diff mbox

mmc: host: atmel-mci: Add support for non-removable slots

Message ID 1415013179-16823-1-git-send-email-timo.kokkonen@offcode.fi (mailing list archive)
State New, archived
Headers show

Commit Message

Timo Kokkonen Nov. 3, 2014, 11:12 a.m. UTC
Add support for non-removable slots which have no card detection GPIO
and which should not be polled for a card change.

Signed-off-by: Timo Kokkonen <timo.kokkonen@offcode.fi>
---
 drivers/mmc/host/atmel-mci.c | 11 +++++++++--
 include/linux/atmel-mci.h    |  2 ++
 2 files changed, 11 insertions(+), 2 deletions(-)

Comments

Ludovic Desroches Nov. 3, 2014, 3:57 p.m. UTC | #1
On Mon, Nov 03, 2014 at 01:12:59PM +0200, Timo Kokkonen wrote:
> Add support for non-removable slots which have no card detection GPIO
> and which should not be polled for a card change.
> 
> Signed-off-by: Timo Kokkonen <timo.kokkonen@offcode.fi>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>

Thanks

> ---
>  drivers/mmc/host/atmel-mci.c | 11 +++++++++--
>  include/linux/atmel-mci.h    |  2 ++
>  2 files changed, 11 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> index 77250d4..4de1a31 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -560,6 +560,9 @@ atmci_of_init(struct platform_device *pdev)
>  		pdata->slot[slot_id].detect_is_active_high =
>  			of_property_read_bool(cnp, "cd-inverted");
>  
> +		pdata->slot[slot_id].non_removable =
> +			of_property_read_bool(cnp, "non-removable");
> +
>  		pdata->slot[slot_id].wp_pin =
>  			of_get_named_gpio(cnp, "wp-gpios", 0);
>  	}
> @@ -2206,8 +2209,12 @@ static int __init atmci_init_slot(struct atmel_mci *host,
>  		}
>  	}
>  
> -	if (!gpio_is_valid(slot->detect_pin))
> -		mmc->caps |= MMC_CAP_NEEDS_POLL;
> +	if (!gpio_is_valid(slot->detect_pin)) {
> +		if (slot_data->non_removable)
> +			mmc->caps |= MMC_CAP_NONREMOVABLE;
> +		else
> +			mmc->caps |= MMC_CAP_NEEDS_POLL;
> +	}
>  
>  	if (gpio_is_valid(slot->wp_pin)) {
>  		if (devm_gpio_request(&host->pdev->dev, slot->wp_pin,
> diff --git a/include/linux/atmel-mci.h b/include/linux/atmel-mci.h
> index 91b77f8..9177947 100644
> --- a/include/linux/atmel-mci.h
> +++ b/include/linux/atmel-mci.h
> @@ -11,6 +11,7 @@
>   * @detect_pin: GPIO pin wired to the card detect switch
>   * @wp_pin: GPIO pin wired to the write protect sensor
>   * @detect_is_active_high: The state of the detect pin when it is active
> + * @non_removable: The slot is not removable, only detect once
>   *
>   * If a given slot is not present on the board, @bus_width should be
>   * set to 0. The other fields are ignored in this case.
> @@ -26,6 +27,7 @@ struct mci_slot_pdata {
>  	int			detect_pin;
>  	int			wp_pin;
>  	bool			detect_is_active_high;
> +	bool			non_removable;
>  };
>  
>  /**
> -- 
> 1.9.1
>
Ulf Hansson Nov. 4, 2014, 7:41 a.m. UTC | #2
On 3 November 2014 12:12, Timo Kokkonen <timo.kokkonen@offcode.fi> wrote:
> Add support for non-removable slots which have no card detection GPIO
> and which should not be polled for a card change.
>
> Signed-off-by: Timo Kokkonen <timo.kokkonen@offcode.fi>

Thanks! Applied for next.

