diff mbox series

[06/10] soc: qcom: icc-bwmon: store count unit per variant

Message ID 20220720192807.130098-7-krzysztof.kozlowski@linaro.org (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series soc/arm64: qcom: Add LLCC BWMON on SDM845 | expand

Commit Message

Krzysztof Kozlowski July 20, 2022, 7:28 p.m. UTC 
Versions v4 and v5 of BWMON on SDM845 use different unit count, so allow
easier variant customization by storing its value in struct
icc_bwmon_data.

Cc: Rajendra Nayak <quic_rjendra@quicinc.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/soc/qcom/icc-bwmon.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

Comments

Sibi Sankar July 26, 2022, 11:37 a.m. UTC | #1 
On 7/21/22 12:58 AM, Krzysztof Kozlowski wrote:
> Versions v4 and v5 of BWMON on SDM845 use different unit count, so allow
> easier variant customization by storing its value in struct
> icc_bwmon_data.
> 
> Cc: Rajendra Nayak <quic_rjendra@quicinc.com>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Reviewed-by: Sibi Sankar <quic_sibis@quicinc.com>

> ---
>   drivers/soc/qcom/icc-bwmon.c | 15 ++++++++-------
>   1 file changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/soc/qcom/icc-bwmon.c b/drivers/soc/qcom/icc-bwmon.c
> index dcd445af6488..9a99e0fd1140 100644
> --- a/drivers/soc/qcom/icc-bwmon.c
> +++ b/drivers/soc/qcom/icc-bwmon.c
> @@ -104,12 +104,11 @@
>   #define BWMON_THRESHOLD_COUNT_ZONE0_DEFAULT	0xff
>   #define BWMON_THRESHOLD_COUNT_ZONE2_DEFAULT	0xff
>   
> -/* BWMONv4 count registers use count unit of 64 kB */
> -#define BWMON_COUNT_UNIT_KB			64
>   #define BWMON_ZONE_MAX(zone)			(0x2e0 + 4 * (zone))
>   
>   struct icc_bwmon_data {
>   	unsigned int sample_ms;
> +	unsigned int count_unit_kb; /* kbytes */
>   	unsigned int default_highbw_kbps;
>   	unsigned int default_medbw_kbps;
>   	unsigned int default_lowbw_kbps;
> @@ -193,9 +192,10 @@ static void bwmon_enable(struct icc_bwmon *bwmon, unsigned int irq_enable)
>   	writel(BWMON_ENABLE_ENABLE, bwmon->base + BWMON_ENABLE);
>   }
>   
> -static unsigned int bwmon_kbps_to_count(unsigned int kbps)
> +static unsigned int bwmon_kbps_to_count(struct icc_bwmon *bwmon,
> +					unsigned int kbps)
>   {
> -	return kbps / BWMON_COUNT_UNIT_KB;
> +	return kbps / bwmon->data->count_unit_kb;
>   }
>   
>   static void bwmon_set_threshold(struct icc_bwmon *bwmon, unsigned int reg,
> @@ -203,8 +203,8 @@ static void bwmon_set_threshold(struct icc_bwmon *bwmon, unsigned int reg,
>   {
>   	unsigned int thres;
>   
> -	thres = mult_frac(bwmon_kbps_to_count(kbps), bwmon->data->sample_ms,
> -			  MSEC_PER_SEC);
> +	thres = mult_frac(bwmon_kbps_to_count(bwmon, kbps),
> +			  bwmon->data->sample_ms, MSEC_PER_SEC);
>   	writel_relaxed(thres, bwmon->base + reg);
>   }
>   
> @@ -270,7 +270,7 @@ static irqreturn_t bwmon_intr(int irq, void *dev_id)
>   	 * downstream) always increments the max bytes count by one.
>   	 */
>   	max = readl(bwmon->base + BWMON_ZONE_MAX(zone)) + 1;
> -	max *= BWMON_COUNT_UNIT_KB;
> +	max *= bwmon->data->count_unit_kb;
>   	bwmon->target_kbps = mult_frac(max, MSEC_PER_SEC, bwmon->data->sample_ms);
>   
>   	return IRQ_WAKE_THREAD;
> @@ -394,6 +394,7 @@ static int bwmon_remove(struct platform_device *pdev)
>   /* BWMON v4 */
>   static const struct icc_bwmon_data msm8998_bwmon_data = {
>   	.sample_ms = 4,
> +	.count_unit_kb = 64,
>   	.default_highbw_kbps = 4800 * 1024, /* 4.8 GBps */
>   	.default_medbw_kbps = 512 * 1024, /* 512 MBps */
>   	.default_lowbw_kbps = 0,
>
diff mbox series

