Commit cdad59c2 authored by Rajendra Nayak's avatar Rajendra Nayak Committed by Bjorn Andersson
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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: default avatarRajendra Nayak <quic_rjendra@quicinc.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220902043511.17130-4-quic_rjendra@quicinc.com
parent 1335fc5b

drivers/soc/qcom/icc-bwmon.c

+6 −0
Original line number Diff line number Diff line
@@ -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,

};