diff options
Diffstat (limited to 'kernel/drivers/base/regmap/regmap-irq.c')
| -rw-r--r-- | kernel/drivers/base/regmap/regmap-irq.c | 58 |
1 files changed, 42 insertions, 16 deletions
diff --git a/kernel/drivers/base/regmap/regmap-irq.c b/kernel/drivers/base/regmap/regmap-irq.c index a6c3f75b4..8d16db533 100644 --- a/kernel/drivers/base/regmap/regmap-irq.c +++ b/kernel/drivers/base/regmap/regmap-irq.c @@ -63,6 +63,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data) struct regmap *map = d->map; int i, ret; u32 reg; + u32 unmask_offset; if (d->chip->runtime_pm) { ret = pm_runtime_get_sync(map->dev); @@ -79,12 +80,28 @@ static void regmap_irq_sync_unlock(struct irq_data *data) for (i = 0; i < d->chip->num_regs; i++) { reg = d->chip->mask_base + (i * map->reg_stride * d->irq_reg_stride); - if (d->chip->mask_invert) + if (d->chip->mask_invert) { ret = regmap_update_bits(d->map, reg, d->mask_buf_def[i], ~d->mask_buf[i]); - else + } else if (d->chip->unmask_base) { + /* set mask with mask_base register */ + ret = regmap_update_bits(d->map, reg, + d->mask_buf_def[i], ~d->mask_buf[i]); + if (ret < 0) + dev_err(d->map->dev, + "Failed to sync unmasks in %x\n", + reg); + unmask_offset = d->chip->unmask_base - + d->chip->mask_base; + /* clear mask with unmask_base register */ + ret = regmap_update_bits(d->map, + reg + unmask_offset, + d->mask_buf_def[i], + d->mask_buf[i]); + } else { ret = regmap_update_bits(d->map, reg, d->mask_buf_def[i], d->mask_buf[i]); + } if (ret != 0) dev_err(d->map->dev, "Failed to sync masks in %x\n", reg); @@ -109,14 +126,18 @@ static void regmap_irq_sync_unlock(struct irq_data *data) if (!d->chip->init_ack_masked) continue; /* - * Ack all the masked interrupts uncondictionly, + * Ack all the masked interrupts unconditionally, * OR if there is masked interrupt which hasn't been Acked, * it'll be ignored in irq handler, then may introduce irq storm */ if (d->mask_buf[i] && (d->chip->ack_base || d->chip->use_ack)) { reg = d->chip->ack_base + (i * map->reg_stride * d->irq_reg_stride); - ret = regmap_write(map, reg, d->mask_buf[i]); + /* some chips ack by write 0 */ + if (d->chip->ack_invert) + ret = regmap_write(map, reg, ~d->mask_buf[i]); + else + ret = regmap_write(map, reg, d->mask_buf[i]); if (ret != 0) dev_err(d->map->dev, "Failed to ack 0x%x: %d\n", reg, ret); @@ -209,7 +230,7 @@ static irqreturn_t regmap_irq_thread(int irq, void *d) * Read in the statuses, using a single bulk read if possible * in order to reduce the I/O overheads. */ - if (!map->use_single_rw && map->reg_stride == 1 && + if (!map->use_single_read && map->reg_stride == 1 && data->irq_reg_stride == 1) { u8 *buf8 = data->status_reg_buf; u16 *buf16 = data->status_reg_buf; @@ -306,19 +327,12 @@ static int regmap_irq_map(struct irq_domain *h, unsigned int virq, irq_set_chip_data(virq, data); irq_set_chip(virq, &data->irq_chip); 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 regmap_domain_ops = { +static const struct irq_domain_ops regmap_domain_ops = { .map = regmap_irq_map, .xlate = irq_domain_xlate_twocell, }; @@ -346,6 +360,7 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, int i; int ret = -ENOMEM; u32 reg; + u32 unmask_offset; if (chip->num_regs <= 0) return -EINVAL; @@ -405,7 +420,7 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, else d->irq_reg_stride = 1; - if (!map->use_single_rw && map->reg_stride == 1 && + if (!map->use_single_read && map->reg_stride == 1 && d->irq_reg_stride == 1) { d->status_reg_buf = kmalloc(map->format.val_bytes * chip->num_regs, GFP_KERNEL); @@ -427,7 +442,14 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, if (chip->mask_invert) ret = regmap_update_bits(map, reg, d->mask_buf[i], ~d->mask_buf[i]); - else + else if (d->chip->unmask_base) { + unmask_offset = d->chip->unmask_base - + d->chip->mask_base; + ret = regmap_update_bits(d->map, + reg + unmask_offset, + d->mask_buf[i], + d->mask_buf[i]); + } else ret = regmap_update_bits(map, reg, d->mask_buf[i], d->mask_buf[i]); if (ret != 0) { @@ -452,7 +474,11 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, if (d->status_buf[i] && (chip->ack_base || chip->use_ack)) { reg = chip->ack_base + (i * map->reg_stride * d->irq_reg_stride); - ret = regmap_write(map, reg, + if (chip->ack_invert) + ret = regmap_write(map, reg, + ~(d->status_buf[i] & d->mask_buf[i])); + else + ret = regmap_write(map, reg, d->status_buf[i] & d->mask_buf[i]); if (ret != 0) { dev_err(map->dev, "Failed to ack 0x%x: %d\n", |