diff mbox series

[v3,4/6] soc: ti: pruss: Add helper functions to set GPI mode, MII_RT_event and XFR

Message ID 20230306110934.2736465-5-danishanwar@ti.com (mailing list archive)
State New, archived
Headers show
Series Introduce PRU platform consumer API | expand

Commit Message

MD Danish Anwar March 6, 2023, 11:09 a.m. UTC 
From: Suman Anna <s-anna@ti.com>

The PRUSS CFG module is represented as a syscon node and is currently
managed by the PRUSS platform driver. Add easy accessor functions to set
GPI mode, MII_RT event enable/disable and XFR (XIN XOUT) enable/disable
to enable the PRUSS Ethernet usecase. These functions reuse the generic
pruss_cfg_update() API function.

Signed-off-by: Suman Anna <s-anna@ti.com>
Co-developed-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
Signed-off-by: Puranjay Mohan <p-mohan@ti.com>
---
 include/linux/remoteproc/pruss.h | 55 ++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

Comments

Roger Quadros March 8, 2023, 8:34 a.m. UTC | #1 
Hi Danish,

On 06/03/2023 13:09, MD Danish Anwar wrote:
> From: Suman Anna <s-anna@ti.com>
> 
> The PRUSS CFG module is represented as a syscon node and is currently
> managed by the PRUSS platform driver. Add easy accessor functions to set
> GPI mode, MII_RT event enable/disable and XFR (XIN XOUT) enable/disable
> to enable the PRUSS Ethernet usecase. These functions reuse the generic
> pruss_cfg_update() API function.
> 
> Signed-off-by: Suman Anna <s-anna@ti.com>
> Co-developed-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
> Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
> Signed-off-by: Puranjay Mohan <p-mohan@ti.com>
> ---
>  include/linux/remoteproc/pruss.h | 55 ++++++++++++++++++++++++++++++++
>  1 file changed, 55 insertions(+)
> 
> diff --git a/include/linux/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h
> index d41bec448f06..7952f250301a 100644
> --- a/include/linux/remoteproc/pruss.h
> +++ b/include/linux/remoteproc/pruss.h
> @@ -240,4 +240,59 @@ static inline bool is_pru_rproc(struct device *dev)
>  	return true;
>  }
>  
> +/**
> + * pruss_cfg_gpimode() - set the GPI mode of the PRU
> + * @pruss: the pruss instance handle
> + * @pru_id: id of the PRU core within the PRUSS
> + * @mode: GPI mode to set
> + *
> + * Sets the GPI mode for a given PRU by programming the
> + * corresponding PRUSS_CFG_GPCFGx register
> + *
> + * Return: 0 on success, or an error code otherwise
> + */
> +static inline int pruss_cfg_gpimode(struct pruss *pruss,
> +				    enum pruss_pru_id pru_id,
> +				    enum pruss_gpi_mode mode)
> +{
> +	if (pru_id < 0 || pru_id >= PRUSS_NUM_PRUS)
> +		return -EINVAL;
> +

Should we check for invalid gpi mode and error out if so?

> +	return pruss_cfg_update(pruss, PRUSS_CFG_GPCFG(pru_id),
> +				PRUSS_GPCFG_PRU_GPI_MODE_MASK,
> +				mode << PRUSS_GPCFG_PRU_GPI_MODE_SHIFT);
> +}
> +
> +/**
> + * pruss_cfg_miirt_enable() - Enable/disable MII RT Events
> + * @pruss: the pruss instance
> + * @enable: enable/disable
> + *
> + * Enable/disable the MII RT Events for the PRUSS.
> + *
> + * Return: 0 on success, or an error code otherwise
> + */
> +static inline int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable)
> +{
> +	u32 set = enable ? PRUSS_MII_RT_EVENT_EN : 0;
> +
> +	return pruss_cfg_update(pruss, PRUSS_CFG_MII_RT,
> +				PRUSS_MII_RT_EVENT_EN, set);
> +}
> +
> +/**
> + * pruss_cfg_xfr_enable() - Enable/disable XIN XOUT shift functionality
> + * @pruss: the pruss instance
> + * @enable: enable/disable
> + *
> + * Return: 0 on success, or an error code otherwise
> + */
> +static inline int pruss_cfg_xfr_enable(struct pruss *pruss, bool enable)
> +{
> +	u32 set = enable ? PRUSS_SPP_XFER_SHIFT_EN : 0;
> +
> +	return pruss_cfg_update(pruss, PRUSS_CFG_SPP,
> +				PRUSS_SPP_XFER_SHIFT_EN, set);
> +}
> +
>  #endif /* __LINUX_PRUSS_H */

