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-rw-r--r--drivers/base/regmap/regmap-irq.c81
1 files changed, 53 insertions, 28 deletions
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 19db764ffa4a..e1d8fc9ef040 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -45,6 +45,27 @@ struct regmap_irq_chip_data {
bool clear_status:1;
};
+static int sub_irq_reg(struct regmap_irq_chip_data *data,
+ unsigned int base_reg, int i)
+{
+ const struct regmap_irq_chip *chip = data->chip;
+ struct regmap *map = data->map;
+ struct regmap_irq_sub_irq_map *subreg;
+ unsigned int offset;
+ int reg = 0;
+
+ if (!chip->sub_reg_offsets || !chip->not_fixed_stride) {
+ /* Assume linear mapping */
+ reg = base_reg + (i * map->reg_stride * data->irq_reg_stride);
+ } else {
+ subreg = &chip->sub_reg_offsets[i];
+ offset = subreg->offset[0];
+ reg = base_reg + offset;
+ }
+
+ return reg;
+}
+
static inline const
struct regmap_irq *irq_to_regmap_irq(struct regmap_irq_chip_data *data,
int irq)
@@ -87,8 +108,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
if (d->clear_status) {
for (i = 0; i < d->chip->num_regs; i++) {
- reg = d->chip->status_base +
- (i * map->reg_stride * d->irq_reg_stride);
+ reg = sub_irq_reg(d, d->chip->status_base, i);
ret = regmap_read(map, reg, &val);
if (ret)
@@ -108,8 +128,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
if (!d->chip->mask_base)
continue;
- reg = d->chip->mask_base +
- (i * map->reg_stride * d->irq_reg_stride);
+ reg = sub_irq_reg(d, d->chip->mask_base, i);
if (d->chip->mask_invert) {
ret = regmap_irq_update_bits(d, reg,
d->mask_buf_def[i], ~d->mask_buf[i]);
@@ -136,8 +155,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
dev_err(d->map->dev, "Failed to sync masks in %x\n",
reg);
- reg = d->chip->wake_base +
- (i * map->reg_stride * d->irq_reg_stride);
+ reg = sub_irq_reg(d, d->chip->wake_base, i);
if (d->wake_buf) {
if (d->chip->wake_invert)
ret = regmap_irq_update_bits(d, reg,
@@ -161,8 +179,8 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
* 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);
+ reg = sub_irq_reg(d, d->chip->ack_base, i);
+
/* some chips ack by write 0 */
if (d->chip->ack_invert)
ret = regmap_write(map, reg, ~d->mask_buf[i]);
@@ -187,8 +205,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
for (i = 0; i < d->chip->num_type_reg; i++) {
if (!d->type_buf_def[i])
continue;
- reg = d->chip->type_base +
- (i * map->reg_stride * d->type_reg_stride);
+ reg = sub_irq_reg(d, d->chip->type_base, i);
if (d->chip->type_invert)
ret = regmap_irq_update_bits(d, reg,
d->type_buf_def[i], ~d->type_buf[i]);
@@ -352,8 +369,15 @@ static inline int read_sub_irq_data(struct regmap_irq_chip_data *data,
for (i = 0; i < subreg->num_regs; i++) {
unsigned int offset = subreg->offset[i];
- ret = regmap_read(map, chip->status_base + offset,
- &data->status_buf[offset]);
+ if (chip->not_fixed_stride)
+ ret = regmap_read(map,
+ chip->status_base + offset,
+ &data->status_buf[b]);
+ else
+ ret = regmap_read(map,
+ chip->status_base + offset,
+ &data->status_buf[offset]);
+
if (ret)
break;
}
@@ -474,10 +498,9 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
} else {
for (i = 0; i < data->chip->num_regs; i++) {
- ret = regmap_read(map, chip->status_base +
- (i * map->reg_stride
- * data->irq_reg_stride),
- &data->status_buf[i]);
+ unsigned int reg = sub_irq_reg(data,
+ data->chip->status_base, i);
+ ret = regmap_read(map, reg, &data->status_buf[i]);
if (ret != 0) {
dev_err(map->dev,
@@ -499,8 +522,8 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
data->status_buf[i] &= ~data->mask_buf[i];
if (data->status_buf[i] && (chip->ack_base || chip->use_ack)) {
- reg = chip->ack_base +
- (i * map->reg_stride * data->irq_reg_stride);
+ reg = sub_irq_reg(data, data->chip->ack_base, i);
+
if (chip->ack_invert)
ret = regmap_write(map, reg,
~data->status_buf[i]);
@@ -605,6 +628,12 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
return -EINVAL;
}
+ if (chip->not_fixed_stride) {
+ for (i = 0; i < chip->num_regs; i++)
+ if (chip->sub_reg_offsets[i].num_regs != 1)
+ return -EINVAL;
+ }
+
if (irq_base) {
irq_base = irq_alloc_descs(irq_base, 0, chip->num_irqs, 0);
if (irq_base < 0) {
@@ -700,8 +729,8 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
if (!chip->mask_base)
continue;
- reg = chip->mask_base +
- (i * map->reg_stride * d->irq_reg_stride);
+ reg = sub_irq_reg(d, d->chip->mask_base, i);
+
if (chip->mask_invert)
ret = regmap_irq_update_bits(d, reg,
d->mask_buf[i], ~d->mask_buf[i]);
@@ -725,8 +754,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
continue;
/* Ack masked but set interrupts */
- reg = chip->status_base +
- (i * map->reg_stride * d->irq_reg_stride);
+ reg = sub_irq_reg(d, d->chip->status_base, i);
ret = regmap_read(map, reg, &d->status_buf[i]);
if (ret != 0) {
dev_err(map->dev, "Failed to read IRQ status: %d\n",
@@ -735,8 +763,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
}
if (d->status_buf[i] && (chip->ack_base || chip->use_ack)) {
- reg = chip->ack_base +
- (i * map->reg_stride * d->irq_reg_stride);
+ reg = sub_irq_reg(d, d->chip->ack_base, i);
if (chip->ack_invert)
ret = regmap_write(map, reg,
~(d->status_buf[i] & d->mask_buf[i]));
@@ -765,8 +792,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
if (d->wake_buf) {
for (i = 0; i < chip->num_regs; i++) {
d->wake_buf[i] = d->mask_buf_def[i];
- reg = chip->wake_base +
- (i * map->reg_stride * d->irq_reg_stride);
+ reg = sub_irq_reg(d, d->chip->wake_base, i);
if (chip->wake_invert)
ret = regmap_irq_update_bits(d, reg,
@@ -786,8 +812,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
if (chip->num_type_reg && !chip->type_in_mask) {
for (i = 0; i < chip->num_type_reg; ++i) {
- reg = chip->type_base +
- (i * map->reg_stride * d->type_reg_stride);
+ reg = sub_irq_reg(d, d->chip->type_base, i);
ret = regmap_read(map, reg, &d->type_buf_def[i]);
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-22 05:45:22 +0000