[PATCH v2 0/2] leds: pca955x: Add IBM software implemenation of the PCA9552 chip

[PATCH v2 0/2] leds: pca955x: Add IBM software implemenation of the PCA9552 chip

[Eddie James]

IBM created an implementation of the PCA9552 on a PIC16F
microcontroller. The I2C device addresses are different from the
hardware PCA9552, so add a new compatible string and associated
platform data to be able to probe this device, and document the new
string.

Changes since v1:
 - Switch the vendor part of the compatible string to ibm
 - Change the enum in the driver to be ibm_<part no>

Eddie James (2):
  dt-bindings: leds: pca955x: Add IBM implementation compatible string
  leds: pca955x: Add an IBM software implementation of the PCA9552 chip

 Documentation/devicetree/bindings/leds/leds-pca955x.txt | 1 +
 drivers/leds/leds-pca955x.c                             | 8 ++++++++
 2 files changed, 9 insertions(+)

-- 
2.24.0

[PATCH v2 1/2] dt-bindings: leds: pca955x: Add IBM implementation compatible string

[Eddie James]

IBM created an implementation of the PCA9552 on a PIC16F
microcontroller. Document the new compatible string for this device.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
 Documentation/devicetree/bindings/leds/leds-pca955x.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/leds/leds-pca955x.txt b/Documentation/devicetree/bindings/leds/leds-pca955x.txt
index 7a5830f8d5ab..817f460f3a72 100644
--- a/Documentation/devicetree/bindings/leds/leds-pca955x.txt
+++ b/Documentation/devicetree/bindings/leds/leds-pca955x.txt
@@ -9,6 +9,7 @@ Required properties:
 	"nxp,pca9550"
 	"nxp,pca9551"
 	"nxp,pca9552"
+	"ibm,pca9552"
 	"nxp,pca9553"
 - #address-cells: must be 1
 - #size-cells: must be 0
-- 
2.24.0

[PATCH v2 2/2] leds: pca955x: Add an IBM software implementation of the PCA9552 chip

[Eddie James]

IBM created an implementation of the PCA9552 on a PIC16F
microcontroller. The I2C device addresses are different from the
hardware PCA9552, so add a new compatible string and associated
platform data to be able to probe this device.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
---
 drivers/leds/leds-pca955x.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
index 131f8e922ade..7087ca4592fc 100644
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -65,6 +65,7 @@ enum pca955x_type {
 	pca9550,
 	pca9551,
 	pca9552,
+	ibm_pca9552,
 	pca9553,
 };
 
@@ -90,6 +91,11 @@ static struct pca955x_chipdef pca955x_chipdefs[] = {
 		.slv_addr	= /* 1100xxx */ 0x60,
 		.slv_addr_shift	= 3,
 	},
+	[ibm_pca9552] = {
+		.bits		= 16,
+		.slv_addr	= /* 0110xxx */ 0x30,
+		.slv_addr_shift	= 3,
+	},
 	[pca9553] = {
 		.bits		= 4,
 		.slv_addr	= /* 110001x */ 0x62,
@@ -101,6 +107,7 @@ static const struct i2c_device_id pca955x_id[] = {
 	{ "pca9550", pca9550 },
 	{ "pca9551", pca9551 },
 	{ "pca9552", pca9552 },
+	{ "ibm-pca9552", ibm_pca9552 },
 	{ "pca9553", pca9553 },
 	{ }
 };
@@ -412,6 +419,7 @@ static const struct of_device_id of_pca955x_match[] = {
 	{ .compatible = "nxp,pca9550", .data = (void *)pca9550 },
 	{ .compatible = "nxp,pca9551", .data = (void *)pca9551 },
 	{ .compatible = "nxp,pca9552", .data = (void *)pca9552 },
+	{ .compatible = "ibm,pca9552", .data = (void *)ibm_pca9552 },
 	{ .compatible = "nxp,pca9553", .data = (void *)pca9553 },
 	{},
 };
-- 
2.24.0

Re: [PATCH v2 2/2] leds: pca955x: Add an IBM software implementation of the PCA9552 chip

[Andy Shevchenko]

On Mon, Aug 3, 2020 at 5:51 PM Eddie James <eajames@linux.ibm.com> wrote:
>
> IBM created an implementation of the PCA9552 on a PIC16F
> microcontroller. The I2C device addresses are different from the
> hardware PCA9552, so add a new compatible string and associated
> platform data to be able to probe this device.

