diff mbox series

[v4,01/12] dt-bindings: iio: qcom: adc7-pm8350: Allow specifying SID for channels

Message ID 20221103095810.64606-2-manivannan.sadhasivam@linaro.org (mailing list archive)
State Not Applicable
Headers show
Series sc8280xp-pmic updates and X13s thermal zone support | expand

Commit Message

Manivannan Sadhasivam Nov. 3, 2022, 9:57 a.m. UTC 
As per the new ADC7 architecture used by the Qualcomm PMICs, each PMIC
has the static Slave ID (SID) assigned by default. The primary PMIC
PMK8350 is responsible for collecting the temperature/voltage data from
the slave PMICs and exposing them via it's registers.

For getting the measurements from the slave PMICs, PMK8350 uses the
channel ID encoded with the SID of the relevant PMIC. So far, the
dt-binding for the slave PMIC PM8350 assumed that there will be only
one PM8350 in a system. So it harcoded SID 1 with channel IDs.

But this got changed in platforms such as Lenovo X13s where there are a
couple of PM8350 PMICs available. So to address multiple PM8350s, change
the binding to accept the SID specified by the user and use it for
encoding the channel ID.

It should be noted that, even though the SID is static it is not
globally unique. Only the primary PMIC has the unique SID id 0.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 .../bindings/thermal/qcom-spmi-adc-tm5.yaml   |  6 +-
 .../dt-bindings/iio/qcom,spmi-adc7-pm8350.h   | 90 +++++++++----------
 2 files changed, 46 insertions(+), 50 deletions(-)

Comments

Krzysztof Kozlowski Nov. 17, 2022, 12:14 p.m. UTC | #1 
On 03/11/2022 10:57, Manivannan Sadhasivam wrote:
> As per the new ADC7 architecture used by the Qualcomm PMICs, each PMIC
> has the static Slave ID (SID) assigned by default. The primary PMIC
> PMK8350 is responsible for collecting the temperature/voltage data from
> the slave PMICs and exposing them via it's registers.
> 
> For getting the measurements from the slave PMICs, PMK8350 uses the
> channel ID encoded with the SID of the relevant PMIC. So far, the
> dt-binding for the slave PMIC PM8350 assumed that there will be only
> one PM8350 in a system. So it harcoded SID 1 with channel IDs.
> 
> But this got changed in platforms such as Lenovo X13s where there are a
> couple of PM8350 PMICs available. So to address multiple PM8350s, change
> the binding to accept the SID specified by the user and use it for
> encoding the channel ID.
> 
> It should be noted that, even though the SID is static it is not
> globally unique. Only the primary PMIC has the unique SID id 0.
> 
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Acked-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---

This was never sent to IIO maintainers, so now next is failing.

Please use scripts/get_maintainers.pl to get a list of necessary people
and lists to CC.  It might happen, that command when run on an older
kernel, gives you outdated entries.  Therefore please be sure you base
your patches on recent Linux kernel.

Best regards,
Krzysztof
Manivannan Sadhasivam Nov. 17, 2022, 12:26 p.m. UTC | #2 
On Thu, Nov 17, 2022 at 01:14:00PM +0100, Krzysztof Kozlowski wrote:
> On 03/11/2022 10:57, Manivannan Sadhasivam wrote:
> > As per the new ADC7 architecture used by the Qualcomm PMICs, each PMIC
> > has the static Slave ID (SID) assigned by default. The primary PMIC
> > PMK8350 is responsible for collecting the temperature/voltage data from
> > the slave PMICs and exposing them via it's registers.
> > 
> > For getting the measurements from the slave PMICs, PMK8350 uses the
> > channel ID encoded with the SID of the relevant PMIC. So far, the
> > dt-binding for the slave PMIC PM8350 assumed that there will be only
> > one PM8350 in a system. So it harcoded SID 1 with channel IDs.
> > 
> > But this got changed in platforms such as Lenovo X13s where there are a
> > couple of PM8350 PMICs available. So to address multiple PM8350s, change
> > the binding to accept the SID specified by the user and use it for
> > encoding the channel ID.
> > 
> > It should be noted that, even though the SID is static it is not
> > globally unique. Only the primary PMIC has the unique SID id 0.
> > 
> > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> > Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> > Acked-by: Rob Herring <robh@kernel.org>
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > ---
> 
> This was never sent to IIO maintainers, so now next is failing.
> 

