diff mbox

[RESEND,v3] mwifiex: parse device tree node for PCIe

Message ID 1475167183-18376-1-git-send-email-akarwar@marvell.com
State Changes Requested, archived
Headers show

Commit Message

Amitkumar Karwar Sept. 29, 2016, 4:39 p.m. UTC
From: Xinming Hu <huxm@marvell.com>

This patch derives device tree node from pcie bus layer framework.
Device tree bindings file has been renamed(marvell-sd8xxx.txt ->
marvell-8xxx.txt) to accomodate PCIe changes.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
---
v2: Included vendor and product IDs in compatible strings for PCIe
chipsets(Rob Herring)
v3: Patch is created using -M option so that it will only include diff of
original and renamed files(Rob Herring)
Resend v3: Resending the patch because I missed to include device tree mailing
while sending v3.
---
 .../{marvell-sd8xxx.txt => marvell-8xxx.txt}         |  8 +++++---
 drivers/net/wireless/marvell/mwifiex/pcie.c          | 20 ++++++++++++++++++++
 drivers/net/wireless/marvell/mwifiex/sta_cmd.c       |  3 ++-
 3 files changed, 27 insertions(+), 4 deletions(-)
 rename Documentation/devicetree/bindings/net/wireless/{marvell-sd8xxx.txt => marvell-8xxx.txt} (91%)

Comments

Rajat Jain Sept. 29, 2016, 4:54 p.m. UTC | #1
[+brian]