Kind regards
Uffe

> ---
>  drivers/mmc/host/atmel-mci.c | 11 +++++++++--
>  include/linux/atmel-mci.h    |  2 ++
>  2 files changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> index 77250d4..4de1a31 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -560,6 +560,9 @@ atmci_of_init(struct platform_device *pdev)
>                 pdata->slot[slot_id].detect_is_active_high =
>                         of_property_read_bool(cnp, "cd-inverted");
>
> +               pdata->slot[slot_id].non_removable =
> +                       of_property_read_bool(cnp, "non-removable");
> +
>                 pdata->slot[slot_id].wp_pin =
>                         of_get_named_gpio(cnp, "wp-gpios", 0);
>         }
> @@ -2206,8 +2209,12 @@ static int __init atmci_init_slot(struct atmel_mci *host,
>                 }
>         }
>
> -       if (!gpio_is_valid(slot->detect_pin))
> -               mmc->caps |= MMC_CAP_NEEDS_POLL;
> +       if (!gpio_is_valid(slot->detect_pin)) {
> +               if (slot_data->non_removable)
> +                       mmc->caps |= MMC_CAP_NONREMOVABLE;
> +               else
> +                       mmc->caps |= MMC_CAP_NEEDS_POLL;
> +       }
>
>         if (gpio_is_valid(slot->wp_pin)) {
>                 if (devm_gpio_request(&host->pdev->dev, slot->wp_pin,
> diff --git a/include/linux/atmel-mci.h b/include/linux/atmel-mci.h
> index 91b77f8..9177947 100644
> --- a/include/linux/atmel-mci.h
> +++ b/include/linux/atmel-mci.h
> @@ -11,6 +11,7 @@
>   * @detect_pin: GPIO pin wired to the card detect switch
>   * @wp_pin: GPIO pin wired to the write protect sensor
>   * @detect_is_active_high: The state of the detect pin when it is active
> + * @non_removable: The slot is not removable, only detect once
>   *
>   * If a given slot is not present on the board, @bus_width should be
>   * set to 0. The other fields are ignored in this case.
> @@ -26,6 +27,7 @@ struct mci_slot_pdata {
>         int                     detect_pin;
>         int                     wp_pin;
>         bool                    detect_is_active_high;
> +       bool                    non_removable;
>  };
>
>  /**
> --
> 1.9.1
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
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> More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 77250d4..4de1a31 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -560,6 +560,9 @@  atmci_of_init(struct platform_device *pdev)
 		pdata->slot[slot_id].detect_is_active_high =
 			of_property_read_bool(cnp, "cd-inverted");
 
+		pdata->slot[slot_id].non_removable =
+			of_property_read_bool(cnp, "non-removable");
+
 		pdata->slot[slot_id].wp_pin =
 			of_get_named_gpio(cnp, "wp-gpios", 0);
 	}
@@ -2206,8 +2209,12 @@  static int __init atmci_init_slot(struct atmel_mci *host,
 		}
 	}
 
-	if (!gpio_is_valid(slot->detect_pin))
-		mmc->caps |= MMC_CAP_NEEDS_POLL;
+	if (!gpio_is_valid(slot->detect_pin)) {
+		if (slot_data->non_removable)
+			mmc->caps |= MMC_CAP_NONREMOVABLE;
+		else
+			mmc->caps |= MMC_CAP_NEEDS_POLL;
+	}
 
 	if (gpio_is_valid(slot->wp_pin)) {
 		if (devm_gpio_request(&host->pdev->dev, slot->wp_pin,
diff --git a/include/linux/atmel-mci.h b/include/linux/atmel-mci.h
index 91b77f8..9177947 100644
--- a/include/linux/atmel-mci.h
+++ b/include/linux/atmel-mci.h
@@ -11,6 +11,7 @@ 
  * @detect_pin: GPIO pin wired to the card detect switch
  * @wp_pin: GPIO pin wired to the write protect sensor
  * @detect_is_active_high: The state of the detect pin when it is active
+ * @non_removable: The slot is not removable, only detect once
  *
  * If a given slot is not present on the board, @bus_width should be
  * set to 0. The other fields are ignored in this case.
@@ -26,6 +27,7 @@  struct mci_slot_pdata {
 	int			detect_pin;
 	int			wp_pin;
 	bool			detect_is_active_high;
+	bool			non_removable;
 };
 
 /**