I missed it since there was only one bindings patch and rest all were dts :/

> Please use scripts/get_maintainers.pl to get a list of necessary people
> and lists to CC.  It might happen, that command when run on an older
> kernel, gives you outdated entries.  Therefore please be sure you base
> your patches on recent Linux kernel.
> 

The problem was that I didn't rebase my patches on top of linux-next/Bjorn's
for-next at that time but used v6.1-rcX. So I did not see the example in
spmi-vadc.

Thanks,
Mani

> Best regards,
> Krzysztof
>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml b/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml
index feb390d50696..d20569b9b763 100644
--- a/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml
+++ b/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml
@@ -222,8 +222,8 @@  examples:
                 qcom,hw-settle-time = <200>;
             };
 
-            conn-therm@47 {
-                reg = <PM8350_ADC7_AMUX_THM4_100K_PU>;
+            conn-therm@147 {
+                reg = <PM8350_ADC7_AMUX_THM4_100K_PU(1)>;
                 qcom,ratiometric;
                 qcom,hw-settle-time = <200>;
             };
@@ -247,7 +247,7 @@  examples:
 
             conn-therm@1 {
                 reg = <1>;
-                io-channels = <&pmk8350_vadc PM8350_ADC7_AMUX_THM4_100K_PU>;
+                io-channels = <&pmk8350_vadc PM8350_ADC7_AMUX_THM4_100K_PU(1)>;
                 qcom,avg-samples = <2>;
                 qcom,ratiometric;
                 qcom,hw-settle-time-us = <200>;
diff --git a/include/dt-bindings/iio/qcom,spmi-adc7-pm8350.h b/include/dt-bindings/iio/qcom,spmi-adc7-pm8350.h
index 9426f27a1946..09fd169ad18e 100644
--- a/include/dt-bindings/iio/qcom,spmi-adc7-pm8350.h
+++ b/include/dt-bindings/iio/qcom,spmi-adc7-pm8350.h
@@ -6,62 +6,58 @@ 
 #ifndef _DT_BINDINGS_QCOM_SPMI_VADC_PM8350_H
 #define _DT_BINDINGS_QCOM_SPMI_VADC_PM8350_H
 
-#ifndef PM8350_SID
-#define PM8350_SID					1
-#endif
-
 /* ADC channels for PM8350_ADC for PMIC7 */
-#define PM8350_ADC7_REF_GND			(PM8350_SID << 8 | 0x0)
-#define PM8350_ADC7_1P25VREF			(PM8350_SID << 8 | 0x01)
-#define PM8350_ADC7_VREF_VADC			(PM8350_SID << 8 | 0x02)
-#define PM8350_ADC7_DIE_TEMP			(PM8350_SID << 8 | 0x03)
-
-#define PM8350_ADC7_AMUX_THM1			(PM8350_SID << 8 | 0x04)
-#define PM8350_ADC7_AMUX_THM2			(PM8350_SID << 8 | 0x05)
-#define PM8350_ADC7_AMUX_THM3			(PM8350_SID << 8 | 0x06)
-#define PM8350_ADC7_AMUX_THM4			(PM8350_SID << 8 | 0x07)
-#define PM8350_ADC7_AMUX_THM5			(PM8350_SID << 8 | 0x08)
-#define PM8350_ADC7_GPIO1			(PM8350_SID << 8 | 0x0a)
-#define PM8350_ADC7_GPIO2			(PM8350_SID << 8 | 0x0b)
-#define PM8350_ADC7_GPIO3			(PM8350_SID << 8 | 0x0c)
-#define PM8350_ADC7_GPIO4			(PM8350_SID << 8 | 0x0d)
+#define PM8350_ADC7_REF_GND(sid)			((sid) << 8 | 0x0)
+#define PM8350_ADC7_1P25VREF(sid)			((sid) << 8 | 0x01)
+#define PM8350_ADC7_VREF_VADC(sid)			((sid) << 8 | 0x02)
+#define PM8350_ADC7_DIE_TEMP(sid)			((sid) << 8 | 0x03)
+
+#define PM8350_ADC7_AMUX_THM1(sid)			((sid) << 8 | 0x04)
+#define PM8350_ADC7_AMUX_THM2(sid)			((sid) << 8 | 0x05)
+#define PM8350_ADC7_AMUX_THM3(sid)			((sid) << 8 | 0x06)
+#define PM8350_ADC7_AMUX_THM4(sid)			((sid) << 8 | 0x07)
+#define PM8350_ADC7_AMUX_THM5(sid)			((sid) << 8 | 0x08)
+#define PM8350_ADC7_GPIO1(sid)				((sid) << 8 | 0x0a)
+#define PM8350_ADC7_GPIO2(sid)				((sid) << 8 | 0x0b)
+#define PM8350_ADC7_GPIO3(sid)				((sid) << 8 | 0x0c)
+#define PM8350_ADC7_GPIO4(sid)				((sid) << 8 | 0x0d)
 