cheers,
-roger
Anwar, Md Danish March 8, 2023, 9:23 a.m. UTC | #2 
Hi Roger,

On 08/03/23 14:04, Roger Quadros wrote:
> Hi Danish,
> 
> On 06/03/2023 13:09, MD Danish Anwar wrote:
>> From: Suman Anna <s-anna@ti.com>
>>
>> The PRUSS CFG module is represented as a syscon node and is currently
>> managed by the PRUSS platform driver. Add easy accessor functions to set
>> GPI mode, MII_RT event enable/disable and XFR (XIN XOUT) enable/disable
>> to enable the PRUSS Ethernet usecase. These functions reuse the generic
>> pruss_cfg_update() API function.
>>
>> Signed-off-by: Suman Anna <s-anna@ti.com>
>> Co-developed-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
>> Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
>> Signed-off-by: Puranjay Mohan <p-mohan@ti.com>
>> ---
>>  include/linux/remoteproc/pruss.h | 55 ++++++++++++++++++++++++++++++++
>>  1 file changed, 55 insertions(+)
>>
>> diff --git a/include/linux/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h
>> index d41bec448f06..7952f250301a 100644
>> --- a/include/linux/remoteproc/pruss.h
>> +++ b/include/linux/remoteproc/pruss.h
>> @@ -240,4 +240,59 @@ static inline bool is_pru_rproc(struct device *dev)
>>  	return true;
>>  }
>>  
>> +/**
>> + * pruss_cfg_gpimode() - set the GPI mode of the PRU
>> + * @pruss: the pruss instance handle
>> + * @pru_id: id of the PRU core within the PRUSS
>> + * @mode: GPI mode to set
>> + *
>> + * Sets the GPI mode for a given PRU by programming the
>> + * corresponding PRUSS_CFG_GPCFGx register
>> + *
>> + * Return: 0 on success, or an error code otherwise
>> + */
>> +static inline int pruss_cfg_gpimode(struct pruss *pruss,
>> +				    enum pruss_pru_id pru_id,
>> +				    enum pruss_gpi_mode mode)
>> +{
>> +	if (pru_id < 0 || pru_id >= PRUSS_NUM_PRUS)
>> +		return -EINVAL;
>> +
> 
> Should we check for invalid gpi mode and error out if so?
> 
Sure we can check for invalid gpi mode.

Does the below code snippet looks good to you?

	if(mode < PRUSS_GPI_MODE_DIRECT || mode > PRUSS_GPI_MODE_MII)
		return -EINVAL;

