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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 <tony@atomide.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1426088629-15377-8-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Marc Zyngier
Jason Cooper
parent
918d98db8c
commit
7136d457f3
@ -15,7 +15,7 @@
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/ {
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compatible = "ti,am4372", "ti,am43";
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interrupt-parent = <&gic>;
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interrupt-parent = <&wakeupgen>;
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aliases {
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@ -48,6 +48,15 @@
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#interrupt-cells = <3>;
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reg = <0x48241000 0x1000>,
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<0x48240100 0x0100>;
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interrupt-parent = <&gic>;
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};
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wakeupgen: interrupt-controller@48281000 {
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compatible = "ti,omap4-wugen-mpu";
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interrupt-controller;
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#interrupt-cells = <3>;
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reg = <0x48281000 0x1000>;
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interrupt-parent = <&gic>;
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};
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l2-cache-controller@48242000 {
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@ -352,7 +352,6 @@
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reg = <0x24>;
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compatible = "ti,tps65218";
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interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* NMIn */
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interrupt-parent = <&gic>;
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interrupt-controller;
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#interrupt-cells = <2>;
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@ -392,7 +392,6 @@
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tps@24 {
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compatible = "ti,tps65218";
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reg = <0x24>;
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interrupt-parent = <&gic>;
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interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-controller;
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#interrupt-cells = <2>;
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@ -369,7 +369,6 @@
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reg = <0x24>;
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compatible = "ti,tps65218";
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interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* NMIn */
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interrupt-parent = <&gic>;
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interrupt-controller;
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#interrupt-cells = <2>;
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@ -64,6 +64,14 @@
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interrupt-parent = <&gic>;
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};
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wakeupgen: interrupt-controller@48281000 {
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compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
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interrupt-controller;
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#interrupt-cells = <3>;
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reg = <0x48281000 0x1000>;
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interrupt-parent = <&gic>;
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};
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/*
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* The soc node represents the soc top level view. It is used for IPs
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* that are not memory mapped in the MPU view or for the MPU itself.
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@ -92,7 +100,7 @@
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reg = <0x44000000 0x1000000>,
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<0x45000000 0x1000>;
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interrupts-extended = <&crossbar_mpu GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
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<&gic GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
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<&wakeupgen GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
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prm: prm@4ae06000 {
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compatible = "ti,dra7-prm";
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@ -1341,7 +1349,7 @@
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compatible = "ti,irq-crossbar";
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reg = <0x4a002a48 0x130>;
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interrupt-controller;
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interrupt-parent = <&gic>;
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interrupt-parent = <&wakeupgen>;
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#interrupt-cells = <3>;
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ti,max-irqs = <160>;
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ti,max-crossbar-sources = <MAX_SOURCES>;
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@ -25,7 +25,7 @@
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pmu {
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compatible = "arm,cortex-a15-pmu";
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interrupt-parent = <&gic>;
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interrupt-parent = <&wakeupgen>;
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interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>;
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};
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};
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@ -41,7 +41,7 @@
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pmu {
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compatible = "arm,cortex-a15-pmu";
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interrupt-parent = <&gic>;
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interrupt-parent = <&wakeupgen>;
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interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 132 IRQ_TYPE_LEVEL_HIGH>;
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};
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@ -173,14 +173,12 @@
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twl: twl@48 {
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reg = <0x48>;
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interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_1N cascaded to gic */
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interrupt-parent = <&gic>;
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};
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twl6040: twl@4b {
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compatible = "ti,twl6040";
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reg = <0x4b>;
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interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_2N cascaded to gic */
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interrupt-parent = <&gic>;
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ti,audpwron-gpio = <&gpio6 0 GPIO_ACTIVE_HIGH>; /* gpio_160 */
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vio-supply = <&v1v8>;
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@ -372,7 +372,6 @@
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reg = <0x48>;
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/* IRQ# = 7 */
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interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_1N cascaded to gic */
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interrupt-parent = <&gic>;
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};
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twl6040: twl@4b {
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@ -384,7 +383,6 @@
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/* IRQ# = 119 */
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interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_2N cascaded to gic */
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interrupt-parent = <&gic>;
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ti,audpwron-gpio = <&gpio4 31 GPIO_ACTIVE_HIGH>; /* gpio line 127 */
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vio-supply = <&v1v8>;
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@ -479,17 +477,17 @@
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};
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&uart2 {
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interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH
