[PATCH 5/7] backports: add support for voltage / current regulator drivers

From: Luis R. Rodriguez
Date: Sat Apr 13 2013 - 10:14:17 EST

From: "Luis R. Rodriguez" <mcgrof@xxxxxxxxxxxxxxxx>

This backports the latest regulator drivers for kernels >= 3.4.
We enable the regulator only on kernels >= 3.4 given that
it relies on the new probe deferral mechanism which would
otherwise mean having to support drivers that do not probe
correctly. Note that 3.2 had a base regulator implementation
but that was just stubs.

I did look into a way to upgrade the core kernel regulator
but given that it relies on late_initcall() and core_initcall()
we can't update this part of the kernel. I even looked at
using ksplice for this but it seems ksplice can't be used to
update init sections on the vmlinux ELF. I also haven't much
updates to these routines since 3.4 except for 86f5fcfc.

1 2.6.24 [ OK ]
2 2.6.25 [ OK ]
3 2.6.26 [ OK ]
4 2.6.27 [ OK ]
5 2.6.28 [ OK ]
6 2.6.29 [ OK ]
7 2.6.30 [ OK ]
8 2.6.31 [ OK ]
9 2.6.32 [ OK ]
10 2.6.33 [ OK ]
11 2.6.34 [ OK ]
12 2.6.35 [ OK ]
13 2.6.36 [ OK ]
14 2.6.37 [ OK ]
15 2.6.38 [ OK ]
16 2.6.39 [ OK ]
17 3.0.65 [ OK ]
18 3.1.10 [ OK ]
19 3.2.38 [ OK ]
20 3.3.8 [ OK ]
21 3.4.32 [ OK ]
22 3.5.7 [ OK ]
23 3.6.11 [ OK ]
24 3.7.9 [ OK ]
25 3.8.0 [ OK ]
26 3.9-rc1 [ OK ]

real 39m35.615s
user 1068m47.428s
sys 155m55.657s

Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxxxxxxxxx>
---
backport/Kconfig | 2 +
backport/Makefile.kernel | 1 +
backport/defconfigs/regulator | 63 ++++++++++++++++++
copy-list | 33 ++++++++++
dependencies | 27 ++++++++
.../regulator/0001-bt8xx-rename-dst-ops.patch | 67 ++++++++++++++++++++
6 files changed, 193 insertions(+)
create mode 100644 backport/defconfigs/regulator
create mode 100644 patches/collateral-evolutions/regulator/0001-bt8xx-rename-dst-ops.patch

diff --git a/backport/Kconfig b/backport/Kconfig
index 6ab0991..6088bfe 100644
--- a/backport/Kconfig
+++ b/backport/Kconfig
@@ -38,3 +38,5 @@ source drivers/bcma/Kconfig
source drivers/gpu/drm/Kconfig

