return setup;
}
+/*
+ * Set the operating mode for the specified counter. The setup
+ * parameter is treated as a COUNTER_SETUP data type. The following
+ * parameters are programmable (all other parms are ignored): ClkMult,
+ * ClkPol, ClkEnab, IndexSrc, IndexPol, LoadSrc.
+ */
+static void set_mode_a(struct comedi_device *dev, const struct s626_enc_info *k,
+ uint16_t setup, uint16_t disable_int_src)
+{
+ struct s626_private *devpriv = dev->private;
+ uint16_t cra;
+ uint16_t crb;
+
+ /* Initialize CRA and CRB images. */
+ /* Preload trigger is passed through. */
+ cra = setup & CRAMSK_LOADSRC_A;
+ /* IndexSrc is restricted to ENC_X or IndxPol. */
+ cra |= ((setup & STDMSK_INDXSRC) >>
+ (STDBIT_INDXSRC - (CRABIT_INDXSRC_A + 1)));
+
+ /* Reset any pending CounterA event captures. */
+ crb = CRBMSK_INTRESETCMD | CRBMSK_INTRESET_A;
+ /* Clock enable is passed through. */
+ crb |= (setup & STDMSK_CLKENAB) << (CRBBIT_CLKENAB_A - STDBIT_CLKENAB);
+
+ /* Force IntSrc to Disabled if disable_int_src is asserted. */
+ if (!disable_int_src)
+ cra |= ((setup & STDMSK_INTSRC) >> (STDBIT_INTSRC -
+ CRABIT_INTSRC_A));
+
+ /* Populate all mode-dependent attributes of CRA & CRB images. */
+ switch ((setup & STDMSK_CLKSRC) >> STDBIT_CLKSRC) {
+ case CLKSRC_EXTENDER: /* Extender Mode: Force to Timer mode
+ * (Extender valid only for B counters). */
+ /* Fall through to case CLKSRC_TIMER: */
+ case CLKSRC_TIMER: /* Timer Mode: */
+ /* ClkSrcA<1> selects system clock */
+ cra |= 2 << CRABIT_CLKSRC_A;
+ /* Count direction (ClkSrcA<0>) obtained from ClkPol. */
+ cra |= (setup & STDMSK_CLKPOL) >>
+ (STDBIT_CLKPOL - CRABIT_CLKSRC_A);
+ /* ClkPolA behaves as always-on clock enable. */
+ cra |= 1 << CRABIT_CLKPOL_A;
+ /* ClkMult must be 1x. */
+ cra |= MULT_X1 << CRABIT_CLKMULT_A;
+ break;
+ default: /* Counter Mode: */
+ /* Select ENC_C and ENC_D as clock/direction inputs. */
+ cra |= CLKSRC_COUNTER;
+ /* Clock polarity is passed through. */
+ cra |= (setup & STDMSK_CLKPOL) <<
+ (CRABIT_CLKPOL_A - STDBIT_CLKPOL);
+ /* Force multiplier to x1 if not legal, else pass through. */
+ if ((setup & STDMSK_CLKMULT) == (MULT_X0 << STDBIT_CLKMULT))
+ cra |= MULT_X1 << CRABIT_CLKMULT_A;
+ else
+ cra |= (setup & STDMSK_CLKMULT) <<
+ (CRABIT_CLKMULT_A - STDBIT_CLKMULT);
+ break;
+ }
+
+ /*
+ * Force positive index polarity if IndxSrc is software-driven only,
+ * otherwise pass it through.
+ */
+ if (~setup & STDMSK_INDXSRC)
+ cra |= (setup & STDMSK_INDXPOL) <<
+ (CRABIT_INDXPOL_A - STDBIT_INDXPOL);
+
+ /*
+ * If IntSrc has been forced to Disabled, update the MISC2 interrupt
+ * enable mask to indicate the counter interrupt is disabled.
+ */
+ if (disable_int_src)
+ devpriv->counter_int_enabs &= ~k->my_event_bits[3];
+
+ /*
+ * While retaining CounterB and LatchSrc configurations, program the
+ * new counter operating mode.