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interrupts-extended = <&wakeupgen GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH
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&omap4_pmx_core OMAP4_UART2_RX>;
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};
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&uart3 {
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interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
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interrupts-extended = <&wakeupgen GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
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&omap4_pmx_core OMAP4_UART3_RX>;
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};
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&uart4 {
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interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH
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interrupts-extended = <&wakeupgen GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH
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&omap4_pmx_core OMAP4_UART4_RX>;
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};
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@ -363,7 +363,6 @@
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reg = <0x48>;
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/* SPI = 0, IRQ# = 7, 4 = active high level-sensitive */
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interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_1N cascaded to gic */
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interrupt-parent = <&gic>;
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};
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twl6040: twl@4b {
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@ -375,7 +374,6 @@
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/* SPI = 0, IRQ# = 119, 4 = active high level-sensitive */
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interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_2N cascaded to gic */
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interrupt-parent = <&gic>;
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ti,audpwron-gpio = <&gpio4 31 0>; /* gpio line 127 */
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vio-supply = <&v1v8>;
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@ -570,21 +568,21 @@
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};
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&uart2 {
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interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH
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interrupts-extended = <&wakeupgen GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH
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&omap4_pmx_core OMAP4_UART2_RX>;
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pinctrl-names = "default";
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pinctrl-0 = <&uart2_pins>;
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};
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&uart3 {
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interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
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interrupts-extended = <&wakeupgen GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
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&omap4_pmx_core OMAP4_UART3_RX>;
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pinctrl-names = "default";
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pinctrl-0 = <&uart3_pins>;
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};
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&uart4 {
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interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH
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interrupts-extended = <&wakeupgen GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH
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&omap4_pmx_core OMAP4_UART4_RX>;
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pinctrl-names = "default";
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pinctrl-0 = <&uart4_pins>;
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@ -185,7 +185,6 @@
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reg = <0x48>;
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/* SPI = 0, IRQ# = 7, 4 = active high level-sensitive */
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interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_1N cascaded to gic */
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interrupt-parent = <&gic>;
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};
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twl6040: twl@4b {
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@ -197,7 +196,6 @@
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/* SPI = 0, IRQ# = 119, 4 = active high level-sensitive */
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interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>; /* IRQ_SYS_2N cascaded to gic */
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interrupt-parent = <&gic>;
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ti,audpwron-gpio = <&gpio6 22 0>; /* gpio 182 */
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vio-supply = <&v1v8>;
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@ -14,7 +14,7 @@
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/ {
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compatible = "ti,omap4430", "ti,omap4";
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interrupt-parent = <&gic>;
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interrupt-parent = <&wakeupgen>;
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aliases {
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i2c0 = &i2c1;
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@ -56,6 +56,7 @@
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#interrupt-cells = <3>;
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reg = <0x48241000 0x1000>,
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<0x48240100 0x0100>;
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interrupt-parent = <&gic>;
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};
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L2: l2-cache-controller@48242000 {
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@ -70,6 +71,15 @@
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clocks = <&mpu_periphclk>;
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reg = <0x48240600 0x20>;
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interrupts = <GIC_PPI 13 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_HIGH)>;
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interrupt-parent = <&gic>;
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};
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wakeupgen: interrupt-controller@48281000 {
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compatible = "ti,omap4-wugen-mpu";
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interrupt-controller;
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#interrupt-cells = <3>;
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reg = <0x48281000 0x1000>;
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interrupt-parent = <&gic>;
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};
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/*
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@ -319,7 +329,7 @@
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uart2: serial@4806c000 {
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compatible = "ti,omap4-uart";
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reg = <0x4806c000 0x100>;
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interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
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interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
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ti,hwmods = "uart2";
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clock-frequency = <48000000>;
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};
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@ -327,7 +337,7 @@
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uart3: serial@48020000 {
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compatible = "ti,omap4-uart";
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reg = <0x48020000 0x100>;
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interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
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interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
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ti,hwmods = "uart3";
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clock-frequency = <48000000>;
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};
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@ -335,7 +345,7 @@
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uart4: serial@4806e000 {
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compatible = "ti,omap4-uart";
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reg = <0x4806e000 0x100>;
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interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
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interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
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ti,hwmods = "uart4";
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clock-frequency = <48000000>;
