staging: comedi: ni_stc.h: remove NI_PRIVATE_COMMON macro

This macro is used to create the private data structure that is used by
the ni_atmio, ni_mio_cs, and ni_pcimio drivers. These drivers all include
the ni_mio_common.c source to provide most of the driver functionality.

The only driver specific information needed to convert the macro into a
proper struct definition is the MAX_N_CALDACS define. This define is used
to size a couple array members in the struct. The ni_atmio and ni_mio_cs
drivers both define MAX_N_CALDACS as 32. The ni_pcimio driver defines it
as (16+16+2). The ni_mio_common file only uses this define to sanity check
that the struct members are large enough for the number of channels in
the calibration subdevice.

Move the MAX_N_CALDACS define to ni_stc.h and set it to the largest number
of caldacs (34).

The ni_atmio and ni_mio_cs drivers also add one additional member to the
private data struct before using the NI_PRIVATE_COMMON macro.

For the ni_atmio driver, the struct pnp_dev pointer can be saved in the
comedi_device as the 'hw_dev'. The (*detach) of this driver can then use
to_pnp_dev() to get it back when detaching the pnp device.

In the ni_mio_cs driver, the struct pcmia_device pointer is not used so
it can simply be removed.

The NI_PRIVATE_COMMON macro can then be converted into a proper struct
definition.
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>

drivers/staging/comedi/drivers/ni_atmio.c

@@ -107,8 +107,6 @@ are not supported.
 
 #define NI_SIZE 0x20
 
-#define MAX_N_CALDACS 32
-
 static const struct ni_board_struct ni_boards[] = {
 	{.device_id = 44,
 	 .isapnp_id = 0x0000,	/* XXX unknown */
@@ -272,12 +270,6 @@ static const int ni_irqpin[] = {
 
 #define NI_E_IRQ_FLAGS		0
 
-struct ni_private {
-	struct pnp_dev *isapnp_dev;
-	NI_PRIVATE_COMMON
-
-};
-
 /* How we access registers */
 
 #define ni_writel(a, b)		(outl((a), (b)+dev->iobase))
@@ -428,7 +420,7 @@ static int ni_atmio_attach(struct comedi_device *dev,
 
 		iobase = pnp_port_start(isapnp_dev, 0);
 		irq = pnp_irq(isapnp_dev, 0);
-		devpriv->isapnp_dev = isapnp_dev;
+		comedi_set_hw_dev(dev, &isapnp_dev->dev);
 	}
 
 	ret = comedi_request_region(dev, iobase, NI_SIZE);
@@ -477,12 +469,14 @@ static int ni_atmio_attach(struct comedi_device *dev,
 
 static void ni_atmio_detach(struct comedi_device *dev)
 {
-	struct ni_private *devpriv = dev->private;
+	struct pnp_dev *isapnp_dev;
 
 	mio_common_detach(dev);
 	comedi_legacy_detach(dev);
-	if (devpriv->isapnp_dev)
-		pnp_device_detach(devpriv->isapnp_dev);
+
+	isapnp_dev = dev->hw_dev ? to_pnp_dev(dev->hw_dev) : NULL;
+	if (isapnp_dev)
+		pnp_device_detach(isapnp_dev);
 }
 
 static struct comedi_driver ni_atmio_driver = {

drivers/staging/comedi/drivers/ni_mio_cs.c

@@ -56,8 +56,6 @@ See the notes in the ni_atmio.o driver.
 
 #define NI_SIZE 0x20
 
-#define MAX_N_CALDACS 32
-
 static const struct ni_board_struct ni_boards[] = {
 	{
 		.device_id	= 0x010d,
@@ -143,12 +141,6 @@ static const struct ni_board_struct ni_boards[] = {
 
 #define IRQ_POLARITY 1
 
-struct ni_private {
-
-	struct pcmcia_device *link;
-
-NI_PRIVATE_COMMON};
-
 /* How we access registers */
 