+ */
+ debi_replace(dev, k->my_cra, CRAMSK_INDXSRC_B | CRAMSK_CLKSRC_B, cra);
+ debi_replace(dev, k->my_crb, ~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_A), crb);
+}
+
+static void set_mode_b(struct comedi_device *dev, const struct s626_enc_info *k,
+ uint16_t setup, uint16_t disable_int_src)
+{
+ struct s626_private *devpriv = dev->private;
+ uint16_t cra;
+ uint16_t crb;
+
+ /* Initialize CRA and CRB images. */
+ /* IndexSrc field is restricted to ENC_X or IndxPol. */
+ cra = (setup & STDMSK_INDXSRC) <<
+ (CRABIT_INDXSRC_B + 1 - STDBIT_INDXSRC);
+
+ /* Reset event captures and disable interrupts. */
+ crb = CRBMSK_INTRESETCMD | CRBMSK_INTRESET_B;
+ /* Clock enable is passed through. */
+ crb |= (setup & STDMSK_CLKENAB) << (CRBBIT_CLKENAB_B - STDBIT_CLKENAB);
+ /* Preload trigger source is passed through. */
+ crb |= (setup & STDMSK_LOADSRC) >> (STDBIT_LOADSRC - CRBBIT_LOADSRC_B);
+
+ /* Force IntSrc to Disabled if disable_int_src is asserted. */
+ if (!disable_int_src)
+ crb |= (setup & STDMSK_INTSRC) >>
+ (STDBIT_INTSRC - CRBBIT_INTSRC_B);
+
+ /* Populate all mode-dependent attributes of CRA & CRB images. */
+ switch ((setup & STDMSK_CLKSRC) >> STDBIT_CLKSRC) {
+ case CLKSRC_TIMER: /* Timer Mode: */
+ /* ClkSrcB<1> selects system clock */
+ cra |= 2 << CRABIT_CLKSRC_B;
+ /* with direction (ClkSrcB<0>) obtained from ClkPol. */
+ cra |= (setup & STDMSK_CLKPOL) <<
+ (CRABIT_CLKSRC_B - STDBIT_CLKPOL);
+ /* ClkPolB behaves as always-on clock enable. */
+ crb |= 1 << CRBBIT_CLKPOL_B;
+ /* ClkMultB must be 1x. */
+ crb |= MULT_X1 << CRBBIT_CLKMULT_B;
+ break;
+ case CLKSRC_EXTENDER: /* Extender Mode: */
+ /* ClkSrcB source is OverflowA (same as "timer") */
+ cra |= 2 << CRABIT_CLKSRC_B;
+ /* with direction obtained from ClkPol. */
+ cra |= (setup & STDMSK_CLKPOL) <<
+ (CRABIT_CLKSRC_B - STDBIT_CLKPOL);
+ /* ClkPolB controls IndexB -- always set to active. */
+ crb |= 1 << CRBBIT_CLKPOL_B;
+ /* ClkMultB selects OverflowA as the clock source. */
+ crb |= MULT_X0 << CRBBIT_CLKMULT_B;
+ break;
+ default: /* Counter Mode: */
+ /* Select ENC_C and ENC_D as clock/direction inputs. */
+ cra |= CLKSRC_COUNTER << CRABIT_CLKSRC_B;
+ /* ClkPol is passed through. */
+ crb |= (setup & STDMSK_CLKPOL) >>
+ (STDBIT_CLKPOL - CRBBIT_CLKPOL_B);
+ /* Force ClkMult to x1 if not legal, otherwise pass through. */
+ if ((setup & STDMSK_CLKMULT) == (MULT_X0 << STDBIT_CLKMULT))
+ crb |= MULT_X1 << CRBBIT_CLKMULT_B;
+ else
+ crb |= (setup & STDMSK_CLKMULT) <<
+ (CRBBIT_CLKMULT_B - STDBIT_CLKMULT);
+ break;
+ }
+
+ /*
+ * Force positive index polarity if IndxSrc is software-driven only,
+ * otherwise pass it through.
+ */
+ if (~setup & STDMSK_INDXSRC)
+ crb |= (setup & STDMSK_INDXPOL) >>
+ (STDBIT_INDXPOL - CRBBIT_INDXPOL_B);
+
+ /*
+ * If IntSrc has been forced to Disabled, update the MISC2 interrupt
+ * enable mask to indicate the counter interrupt is disabled.
+ */
+ if (disable_int_src)
+ devpriv->counter_int_enabs &= ~k->my_event_bits[3];
+
+ /*
+ * While retaining CounterA and LatchSrc configurations, program the
+ * new counter operating mode.
+ */
+ debi_replace(dev, k->my_cra, ~(CRAMSK_INDXSRC_B | CRAMSK_CLKSRC_B),
+ cra);
+ debi_replace(dev, k->my_crb, CRBMSK_CLKENAB_A | CRBMSK_LATCHSRC, crb);
+}
+
+/*
+ * Return/set a counter's enable. enab: 0=always enabled, 1=enabled by index.