>> +	return pruss_cfg_update(pruss, PRUSS_CFG_GPCFG(pru_id),
>> +				PRUSS_GPCFG_PRU_GPI_MODE_MASK,
>> +				mode << PRUSS_GPCFG_PRU_GPI_MODE_SHIFT);
>> +}
>> +
>> +/**
>> + * pruss_cfg_miirt_enable() - Enable/disable MII RT Events
>> + * @pruss: the pruss instance
>> + * @enable: enable/disable
>> + *
>> + * Enable/disable the MII RT Events for the PRUSS.
>> + *
>> + * Return: 0 on success, or an error code otherwise
>> + */
>> +static inline int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable)
>> +{
>> +	u32 set = enable ? PRUSS_MII_RT_EVENT_EN : 0;
>> +
>> +	return pruss_cfg_update(pruss, PRUSS_CFG_MII_RT,
>> +				PRUSS_MII_RT_EVENT_EN, set);
>> +}
>> +
>> +/**
>> + * pruss_cfg_xfr_enable() - Enable/disable XIN XOUT shift functionality
>> + * @pruss: the pruss instance
>> + * @enable: enable/disable
>> + *
>> + * Return: 0 on success, or an error code otherwise
>> + */
>> +static inline int pruss_cfg_xfr_enable(struct pruss *pruss, bool enable)
>> +{
>> +	u32 set = enable ? PRUSS_SPP_XFER_SHIFT_EN : 0;
>> +
>> +	return pruss_cfg_update(pruss, PRUSS_CFG_SPP,
>> +				PRUSS_SPP_XFER_SHIFT_EN, set);
>> +}
>> +
>>  #endif /* __LINUX_PRUSS_H */
> 
> cheers,
> -roger
Roger Quadros March 8, 2023, 11:15 a.m. UTC | #3 
On 08/03/2023 11:23, Md Danish Anwar wrote:
> Hi Roger,
> 
> On 08/03/23 14:04, Roger Quadros wrote:
>> Hi Danish,
>>
>> On 06/03/2023 13:09, MD Danish Anwar wrote:
>>> From: Suman Anna <s-anna@ti.com>
>>>
>>> The PRUSS CFG module is represented as a syscon node and is currently
>>> managed by the PRUSS platform driver. Add easy accessor functions to set
>>> GPI mode, MII_RT event enable/disable and XFR (XIN XOUT) enable/disable
>>> to enable the PRUSS Ethernet usecase. These functions reuse the generic
>>> pruss_cfg_update() API function.
>>>
>>> Signed-off-by: Suman Anna <s-anna@ti.com>
>>> Co-developed-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
>>> Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
>>> Signed-off-by: Puranjay Mohan <p-mohan@ti.com>
>>> ---
>>>  include/linux/remoteproc/pruss.h | 55 ++++++++++++++++++++++++++++++++
>>>  1 file changed, 55 insertions(+)
>>>
>>> diff --git a/include/linux/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h
>>> index d41bec448f06..7952f250301a 100644
>>> --- a/include/linux/remoteproc/pruss.h
>>> +++ b/include/linux/remoteproc/pruss.h
>>> @@ -240,4 +240,59 @@ static inline bool is_pru_rproc(struct device *dev)
>>>  	return true;
>>>  }
>>>  
>>> +/**
>>> + * pruss_cfg_gpimode() - set the GPI mode of the PRU
>>> + * @pruss: the pruss instance handle
>>> + * @pru_id: id of the PRU core within the PRUSS
>>> + * @mode: GPI mode to set
>>> + *
>>> + * Sets the GPI mode for a given PRU by programming the
>>> + * corresponding PRUSS_CFG_GPCFGx register
>>> + *
>>> + * Return: 0 on success, or an error code otherwise
>>> + */
>>> +static inline int pruss_cfg_gpimode(struct pruss *pruss,
>>> +				    enum pruss_pru_id pru_id,
>>> +				    enum pruss_gpi_mode mode)
>>> +{
>>> +	if (pru_id < 0 || pru_id >= PRUSS_NUM_PRUS)
>>> +		return -EINVAL;
>>> +
>>
>> Should we check for invalid gpi mode and error out if so?
>>
> Sure we can check for invalid gpi mode.
> 
> Does the below code snippet looks good to you?
> 
> 	if(mode < PRUSS_GPI_MODE_DIRECT || mode > PRUSS_GPI_MODE_MII)

How about?
	if (mode < 0 || mode > PRUSS_GPI_MODE_MAX)

