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NFC: nfcmrvl: add firmware download support

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Implement firmware download protocol for Marvell NFC controllers.
This protocol is based on NCI frames that's why parts of its
implementation use some NCI generic functions.

Signed-off-by: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Vincent Cuissard 2015-10-26 10:27:39 +01:00 committed by Samuel Ortiz
parent e5629d2947
commit 3194c68701
7 changed files with 718 additions and 10 deletions
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2
drivers/nfc/nfcmrvl/Makefile
View File

@ -2,7 +2,7 @@
# Makefile for NFCMRVL NCI based NFC driver
#
nfcmrvl-y += main.o
nfcmrvl-y += main.o fw_dnld.o
obj-$(CONFIG_NFC_MRVL) += nfcmrvl.o
nfcmrvl_usb-y += usb.o

553
drivers/nfc/nfcmrvl/fw_dnld.c Normal file
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@ -0,0 +1,553 @@
/*
* Marvell NFC driver: Firmware downloader
*
* Copyright (C) 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
* (the "License"). You may use, redistribute and/or modify this File in
* accordance with the terms and conditions of the License, a copy of which
* is available on the worldwide web at
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
* this warranty disclaimer.
*/
#include <linux/module.h>
#include <linux/unaligned/access_ok.h>
#include <linux/firmware.h>
#include <linux/nfc.h>
#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>
#include "nfcmrvl.h"
#define FW_DNLD_TIMEOUT 15000
#define NCI_OP_PROPRIETARY_BOOT_CMD nci_opcode_pack(NCI_GID_PROPRIETARY, \
NCI_OP_PROP_BOOT_CMD)
/* FW download states */
enum {
STATE_RESET = 0,
STATE_INIT,
STATE_SET_REF_CLOCK,
STATE_SET_HI_CONFIG,
STATE_OPEN_LC,
STATE_FW_DNLD,
STATE_CLOSE_LC,
STATE_BOOT
};
enum {
SUBSTATE_WAIT_COMMAND = 0,
SUBSTATE_WAIT_ACK_CREDIT,
SUBSTATE_WAIT_NACK_CREDIT,
SUBSTATE_WAIT_DATA_CREDIT,
};
/*
** Patterns for responses
*/
static const uint8_t nci_pattern_core_reset_ntf[] = {
0x60, 0x00, 0x02, 0xA0, 0x01
};
static const uint8_t nci_pattern_core_init_rsp[] = {
0x40, 0x01, 0x11
};
static const uint8_t nci_pattern_core_set_config_rsp[] = {
0x40, 0x02, 0x02, 0x00, 0x00
};
static const uint8_t nci_pattern_core_conn_create_rsp[] = {
0x40, 0x04, 0x04, 0x00
};
static const uint8_t nci_pattern_core_conn_close_rsp[] = {
0x40, 0x05, 0x01, 0x00
};
static const uint8_t nci_pattern_core_conn_credits_ntf[] = {
0x60, 0x06, 0x03, 0x01, NCI_CORE_LC_CONNID_PROP_FW_DL, 0x01
};
static const uint8_t nci_pattern_proprietary_boot_rsp[] = {
0x4F, 0x3A, 0x01, 0x00
};
static struct sk_buff *alloc_lc_skb(struct nfcmrvl_private *priv, uint8_t plen)
{
struct sk_buff *skb;
struct nci_data_hdr *hdr;
skb = nci_skb_alloc(priv->ndev, (NCI_DATA_HDR_SIZE + plen), GFP_KERNEL);
if (!skb) {
pr_err("no memory for data\n");
return NULL;
}
