summaryrefslogtreecommitdiffstats
path: root/drivers/nfc
diff options
context:
space:
mode:
authorAmitkumar Karwar <akarwar@marvell.com>2014-01-06 12:58:20 -0800
committerSamuel Ortiz <sameo@linux.intel.com>2014-01-07 01:32:41 +0100
commit15203b4c79aaeb443f89ac3190eed3447bf2178b (patch)
treee645516b2407aacf4692c486cbbf306289aace76 /drivers/nfc
parentf26e30cc6b50ba81e30ca3016c29ad4b48b93eaa (diff)
downloadlinux-15203b4c79aaeb443f89ac3190eed3447bf2178b.tar.gz
linux-15203b4c79aaeb443f89ac3190eed3447bf2178b.tar.bz2
linux-15203b4c79aaeb443f89ac3190eed3447bf2178b.zip
NFC: nfcmrvl: Add setup handler
Marvell nfc device provides support for external coexistance control. It allows Device Host to inhibit the NFCC from polling when required by asserting a GPIO pin. A second pin allows the DH to have feedback on the current NFCC state. The required configuration for this feature is done in setup handler. Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
-rw-r--r--drivers/nfc/nfcmrvl/main.c15
-rw-r--r--drivers/nfc/nfcmrvl/nfcmrvl.h6
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/nfc/nfcmrvl/main.c b/drivers/nfc/nfcmrvl/main.c
index 396fc270ffc3..5f91d4571429 100644
--- a/drivers/nfc/nfcmrvl/main.c
+++ b/drivers/nfc/nfcmrvl/main.c
@@ -66,10 +66,25 @@ static int nfcmrvl_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
return priv->if_ops->nci_send(priv, skb);
}
+static int nfcmrvl_nci_setup(struct nci_dev *ndev)
+{
+ __u8 val;
+
+ val = NFCMRVL_GPIO_PIN_NFC_NOT_ALLOWED;
+ nci_set_config(ndev, NFCMRVL_NOT_ALLOWED_ID, 1, &val);
+ val = NFCMRVL_GPIO_PIN_NFC_ACTIVE;
+ nci_set_config(ndev, NFCMRVL_ACTIVE_ID, 1, &val);
+ val = NFCMRVL_EXT_COEX_ENABLE;
+ nci_set_config(ndev, NFCMRVL_EXT_COEX_ID, 1, &val);
+
+ return 0;
+}
+
static struct nci_ops nfcmrvl_nci_ops = {
.open = nfcmrvl_nci_open,
.close = nfcmrvl_nci_close,
.send = nfcmrvl_nci_send,
+ .setup = nfcmrvl_nci_setup,
};
struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data,
diff --git a/drivers/nfc/nfcmrvl/nfcmrvl.h b/drivers/nfc/nfcmrvl/nfcmrvl.h
index a007175f77fe..54c4a956bd45 100644
--- a/drivers/nfc/nfcmrvl/nfcmrvl.h
+++ b/drivers/nfc/nfcmrvl/nfcmrvl.h
@@ -19,6 +19,12 @@
/* Define private flags: */
#define NFCMRVL_NCI_RUNNING 1
+#define NFCMRVL_EXT_COEX_ID 0xE0
+#define NFCMRVL_NOT_ALLOWED_ID 0xE1
+#define NFCMRVL_ACTIVE_ID 0xE2
+#define NFCMRVL_EXT_COEX_ENABLE 1
+#define NFCMRVL_GPIO_PIN_NFC_NOT_ALLOWED 0xA
+#define NFCMRVL_GPIO_PIN_NFC_ACTIVE 0xB
#define NFCMRVL_NCI_MAX_EVENT_SIZE 260
struct nfcmrvl_private {