diff mbox series

[V7,3/6] usb: typec: ucsi_ccg: Add OF support

Message ID 20230124114318.18345-4-jonathanh@nvidia.com (mailing list archive)
State Superseded
Headers show
Series Add device-tree support for Cypress CYPD4226 | expand

Commit Message

Jon Hunter Jan. 24, 2023, 11:43 a.m. UTC 
From: Wayne Chang <waynec@nvidia.com>

Add device-tree support for the Cypress CCG UCSI driver. The device-tree
binding for the Cypress CCG device uses the standard device-tree
'firmware-name' string property to indicate the firmware build that is
used.

The NVIDIA GPU I2C driver has been updated to use an ACPI string
property that is also named 'firmware-build' and given that this was the
only users of the 'ccgx,firmware-build' property, we can now remove
support for this legacy property.

Signed-off-by: Wayne Chang <waynec@nvidia.com>
Co-developed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
V6 -> V7: removed 'ccgx,firmware-build' property
V5 -> V6: fixed compilation
V4 -> V5: add support for 'firmware-name'
V1 -> V4: nothing has changed

 drivers/usb/typec/ucsi/ucsi_ccg.c | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

Comments

Heikki Krogerus Jan. 24, 2023, 11:50 a.m. UTC | #1 
Hi,

On Tue, Jan 24, 2023 at 11:43:15AM +0000, Jon Hunter wrote:
> From: Wayne Chang <waynec@nvidia.com>
> 
> Add device-tree support for the Cypress CCG UCSI driver. The device-tree
> binding for the Cypress CCG device uses the standard device-tree
> 'firmware-name' string property to indicate the firmware build that is
> used.
> 
> The NVIDIA GPU I2C driver has been updated to use an ACPI string
> property that is also named 'firmware-build' and given that this was the
> only users of the 'ccgx,firmware-build' property, we can now remove
> support for this legacy property.
> 
> Signed-off-by: Wayne Chang <waynec@nvidia.com>
> Co-developed-by: Jon Hunter <jonathanh@nvidia.com>
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>

You missed one nitpick in v6 - check below. But that's minor, so if
there's nothing else:

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>

> ---
> V6 -> V7: removed 'ccgx,firmware-build' property
> V5 -> V6: fixed compilation
> V4 -> V5: add support for 'firmware-name'
> V1 -> V4: nothing has changed
> 
>  drivers/usb/typec/ucsi/ucsi_ccg.c | 23 +++++++++++++++++++----
>  1 file changed, 19 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c
> index 46441f1477f2..8f5ad2094f26 100644
> --- a/drivers/usb/typec/ucsi/ucsi_ccg.c
> +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
> @@ -643,7 +643,7 @@ static int ccg_request_irq(struct ucsi_ccg *uc)
>  {
>  	unsigned long flags = IRQF_ONESHOT;
>  
> -	if (!has_acpi_companion(uc->dev))
> +	if (!dev_fwnode(uc->dev))
>  		flags |= IRQF_TRIGGER_HIGH;
>  
>  	return request_threaded_irq(uc->irq, NULL, ccg_irq_handler, flags, dev_name(uc->dev), uc);
> @@ -1342,6 +1342,7 @@ static int ucsi_ccg_probe(struct i2c_client *client)
>  {
>  	struct device *dev = &client->dev;
>  	struct ucsi_ccg *uc;
> +	const char *fw_name;
>  	int status;
>  
>  	uc = devm_kzalloc(dev, sizeof(*uc), GFP_KERNEL);
> @@ -1357,9 +1358,16 @@ static int ucsi_ccg_probe(struct i2c_client *client)
>  	INIT_WORK(&uc->pm_work, ccg_pm_workaround_work);
>  
>  	/* Only fail FW flashing when FW build information is not provided */
> -	status = device_property_read_u16(dev, "ccgx,firmware-build",
> -					  &uc->fw_build);
> -	if (status)
> +	status = device_property_read_string(dev, "firmware-name",
> +					     &fw_name);

One line is enough:

	status = device_property_read_string(dev, "firmware-name", &fw_name);

> +	if (!status) {
> +		if (!strcmp(fw_name, "nvidia,jetson-agx-xavier"))
> +			uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
> +		else if (!strcmp(fw_name, "nvidia,gpu"))
> +			uc->fw_build = CCG_FW_BUILD_NVIDIA;
> +	}
> +
> +	if (!uc->fw_build)
>  		dev_err(uc->dev, "failed to get FW build information\n");
>  
>  	/* reset ccg device and initialize ucsi */
> @@ -1426,6 +1434,12 @@ static void ucsi_ccg_remove(struct i2c_client *client)
>  	free_irq(uc->irq, uc);
>  }
>  
> +static const struct of_device_id ucsi_ccg_of_match_table[] = {
> +		{ .compatible = "cypress,cypd4226", },
> +		{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, ucsi_ccg_of_match_table);
> +
>  static const struct i2c_device_id ucsi_ccg_device_id[] = {
>  	{"ccgx-ucsi", 0},
>  	{}
> @@ -1480,6 +1494,7 @@ static struct i2c_driver ucsi_ccg_driver = {
>  		.pm = &ucsi_ccg_pm,
>  		.dev_groups = ucsi_ccg_groups,
>  		.acpi_match_table = amd_i2c_ucsi_match,
> +		.of_match_table = ucsi_ccg_of_match_table,
>  	},
>  	.probe_new = ucsi_ccg_probe,
>  	.remove = ucsi_ccg_remove,
> -- 
> 2.25.1

thanks,
Jon Hunter Jan. 24, 2023, 11:55 a.m. UTC | #2 
On 24/01/2023 11:50, Heikki Krogerus wrote:

...