> 		return -EINVAL;
> 
>>> +	return pruss_cfg_update(pruss, PRUSS_CFG_GPCFG(pru_id),
>>> +				PRUSS_GPCFG_PRU_GPI_MODE_MASK,
>>> +				mode << PRUSS_GPCFG_PRU_GPI_MODE_SHIFT);
>>> +}
>>> +
>>> +/**
>>> + * pruss_cfg_miirt_enable() - Enable/disable MII RT Events
>>> + * @pruss: the pruss instance
>>> + * @enable: enable/disable
>>> + *
>>> + * Enable/disable the MII RT Events for the PRUSS.
>>> + *
>>> + * Return: 0 on success, or an error code otherwise
>>> + */
>>> +static inline int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable)
>>> +{
>>> +	u32 set = enable ? PRUSS_MII_RT_EVENT_EN : 0;
>>> +
>>> +	return pruss_cfg_update(pruss, PRUSS_CFG_MII_RT,
>>> +				PRUSS_MII_RT_EVENT_EN, set);
>>> +}
>>> +
>>> +/**
>>> + * pruss_cfg_xfr_enable() - Enable/disable XIN XOUT shift functionality
>>> + * @pruss: the pruss instance
>>> + * @enable: enable/disable
>>> + *
>>> + * Return: 0 on success, or an error code otherwise
>>> + */
>>> +static inline int pruss_cfg_xfr_enable(struct pruss *pruss, bool enable)
>>> +{
>>> +	u32 set = enable ? PRUSS_SPP_XFER_SHIFT_EN : 0;
>>> +
>>> +	return pruss_cfg_update(pruss, PRUSS_CFG_SPP,
>>> +				PRUSS_SPP_XFER_SHIFT_EN, set);
>>> +}
>>> +
>>>  #endif /* __LINUX_PRUSS_H */
>>

cheers,
-roger
Anwar, Md Danish March 8, 2023, 11:29 a.m. UTC | #4 
On 08/03/23 16:45, Roger Quadros wrote:
> 
> 
> On 08/03/2023 11:23, Md Danish Anwar wrote:
>> Hi Roger,
>>
>> On 08/03/23 14:04, Roger Quadros wrote:
>>> Hi Danish,
>>>
>>> On 06/03/2023 13:09, MD Danish Anwar wrote:
>>>> From: Suman Anna <s-anna@ti.com>
>>>>
>>>> The PRUSS CFG module is represented as a syscon node and is currently
>>>> managed by the PRUSS platform driver. Add easy accessor functions to set
>>>> GPI mode, MII_RT event enable/disable and XFR (XIN XOUT) enable/disable
>>>> to enable the PRUSS Ethernet usecase. These functions reuse the generic
>>>> pruss_cfg_update() API function.
>>>>
>>>> Signed-off-by: Suman Anna <s-anna@ti.com>
>>>> Co-developed-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
>>>> Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
>>>> Signed-off-by: Puranjay Mohan <p-mohan@ti.com>
>>>> ---
>>>>  include/linux/remoteproc/pruss.h | 55 ++++++++++++++++++++++++++++++++
>>>>  1 file changed, 55 insertions(+)
>>>>
>>>> diff --git a/include/linux/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h
>>>> index d41bec448f06..7952f250301a 100644
>>>> --- a/include/linux/remoteproc/pruss.h
>>>> +++ b/include/linux/remoteproc/pruss.h
>>>> @@ -240,4 +240,59 @@ static inline bool is_pru_rproc(struct device *dev)
>>>>  	return true;
>>>>  }
>>>>  
>>>> +/**
>>>> + * pruss_cfg_gpimode() - set the GPI mode of the PRU
>>>> + * @pruss: the pruss instance handle
>>>> + * @pru_id: id of the PRU core within the PRUSS
>>>> + * @mode: GPI mode to set
>>>> + *
>>>> + * Sets the GPI mode for a given PRU by programming the
>>>> + * corresponding PRUSS_CFG_GPCFGx register
>>>> + *
>>>> + * Return: 0 on success, or an error code otherwise
>>>> + */
>>>> +static inline int pruss_cfg_gpimode(struct pruss *pruss,
>>>> +				    enum pruss_pru_id pru_id,
>>>> +				    enum pruss_gpi_mode mode)
>>>> +{
>>>> +	if (pru_id < 0 || pru_id >= PRUSS_NUM_PRUS)
>>>> +		return -EINVAL;
>>>> +
>>>
>>> Should we check for invalid gpi mode and error out if so?
>>>
>> Sure we can check for invalid gpi mode.
>>
>> Does the below code snippet looks good to you?
>>
>> 	if(mode < PRUSS_GPI_MODE_DIRECT || mode > PRUSS_GPI_MODE_MII)
> 
> How about?
> 	if (mode < 0 || mode > PRUSS_GPI_MODE_MAX)
> 

