetree/bindings/phy/phy-miphy365x.txt b/Documentation/devicetree/bindings/phy/phy-miphy365x.txt index 9802d5d911aa..8772900e056a 100644 --- a/Documentation/devicetree/bindings/phy/phy-miphy365x.txt +++ b/Documentation/devicetree/bindings/phy/phy-miphy365x.txt @@ -20,8 +20,8 @@ Required nodes : A sub-node is required for each channel the controller Required properties (port (child) node): - #phy-cells : Should be 1 (See second example) Cell after port phandle is device type from: - - MIPHY_TYPE_SATA - - MIPHY_TYPE_PCI + - PHY_TYPE_SATA + - PHY_TYPE_PCI - reg : Address and length of register sets for each device in "reg-names" - reg-names : The names of the register addresses corresponding to the @@ -68,10 +68,10 @@ property, containing a phandle to the phy port node and a device type. Example: -#include +#include sata0: sata@fe380000 { ... - phys = <&phy_port0 MIPHY_TYPE_SATA>; + phys = <&phy_port0 PHY_TYPE_SATA>; ... }; diff --git a/arch/arm/boot/dts/stih416.dtsi b/arch/arm/boot/dts/stih416.dtsi index ea28ebadab1a..eeb7afecbbe6 100644 --- a/arch/arm/boot/dts/stih416.dtsi +++ b/arch/arm/boot/dts/stih416.dtsi @@ -10,7 +10,7 @@ #include "stih416-clock.dtsi" #include "stih416-pinctrl.dtsi" -#include +#include #include #include / { @@ -306,7 +306,7 @@ reg = <0xfe380000 0x1000>; interrupts = ; interrupt-names = "hostc"; - phys = <&phy_port0 MIPHY_TYPE_SATA>; + phys = <&phy_port0 PHY_TYPE_SATA>; phy-names = "sata-phy"; resets = <&powerdown STIH416_SATA0_POWERDOWN>, <&softreset STIH416_SATA0_SOFTRESET>; diff --git a/drivers/phy/phy-miphy365x.c b/drivers/phy/phy-miphy365x.c index 6c80154e8bff..98bffbc0f74d 100644 --- a/drivers/phy/phy-miphy365x.c +++ b/drivers/phy/phy-miphy365x.c @@ -25,7 +25,7 @@ #include #include -#include +#include #define HFC_TIMEOUT 100 @@ -176,7 +176,7 @@ static u8 rx_tx_spd[] = { static int miphy365x_set_path(struct miphy365x_phy *miphy_phy, struct miphy365x_dev *miphy_dev) { - bool sata = (miphy_phy->type == MIPHY_TYPE_SATA); + bool sata = (miphy_phy->type == PHY_TYPE_SATA); return regmap_update_bits(miphy_dev->regmap, miphy_phy->ctrlreg, @@ -430,7 +430,7 @@ static int miphy365x_init(struct phy *phy) } /* Initialise Miphy for PCIe or SATA */ - if (miphy_phy->type == MIPHY_TYPE_PCIE) + if (miphy_phy->type == PHY_TYPE_PCIE) ret = miphy365x_init_pcie_port(miphy_phy, miphy_dev); else ret = miphy365x_init_sata_port(miphy_phy, miphy_dev); @@ -454,8 +454,8 @@ int miphy365x_get_addr(struct device *dev, struct miphy365x_phy *miphy_phy, return ret; } - if (!((!strncmp(name, "sata", 4) && type == MIPHY_TYPE_SATA) || - (!strncmp(name, "pcie", 4) && type == MIPHY_TYPE_PCIE))) + if (!((!strncmp(name, "sata", 4) && type == PHY_TYPE_SATA) || + (!strncmp(name, "pcie", 4) && type == PHY_TYPE_PCIE))) return 0; miphy_phy->base = of_iomap(phynode, index); @@ -498,8 +498,8 @@ static struct phy *miphy365x_xlate(struct device *dev, miphy_phy->type = args->args[0]; - if (!(miphy_phy->type == MIPHY_TYPE_SATA || - miphy_phy->type == MIPHY_TYPE_PCIE)) { + if (!(miphy_phy->type == PHY_TYPE_SATA || + miphy_phy->type == PHY_TYPE_PCIE)) { dev_err(dev, "Unsupported device type: %d\n", miphy_phy->type); return ERR_PTR(-EINVAL); } diff --git a/include/dt-bindings/phy/phy-miphy365x.h b/include/dt-bindings/phy/phy-miphy365x.h deleted file mode 100644 index 8ef8aba6edd6..000000000000 --- a/include/dt-bindings/phy/phy-miphy365x.h +++ /dev/null @@ -1,14 +0,0 @@ -/* - * This header provides constants for the phy framework - * based on the STMicroelectronics MiPHY365x. - * - * Author: Lee Jones - */ -#ifndef _DT_BINDINGS_PHY_MIPHY -#define _DT_BINDINGS_PHY_MIPHY - -#define MIPHY_TYPE_SATA 1 -#define MIPHY_TYPE_PCIE 2 -#define MIPHY_TYPE_USB 3 - -#endif /* _DT_BINDINGS_PHY_MIPHY */ -- cgit v1.2.3