> Hi,
> 
> On Tue, Jan 24, 2023 at 11:43:15AM +0000, Jon Hunter wrote:
>> From: Wayne Chang <waynec@nvidia.com>
>>
>> Add device-tree support for the Cypress CCG UCSI driver. The device-tree
>> binding for the Cypress CCG device uses the standard device-tree
>> 'firmware-name' string property to indicate the firmware build that is
>> used.
>>
>> The NVIDIA GPU I2C driver has been updated to use an ACPI string
>> property that is also named 'firmware-build' and given that this was the
>> only users of the 'ccgx,firmware-build' property, we can now remove
>> support for this legacy property.
>>
>> Signed-off-by: Wayne Chang <waynec@nvidia.com>
>> Co-developed-by: Jon Hunter <jonathanh@nvidia.com>
>> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> 
> You missed one nitpick in v6 - check below. But that's minor, so if
> there's nothing else:
> 
> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
> 
>> ---
>> V6 -> V7: removed 'ccgx,firmware-build' property
>> V5 -> V6: fixed compilation
>> V4 -> V5: add support for 'firmware-name'
>> V1 -> V4: nothing has changed
>>
>>   drivers/usb/typec/ucsi/ucsi_ccg.c | 23 +++++++++++++++++++----
>>   1 file changed, 19 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c
>> index 46441f1477f2..8f5ad2094f26 100644
>> --- a/drivers/usb/typec/ucsi/ucsi_ccg.c
>> +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
>> @@ -643,7 +643,7 @@ static int ccg_request_irq(struct ucsi_ccg *uc)
>>   {
>>   	unsigned long flags = IRQF_ONESHOT;
>>   
>> -	if (!has_acpi_companion(uc->dev))
>> +	if (!dev_fwnode(uc->dev))
>>   		flags |= IRQF_TRIGGER_HIGH;
>>   
>>   	return request_threaded_irq(uc->irq, NULL, ccg_irq_handler, flags, dev_name(uc->dev), uc);
>> @@ -1342,6 +1342,7 @@ static int ucsi_ccg_probe(struct i2c_client *client)
>>   {
>>   	struct device *dev = &client->dev;
>>   	struct ucsi_ccg *uc;
>> +	const char *fw_name;
>>   	int status;
>>   
>>   	uc = devm_kzalloc(dev, sizeof(*uc), GFP_KERNEL);
>> @@ -1357,9 +1358,16 @@ static int ucsi_ccg_probe(struct i2c_client *client)
>>   	INIT_WORK(&uc->pm_work, ccg_pm_workaround_work);
>>   
>>   	/* Only fail FW flashing when FW build information is not provided */
>> -	status = device_property_read_u16(dev, "ccgx,firmware-build",
>> -					  &uc->fw_build);
>> -	if (status)
>> +	status = device_property_read_string(dev, "firmware-name",
>> +					     &fw_name);
> 
> One line is enough:
> 
> 	status = device_property_read_string(dev, "firmware-name", &fw_name);

Ah sorry yes I forgot this!

Jon
diff mbox series

Patch

diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c
index 46441f1477f2..8f5ad2094f26 100644
--- a/drivers/usb/typec/ucsi/ucsi_ccg.c
+++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
@@ -643,7 +643,7 @@  static int ccg_request_irq(struct ucsi_ccg *uc)
 {
 	unsigned long flags = IRQF_ONESHOT;
 
-	if (!has_acpi_companion(uc->dev))
+	if (!dev_fwnode(uc->dev))
 		flags |= IRQF_TRIGGER_HIGH;
 
 	return request_threaded_irq(uc->irq, NULL, ccg_irq_handler, flags, dev_name(uc->dev), uc);
@@ -1342,6 +1342,7 @@  static int ucsi_ccg_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
 	struct ucsi_ccg *uc;
+	const char *fw_name;
 	int status;
 
 	uc = devm_kzalloc(dev, sizeof(*uc), GFP_KERNEL);
@@ -1357,9 +1358,16 @@  static int ucsi_ccg_probe(struct i2c_client *client)
 	INIT_WORK(&uc->pm_work, ccg_pm_workaround_work);
 
 	/* Only fail FW flashing when FW build information is not provided */
-	status = device_property_read_u16(dev, "ccgx,firmware-build",
-					  &uc->fw_build);
-	if (status)
+	status = device_property_read_string(dev, "firmware-name",
+					     &fw_name);
+	if (!status) {
+		if (!strcmp(fw_name, "nvidia,jetson-agx-xavier"))
+			uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
+		else if (!strcmp(fw_name, "nvidia,gpu"))
+			uc->fw_build = CCG_FW_BUILD_NVIDIA;
+	}
+
+	if (!uc->fw_build)
 		dev_err(uc->dev, "failed to get FW build information\n");
 
 	/* reset ccg device and initialize ucsi */
@@ -1426,6 +1434,12 @@  static void ucsi_ccg_remove(struct i2c_client *client)
 	free_irq(uc->irq, uc);
 }
 
+static const struct of_device_id ucsi_ccg_of_match_table[] = {
+		{ .compatible = "cypress,cypd4226", },
+		{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ucsi_ccg_of_match_table);
+
 static const struct i2c_device_id ucsi_ccg_device_id[] = {
 	{"ccgx-ucsi", 0},
 	{}
@@ -1480,6 +1494,7 @@  static struct i2c_driver ucsi_ccg_driver = {
 		.pm = &ucsi_ccg_pm,
 		.dev_groups = ucsi_ccg_groups,
 		.acpi_match_table = amd_i2c_ucsi_match,
+		.of_match_table = ucsi_ccg_of_match_table,
 	},
 	.probe_new = ucsi_ccg_probe,
 	.remove = ucsi_ccg_remove,