staging: comedi: amplc_dio200: pass device to clock/gate config

Rename the clock and gate configuration functions for the '8254' counter
subdevices and pass in the pointers to the comedi device and comedi
subdevice.  This is just preparing the way for later changes.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/amplc_dio200.c b/drivers/staging/comedi/drivers/amplc_dio200.c
index 0cc6e11d188aca7d01d2ed5c8192dc9024c3d8f7..a7fdd66e0290827379c1199bb4a7865a681e3808 100644 (file)
--- a/drivers/staging/comedi/drivers/amplc_dio200.c
+++ b/drivers/staging/comedi/drivers/amplc_dio200.c
@@ -953,9 +953,12 @@ dio200_subdev_8254_write(struct comedi_device *dev, struct comedi_subdevice *s,
  * Set gate source for an '8254' counter subdevice channel.
  */
 static int
-dio200_set_gate_src(struct dio200_subdev_8254 *subpriv,
-                   unsigned int counter_number, unsigned int gate_src)
+dio200_subdev_8254_set_gate_src(struct comedi_device *dev,
+                               struct comedi_subdevice *s,
+                               unsigned int counter_number,
+                               unsigned int gate_src)
 {
+       struct dio200_subdev_8254 *subpriv = s->private;
        unsigned char byte;
 
        if (!subpriv->has_clk_gat_sce)
@@ -976,9 +979,12 @@ dio200_set_gate_src(struct dio200_subdev_8254 *subpriv,
  * Get gate source for an '8254' counter subdevice channel.
  */
 static int
-dio200_get_gate_src(struct dio200_subdev_8254 *subpriv,
-                   unsigned int counter_number)
+dio200_subdev_8254_get_gate_src(struct comedi_device *dev,
+                               struct comedi_subdevice *s,
+                               unsigned int counter_number)
 {
+       struct dio200_subdev_8254 *subpriv = s->private;
+
        if (!subpriv->has_clk_gat_sce)
                return -1;
        if (counter_number > 2)
@@ -991,9 +997,12 @@ dio200_get_gate_src(struct dio200_subdev_8254 *subpriv,
  * Set clock source for an '8254' counter subdevice channel.
  */
 static int
-dio200_set_clock_src(struct dio200_subdev_8254 *subpriv,
-                    unsigned int counter_number, unsigned int clock_src)
+dio200_subdev_8254_set_clock_src(struct comedi_device *dev,
+                                struct comedi_subdevice *s,
+                                unsigned int counter_number,
+                                unsigned int clock_src)
 {
+       struct dio200_subdev_8254 *subpriv = s->private;
        unsigned char byte;
 
        if (!subpriv->has_clk_gat_sce)
@@ -1014,9 +1023,12 @@ dio200_set_clock_src(struct dio200_subdev_8254 *subpriv,
  * Get clock source for an '8254' counter subdevice channel.
  */
 static int
-dio200_get_clock_src(struct dio200_subdev_8254 *subpriv,
-                    unsigned int counter_number, unsigned int *period_ns)
+dio200_subdev_8254_get_clock_src(struct comedi_device *dev,
+                                struct comedi_subdevice *s,
+                                unsigned int counter_number,
+                                unsigned int *period_ns)
 {
+       struct dio200_subdev_8254 *subpriv = s->private;
        unsigned clock_src;
 
        if (!subpriv->has_clk_gat_sce)
@@ -1052,12 +1064,12 @@ dio200_subdev_8254_config(struct comedi_device *dev, struct comedi_subdevice *s,
                data[1] = i8254_status(subpriv->iobase, 0, chan);
                break;
        case INSN_CONFIG_SET_GATE_SRC:
-               ret = dio200_set_gate_src(subpriv, chan, data[2]);
+               ret = dio200_subdev_8254_set_gate_src(dev, s, chan, data[2]);
                if (ret < 0)
                        ret = -EINVAL;
                break;
        case INSN_CONFIG_GET_GATE_SRC:
-               ret = dio200_get_gate_src(subpriv, chan);
+               ret = dio200_subdev_8254_get_gate_src(dev, s, chan);
                if (ret < 0) {
                        ret = -EINVAL;
                        break;
@@ -1065,12 +1077,12 @@ dio200_subdev_8254_config(struct comedi_device *dev, struct comedi_subdevice *s,
                data[2] = ret;
                break;
        case INSN_CONFIG_SET_CLOCK_SRC:
-               ret = dio200_set_clock_src(subpriv, chan, data[1]);
+               ret = dio200_subdev_8254_set_clock_src(dev, s, chan, data[1]);
                if (ret < 0)
                        ret = -EINVAL;
                break;
        case INSN_CONFIG_GET_CLOCK_SRC:
-               ret = dio200_get_clock_src(subpriv, chan, &data[2]);
+               ret = dio200_subdev_8254_get_clock_src(dev, s, chan, &data[2]);
                if (ret < 0) {
                        ret = -EINVAL;
                        break;
@@ -1133,9 +1145,9 @@ dio200_subdev_8254_init(struct comedi_device *dev, struct comedi_subdevice *s,
                               I8254_MODE0 | I8254_BINARY);
                if (subpriv->has_clk_gat_sce) {
                        /* Gate source 0 is VCC (logic 1). */
-                       dio200_set_gate_src(subpriv, chan, 0);
+                       dio200_subdev_8254_set_gate_src(dev, s, chan, 0);
                        /* Clock source 0 is the dedicated clock input. */
-                       dio200_set_clock_src(subpriv, chan, 0);
+                       dio200_subdev_8254_set_clock_src(dev, s, chan, 0);
                }
        }