Re: [PATCH v4 2/3] iio: DAC extension for ltc2634-12/10/8

Chris Ruehl <chris.ruehl@xxxxxxxxxxxx> · Thu, 16 Apr 2020 15:14:10 +0800

Hi,

On 16/4/2020 2:56 pm, Uwe Kleine-König wrote:
Hello,

dropped stefan.popa@xxxxxxxxxx from recipents as the address bounces for
me.
the maintainer script added this email automatically , I will remove it
in the future mails.

Thanks.


On Thu, Apr 16, 2020 at 09:20:10AM +0800, Chris Ruehl wrote:
This patch add support for Analog Devices (Linear Technology)
LTC2634 Quad 12-/10-/8-Bit Rail-to-Rail DAC.
The SPI functionality based on them from LTC2632 therefor
add the definitions only and update the Kconfig.

Signed-off-by: Chris Ruehl <chris.ruehl@xxxxxxxxxxxx>
---
v4:
-hide version from commit text
v3:
-Consistens decimal separator in help text
v2:
-Send the documentation fix in a extra patch
-Kconfig simplify the driver description, details to the help text
-ltc2632.txt add to this patch-set (prepare to convert to yaml)

  .../devicetree/bindings/iio/dac/ltc2632.txt   |  8 ++-
  drivers/iio/dac/Kconfig                       |  6 +-
  drivers/iio/dac/ltc2632.c                     | 60 +++++++++++++++++++
  3 files changed, 70 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/dac/ltc2632.txt b/Documentation/devicetree/bindings/iio/dac/ltc2632.txt
index 338c3220f01a..1ab9570cf219 100644
--- a/Documentation/devicetree/bindings/iio/dac/ltc2632.txt
+++ b/Documentation/devicetree/bindings/iio/dac/ltc2632.txt
@@ -1,4 +1,4 @@
-Linear Technology LTC2632/2636 DAC
+Linear Technology LTC2632/2634/2636 DAC
  
  Required properties:
   - compatible: Has to contain one of the following:
@@ -8,6 +8,12 @@ Required properties:
  	lltc,ltc2632-h12
  	lltc,ltc2632-h10
  	lltc,ltc2632-h8
+	lltc,ltc2634-l12
+	lltc,ltc2634-l10
+	lltc,ltc2634-l8
+	lltc,ltc2634-h12
+	lltc,ltc2634-h10
+	lltc,ltc2634-h8
  	lltc,ltc2636-l12
  	lltc,ltc2636-l10
  	lltc,ltc2636-l8
diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig
index 93744011b63f..aee13ced6ddf 100644
--- a/drivers/iio/dac/Kconfig
+++ b/drivers/iio/dac/Kconfig
@@ -279,12 +279,12 @@ config LTC1660
  	  module will be called ltc1660.
  
  config LTC2632
-	tristate "Linear Technology LTC2632-12/10/8 and LTC2636-12/10/8 DAC spi driver"
+	tristate "Linear Technology LTC2632-12/10/8 and similar DAC spi driver"
  	depends on SPI
  	help
  	  Say yes here to build support for Linear Technology
-	  LTC2632-12, LTC2632-10, LTC2632-8, LTC2636-12, LTC2636-10 and
-	  LTC2636-8 converters (DAC).
+	  LTC2632, LTC2634 and LTC2636 DAC resolution 12/10/8 bit
+	  low 0-2.5V and high 0-4.096V range converters.
  
  	  To compile this driver as a module, choose M here: the
  	  module will be called ltc2632.
diff --git a/drivers/iio/dac/ltc2632.c b/drivers/iio/dac/ltc2632.c
index 2a84ea654645..e939d7f81014 100644
--- a/drivers/iio/dac/ltc2632.c
+++ b/drivers/iio/dac/ltc2632.c
@@ -54,6 +54,12 @@ enum ltc2632_supported_device_ids {
  	ID_LTC2632H12,
  	ID_LTC2632H10,
  	ID_LTC2632H8,
+	ID_LTC2634L12,
+	ID_LTC2634L10,
+	ID_LTC2634L8,
+	ID_LTC2634H12,
+	ID_LTC2634H10,
+	ID_LTC2634H8,
  	ID_LTC2636L12,
  	ID_LTC2636L10,
  	ID_LTC2636L8,
@@ -236,6 +242,36 @@ static const struct ltc2632_chip_info ltc2632_chip_info_tbl[] = {
  		.num_channels	= 2,
  		.vref_mv	= 4096,
  	},
+	[ID_LTC2634L12] = {
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 4,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2634L10] = {
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 4,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2634L8] =  {
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 4,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2634H12] = {
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 4,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2634H10] = {
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 4,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2634H8] =  {
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 4,
+		.vref_mv	= 4096,
+	},
  	[ID_LTC2636L12] = {
  		.channels	= ltc2632x12_channels,
  		.num_channels	= 8,
@@ -357,6 +393,12 @@ static const struct spi_device_id ltc2632_id[] = {
  	{ "ltc2632-h12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2632H12] },
  	{ "ltc2632-h10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2632H10] },
  	{ "ltc2632-h8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2632H8] },
+	{ "ltc2634-l12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634L12] },
+	{ "ltc2634-l10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634L10] },
+	{ "ltc2634-l8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634L8] },
+	{ "ltc2634-h12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634H12] },
+	{ "ltc2634-h10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634H10] },
+	{ "ltc2634-h8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634H8] },
  	{ "ltc2636-l12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636L12] },
  	{ "ltc2636-l10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636L10] },
  	{ "ltc2636-l8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636L8] },
@@ -386,6 +428,24 @@ static const struct of_device_id ltc2632_of_match[] = {
  	}, {
  		.compatible = "lltc,ltc2632-h8",
  		.data = &ltc2632_chip_info_tbl[ID_LTC2632H8]
+	}, {
+		.compatible = "lltc,ltc2634-l12",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634L12]
+	}, {
+		.compatible = "lltc,ltc2634-l10",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634L10]
+	}, {
+		.compatible = "lltc,ltc2634-l8",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634L8]
+	}, {
+		.compatible = "lltc,ltc2634-h12",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634H12]
+	}, {
+		.compatible = "lltc,ltc2634-h10",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634H10]
+	}, {
+		.compatible = "lltc,ltc2634-h8",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634H8]
  	}, {
  		.compatible = "lltc,ltc2636-l12",
  		.data = &ltc2632_chip_info_tbl[ID_LTC2636L12]

Looks good to me:

Acked-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>

Thanks
Uwe


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