hdr = (struct nci_data_hdr *) skb_put(skb, NCI_DATA_HDR_SIZE);
hdr->conn_id = NCI_CORE_LC_CONNID_PROP_FW_DL;
hdr->rfu = 0;
hdr->plen = plen;
nci_mt_set((__u8 *)hdr, NCI_MT_DATA_PKT);
nci_pbf_set((__u8 *)hdr, NCI_PBF_LAST);
return skb;
}
static void fw_dnld_over(struct nfcmrvl_private *priv, u32 error)
{
if (priv->fw_dnld.fw) {
release_firmware(priv->fw_dnld.fw);
priv->fw_dnld.fw = NULL;
priv->fw_dnld.header = NULL;
priv->fw_dnld.binary_config = NULL;
}
atomic_set(&priv->ndev->cmd_cnt, 0);
del_timer_sync(&priv->ndev->cmd_timer);
del_timer_sync(&priv->fw_dnld.timer);
nfc_info(priv->dev, "FW loading over (%d)]\n", error);
if (error != 0) {
/* failed, halt the chip to avoid power consumption */
nfcmrvl_chip_halt(priv);
}
nfc_fw_download_done(priv->ndev->nfc_dev, priv->fw_dnld.name, error);
}
static void fw_dnld_timeout(unsigned long arg)
{
struct nfcmrvl_private *priv = (struct nfcmrvl_private *) arg;
nfc_err(priv->dev, "FW loading timeout");
priv->fw_dnld.state = STATE_RESET;
fw_dnld_over(priv, -ETIMEDOUT);
}
static int process_state_reset(struct nfcmrvl_private *priv,
struct sk_buff *skb)
{
if (sizeof(nci_pattern_core_reset_ntf) != skb->len ||
memcmp(skb->data, nci_pattern_core_reset_ntf,
sizeof(nci_pattern_core_reset_ntf)))
return -EINVAL;
nfc_info(priv->dev, "BootROM reset, start fw download\n");
/* Start FW download state machine */
priv->fw_dnld.state = STATE_INIT;
nci_send_cmd(priv->ndev, NCI_OP_CORE_INIT_CMD, 0, NULL);
return 0;
}
static int process_state_init(struct nfcmrvl_private *priv, struct sk_buff *skb)
{
struct nci_core_set_config_cmd cmd;
if (sizeof(nci_pattern_core_init_rsp) >= skb->len ||
memcmp(skb->data, nci_pattern_core_init_rsp,
sizeof(nci_pattern_core_init_rsp)))
return -EINVAL;
cmd.num_params = 1;
cmd.param.id = NFCMRVL_PROP_REF_CLOCK;
cmd.param.len = 4;
memcpy(cmd.param.val, &priv->fw_dnld.header->ref_clock, 4);
nci_send_cmd(priv->ndev, NCI_OP_CORE_SET_CONFIG_CMD, 3 + cmd.param.len,
&cmd);
priv->fw_dnld.state = STATE_SET_REF_CLOCK;
return 0;
}
static void create_lc(struct nfcmrvl_private *priv)
{
uint8_t param[2] = { NCI_CORE_LC_PROP_FW_DL, 0x0 };
priv->fw_dnld.state = STATE_OPEN_LC;
nci_send_cmd(priv->ndev, NCI_OP_CORE_CONN_CREATE_CMD, 2, param);
}
static int process_state_set_ref_clock(struct nfcmrvl_private *priv,
struct sk_buff *skb)
{
struct nci_core_set_config_cmd cmd;
if (sizeof(nci_pattern_core_set_config_rsp) != skb->len ||
memcmp(skb->data, nci_pattern_core_set_config_rsp, skb->len))
return -EINVAL;
cmd.num_params = 1;
cmd.param.id = NFCMRVL_PROP_SET_HI_CONFIG;
switch (priv->phy) {
case NFCMRVL_PHY_UART:
cmd.param.len = 5;
memcpy(cmd.param.val,
&priv->fw_dnld.binary_config->uart.baudrate,
4);
cmd.param.val[4] =
priv->fw_dnld.binary_config->uart.flow_control;
break;
case NFCMRVL_PHY_I2C:
cmd.param.len = 5;
memcpy(cmd.param.val,
&priv->fw_dnld.binary_config->i2c.clk,
4);