On Thu, Sep 29, 2016 at 9:39 AM, Amitkumar Karwar <akarwar@marvell.com> wrote:
> From: Xinming Hu <huxm@marvell.com>
>
> This patch derives device tree node from pcie bus layer framework.
> Device tree bindings file has been renamed(marvell-sd8xxx.txt ->
> marvell-8xxx.txt) to accomodate PCIe changes.
>
> Signed-off-by: Xinming Hu <huxm@marvell.com>
> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
> ---
> v2: Included vendor and product IDs in compatible strings for PCIe
> chipsets(Rob Herring)
> v3: Patch is created using -M option so that it will only include diff of
> original and renamed files(Rob Herring)
> Resend v3: Resending the patch because I missed to include device tree mailing
> while sending v3.
> ---
>  .../{marvell-sd8xxx.txt => marvell-8xxx.txt}         |  8 +++++---
>  drivers/net/wireless/marvell/mwifiex/pcie.c          | 20 ++++++++++++++++++++
>  drivers/net/wireless/marvell/mwifiex/sta_cmd.c       |  3 ++-
>  3 files changed, 27 insertions(+), 4 deletions(-)
>  rename Documentation/devicetree/bindings/net/wireless/{marvell-sd8xxx.txt => marvell-8xxx.txt} (91%)
>
> diff --git a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> similarity index 91%
> rename from Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> rename to Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> index c421aba..dfe5f8e 100644
> --- a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> +++ b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> @@ -1,8 +1,8 @@
> -Marvell 8897/8997 (sd8897/sd8997) SDIO devices
> +Marvell 8897/8997 (sd8897/sd8997/pcie8997) SDIO/PCIE devices
>  ------
>
> -This node provides properties for controlling the marvell sdio wireless device.
> -The node is expected to be specified as a child node to the SDIO controller that
> +This node provides properties for controlling the marvell sdio/pcie wireless device.
> +The node is expected to be specified as a child node to the SDIO/PCIE controller that
>  connects the device to the system.
>
>  Required properties:
> @@ -10,6 +10,8 @@ Required properties:
>    - compatible : should be one of the following:
>         * "marvell,sd8897"
>         * "marvell,sd8997"
> +       * "pci11ab,2b42"
> +       * "pci1b4b,2b42"
>
>  Optional properties:
>
> diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
> index 063c707..f1eeb73 100644
> --- a/drivers/net/wireless/marvell/mwifiex/pcie.c
> +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
> @@ -37,6 +37,23 @@ static struct mwifiex_if_ops pcie_ops;
>
>  static struct semaphore add_remove_card_sem;
>
> +static const struct of_device_id mwifiex_pcie_of_match_table[] = {
> +       { .compatible = "pci11ab,2b42" },
> +       { .compatible = "pci1b4b,2b42" },
> +       { }
> +};
> +
> +static int mwifiex_pcie_probe_of(struct device *dev)
> +{
> +       if (!dev->of_node ||
> +           !of_match_node(mwifiex_pcie_of_match_table, dev->of_node)) {
> +               pr_err("pcie device node not available");
> +               return -1;
> +       }
> +
> +       return 0;
> +}
> +
>  static int
>  mwifiex_map_pci_memory(struct mwifiex_adapter *adapter, struct sk_buff *skb,
>                        size_t size, int flags)
> @@ -206,6 +223,9 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
>                 card->pcie.can_ext_scan = data->can_ext_scan;
>         }
>
> +       /* device tree node parsing and platform specific configuration*/
> +       mwifiex_pcie_probe_of(&pdev->dev);
> +
>         if (mwifiex_add_card(card, &add_remove_card_sem, &pcie_ops,
>                              MWIFIEX_PCIE)) {
>                 pr_err("%s failed\n", __func__);
> diff --git a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
> index 638d30a..f2a7a13 100644
> --- a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
> +++ b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
> @@ -2218,7 +2218,8 @@ int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8 first_sta, bool init)
>                  * The cal-data can be read from device tree and/or
>                  * a configuration file and downloaded to firmware.
>                  */
> -               if (priv->adapter->iface_type == MWIFIEX_SDIO &&
> +               if ((priv->adapter->iface_type == MWIFIEX_SDIO ||
> +                   priv->adapter->iface_type == MWIFIEX_PCIE) &&
>                     adapter->dev->of_node) {
>                         adapter->dt_node = adapter->dev->of_node;
>                         if (of_property_read_u32(adapter->dt_node,
> --
> 1.9.1
>
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Rob Herring (Arm) Oct. 4, 2016, 1:34 p.m. UTC | #2
On Thu, Sep 29, 2016 at 10:09:43PM +0530, Amitkumar Karwar wrote:
> From: Xinming Hu <huxm@marvell.com>
> 
> This patch derives device tree node from pcie bus layer framework.
> Device tree bindings file has been renamed(marvell-sd8xxx.txt ->
> marvell-8xxx.txt) to accomodate PCIe changes.
> 
> Signed-off-by: Xinming Hu <huxm@marvell.com>
> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
> ---
> v2: Included vendor and product IDs in compatible strings for PCIe
> chipsets(Rob Herring)
> v3: Patch is created using -M option so that it will only include diff of
> original and renamed files(Rob Herring)
> Resend v3: Resending the patch because I missed to include device tree mailing
> while sending v3.
> ---
>  .../{marvell-sd8xxx.txt => marvell-8xxx.txt}         |  8 +++++---
>  drivers/net/wireless/marvell/mwifiex/pcie.c          | 20 ++++++++++++++++++++
>  drivers/net/wireless/marvell/mwifiex/sta_cmd.c       |  3 ++-
>  3 files changed, 27 insertions(+), 4 deletions(-)
>  rename Documentation/devicetree/bindings/net/wireless/{marvell-sd8xxx.txt => marvell-8xxx.txt} (91%)
> 
> diff --git a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> similarity index 91%
> rename from Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> rename to Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> index c421aba..dfe5f8e 100644
> --- a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> +++ b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> @@ -1,8 +1,8 @@
> -Marvell 8897/8997 (sd8897/sd8997) SDIO devices
> +Marvell 8897/8997 (sd8897/sd8997/pcie8997) SDIO/PCIE devices
>  ------
>  
> -This node provides properties for controlling the marvell sdio wireless device.
> -The node is expected to be specified as a child node to the SDIO controller that
> +This node provides properties for controlling the marvell sdio/pcie wireless device.

Capitalize SDIO/PCIe

> +The node is expected to be specified as a child node to the SDIO/PCIE controller that
>  connects the device to the system.
>  
>  Required properties:
> @@ -10,6 +10,8 @@ Required properties:
>    - compatible : should be one of the following:
>  	* "marvell,sd8897"
>  	* "marvell,sd8997"
> +	* "pci11ab,2b42"
> +	* "pci1b4b,2b42"

The string is pciVVVV,DDDD. Looks like you have vendor and device 
swapped.

