From: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
To: Marco Felsch <m.felsch@pengutronix.de>,
Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Cc: Support Opensource <Support.Opensource@diasemi.com>,
"lee.jones@linaro.org" <lee.jones@linaro.org>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"lgirdwood@gmail.com" <lgirdwood@gmail.com>,
"broonie@kernel.org" <broonie@kernel.org>,
Steve Twiss <stwiss.opensource@diasemi.com>,
"kernel@pengutronix.de" <kernel@pengutronix.de>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH 1/5] regulator: da9062: fix suspend_enable/disable preparation
Date: Tue, 24 Sep 2019 08:58:30 +0000 [thread overview]
Message-ID: <AM5PR1001MB09949AE859F5FA8173A361DE80840@AM5PR1001MB0994.EURPRD10.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <20190923220239.bcir5hjuqxti5b5e@pengutronix.de>
On 23 September 2019 23:03, Marco Felsch wrote:
> Hi Adam,
>
> On 19-09-23 16:03, Adam Thomson wrote:
> > On 17 September 2019 13:43, Marco Felsch wrote:
> >
> > > Currently the suspend reg_field maps to the pmic voltage selection bits
> > > and is used during suspend_enabe/disable() and during get_mode(). This
> > > seems to be wrong for both use cases.
> > >
> > > Use case one (suspend_enabe/disable):
> > > Those callbacks are used to mark a regulator device as enabled/disabled
> > > during suspend. Marking the regulator enabled during suspend is done by
> > > the LDOx_CONF/BUCKx_CONF bit within the LDOx_CONT/BUCKx_CONT
> > > registers.
> > > Setting this bit tells the DA9062 PMIC state machine to keep the
> > > regulator on in POWERDOWN mode and switch to suspend voltage.
> > >
> > > Use case two (get_mode):
> > > The get_mode callback is used to retrieve the active mode state. Since
> > > the regulator-setting-A is used for the active state and
> > > regulator-setting-B for the suspend state there is no need to check
> > > which regulator setting is active.
> > >
> >
> > So I believe you're correct with the above statements. The driver, rather than
> > enabling/disabling a regulator in system suspend, will instead put the regulator
> > to a low power state, which is definitely not the desired outcome. Thanks for
> > rectifying this.
> >
> > Reviewed-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
>
> Thanks a lot for reviewing the patch :) Can you also have a look on the
> other patches within this series?
Yes, I will take a look at those next. :)
>
> Regards,
> Marco
>
> > > Fixes: 4068e5182ada ("regulator: da9062: DA9062 regulator driver")
> > > Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
> > > ---
> > > drivers/regulator/da9062-regulator.c | 118 +++++++++++----------------
> > > 1 file changed, 47 insertions(+), 71 deletions(-)
> > >
> > > diff --git a/drivers/regulator/da9062-regulator.c b/drivers/regulator/da9062-
> > > regulator.c
> > > index 2ffc64622451..9b2ca472f70c 100644
> > > --- a/drivers/regulator/da9062-regulator.c
> > > +++ b/drivers/regulator/da9062-regulator.c
> > > @@ -136,7 +136,6 @@ static int da9062_buck_set_mode(struct
> regulator_dev
> > > *rdev, unsigned mode)
> > > static unsigned da9062_buck_get_mode(struct regulator_dev *rdev)
> > > {
> > > struct da9062_regulator *regl = rdev_get_drvdata(rdev);
> > > - struct regmap_field *field;
> > > unsigned int val, mode = 0;
> > > int ret;
> > >
> > > @@ -158,18 +157,7 @@ static unsigned da9062_buck_get_mode(struct
> > > regulator_dev *rdev)
> > > return REGULATOR_MODE_NORMAL;
> > > }
> > >
> > > - /* Detect current regulator state */
> > > - ret = regmap_field_read(regl->suspend, &val);
> > > - if (ret < 0)
> > > - return 0;
> > > -
> > > - /* Read regulator mode from proper register, depending on state */
> > > - if (val)
> > > - field = regl->suspend_sleep;
> > > - else
> > > - field = regl->sleep;
> > > -
> > > - ret = regmap_field_read(field, &val);
> > > + ret = regmap_field_read(regl->sleep, &val);
> > > if (ret < 0)
> > > return 0;
> > >
