mwifiex: parse device tree node for PCIe

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 accommodate PCIe changes.

Signed-off-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Rajat Jain <rajatja@google.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

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..980b16d 100644 (file)
--- 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 3047c1a..5737cc6 100644 (file)
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -37,6 +37,22 @@ 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 (!of_match_node(mwifiex_pcie_of_match_table, dev->of_node)) {
+               dev_err(dev, "required compatible string missing\n");
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
 static int
 mwifiex_map_pci_memory(struct mwifiex_adapter *adapter, struct sk_buff *skb,
                       size_t size, int flags)
@@ -185,6 +201,7 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
                                        const struct pci_device_id *ent)
 {
        struct pcie_service_card *card;
+       int ret;
 
        pr_debug("info: vendor=0x%4.04X device=0x%4.04X rev=%d\n",
                 pdev->vendor, pdev->device, pdev->revision);
@@ -206,6 +223,13 @@ 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*/
+       if (pdev->dev.of_node) {
+               ret = mwifiex_pcie_probe_of(&pdev->dev);
+               if (ret)
+                       return ret;
+       }
+
        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 0a54e21..b697b61 100644 (file)
--- a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
+++ b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
@@ -2235,7 +2235,8 @@ 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,