 /* 30k pull-up1 */
-#define PM8350_ADC7_AMUX_THM1_30K_PU		(PM8350_SID << 8 | 0x24)
-#define PM8350_ADC7_AMUX_THM2_30K_PU		(PM8350_SID << 8 | 0x25)
-#define PM8350_ADC7_AMUX_THM3_30K_PU		(PM8350_SID << 8 | 0x26)
-#define PM8350_ADC7_AMUX_THM4_30K_PU		(PM8350_SID << 8 | 0x27)
-#define PM8350_ADC7_AMUX_THM5_30K_PU		(PM8350_SID << 8 | 0x28)
-#define PM8350_ADC7_GPIO1_30K_PU		(PM8350_SID << 8 | 0x2a)
-#define PM8350_ADC7_GPIO2_30K_PU		(PM8350_SID << 8 | 0x2b)
-#define PM8350_ADC7_GPIO3_30K_PU		(PM8350_SID << 8 | 0x2c)
-#define PM8350_ADC7_GPIO4_30K_PU		(PM8350_SID << 8 | 0x2d)
+#define PM8350_ADC7_AMUX_THM1_30K_PU(sid)		((sid) << 8 | 0x24)
+#define PM8350_ADC7_AMUX_THM2_30K_PU(sid)		((sid) << 8 | 0x25)
+#define PM8350_ADC7_AMUX_THM3_30K_PU(sid)		((sid) << 8 | 0x26)
+#define PM8350_ADC7_AMUX_THM4_30K_PU(sid)		((sid) << 8 | 0x27)
+#define PM8350_ADC7_AMUX_THM5_30K_PU(sid)		((sid) << 8 | 0x28)
+#define PM8350_ADC7_GPIO1_30K_PU(sid)			((sid) << 8 | 0x2a)
+#define PM8350_ADC7_GPIO2_30K_PU(sid)			((sid) << 8 | 0x2b)
+#define PM8350_ADC7_GPIO3_30K_PU(sid)			((sid) << 8 | 0x2c)
+#define PM8350_ADC7_GPIO4_30K_PU(sid)			((sid) << 8 | 0x2d)
 