> > > @@ -208,21 +196,9 @@ static int da9062_ldo_set_mode(struct regulator_dev
> > > *rdev, unsigned mode)
> > > static unsigned da9062_ldo_get_mode(struct regulator_dev *rdev)
> > > {
> > > struct da9062_regulator *regl = rdev_get_drvdata(rdev);
> > > - struct regmap_field *field;
> > > int ret, val;
> > >
> > > - /* Detect current regulator state */
> > > - ret = regmap_field_read(regl->suspend, &val);
> > > - if (ret < 0)
> > > - return 0;
> > > -
> > > - /* Read regulator mode from proper register, depending on state */
> > > - if (val)
> > > - field = regl->suspend_sleep;
> > > - else
> > > - field = regl->sleep;
> > > -
> > > - ret = regmap_field_read(field, &val);
> > > + ret = regmap_field_read(regl->sleep, &val);
> > > if (ret < 0)
> > > return 0;
> > >
> > > @@ -408,10 +384,10 @@ static const struct da9062_regulator_info
> > > local_da9061_regulator_info[] = {
> > > __builtin_ffs((int)DA9062AA_BUCK1_MODE_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_BUCK1_MODE_MASK)) - 1),
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VBUCK1_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_BUCK1_CONT,
> > > + __builtin_ffs((int)DA9062AA_BUCK1_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VBUCK1_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_BUCK1_CONF_MASK) - 1),
> > > },
> > > {
> > > .desc.id = DA9061_ID_BUCK2,
> > > @@ -444,10 +420,10 @@ static const struct da9062_regulator_info
> > > local_da9061_regulator_info[] = {
> > > __builtin_ffs((int)DA9062AA_BUCK3_MODE_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_BUCK3_MODE_MASK)) - 1),
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VBUCK3_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_BUCK3_CONT,
> > > + __builtin_ffs((int)DA9062AA_BUCK3_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VBUCK3_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_BUCK3_CONF_MASK) - 1),
> > > },
> > > {
> > > .desc.id = DA9061_ID_BUCK3,
> > > @@ -480,10 +456,10 @@ static const struct da9062_regulator_info
> > > local_da9061_regulator_info[] = {
> > > __builtin_ffs((int)DA9062AA_BUCK4_MODE_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_BUCK4_MODE_MASK)) - 1),
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VBUCK4_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_BUCK4_CONT,
> > > + __builtin_ffs((int)DA9062AA_BUCK4_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VBUCK4_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_BUCK4_CONF_MASK) - 1),
> > > },
> > > {
> > > .desc.id = DA9061_ID_LDO1,
> > > @@ -509,10 +485,10 @@ static const struct da9062_regulator_info
> > > local_da9061_regulator_info[] = {
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_LDO1_SL_B_MASK)) - 1),
> > > .suspend_vsel_reg = DA9062AA_VLDO1_B,
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VLDO1_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_LDO1_CONT,
> > > + __builtin_ffs((int)DA9062AA_LDO1_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VLDO1_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_LDO1_CONF_MASK) - 1),
> > > .oc_event = REG_FIELD(DA9062AA_STATUS_D,
> > > __builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > @@ -542,10 +518,10 @@ static const struct da9062_regulator_info
> > > local_da9061_regulator_info[] = {
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_LDO2_SL_B_MASK)) - 1),
> > > .suspend_vsel_reg = DA9062AA_VLDO2_B,
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VLDO2_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_LDO2_CONT,
> > > + __builtin_ffs((int)DA9062AA_LDO2_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VLDO2_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_LDO2_CONF_MASK) - 1),
> > > .oc_event = REG_FIELD(DA9062AA_STATUS_D,
> > > __builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > @@ -575,10 +551,10 @@ static const struct da9062_regulator_info
> > > local_da9061_regulator_info[] = {
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_LDO3_SL_B_MASK)) - 1),
