diff options
| author | Jayachandran C <jchandra@broadcom.com> | 2013-12-21 12:22:29 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-01-24 22:39:50 +0100 |
| commit | 5fcbdf7cac23fd07f9de30eab760d3a5864f7330 (patch) | |
| tree | 2e851603a4d9159128e87a10d1b0dec86cf8a3f2 /arch/mips | |
| parent | MIPS: Netlogic: XLP9XX USB support (diff) | |
| download | linux-5fcbdf7cac23fd07f9de30eab760d3a5864f7330.tar.xz linux-5fcbdf7cac23fd07f9de30eab760d3a5864f7330.zip | |
MIPS: Netlogic: XLP9XX PIC OF support
Support for adding legacy IRQ domain for XLP9XX. The node id of the
PIC has to be calulated differently for XLP9XX.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6286/
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/netlogic/common/irq.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/arch/mips/netlogic/common/irq.c b/arch/mips/netlogic/common/irq.c index 8092bb320618..5afc4b7fce0f 100644 --- a/arch/mips/netlogic/common/irq.c +++ b/arch/mips/netlogic/common/irq.c @@ -274,8 +274,6 @@ asmlinkage void plat_irq_dispatch(void) } #ifdef CONFIG_OF -static struct irq_domain *xlp_pic_domain; - static const struct irq_domain_ops xlp_pic_irq_domain_ops = { .xlate = irq_domain_xlate_onetwocell, }; @@ -284,8 +282,9 @@ static int __init xlp_of_pic_init(struct device_node *node, struct device_node *parent) { const int n_picirqs = PIC_IRT_LAST_IRQ - PIC_IRQ_BASE + 1; + struct irq_domain *xlp_pic_domain; struct resource res; - int socid, ret; + int socid, ret, bus; /* we need a hack to get the PIC's SoC chip id */ ret = of_address_to_resource(node, 0, &res); @@ -293,7 +292,34 @@ static int __init xlp_of_pic_init(struct device_node *node, pr_err("PIC %s: reg property not found!\n", node->name); return -EINVAL; } - socid = (res.start >> 18) & 0x3; + + if (cpu_is_xlp9xx()) { + bus = (res.start >> 20) & 0xf; + for (socid = 0; socid < NLM_NR_NODES; socid++) { + if (!nlm_node_present(socid)) + continue; + if (nlm_get_node(socid)->socbus == bus) + break; + } + if (socid == NLM_NR_NODES) { + pr_err("PIC %s: Node mapping for bus %d not found!\n", + node->name, bus); + return -EINVAL; + } + } else { + socid = (res.start >> 18) & 0x3; + if (!nlm_node_present(socid)) { + pr_err("PIC %s: node %d does not exist!\n", + node->name, socid); + return -EINVAL; + } + } + + if (!nlm_node_present(socid)) { + pr_err("PIC %s: node %d does not exist!\n", node->name, socid); + return -EINVAL; + } + xlp_pic_domain = irq_domain_add_legacy(node, n_picirqs, nlm_irq_to_xirq(socid, PIC_IRQ_BASE), PIC_IRQ_BASE, &xlp_pic_irq_domain_ops, NULL); @@ -301,8 +327,7 @@ static int __init xlp_of_pic_init(struct device_node *node, pr_err("PIC %s: Creating legacy domain failed!\n", node->name); return -EINVAL; } - pr_info("Node %d: IRQ domain created for PIC@%pa\n", socid, - &res.start); + pr_info("Node %d: IRQ domain created for PIC@%pR\n", socid, &res); return 0; } |