From 2001807e25d9a645cfaa28e893a0a5968f6b38a0 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 18 Nov 2015 10:07:12 -0700 Subject: [PATCH] staging: comedi: adv_pci_dio: simplify the 'boardid' boardinfo The "board id" register is always 4-bits (4 di channels) and the register used to read the bits is always > 0. Simplify the 'boardid' boardinfo by replacing it with a 'id_reg' member and open-coding the subdevice n_chan. For aesthetics, remove all the *_BOARDID defines and just open-code the register values in the boardinfo. Add the missing boardinfo for the pci1739 board id register and increase the nsubdevs to handle it. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/adv_pci_dio.c | 36 ++++++++------------ 1 file changed, 15 insertions(+), 21 deletions(-) diff --git a/drivers/staging/comedi/drivers/adv_pci_dio.c b/drivers/staging/comedi/drivers/adv_pci_dio.c index 51611c72f742..d24134f1d4a2 100644 --- a/drivers/staging/comedi/drivers/adv_pci_dio.c +++ b/drivers/staging/comedi/drivers/adv_pci_dio.c @@ -60,13 +60,11 @@ enum hw_cards_id { * interrupts */ #define PCI1730_3_INT_CLR 0x10 /* R/W: clear interrupts */ #define PCI1734_IDO 0 /* W: Isolated digital output 0-31 */ -#define PCI173x_BOARDID 4 /* R: Board I/D switch for 1730/3/4 */ /* Advantech PCI-1735U */ #define PCI1735_DI 0 /* R: Digital input 0-31 */ #define PCI1735_DO 0 /* W: Digital output 0-31 */ #define PCI1735_C8254 4 /* R/W: 8254 counter */ -#define PCI1735_BOARDID 8 /* R: Board I/D switch for 1735U */ /* Advantech PCI-1736UP */ #define PCI1736_IDI 0 /* R: Isolated digital input 0-15 */ @@ -75,13 +73,11 @@ enum hw_cards_id { #define PCI1736_3_INT_RF 0x0c /* R/W: set falling/raising edge for * interrupts */ #define PCI1736_3_INT_CLR 0x10 /* R/W: clear interrupts */ -#define PCI1736_BOARDID 4 /* R: Board I/D switch for 1736UP */ /* Advantech PCI-1739U */ #define PCI1739_DIO 0 /* R/W: begin of 8255 registers block */ #define PCI1739_ICR 32 /* W: Interrupt control register */ #define PCI1739_ISR 32 /* R: Interrupt status register */ -#define PCI1739_BOARDID 8 /* R: Board I/D switch for 1739U */ /* Advantech PCI-1750 */ #define PCI1750_IDI 0 /* R: Isolated digital input 0-15 */ @@ -117,12 +113,10 @@ enum hw_cards_id { #define PCI1754_ICR2 0x0c /* R/W: Interrupt control register group 2 */ #define PCI1754_ICR3 0x0e /* R/W: Interrupt control register group 3 */ #define PCI1752_6_CFC 0x12 /* R/W: set/read channel freeze function */ -#define PCI175x_BOARDID 0x10 /* R: Board I/D switch for 1752/4/6 */ /* Advantech PCI-1762 registers */ #define PCI1762_RO 0 /* R/W: Relays status/output */ #define PCI1762_IDI 2 /* R: Isolated input status */ -#define PCI1762_BOARDID 4 /* R: Board I/D switch */ #define PCI1762_ICR 6 /* W: Interrupt control register */ #define PCI1762_ISR 6 /* R: Interrupt status register */ @@ -138,7 +132,7 @@ struct dio_boardtype { struct diosubd_data sdi[MAX_DI_SUBDEVS]; /* DI chans */ struct diosubd_data sdo[MAX_DO_SUBDEVS]; /* DO chans */ struct diosubd_data sdio[MAX_DIO_SUBDEVG]; /* DIO 8255 chans */ - struct diosubd_data boardid; /* card supports board ID switch */ + unsigned long id_reg; unsigned long timer_regbase; unsigned int is_16bit:1; }; @@ -152,21 +146,21 @@ static const struct dio_boardtype boardtypes[] = { .sdi[1] = { 16, PCI1730_IDI, }, .sdo[0] = { 16, PCI1730_DO, }, .sdo[1] = { 16, PCI1730_IDO, }, - .boardid = { 4, PCI173x_BOARDID, }, + .id_reg = 0x04, }, [TYPE_PCI1733] = { .name = "pci1733", .cardtype = TYPE_PCI1733, .nsubdevs = 2, .sdi[1] = { 32, PCI1733_IDI, }, - .boardid = { 4, PCI173x_BOARDID, }, + .id_reg = 0x04, }, [TYPE_PCI1734] = { .name = "pci1734", .cardtype = TYPE_PCI1734, .nsubdevs = 2, .sdo[1] = { 32, PCI1734_IDO, }, - .boardid = { 4, PCI173x_BOARDID, }, + .id_reg = 0x04, }, [TYPE_PCI1735] = { .name = "pci1735", @@ -174,7 +168,7 @@ static const struct dio_boardtype boardtypes[] = { .nsubdevs = 4, .sdi[0] = { 32, PCI1735_DI, }, .sdo[0] = { 32, PCI1735_DO, }, - .boardid = { 4, PCI1735_BOARDID, }, + .id_reg = 0x08, .timer_regbase = PCI1735_C8254, }, [TYPE_PCI1736] = { @@ -183,13 +177,14 @@ static const struct dio_boardtype boardtypes[] = { .nsubdevs = 3, .sdi[1] = { 16, PCI1736_IDI, }, .sdo[1] = { 16, PCI1736_IDO, }, - .boardid = { 4, PCI1736_BOARDID, }, + .id_reg = 0x04, }, [TYPE_PCI1739] = { .name = "pci1739", .cardtype = TYPE_PCI1739, - .nsubdevs = 2, + .nsubdevs = 3, .sdio[0] = { 2, PCI1739_DIO, }, + .id_reg = 0x08, }, [TYPE_PCI1750] = { .name = "pci1750", @@ -211,7 +206,7 @@ static const struct dio_boardtype boardtypes[] = { .nsubdevs = 3, .sdo[0] = { 32, PCI1752_IDO, }, .sdo[1] = { 32, PCI1752_IDO2, }, - .boardid = { 4, PCI175x_BOARDID, }, + .id_reg = 0x10, .is_16bit = 1, }, [TYPE_PCI1753] = { @@ -233,7 +228,7 @@ static const struct dio_boardtype boardtypes[] = { .nsubdevs = 3, .sdi[0] = { 32, PCI1754_IDI, }, .sdi[1] = { 32, PCI1754_IDI2, }, - .boardid = { 4, PCI175x_BOARDID, }, + .id_reg = 0x10, .is_16bit = 1, }, [TYPE_PCI1756] = { @@ -242,7 +237,7 @@ static const struct dio_boardtype boardtypes[] = { .nsubdevs = 3, .sdi[1] = { 32, PCI1756_IDI, }, .sdo[1] = { 32, PCI1756_IDO, }, - .boardid = { 4, PCI175x_BOARDID, }, + .id_reg = 0x10, .is_16bit = 1, }, [TYPE_PCI1762] = { @@ -251,7 +246,7 @@ static const struct dio_boardtype boardtypes[] = { .nsubdevs = 3, .sdi[1] = { 16, PCI1762_IDI, }, .sdo[1] = { 16, PCI1762_RO, }, - .boardid = { 4, PCI1762_BOARDID, }, + .id_reg = 0x04, .is_16bit = 1, }, }; @@ -536,17 +531,16 @@ static int pci_dio_auto_attach(struct comedi_device *dev, } } - d = &board->boardid; - if (d->chans) { + if (board->id_reg) { s = &dev->subdevices[subdev++]; s->type = COMEDI_SUBD_DI; s->subdev_flags = SDF_READABLE | SDF_INTERNAL; - s->n_chan = d->chans; + s->n_chan = 4; s->maxdata = 1; s->range_table = &range_digital; s->insn_bits = board->is_16bit ? pci_dio_insn_bits_di_w : pci_dio_insn_bits_di_b; - s->private = (void *)d->addr; + s->private = (void *)board->id_reg; } if (board->timer_regbase) { -- 2.20.1