NXP PCA9570 is a 4-bit I2C GPO expander without interrupt functionality.
Its ports are controlled only by a data byte without register address.
Datasheet: https://www.nxp.com/docs/en/data-sheet/PCA9570.pdf
Signed-off-by: Sungbo Eo
---
v6:
* removed client
* re-added mutex
* removed template_chip
Thanks, it made me think about it deeper...
On 20. 7. 8. 오전 12:07, Andy Shevchenko wrote:
On Tue, Jul 7, 2020 at 5:03 PM Sungbo Eo wrote:
On 20. 7. 6. 오후 9:00, Andy Shevchenko wrote:
...
But I don't really understand what mutex does here. The driver does not
need consecutive command
On 20. 7. 6. 오후 9:00, Andy Shevchenko wrote:
On Mon, Jul 6, 2020 at 2:21 PM Bartosz Golaszewski
wrote:>
On Sun, Jul 5, 2020 at 3:31 PM Sungbo Eo wrote:
NXP PCA9570 is a 4-bit I2C GPO expander without interrupt functionality.
Its ports are controlled only by a data byte without regis
NXP PCA9570 is a 4-bit I2C GPO expander without interrupt functionality.
Its ports are controlled only by a data byte without register address.
Datasheet: https://www.nxp.com/docs/en/data-sheet/PCA9570.pdf
Signed-off-by: Sungbo Eo
---
v5:
* amended the commit message
* removed unnecessary
On 2020-07-02 21:36, Andy Shevchenko wrote:
+ gpio->chip.ngpio = i2c_match_id(pca9570_id_table, client)->driver_data;
Oh, avoid direct access to the table like this. And you may simply use
device_get_match_data().
I'm not sure if it really does the same thing, but I'll try following
yo
NXP PCA9570 is 4-bit I2C GPO expander without interrupt functionality.
Its ports are controlled only by a data byte without register address.
As there is no other driver similar enough to be adapted for it, a new
driver is introduced here.
Signed-off-by: Sungbo Eo
---
v4:
* removed
On 2020-07-01 06:30, Andy Shevchenko wrote:
On Tue, Jun 30, 2020 at 7:08 PM Sungbo Eo wrote:
NXP PCA9570 is 4-bit I2C GPO expander without interrupt functionality.
Its ports are controlled only by a data byte without register address.
As there is no other driver similar enough to be adapted
evchenko wrote:
On Tue, Jun 30, 2020 at 12:28 PM Bartosz Golaszewski
wrote:
On Thu, Jun 25, 2020 at 9:58 AM Sungbo Eo wrote:
+static const struct of_device_id pca9570_of_match_table[] = {
+ { .compatible = "nxp,pca9570" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TAB
This patch adds device tree bindings for the NXP PCA9570,
a 4-bit I2C GPO expander.
Signed-off-by: Sungbo Eo
---
v3:
* fixed dt_binding_check error
v2:
I don't feel I can really maintain this driver, but it seems all yaml docs
have a maintainers field so I just added it...
---
.../bin
NXP PCA9570 is 4-bit I2C GPO expander without interrupt functionality.
Its ports are controlled only by a data byte without register address.
As there is no other driver similar enough to be adapted for it, a new
driver is introduced here.
Signed-off-by: Sungbo Eo
---
v3:
* remove mutex
On 2020-06-30 07:01, Rob Herring wrote:
On Thu, 25 Jun 2020 16:59:57 +0900, Sungbo Eo wrote:
This patch adds device tree bindings for the NXP PCA9570,
a 4-bit I2C GPO expander.
Signed-off-by: Sungbo Eo
---
I don't feel I can really maintain this driver, but it seems all yaml docs
h
This patch adds device tree bindings for the NXP PCA9570,
a 4-bit I2C GPO expander.
Signed-off-by: Sungbo Eo
---
I don't feel I can really maintain this driver, but it seems all yaml docs
have a maintainers field so I just added it...
---
.../bindings/gpio/gpio-pca9570.yaml
NXP PCA9570 is 4-bit I2C GPO expander without interrupt functionality.
Its ports are controlled only by a data byte without register address.
As there is no other driver similar enough to be adapted for it, a new
driver is introduced here.
Signed-off-by: Sungbo Eo
---
v2:
* move the direction
On 2020-06-24 22:01, Andy Shevchenko wrote:
On Tue, Jun 23, 2020 at 9:06 AM Sungbo Eo wrote:
This patch adds support for the PCA9570 I2C GPO expander.
Tested in kernel 5.4 on an ipq40xx platform.
This is my first time submitting a whole driver patch, and I'm not really
familiar with
Hi Michael,
On 2020-06-23 17:31, Michael Walle wrote:
Hi Sungbo,
Am 2020-06-23 08:05, schrieb Sungbo Eo:
This patch adds support for the PCA9570 I2C GPO expander.
Signed-off-by: Sungbo Eo
---
Tested in kernel 5.4 on an ipq40xx platform.
This is my first time submitting a whole driver patch
This patch adds support for the PCA9570 I2C GPO expander.
Signed-off-by: Sungbo Eo
---
Tested in kernel 5.4 on an ipq40xx platform.
This is my first time submitting a whole driver patch, and I'm not really
familiar with this PCA expander series.
Please let me know how I can improve this
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