Sure that would be better. But we will have to introduce PRUSS_GPI_MODE_MAX in
the enum definition.

Also the if() should check for mode >= PRUSS_GPI_MODE_MAX so the if check will
become,

	if (mode < 0 || mode >= PRUSS_GPI_MODE_MAX)
		return -EINVAL;

enum definition,

enum pruss_gpi_mode {
	PRUSS_GPI_MODE_DIRECT = 0,
	PRUSS_GPI_MODE_PARALLEL,
	PRUSS_GPI_MODE_28BIT_SHIFT,
	PRUSS_GPI_MODE_MII,
	PRUSS_GPI_MODE_MAX,
};

>> 		return -EINVAL;
>>
>>>> +	return pruss_cfg_update(pruss, PRUSS_CFG_GPCFG(pru_id),
>>>> +				PRUSS_GPCFG_PRU_GPI_MODE_MASK,
>>>> +				mode << PRUSS_GPCFG_PRU_GPI_MODE_SHIFT);
>>>> +}
>>>> +
>>>> +/**
>>>> + * pruss_cfg_miirt_enable() - Enable/disable MII RT Events
>>>> + * @pruss: the pruss instance
>>>> + * @enable: enable/disable
>>>> + *
>>>> + * Enable/disable the MII RT Events for the PRUSS.
>>>> + *
>>>> + * Return: 0 on success, or an error code otherwise
>>>> + */
>>>> +static inline int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable)
>>>> +{
>>>> +	u32 set = enable ? PRUSS_MII_RT_EVENT_EN : 0;
>>>> +
>>>> +	return pruss_cfg_update(pruss, PRUSS_CFG_MII_RT,
>>>> +				PRUSS_MII_RT_EVENT_EN, set);
>>>> +}
>>>> +
>>>> +/**
>>>> + * pruss_cfg_xfr_enable() - Enable/disable XIN XOUT shift functionality
>>>> + * @pruss: the pruss instance
>>>> + * @enable: enable/disable
>>>> + *
>>>> + * Return: 0 on success, or an error code otherwise
>>>> + */
>>>> +static inline int pruss_cfg_xfr_enable(struct pruss *pruss, bool enable)
>>>> +{
>>>> +	u32 set = enable ? PRUSS_SPP_XFER_SHIFT_EN : 0;
>>>> +
>>>> +	return pruss_cfg_update(pruss, PRUSS_CFG_SPP,
>>>> +				PRUSS_SPP_XFER_SHIFT_EN, set);
>>>> +}
>>>> +
>>>>  #endif /* __LINUX_PRUSS_H */
>>>
> 
> cheers,
> -roger
Roger Quadros March 8, 2023, 11:39 a.m. UTC | #5 
On 08/03/2023 13:29, Md Danish Anwar wrote:
> 
> 
> On 08/03/23 16:45, Roger Quadros wrote:
>>
>>
>> On 08/03/2023 11:23, Md Danish Anwar wrote:
>>> Hi Roger,
>>>
>>> On 08/03/23 14:04, Roger Quadros wrote:
>>>> Hi Danish,
>>>>
>>>> On 06/03/2023 13:09, MD Danish Anwar wrote:
>>>>> From: Suman Anna <s-anna@ti.com>
>>>>>
>>>>> The PRUSS CFG module is represented as a syscon node and is currently
>>>>> managed by the PRUSS platform driver. Add easy accessor functions to set
>>>>> GPI mode, MII_RT event enable/disable and XFR (XIN XOUT) enable/disable