Rob
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Brian Norris Oct. 5, 2016, 7:48 p.m. UTC | #3
Hi,

On Thu, Sep 29, 2016 at 10:09:43PM +0530, Amitkumar Karwar wrote:
> From: Xinming Hu <huxm@marvell.com>
> 
> This patch derives device tree node from pcie bus layer framework.
> Device tree bindings file has been renamed(marvell-sd8xxx.txt ->
> marvell-8xxx.txt) to accomodate PCIe changes.
> 
> Signed-off-by: Xinming Hu <huxm@marvell.com>
> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
> ---
> v2: Included vendor and product IDs in compatible strings for PCIe
> chipsets(Rob Herring)
> v3: Patch is created using -M option so that it will only include diff of
> original and renamed files(Rob Herring)
> Resend v3: Resending the patch because I missed to include device tree mailing
> while sending v3.
> ---

Why is this patch so different than the SDIO DT handling for the same
driver?

>  .../{marvell-sd8xxx.txt => marvell-8xxx.txt}         |  8 +++++---
>  drivers/net/wireless/marvell/mwifiex/pcie.c          | 20 ++++++++++++++++++++
>  drivers/net/wireless/marvell/mwifiex/sta_cmd.c       |  3 ++-
>  3 files changed, 27 insertions(+), 4 deletions(-)
>  rename Documentation/devicetree/bindings/net/wireless/{marvell-sd8xxx.txt => marvell-8xxx.txt} (91%)
> 
> diff --git a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> similarity index 91%
> rename from Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> rename to Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> index c421aba..dfe5f8e 100644
> --- a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> +++ b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
> @@ -1,8 +1,8 @@
> -Marvell 8897/8997 (sd8897/sd8997) SDIO devices
> +Marvell 8897/8997 (sd8897/sd8997/pcie8997) SDIO/PCIE devices
>  ------
>  
> -This node provides properties for controlling the marvell sdio wireless device.
> -The node is expected to be specified as a child node to the SDIO controller that
> +This node provides properties for controlling the marvell sdio/pcie wireless device.
> +The node is expected to be specified as a child node to the SDIO/PCIE controller that
>  connects the device to the system.
>  
>  Required properties:
> @@ -10,6 +10,8 @@ Required properties:
>    - compatible : should be one of the following:
>  	* "marvell,sd8897"
>  	* "marvell,sd8997"
> +	* "pci11ab,2b42"
> +	* "pci1b4b,2b42"
>  
>  Optional properties:
>  
> diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
> index 063c707..f1eeb73 100644
> --- a/drivers/net/wireless/marvell/mwifiex/pcie.c
> +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
> @@ -37,6 +37,23 @@ static struct mwifiex_if_ops pcie_ops;
>  
>  static struct semaphore add_remove_card_sem;
>  
> +static const struct of_device_id mwifiex_pcie_of_match_table[] = {
> +	{ .compatible = "pci11ab,2b42" },
> +	{ .compatible = "pci1b4b,2b42" },
> +	{ }
> +};
> +
> +static int mwifiex_pcie_probe_of(struct device *dev)
> +{
> +	if (!dev->of_node ||

In sdio.c, this check is done silently; that way, we don't error out
(and print an error string) just because there's no DT node. And I think
that makes sense.

Maybe pull this condition out separately and return 0?

> +	    !of_match_node(mwifiex_pcie_of_match_table, dev->of_node)) {
> +		pr_err("pcie device node not available");
> +		return -1;
> +	}
> +

Just an FYI, the equivalent sdio.c code (mwifiex_sdio_probe_of()) also
parses a platform-specific wakeup pin. Rajat and I were considering
moving that to mwifiex_register(), so we can get the same handling in
pcie.c. But I think it's probably sane to leave the compatible table
here in the interface driver for now.

> +	return 0;
> +}
> +
>  static int
>  mwifiex_map_pci_memory(struct mwifiex_adapter *adapter, struct sk_buff *skb,
>  		       size_t size, int flags)
> @@ -206,6 +223,9 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
>  		card->pcie.can_ext_scan = data->can_ext_scan;
>  	}
>  
> +	/* device tree node parsing and platform specific configuration*/
> +	mwifiex_pcie_probe_of(&pdev->dev);

You aren't catching the error code here. Probably because you're wrongly
returning an error above for the !of_node case.

