From dde286ee57704226b500cb9eb59547fec07aad3d Mon Sep 17 00:00:00 2001 From: Matti Vaittinen Date: Thu, 8 Aug 2024 15:36:28 +0300 Subject: regmap: Allow setting IRQ domain name suffix When multiple IRQ domains are created from the same device-tree node they will get the same name based on the device-tree path. This will cause a naming collision in debugFS when IRQ domain specific entries are created. The regmap-IRQ creates per instance IRQ domains. This will lead to a domain name conflict when a device which provides more than one interrupt line uses the regmap-IRQ. Add support for specifying an IRQ domain name suffix when creating a regmap-IRQ controller. Signed-off-by: Matti Vaittinen Link: https://patch.msgid.link/776bc4996969e5081bcf61b9bdb5517e537147a3.1723120028.git.mazziesaccount@gmail.com Signed-off-by: Mark Brown --- drivers/base/regmap/regmap-irq.c | 37 ++++++++++++++++++++++++++----------- 1 file changed, 26 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c index d3ec1345b5b5..a750e48a26b8 100644 --- a/drivers/base/regmap/regmap-irq.c +++ b/drivers/base/regmap/regmap-irq.c @@ -608,6 +608,30 @@ int regmap_irq_set_type_config_simple(unsigned int **buf, unsigned int type, } EXPORT_SYMBOL_GPL(regmap_irq_set_type_config_simple); +static int regmap_irq_create_domain(struct fwnode_handle *fwnode, int irq_base, + const struct regmap_irq_chip *chip, + struct regmap_irq_chip_data *d) +{ + struct irq_domain_info info = { + .fwnode = fwnode, + .size = chip->num_irqs, + .hwirq_max = chip->num_irqs, + .virq_base = irq_base, + .ops = ®map_domain_ops, + .host_data = d, + .name_suffix = chip->domain_suffix, + }; + + d->domain = irq_domain_instantiate(&info); + if (IS_ERR(d->domain)) { + dev_err(d->map->dev, "Failed to create IRQ domain\n"); + return PTR_ERR(d->domain); + } + + return 0; +} + + /** * regmap_add_irq_chip_fwnode() - Use standard regmap IRQ controller handling * @@ -856,18 +880,9 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode, } } - if (irq_base) - d->domain = irq_domain_create_legacy(fwnode, chip->num_irqs, - irq_base, 0, - ®map_domain_ops, d); - else - d->domain = irq_domain_create_linear(fwnode, chip->num_irqs, - ®map_domain_ops, d); - if (!d->domain) { - dev_err(map->dev, "Failed to create IRQ domain\n"); - ret = -ENOMEM; + ret = regmap_irq_create_domain(fwnode, irq_base, chip, d); + if (ret) goto err_alloc; - } ret = request_threaded_irq(irq, NULL, regmap_irq_thread, irq_flags | IRQF_ONESHOT, -- cgit v1.2.3