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};
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@ -412,7 +412,6 @@
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palmas: palmas@48 {
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compatible = "ti,palmas";
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interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* IRQ_SYS_1N */
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interrupt-parent = <&gic>;
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reg = <0x48>;
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interrupt-controller;
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#interrupt-cells = <2>;
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@ -311,7 +311,6 @@
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palmas: palmas@48 {
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compatible = "ti,palmas";
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interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* IRQ_SYS_1N */
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interrupt-parent = <&gic>;
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reg = <0x48>;
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interrupt-controller;
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#interrupt-cells = <2>;
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@ -521,7 +520,6 @@
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pinctrl-0 = <&twl6040_pins>;
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interrupts = <GIC_SPI 119 IRQ_TYPE_NONE>; /* IRQ_SYS_2N cascaded to gic */
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interrupt-parent = <&gic>;
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ti,audpwron-gpio = <&gpio5 13 0>; /* gpio line 141 */
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vio-supply = <&smps7_reg>;
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@ -18,7 +18,7 @@
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#size-cells = <1>;
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compatible = "ti,omap5";
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interrupt-parent = <&gic>;
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interrupt-parent = <&wakeupgen>;
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aliases {
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i2c0 = &i2c1;
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@ -79,6 +79,7 @@
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<GIC_PPI 14 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_LOW)>,
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<GIC_PPI 11 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_LOW)>,
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<GIC_PPI 10 (GIC_CPU_MASK_RAW(3) | IRQ_TYPE_LEVEL_LOW)>;
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interrupt-parent = <&gic>;
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};
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pmu {
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@ -95,6 +96,15 @@
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<0x48212000 0x1000>,
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<0x48214000 0x2000>,
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<0x48216000 0x2000>;
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interrupt-parent = <&gic>;
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};
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wakeupgen: interrupt-controller@48281000 {
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compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
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interrupt-controller;
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#interrupt-cells = <3>;
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reg = <0x48281000 0x1000>;
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interrupt-parent = <&gic>;
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};
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/*
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@ -458,7 +468,7 @@
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uart1: serial@4806a000 {
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compatible = "ti,omap4-uart";
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reg = <0x4806a000 0x100>;
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interrupts-extended = <&gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
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interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
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ti,hwmods = "uart1";
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clock-frequency = <48000000>;
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};
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@ -466,7 +476,7 @@
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uart2: serial@4806c000 {
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compatible = "ti,omap4-uart";
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reg = <0x4806c000 0x100>;
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interrupts-extended = <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
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interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
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ti,hwmods = "uart2";
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clock-frequency = <48000000>;
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};
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@ -474,7 +484,7 @@
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uart3: serial@48020000 {
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compatible = "ti,omap4-uart";
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reg = <0x48020000 0x100>;
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interrupts-extended = <&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
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interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
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ti,hwmods = "uart3";
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clock-frequency = <48000000>;
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};
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@ -482,7 +492,7 @@
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uart4: serial@4806e000 {
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compatible = "ti,omap4-uart";
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reg = <0x4806e000 0x100>;
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interrupts-extended = <&gic GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
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interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
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ti,hwmods = "uart4";
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clock-frequency = <48000000>;
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};
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@ -490,7 +500,7 @@
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uart5: serial@48066000 {
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compatible = "ti,omap4-uart";
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reg = <0x48066000 0x100>;
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interrupts-extended = <&gic GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
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interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
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ti,hwmods = "uart5";
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clock-frequency = <48000000>;
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};
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@ -498,7 +508,7 @@
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uart6: serial@48068000 {
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compatible = "ti,omap4-uart";
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reg = <0x48068000 0x100>;
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interrupts-extended = <&gic GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
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interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
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ti,hwmods = "uart6";
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clock-frequency = <48000000>;
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};
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@ -883,14 +893,12 @@
|
||||
usbhsohci: ohci@4a064800 {
|
||||
compatible = "ti,ohci-omap3";
|
||||
reg = <0x4a064800 0x400>;
|
||||
interrupt-parent = <&gic>;
|
||||
interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
|
||||
};
|
||||
|
||||
usbhsehci: ehci@4a064c00 {
|
||||
compatible = "ti,ehci-omap";
|
||||
reg = <0x4a064c00 0x400>;
|
||||
interrupt-parent = <&gic>;
|
||||
interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
|
||||
};
|
||||
};
|
||||
|
||||
@ -20,11 +20,12 @@
|
||||
#include <linux/init.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/irqdomain.h>
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/cpu.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/cpu_pm.h>
|
||||
#include <linux/irqchip/arm-gic.h>
|
||||
|
||||
#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);
|
||||
|
||||
@ -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
|
||||
|
||||
@ -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();
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user