RE: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code
-Original Message- From: Menon, Nishanth Sent: Thursday, September 16, 2010 7:37 PM To: Gopinath, Thara Cc: Kevin Hilman; linux-omap@vger.kernel.org; linux-arm-ker...@lists.infradead.org Subject: Re: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code Gopinath, Thara had written, on 09/16/2010 08:51 AM, the following: -Original Message- From: Menon, Nishanth Sent: Thursday, September 16, 2010 5:45 PM To: Gopinath, Thara Cc: Kevin Hilman; linux-omap@vger.kernel.org; linux-arm-ker...@lists.infradead.org Subject: Re: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code Gopinath, Thara had written, on 09/16/2010 05:40 AM, the following: -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Kevin Hilman Sent: Thursday, September 16, 2010 3:27 AM To: linux-omap@vger.kernel.org Cc: linux-arm-ker...@lists.infradead.org Subject: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code From: Paul Walmsley p...@pwsan.com The OPP layer code should be independent of the PMIC, introduce the TWL/TPS-specific code out to its own file. Hello Kevin, I have been using this code for a while now. I really do not think wee need a separate file for implementing the vsel to voltage in (uV) and vice versa formulas. Today only voltage This split introduces a PMIC level abstraction already. Do you have a suggestion which file it should go to? It is definitely not part of opp.c, not part of other existing twl files as well. the job of this file was to introduce conversion routines which can be used by any layer (voltage layer if need be - it used to be srf and smartreflex before).. in fact one of your voltage layer patches introduces capability for 6030 as well http://marc.info/?l=linux-omapm=128213020927919w=2 Yes one of my patches has introduces this coz I had no other way to add OMAP4 support. But I still do not understand why cant these APIs be implemented in twl-core.c or twl4030-power.c? Why there? Twl power does regulator operations not conversion operations. core is not the place either as it is function independent. Hello Nishant, Why do you say core is not the place. For me core is exactly the place. It is the PMIC driver file. Regards Thara -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code
Gopinath, Thara had written, on 09/17/2010 09:57 AM, the following: [..] From: Paul Walmsley p...@pwsan.com The OPP layer code should be independent of the PMIC, introduce the TWL/TPS-specific code out to its own file. I have been using this code for a while now. I really do not think wee need a separate file for implementing the vsel to voltage in (uV) and vice versa formulas. Today only voltage This split introduces a PMIC level abstraction already. Do you have a suggestion which file it should go to? It is definitely not part of opp.c, not part of other existing twl files as well. the job of this file was to introduce conversion routines which can be used by any layer (voltage layer if need be - it used to be srf and smartreflex before).. in fact one of your voltage layer patches introduces capability for 6030 as well http://marc.info/?l=linux-omapm=128213020927919w=2 Yes one of my patches has introduces this coz I had no other way to add OMAP4 support. But I still do not understand why cant these APIs be implemented in twl-core.c or twl4030-power.c? Why there? Twl power does regulator operations not conversion operations. core is not the place either as it is function independent. Why do you say core is not the place. For me core is exactly the place. It is the PMIC driver file. See [1] - they are all generic without a specific domain implementation. if we are so touchy about the location we want these api implementation, I guess core might be a compromise enough.. personally even though I believe core should remain specific functionality independent, I dont think I have very strong opinions about adding helpers there.. i would'nt put registration there though.. That should be in board files.. [1] http://git.kernel.org/?p=linux/kernel/git/khilman/linux-omap-pm.git;a=blob;f=drivers/mfd/twl4030-core.c;h=769b34bd48e445880ac0920423d9b73eabaf4cb7;hb=HEAD -- Regards, Nishanth Menon -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code
-Original Message-
From: linux-omap-ow...@vger.kernel.org
[mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Kevin
Hilman
Sent: Thursday, September 16, 2010 3:27 AM
To: linux-omap@vger.kernel.org
Cc: linux-arm-ker...@lists.infradead.org
Subject: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code
From: Paul Walmsley p...@pwsan.com
The OPP layer code should be independent of the PMIC,
introduce the TWL/TPS-specific code out to its own file.