source net/nfc/Kconfig
+
+source drivers/regulator/Kconfig
diff --git a/backport/Makefile.kernel b/backport/Makefile.kernel
index 59e95ef..2741cc9 100644
--- a/backport/Makefile.kernel
+++ b/backport/Makefile.kernel
@@ -31,3 +31,4 @@ obj-$(CPTCFG_ETHERNET) += drivers/net/ethernet/
obj-$(CPTCFG_DRM) += drivers/gpu/drm/
obj-$(CPTCFG_NFC) += net/nfc/
obj-$(CPTCFG_NFC) += drivers/nfc/
+obj-$(CPTCFG_REGULATOR) += drivers/regulator/
diff --git a/backport/defconfigs/regulator b/backport/defconfigs/regulator
new file mode 100644
index 0000000..c080747
--- /dev/null
+++ b/backport/defconfigs/regulator
@@ -0,0 +1,63 @@
+CPTCFG_REGULATOR=y
+CPTCFG_REGULATOR_88PM8607=y
+CPTCFG_REGULATOR_AAT2870=y
+CPTCFG_REGULATOR_AB3100=y
+CPTCFG_REGULATOR_AB8500=y
+CPTCFG_REGULATOR_AD5398=y
+CPTCFG_REGULATOR_ANATOP=y
+CPTCFG_REGULATOR_ARIZONA=y
+CPTCFG_REGULATOR_AS3711=y
+CPTCFG_REGULATOR_DA903X=y
+CPTCFG_REGULATOR_DA9052=y
+CPTCFG_REGULATOR_DA9055=y
+CPTCFG_REGULATOR_DB8500_PRCMU=y
+CPTCFG_REGULATOR_DBX500_PRCMU=y
+CPTCFG_REGULATOR_DEBUG=y
+CPTCFG_REGULATOR_FAN53555=y
+CPTCFG_REGULATOR_FIXED_VOLTAGE=y
+CPTCFG_REGULATOR_GPIO=y
+CPTCFG_REGULATOR_ISL6271A=y
+CPTCFG_REGULATOR_LP3971=y
+CPTCFG_REGULATOR_LP3972=y
+CPTCFG_REGULATOR_LP872X=y
+CPTCFG_REGULATOR_LP8755=y
+CPTCFG_REGULATOR_LP8788=y
+CPTCFG_REGULATOR_MAX1586=y
+CPTCFG_REGULATOR_MAX77686=y
+CPTCFG_REGULATOR_MAX8649=y
+CPTCFG_REGULATOR_MAX8660=y
+CPTCFG_REGULATOR_MAX8907=y
+CPTCFG_REGULATOR_MAX8925=y
+CPTCFG_REGULATOR_MAX8952=y
+CPTCFG_REGULATOR_MAX8973=y
+CPTCFG_REGULATOR_MAX8997=y
+CPTCFG_REGULATOR_MAX8998=y
+CPTCFG_REGULATOR_MC13783=y
+CPTCFG_REGULATOR_MC13892=y
+CPTCFG_REGULATOR_MC13XXX_CORE=y
+CPTCFG_REGULATOR_PALMAS=y
+CPTCFG_REGULATOR_PCAP=y
+CPTCFG_REGULATOR_PCF50633=y
+CPTCFG_REGULATOR_RC5T583=y
+CPTCFG_REGULATOR_S2MPS11=y
+CPTCFG_REGULATOR_S5M8767=y
+CPTCFG_REGULATOR_TPS51632=y
+CPTCFG_REGULATOR_TPS6105X=y
+CPTCFG_REGULATOR_TPS62360=y
+CPTCFG_REGULATOR_TPS65023=y
+CPTCFG_REGULATOR_TPS6507X=y
+CPTCFG_REGULATOR_TPS65090=y
+CPTCFG_REGULATOR_TPS65217=y
+CPTCFG_REGULATOR_TPS6524X=y
+CPTCFG_REGULATOR_TPS6586X=y
+CPTCFG_REGULATOR_TPS65910=y
+CPTCFG_REGULATOR_TPS65912=y
+CPTCFG_REGULATOR_TPS80031=y
+CPTCFG_REGULATOR_TWL4030=y
+CPTCFG_REGULATOR_USERSPACE_CONSUMER=y
+CPTCFG_REGULATOR_VEXPRESS=y
+CPTCFG_REGULATOR_VIRTUAL_CONSUMER=y
+CPTCFG_REGULATOR_WM831X=y
+CPTCFG_REGULATOR_WM8350=y
+CPTCFG_REGULATOR_WM8400=y
+CPTCFG_REGULATOR_WM8994=y
diff --git a/copy-list b/copy-list
index e8b1241..9771c43 100644
--- a/copy-list
+++ b/copy-list
@@ -135,3 +135,36 @@ drivers/nfc/
drivers/nfc/microread/
drivers/nfc/pn544/
include/linux/platform_data/pn544.h
+
+# Regulator
+# we don't include the whole directory as we need
+# rely on your core regulator implementation given that
+# it relies on late_initcall() and core_initcall() and
+# these can't be backported, as such we need to rely
+# on your base kernel regulator implementatin and can
+# only extend it with further exports. Your core
+# regulator routines are defined via the header file
+# include/linux/regulator/consumer.h and dummy.h
+include/linux/regulator/ab8500.h
+include/linux/regulator/db8500-prcmu.h
+include/linux/regulator/driver.h
+include/linux/regulator/fan53555.h
+include/linux/regulator/fixed.h
+include/linux/regulator/gpio-regulator.h
+include/linux/regulator/lp3971.h
+include/linux/regulator/lp3972.h
+include/linux/regulator/lp872x.h
+include/linux/regulator/machine.h
+include/linux/regulator/max1586.h
+include/linux/regulator/max8649.h
+include/linux/regulator/max8660.h
+include/linux/regulator/max8952.h
+include/linux/regulator/max8973-regulator.h
+include/linux/regulator/of_regulator.h
+include/linux/regulator/tps51632-regulator.h
+include/linux/regulator/tps62360.h
+include/linux/regulator/tps6507x.h
+include/linux/regulator/userspace-consumer.h
+include/linux/platform_data/lp8755.h
+
+drivers/regulator/
diff --git a/dependencies b/dependencies
index 44e23da..0ab99d4 100644
--- a/dependencies
+++ b/dependencies
@@ -46,6 +46,28 @@ HDMI 3.2
DRM 3.2
DRM_TTM 3.2

