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staging: comedi: ni_stc.h: tidy up AI_Output_Control_Register and bits 

Rename the CamelCase. Use the BIT() macro to define the bits.

Tidy up the programming of this register un ni_ai_reset() by using a
local variable to set the common bits then writing the register in the
common code path.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2015-05-01 14:59:16 -07:00 коммит произвёл Greg Kroah-Hartman
Родитель d8f62c4638
Коммит aa9d73ba83
2 изменённых файлов: 26 добавлений и 51 удалений
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47
drivers/staging/comedi/drivers/ni_mio_common.c
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@ -355,7 +355,7 @@ static const struct mio_regmap m_series_stc_write_regmap[] = {
[NISTC_IO_BIDIR_PIN_REG] = { 0x172, 2 },
[NISTC_RTSI_TRIG_DIR_REG] = { 0x174, 2 },
[NISTC_INT_CTRL_REG] = { 0x176, 2 },
[AI_Output_Control_Register] = { 0x178, 2 },
[NISTC_AI_OUT_CTRL_REG] = { 0x178, 2 },
[Analog_Trigger_Etc_Register] = { 0x17a, 2 },
[AI_START_STOP_Select_Register] = { 0x17c, 2 },
[AI_Trigger_Select_Register] = { 0x17e, 2 },
@ -1608,6 +1608,7 @@ static int ni_ao_setup_MITE_dma(struct comedi_device *dev)
static int ni_ai_reset(struct comedi_device *dev, struct comedi_subdevice *s)
{
struct ni_private *devpriv = dev->private;
unsigned ai_out_ctrl;
ni_release_ai_mite_channel(dev);
/* ai configuration */
@ -1633,65 +1634,45 @@ static int ni_ai_reset(struct comedi_device *dev, struct comedi_subdevice *s)
ni_stc_writew(dev, 0, NISTC_AI_MODE2_REG);
/* generate FIFO interrupts on non-empty */
ni_stc_writew(dev, (0 << 6) | 0x0000, AI_Mode_3_Register);
ai_out_ctrl = NISTC_AI_OUT_CTRL_SCAN_IN_PROG_SEL(3) |
NISTC_AI_OUT_CTRL_EXTMUX_CLK_SEL(0) |
NISTC_AI_OUT_CTRL_LOCALMUX_CLK_SEL(2) |
NISTC_AI_OUT_CTRL_SC_TC_SEL(3);
if (devpriv->is_611x) {
ni_stc_writew(dev,
AI_SHIFTIN_Pulse_Width |
AI_SOC_Polarity |
AI_LOCALMUX_CLK_Pulse_Width,
AI_Personal_Register);
ni_stc_writew(dev,
AI_SCAN_IN_PROG_Output_Select(3) |
AI_EXTMUX_CLK_Output_Select(0) |
AI_LOCALMUX_CLK_Output_Select(2) |
AI_SC_TC_Output_Select(3) |
AI_CONVERT_Output_Select
(AI_CONVERT_Output_Enable_High),
AI_Output_Control_Register);
ai_out_ctrl |= NISTC_AI_OUT_CTRL_CONVERT_HIGH;
} else if (devpriv->is_6143) {
ni_stc_writew(dev, AI_SHIFTIN_Pulse_Width |
AI_SOC_Polarity |
AI_LOCALMUX_CLK_Pulse_Width,
AI_Personal_Register);
ni_stc_writew(dev,
AI_SCAN_IN_PROG_Output_Select(3) |
AI_EXTMUX_CLK_Output_Select(0) |
AI_LOCALMUX_CLK_Output_Select(2) |
AI_SC_TC_Output_Select(3) |
AI_CONVERT_Output_Select
(AI_CONVERT_Output_Enable_Low),
AI_Output_Control_Register);
ai_out_ctrl |= NISTC_AI_OUT_CTRL_CONVERT_LOW;
} else {
unsigned ai_output_control_bits;
ni_stc_writew(dev,
AI_SHIFTIN_Pulse_Width |
AI_SOC_Polarity |
AI_CONVERT_Pulse_Width |
AI_LOCALMUX_CLK_Pulse_Width,
AI_Personal_Register);
ai_output_control_bits =
AI_SCAN_IN_PROG_Output_Select(3) |
AI_EXTMUX_CLK_Output_Select(0) |
AI_LOCALMUX_CLK_Output_Select(2) |
AI_SC_TC_Output_Select(3);
if (devpriv->is_622x)
ai_output_control_bits |=
AI_CONVERT_Output_Select
(AI_CONVERT_Output_Enable_High);
ai_out_ctrl |= NISTC_AI_OUT_CTRL_CONVERT_HIGH;
else
ai_output_control_bits |=
AI_CONVERT_Output_Select
(AI_CONVERT_Output_Enable_Low);
ni_stc_writew(dev, ai_output_control_bits,
AI_Output_Control_Register);
ai_out_ctrl |= NISTC_AI_OUT_CTRL_CONVERT_LOW;
}
ni_stc_writew(dev, ai_out_ctrl, NISTC_AI_OUT_CTRL_REG);
/* the following registers should not be changed, because there
* are no backup registers in devpriv. If you want to change
* any of these, add a backup register and other appropriate code:
* NISTC_AI_MODE1_REG
* AI_Mode_3_Register
* AI_Personal_Register
* AI_Output_Control_Register
* NISTC_AI_OUT_CTRL_REG
*/
/* clear interrupts */