Hello Kevin,
I have been using this code for a while now. I really do not think wee need a
separate
file for implementing the vsel to voltage in (uV) and vice versa formulas.
Today only voltage
layer is interested in these conversions. Voltage layer has a structure that
can be populated with
the information required from the PMIC. We only need to add two more function
pointers to this structure. This info can then be passed from the actual PMIC
driver file. This will make it much
more simpler for OMAP4 where we have different formulas between different
revisions of PMIC. Also
in the omap voltage code we will no longer have to hard code
omap_twl_vsel_to_uv and omap_twl_uv_to_vsel. So please consider dropping this
patch from this series.
Regards
Thara
Signed-off-by: Paul Walmsley p...@pwsan.com
Signed-off-by: Romit Dasgupta ro...@ti.com
Signed-off-by: Phil Carmody ext-phil.2.carm...@nokia.com
Signed-off-by: Nishanth Menon n...@ti.com
Signed-off-by: Kevin Hilman khil...@deeprootsystems.com
---
arch/arm/plat-omap/Makefile |1 +
arch/arm/plat-omap/include/plat/opp_twl_tps.h | 21 +
arch/arm/plat-omap/opp_twl_tps.c | 41
+
3 files changed, 63 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/plat-omap/include/plat/opp_twl_tps.h
create mode 100644 arch/arm/plat-omap/opp_twl_tps.c
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index c718a0a..a88879c 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o
# OPP support in (OMAP3+ only at the moment)
ifdef CONFIG_PM
obj-$(CONFIG_ARCH_OMAP3) += opp.o
+obj-$(CONFIG_TWL4030_CORE) += opp_twl_tps.o
endif
# omap_device support (OMAP2+ only at the moment)
diff --git a/arch/arm/plat-omap/include/plat/opp_twl_tps.h b/arch/arm/plat-
omap/include/plat/opp_twl_tps.h
new file mode 100644
index 000..8784e5f
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/opp_twl_tps.h
@@ -0,0 +1,21 @@
+/*
+ * opp_twl_tps.h - TWL/TPS-specific headers for the OPP code
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated.
+ * Nishanth Menon
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * XXX This code belongs as part of some other TWL/TPS code.
+ */
+#ifndef _ARCH_ARM_PLAT_OMAP_OPP_TWL_TPS_H
+#define _ARCH_ARM_PLAT_OMAP_OPP_TWL_TPS_H
+
+#include linux/kernel.h
+
+unsigned long omap_twl_vsel_to_uv(const u8 vsel);
+u8 omap_twl_uv_to_vsel(unsigned long uV);
+
+#endif
diff --git a/arch/arm/plat-omap/opp_twl_tps.c
b/arch/arm/plat-omap/opp_twl_tps.c
new file mode 100644
index 000..112f106
--- /dev/null
+++ b/arch/arm/plat-omap/opp_twl_tps.c
@@ -0,0 +1,41 @@
+/*
+ * opp_twl_tps.c - TWL/TPS-specific functions for the OPP code
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated.
+ * Nishanth Menon
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * XXX This code should be part of some other TWL/TPS code.
+ */
+
+#include plat/opp_twl_tps.h
+
+/**
+ * omap_twl_vsel_to_vdc - convert TWL/TPS VSEL value to microvolts DC
+ * @vsel: TWL/TPS VSEL value to convert
+ *
+ * Returns the microvolts DC that the TWL/TPS family of PMICs should
+ * generate when programmed with @vsel.
+ */
+unsigned long omap_twl_vsel_to_uv(const u8 vsel)
+{
+ return (((vsel * 125) + 6000)) * 100;
+}
+
+/**
+ * omap_twl_uv_to_vsel - convert microvolts DC to TWL/TPS VSEL value
+ * @uv: microvolts DC to convert
+ *
+ * Returns the VSEL value necessary for the TWL/TPS family of PMICs to
+ * generate an output voltage equal to or greater than @uv microvolts DC.