>>>>> to enable the PRUSS Ethernet usecase. These functions reuse the generic
>>>>> pruss_cfg_update() API function.
>>>>>
>>>>> Signed-off-by: Suman Anna <s-anna@ti.com>
>>>>> Co-developed-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
>>>>> Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
>>>>> Signed-off-by: Puranjay Mohan <p-mohan@ti.com>
>>>>> ---
>>>>>  include/linux/remoteproc/pruss.h | 55 ++++++++++++++++++++++++++++++++
>>>>>  1 file changed, 55 insertions(+)
>>>>>
>>>>> diff --git a/include/linux/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h
>>>>> index d41bec448f06..7952f250301a 100644
>>>>> --- a/include/linux/remoteproc/pruss.h
>>>>> +++ b/include/linux/remoteproc/pruss.h
>>>>> @@ -240,4 +240,59 @@ static inline bool is_pru_rproc(struct device *dev)
>>>>>  	return true;
>>>>>  }
>>>>>  
>>>>> +/**
>>>>> + * pruss_cfg_gpimode() - set the GPI mode of the PRU
>>>>> + * @pruss: the pruss instance handle
>>>>> + * @pru_id: id of the PRU core within the PRUSS
>>>>> + * @mode: GPI mode to set
>>>>> + *
>>>>> + * Sets the GPI mode for a given PRU by programming the
>>>>> + * corresponding PRUSS_CFG_GPCFGx register
>>>>> + *
>>>>> + * Return: 0 on success, or an error code otherwise
>>>>> + */
>>>>> +static inline int pruss_cfg_gpimode(struct pruss *pruss,
>>>>> +				    enum pruss_pru_id pru_id,
>>>>> +				    enum pruss_gpi_mode mode)
>>>>> +{
>>>>> +	if (pru_id < 0 || pru_id >= PRUSS_NUM_PRUS)
>>>>> +		return -EINVAL;
>>>>> +
>>>>
>>>> Should we check for invalid gpi mode and error out if so?
>>>>
>>> Sure we can check for invalid gpi mode.
>>>
>>> Does the below code snippet looks good to you?
>>>
>>> 	if(mode < PRUSS_GPI_MODE_DIRECT || mode > PRUSS_GPI_MODE_MII)
>>
>> How about?
>> 	if (mode < 0 || mode > PRUSS_GPI_MODE_MAX)
>>
> 
> Sure that would be better. But we will have to introduce PRUSS_GPI_MODE_MAX in
> the enum definition.
> 
> Also the if() should check for mode >= PRUSS_GPI_MODE_MAX so the if check will
> become,
> 
> 	if (mode < 0 || mode >= PRUSS_GPI_MODE_MAX)
> 		return -EINVAL;
> 
> enum definition,
> 
> enum pruss_gpi_mode {
> 	PRUSS_GPI_MODE_DIRECT = 0,
> 	PRUSS_GPI_MODE_PARALLEL,
> 	PRUSS_GPI_MODE_28BIT_SHIFT,
> 	PRUSS_GPI_MODE_MII,
> 	PRUSS_GPI_MODE_MAX,
> };
> 

Yes. Looks good.