30
drivers/staging/comedi/drivers/ni_stc.h
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@ -295,6 +295,18 @@
#define NISTC_INT_CTRL_3PIN_INT BIT(1)
#define NISTC_INT_CTRL_INT_POL BIT(0)
#define NISTC_AI_OUT_CTRL_REG 60
#define NISTC_AI_OUT_CTRL_START_SEL BIT(10)
#define NISTC_AI_OUT_CTRL_SCAN_IN_PROG_SEL(x) (((x) & 0x3) << 8)
#define NISTC_AI_OUT_CTRL_EXTMUX_CLK_SEL(x) (((x) & 0x3) << 6)
#define NISTC_AI_OUT_CTRL_LOCALMUX_CLK_SEL(x) (((x) & 0x3) << 4)
#define NISTC_AI_OUT_CTRL_SC_TC_SEL(x) (((x) & 0x3) << 2)
#define NISTC_AI_OUT_CTRL_CONVERT_SEL(x) (((x) & 0x3) << 0)
#define NISTC_AI_OUT_CTRL_CONVERT_HIGH_Z NISTC_AI_OUT_CTRL_CONVERT_SEL(0)
#define NISTC_AI_OUT_CTRL_CONVERT_GND NISTC_AI_OUT_CTRL_CONVERT_SEL(1)
#define NISTC_AI_OUT_CTRL_CONVERT_LOW NISTC_AI_OUT_CTRL_CONVERT_SEL(2)
#define NISTC_AI_OUT_CTRL_CONVERT_HIGH NISTC_AI_OUT_CTRL_CONVERT_SEL(3)
#define AI_Status_1_Register 2
#define Interrupt_A_St 0x8000
#define AI_FIFO_Full_St 0x4000
@ -353,24 +365,6 @@ enum Joint_Status_2_Bits {
#define AO_BC_Save_Registers 18
#define AO_UC_Save_Registers 20
#define AI_Output_Control_Register 60
#define AI_START_Output_Select _bit10
#define AI_SCAN_IN_PROG_Output_Select(x) (((x) & 0x3) << 8)
#define AI_EXTMUX_CLK_Output_Select(x) (((x) & 0x3) << 6)
#define AI_LOCALMUX_CLK_Output_Select(x) ((x)<<4)
#define AI_SC_TC_Output_Select(x) ((x)<<2)
enum ai_convert_output_selection {
AI_CONVERT_Output_High_Z = 0,
AI_CONVERT_Output_Ground = 1,
AI_CONVERT_Output_Enable_Low = 2,
AI_CONVERT_Output_Enable_High = 3
};
static unsigned AI_CONVERT_Output_Select(enum ai_convert_output_selection
selection)
{
return selection & 0x3;
}
#define AI_START_STOP_Select_Register 62
#define AI_START_Polarity _bit15
#define AI_STOP_Polarity _bit14