+ */
+u8 omap_twl_uv_to_vsel(unsigned long uv)
+{
+ /* Round up to higher voltage */
+ return DIV_ROUND_UP(uv - 60, 12500);
+}
--
1.7.2.1
--
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Re: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code
Gopinath, Thara had written, on 09/16/2010 05:40 AM, the following: -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Kevin Hilman Sent: Thursday, September 16, 2010 3:27 AM To: linux-omap@vger.kernel.org Cc: linux-arm-ker...@lists.infradead.org Subject: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code From: Paul Walmsley p...@pwsan.com The OPP layer code should be independent of the PMIC, introduce the TWL/TPS-specific code out to its own file. Hello Kevin, I have been using this code for a while now. I really do not think wee need a separate file for implementing the vsel to voltage in (uV) and vice versa formulas. Today only voltage This split introduces a PMIC level abstraction already. Do you have a suggestion which file it should go to? It is definitely not part of opp.c, not part of other existing twl files as well. the job of this file was to introduce conversion routines which can be used by any layer (voltage layer if need be - it used to be srf and smartreflex before).. in fact one of your voltage layer patches introduces capability for 6030 as well http://marc.info/?l=linux-omapm=128213020927919w=2 layer is interested in these conversions. Voltage layer has a structure that can be populated with the information required from the PMIC. We only need to add two more function pointers to this structure. This info can then be passed from the actual PMIC driver file. This will make it much more simpler for OMAP4 where we have different formulas between different revisions of PMIC. Also in the omap voltage code we will no longer have to hard code omap_twl_vsel_to_uv and omap_twl_uv_to_vsel. I think the problem is with the voltage layer (which has not been posted upstream) which is using hard coded function pointer. What the patchset should have done is to introduce function pointers registration from twl_tps.c to voltage layer and voltage layer should ideally been using function pointers by itself. So please consider dropping this patch from this series. I think I disagree - rationale for having this separated as a pmic specific file is still sound, only the implementation of the future framework should have changed (it should be using function pointers instead of hardcoded function names). in fact I can add additional suggestion for the voltage layer: the pmic selection should be done from a board file - This will allow voltage layer to handle numerous PMICs and combination of PMICs controlling various domains as well.. the only neat way to handle it is ofcourse using function pointers. PS: Suggestion - please fix your mailer to round off for 70/80 chars.. - might be good to point folks to rfc patchset for voltage layer to give context. -- Regards, Nishanth Menon -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code
-Original Message- From: Menon, Nishanth Sent: Thursday, September 16, 2010 5:45 PM To: Gopinath, Thara Cc: Kevin Hilman; linux-omap@vger.kernel.org; linux-arm-ker...@lists.infradead.org Subject: Re: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code Gopinath, Thara had written, on 09/16/2010 05:40 AM, the following: -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Kevin Hilman Sent: Thursday, September 16, 2010 3:27 AM To: linux-omap@vger.kernel.org Cc: linux-arm-ker...@lists.infradead.org Subject: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code From: Paul Walmsley p...@pwsan.com The OPP layer code should be independent of the PMIC, introduce the TWL/TPS-specific code out to its own file. Hello Kevin, I have been using this code for a while now. I really do not think wee need a separate file for implementing the vsel to voltage in (uV) and vice versa formulas. Today only voltage This split introduces a PMIC level abstraction already. Do you have a suggestion which file it should go to? It is definitely not part of opp.c, not part of other existing twl files as well. the job of this file was to introduce conversion routines which can be used by any layer (voltage layer if need be - it used to be srf and smartreflex before).. in fact one of your voltage layer patches introduces capability for 6030 as well http://marc.info/?l=linux-omapm=128213020927919w=2 Yes one of my patches has introduces this coz I had no other way to add OMAP4 support. But I still do not understand why cant these APIs be implemented in twl-core.c or twl4030-power.c? layer is interested in these conversions. Voltage layer has a structure that can be populated with the information required from the PMIC. We only need to add two more function pointers to this structure. This info can then be passed from the actual PMIC driver file. This will make it much more simpler for OMAP4 where we have different formulas between different revisions of PMIC. Also in the omap voltage code we will no longer have to hard code omap_twl_vsel_to_uv and omap_twl_uv_to_vsel. I think the problem is with the voltage layer (which has not been posted upstream) which is using hard coded function pointer. What the patchset should have done is to introduce function