>>> 		return -EINVAL;
>>>
>>>>> +	return pruss_cfg_update(pruss, PRUSS_CFG_GPCFG(pru_id),
>>>>> +				PRUSS_GPCFG_PRU_GPI_MODE_MASK,
>>>>> +				mode << PRUSS_GPCFG_PRU_GPI_MODE_SHIFT);
>>>>> +}
>>>>> +
>>>>> +/**
>>>>> + * pruss_cfg_miirt_enable() - Enable/disable MII RT Events
>>>>> + * @pruss: the pruss instance
>>>>> + * @enable: enable/disable
>>>>> + *
>>>>> + * Enable/disable the MII RT Events for the PRUSS.
>>>>> + *
>>>>> + * Return: 0 on success, or an error code otherwise
>>>>> + */
>>>>> +static inline int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable)
>>>>> +{
>>>>> +	u32 set = enable ? PRUSS_MII_RT_EVENT_EN : 0;
>>>>> +
>>>>> +	return pruss_cfg_update(pruss, PRUSS_CFG_MII_RT,
>>>>> +				PRUSS_MII_RT_EVENT_EN, set);
>>>>> +}
>>>>> +
>>>>> +/**
>>>>> + * pruss_cfg_xfr_enable() - Enable/disable XIN XOUT shift functionality
>>>>> + * @pruss: the pruss instance
>>>>> + * @enable: enable/disable
>>>>> + *
>>>>> + * Return: 0 on success, or an error code otherwise
>>>>> + */
>>>>> +static inline int pruss_cfg_xfr_enable(struct pruss *pruss, bool enable)
>>>>> +{
>>>>> +	u32 set = enable ? PRUSS_SPP_XFER_SHIFT_EN : 0;
>>>>> +
>>>>> +	return pruss_cfg_update(pruss, PRUSS_CFG_SPP,
>>>>> +				PRUSS_SPP_XFER_SHIFT_EN, set);
>>>>> +}
>>>>> +
>>>>>  #endif /* __LINUX_PRUSS_H */
>>>>
>>
>> cheers,
>> -roger
>
diff mbox series

Patch

diff --git a/include/linux/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h
index d41bec448f06..7952f250301a 100644
--- a/include/linux/remoteproc/pruss.h
+++ b/include/linux/remoteproc/pruss.h
@@ -240,4 +240,59 @@  static inline bool is_pru_rproc(struct device *dev)
 	return true;
 }
 
+/**
+ * pruss_cfg_gpimode() - set the GPI mode of the PRU
+ * @pruss: the pruss instance handle
+ * @pru_id: id of the PRU core within the PRUSS
+ * @mode: GPI mode to set
+ *
+ * Sets the GPI mode for a given PRU by programming the
+ * corresponding PRUSS_CFG_GPCFGx register
+ *
+ * Return: 0 on success, or an error code otherwise
+ */
+static inline int pruss_cfg_gpimode(struct pruss *pruss,
+				    enum pruss_pru_id pru_id,
+				    enum pruss_gpi_mode mode)
+{
+	if (pru_id < 0 || pru_id >= PRUSS_NUM_PRUS)
+		return -EINVAL;
+
+	return pruss_cfg_update(pruss, PRUSS_CFG_GPCFG(pru_id),
+				PRUSS_GPCFG_PRU_GPI_MODE_MASK,
+				mode << PRUSS_GPCFG_PRU_GPI_MODE_SHIFT);
+}
+
+/**
+ * pruss_cfg_miirt_enable() - Enable/disable MII RT Events
+ * @pruss: the pruss instance
+ * @enable: enable/disable
+ *
+ * Enable/disable the MII RT Events for the PRUSS.
+ *
+ * Return: 0 on success, or an error code otherwise
+ */
+static inline int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable)
+{
+	u32 set = enable ? PRUSS_MII_RT_EVENT_EN : 0;
+
+	return pruss_cfg_update(pruss, PRUSS_CFG_MII_RT,
+				PRUSS_MII_RT_EVENT_EN, set);
+}
+
+/**
+ * pruss_cfg_xfr_enable() - Enable/disable XIN XOUT shift functionality
+ * @pruss: the pruss instance
+ * @enable: enable/disable
+ *
+ * Return: 0 on success, or an error code otherwise
+ */
+static inline int pruss_cfg_xfr_enable(struct pruss *pruss, bool enable)
+{
+	u32 set = enable ? PRUSS_SPP_XFER_SHIFT_EN : 0;
+
+	return pruss_cfg_update(pruss, PRUSS_CFG_SPP,
+				PRUSS_SPP_XFER_SHIFT_EN, set);
+}
+
 #endif /* __LINUX_PRUSS_H */