cmd.param.val[4] = 0;
break;
case NFCMRVL_PHY_SPI:
cmd.param.len = 5;
memcpy(cmd.param.val,
&priv->fw_dnld.binary_config->spi.clk,
4);
cmd.param.val[4] = 0;
break;
default:
create_lc(priv);
return 0;
}
priv->fw_dnld.state = STATE_SET_HI_CONFIG;
nci_send_cmd(priv->ndev, NCI_OP_CORE_SET_CONFIG_CMD, 3 + cmd.param.len,
&cmd);
return 0;
}
static int process_state_set_hi_config(struct nfcmrvl_private *priv,
struct sk_buff *skb)
{
if (sizeof(nci_pattern_core_set_config_rsp) != skb->len ||
memcmp(skb->data, nci_pattern_core_set_config_rsp, skb->len))
return -EINVAL;
create_lc(priv);
return 0;
}
static int process_state_open_lc(struct nfcmrvl_private *priv,
struct sk_buff *skb)
{
if (sizeof(nci_pattern_core_conn_create_rsp) >= skb->len ||
memcmp(skb->data, nci_pattern_core_conn_create_rsp,
sizeof(nci_pattern_core_conn_create_rsp)))
return -EINVAL;
priv->fw_dnld.state = STATE_FW_DNLD;
priv->fw_dnld.substate = SUBSTATE_WAIT_COMMAND;
priv->fw_dnld.offset = priv->fw_dnld.binary_config->offset;
return 0;
}
static int process_state_fw_dnld(struct nfcmrvl_private *priv,
struct sk_buff *skb)
{
uint16_t len;
uint16_t comp_len;
struct sk_buff *out_skb;
switch (priv->fw_dnld.substate) {
case SUBSTATE_WAIT_COMMAND:
/*
* Command format:
* B0..2: NCI header
* B3 : Helper command (0xA5)
* B4..5: le16 data size
* B6..7: le16 data size complement (~)
* B8..N: payload
*/
/* Remove NCI HDR */
skb_pull(skb, 3);
if (skb->data[0] != HELPER_CMD_PACKET_FORMAT || skb->len != 5) {
nfc_err(priv->dev, "bad command");
return -EINVAL;
}
skb_pull(skb, 1);
memcpy(&len, skb->data, 2);
skb_pull(skb, 2);
memcpy(&comp_len, skb->data, 2);
skb_pull(skb, 2);
len = get_unaligned_le16(&len);
comp_len = get_unaligned_le16(&comp_len);
if (((~len) & 0xFFFF) != comp_len) {
nfc_err(priv->dev, "bad len complement: %x %x %x",
len, comp_len, (~len & 0xFFFF));
out_skb = alloc_lc_skb(priv, 1);
if (!out_skb)
return -ENOMEM;
*skb_put(out_skb, 1) = 0xBF;
nci_send_frame(priv->ndev, out_skb);
priv->fw_dnld.substate = SUBSTATE_WAIT_NACK_CREDIT;
return 0;
}
priv->fw_dnld.chunk_len = len;
out_skb = alloc_lc_skb(priv, 1);
if (!out_skb)
return -ENOMEM;
*skb_put(out_skb, 1) = HELPER_ACK_PACKET_FORMAT;
nci_send_frame(priv->ndev, out_skb);
priv->fw_dnld.substate = SUBSTATE_WAIT_ACK_CREDIT;
break;
case SUBSTATE_WAIT_ACK_CREDIT:
if (sizeof(nci_pattern_core_conn_credits_ntf) != skb->len ||
memcmp(nci_pattern_core_conn_credits_ntf, skb->data,
skb->len)) {
nfc_err(priv->dev, "bad packet: waiting for credit");
return -EINVAL;
}
if (priv->fw_dnld.chunk_len == 0) {
/* FW Loading is done */
uint8_t conn_id = NCI_CORE_LC_CONNID_PROP_FW_DL;
priv->fw_dnld.state = STATE_CLOSE_LC;
nci_send_cmd(priv->ndev, NCI_OP_CORE_CONN_CLOSE_CMD,
1, &conn_id);
} else {
out_skb = alloc_lc_skb(priv, priv->fw_dnld.chunk_len);
if (!out_skb)
return -ENOMEM;
memcpy(skb_put(out_skb, priv->fw_dnld.chunk_len),