 /* 100k pull-up2 */
-#define PM8350_ADC7_AMUX_THM1_100K_PU		(PM8350_SID << 8 | 0x44)
-#define PM8350_ADC7_AMUX_THM2_100K_PU		(PM8350_SID << 8 | 0x45)
-#define PM8350_ADC7_AMUX_THM3_100K_PU		(PM8350_SID << 8 | 0x46)
-#define PM8350_ADC7_AMUX_THM4_100K_PU		(PM8350_SID << 8 | 0x47)
-#define PM8350_ADC7_AMUX_THM5_100K_PU		(PM8350_SID << 8 | 0x48)
-#define PM8350_ADC7_GPIO1_100K_PU		(PM8350_SID << 8 | 0x4a)
-#define PM8350_ADC7_GPIO2_100K_PU		(PM8350_SID << 8 | 0x4b)
-#define PM8350_ADC7_GPIO3_100K_PU		(PM8350_SID << 8 | 0x4c)
-#define PM8350_ADC7_GPIO4_100K_PU		(PM8350_SID << 8 | 0x4d)
+#define PM8350_ADC7_AMUX_THM1_100K_PU(sid)		((sid) << 8 | 0x44)
+#define PM8350_ADC7_AMUX_THM2_100K_PU(sid)		((sid) << 8 | 0x45)
+#define PM8350_ADC7_AMUX_THM3_100K_PU(sid)		((sid) << 8 | 0x46)
+#define PM8350_ADC7_AMUX_THM4_100K_PU(sid)		((sid) << 8 | 0x47)
+#define PM8350_ADC7_AMUX_THM5_100K_PU(sid)		((sid) << 8 | 0x48)
+#define PM8350_ADC7_GPIO1_100K_PU(sid)			((sid) << 8 | 0x4a)
+#define PM8350_ADC7_GPIO2_100K_PU(sid)			((sid) << 8 | 0x4b)
+#define PM8350_ADC7_GPIO3_100K_PU(sid)			((sid) << 8 | 0x4c)
+#define PM8350_ADC7_GPIO4_100K_PU(sid)			((sid) << 8 | 0x4d)
 
 /* 400k pull-up3 */
-#define PM8350_ADC7_AMUX_THM1_400K_PU		(PM8350_SID << 8 | 0x64)
-#define PM8350_ADC7_AMUX_THM2_400K_PU		(PM8350_SID << 8 | 0x65)
-#define PM8350_ADC7_AMUX_THM3_400K_PU		(PM8350_SID << 8 | 0x66)
-#define PM8350_ADC7_AMUX_THM4_400K_PU		(PM8350_SID << 8 | 0x67)
-#define PM8350_ADC7_AMUX_THM5_400K_PU		(PM8350_SID << 8 | 0x68)
-#define PM8350_ADC7_GPIO1_400K_PU		(PM8350_SID << 8 | 0x6a)
-#define PM8350_ADC7_GPIO2_400K_PU		(PM8350_SID << 8 | 0x6b)
-#define PM8350_ADC7_GPIO3_400K_PU		(PM8350_SID << 8 | 0x6c)
-#define PM8350_ADC7_GPIO4_400K_PU		(PM8350_SID << 8 | 0x6d)
+#define PM8350_ADC7_AMUX_THM1_400K_PU(sid)		((sid) << 8 | 0x64)
+#define PM8350_ADC7_AMUX_THM2_400K_PU(sid)		((sid) << 8 | 0x65)
+#define PM8350_ADC7_AMUX_THM3_400K_PU(sid)		((sid) << 8 | 0x66)
+#define PM8350_ADC7_AMUX_THM4_400K_PU(sid)		((sid) << 8 | 0x67)
+#define PM8350_ADC7_AMUX_THM5_400K_PU(sid)		((sid) << 8 | 0x68)
+#define PM8350_ADC7_GPIO1_400K_PU(sid)			((sid) << 8 | 0x6a)
+#define PM8350_ADC7_GPIO2_400K_PU(sid)			((sid) << 8 | 0x6b)
+#define PM8350_ADC7_GPIO3_400K_PU(sid)			((sid) << 8 | 0x6c)
+#define PM8350_ADC7_GPIO4_400K_PU(sid)			((sid) << 8 | 0x6d)
 
 /* 1/3 Divider */
-#define PM8350_ADC7_GPIO4_DIV3			(PM8350_SID << 8 | 0x8d)
+#define PM8350_ADC7_GPIO4_DIV3(sid)			((sid) << 8 | 0x8d)
 
-#define PM8350_ADC7_VPH_PWR			(PM8350_SID << 8 | 0x8e)
+#define PM8350_ADC7_VPH_PWR(sid)			((sid) << 8 | 0x8e)
 
 #endif /* _DT_BINDINGS_QCOM_SPMI_VADC_PM8350_H */