From b35d6a38be9a5454e946ffea42cef92f25ca10de Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Fri, 20 Jun 2014 13:29:00 -0700 Subject: [PATCH] staging: comedi: s626: remove 'set_mode' callback from encoder private data There are two functions used for the 'set_mode' callback. One is used for the channel 0-2 encoders and the other for the channel 3-5 encoders. Add a helper function, s626_set_mode(), that uses the encoder channel number to determine which function to call. Remove the then unnecessary 'set_mode' member and just call s626_set_mode() directly. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/s626.c | 48 +++++++++++++-------------- 1 file changed, 23 insertions(+), 25 deletions(-) diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c index 348b28f92e42..6a322e39d5fa 100644 --- a/drivers/staging/comedi/drivers/s626.c +++ b/drivers/staging/comedi/drivers/s626.c @@ -106,12 +106,6 @@ struct s626_private { struct s626_enc_info { int chan; - /* Pointers to functions that differ for A and B counters: */ - /* Program standardized operating mode. */ - void (*set_mode)(struct comedi_device *dev, - const struct s626_enc_info *k, uint16_t setup, - uint16_t disable_int_src); - uint16_t my_event_bits[4]; /* bit translations for IntSrc -->RDMISC2 */ }; @@ -1051,6 +1045,16 @@ static void s626_set_mode_b(struct comedi_device *dev, S626_CRBMSK_CLKENAB_A | S626_CRBMSK_LATCHSRC, crb); } +static void s626_set_mode(struct comedi_device *dev, + const struct s626_enc_info *k, + uint16_t setup, uint16_t disable_int_src) +{ + if (k->chan < 3) + s626_set_mode_a(dev, k, setup, disable_int_src); + else + s626_set_mode_b(dev, k, setup, disable_int_src); +} + /* * Return/set a counter's enable. enab: 0=always enabled, 1=enabled by index. */ @@ -1194,8 +1198,8 @@ static uint16_t s626_get_int_src(struct comedi_device *dev, static void s626_set_clk_mult(struct comedi_device *dev, const struct s626_enc_info *k, uint16_t value) { - k->set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_CLKMULT) | - S626_SET_STD_CLKMULT(value)), false); + s626_set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_CLKMULT) | + S626_SET_STD_CLKMULT(value)), false); } static uint16_t s626_get_clk_mult(struct comedi_device *dev, @@ -1210,8 +1214,8 @@ static uint16_t s626_get_clk_mult(struct comedi_device *dev, static void s626_set_clk_pol(struct comedi_device *dev, const struct s626_enc_info *k, uint16_t value) { - k->set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_CLKPOL) | - S626_SET_STD_CLKPOL(value)), false); + s626_set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_CLKPOL) | + S626_SET_STD_CLKPOL(value)), false); } static uint16_t s626_get_clk_pol(struct comedi_device *dev, @@ -1226,8 +1230,8 @@ static uint16_t s626_get_clk_pol(struct comedi_device *dev, static void s626_set_enc_mode(struct comedi_device *dev, const struct s626_enc_info *k, uint16_t value) { - k->set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_ENCMODE) | - S626_SET_STD_ENCMODE(value)), false); + s626_set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_ENCMODE) | + S626_SET_STD_ENCMODE(value)), false); } static uint16_t s626_get_enc_mode(struct comedi_device *dev, @@ -1242,8 +1246,8 @@ static uint16_t s626_get_enc_mode(struct comedi_device *dev, static void s626_set_index_pol(struct comedi_device *dev, const struct s626_enc_info *k, uint16_t value) { - k->set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_INDXPOL) | - S626_SET_STD_INDXPOL(value != 0)), false); + s626_set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_INDXPOL) | + S626_SET_STD_INDXPOL(value != 0)), false); } static uint16_t s626_get_index_pol(struct comedi_device *dev, @@ -1258,8 +1262,8 @@ static uint16_t s626_get_index_pol(struct comedi_device *dev, static void s626_set_index_src(struct comedi_device *dev, const struct s626_enc_info *k, uint16_t value) { - k->set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_INDXSRC) | - S626_SET_STD_INDXSRC(value != 0)), false); + s626_set_mode(dev, k, ((s626_get_mode(dev, k) & ~S626_STDMSK_INDXSRC) | + S626_SET_STD_INDXSRC(value != 0)), false); } static uint16_t s626_get_index_src(struct comedi_device *dev, @@ -1300,27 +1304,21 @@ static void s626_pulse_index(struct comedi_device *dev, static const struct s626_enc_info s626_enc_chan_info[] = { { .chan = 0, - .set_mode = s626_set_mode_a, .my_event_bits = S626_EVBITS(0), }, { .chan = 1, - .set_mode = s626_set_mode_a, .my_event_bits = S626_EVBITS(1), }, { .chan = 2, - .set_mode = s626_set_mode_a, .my_event_bits = S626_EVBITS(2), }, { .chan = 3, - .set_mode = s626_set_mode_b, .my_event_bits = S626_EVBITS(3), }, { .chan = 4, - .set_mode = s626_set_mode_b, .my_event_bits = S626_EVBITS(4), }, { .chan = 5, - .set_mode = s626_set_mode_b, .my_event_bits = S626_EVBITS(5), }, }; @@ -2061,7 +2059,7 @@ static void s626_timer_load(struct comedi_device *dev, uint16_t value_latchsrc = S626_LATCHSRC_A_INDXA; /* uint16_t enab = S626_CLKENAB_ALWAYS; */ - k->set_mode(dev, k, setup, false); + s626_set_mode(dev, k, setup, false); /* Set the preload register */ s626_preload(dev, k, tick); @@ -2459,7 +2457,7 @@ static int s626_enc_insn_config(struct comedi_device *dev, /* (data==NULL) ? (Preloadvalue=0) : (Preloadvalue=data[0]); */ - k->set_mode(dev, k, setup, true); + s626_set_mode(dev, k, setup, true); s626_preload(dev, k, data[0]); s626_pulse_index(dev, k); s626_set_latch_source(dev, k, value_latchsrc); @@ -2553,7 +2551,7 @@ static void s626_counters_init(struct comedi_device *dev) */ for (chan = 0; chan < S626_ENCODER_CHANNELS; chan++) { k = &s626_enc_chan_info[chan]; - k->set_mode(dev, k, setup, true); + s626_set_mode(dev, k, setup, true); s626_set_int_src(dev, k, 0); s626_reset_cap_flags(dev, k); s626_set_enable(dev, k, S626_CLKENAB_ALWAYS); -- 2.20.1