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staging: comedi: ni_stc.h: tidy up G0_G1_Select register and bits

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Rename the CamelCase. Convert the inline helper functions into macros.

Tidy up the driver code to use the new macros. For consistency, make
the ni_set_gpct_dma_channel() helper follow the same style as the
ni_set_ai_dma_channel() and ni_set_ao_dma_channel() helpers.

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 15:00:04 -07:00 • committed by Greg Kroah-Hartman
parent a4b7ef9d8e
commit 7d6f3aaead
2 changed files with 15 additions and 24 deletions
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22
drivers/staging/comedi/drivers/ni_mio_common.c
View file

@ -551,7 +551,7 @@ static inline void ni_set_bitfield(struct comedi_device *dev, int reg,
devpriv->ai_ao_select_reg |= bit_values & bit_mask;
ni_writeb(dev, devpriv->ai_ao_select_reg, reg);
break;
case G0_G1_Select:
case NI_E_DMA_G0_G1_SEL_REG:
devpriv->g0_g1_select_reg &= ~bit_mask;
devpriv->g0_g1_select_reg |= bit_values & bit_mask;
ni_writeb(dev, devpriv->g0_g1_select_reg, reg);
@ -592,19 +592,19 @@ static inline void ni_set_ao_dma_channel(struct comedi_device *dev, int channel)
NI_E_DMA_AO_SEL_MASK, NI_E_DMA_AO_SEL(bits));
}
/* negative mite_channel means no channel */
/* negative channel means no channel */
static inline void ni_set_gpct_dma_channel(struct comedi_device *dev,
unsigned gpct_index,
int mite_channel)
int channel)
{
unsigned bitfield;
unsigned bits = 0;
if (mite_channel >= 0)
bitfield = GPCT_DMA_Select_Bits(gpct_index, mite_channel);
else
bitfield = 0;
ni_set_bitfield(dev, G0_G1_Select, GPCT_DMA_Select_Mask(gpct_index),
bitfield);
if (channel >= 0)
bits = ni_stc_dma_channel_select_bitfield(channel);
ni_set_bitfield(dev, NI_E_DMA_G0_G1_SEL_REG,
NI_E_DMA_G0_G1_SEL_MASK(gpct_index),
NI_E_DMA_G0_G1_SEL(gpct_index, bits));
}
/* negative mite_channel means no channel */
@ -5370,7 +5370,7 @@ static int ni_E_init(struct comedi_device *dev,
/* DMA setup */
ni_writeb(dev, devpriv->ai_ao_select_reg, NI_E_DMA_AI_AO_SEL_REG);
ni_writeb(dev, devpriv->g0_g1_select_reg, G0_G1_Select);
ni_writeb(dev, devpriv->g0_g1_select_reg, NI_E_DMA_G0_G1_SEL_REG);
if (devpriv->is_6xxx) {
ni_writeb(dev, 0, Magic_611x);

17
drivers/staging/comedi/drivers/ni_stc.h
View file

@ -577,6 +577,10 @@
#define NI_E_DMA_AO_SEL(x) (((x) & 0xf) << 4)
#define NI_E_DMA_AO_SEL_MASK NI_E_DMA_AO_SEL(0xf)
#define NI_E_DMA_G0_G1_SEL_REG 0x0b /* w8 */
#define NI_E_DMA_G0_G1_SEL(_g, _c) (((_c) & 0xf) << ((_g) * 4))
#define NI_E_DMA_G0_G1_SEL_MASK(_g) NI_E_DMA_G0_G1_SEL((_g), 0xf)
#define NI_E_SERIAL_CMD_REG 0x0d /* w8 */
#define NI_E_SERIAL_CMD_DAC_LD(x) BIT(3 + (x))
#define NI_E_SERIAL_CMD_EEPROM_CS BIT(2)
@ -588,7 +592,6 @@
#define NI_E_MISC_CMD_EXT_ATRIG NI_E_MISC_CMD_INTEXT_ATRIG(0)
#define NI_E_MISC_CMD_INT_ATRIG NI_E_MISC_CMD_INTEXT_ATRIG(1)
#define G0_G1_Select 0x0b
static inline unsigned ni_stc_dma_channel_select_bitfield(unsigned channel)
{
if (channel < 4)
@ -601,18 +604,6 @@ static inline unsigned ni_stc_dma_channel_select_bitfield(unsigned channel)
return 0;
}
static inline unsigned GPCT_DMA_Select_Bits(unsigned gpct_index,
unsigned mite_channel)
{
return ni_stc_dma_channel_select_bitfield(mite_channel) << (4 *
gpct_index);
}
static inline unsigned GPCT_DMA_Select_Mask(unsigned gpct_index)
{
return 0xf << (4 * gpct_index);
}
#define NI_E_AI_CFG_LO_REG 0x10 /* w16 */
#define NI_E_AI_CFG_LO_LAST_CHAN BIT(15)
#define NI_E_AI_CFG_LO_GEN_TRIG BIT(12)