+ */
+static void set_enable_a(struct comedi_device *dev,
+ const struct s626_enc_info *k, uint16_t enab)
+{
+ debi_replace(dev, k->my_crb, ~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_A),
+ enab << CRBBIT_CLKENAB_A);
+}
+
+static void set_enable_b(struct comedi_device *dev,
+ const struct s626_enc_info *k, uint16_t enab)
+{
+ debi_replace(dev, k->my_crb, ~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_B),
+ enab << CRBBIT_CLKENAB_B);
+}
+
+static uint16_t get_enable_a(struct comedi_device *dev,
+ const struct s626_enc_info *k)
+{
+ return (debi_read(dev, k->my_crb) >> CRBBIT_CLKENAB_A) & 1;
+}
+
+static uint16_t get_enable_b(struct comedi_device *dev,
+ const struct s626_enc_info *k)
+{
+ return (debi_read(dev, k->my_crb) >> CRBBIT_CLKENAB_B) & 1;
+}
+
+#ifdef unused
+static uint16_t get_latch_source(struct comedi_device *dev,
+ const struct s626_enc_info *k)
+{
+ return (debi_read(dev, k->my_crb) >> CRBBIT_LATCHSRC) & 3;
+}
+#endif
+
+/*
+ * Return/set the event that will trigger transfer of the preload
+ * register into the counter. 0=ThisCntr_Index, 1=ThisCntr_Overflow,
+ * 2=OverflowA (B counters only), 3=disabled.
+ */
+static void set_load_trig_a(struct comedi_device *dev,
+ const struct s626_enc_info *k, uint16_t trig)
+{
+ debi_replace(dev, k->my_cra, ~CRAMSK_LOADSRC_A,
+ trig << CRABIT_LOADSRC_A);
+}
+
+static void set_load_trig_b(struct comedi_device *dev,
+ const struct s626_enc_info *k, uint16_t trig)
+{
+ debi_replace(dev, k->my_crb, ~(CRBMSK_LOADSRC_B | CRBMSK_INTCTRL),
+ trig << CRBBIT_LOADSRC_B);
+}
+
+static uint16_t get_load_trig_a(struct comedi_device *dev,
+ const struct s626_enc_info *k)
+{
+ return (debi_read(dev, k->my_cra) >> CRABIT_LOADSRC_A) & 3;
+}
+
+static uint16_t get_load_trig_b(struct comedi_device *dev,
+ const struct s626_enc_info *k)
+{
+ return (debi_read(dev, k->my_crb) >> CRBBIT_LOADSRC_B) & 3;
+}
+
static unsigned int s626_ai_reg_to_uint(int data)
{
unsigned int tempdata;
}
}
-/*
- * Set the operating mode for the specified counter. The setup
- * parameter is treated as a COUNTER_SETUP data type. The following
- * parameters are programmable (all other parms are ignored): ClkMult,
- * ClkPol, ClkEnab, IndexSrc, IndexPol, LoadSrc.
- */
-static void set_mode_a(struct comedi_device *dev, const struct s626_enc_info *k,
- uint16_t setup, uint16_t disable_int_src)
-{
- struct s626_private *devpriv = dev->private;
- uint16_t cra;
- uint16_t crb;
-
- /* Initialize CRA and CRB images. */
- /* Preload trigger is passed through. */
- cra = setup & CRAMSK_LOADSRC_A;
- /* IndexSrc is restricted to ENC_X or IndxPol. */
- cra |= ((setup & STDMSK_INDXSRC) >>
- (STDBIT_INDXSRC - (CRABIT_INDXSRC_A + 1)));
-
- /* Reset any pending CounterA event captures. */
- crb = CRBMSK_INTRESETCMD | CRBMSK_INTRESET_A;
- /* Clock enable is passed through. */
- crb |= (setup & STDMSK_CLKENAB) << (CRBBIT_CLKENAB_A - STDBIT_CLKENAB);
-
- /* Force IntSrc to Disabled if disable_int_src is asserted. */
- if (!disable_int_src)
- cra |= ((setup & STDMSK_INTSRC) >> (STDBIT_INTSRC -
- CRABIT_INTSRC_A));
-
- /* Populate all mode-dependent attributes of CRA & CRB images. */
- switch ((setup & STDMSK_CLKSRC) >> STDBIT_CLKSRC) {
- case CLKSRC_EXTENDER: /* Extender Mode: Force to Timer mode
- * (Extender valid only for B counters). */
- /* Fall through to case CLKSRC_TIMER: */
- case CLKSRC_TIMER: /* Timer Mode: */
- /* ClkSrcA<1> selects system clock */
- cra |= 2 << CRABIT_CLKSRC_A;
- /* Count direction (ClkSrcA<0>) obtained from ClkPol. */
- cra |= (setup & STDMSK_CLKPOL) >>
- (STDBIT_CLKPOL - CRABIT_CLKSRC_A);
- /* ClkPolA behaves as always-on clock enable. */
- cra |= 1 << CRABIT_CLKPOL_A;
- /* ClkMult must be 1x. */
- cra |= MULT_X1 << CRABIT_CLKMULT_A;
- break;
- default: /* Counter Mode: */
- /* Select ENC_C and ENC_D as clock/direction inputs. */
- cra |= CLKSRC_COUNTER;
- /* Clock polarity is passed through. */
- cra |= (setup & STDMSK_CLKPOL) <<
- (CRABIT_CLKPOL_A - STDBIT_CLKPOL);
- /* Force multiplier to x1 if not legal, else pass through. */
- if ((setup & STDMSK_CLKMULT) == (MULT_X0 << STDBIT_CLKMULT))
- cra |= MULT_X1 << CRABIT_CLKMULT_A;
- else
- cra |= (setup & STDMSK_CLKMULT) <<
- (CRABIT_CLKMULT_A - STDBIT_CLKMULT);
- break;
- }
-
- /*
- * Force positive index polarity if IndxSrc is software-driven only,
- * otherwise pass it through.
