summaryrefslogtreecommitdiffstats
path: root/drivers/mfd
diff options
context:
space:
mode:
authorBrian Masney <masneyb@onstation.org>2019-02-08 03:16:24 +0100
committerLinus Walleij <linus.walleij@linaro.org>2019-02-13 09:23:59 +0100
commit3324a7c1a2273e502a4f3c02a021e1d15ce2c458 (patch)
tree3b30aaab7ca6a3af0180e5ea9202db4e83cd5436 /drivers/mfd
parentgenirq: introduce irq_chip_mask_ack_parent() (diff)
downloadlinux-3324a7c1a2273e502a4f3c02a021e1d15ce2c458.tar.xz
linux-3324a7c1a2273e502a4f3c02a021e1d15ce2c458.zip
mfd: pm8xxx: convert to v2 irq interfaces to support hierarchical IRQ chips
Convert the PM8XXX IRQ code to use the version 2 IRQ interface in order to support hierarchical IRQ chips. This is necessary so that ssbi-gpio can be setup as a hierarchical IRQ chip with PM8xxx as the parent. IRQ chips in device tree should be usable from the start without having to make an additional call to gpio[d]_to_irq() to get the proper IRQ on the parent. pm8821_irq_domain_ops and pm8821_irq_domain_map are removed by this patch since the irq_chip is now contained in the pm_irq_data struct, and that allows us to use a common IRQ mapping function. This change was tested on an APQ8060 DragonBoard. Signed-off-by: Brian Masney <masneyb@onstation.org> Tested-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/qcom-pm8xxx.c75
1 files changed, 38 insertions, 37 deletions
diff --git a/drivers/mfd/qcom-pm8xxx.c b/drivers/mfd/qcom-pm8xxx.c
index e6e8d81c15fd..8eb2528793f9 100644
--- a/drivers/mfd/qcom-pm8xxx.c
+++ b/drivers/mfd/qcom-pm8xxx.c
@@ -70,22 +70,23 @@
#define PM8XXX_NR_IRQS 256
#define PM8821_NR_IRQS 112
+struct pm_irq_data {
+ int num_irqs;
+ struct irq_chip *irq_chip;
+ void (*irq_handler)(struct irq_desc *desc);
+};
+
struct pm_irq_chip {
struct regmap *regmap;
spinlock_t pm_irq_lock;
struct irq_domain *irqdomain;
- unsigned int num_irqs;
unsigned int num_blocks;
unsigned int num_masters;
+ const struct pm_irq_data *pm_irq_data;
+ /* MUST BE AT THE END OF THIS STRUCT */
u8 config[0];
};
-struct pm_irq_data {
- int num_irqs;
- const struct irq_domain_ops *irq_domain_ops;
- void (*irq_handler)(struct irq_desc *desc);
-};
-
static int pm8xxx_read_block_irq(struct pm_irq_chip *chip, unsigned int bp,
unsigned int *ip)
{
@@ -375,21 +376,38 @@ static struct irq_chip pm8xxx_irq_chip = {
.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
};
-static int pm8xxx_irq_domain_map(struct irq_domain *d, unsigned int irq,
- irq_hw_number_t hwirq)
+static void pm8xxx_irq_domain_map(struct pm_irq_chip *chip,
+ struct irq_domain *domain, unsigned int irq,
+ irq_hw_number_t hwirq, unsigned int type)
{
- struct pm_irq_chip *chip = d->host_data;
-
- irq_set_chip_and_handler(irq, &pm8xxx_irq_chip, handle_level_irq);
- irq_set_chip_data(irq, chip);
+ irq_domain_set_info(domain, irq, hwirq, chip->pm_irq_data->irq_chip,
+ chip, handle_level_irq, NULL, NULL);
irq_set_noprobe(irq);
+}
+
+static int pm8xxx_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
+ unsigned int nr_irqs, void *data)
+{
+ struct pm_irq_chip *chip = domain->host_data;
+ struct irq_fwspec *fwspec = data;
+ irq_hw_number_t hwirq;
+ unsigned int type;
+ int ret, i;
+
+ ret = irq_domain_translate_twocell(domain, fwspec, &hwirq, &type);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < nr_irqs; i++)
+ pm8xxx_irq_domain_map(chip, domain, virq + i, hwirq + i, type);
return 0;
}
static const struct irq_domain_ops pm8xxx_irq_domain_ops = {
- .xlate = irq_domain_xlate_twocell,
- .map = pm8xxx_irq_domain_map,
+ .alloc = pm8xxx_irq_domain_alloc,
+ .free = irq_domain_free_irqs_common,
+ .translate = irq_domain_translate_twocell,
};
static void pm8821_irq_mask_ack(struct irq_data *d)
@@ -473,23 +491,6 @@ static struct irq_chip pm8821_irq_chip = {
.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
};
-static int pm8821_irq_domain_map(struct irq_domain *d, unsigned int irq,
- irq_hw_number_t hwirq)
-{
- struct pm_irq_chip *chip = d->host_data;
-
- irq_set_chip_and_handler(irq, &pm8821_irq_chip, handle_level_irq);
- irq_set_chip_data(irq, chip);
- irq_set_noprobe(irq);
-
- return 0;
-}
-
-static const struct irq_domain_ops pm8821_irq_domain_ops = {
- .xlate = irq_domain_xlate_twocell,
- .map = pm8821_irq_domain_map,
-};
-
static const struct regmap_config ssbi_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
@@ -501,13 +502,13 @@ static const struct regmap_config ssbi_regmap_config = {
static const struct pm_irq_data pm8xxx_data = {
.num_irqs = PM8XXX_NR_IRQS,
- .irq_domain_ops = &pm8xxx_irq_domain_ops,
+ .irq_chip = &pm8xxx_irq_chip,
.irq_handler = pm8xxx_irq_handler,
};
static const struct pm_irq_data pm8821_data = {
.num_irqs = PM8821_NR_IRQS,
- .irq_domain_ops = &pm8821_irq_domain_ops,
+ .irq_chip = &pm8821_irq_chip,
.irq_handler = pm8821_irq_handler,
};
@@ -571,14 +572,14 @@ static int pm8xxx_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, chip);
chip->regmap = regmap;
- chip->num_irqs = data->num_irqs;
- chip->num_blocks = DIV_ROUND_UP(chip->num_irqs, 8);
+ chip->num_blocks = DIV_ROUND_UP(data->num_irqs, 8);
chip->num_masters = DIV_ROUND_UP(chip->num_blocks, 8);
+ chip->pm_irq_data = data;
spin_lock_init(&chip->pm_irq_lock);
chip->irqdomain = irq_domain_add_linear(pdev->dev.of_node,
data->num_irqs,
- data->irq_domain_ops,
+ &pm8xxx_irq_domain_ops,
chip);
if (!chip->irqdomain)
return -ENODEV;