((uint8_t *)priv->fw_dnld.fw->data) +
priv->fw_dnld.offset,
priv->fw_dnld.chunk_len);
nci_send_frame(priv->ndev, out_skb);
priv->fw_dnld.substate = SUBSTATE_WAIT_DATA_CREDIT;
}
break;
case SUBSTATE_WAIT_DATA_CREDIT:
if (sizeof(nci_pattern_core_conn_credits_ntf) != skb->len ||
memcmp(nci_pattern_core_conn_credits_ntf, skb->data,
skb->len)) {
nfc_err(priv->dev, "bad packet: waiting for credit");
return -EINVAL;
}
priv->fw_dnld.offset += priv->fw_dnld.chunk_len;
priv->fw_dnld.chunk_len = 0;
priv->fw_dnld.substate = SUBSTATE_WAIT_COMMAND;
break;
case SUBSTATE_WAIT_NACK_CREDIT:
if (sizeof(nci_pattern_core_conn_credits_ntf) != skb->len ||
memcmp(nci_pattern_core_conn_credits_ntf, skb->data,
skb->len)) {
nfc_err(priv->dev, "bad packet: waiting for credit");
return -EINVAL;
}
priv->fw_dnld.substate = SUBSTATE_WAIT_COMMAND;
break;
}
return 0;
}
static int process_state_close_lc(struct nfcmrvl_private *priv,
struct sk_buff *skb)
{
if (sizeof(nci_pattern_core_conn_close_rsp) != skb->len ||
memcmp(skb->data, nci_pattern_core_conn_close_rsp, skb->len))
return -EINVAL;
priv->fw_dnld.state = STATE_BOOT;
nci_send_cmd(priv->ndev, NCI_OP_PROPRIETARY_BOOT_CMD, 0, NULL);
return 0;
}
static int process_state_boot(struct nfcmrvl_private *priv, struct sk_buff *skb)
{
if (sizeof(nci_pattern_proprietary_boot_rsp) != skb->len ||
memcmp(skb->data, nci_pattern_proprietary_boot_rsp, skb->len))
return -EINVAL;
/*
* Update HI config to use the right configuration for the next
* data exchanges.
*/
priv->if_ops->nci_update_config(priv,
&priv->fw_dnld.binary_config->config);
if (priv->fw_dnld.binary_config == &priv->fw_dnld.header->helper) {
/*
* This is the case where an helper was needed and we have
* uploaded it. Now we have to wait the next RESET NTF to start
* FW download.
*/
priv->fw_dnld.state = STATE_RESET;
priv->fw_dnld.binary_config = &priv->fw_dnld.header->firmware;
nfc_info(priv->dev, "FW loading: helper loaded");
} else {
nfc_info(priv->dev, "FW loading: firmware loaded");
fw_dnld_over(priv, 0);
}
return 0;
}
static void fw_dnld_rx_work(struct work_struct *work)
{
int ret;
struct sk_buff *skb;
struct nfcmrvl_fw_dnld *fw_dnld = container_of(work,
struct nfcmrvl_fw_dnld,
rx_work);
struct nfcmrvl_private *priv = container_of(fw_dnld,
struct nfcmrvl_private,
fw_dnld);
while ((skb = skb_dequeue(&fw_dnld->rx_q))) {
nfc_send_to_raw_sock(priv->ndev->nfc_dev, skb,
RAW_PAYLOAD_NCI, NFC_DIRECTION_RX);
switch (fw_dnld->state) {
case STATE_RESET:
ret = process_state_reset(priv, skb);
break;
case STATE_INIT:
ret = process_state_init(priv, skb);
break;
case STATE_SET_REF_CLOCK:
ret = process_state_set_ref_clock(priv, skb);
break;
case STATE_SET_HI_CONFIG:
ret = process_state_set_hi_config(priv, skb);
break;
case STATE_OPEN_LC:
ret = process_state_open_lc(priv, skb);
break;
case STATE_FW_DNLD:
ret = process_state_fw_dnld(priv, skb);
