diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-3.18/061-bcma-get-IRQ-numbers-from-dt.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-3.18/061-bcma-get-IRQ-numbers-from-dt.patch | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-3.18/061-bcma-get-IRQ-numbers-from-dt.patch b/target/linux/bcm53xx/patches-3.18/061-bcma-get-IRQ-numbers-from-dt.patch new file mode 100644 index 0000000000..886f6fb9c9 --- /dev/null +++ b/target/linux/bcm53xx/patches-3.18/061-bcma-get-IRQ-numbers-from-dt.patch @@ -0,0 +1,141 @@ +From 4eb6a1fd46965ed6c3fb9327276eb53a3021eaaa Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Thu, 9 Jan 2014 19:40:14 +0100 +Subject: [PATCH 3/3] bcma: get IRQ numbers from dt + +It is not possible to auto detect the irq numbers used by the cores on +an arm SoC. If bcma was registered with device tree it will search for +some device tree nodes with the irq number and add it to the core +configuration. + +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + Documentation/devicetree/bindings/bus/bcma.txt | 21 +++++++++++ + drivers/bcma/main.c | 52 +++++++++++++++++++++++++- + 2 files changed, 72 insertions(+), 1 deletion(-) + +--- a/Documentation/devicetree/bindings/bus/bcma.txt ++++ b/Documentation/devicetree/bindings/bus/bcma.txt +@@ -8,6 +8,11 @@ Required properties: + + The cores on the AXI bus are automatically detected by bcma with the + memory ranges they are using and they get registered afterwards. ++Automatic detection of the IRQ number is not working on ++BCM47xx/BCM53xx ARM SoCs. To assign IRQ numbers to the cores, provide ++them manually through device tree. Use an interrupt-map to specify the ++IRQ used by the devices on the bus. The first address is just an index, ++because we do not have any special register. + + The top-level axi bus may contain children representing attached cores + (devices). This is needed since some hardware details can't be auto +@@ -22,6 +27,22 @@ Example: + ranges = <0x00000000 0x18000000 0x00100000>; + #address-cells = <1>; + #size-cells = <1>; ++ #interrupt-cells = <1>; ++ interrupt-map-mask = <0x000fffff 0xffff>; ++ interrupt-map = ++ /* Ethernet Controller 0 */ ++ <0x00024000 0 &gic GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>, ++ ++ /* Ethernet Controller 1 */ ++ <0x00025000 0 &gic GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>; ++ ++ /* PCIe Controller 0 */ ++ <0x00012000 0 &gic GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>, ++ <0x00012000 1 &gic GIC_SPI 127 IRQ_TYPE_LEVEL_HIGH>, ++ <0x00012000 2 &gic GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH>, ++ <0x00012000 3 &gic GIC_SPI 129 IRQ_TYPE_LEVEL_HIGH>, ++ <0x00012000 4 &gic GIC_SPI 130 IRQ_TYPE_LEVEL_HIGH>, ++ <0x00012000 5 &gic GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>; + + chipcommon { + reg = <0x00000000 0x1000>; +--- a/drivers/bcma/main.c ++++ b/drivers/bcma/main.c +@@ -11,6 +11,7 @@ + #include <linux/bcma/bcma.h> + #include <linux/slab.h> + #include <linux/of_address.h> ++#include <linux/of_irq.h> + + MODULE_DESCRIPTION("Broadcom's specific AMBA driver"); + MODULE_LICENSE("GPL"); +@@ -153,6 +154,46 @@ static struct device_node *bcma_of_find_ + return NULL; + } + ++static int bcma_of_irq_parse(struct platform_device *parent, ++ struct bcma_device *core, ++ struct of_phandle_args *out_irq, int num) ++{ ++ __be32 laddr[1]; ++ int rc; ++ ++ if (core->dev.of_node) { ++ rc = of_irq_parse_one(core->dev.of_node, num, out_irq); ++ if (!rc) ++ return rc; ++ } ++ ++ out_irq->np = parent->dev.of_node; ++ out_irq->args_count = 1; ++ out_irq->args[0] = num; ++ ++ laddr[0] = cpu_to_be32(core->addr); ++ return of_irq_parse_raw(laddr, out_irq); ++} ++ ++static unsigned int bcma_of_get_irq(struct platform_device *parent, ++ struct bcma_device *core, int num) ++{ ++ struct of_phandle_args out_irq; ++ int ret; ++ ++ if (!parent || !parent->dev.of_node) ++ return 0; ++ ++ ret = bcma_of_irq_parse(parent, core, &out_irq, num); ++ if (ret) { ++ bcma_debug(core->bus, "bcma_of_get_irq() failed with rc=%d\n", ++ ret); ++ return 0; ++ } ++ ++ return irq_create_of_mapping(&out_irq); ++} ++ + static void bcma_of_fill_device(struct platform_device *parent, + struct bcma_device *core) + { +@@ -161,12 +202,19 @@ static void bcma_of_fill_device(struct p + node = bcma_of_find_child_device(parent, core); + if (node) + core->dev.of_node = node; ++ ++ core->irq = bcma_of_get_irq(parent, core, 0); + } + #else + static void bcma_of_fill_device(struct platform_device *parent, + struct bcma_device *core) + { + } ++static inline unsigned int bcma_of_get_irq(struct platform_device *parent, ++ struct bcma_device *core, int num) ++{ ++ return 0; ++} + #endif /* CONFIG_OF */ + + unsigned int bcma_core_irq(struct bcma_device *core, int num) +@@ -182,7 +230,9 @@ unsigned int bcma_core_irq(struct bcma_d + mips_irq = bcma_core_mips_irq(core); + return mips_irq <= 4 ? mips_irq + 2 : 0; + } +- break; ++ if (bus->host_pdev) ++ return bcma_of_get_irq(bus->host_pdev, core, num); ++ return 0; + case BCMA_HOSTTYPE_SDIO: + return 0; + } |