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regmap-irq: Refactor checks for status bulk read support 

There are several conditions that must be satisfied to support
bulk read of status registers. Move the check into a function
to avoid duplicating it in two places.

Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
Link: https://lore.kernel.org/r/20220623211420.918875-8-aidanmacdonald.0x0@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Aidan MacDonald 2022-06-23 22:14:15 +01:00 committed by Mark Brown
parent ad22b3e98f
commit f7cc5062d6
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1 changed files with 10 additions and 4 deletions
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14
drivers/base/regmap/regmap-irq.c
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@ -73,6 +73,14 @@ struct regmap_irq *irq_to_regmap_irq(struct regmap_irq_chip_data *data,
return &data->chip->irqs[irq];
}
static bool regmap_irq_can_bulk_read_status(struct regmap_irq_chip_data *data)
{
struct regmap *map = data->map;
return data->irq_reg_stride == 1 && map->reg_stride == 1 &&
!map->use_single_read;
}
static void regmap_irq_lock(struct irq_data *data)
{
struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
@ -467,8 +475,7 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
}
}
} else if (!map->use_single_read && map->reg_stride == 1 &&
data->irq_reg_stride == 1) {
} else if (regmap_irq_can_bulk_read_status(data)) {
u8 *buf8 = data->status_reg_buf;
u16 *buf16 = data->status_reg_buf;
@ -729,8 +736,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
else
d->irq_reg_stride = 1;
if (!map->use_single_read && map->reg_stride == 1 &&
d->irq_reg_stride == 1) {
if (regmap_irq_can_bulk_read_status(d)) {
d->status_reg_buf = kmalloc_array(chip->num_regs,
map->format.val_bytes,
GFP_KERNEL);