 #define ni_writel(a, b)		(outl((a), (b)+dev->iobase))

drivers/staging/comedi/drivers/ni_pcimio.c

@@ -121,8 +121,6 @@ SCXI is probably broken for m-series boards.
 #define PCIMIO 1
 #undef ATMIO
 
-#define MAX_N_CALDACS (16+16+2)
-
 #define DRV_NAME "ni_pcimio"
 
 /* These are not all the possible ao ranges for 628x boards.
@@ -1044,9 +1042,6 @@ static const struct ni_board_struct ni_boards[] = {
 	},
 };
 
-struct ni_private {
-NI_PRIVATE_COMMON};
-
 /* How we access registers */
 
 #define ni_writel(a, b)	(writel((a), devpriv->mite->daq_io_addr + (b)))

drivers/staging/comedi/drivers/ni_stc.h

@@ -1416,92 +1416,94 @@ struct ni_board_struct {
 	enum caldac_enum caldac[3];
 };
 
+#define MAX_N_CALDACS	34
 #define MAX_N_AO_CHAN	8
 #define NUM_GPCT	2
 
-#define NI_PRIVATE_COMMON					\
-	uint16_t (*stc_readw)(struct comedi_device *dev, int register);	\
-	uint32_t (*stc_readl)(struct comedi_device *dev, int register);	\
-	void (*stc_writew)(struct comedi_device *dev, uint16_t value, int register);	\
-	void (*stc_writel)(struct comedi_device *dev, uint32_t value, int register);	\
-	\
-	unsigned short dio_output;				\
-	unsigned short dio_control;				\
-	int ao0p, ao1p;						\
-	int lastchan;						\
-	int last_do;						\
-	int rt_irq;						\
-	int irqmask;						\
-	int aimode;						\
-	int ai_continuous;					\
-	int blocksize;						\
-	int n_left;						\
-	unsigned int ai_calib_source;				\
-	unsigned int ai_calib_source_enabled;			\
-	spinlock_t window_lock; \
-	spinlock_t soft_reg_copy_lock; \
-	spinlock_t mite_channel_lock; \
-								\
-	int changain_state;					\
-	unsigned int changain_spec;				\
-								\
-	unsigned int caldac_maxdata_list[MAX_N_CALDACS];	\
-	unsigned short ao[MAX_N_AO_CHAN];					\
-	unsigned short caldacs[MAX_N_CALDACS];				\
-								\
-	unsigned short ai_cmd2;	\
-								\
-	unsigned short ao_conf[MAX_N_AO_CHAN];				\
-	unsigned short ao_mode1;				\
-	unsigned short ao_mode2;				\
-	unsigned short ao_mode3;				\
-	unsigned short ao_cmd1;					\
-	unsigned short ao_cmd2;					\
-	unsigned short ao_cmd3;					\
-	unsigned short ao_trigger_select;			\
-								\
-	struct ni_gpct_device *counter_dev;	\
-	unsigned short an_trig_etc_reg;				\
-								\
-	unsigned ai_offset[512];				\
-								\
-	unsigned long serial_interval_ns;                       \
-	unsigned char serial_hw_mode;                           \
-	unsigned short clock_and_fout;				\
-	unsigned short clock_and_fout2;				\
-								\
-	unsigned short int_a_enable_reg;			\
-	unsigned short int_b_enable_reg;			\
-	unsigned short io_bidirection_pin_reg;			\
-	unsigned short rtsi_trig_direction_reg;			\
-	unsigned short rtsi_trig_a_output_reg; \
-	unsigned short rtsi_trig_b_output_reg; \
-	unsigned short pfi_output_select_reg[NUM_PFI_OUTPUT_SELECT_REGS]; \
-	unsigned short ai_ao_select_reg; \
-	unsigned short g0_g1_select_reg; \
-	unsigned short cdio_dma_select_reg; \
-	\
-	unsigned clock_ns; \
-	unsigned clock_source; \
-	\
-	unsigned short atrig_mode;				\
-	unsigned short atrig_high;				\