> > > .suspend_vsel_reg = DA9062AA_VLDO3_B,
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VLDO3_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_LDO3_CONT,
> > > + __builtin_ffs((int)DA9062AA_LDO3_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VLDO3_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_LDO3_CONF_MASK) - 1),
> > > .oc_event = REG_FIELD(DA9062AA_STATUS_D,
> > > __builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > @@ -608,10 +584,10 @@ static const struct da9062_regulator_info
> > > local_da9061_regulator_info[] = {
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_LDO4_SL_B_MASK)) - 1),
> > > .suspend_vsel_reg = DA9062AA_VLDO4_B,
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VLDO4_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_LDO4_CONT,
> > > + __builtin_ffs((int)DA9062AA_LDO4_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VLDO4_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_LDO4_CONF_MASK) - 1),
> > > .oc_event = REG_FIELD(DA9062AA_STATUS_D,
> > > __builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > @@ -652,10 +628,10 @@ static const struct da9062_regulator_info
> > > local_da9062_regulator_info[] = {
> > > __builtin_ffs((int)DA9062AA_BUCK1_MODE_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_BUCK1_MODE_MASK)) - 1),
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VBUCK1_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_BUCK1_CONT,
> > > + __builtin_ffs((int)DA9062AA_BUCK1_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VBUCK1_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_BUCK1_CONF_MASK) - 1),
> > > },
> > > {
> > > .desc.id = DA9062_ID_BUCK2,
> > > @@ -688,10 +664,10 @@ static const struct da9062_regulator_info
> > > local_da9062_regulator_info[] = {
> > > __builtin_ffs((int)DA9062AA_BUCK2_MODE_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_BUCK2_MODE_MASK)) - 1),
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VBUCK2_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_BUCK2_CONT,
> > > + __builtin_ffs((int)DA9062AA_BUCK2_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VBUCK2_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_BUCK2_CONF_MASK) - 1),
> > > },
> > > {
> > > .desc.id = DA9062_ID_BUCK3,
> > > @@ -724,10 +700,10 @@ static const struct da9062_regulator_info
> > > local_da9062_regulator_info[] = {
> > > __builtin_ffs((int)DA9062AA_BUCK3_MODE_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_BUCK3_MODE_MASK)) - 1),
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VBUCK3_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_BUCK3_CONT,
> > > + __builtin_ffs((int)DA9062AA_BUCK3_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VBUCK3_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_BUCK3_CONF_MASK) - 1),
> > > },
> > > {
> > > .desc.id = DA9062_ID_BUCK4,
> > > @@ -760,10 +736,10 @@ static const struct da9062_regulator_info
> > > local_da9062_regulator_info[] = {
> > > __builtin_ffs((int)DA9062AA_BUCK4_MODE_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_BUCK4_MODE_MASK)) - 1),
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VBUCK4_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_BUCK4_CONT,
> > > + __builtin_ffs((int)DA9062AA_BUCK4_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VBUCK4_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_BUCK4_CONF_MASK) - 1),
> > > },
> > > {
> > > .desc.id = DA9062_ID_LDO1,
> > > @@ -789,10 +765,10 @@ static const struct da9062_regulator_info
> > > local_da9062_regulator_info[] = {
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_LDO1_SL_B_MASK)) - 1),
> > > .suspend_vsel_reg = DA9062AA_VLDO1_B,
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VLDO1_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_LDO1_CONT,
> > > + __builtin_ffs((int)DA9062AA_LDO1_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VLDO1_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_LDO1_CONF_MASK) - 1),