- */
- if (~setup & STDMSK_INDXSRC)
- cra |= (setup & STDMSK_INDXPOL) <<
- (CRABIT_INDXPOL_A - STDBIT_INDXPOL);
-
- /*
- * If IntSrc has been forced to Disabled, update the MISC2 interrupt
- * enable mask to indicate the counter interrupt is disabled.
- */
- if (disable_int_src)
- devpriv->counter_int_enabs &= ~k->my_event_bits[3];
-
- /*
- * While retaining CounterB and LatchSrc configurations, program the
- * new counter operating mode.
- */
- debi_replace(dev, k->my_cra, CRAMSK_INDXSRC_B | CRAMSK_CLKSRC_B, cra);
- debi_replace(dev, k->my_crb, ~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_A), crb);
-}
-
-static void set_mode_b(struct comedi_device *dev, const struct s626_enc_info *k,
- uint16_t setup, uint16_t disable_int_src)
-{
- struct s626_private *devpriv = dev->private;
- uint16_t cra;
- uint16_t crb;
-
- /* Initialize CRA and CRB images. */
- /* IndexSrc field is restricted to ENC_X or IndxPol. */
- cra = (setup & STDMSK_INDXSRC) <<
- (CRABIT_INDXSRC_B + 1 - STDBIT_INDXSRC);
-
- /* Reset event captures and disable interrupts. */
- crb = CRBMSK_INTRESETCMD | CRBMSK_INTRESET_B;
- /* Clock enable is passed through. */
- crb |= (setup & STDMSK_CLKENAB) << (CRBBIT_CLKENAB_B - STDBIT_CLKENAB);
- /* Preload trigger source is passed through. */
- crb |= (setup & STDMSK_LOADSRC) >> (STDBIT_LOADSRC - CRBBIT_LOADSRC_B);
-
- /* Force IntSrc to Disabled if disable_int_src is asserted. */
- if (!disable_int_src)
- crb |= (setup & STDMSK_INTSRC) >>
- (STDBIT_INTSRC - CRBBIT_INTSRC_B);
-
- /* Populate all mode-dependent attributes of CRA & CRB images. */
- switch ((setup & STDMSK_CLKSRC) >> STDBIT_CLKSRC) {
- case CLKSRC_TIMER: /* Timer Mode: */
- /* ClkSrcB<1> selects system clock */
- cra |= 2 << CRABIT_CLKSRC_B;
- /* with direction (ClkSrcB<0>) obtained from ClkPol. */
- cra |= (setup & STDMSK_CLKPOL) <<
- (CRABIT_CLKSRC_B - STDBIT_CLKPOL);
- /* ClkPolB behaves as always-on clock enable. */
- crb |= 1 << CRBBIT_CLKPOL_B;
- /* ClkMultB must be 1x. */
- crb |= MULT_X1 << CRBBIT_CLKMULT_B;
- break;
- case CLKSRC_EXTENDER: /* Extender Mode: */
- /* ClkSrcB source is OverflowA (same as "timer") */
- cra |= 2 << CRABIT_CLKSRC_B;
- /* with direction obtained from ClkPol. */
- cra |= (setup & STDMSK_CLKPOL) <<
- (CRABIT_CLKSRC_B - STDBIT_CLKPOL);
- /* ClkPolB controls IndexB -- always set to active. */
- crb |= 1 << CRBBIT_CLKPOL_B;
- /* ClkMultB selects OverflowA as the clock source. */
- crb |= MULT_X0 << CRBBIT_CLKMULT_B;
- break;
- default: /* Counter Mode: */
- /* Select ENC_C and ENC_D as clock/direction inputs. */
- cra |= CLKSRC_COUNTER << CRABIT_CLKSRC_B;
- /* ClkPol is passed through. */
- crb |= (setup & STDMSK_CLKPOL) >>
- (STDBIT_CLKPOL - CRBBIT_CLKPOL_B);
- /* Force ClkMult to x1 if not legal, otherwise pass through. */
- if ((setup & STDMSK_CLKMULT) == (MULT_X0 << STDBIT_CLKMULT))
- crb |= MULT_X1 << CRBBIT_CLKMULT_B;
- else
- crb |= (setup & STDMSK_CLKMULT) <<
- (CRBBIT_CLKMULT_B - STDBIT_CLKMULT);
- break;
- }
-
- /*
- * Force positive index polarity if IndxSrc is software-driven only,
- * otherwise pass it through.