-	unsigned short atrig_low;				\
-	\
-	unsigned short pwm_up_count;	\
-	unsigned short pwm_down_count;	\
-	\
-	unsigned short ai_fifo_buffer[0x2000];			\
-	uint8_t eeprom_buffer[M_SERIES_EEPROM_SIZE]; \
-	uint32_t serial_number; \
-	\
-	struct mite_struct *mite; \
-	struct mite_channel *ai_mite_chan; \
-	struct mite_channel *ao_mite_chan;\
-	struct mite_channel *cdo_mite_chan;\
-	struct mite_dma_descriptor_ring *ai_mite_ring; \
-	struct mite_dma_descriptor_ring *ao_mite_ring; \
-	struct mite_dma_descriptor_ring *cdo_mite_ring; \
+struct ni_private {
+	uint16_t (*stc_readw)(struct comedi_device *, int reg);
+	uint32_t (*stc_readl)(struct comedi_device *, int reg);
+	void (*stc_writew)(struct comedi_device *, uint16_t value, int reg);
+	void (*stc_writel)(struct comedi_device *, uint32_t value, int reg);
+
+	unsigned short dio_output;
+	unsigned short dio_control;
+	int ao0p, ao1p;
+	int lastchan;
+	int last_do;
+	int rt_irq;
+	int irqmask;
+	int aimode;
+	int ai_continuous;
+	int blocksize;
+	int n_left;
+	unsigned int ai_calib_source;
+	unsigned int ai_calib_source_enabled;
+	spinlock_t window_lock;
+	spinlock_t soft_reg_copy_lock;
+	spinlock_t mite_channel_lock;
+
+	int changain_state;
+	unsigned int changain_spec;
+
+	unsigned int caldac_maxdata_list[MAX_N_CALDACS];
+	unsigned short ao[MAX_N_AO_CHAN];
+	unsigned short caldacs[MAX_N_CALDACS];
+
+	unsigned short ai_cmd2;
+
+	unsigned short ao_conf[MAX_N_AO_CHAN];
+	unsigned short ao_mode1;
+	unsigned short ao_mode2;
+	unsigned short ao_mode3;
+	unsigned short ao_cmd1;
+	unsigned short ao_cmd2;
+	unsigned short ao_cmd3;
+	unsigned short ao_trigger_select;
+
+	struct ni_gpct_device *counter_dev;
+	unsigned short an_trig_etc_reg;
+
+	unsigned ai_offset[512];
+
+	unsigned long serial_interval_ns;
+	unsigned char serial_hw_mode;
+	unsigned short clock_and_fout;
+	unsigned short clock_and_fout2;
+
+	unsigned short int_a_enable_reg;
+	unsigned short int_b_enable_reg;
+	unsigned short io_bidirection_pin_reg;
+	unsigned short rtsi_trig_direction_reg;
+	unsigned short rtsi_trig_a_output_reg;
+	unsigned short rtsi_trig_b_output_reg;
+	unsigned short pfi_output_select_reg[NUM_PFI_OUTPUT_SELECT_REGS];
+	unsigned short ai_ao_select_reg;
+	unsigned short g0_g1_select_reg;
+	unsigned short cdio_dma_select_reg;
+
+	unsigned clock_ns;
+	unsigned clock_source;
+
+	unsigned short atrig_mode;
+	unsigned short atrig_high;
+	unsigned short atrig_low;
+
+	unsigned short pwm_up_count;
+	unsigned short pwm_down_count;
+
+	unsigned short ai_fifo_buffer[0x2000];
+	uint8_t eeprom_buffer[M_SERIES_EEPROM_SIZE];
+	uint32_t serial_number;
+
+	struct mite_struct *mite;
+	struct mite_channel *ai_mite_chan;
+	struct mite_channel *ao_mite_chan;
+	struct mite_channel *cdo_mite_chan;
+	struct mite_dma_descriptor_ring *ai_mite_ring;
+	struct mite_dma_descriptor_ring *ao_mite_ring;
+	struct mite_dma_descriptor_ring *cdo_mite_ring;
 	struct mite_dma_descriptor_ring *gpct_mite_ring[NUM_GPCT];
+};
 
 #endif /* _COMEDI_NI_STC_H */