pointers registration from twl_tps.c to voltage layer and voltage layer should ideally been using function pointers by itself. So please consider dropping this patch from this series. I think I disagree - rationale for having this separated as a pmic specific file is still sound, only the implementation of the future framework should have changed (it should be using function pointers instead of hardcoded function names). in fact I can add additional suggestion for the voltage layer: the pmic selection should be done from a board file - This will allow voltage layer to handle numerous PMICs and combination of PMICs controlling various domains as well.. the only neat way to handle it is ofcourse using function pointers. Exactly if voltage layer has to use a func ptr, why not let them be populated by the PMIC driver files directly? PS: Suggestion - please fix your mailer to round off for 70/80 char. Will try. - might be good to point folks to rfc patchset for voltage layer to give context. https://patchwork.kernel.org/patch/119429/ -- Regards, Nishanth Menon -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code
Gopinath, Thara had written, on 09/16/2010 08:51 AM, the following: -Original Message- From: Menon, Nishanth Sent: Thursday, September 16, 2010 5:45 PM To: Gopinath, Thara Cc: Kevin Hilman; linux-omap@vger.kernel.org; linux-arm-ker...@lists.infradead.org Subject: Re: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code Gopinath, Thara had written, on 09/16/2010 05:40 AM, the following: -Original Message- From: linux-omap-ow...@vger.kernel.org [mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of Kevin Hilman Sent: Thursday, September 16, 2010 3:27 AM To: linux-omap@vger.kernel.org Cc: linux-arm-ker...@lists.infradead.org Subject: [PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code From: Paul Walmsley p...@pwsan.com The OPP layer code should be independent of the PMIC, introduce the TWL/TPS-specific code out to its own file. Hello Kevin, I have been using this code for a while now. I really do not think wee need a separate file for implementing the vsel to voltage in (uV) and vice versa formulas. Today only voltage This split introduces a PMIC level abstraction already. Do you have a suggestion which file it should go to? It is definitely not part of opp.c, not part of other existing twl files as well. the job of this file was to introduce conversion routines which can be used by any layer (voltage layer if need be - it used to be srf and smartreflex before).. in fact one of your voltage layer patches introduces capability for 6030 as well http://marc.info/?l=linux-omapm=128213020927919w=2 Yes one of my patches has introduces this coz I had no other way to add OMAP4 support. But I still do not understand why cant these APIs be implemented in twl-core.c or twl4030-power.c? Why there? Twl power does regulator operations not conversion operations. core is not the place either as it is function independent. layer is interested in these conversions. Voltage layer has a structure that can be populated with the information required from the PMIC. We only need to add two more function pointers to this structure. This info can then be passed from the actual PMIC driver file. This will make it much more simpler for OMAP4 where we have different formulas between different revisions of PMIC. Also in the omap voltage code we will no longer have to hard code omap_twl_vsel_to_uv and omap_twl_uv_to_vsel. I think the problem is with the voltage layer (which has not been posted upstream) which is using hard coded function pointer. What the patchset should have done is to introduce function pointers registration from twl_tps.c to voltage layer and voltage layer should ideally been using function pointers by itself. So please consider dropping this patch from this series. I think I disagree - rationale for having this separated as a pmic specific file is still sound, only the implementation of the future framework should have changed (it should be using function pointers instead of hardcoded function names). in fact I can add additional suggestion for the voltage layer: the pmic selection should be done from a board file - This will allow voltage layer to handle numerous PMICs and combination of PMICs controlling various domains as well.. the only neat way to handle it is ofcourse using function pointers. Exactly if voltage layer has to use a func ptr, why not let them be populated by the PMIC driver files directly? Again, we are going into the details of how voltage layer will be implemented.. What suggestion do you do when on board x vdd1 is driven by PMIC1, vdd2 by PMIC2? it will have to be somesort of different registration mechanism. but nothing prevents the framework from registering the pointers defined in twl_tps.c PS: Suggestion - please fix your mailer to round off for 70/80 char. Will try. - might be good to point folks to rfc patchset for voltage layer to give context. https://patchwork.kernel.org/patch/119429/ thanks.. -- Regards, Nishanth Menon -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 2/4] OMAP: OPP: twl/tps: Introduce TWL/TPS-specific code
From: Paul Walmsley p...@pwsan.com
The OPP layer code should be independent of the PMIC,
introduce the TWL/TPS-specific code out to its own file.
