From 2ffe88f67fbef05b337ba53ae05c0b37a9a376bf Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Fri, 20 Jun 2014 13:28:49 -0700 Subject: [PATCH] staging: comedi: s626: define S626_LP_CNTR* registers based on channel number Redefining the Counter Preload/Latch registers as a macro that calculates the register offset based on the comedi channel number. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/s626.c | 12 ++++++------ drivers/staging/comedi/drivers/s626.h | 16 +++------------- 2 files changed, 9 insertions(+), 19 deletions(-) diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c index 68f677a..bbf8e26 100644 --- a/drivers/staging/comedi/drivers/s626.c +++ b/drivers/staging/comedi/drivers/s626.c @@ -1334,7 +1334,7 @@ static const struct s626_enc_info s626_enc_chan_info[] = { .set_load_trig = s626_set_load_trig_a, .set_mode = s626_set_mode_a, .reset_cap_flags = s626_reset_cap_flags_a, - .my_latch_lsw = S626_LP_CNTR0ALSW, + .my_latch_lsw = S626_LP_CNTR(0), .my_event_bits = S626_EVBITS(0), }, { .chan = 1, @@ -1348,7 +1348,7 @@ static const struct s626_enc_info s626_enc_chan_info[] = { .set_load_trig = s626_set_load_trig_a, .set_mode = s626_set_mode_a, .reset_cap_flags = s626_reset_cap_flags_a, - .my_latch_lsw = S626_LP_CNTR1ALSW, + .my_latch_lsw = S626_LP_CNTR(1), .my_event_bits = S626_EVBITS(1), }, { .chan = 2, @@ -1362,7 +1362,7 @@ static const struct s626_enc_info s626_enc_chan_info[] = { .set_load_trig = s626_set_load_trig_a, .set_mode = s626_set_mode_a, .reset_cap_flags = s626_reset_cap_flags_a, - .my_latch_lsw = S626_LP_CNTR2ALSW, + .my_latch_lsw = S626_LP_CNTR(2), .my_event_bits = S626_EVBITS(2), }, { .chan = 3, @@ -1376,7 +1376,7 @@ static const struct s626_enc_info s626_enc_chan_info[] = { .set_load_trig = s626_set_load_trig_b, .set_mode = s626_set_mode_b, .reset_cap_flags = s626_reset_cap_flags_b, - .my_latch_lsw = S626_LP_CNTR0BLSW, + .my_latch_lsw = S626_LP_CNTR(3), .my_event_bits = S626_EVBITS(3), }, { .chan = 4, @@ -1390,7 +1390,7 @@ static const struct s626_enc_info s626_enc_chan_info[] = { .set_load_trig = s626_set_load_trig_b, .set_mode = s626_set_mode_b, .reset_cap_flags = s626_reset_cap_flags_b, - .my_latch_lsw = S626_LP_CNTR1BLSW, + .my_latch_lsw = S626_LP_CNTR(4), .my_event_bits = S626_EVBITS(4), }, { .chan = 5, @@ -1404,7 +1404,7 @@ static const struct s626_enc_info s626_enc_chan_info[] = { .set_load_trig = s626_set_load_trig_b, .set_mode = s626_set_mode_b, .reset_cap_flags = s626_reset_cap_flags_b, - .my_latch_lsw = S626_LP_CNTR2BLSW, + .my_latch_lsw = S626_LP_CNTR(5), .my_event_bits = S626_EVBITS(5), }, }; diff --git a/drivers/staging/comedi/drivers/s626.h b/drivers/staging/comedi/drivers/s626.h index 70557a0..b83424e 100644 --- a/drivers/staging/comedi/drivers/s626.h +++ b/drivers/staging/comedi/drivers/s626.h @@ -233,19 +233,9 @@ #define S626_LP_CRA(x) (0x0000 + (((x) % 3) * 0x4)) #define S626_LP_CRB(x) (0x0002 + (((x) % 3) * 0x4)) -/* Counter PreLoad (write) and Latch (read) Registers: */ -#define S626_LP_CNTR0ALSW 0x000C /* 0A lsw. */ -#define S626_LP_CNTR0AMSW 0x000E /* 0A msw. */ -#define S626_LP_CNTR0BLSW 0x0010 /* 0B lsw. */ -#define S626_LP_CNTR0BMSW 0x0012 /* 0B msw. */ -#define S626_LP_CNTR1ALSW 0x0014 /* 1A lsw. */ -#define S626_LP_CNTR1AMSW 0x0016 /* 1A msw. */ -#define S626_LP_CNTR1BLSW 0x0018 /* 1B lsw. */ -#define S626_LP_CNTR1BMSW 0x001A /* 1B msw. */ -#define S626_LP_CNTR2ALSW 0x001C /* 2A lsw. */ -#define S626_LP_CNTR2AMSW 0x001E /* 2A msw. */ -#define S626_LP_CNTR2BLSW 0x0020 /* 2B lsw. */ -#define S626_LP_CNTR2BMSW 0x0022 /* 2B msw. */ +/* Counter PreLoad (write) and Latch (read) Registers: 0A 1A 2A 0B 1B 2B */ +#define S626_LP_CNTR(x) (0x000c + (((x) < 3) ? 0x0 : 0x4) + \ + (((x) % 3) * 0x8)) /* Miscellaneous Registers (read/write): */ #define S626_LP_MISC1 0x0088 /* Read/write Misc1. */ -- 2.7.4