In some SoCs we have to force clear the counter/irq clear registers as
they are not self clearing after they are written into.
sc7280 seems to be one such SoC, handle this with a quirk flag.
Signed-off-by: Rajendra Nayak <quic_rjendra@xxxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
v2: no change
drivers/soc/qcom/icc-bwmon.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/soc/qcom/icc-bwmon.c b/drivers/soc/qcom/icc-bwmon.c
index 44a10009b45e..17cba2648ae7 100644
--- a/drivers/soc/qcom/icc-bwmon.c
+++ b/drivers/soc/qcom/icc-bwmon.c
@@ -115,6 +115,7 @@
/* Quirks for specific BWMON types */
#define BWMON_HAS_GLOBAL_IRQ BIT(0)
+#define BWMON_NEEDS_FORCE_CLEAR BIT(1)
enum bwmon_fields {
F_GLOBAL_IRQ_CLEAR,
@@ -343,6 +344,8 @@ static void bwmon_clear_counters(struct icc_bwmon *bwmon, bool clear_all)
* before we try to clear the IRQ or do any other counter operations.
*/
regmap_field_force_write(bwmon->regs[F_CLEAR], val);
+ if (bwmon->data->quirks & BWMON_NEEDS_FORCE_CLEAR)
+ regmap_field_force_write(bwmon->regs[F_CLEAR], 0);
}
static void bwmon_clear_irq(struct icc_bwmon *bwmon)
@@ -364,6 +367,8 @@ static void bwmon_clear_irq(struct icc_bwmon *bwmon)
* interrupt is cleared.
*/
regmap_field_force_write(bwmon->regs[F_IRQ_CLEAR], BWMON_IRQ_ENABLE_MASK);
+ if (bwmon->data->quirks & BWMON_NEEDS_FORCE_CLEAR)
+ regmap_field_force_write(bwmon->regs[F_IRQ_CLEAR], 0);
if (bwmon->data->quirks & BWMON_HAS_GLOBAL_IRQ)
regmap_field_force_write(bwmon->regs[F_GLOBAL_IRQ_CLEAR],
BWMON_V4_GLOBAL_IRQ_ENABLE_ENABLE);
@@ -664,6 +669,7 @@ static const struct icc_bwmon_data sc7280_llcc_bwmon_data = {
.default_lowbw_kbps = 0,
.zone1_thres_count = 16,
.zone3_thres_count = 1,
+ .quirks = BWMON_NEEDS_FORCE_CLEAR,
.regmap_fields = sdm845_llcc_bwmon_reg_fields,
.regmap_cfg = &sdm845_llcc_bwmon_regmap_cfg,
};
--
2.17.1