+# Regulator
+# Because of -EPROBE_DEFER see commit d1c3414c and note that
+# we can't backport the core regulator as its part of the core
+# vmlinux.
+REGULATOR 3.4
+# requires some work
+REGULATOR_ARIZONA DISABLE
+REGULATOR_MAX8973 DISABLE
+REGULATOR_MAX77686 DISABLE
+REGULATOR_MAX8997 DISABLE
+REGULATOR_RC5T583 DISABLE
+REGULATOR_TPS62360 DISABLE
+REGULATOR_TPS65910 DISABLE
+REGULATOR_TPS65090 DISABLE
+REGULATOR_TPS65217 DISABLE
+REGULATOR_TPS6586X DISABLE
+REGULATOR_WM831X DISABLE
+REGULATOR_WM8350 DISABLE
+REGULATOR_PALMAS DISABLE
+REGULATOR_DA9055 DISABLE
+REGULATOR_S5M8767 DISABLE
+
# This requires proc_create(), and that doesn't exist before 2.6.24
LIBIPW_DEBUG 2.6.25

@@ -71,6 +93,11 @@ BCMA_DRIVER_GPIO 3.0
# (rfkill-regulator.h) that we don't backport
# right now, so make it depend on 3.0
RFKILL_REGULATOR 3.0
+# drivers/regulator/ab3100.c and drivers/mfd/ab3100-core.c
+# both depend on include/linux/mfd/ab3100.h and we should
+# only backport REGULATOR_AB3100 if the mfd driver is
+# backported as well.
+REGULATOR_AB3100 3.9

# This is a fun one ... the implementation of this
# uses subdir-ccflags-$(CONFIG_BRCMDBG) which was
diff --git a/patches/collateral-evolutions/regulator/0001-bt8xx-rename-dst-ops.patch b/patches/collateral-evolutions/regulator/0001-bt8xx-rename-dst-ops.patch
new file mode 100644
index 0000000..2e8e1b3
--- /dev/null
+++ b/patches/collateral-evolutions/regulator/0001-bt8xx-rename-dst-ops.patch
@@ -0,0 +1,67 @@
+This will be sent upstream... there is a conflict with these
+names and another symbol from older kernels.
+
+--- a/drivers/media/pci/bt8xx/dst.c
++++ b/drivers/media/pci/bt8xx/dst.c
+@@ -1544,7 +1544,7 @@ static int dst_send_burst(struct dvb_fro
+ }
+
+
+-static int dst_init(struct dvb_frontend *fe)
++static int bt8xx_dst_init(struct dvb_frontend *fe)
+ {
+ struct dst_state *state = fe->demodulator_priv;
+
+@@ -1707,7 +1707,7 @@ static int dst_get_frontend(struct dvb_f
+ return 0;
+ }
+
+-static void dst_release(struct dvb_frontend *fe)
++static void bt8xx_dst_release(struct dvb_frontend *fe)
+ {
+ struct dst_state *state = fe->demodulator_priv;
+ if (state->dst_ca) {
+@@ -1776,8 +1776,8 @@ static struct dvb_frontend_ops dst_dvbt_
+ FE_CAN_GUARD_INTERVAL_AUTO
+ },
+
+- .release = dst_release,
+- .init = dst_init,
++ .release = bt8xx_dst_release,
++ .init = bt8xx_dst_init,
+ .tune = dst_tune_frontend,
+ .set_frontend = dst_set_frontend,
+ .get_frontend = dst_get_frontend,
+@@ -1801,8 +1801,8 @@ static struct dvb_frontend_ops dst_dvbs_
+ .caps = FE_CAN_FEC_AUTO | FE_CAN_QPSK
+ },
+
+- .release = dst_release,
+- .init = dst_init,
++ .release = bt8xx_dst_release,
++ .init = bt8xx_dst_init,
+ .tune = dst_tune_frontend,
+ .set_frontend = dst_set_frontend,
+ .get_frontend = dst_get_frontend,
+@@ -1834,8 +1834,8 @@ static struct dvb_frontend_ops dst_dvbc_
+ FE_CAN_QAM_256
+ },
+
+- .release = dst_release,
+- .init = dst_init,
++ .release = bt8xx_dst_release,
++ .init = bt8xx_dst_init,
+ .tune = dst_tune_frontend,
+ .set_frontend = dst_set_frontend,
+ .get_frontend = dst_get_frontend,
+@@ -1857,8 +1857,8 @@ static struct dvb_frontend_ops dst_atsc_
+ .caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO | FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
+ },
+
+- .release = dst_release,
+- .init = dst_init,
++ .release = bt8xx_dst_release,
++ .init = bt8xx_dst_init,
+ .tune = dst_tune_frontend,
+ .set_frontend = dst_set_frontend,
+ .get_frontend = dst_get_frontend,
--
1.7.10.4

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