Patch

diff --git a/drivers/soc/qcom/icc-bwmon.c b/drivers/soc/qcom/icc-bwmon.c
index dcd445af6488..9a99e0fd1140 100644
--- a/drivers/soc/qcom/icc-bwmon.c
+++ b/drivers/soc/qcom/icc-bwmon.c
@@ -104,12 +104,11 @@ 
 #define BWMON_THRESHOLD_COUNT_ZONE0_DEFAULT	0xff
 #define BWMON_THRESHOLD_COUNT_ZONE2_DEFAULT	0xff
 
-/* BWMONv4 count registers use count unit of 64 kB */
-#define BWMON_COUNT_UNIT_KB			64
 #define BWMON_ZONE_MAX(zone)			(0x2e0 + 4 * (zone))
 
 struct icc_bwmon_data {
 	unsigned int sample_ms;
+	unsigned int count_unit_kb; /* kbytes */
 	unsigned int default_highbw_kbps;
 	unsigned int default_medbw_kbps;
 	unsigned int default_lowbw_kbps;
@@ -193,9 +192,10 @@  static void bwmon_enable(struct icc_bwmon *bwmon, unsigned int irq_enable)
 	writel(BWMON_ENABLE_ENABLE, bwmon->base + BWMON_ENABLE);
 }
 
-static unsigned int bwmon_kbps_to_count(unsigned int kbps)
+static unsigned int bwmon_kbps_to_count(struct icc_bwmon *bwmon,
+					unsigned int kbps)
 {
-	return kbps / BWMON_COUNT_UNIT_KB;
+	return kbps / bwmon->data->count_unit_kb;
 }
 
 static void bwmon_set_threshold(struct icc_bwmon *bwmon, unsigned int reg,
@@ -203,8 +203,8 @@  static void bwmon_set_threshold(struct icc_bwmon *bwmon, unsigned int reg,
 {
 	unsigned int thres;
 
-	thres = mult_frac(bwmon_kbps_to_count(kbps), bwmon->data->sample_ms,
-			  MSEC_PER_SEC);
+	thres = mult_frac(bwmon_kbps_to_count(bwmon, kbps),
+			  bwmon->data->sample_ms, MSEC_PER_SEC);
 	writel_relaxed(thres, bwmon->base + reg);
 }
 
@@ -270,7 +270,7 @@  static irqreturn_t bwmon_intr(int irq, void *dev_id)
 	 * downstream) always increments the max bytes count by one.
 	 */
 	max = readl(bwmon->base + BWMON_ZONE_MAX(zone)) + 1;
-	max *= BWMON_COUNT_UNIT_KB;
+	max *= bwmon->data->count_unit_kb;
 	bwmon->target_kbps = mult_frac(max, MSEC_PER_SEC, bwmon->data->sample_ms);
 
 	return IRQ_WAKE_THREAD;
@@ -394,6 +394,7 @@  static int bwmon_remove(struct platform_device *pdev)
 /* BWMON v4 */
 static const struct icc_bwmon_data msm8998_bwmon_data = {
 	.sample_ms = 4,
+	.count_unit_kb = 64,
 	.default_highbw_kbps = 4800 * 1024, /* 4.8 GBps */
 	.default_medbw_kbps = 512 * 1024, /* 512 MBps */
 	.default_lowbw_kbps = 0,