diff options
Diffstat (limited to 'drivers/nfc/nfcmrvl/main.c')
| -rw-r--r-- | drivers/nfc/nfcmrvl/main.c | 75 |
1 files changed, 55 insertions, 20 deletions
diff --git a/drivers/nfc/nfcmrvl/main.c b/drivers/nfc/nfcmrvl/main.c index 4a8866d62941..8079ae0de21e 100644 --- a/drivers/nfc/nfcmrvl/main.c +++ b/drivers/nfc/nfcmrvl/main.c @@ -1,7 +1,7 @@ /* * Marvell NFC driver: major functions * - * Copyright (C) 2014, Marvell International Ltd. + * Copyright (C) 2014-2015 Marvell International Ltd. * * This software file (the "File") is distributed by Marvell International * Ltd. under the terms of the GNU General Public License Version 2, June 1991 @@ -25,8 +25,6 @@ #include <net/nfc/nci_core.h> #include "nfcmrvl.h" -#define VERSION "1.0" - static int nfcmrvl_nci_open(struct nci_dev *ndev) { struct nfcmrvl_private *priv = nci_get_drvdata(ndev); @@ -35,6 +33,9 @@ static int nfcmrvl_nci_open(struct nci_dev *ndev) if (test_and_set_bit(NFCMRVL_NCI_RUNNING, &priv->flags)) return 0; + /* Reset possible fault of previous session */ + clear_bit(NFCMRVL_PHY_ERROR, &priv->flags); + err = priv->if_ops->nci_open(priv); if (err) @@ -63,9 +64,6 @@ static int nfcmrvl_nci_send(struct nci_dev *ndev, struct sk_buff *skb) skb->dev = (void *)ndev; - if (!test_bit(NFCMRVL_NCI_RUNNING, &priv->flags)) - return -EBUSY; - if (priv->config.hci_muxed) { unsigned char *hdr; unsigned char len = skb->len; @@ -88,21 +86,30 @@ static int nfcmrvl_nci_setup(struct nci_dev *ndev) return 0; } +static int nfcmrvl_nci_fw_download(struct nci_dev *ndev, + const char *firmware_name) +{ + return nfcmrvl_fw_dnld_start(ndev, firmware_name); +} + static struct nci_ops nfcmrvl_nci_ops = { .open = nfcmrvl_nci_open, .close = nfcmrvl_nci_close, .send = nfcmrvl_nci_send, .setup = nfcmrvl_nci_setup, + .fw_download = nfcmrvl_nci_fw_download, }; -struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data, +struct nfcmrvl_private *nfcmrvl_nci_register_dev(enum nfcmrvl_phy phy, + void *drv_data, struct nfcmrvl_if_ops *ops, struct device *dev, struct nfcmrvl_platform_data *pdata) { struct nfcmrvl_private *priv; int rc; - int headroom = 0; + int headroom; + int tailroom; u32 protocols; priv = kzalloc(sizeof(*priv), GFP_KERNEL); @@ -112,6 +119,7 @@ struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data, priv->drv_data = drv_data; priv->if_ops = ops; priv->dev = dev; + priv->phy = phy; memcpy(&priv->config, pdata, sizeof(*pdata)); @@ -124,8 +132,14 @@ struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data, nfc_err(dev, "failed to request reset_n io\n"); } + if (phy == NFCMRVL_PHY_SPI) { + headroom = NCI_SPI_HDR_LEN; + tailroom = 1; + } else + headroom = tailroom = 0; + if (priv->config.hci_muxed) - headroom = NFCMRVL_HCI_EVENT_HEADER_SIZE; + headroom += NFCMRVL_HCI_EVENT_HEADER_SIZE; protocols = NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK @@ -136,7 +150,7 @@ struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data, | NFC_PROTO_NFC_DEP_MASK; priv->ndev = nci_allocate_device(&nfcmrvl_nci_ops, protocols, - headroom, 0); + headroom, tailroom); if (!priv->ndev) { nfc_err(dev, "nci_allocate_device failed\n"); rc = -ENOMEM; @@ -145,18 +159,26 @@ struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data, nci_set_drvdata(priv->ndev, priv); - nfcmrvl_chip_reset(priv); - rc = nci_register_device(priv->ndev); if (rc) { nfc_err(dev, "nci_register_device failed %d\n", rc); - nci_free_device(priv->ndev); - goto error; + goto error_free_dev; + } + + /* Ensure that controller is powered off */ + nfcmrvl_chip_halt(priv); + + rc = nfcmrvl_fw_dnld_init(priv); + if (rc) { + nfc_err(dev, "failed to initialize FW download %d\n", rc); + goto error_free_dev; } nfc_info(dev, "registered with nci successfully\n"); return priv; +error_free_dev: + nci_free_device(priv->ndev); error: kfree(priv); return ERR_PTR(rc); @@ -167,6 +189,11 @@ void nfcmrvl_nci_unregister_dev(struct nfcmrvl_private *priv) { struct nci_dev *ndev = priv->ndev; + if (priv->ndev->nfc_dev->fw_download_in_progress) + nfcmrvl_fw_dnld_abort(priv); + + nfcmrvl_fw_dnld_deinit(priv); + nci_unregister_device(ndev); nci_free_device(ndev); kfree(priv); @@ -187,6 +214,11 @@ int nfcmrvl_nci_recv_frame(struct nfcmrvl_private *priv, struct sk_buff *skb) } } + if (priv->ndev->nfc_dev->fw_download_in_progress) { + nfcmrvl_fw_dnld_recv_frame(priv, skb); + return 0; + } + if (test_bit(NFCMRVL_NCI_RUNNING, &priv->flags)) nci_recv_frame(priv->ndev, skb); else { @@ -201,10 +233,8 @@ EXPORT_SYMBOL_GPL(nfcmrvl_nci_recv_frame); void nfcmrvl_chip_reset(struct nfcmrvl_private *priv) { - /* - * This function does not take care if someone is using the device. - * To be improved. - */ + /* Reset possible fault of previous session */ + clear_bit(NFCMRVL_PHY_ERROR, &priv->flags); if (priv->config.reset_n_io) { nfc_info(priv->dev, "reset the chip\n"); @@ -215,6 +245,12 @@ void nfcmrvl_chip_reset(struct nfcmrvl_private *priv) nfc_info(priv->dev, "no reset available on this interface\n"); } +void nfcmrvl_chip_halt(struct nfcmrvl_private *priv) +{ + if (priv->config.reset_n_io) + gpio_set_value(priv->config.reset_n_io, 0); +} + #ifdef CONFIG_OF int nfcmrvl_parse_dt(struct device_node *node, @@ -252,6 +288,5 @@ int nfcmrvl_parse_dt(struct device_node *node, EXPORT_SYMBOL_GPL(nfcmrvl_parse_dt); MODULE_AUTHOR("Marvell International Ltd."); -MODULE_DESCRIPTION("Marvell NFC driver ver " VERSION); -MODULE_VERSION(VERSION); +MODULE_DESCRIPTION("Marvell NFC driver"); MODULE_LICENSE("GPL v2"); |