Messages in this thread Patch in this message | | | Subject | [PATCH] Clean up magic numbers in i2c_parport.h | Date | Thu, 23 Mar 2006 00:12:31 -0800 (PST) | From | (Christopher Hoover) |
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This small patch gets rid of some magic numbers in the i2c parport drivers, specifically wrt the control and status handling, using the symbols already defined in parport.h
The patch produces the same binary objects for i2c-parport.c and i2c-parport-simple.c as before.
Please apply.
Cheers, Christopher.
ch@murgatroid.com ch@hpl.hp.com
Only in linux-2.6.16: .config diff --exclude=scripts --exclude='*~' -aurp linux-2.6.16/drivers/i2c/busses/i2c-parport.h linux-2.6.16.i2c/drivers/i2c/busses/i2c-parport.h --- linux-2.6.16/drivers/i2c/busses/i2c-parport.h 2006-03-19 21:53:29.000000000 -0800 +++ linux-2.6.16.i2c/drivers/i2c/busses/i2c-parport.h 2006-03-22 23:51:08.000000000 -0800 @@ -18,6 +18,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ------------------------------------------------------------------------ */ +#include <linux/parport.h> + #ifdef DATA #undef DATA #endif @@ -40,53 +42,62 @@ struct adapter_parm { struct lineop init; }; +#define LINEOP_DATA(val_, inverted_) \ + { .val=(val_), .port = DATA, .inverted=(inverted_) } + +#define LINEOP_STATUS(val_, inverted_) \ + { .val=(val_), .port = STAT, .inverted=(inverted_) } + +#define LINEOP_CONTROL(val_, inverted_) \ + { .val=(val_), .port = CTRL, .inverted=(inverted_) } + static struct adapter_parm adapter_parm[] = { /* type 0: Philips adapter */ { - .setsda = { 0x80, DATA, 1 }, - .setscl = { 0x08, CTRL, 0 }, - .getsda = { 0x80, STAT, 0 }, - .getscl = { 0x08, STAT, 0 }, + .setsda = LINEOP_DATA(0x80, 1), + .setscl = LINEOP_CONTROL(PARPORT_CONTROL_SELECT, 0), + .getsda = LINEOP_STATUS(PARPORT_STATUS_BUSY, 0), + .getscl = LINEOP_STATUS(PARPORT_STATUS_ERROR, 0) }, /* type 1: home brew teletext adapter */ { - .setsda = { 0x02, DATA, 0 }, - .setscl = { 0x01, DATA, 0 }, - .getsda = { 0x80, STAT, 1 }, + .setsda = LINEOP_DATA(0x02, 0), + .setscl = LINEOP_DATA(0x01, 0), + .getsda = LINEOP_STATUS(PARPORT_STATUS_BUSY, 1) }, /* type 2: Velleman K8000 adapter */ { - .setsda = { 0x02, CTRL, 1 }, - .setscl = { 0x08, CTRL, 1 }, - .getsda = { 0x10, STAT, 0 }, + .setsda = LINEOP_CONTROL(PARPORT_CONTROL_AUTOFD, 1), + .setscl = LINEOP_CONTROL(PARPORT_CONTROL_SELECT, 1), + .getsda = LINEOP_STATUS(PARPORT_STATUS_SELECT, 0) }, /* type 3: ELV adapter */ { - .setsda = { 0x02, DATA, 1 }, - .setscl = { 0x01, DATA, 1 }, - .getsda = { 0x40, STAT, 1 }, - .getscl = { 0x08, STAT, 1 }, + .setsda = LINEOP_DATA(0x02, 1), + .setscl = LINEOP_DATA(0x01, 1), + .getsda = LINEOP_STATUS(PARPORT_STATUS_ACK, 1), + .getscl = LINEOP_STATUS(PARPORT_STATUS_ERROR, 1) }, /* type 4: ADM1032 evaluation board */ { - .setsda = { 0x02, DATA, 1 }, - .setscl = { 0x01, DATA, 1 }, - .getsda = { 0x10, STAT, 1 }, - .init = { 0xf0, DATA, 0 }, + .setsda = LINEOP_DATA(0x02, 1), + .setscl = LINEOP_DATA(0x01, 1), + .getsda = LINEOP_STATUS(PARPORT_STATUS_SELECT, 1), + .init = LINEOP_DATA(0xf0,0) }, /* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */ { - .setsda = { 0x02, DATA, 1 }, - .setscl = { 0x01, DATA, 1 }, - .getsda = { 0x10, STAT, 1 }, + .setsda = LINEOP_DATA(0x02, 1), + .setscl = LINEOP_DATA(0x01, 1), + .getsda = LINEOP_STATUS(PARPORT_STATUS_SELECT, 1) }, /* type 6: Barco LPT->DVI (K5800236) adapter */ { - .setsda = { 0x02, DATA, 1 }, - .setscl = { 0x01, DATA, 1 }, - .getsda = { 0x20, STAT, 0 }, - .getscl = { 0x40, STAT, 0 }, - .init = { 0xfc, DATA, 0 }, + .setsda = LINEOP_DATA(0x02, 1), + .setscl = LINEOP_DATA(0x01, 1), + .getsda = LINEOP_STATUS(PARPORT_STATUS_PAPEROUT, 0), + .getscl = LINEOP_STATUS(PARPORT_STATUS_ACK, 0), + .init = LINEOP_DATA(0xfc, 0) }, }; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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