On Tuesday 17 May 2016 01:31 PM, Lee Jones wrote:

On Fri, 13 May 2016, Keerthy wrote:

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On Thursday 12 May 2016 06:48 PM, Lee Jones wrote:

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On Tue, 10 May 2016, Keerthy wrote:

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The LP873X chip is a power management IC for Portable Navigation Systems
     and Tablet Computing devices. It contains the following components:

      - Regulators.
      - Configurable General Purpose Output Signals(GPO).

PMIC interacts with the main processor through i2c. PMIC has
couple of LDOs(Linear Regulators), couple of BUCKs (Step-Down DC-DC
Converter Cores) and GPOs(General Purpose Output Signals). At this
time only the regulator functionality is made available.

Signed-off-by: Keerthy <j-keerthy@ti.com>
---

Changes in v2:

   * Used mfd_add_devices instead of of_pltaform_populate.

Didn't see this conversation, but of_platform_populate () is usually
okay?

https://lkml.org/lkml/2016/5/6/244.

Did Mark tell you why you shouldn't be using it?

"You shouldn't be using that, you should just have a table of subdevices
in the MFD"

I inferred not to use of_platform_populate and make use of 
mfd_add_devices instead.

Please correct me if am wrong.

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  drivers/mfd/Kconfig        |  15 +++
  drivers/mfd/Makefile       |   2 +
  drivers/mfd/lp873x.c       |  98 +++++++++++++++++
  include/linux/mfd/lp873x.h | 265 +++++++++++++++++++++++++++++++++++++++++++++
  4 files changed, 380 insertions(+)
  create mode 100644 drivers/mfd/lp873x.c
  create mode 100644 include/linux/mfd/lp873x.h

[...]

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+/**
+ * struct lp873x - state holder for the lp873x driver
+ * Device data may be used to access the LP873X chip
+ */
+struct lp873x {
+	struct device *dev;
+	unsigned long id;
+	u8 rev;
+	struct mutex lp873_lock;	/* lock guarding the data structure */
+	struct regmap *regmap;

Are all of these used in >1 driver?

Apart from id and rev all are used.

Then why are id and rev in there?