linux-kernel - Re: [PATCH 05/11] Input: synaptics-rmi4 - call rmi_driver_process_config_requests in enable

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Message-ID: <559579D3.8090607@synaptics.com>
Date:	Thu, 2 Jul 2015 10:50:11 -0700
From:	Andrew Duggan <aduggan@...aptics.com>
To:	Benjamin Tissoires <benjamin.tissoires@...hat.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Christopher Heiny <cheiny@...aptics.com>,
	Allie Xiong <axiong@...aptics.com>
CC:	Stephen Chandler Paul <cpaul@...hat.com>,
	<benjamin.tissoires@...il.com>, <linux-input@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	Vincent Huang <vincent.huang@...synaptics.com>
Subject: Re: [PATCH 05/11] Input: synaptics-rmi4 - call rmi_driver_process_config_requests
 in enable_sensor

On 06/23/2015 12:17 PM, Benjamin Tissoires wrote:
> The SMBus devices have their IRQs disabled after a reset. We need to
> configure them by calling rmi_driver_process_config_request() when
> enabling the sensor.
>
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> ---

Reviewed-by: Andrew Duggan <aduggan@...aptics.com>

>   drivers/input/rmi4/rmi_driver.c | 78 ++++++++++++++++++++++-------------------
>   drivers/input/rmi4/rmi_f11.c    |  4 +++
>   2 files changed, 45 insertions(+), 37 deletions(-)
>
> diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
> index fe5f2f9..264bc62 100644
> --- a/drivers/input/rmi4/rmi_driver.c
> +++ b/drivers/input/rmi4/rmi_driver.c
> @@ -136,42 +136,6 @@ static void disable_sensor(struct rmi_device *rmi_dev)
>   	data->enabled = false;
>   }
>   
> -static int enable_sensor(struct rmi_device *rmi_dev)
> -{
> -	struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev);
> -	struct rmi_transport_dev *xport;
> -	int retval = 0;
> -
> -	if (data->enabled)
> -		return 0;
> -
> -	if (rmi_dev->xport->ops->enable_device) {
> -		retval = rmi_dev->xport->ops->enable_device(rmi_dev->xport);
> -		if (retval)
> -			return retval;
> -	}
> -
> -	xport = rmi_dev->xport;
> -	if (data->irq) {
> -		retval = request_threaded_irq(data->irq,
> -				xport->hard_irq ? xport->hard_irq : NULL,
> -				xport->irq_thread ?
> -					xport->irq_thread : rmi_irq_thread,
> -				data->irq_flags,
> -				dev_name(&rmi_dev->dev), xport);
> -		if (retval)
> -			return retval;
> -	} else if (data->polling) {
> -		retval = enable_polling(rmi_dev);
> -		if (retval < 0)
> -			return retval;
> -	}
> -
> -	data->enabled = true;
> -
> -	return rmi_process_interrupt_requests(rmi_dev);
> -}
> -
>   static void rmi_free_function_list(struct rmi_device *rmi_dev)
>   {
>   	struct rmi_function *fn, *tmp;
> @@ -318,6 +282,46 @@ int rmi_process_interrupt_requests(struct rmi_device *rmi_dev)
>   }
>   EXPORT_SYMBOL_GPL(rmi_process_interrupt_requests);
>   
> +static int enable_sensor(struct rmi_device *rmi_dev)
> +{
> +	struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev);
> +	struct rmi_transport_dev *xport;
> +	int retval = 0;
> +
> +	if (data->enabled)
> +		return 0;
> +
> +	if (rmi_dev->xport->ops->enable_device) {
> +		retval = rmi_dev->xport->ops->enable_device(rmi_dev->xport);
> +		if (retval)
> +			return retval;
> +	}
> +
> +	retval = rmi_driver_process_config_requests(rmi_dev);
> +	if (retval < 0)
> +		return retval;
> +
> +	xport = rmi_dev->xport;
> +	if (data->irq) {
> +		retval = request_threaded_irq(data->irq,
> +				xport->hard_irq ? xport->hard_irq : NULL,
> +				xport->irq_thread ?
> +					xport->irq_thread : rmi_irq_thread,
> +				data->irq_flags,
> +				dev_name(&rmi_dev->dev), xport);
> +		if (retval)
> +			return retval;
> +	} else if (data->polling) {
> +		retval = enable_polling(rmi_dev);
> +		if (retval < 0)
> +			return retval;
> +	}
> +
> +	data->enabled = true;
> +
> +	return rmi_process_interrupt_requests(rmi_dev);
> +}
> +
>   /**
>    * rmi_driver_set_input_params - set input device id and other data.
>    *
> @@ -960,7 +964,7 @@ static int rmi_driver_probe(struct device *dev)
>   
>   	if (data->f01_container->dev.driver) {
>   		/* Driver already bound, so enable ATTN now. */
> -		enable_sensor(rmi_dev);
> +		return enable_sensor(rmi_dev);
>   	}
>   
>   	return 0;
> diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c
> index 4bdf4a5..99d6181 100644
> --- a/drivers/input/rmi4/rmi_f11.c
> +++ b/drivers/input/rmi4/rmi_f11.c
> @@ -1440,9 +1440,13 @@ static int rmi_f11_config(struct rmi_function *fn)
>   
>   	if (!sensor->report_abs)
>   		drv->clear_irq_bits(fn->rmi_dev, f11->abs_mask);
> +	else
> +		drv->set_irq_bits(fn->rmi_dev, f11->abs_mask);
>   
>   	if (!sensor->report_rel)
>   		drv->clear_irq_bits(fn->rmi_dev, f11->rel_mask);
> +	else
> +		drv->set_irq_bits(fn->rmi_dev, f11->rel_mask);
>   
>   	rc = f11_write_control_regs(fn, &f11->sensor.sens_query,
>   			   &f11->dev_controls, fn->fd.query_base_addr);

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