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| author | Rajendra Nayak <quic_rjendra@quicinc.com> | 2022-09-02 10:05:10 +0530 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2022-09-05 21:51:08 -0500 |
| commit | cdad59c2d8698505c328c19832fbd2781e79adac (patch) | |
| tree | cf3da142d7d915e6d3db646197453a0636f25d4c /drivers/soc | |
| parent | 1335fc5b24d3fd51bdae0747b153433f2969edfc (diff) | |
| download | linux-stable-cdad59c2d8698505c328c19832fbd2781e79adac.tar.gz linux-stable-cdad59c2d8698505c328c19832fbd2781e79adac.tar.bz2 linux-stable-cdad59c2d8698505c328c19832fbd2781e79adac.zip | |
soc: qcom: icc-bwmon: force clear counter/irq registers
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
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/qcom/icc-bwmon.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/soc/qcom/icc-bwmon.c b/drivers/soc/qcom/icc-bwmon.c index 056e630500e0..d07be3700db6 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); @@ -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, }; |