diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-parport.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-parport.c | 113 |
1 files changed, 105 insertions, 8 deletions
diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c index e8ed882de402..81eb441b2387 100644 --- a/drivers/i2c/busses/i2c-parport.c +++ b/drivers/i2c/busses/i2c-parport.c @@ -25,7 +25,90 @@ #include <linux/slab.h> #include <linux/list.h> #include <linux/mutex.h> -#include "i2c-parport.h" + +#define PORT_DATA 0 +#define PORT_STAT 1 +#define PORT_CTRL 2 + +struct lineop { + u8 val; + u8 port; + u8 inverted; +}; + +struct adapter_parm { + struct lineop setsda; + struct lineop setscl; + struct lineop getsda; + struct lineop getscl; + struct lineop init; + unsigned int smbus_alert:1; +}; + +static const struct adapter_parm adapter_parm[] = { + /* type 0: Philips adapter */ + { + .setsda = { 0x80, PORT_DATA, 1 }, + .setscl = { 0x08, PORT_CTRL, 0 }, + .getsda = { 0x80, PORT_STAT, 0 }, + .getscl = { 0x08, PORT_STAT, 0 }, + }, + /* type 1: home brew teletext adapter */ + { + .setsda = { 0x02, PORT_DATA, 0 }, + .setscl = { 0x01, PORT_DATA, 0 }, + .getsda = { 0x80, PORT_STAT, 1 }, + }, + /* type 2: Velleman K8000 adapter */ + { + .setsda = { 0x02, PORT_CTRL, 1 }, + .setscl = { 0x08, PORT_CTRL, 1 }, + .getsda = { 0x10, PORT_STAT, 0 }, + }, + /* type 3: ELV adapter */ + { + .setsda = { 0x02, PORT_DATA, 1 }, + .setscl = { 0x01, PORT_DATA, 1 }, + .getsda = { 0x40, PORT_STAT, 1 }, + .getscl = { 0x08, PORT_STAT, 1 }, + }, + /* type 4: ADM1032 evaluation board */ + { + .setsda = { 0x02, PORT_DATA, 1 }, + .setscl = { 0x01, PORT_DATA, 1 }, + .getsda = { 0x10, PORT_STAT, 1 }, + .init = { 0xf0, PORT_DATA, 0 }, + .smbus_alert = 1, + }, + /* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */ + { + .setsda = { 0x02, PORT_DATA, 1 }, + .setscl = { 0x01, PORT_DATA, 1 }, + .getsda = { 0x10, PORT_STAT, 1 }, + }, + /* type 6: Barco LPT->DVI (K5800236) adapter */ + { + .setsda = { 0x02, PORT_DATA, 1 }, + .setscl = { 0x01, PORT_DATA, 1 }, + .getsda = { 0x20, PORT_STAT, 0 }, + .getscl = { 0x40, PORT_STAT, 0 }, + .init = { 0xfc, PORT_DATA, 0 }, + }, + /* type 7: One For All JP1 parallel port adapter */ + { + .setsda = { 0x01, PORT_DATA, 0 }, + .setscl = { 0x02, PORT_DATA, 0 }, + .getsda = { 0x80, PORT_STAT, 1 }, + .init = { 0x04, PORT_DATA, 1 }, + }, + /* type 8: VCT-jig */ + { + .setsda = { 0x04, PORT_DATA, 1 }, + .setscl = { 0x01, PORT_DATA, 1 }, + .getsda = { 0x40, PORT_STAT, 0 }, + .getscl = { 0x80, PORT_STAT, 1 }, + }, +}; /* ----- Device list ------------------------------------------------------ */ @@ -40,9 +123,30 @@ struct i2c_par { static LIST_HEAD(adapter_list); static DEFINE_MUTEX(adapter_list_lock); + #define MAX_DEVICE 4 static int parport[MAX_DEVICE] = {0, -1, -1, -1}; +module_param_array(parport, int, NULL, 0); +MODULE_PARM_DESC(parport, + "List of parallel ports to bind to, by index.\n" + " At most " __stringify(MAX_DEVICE) " devices are supported.\n" + " Default is one device connected to parport0.\n" +); +static int type = -1; +module_param(type, int, 0); +MODULE_PARM_DESC(type, + "Type of adapter:\n" + " 0 = Philips adapter\n" + " 1 = home brew teletext adapter\n" + " 2 = Velleman K8000 adapter\n" + " 3 = ELV adapter\n" + " 4 = ADM1032 evaluation board\n" + " 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n" + " 6 = Barco LPT->DVI (K5800236) adapter\n" + " 7 = One For All JP1 parallel port adapter\n" + " 8 = VCT-jig\n" +); /* ----- Low-level parallel port access ----------------------------------- */ @@ -311,12 +415,5 @@ MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>"); MODULE_DESCRIPTION("I2C bus over parallel port"); MODULE_LICENSE("GPL"); -module_param_array(parport, int, NULL, 0); -MODULE_PARM_DESC(parport, - "List of parallel ports to bind to, by index.\n" - " Atmost " __stringify(MAX_DEVICE) " devices are supported.\n" - " Default is one device connected to parport0.\n" -); - module_init(i2c_parport_init); module_exit(i2c_parport_exit); |