diff options
Diffstat (limited to 'drivers/mfd/tps6586x.c')
| -rw-r--r-- | drivers/mfd/tps6586x.c | 103 |
1 files changed, 77 insertions, 26 deletions
diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c index 87ba7ada3bbc..721b9186a5d1 100644 --- a/drivers/mfd/tps6586x.c +++ b/drivers/mfd/tps6586x.c @@ -17,12 +17,14 @@ #include <linux/interrupt.h> #include <linux/irq.h> +#include <linux/irqdomain.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/i2c.h> +#include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/mfd/core.h> @@ -92,6 +94,14 @@ static const struct tps6586x_irq_data tps6586x_irqs[] = { [TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1), }; +static struct resource tps6586x_rtc_resources[] = { + { + .start = TPS6586X_INT_RTC_ALM1, + .end = TPS6586X_INT_RTC_ALM1, + .flags = IORESOURCE_IRQ, + }, +}; + static struct mfd_cell tps6586x_cell[] = { { .name = "tps6586x-gpio", @@ -101,6 +111,8 @@ static struct mfd_cell tps6586x_cell[] = { }, { .name = "tps6586x-rtc", + .num_resources = ARRAY_SIZE(tps6586x_rtc_resources), + .resources = &tps6586x_rtc_resources[0], }, { .name = "tps6586x-onkey", @@ -117,6 +129,7 @@ struct tps6586x { int irq_base; u32 irq_en; u8 mask_reg[5]; + struct irq_domain *irq_domain; }; static inline struct tps6586x *dev_to_tps6586x(struct device *dev) @@ -185,6 +198,14 @@ int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask) } EXPORT_SYMBOL_GPL(tps6586x_update); +int tps6586x_irq_get_virq(struct device *dev, int irq) +{ + struct tps6586x *tps6586x = dev_to_tps6586x(dev); + + return irq_create_mapping(tps6586x->irq_domain, irq); +} +EXPORT_SYMBOL_GPL(tps6586x_irq_get_virq); + static int __remove_subdev(struct device *dev, void *unused) { platform_device_unregister(to_platform_device(dev)); @@ -206,7 +227,7 @@ static void tps6586x_irq_lock(struct irq_data *data) static void tps6586x_irq_enable(struct irq_data *irq_data) { struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data); - unsigned int __irq = irq_data->irq - tps6586x->irq_base; + unsigned int __irq = irq_data->hwirq; const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq]; tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask; @@ -217,7 +238,7 @@ static void tps6586x_irq_disable(struct irq_data *irq_data) { struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data); - unsigned int __irq = irq_data->irq - tps6586x->irq_base; + unsigned int __irq = irq_data->hwirq; const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq]; tps6586x->mask_reg[data->mask_reg] |= data->mask_mask; @@ -240,6 +261,39 @@ static void tps6586x_irq_sync_unlock(struct irq_data *data) mutex_unlock(&tps6586x->irq_lock); } +static struct irq_chip tps6586x_irq_chip = { + .name = "tps6586x", + .irq_bus_lock = tps6586x_irq_lock, + .irq_bus_sync_unlock = tps6586x_irq_sync_unlock, + .irq_disable = tps6586x_irq_disable, + .irq_enable = tps6586x_irq_enable, +}; + +static int tps6586x_irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + struct tps6586x *tps6586x = h->host_data; + + irq_set_chip_data(virq, tps6586x); + irq_set_chip_and_handler(virq, &tps6586x_irq_chip, handle_simple_irq); + irq_set_nested_thread(virq, 1); + + /* ARM needs us to explicitly flag the IRQ as valid + * and will set them noprobe when we do so. */ +#ifdef CONFIG_ARM + set_irq_flags(virq, IRQF_VALID); +#else + irq_set_noprobe(virq); +#endif + + return 0; +} + +static struct irq_domain_ops tps6586x_domain_ops = { + .map = tps6586x_irq_map, + .xlate = irq_domain_xlate_twocell, +}; + static irqreturn_t tps6586x_irq(int irq, void *data) { struct tps6586x *tps6586x = data; @@ -260,7 +314,8 @@ static irqreturn_t tps6586x_irq(int irq, void *data) int i = __ffs(acks); if (tps6586x->irq_en & (1 << i)) - handle_nested_irq(tps6586x->irq_base + i); + handle_nested_irq( + irq_find_mapping(tps6586x->irq_domain, i)); acks &= ~(1 << i); } @@ -273,11 +328,8 @@ static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq, { int i, ret; u8 tmp[4]; - - if (!irq_base) { - dev_warn(tps6586x->dev, "No interrupt support on IRQ base\n"); - return -EINVAL; - } + int new_irq_base; + int irq_num = ARRAY_SIZE(tps6586x_irqs); mutex_init(&tps6586x->irq_lock); for (i = 0; i < 5; i++) { @@ -287,25 +339,24 @@ static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq, tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp); - tps6586x->irq_base = irq_base; - - tps6586x->irq_chip.name = "tps6586x"; - tps6586x->irq_chip.irq_enable = tps6586x_irq_enable; - tps6586x->irq_chip.irq_disable = tps6586x_irq_disable; - tps6586x->irq_chip.irq_bus_lock = tps6586x_irq_lock; - tps6586x->irq_chip.irq_bus_sync_unlock = tps6586x_irq_sync_unlock; - - for (i = 0; i < ARRAY_SIZE(tps6586x_irqs); i++) { - int __irq = i + tps6586x->irq_base; - irq_set_chip_data(__irq, tps6586x); - irq_set_chip_and_handler(__irq, &tps6586x->irq_chip, - handle_simple_irq); - irq_set_nested_thread(__irq, 1); -#ifdef CONFIG_ARM - set_irq_flags(__irq, IRQF_VALID); -#endif + if (irq_base > 0) { + new_irq_base = irq_alloc_descs(irq_base, 0, irq_num, -1); + if (new_irq_base < 0) { + dev_err(tps6586x->dev, + "Failed to alloc IRQs: %d\n", new_irq_base); + return new_irq_base; + } + } else { + new_irq_base = 0; } + tps6586x->irq_domain = irq_domain_add_simple(tps6586x->dev->of_node, + irq_num, new_irq_base, &tps6586x_domain_ops, + tps6586x); + if (!tps6586x->irq_domain) { + dev_err(tps6586x->dev, "Failed to create IRQ domain\n"); + return -ENOMEM; + } ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT, "tps6586x", tps6586x); @@ -461,7 +512,7 @@ static int tps6586x_i2c_probe(struct i2c_client *client, ret = mfd_add_devices(tps6586x->dev, -1, tps6586x_cell, ARRAY_SIZE(tps6586x_cell), - NULL, 0, NULL); + NULL, 0, tps6586x->irq_domain); if (ret < 0) { dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret); goto err_mfd_add; |