Re: [PATCH v4 4/4] pmbus: ltc2978: add regulator support

From: Guenter Roeck
Date: Wed Oct 01 2014 - 21:26:35 EST


On 10/01/2014 03:20 PM, atull wrote:
On Wed, 1 Oct 2014, Guenter Roeck wrote:

On Wed, Oct 01, 2014 at 03:18:20PM -0500, atull@xxxxxxxxxxxxxxxxxxxxx wrote:
From: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx>

Add simple on/off regulator support for ltc2978 and
other pmbus parts supported by ltc2978.c

Signed-off-by: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx>

v2: Remove '#include <linux/regulator/machine.h>'
Only one regulator per pmbus device
Get regulator_init_data from pdata or device tree

v3: Support multiple regulators for each chip
Move most code to pmbus_core.c
fixed values for on/off

v4: fix a #endif comment
simplify probe code, remove added switch statement
remove BUG_ON(), add error message and fix num_regulators
---
drivers/hwmon/pmbus/Kconfig | 7 +++++++
drivers/hwmon/pmbus/ltc2978.c | 37 +++++++++++++++++++++++++++++++++++++
2 files changed, 44 insertions(+)

diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 6e1e493..79117b7 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -56,6 +56,13 @@ config SENSORS_LTC2978
This driver can also be built as a module. If so, the module will
be called ltc2978.

+config SENSORS_LTC2978_REGULATOR
+ boolean "Regulator support for LTC2974, LTC2978, LTC3880, and LTC3883"

We will need to update this and SENSORS_LTC2978 and add LTC2977 as well as
LTM4646 to the list of supported chips.

Guenter

I will add the whole list to the 'help' sections of SENSORS_LTC2978 and
SENSORS_LTC2978_REGULATOR.

For the tristate/boolean lines, I can't fit the whole list, so I will
leave them as they are. Or I could change to 'LTC2978 and compatibles' as
many others in this Kconfig have.

Yes, that makes sense.

Thanks,
Guenter

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