leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

soc: qcom: icc-bwmon: force clear counter/irq registers

Browse Source 
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@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220902043511.17130-4-quic_rjendra@quicinc.com
This commit is contained in:
Rajendra Nayak 2022-09-02 10:05:10 +05:30 committed by Bjorn Andersson
parent 1335fc5b24
commit cdad59c2d8
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/soc/qcom/icc-bwmon.c
View File

@ -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);
@ -662,6 +667,7 @@ 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,
};