diff options
Diffstat (limited to 'drivers/misc/ti-st/fmdrv_chr.h')
| -rw-r--r-- | drivers/misc/ti-st/fmdrv_chr.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/drivers/misc/ti-st/fmdrv_chr.h b/drivers/misc/ti-st/fmdrv_chr.h new file mode 100644 index 000000000000..9b8cc5a45c57 --- /dev/null +++ b/drivers/misc/ti-st/fmdrv_chr.h @@ -0,0 +1,194 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * + * Copyright (C) 2009 Texas Instruments + * Written by Raghavendra Shenoy (x0099675@ti.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _FM_CHR_DRV_H +#define _FM_CHR_DRV_H + +/* #define VERBOSE */ + +/* Debug macros */ +#define FM_CHR_DRV_ERR(fmt, arg...) \ + pr_err("(fm_chr_drv):"fmt"\n" , ## arg) + +#if defined(DEBUG) /* limited debug messages */ +#define FM_CHR_DRV_DBG(fmt, arg...) \ + pr_info("(fm_chr_drv):"fmt"\n" , ## arg) +#define FM_CHR_DRV_VER(fmt, arg...) +#define FM_CHR_DRV_START() \ + pr_info("(fm_chr_drv): Inside %s\n", __func__) +#elif defined(VERBOSE) /* very verbose */ +#define FM_CHR_DRV_DBG(fmt, arg...) \ + pr_info("(fm_chr_drv):"fmt"\n" , ## arg) +#define FM_CHR_DRV_VER(fmt, arg...) \ + pr_info("(fm_chr_drv):"fmt"\n" , ## arg) +#define FM_CHR_DRV_START() \ + pr_info("(fm_chr_drv): Inside %s\n", __func__) +#else /* Error msgs only */ +#define FM_CHR_DRV_DBG(fmt, arg...) +#define FM_CHR_DRV_VER(fmt, arg...) +#define FM_CHR_DRV_START() +#endif + +/* FM device */ +#define FM_CHAR_DEVICE_NAME "tifm" + +/* Macros for packet conversion */ +#define CHAN1_FM_PWR_OPCODE 0xFD37 +#define CHAN1_READ_OPCODE 0xFD33 +#define CHAN1_WRITE_OPCODE 0xFD35 + +#define CHAN1_HW_REG_OPCODE 0x64 +#define CHAN8_FM_PWR_OPCODE 0xFE +#define CHAN8_FM_INTERRUPT 0xFF +#define CHAN8_FM_INTERRUPT_OPCODE 0xF0 + +/* Packet types */ +#define CHAN1_PKT_TYPE 0x01 +#define CHAN8_PKT_TYPE 0x08 +#define CHAN4_PKT_TYPE 0x04 +#define CHAN4_CMD_COMPLETE_TYPE 0x0E + +#define CHAN8_RD_CMD 0x01 +#define CHAN8_WR_CMD 0x00 + +#define CHAN8_RD_RESP 0x01 +#define CHAN8_WR_RESP 0x00 + +/* Channel-4 data sizes */ +#define CHAN4_PKT_TYPE_SIZE 1 +#define CHAN4_EVT_TYPE_SIZE 1 + +/* Channel-8 data sizes */ +#define CHAN8_OPCODE_SIZE 1 +#define CHAN8_RD_WR_SIZE 1 +#define CHAN8_PARAM_LEN_SIZE 1 + +/* Channel-8 response data sizes */ +#define CHAN8_RESP_TYPE_SIZE 1 +#define CHAN8_RESP_CMD_LEN_SIZE 1 + +/* HCI-VS data sizes */ +#define CHAN1_TYPE_SIZE 1 +#define CHAN1_OPCODE_SIZE 2 +#define CHAN1_CMD_LEN_SIZE 1 + +/* HCI-VS data positions */ +#define CHAN1_TYPE_POS 0 +#define CHAN1_OPCODE_POS 1 +#define CHAN1_CMD_LEN_POS 3 +#define CHAN1_FM_OPCODE_POS 4 +#define CHAN1_PARAM_LEN_POS 5 + +/* Because of an extra Zero appended to param_len */ +#define CHAN1_PARAM_POS 7 + +/* Channel-8 command positions */ +#define CHAN8_TYPE_POS 0 +#define CHAN8_CMD_LEN_POS 1 +#define CHAN8_FM_OPCODE_POS 2 +#define CHAN8_RW_POS 3 +#define CHAN8_PARAM_LEN_POS 4 +#define CHAN8_PARAM_POS 5 + +/* Channel-8 response positions */ +#define CHAN8_RESP_CMD_LEN_POS 1 +#define CHAN8_RESP_STATUS_POS 2 +#define CHAN8_RESP_NUM_HCI_POS 3 +#define CHAN8_RESP_FM_OPCODE_POS 4 +#define CHAN8_RESP_RW_POS 5 +#define CHAN8_RESP_PARAM_LEN_POS 6 +#define CHAN8_RESP_PARAM_POS 7 + +/* Channel-4 data positions */ +#define CHAN4_TYPE_POS 0 +#define CHAN4_EVT_TYPE_POS 1 +#define CHAN4_PLEN_POS 2 +#define CHAN4_EVT_POS 3 +#define CHAN4_PARAM_POS 6 + +/* Forward declaration file operations */ +void fm_chr_exit(void); +int fm_chr_init(void); + +int fm_chr_fasync(int, struct file *, int); + +int fm_chr_open(struct inode *, struct file *); +int fm_chr_release(struct inode *, struct file *); + +ssize_t fm_chr_write(struct file *, const char __user *, size_t, loff_t *); +ssize_t fm_chr_read(struct file *, char __user *, size_t, loff_t *); +unsigned int fm_chr_poll(struct file *, poll_table *); + +int fm_chr_ioctl(struct inode *, struct file *, unsigned int, unsigned long); + +long fm_rx_task(void); + +/* List of error codes returned by the FM driver */ +enum { + FM_CHR_DRV_ERR_FAILURE = -1, /* check struct */ + FM_CHR_DRV_SUCCESS, + FM_CHR_DRV_ERR_PENDING = -5, /* to call reg_complete_cb */ + FM_CHR_DRV_ERR_ALREADY, /* already registered */ + FM_CHR_DRV_ERR_INPROGRESS, + FM_CHR_DRV_ERR_NOPROTO, /* protocol not supported */ + FM_CHR_DRV_ERR_CLASS = -15, + FM_CHR_DRV_READ_TIMEOUT, +}; + +/* Header structure for HCI command packet */ +struct hci_command_hdr { + uint8_t prefix; + uint16_t opcode; + uint8_t plen; +} __attribute__ ((packed)); + +/* Header structure for HCI event packet */ +struct evt_cmd_complete { + uint8_t ncmd; + uint16_t opcode; +} __attribute__ ((packed)); + +/* Flag to send the signal after the command complete + * event's skb is removed from the RX queue + */ +#define SIGNAL_PENDING 1 + +/* FM Character driver data */ +struct fm_chrdrv_ops { + int fm_chr_major; + struct device *fm_chr_dev; + struct class *fm_chr_class; + + spinlock_t lock; + + unsigned long state_flags; + + struct sk_buff_head rx_q; + struct tasklet_struct rx_task; + + wait_queue_head_t fm_data_q; + struct completion reg_completed; + + struct fasync_struct *fm_fasync; + + long (*st_write) (struct sk_buff *); +}; + +#endif /*_FM_CHR_DRV_H */ |