- */
- if (~setup & STDMSK_INDXSRC)
- crb |= (setup & STDMSK_INDXPOL) >>
- (STDBIT_INDXPOL - CRBBIT_INDXPOL_B);
-
- /*
- * If IntSrc has been forced to Disabled, update the MISC2 interrupt
- * enable mask to indicate the counter interrupt is disabled.
- */
- if (disable_int_src)
- devpriv->counter_int_enabs &= ~k->my_event_bits[3];
-
- /*
- * While retaining CounterA and LatchSrc configurations, program the
- * new counter operating mode.
- */
- debi_replace(dev, k->my_cra, ~(CRAMSK_INDXSRC_B | CRAMSK_CLKSRC_B),
- cra);
- debi_replace(dev, k->my_crb, CRBMSK_CLKENAB_A | CRBMSK_LATCHSRC, crb);
-}
-
-/*
- * Return/set a counter's enable. enab: 0=always enabled, 1=enabled by index.
- */
-static void set_enable_a(struct comedi_device *dev,
- const struct s626_enc_info *k, uint16_t enab)
-{
- debi_replace(dev, k->my_crb, ~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_A),
- enab << CRBBIT_CLKENAB_A);
-}
-
-static void set_enable_b(struct comedi_device *dev, const
- struct s626_enc_info *k, uint16_t enab)
-{
- debi_replace(dev, k->my_crb, ~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_B),
- enab << CRBBIT_CLKENAB_B);
-}
-
-static uint16_t get_enable_a(struct comedi_device *dev,
- const struct s626_enc_info *k)
-{
- return (debi_read(dev, k->my_crb) >> CRBBIT_CLKENAB_A) & 1;
-}
-
-static uint16_t get_enable_b(struct comedi_device *dev,
- const struct s626_enc_info *k)
-{
- return (debi_read(dev, k->my_crb) >> CRBBIT_CLKENAB_B) & 1;
-}
-
-#ifdef unused
-static uint16_t get_latch_source(struct comedi_device *dev,
- const struct s626_enc_info *k)
-{
- return (debi_read(dev, k->my_crb) >> CRBBIT_LATCHSRC) & 3;
-}
-#endif
-
-/*
- * Return/set the event that will trigger transfer of the preload
- * register into the counter. 0=ThisCntr_Index, 1=ThisCntr_Overflow,
- * 2=OverflowA (B counters only), 3=disabled.
- */
-static void set_load_trig_a(struct comedi_device *dev,
- const struct s626_enc_info *k, uint16_t trig)
-{
- debi_replace(dev, k->my_cra, ~CRAMSK_LOADSRC_A,
- trig << CRABIT_LOADSRC_A);
-}
-
-static void set_load_trig_b(struct comedi_device *dev,
- const struct s626_enc_info *k, uint16_t trig)
-{
- debi_replace(dev, k->my_crb, ~(CRBMSK_LOADSRC_B | CRBMSK_INTCTRL),
- trig << CRBBIT_LOADSRC_B);
-}
-
-static uint16_t get_load_trig_a(struct comedi_device *dev,
- const struct s626_enc_info *k)
-{
- return (debi_read(dev, k->my_cra) >> CRABIT_LOADSRC_A) & 3;
-}
-
-static uint16_t get_load_trig_b(struct comedi_device *dev,
- const struct s626_enc_info *k)
-{
- return (debi_read(dev, k->my_crb) >> CRBBIT_LOADSRC_B) & 3;
-}
-
/*
* Return/set counter interrupt source and clear any captured
* index/overflow events. int_source: 0=Disabled, 1=OverflowOnly,
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff