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drivers:misc: ti-st: move from rfkill to sysfs

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The communication between ST KIM and UIM was interfaced
over the /dev/rfkill device node.
Move the interface to a simpler less abusive sysfs entry
mechanism and document it in Documentation/ABI/testing/
under sysfs-platform-kim.

Shared transport driver would now read the UART details
originally received by bootloader or firmware as platform
data.
The data read will be shared over sysfs entries for the user-space
UIM or other n/w manager/plugins to be read, and assist the driver
by opening up the UART, setting the baud-rate and installing the
line discipline.

Signed-off-by: Pavan Savoy <pavan_savoy@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Pavan Savoy 2011-02-04 02:23:10 -06:00 • committed by Greg Kroah-Hartman
parent 5c88b02196
commit ec60d0ad20
3 changed files with 187 additions and 126 deletions
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19
include/linux/ti_wilink_st.h
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@ -206,8 +206,8 @@ void gps_chrdrv_stub_init(void);
/* time in msec to wait for
* line discipline to be installed
*/
#define LDISC_TIME 500
#define CMD_RESP_TIME 500
#define LDISC_TIME 1000
#define CMD_RESP_TIME 800
#define MAKEWORD(a, b) ((unsigned short)(((unsigned char)(a)) \
| ((unsigned short)((unsigned char)(b))) << 8))
@ -230,6 +230,7 @@ struct chip_version {
unsigned short maj_ver;
};
#define UART_DEV_NAME_LEN 32
/**
* struct kim_data_s - the KIM internal data, embedded as the
* platform's drv data. One for each ST device in the system.
@ -271,6 +272,10 @@ struct kim_data_s {
enum proto_type rf_protos[ST_MAX_CHANNELS];
struct st_data_s *core_data;
struct chip_version version;
unsigned char ldisc_install;
unsigned char dev_name[UART_DEV_NAME_LEN];
unsigned char flow_cntrl;
unsigned long baud_rate;
};
/**
@ -413,4 +418,14 @@ struct gps_event_hdr {
u16 plen;
} __attribute__ ((packed));
/* platform data */
struct ti_st_plat_data {
long gpios[ST_MAX_CHANNELS]; /* BT, FM and GPS */
unsigned char dev_name[UART_DEV_NAME_LEN]; /* uart name */
unsigned char flow_cntrl; /* flow control flag */
unsigned long baud_rate;
int (*suspend)(struct platform_device *, pm_message_t);
int (*resume)(struct platform_device *);
};
#endif /* TI_WILINK_ST_H */