...

>         pca9550,
>         pca9551,
>         pca9552,
> +       ibm_pca9552,
>         pca9553,

I would rather not mix like this, but use alpha order, for example.
It's better to read and see which devices are supported by vendor.

...

>         },

> +       [ibm_pca9552] = {

> +       },
>         [pca9553] = {

Ditto.

...

>         { "pca9550", pca9550 },
>         { "pca9551", pca9551 },
>         { "pca9552", pca9552 },
> +       { "ibm-pca9552", ibm_pca9552 },
>         { "pca9553", pca9553 },

Ditto.

...

>         { .compatible = "nxp,pca9550", .data = (void *)pca9550 },
>         { .compatible = "nxp,pca9551", .data = (void *)pca9551 },
>         { .compatible = "nxp,pca9552", .data = (void *)pca9552 },
> +       { .compatible = "ibm,pca9552", .data = (void *)ibm_pca9552 },
>         { .compatible = "nxp,pca9553", .data = (void *)pca9553 },

Ditto.

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH v2 2/2] leds: pca955x: Add an IBM software implementation of the PCA9552 chip

[Pavel Machek]

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On Mon 2020-08-03 19:42:17, Andy Shevchenko wrote:
> On Mon, Aug 3, 2020 at 5:51 PM Eddie James <eajames@linux.ibm.com> wrote:
> >
> > IBM created an implementation of the PCA9552 on a PIC16F
> > microcontroller. The I2C device addresses are different from the
> > hardware PCA9552, so add a new compatible string and associated
> > platform data to be able to probe this device.
> 
> ...
> 
> >         pca9550,
> >         pca9551,
> >         pca9552,
> > +       ibm_pca9552,
> >         pca9553,
> 
> I would rather not mix like this, but use alpha order, for example.
> It's better to read and see which devices are supported by vendor.

Actually I see no huge reason to change that. pca9552 and ibm_pca9552
should be very similar, so it makes sense to keep them close together.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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Re: [PATCH v2 2/2] leds: pca955x: Add an IBM software implementation of the PCA9552 chip

[Pavel Machek]

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On Mon 2020-08-03 09:50:55, Eddie James wrote:
> IBM created an implementation of the PCA9552 on a PIC16F
> microcontroller. The I2C device addresses are different from the
> hardware PCA9552, so add a new compatible string and associated
> platform data to be able to probe this device.
> 
> Signed-off-by: Eddie James <eajames@linux.ibm.com>
> Reviewed-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>

Acked-by: Pavel Machek <pavel@ucw.cz>

This can be applied when Rob ack's the device tree change.

I'll ask you to do new patch version when that happens.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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Re: [PATCH v2 1/2] dt-bindings: leds: pca955x: Add IBM implementation compatible string

[Rob Herring]

On Mon, 03 Aug 2020 09:50:54 -0500, Eddie James wrote:
> IBM created an implementation of the PCA9552 on a PIC16F
> microcontroller. Document the new compatible string for this device.
> 
> Signed-off-by: Eddie James <eajames@linux.ibm.com>
> ---
>  Documentation/devicetree/bindings/leds/leds-pca955x.txt | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH v2 1/2] dt-bindings: leds: pca955x: Add IBM implementation compatible string

[Pavel Machek]

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On Wed 2020-08-12 13:57:47, Rob Herring wrote:
> On Mon, 03 Aug 2020 09:50:54 -0500, Eddie James wrote:
> > IBM created an implementation of the PCA9552 on a PIC16F
> > microcontroller. Document the new compatible string for this device.
> > 
> > Signed-off-by: Eddie James <eajames@linux.ibm.com>
> > ---
> >  Documentation/devicetree/bindings/leds/leds-pca955x.txt | 1 +
> >  1 file changed, 1 insertion(+)
> 
> Acked-by: Rob Herring <robh@kernel.org>

Thanks, I applied the series.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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