break;
case STATE_CLOSE_LC:
ret = process_state_close_lc(priv, skb);
break;
case STATE_BOOT:
ret = process_state_boot(priv, skb);
break;
default:
ret = -EFAULT;
}
kfree_skb(skb);
if (ret != 0) {
nfc_err(priv->dev, "FW loading error");
fw_dnld_over(priv, ret);
break;
}
}
}
int nfcmrvl_fw_dnld_init(struct nfcmrvl_private *priv)
{
char name[32];
INIT_WORK(&priv->fw_dnld.rx_work, fw_dnld_rx_work);
snprintf(name, sizeof(name), "%s_nfcmrvl_fw_dnld_rx_wq",
dev_name(priv->dev));
priv->fw_dnld.rx_wq = create_singlethread_workqueue(name);
if (!priv->fw_dnld.rx_wq)
return -ENOMEM;
skb_queue_head_init(&priv->fw_dnld.rx_q);
return 0;
}
void nfcmrvl_fw_dnld_deinit(struct nfcmrvl_private *priv)
{
destroy_workqueue(priv->fw_dnld.rx_wq);
}
void nfcmrvl_fw_dnld_recv_frame(struct nfcmrvl_private *priv,
struct sk_buff *skb)
{
/* Allow next command */
atomic_set(&priv->ndev->cmd_cnt, 1);
del_timer_sync(&priv->ndev->cmd_timer);
/* Queue and trigger rx work */
skb_queue_tail(&priv->fw_dnld.rx_q, skb);
queue_work(priv->fw_dnld.rx_wq, &priv->fw_dnld.rx_work);
}
void nfcmrvl_fw_dnld_abort(struct nfcmrvl_private *priv)
{
fw_dnld_over(priv, -EHOSTDOWN);
}
int nfcmrvl_fw_dnld_start(struct nci_dev *ndev, const char *firmware_name)
{
struct nfcmrvl_private *priv = nci_get_drvdata(ndev);
struct nfcmrvl_fw_dnld *fw_dnld = &priv->fw_dnld;
if (!priv->support_fw_dnld)
return -ENOTSUPP;
if (!firmware_name || !firmware_name[0])
return -EINVAL;
strcpy(fw_dnld->name, firmware_name);
/*
* Retrieve FW binary file and parse it to initialize FW download
* state machine.
*/
/* Retrieve FW binary */
if (request_firmware(&fw_dnld->fw, firmware_name, priv->dev) < 0) {
nfc_err(priv->dev, "failed to retrieve FW %s", firmware_name);
return -ENOENT;
}
fw_dnld->header = (const struct nfcmrvl_fw *) priv->fw_dnld.fw->data;
if (fw_dnld->header->magic != NFCMRVL_FW_MAGIC ||
fw_dnld->header->phy != priv->phy) {
nfc_err(priv->dev, "bad firmware binary %s magic=0x%x phy=%d",
firmware_name, fw_dnld->header->magic,
fw_dnld->header->phy);
release_firmware(fw_dnld->fw);
fw_dnld->header = NULL;
return -EINVAL;
}
if (fw_dnld->header->helper.offset != 0) {
nfc_info(priv->dev, "loading helper");
fw_dnld->binary_config = &fw_dnld->header->helper;
} else {
nfc_info(priv->dev, "loading firmware");
fw_dnld->binary_config = &fw_dnld->header->firmware;
}
/* Configure a timer for timeout */
setup_timer(&priv->fw_dnld.timer, fw_dnld_timeout,
(unsigned long) priv);
mod_timer(&priv->fw_dnld.timer,
jiffies + msecs_to_jiffies(FW_DNLD_TIMEOUT));
/* Ronfigure HI to be sure that it is the bootrom values */
priv->if_ops->nci_update_config(priv,
&fw_dnld->header->bootrom.config);
/* Allow first command */
atomic_set(&priv->ndev->cmd_cnt, 1);
/* First, reset the chip */
priv->fw_dnld.state = STATE_RESET;
nfcmrvl_chip_reset(priv);
/* Now wait for CORE_RESET_NTF or timeout */
return 0;
}

