Re: [PATCH V2 2/3] input: pmic8xxx-keypad: Add row and column gpio configuration

[Anirudh Ghayal <aghayal@codeaurora.org>]

Please ignore this patch set series (from y@vger.kernel.org), a mistake 
from my side.

Thank you,
~Anirudh

On 5/5/2011 10:59 AM, y@vger.kernel.org wrote:
> From: Anirudh Ghayal<aghayal@codeaurora.org>
>
> Cc: Dmitry Torokhov<dmitry.torokhov@gmail.com>
> Signed-off-by: Anirudh Ghayal<aghayal@codeaurora.org>
> ---
>   drivers/input/keyboard/pmic8xxx-keypad.c |   74 ++++++++++++++++++++++++++++++
>   include/linux/input/pmic8xxx-keypad.h    |    2 +
>   2 files changed, 76 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/input/keyboard/pmic8xxx-keypad.c b/drivers/input/keyboard/pmic8xxx-keypad.c
> index 0229325..cad09d7 100644
> --- a/drivers/input/keyboard/pmic8xxx-keypad.c
> +++ b/drivers/input/keyboard/pmic8xxx-keypad.c
> @@ -21,6 +21,7 @@
>   #include<linux/mutex.h>
>
>   #include<linux/mfd/pm8xxx/core.h>
> +#include<linux/mfd/pm8xxx/gpio.h>
>   #include<linux/input/pmic8xxx-keypad.h>
>
>   #define PM8XXX_MAX_ROWS		18
> @@ -446,6 +447,64 @@ static int __devinit pmic8xxx_kpd_init(struct pmic8xxx_kp *kp)
>
>   }
>
> +static int __devinit pmic8xxx_kp_config_drv(int gpio_start, int num_gpios)
> +{
> +	int	rc;
> +	struct pm_gpio kypd_drv = {
> +		.direction	= PM_GPIO_DIR_OUT,
> +		.output_buffer	= PM_GPIO_OUT_BUF_OPEN_DRAIN,
> +		.output_value	= 0,
> +		.pull		= PM_GPIO_PULL_NO,
> +		.vin_sel	= PM_GPIO_VIN_S3,
> +		.out_strength	= PM_GPIO_STRENGTH_LOW,
> +		.function	= PM_GPIO_FUNC_1,
> +		.inv_int_pol	= 1,
> +	};
> +
> +	if (gpio_start<  0 || num_gpios<  0 ||
> +		num_gpios>  (PM8XXX_MAX_ROWS + gpio_start))
> +		return -EINVAL;
> +
> +	while (num_gpios--) {
> +		rc = pm8xxx_gpio_config(gpio_start++,&kypd_drv);
> +		if (rc) {
> +			pr_err("%s: FAIL pm8xxx_gpio_config(): rc=%d.\n",
> +				__func__, rc);
> +			return rc;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
> +static int __devinit pmic8xxx_kp_config_sns(int gpio_start, int num_gpios)
> +{
> +	int	rc;
> +	struct pm_gpio kypd_sns = {
> +		.direction	= PM_GPIO_DIR_IN,
> +		.pull		= PM_GPIO_PULL_UP_31P5,
> +		.vin_sel	= PM_GPIO_VIN_S3,
> +		.out_strength	= PM_GPIO_STRENGTH_NO,
> +		.function	= PM_GPIO_FUNC_NORMAL,
> +		.inv_int_pol	= 1,
> +	};
> +
> +	if (gpio_start<  0 || num_gpios<  0 ||
> +		num_gpios>  (PM8XXX_MAX_COLS + gpio_start))
> +		return -EINVAL;
> +
> +	while (num_gpios--) {
> +		rc = pm8xxx_gpio_config(gpio_start++,&kypd_sns);
> +		if (rc) {
> +			pr_err("%s: FAIL pm8xxx_gpio_config(): rc=%d.\n",
> +				__func__, rc);
> +			return rc;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
>   static int pmic8xxx_kp_enable(struct pmic8xxx_kp *kp)
>   {
>   	int rc;
> @@ -609,6 +668,20 @@ static int __devinit pmic8xxx_kp_probe(struct platform_device *pdev)
>   		goto err_get_irq;
>   	}
>
> +	rc = pmic8xxx_kp_config_sns(pdata->cols_gpio_start,
> +					pdata->num_cols);
> +	if (rc<  0) {
> +		dev_err(&pdev->dev, "unable to configure keypad sense lines\n");
> +		goto err_gpio_config;
> +	}
> +
> +	rc = pmic8xxx_kp_config_drv(pdata->rows_gpio_start,
> +					pdata->num_rows);
> +	if (rc<  0) {
> +		dev_err(&pdev->dev, "unable to configure keypad drive lines\n");
> +		goto err_gpio_config;
> +	}
> +
>   	rc = request_any_context_irq(kp->key_sense_irq, pmic8xxx_kp_irq,
>   				 IRQF_TRIGGER_RISING, "pmic-keypad", kp);
>   	if (rc<  0) {
> @@ -645,6 +718,7 @@ err_pmic_reg_read:
>   	free_irq(kp->key_stuck_irq, NULL);
>   err_req_stuck_irq:
>   	free_irq(kp->key_sense_irq, NULL);
> +err_gpio_config:
>   err_get_irq:
>   	input_free_device(kp->input);
>   err_alloc_device:
> diff --git a/include/linux/input/pmic8xxx-keypad.h b/include/linux/input/pmic8xxx-keypad.h
> index fc2ac4c..5f1e2f9 100644
> --- a/include/linux/input/pmic8xxx-keypad.h
> +++ b/include/linux/input/pmic8xxx-keypad.h
> @@ -38,6 +38,8 @@ struct pm8xxx_keypad_platform_data {
>
>   	unsigned int num_cols;
>   	unsigned int num_rows;
> +	unsigned int rows_gpio_start;
> +	unsigned int cols_gpio_start;
>
>   	unsigned int debounce_ms;
>   	unsigned int scan_delay_ms;