Signed-off-by: Paul Walmsley p...@pwsan.com
Signed-off-by: Romit Dasgupta ro...@ti.com
Signed-off-by: Phil Carmody ext-phil.2.carm...@nokia.com
Signed-off-by: Nishanth Menon n...@ti.com
Signed-off-by: Kevin Hilman khil...@deeprootsystems.com
---
arch/arm/plat-omap/Makefile |1 +
arch/arm/plat-omap/include/plat/opp_twl_tps.h | 21 +
arch/arm/plat-omap/opp_twl_tps.c | 41 +
3 files changed, 63 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/plat-omap/include/plat/opp_twl_tps.h
create mode 100644 arch/arm/plat-omap/opp_twl_tps.c
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index c718a0a..a88879c 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o
# OPP support in (OMAP3+ only at the moment)
ifdef CONFIG_PM
obj-$(CONFIG_ARCH_OMAP3) += opp.o
+obj-$(CONFIG_TWL4030_CORE) += opp_twl_tps.o
endif
# omap_device support (OMAP2+ only at the moment)
diff --git a/arch/arm/plat-omap/include/plat/opp_twl_tps.h
b/arch/arm/plat-omap/include/plat/opp_twl_tps.h
new file mode 100644
index 000..8784e5f
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/opp_twl_tps.h
@@ -0,0 +1,21 @@
+/*
+ * opp_twl_tps.h - TWL/TPS-specific headers for the OPP code
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated.
+ * Nishanth Menon
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * XXX This code belongs as part of some other TWL/TPS code.
+ */
+#ifndef _ARCH_ARM_PLAT_OMAP_OPP_TWL_TPS_H
+#define _ARCH_ARM_PLAT_OMAP_OPP_TWL_TPS_H
+
+#include linux/kernel.h
+
+unsigned long omap_twl_vsel_to_uv(const u8 vsel);
+u8 omap_twl_uv_to_vsel(unsigned long uV);
+
+#endif
diff --git a/arch/arm/plat-omap/opp_twl_tps.c b/arch/arm/plat-omap/opp_twl_tps.c
new file mode 100644
index 000..112f106
--- /dev/null
+++ b/arch/arm/plat-omap/opp_twl_tps.c
@@ -0,0 +1,41 @@
+/*
+ * opp_twl_tps.c - TWL/TPS-specific functions for the OPP code
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated.
+ * Nishanth Menon
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * XXX This code should be part of some other TWL/TPS code.
+ */
+
+#include plat/opp_twl_tps.h
+
+/**
+ * omap_twl_vsel_to_vdc - convert TWL/TPS VSEL value to microvolts DC
+ * @vsel: TWL/TPS VSEL value to convert
+ *
+ * Returns the microvolts DC that the TWL/TPS family of PMICs should
+ * generate when programmed with @vsel.
+ */
+unsigned long omap_twl_vsel_to_uv(const u8 vsel)
+{
+ return (((vsel * 125) + 6000)) * 100;
+}
+
+/**
+ * omap_twl_uv_to_vsel - convert microvolts DC to TWL/TPS VSEL value
+ * @uv: microvolts DC to convert
+ *
+ * Returns the VSEL value necessary for the TWL/TPS family of PMICs to
+ * generate an output voltage equal to or greater than @uv microvolts DC.