98
drivers/nfc/nfcmrvl/fw_dnld.h Normal file
View File

@ -0,0 +1,98 @@
/**
* Marvell NFC driver: Firmware downloader
*
* Copyright (C) 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
* (the "License"). You may use, redistribute and/or modify this File in
* accordance with the terms and conditions of the License, a copy of which
* is available on the worldwide web at
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
* this warranty disclaimer.
**/
#ifndef __NFCMRVL_FW_DNLD_H__
#define __NFCMRVL_FW_DNLD_H__
#include <linux/workqueue.h>
#define NFCMRVL_FW_MAGIC 0x88888888
#define NCI_OP_PROP_BOOT_CMD 0x3A
#define NCI_CORE_LC_PROP_FW_DL 0xFD
#define NCI_CORE_LC_CONNID_PROP_FW_DL 0x02
#define HELPER_CMD_ENTRY_POINT 0x04
#define HELPER_CMD_PACKET_FORMAT 0xA5
#define HELPER_ACK_PACKET_FORMAT 0x5A
#define HELPER_RETRY_REQUESTED (1 << 15)
struct nfcmrvl_private;
struct nfcmrvl_fw_uart_config {
uint8_t flow_control;
uint32_t baudrate;
} __packed;
struct nfcmrvl_fw_i2c_config {
uint32_t clk;
} __packed;
struct nfcmrvl_fw_spi_config {
uint32_t clk;
} __packed;
struct nfcmrvl_fw_binary_config {
uint32_t offset;
union {
void *config;
struct nfcmrvl_fw_uart_config uart;
struct nfcmrvl_fw_i2c_config i2c;
struct nfcmrvl_fw_spi_config spi;
uint8_t reserved[64];
};
} __packed;
struct nfcmrvl_fw {
uint32_t magic;
uint32_t ref_clock;
uint32_t phy;
struct nfcmrvl_fw_binary_config bootrom;
struct nfcmrvl_fw_binary_config helper;
struct nfcmrvl_fw_binary_config firmware;
uint8_t reserved[64];
} __packed;
struct nfcmrvl_fw_dnld {
char name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
const struct firmware *fw;
const struct nfcmrvl_fw *header;
const struct nfcmrvl_fw_binary_config *binary_config;
int state;
int substate;
int offset;
int chunk_len;
struct workqueue_struct *rx_wq;
struct work_struct rx_work;
struct sk_buff_head rx_q;
struct timer_list timer;
};
int nfcmrvl_fw_dnld_init(struct nfcmrvl_private *priv);
void nfcmrvl_fw_dnld_deinit(struct nfcmrvl_private *priv);
void nfcmrvl_fw_dnld_abort(struct nfcmrvl_private *priv);
int nfcmrvl_fw_dnld_start(struct nci_dev *ndev, const char *firmware_name);
void nfcmrvl_fw_dnld_recv_frame(struct nfcmrvl_private *priv,
struct sk_buff *skb);
#endif

42
drivers/nfc/nfcmrvl/main.c
View File

@ -61,9 +61,6 @@ 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;
@ -86,11 +83,18 @@ 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,
@ -143,18 +147,26 @@ 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);
@ -165,6 +177,11 @@ 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);
@ -185,6 +202,11 @@ 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 {
@ -213,6 +235,12 @@ 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,

