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path: root/drivers/nfc/microread/mei.c
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Diffstat (limited to 'drivers/nfc/microread/mei.c')
-rw-r--r--drivers/nfc/microread/mei.c139
1 files changed, 9 insertions, 130 deletions
diff --git a/drivers/nfc/microread/mei.c b/drivers/nfc/microread/mei.c
index ca33ae1..1ad044d 100644
--- a/drivers/nfc/microread/mei.c
+++ b/drivers/nfc/microread/mei.c
@@ -19,151 +19,31 @@
*/
#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/gpio.h>
-#include <linux/mei_cl_bus.h>
-
+#include <linux/mod_devicetable.h>
#include <linux/nfc.h>
#include <net/nfc/hci.h>
#include <net/nfc/llc.h>
+#include "../mei_phy.h"
#include "microread.h"
#define MICROREAD_DRIVER_NAME "microread"
-struct mei_nfc_hdr {
- u8 cmd;
- u8 status;
- u16 req_id;
- u32 reserved;
- u16 data_size;
-} __attribute__((packed));
-
-#define MEI_NFC_HEADER_SIZE 10
-#define MEI_NFC_MAX_HCI_PAYLOAD 300
-#define MEI_NFC_MAX_READ (MEI_NFC_HEADER_SIZE + MEI_NFC_MAX_HCI_PAYLOAD)
-
-struct microread_mei_phy {
- struct mei_cl_device *device;
- struct nfc_hci_dev *hdev;
-
- int powered;
-
- int hard_fault; /*
- * < 0 if hardware error occured (e.g. i2c err)
- * and prevents normal operation.
- */
-};
-
-#define MEI_DUMP_SKB_IN(info, skb) \
-do { \
- pr_debug("%s:\n", info); \
- print_hex_dump(KERN_DEBUG, "mei in : ", DUMP_PREFIX_OFFSET, \
- 16, 1, (skb)->data, (skb)->len, 0); \
-} while (0)
-
-#define MEI_DUMP_SKB_OUT(info, skb) \
-do { \
- pr_debug("%s:\n", info); \
- print_hex_dump(KERN_DEBUG, "mei out: ", DUMP_PREFIX_OFFSET, \
- 16, 1, (skb)->data, (skb)->len, 0); \
-} while (0)
-
-static int microread_mei_enable(void *phy_id)
-{
- struct microread_mei_phy *phy = phy_id;
-
- pr_info(DRIVER_DESC ": %s\n", __func__);
-
- phy->powered = 1;
-
- return 0;
-}
-
-static void microread_mei_disable(void *phy_id)
-{
- struct microread_mei_phy *phy = phy_id;
-
- pr_info(DRIVER_DESC ": %s\n", __func__);
-
- phy->powered = 0;
-}
-
-/*
- * Writing a frame must not return the number of written bytes.
- * It must return either zero for success, or <0 for error.
- * In addition, it must not alter the skb
- */
-static int microread_mei_write(void *phy_id, struct sk_buff *skb)
-{
- struct microread_mei_phy *phy = phy_id;
- int r;
-
- MEI_DUMP_SKB_OUT("mei frame sent", skb);
-
- r = mei_cl_send(phy->device, skb->data, skb->len);
- if (r > 0)
- r = 0;
-
- return r;
-}
-
-static void microread_event_cb(struct mei_cl_device *device, u32 events,
- void *context)
-{
- struct microread_mei_phy *phy = context;
-
- if (phy->hard_fault != 0)
- return;
-
- if (events & BIT(MEI_CL_EVENT_RX)) {
- struct sk_buff *skb;
- int reply_size;
-
- skb = alloc_skb(MEI_NFC_MAX_READ, GFP_KERNEL);
- if (!skb)
- return;
-
- reply_size = mei_cl_recv(device, skb->data, MEI_NFC_MAX_READ);
- if (reply_size < MEI_NFC_HEADER_SIZE) {
- kfree(skb);
- return;
- }
-
- skb_put(skb, reply_size);
- skb_pull(skb, MEI_NFC_HEADER_SIZE);
-
- MEI_DUMP_SKB_IN("mei frame read", skb);
-
- nfc_hci_recv_frame(phy->hdev, skb);
- }
-}
-
-static struct nfc_phy_ops mei_phy_ops = {
- .write = microread_mei_write,
- .enable = microread_mei_enable,
- .disable = microread_mei_disable,
-};
-
static int microread_mei_probe(struct mei_cl_device *device,
const struct mei_cl_device_id *id)
{
- struct microread_mei_phy *phy;
+ struct nfc_mei_phy *phy;
int r;
pr_info("Probing NFC microread\n");
- phy = kzalloc(sizeof(struct microread_mei_phy), GFP_KERNEL);
+ phy = nfc_mei_phy_alloc(device);
if (!phy) {
pr_err("Cannot allocate memory for microread mei phy.\n");
return -ENOMEM;
}
- phy->device = device;
- mei_cl_set_drvdata(device, phy);
-
- r = mei_cl_register_event_cb(device, microread_event_cb, phy);
+ r = mei_cl_register_event_cb(device, nfc_mei_event_cb, phy);
if (r) {
pr_err(MICROREAD_DRIVER_NAME ": event cb registration failed\n");
goto err_out;
@@ -178,23 +58,22 @@ static int microread_mei_probe(struct mei_cl_device *device,
return 0;
err_out:
- kfree(phy);
+ nfc_mei_phy_free(phy);
return r;
}
static int microread_mei_remove(struct mei_cl_device *device)
{
- struct microread_mei_phy *phy = mei_cl_get_drvdata(device);
+ struct nfc_mei_phy *phy = mei_cl_get_drvdata(device);
pr_info("Removing microread\n");
microread_remove(phy->hdev);
- if (phy->powered)
- microread_mei_disable(phy);
+ nfc_mei_phy_disable(phy);
- kfree(phy);
+ nfc_mei_phy_free(phy);
return 0;
}
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