[PATCH v2 07/12] regmap-irq: Refactor checks for status bulk read support

Aidan MacDonald
2022-06-23T21:14:00Z

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>
---
drivers/base/regmap/regmap-irq.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 7e93dd8af56b..5f9a5856c45e 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -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);
--
2.35.1