19
drivers/nfc/nfcmrvl/nfcmrvl.h
View File

@ -1,7 +1,7 @@
/**
* Marvell NFC driver
*
* 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
@ -21,6 +21,8 @@
#include <linux/platform_data/nfcmrvl.h>
#include "fw_dnld.h"
/* Define private flags: */
#define NFCMRVL_NCI_RUNNING 1
@ -37,6 +39,8 @@
*/
#define NFCMRVL_PB_BAIL_OUT 0x11
#define NFCMRVL_PROP_REF_CLOCK 0xF0
#define NFCMRVL_PROP_SET_HI_CONFIG 0xF1
/*
** HCI defines
@ -52,9 +56,10 @@
enum nfcmrvl_phy {
NFCMRVL_PHY_USB = 0,
NFCMRVL_PHY_UART = 1,
NFCMRVL_PHY_I2C = 2,
NFCMRVL_PHY_SPI = 3,
};
struct nfcmrvl_private {
unsigned long flags;
@ -62,8 +67,15 @@ struct nfcmrvl_private {
/* Platform configuration */
struct nfcmrvl_platform_data config;
/* Parent dev */
struct nci_dev *ndev;
/* FW download context */
struct nfcmrvl_fw_dnld fw_dnld;
/* FW download support */
bool support_fw_dnld;
/*
** PHY related information
*/
@ -82,6 +94,8 @@ struct nfcmrvl_if_ops {
int (*nci_open) (struct nfcmrvl_private *priv);
int (*nci_close) (struct nfcmrvl_private *priv);
int (*nci_send) (struct nfcmrvl_private *priv, struct sk_buff *skb);
void (*nci_update_config)(struct nfcmrvl_private *priv,
const void *param);
};
void nfcmrvl_nci_unregister_dev(struct nfcmrvl_private *priv);
@ -93,6 +107,7 @@ struct nfcmrvl_private *nfcmrvl_nci_register_dev(void *drv_data,
void nfcmrvl_chip_reset(struct nfcmrvl_private *priv);
void nfcmrvl_chip_halt(struct nfcmrvl_private *priv);
int nfcmrvl_parse_dt(struct device_node *node,
struct nfcmrvl_platform_data *pdata);

12
drivers/nfc/nfcmrvl/uart.c
View File

@ -50,10 +50,21 @@ static int nfcmrvl_uart_nci_send(struct nfcmrvl_private *priv,
return nu->ops.send(nu, skb);
}
static void nfcmrvl_uart_nci_update_config(struct nfcmrvl_private *priv,
const void *param)
{
struct nci_uart *nu = priv->drv_data;
const struct nfcmrvl_fw_uart_config *config = param;
nci_uart_set_config(nu, le32_to_cpu(config->baudrate),
config->flow_control);
}
static struct nfcmrvl_if_ops uart_ops = {
.nci_open = nfcmrvl_uart_nci_open,
.nci_close = nfcmrvl_uart_nci_close,
.nci_send = nfcmrvl_uart_nci_send,
.nci_update_config = nfcmrvl_uart_nci_update_config
};
#ifdef CONFIG_OF
@ -132,6 +143,7 @@ static int nfcmrvl_nci_uart_open(struct nci_uart *nu)
return PTR_ERR(priv);
priv->phy = NFCMRVL_PHY_UART;
priv->support_fw_dnld = true;
nu->drv_data = priv;
nu->ndev = priv->ndev;

2
drivers/nfc/nfcmrvl/usb.c
View File

@ -347,6 +347,8 @@ static int nfcmrvl_probe(struct usb_interface *intf,
drv_data->priv = priv;
drv_data->priv->phy = NFCMRVL_PHY_USB;
drv_data->priv->support_fw_dnld = false;
priv->dev = &drv_data->udev->dev;
usb_set_intfdata(intf, drv_data);