> > > .oc_event = REG_FIELD(DA9062AA_STATUS_D,
> > > __builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > @@ -822,10 +798,10 @@ static const struct da9062_regulator_info
> > > local_da9062_regulator_info[] = {
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_LDO2_SL_B_MASK)) - 1),
> > > .suspend_vsel_reg = DA9062AA_VLDO2_B,
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VLDO2_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_LDO2_CONT,
> > > + __builtin_ffs((int)DA9062AA_LDO2_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VLDO2_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_LDO2_CONF_MASK) - 1),
> > > .oc_event = REG_FIELD(DA9062AA_STATUS_D,
> > > __builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > @@ -855,10 +831,10 @@ static const struct da9062_regulator_info
> > > local_da9062_regulator_info[] = {
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_LDO3_SL_B_MASK)) - 1),
> > > .suspend_vsel_reg = DA9062AA_VLDO3_B,
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VLDO3_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_LDO3_CONT,
> > > + __builtin_ffs((int)DA9062AA_LDO3_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VLDO3_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_LDO3_CONF_MASK) - 1),
> > > .oc_event = REG_FIELD(DA9062AA_STATUS_D,
> > > __builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > @@ -888,10 +864,10 @@ static const struct da9062_regulator_info
> > > local_da9062_regulator_info[] = {
> > > sizeof(unsigned int) * 8 -
> > > __builtin_clz((DA9062AA_LDO4_SL_B_MASK)) - 1),
> > > .suspend_vsel_reg = DA9062AA_VLDO4_B,
> > > - .suspend = REG_FIELD(DA9062AA_DVC_1,
> > > - __builtin_ffs((int)DA9062AA_VLDO4_SEL_MASK) - 1,
> > > + .suspend = REG_FIELD(DA9062AA_LDO4_CONT,
> > > + __builtin_ffs((int)DA9062AA_LDO4_CONF_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > - __builtin_clz((DA9062AA_VLDO4_SEL_MASK)) - 1),
> > > + __builtin_clz(DA9062AA_LDO4_CONF_MASK) - 1),
> > > .oc_event = REG_FIELD(DA9062AA_STATUS_D,
> > > __builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1,
> > > sizeof(unsigned int) * 8 -
> > > --
> > > 2.20.1
> >
> >
>
> --
> Pengutronix e.K. | |
> Industrial Linux Solutions | http://www.pengutronix.de/ |
> Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
> Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
next prev parent reply other threads:[~2019-09-24 8:58 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-17 12:42 [PATCH 0/5] DA9062 PMIC fixes and features Marco Felsch
2019-09-17 12:42 ` [PATCH 1/5] regulator: da9062: fix suspend_enable/disable preparation Marco Felsch
2019-09-18 12:41 ` Adam Thomson
2019-09-18 15:05 ` Marco Felsch
2019-09-23 16:03 ` Adam Thomson
2019-09-23 22:02 ` Marco Felsch
2019-09-24 8:58 ` Adam Thomson [this message]
2019-09-23 21:23 ` Applied "regulator: da9062: fix suspend_enable/disable preparation" to the regulator tree Mark Brown
2019-09-17 12:42 ` [PATCH 2/5] dt-bindings: mfd: da9062: add regulator voltage selection documentation Marco Felsch
2019-09-24 9:23 ` Adam Thomson
2019-09-25 15:51 ` Marco Felsch
2019-09-25 16:18 ` Adam Thomson
2019-09-26 8:09 ` Marco Felsch
2019-09-26 10:17 ` Adam Thomson
2019-09-26 11:43 ` Marco Felsch
2019-09-26 14:04 ` Adam Thomson
2019-09-26 14:38 ` Marco Felsch
2019-09-30 9:53 ` Adam Thomson
2019-10-02 13:45 ` Marco Felsch
2019-10-22 10:22 ` Marco Felsch
2019-09-17 12:42 ` [PATCH 3/5] regulator: da9062: add voltage selection gpio support Marco Felsch
2019-09-17 14:22 ` kbuild test robot
2019-09-17 14:34 ` Marco Felsch
2019-09-24 9:48 ` Adam Thomson
2019-09-25 15:59 ` Marco Felsch
2019-10-04 19:41 ` Linus Walleij
2019-10-07 8:59 ` Marco Felsch
2019-09-17 12:42 ` [PATCH 4/5] dt-bindings: mfd: da9062: add regulator gpio enable/disable documentation Marco Felsch
2019-09-17 12:42 ` [PATCH 5/5] regulator: da9062: add gpio based regulator dis-/enable support Marco Felsch
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