+ */
+u8 omap_twl_uv_to_vsel(unsigned long uv)
+{
+ /* Round up to higher voltage */
+ return DIV_ROUND_UP(uv - 60, 12500);
+}
--
1.7.2.1
--
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[PATCH 2/4] omap: opp: twl/tps: Introduce TWL/TPS-specific code
From: Paul Walmsley p...@pwsan.com
The OPP layer code should be independent of the PMIC,
introduce the TWL/TPS-specific code out to its own file.
Signed-off-by: Paul Walmsley p...@pwsan.com
Signed-off-by: Romit Dasgupta ro...@ti.com
Signed-off-by: Phil Carmody ext-phil.2.carm...@nokia.com
Signed-off-by: Nishanth Menon n...@ti.com
Signed-off-by: Kevin Hilman khil...@deeprootsystems.com
---
arch/arm/plat-omap/Makefile |1 +
arch/arm/plat-omap/include/plat/opp_twl_tps.h | 21 +
arch/arm/plat-omap/opp_twl_tps.c | 41 +
3 files changed, 63 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/plat-omap/include/plat/opp_twl_tps.h
create mode 100644 arch/arm/plat-omap/opp_twl_tps.c
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index 70b012d..faf831d 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o
# OPP support in (OMAP3+ only at the moment)
ifdef CONFIG_CPU_FREQ
obj-$(CONFIG_ARCH_OMAP3) += opp.o
+obj-$(CONFIG_TWL4030_CORE) += opp_twl_tps.o
endif
# omap_device support (OMAP2+ only at the moment)
diff --git a/arch/arm/plat-omap/include/plat/opp_twl_tps.h
b/arch/arm/plat-omap/include/plat/opp_twl_tps.h
new file mode 100644
index 000..8784e5f
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/opp_twl_tps.h
@@ -0,0 +1,21 @@
+/*
+ * opp_twl_tps.h - TWL/TPS-specific headers for the OPP code
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated.
+ * Nishanth Menon
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * XXX This code belongs as part of some other TWL/TPS code.
+ */
+#ifndef _ARCH_ARM_PLAT_OMAP_OPP_TWL_TPS_H
+#define _ARCH_ARM_PLAT_OMAP_OPP_TWL_TPS_H
+
+#include linux/kernel.h
+
+unsigned long omap_twl_vsel_to_uv(const u8 vsel);
+u8 omap_twl_uv_to_vsel(unsigned long uV);
+
+#endif
diff --git a/arch/arm/plat-omap/opp_twl_tps.c b/arch/arm/plat-omap/opp_twl_tps.c
new file mode 100644
index 000..112f106
--- /dev/null
+++ b/arch/arm/plat-omap/opp_twl_tps.c
@@ -0,0 +1,41 @@
+/*
+ * opp_twl_tps.c - TWL/TPS-specific functions for the OPP code
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated.
+ * Nishanth Menon
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * XXX This code should be part of some other TWL/TPS code.
+ */
+
+#include plat/opp_twl_tps.h
+
+/**
+ * omap_twl_vsel_to_vdc - convert TWL/TPS VSEL value to microvolts DC
+ * @vsel: TWL/TPS VSEL value to convert
+ *
+ * Returns the microvolts DC that the TWL/TPS family of PMICs should
+ * generate when programmed with @vsel.
+ */
+unsigned long omap_twl_vsel_to_uv(const u8 vsel)
+{
+ return (((vsel * 125) + 6000)) * 100;
+}
+
+/**
+ * omap_twl_uv_to_vsel - convert microvolts DC to TWL/TPS VSEL value
+ * @uv: microvolts DC to convert
+ *
+ * Returns the VSEL value necessary for the TWL/TPS family of PMICs to
+ * generate an output voltage equal to or greater than @uv microvolts DC.
+ */
+u8 omap_twl_uv_to_vsel(unsigned long uv)
+{
+ /* Round up to higher voltage */
+ return DIV_ROUND_UP(uv - 60, 12500);
+}
--
1.7.2.1
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