Brian

> +
>  	if (mwifiex_add_card(card, &add_remove_card_sem, &pcie_ops,
>  			     MWIFIEX_PCIE)) {
>  		pr_err("%s failed\n", __func__);
> diff --git a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
> index 638d30a..f2a7a13 100644
> --- a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
> +++ b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
> @@ -2218,7 +2218,8 @@ int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8 first_sta, bool init)
>  		 * The cal-data can be read from device tree and/or
>  		 * a configuration file and downloaded to firmware.
>  		 */
> -		if (priv->adapter->iface_type == MWIFIEX_SDIO &&
> +		if ((priv->adapter->iface_type == MWIFIEX_SDIO ||
> +		    priv->adapter->iface_type == MWIFIEX_PCIE) &&
>  		    adapter->dev->of_node) {
>  			adapter->dt_node = adapter->dev->of_node;
>  			if (of_property_read_u32(adapter->dt_node,
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diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
similarity index 91%
rename from Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
rename to Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
index c421aba..dfe5f8e 100644
--- a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
+++ b/Documentation/devicetree/bindings/net/wireless/marvell-8xxx.txt
@@ -1,8 +1,8 @@ 
-Marvell 8897/8997 (sd8897/sd8997) SDIO devices
+Marvell 8897/8997 (sd8897/sd8997/pcie8997) SDIO/PCIE devices
 ------
 
-This node provides properties for controlling the marvell sdio wireless device.
-The node is expected to be specified as a child node to the SDIO controller that
+This node provides properties for controlling the marvell sdio/pcie wireless device.
+The node is expected to be specified as a child node to the SDIO/PCIE controller that
 connects the device to the system.
 
 Required properties:
@@ -10,6 +10,8 @@  Required properties:
   - compatible : should be one of the following:
 	* "marvell,sd8897"
 	* "marvell,sd8997"
+	* "pci11ab,2b42"
+	* "pci1b4b,2b42"
 
 Optional properties:
 
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 063c707..f1eeb73 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -37,6 +37,23 @@  static struct mwifiex_if_ops pcie_ops;
 
 static struct semaphore add_remove_card_sem;
 
+static const struct of_device_id mwifiex_pcie_of_match_table[] = {
+	{ .compatible = "pci11ab,2b42" },
+	{ .compatible = "pci1b4b,2b42" },
+	{ }
+};
+
+static int mwifiex_pcie_probe_of(struct device *dev)
+{
+	if (!dev->of_node ||
+	    !of_match_node(mwifiex_pcie_of_match_table, dev->of_node)) {
+		pr_err("pcie device node not available");
+		return -1;
+	}
+
+	return 0;
+}
+
 static int
 mwifiex_map_pci_memory(struct mwifiex_adapter *adapter, struct sk_buff *skb,
 		       size_t size, int flags)
@@ -206,6 +223,9 @@  static int mwifiex_pcie_probe(struct pci_dev *pdev,
 		card->pcie.can_ext_scan = data->can_ext_scan;
 	}
 
+	/* device tree node parsing and platform specific configuration*/
+	mwifiex_pcie_probe_of(&pdev->dev);
+
 	if (mwifiex_add_card(card, &add_remove_card_sem, &pcie_ops,
 			     MWIFIEX_PCIE)) {
 		pr_err("%s failed\n", __func__);
diff --git a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
index 638d30a..f2a7a13 100644
--- a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
+++ b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
@@ -2218,7 +2218,8 @@  int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8 first_sta, bool init)
 		 * The cal-data can be read from device tree and/or
 		 * a configuration file and downloaded to firmware.
 		 */
-		if (priv->adapter->iface_type == MWIFIEX_SDIO &&
+		if ((priv->adapter->iface_type == MWIFIEX_SDIO ||
+		    priv->adapter->iface_type == MWIFIEX_PCIE) &&
 		    adapter->dev->of_node) {
 			adapter->dt_node = adapter->dev->of_node;
 			if (of_property_read_u32(adapter->dt_node,