From: H Hartley Sweeten Date: Tue, 29 Jul 2014 22:01:43 +0000 (-0700) Subject: staging: comedi: ni_labpc: use the comedi_device 'mmio' member X-Git-Tag: firefly_0821_release~176^2~3491^2~99 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=70f72867147b18fc36d2717cda6ddbaf4f71cf77;p=firefly-linux-kernel-4.4.55.git staging: comedi: ni_labpc: use the comedi_device 'mmio' member Use the new 'mmio' member in the comedi_device for the ioremap'ed base address. Only the ni_labpc_pci module does the ioremap, its also the only module that sets the 'has_mmio' member in the boardinfo. Remove this member from the boardinfo and use dev->mmio to determine if the I/O is memory mapped. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/ni_labpc.c b/drivers/staging/comedi/drivers/ni_labpc.c index 7f5072bae493..126d65cb39f2 100644 --- a/drivers/staging/comedi/drivers/ni_labpc.c +++ b/drivers/staging/comedi/drivers/ni_labpc.c @@ -141,17 +141,13 @@ static void labpc_outb(struct comedi_device *dev, static unsigned int labpc_readb(struct comedi_device *dev, unsigned long reg) { - void __iomem *mmio = (void __iomem *)dev->iobase; - - return readb(mmio + reg); + return readb(dev->mmio + reg); } static void labpc_writeb(struct comedi_device *dev, unsigned int byte, unsigned long reg) { - void __iomem *mmio = (void __iomem *)dev->iobase; - - writeb(byte, mmio + reg); + writeb(byte, dev->mmio + reg); } #if IS_ENABLED(CONFIG_COMEDI_NI_LABPC_ISA) @@ -181,13 +177,9 @@ static void labpc_counter_load(struct comedi_device *dev, unsigned int count, unsigned int mode) { - const struct labpc_boardinfo *board = comedi_board(dev); - - if (board->has_mmio) { - void __iomem *mmio = (void __iomem *)dev->iobase; - - i8254_mm_set_mode(mmio + reg, 0, counter_number, mode); - i8254_mm_write(mmio + reg, 0, counter_number, count); + if (dev->mmio) { + i8254_mm_set_mode(dev->mmio + reg, 0, counter_number, mode); + i8254_mm_write(dev->mmio + reg, 0, counter_number, count); } else { i8254_set_mode(dev->iobase + reg, 0, counter_number, mode); i8254_write(dev->iobase + reg, 0, counter_number, count); @@ -199,15 +191,10 @@ static void labpc_counter_set_mode(struct comedi_device *dev, unsigned int counter_number, unsigned int mode) { - const struct labpc_boardinfo *board = comedi_board(dev); - - if (board->has_mmio) { - void __iomem *mmio = (void __iomem *)dev->iobase; - - i8254_mm_set_mode(mmio + reg, 0, counter_number, mode); - } else { + if (dev->mmio) + i8254_mm_set_mode(dev->mmio + reg, 0, counter_number, mode); + else i8254_set_mode(dev->iobase + reg, 0, counter_number, mode); - } } static int labpc_cancel(struct comedi_device *dev, struct comedi_subdevice *s) @@ -1051,14 +1038,13 @@ static int labpc_ao_insn_read(struct comedi_device *dev, static int labpc_8255_mmio(int dir, int port, int data, unsigned long arg) { struct comedi_device *dev = (struct comedi_device *)arg; - void __iomem *mmio = (void __iomem *)dev->iobase + DIO_BASE_REG; if (dir) { - writeb(data, mmio + port); + writeb(data, dev->mmio + DIO_BASE_REG + port); return 0; } - return readb(mmio + port); + return readb(dev->mmio + DIO_BASE_REG + port); } /* lowlevel write to eeprom/dac */ @@ -1342,7 +1328,7 @@ int labpc_common_attach(struct comedi_device *dev, int ret; int i; - if (board->has_mmio) { + if (dev->mmio) { devpriv->read_byte = labpc_readb; devpriv->write_byte = labpc_writeb; } else { @@ -1416,7 +1402,7 @@ int labpc_common_attach(struct comedi_device *dev, /* 8255 dio */ s = &dev->subdevices[2]; - if (board->has_mmio) { + if (dev->mmio) { ret = subdev_8255_init(dev, s, labpc_8255_mmio, (unsigned long)dev); } else { diff --git a/drivers/staging/comedi/drivers/ni_labpc.h b/drivers/staging/comedi/drivers/ni_labpc.h index 848725696f2f..f6e5cd15a409 100644 --- a/drivers/staging/comedi/drivers/ni_labpc.h +++ b/drivers/staging/comedi/drivers/ni_labpc.h @@ -32,7 +32,6 @@ struct labpc_boardinfo { unsigned ai_scan_up:1; /* can auto scan up in ai channels */ unsigned has_ao:1; /* has analog outputs */ unsigned is_labpc1200:1; /* has extra regs compared to pc+ */ - unsigned has_mmio:1; /* uses memory mapped io */ }; struct labpc_private { diff --git a/drivers/staging/comedi/drivers/ni_labpc_pci.c b/drivers/staging/comedi/drivers/ni_labpc_pci.c index 5b59be3350ad..65984ea0a3ee 100644 --- a/drivers/staging/comedi/drivers/ni_labpc_pci.c +++ b/drivers/staging/comedi/drivers/ni_labpc_pci.c @@ -48,7 +48,6 @@ static const struct labpc_boardinfo labpc_pci_boards[] = { .ai_scan_up = 1, .has_ao = 1, .is_labpc1200 = 1, - .has_mmio = 1, }, }; @@ -81,7 +80,6 @@ static int labpc_pci_auto_attach(struct comedi_device *dev, struct pci_dev *pcidev = comedi_to_pci_dev(dev); const struct labpc_boardinfo *board = NULL; struct labpc_private *devpriv; - void __iomem *mmio; int ret; if (context < ARRAY_SIZE(labpc_pci_boards)) @@ -99,10 +97,9 @@ static int labpc_pci_auto_attach(struct comedi_device *dev, if (ret) return ret; - mmio = pci_ioremap_bar(pcidev, 1); - if (!mmio) + dev->mmio = pci_ioremap_bar(pcidev, 1); + if (!dev->mmio) return -ENOMEM; - dev->iobase = (unsigned long)mmio; devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); if (!devpriv) @@ -113,8 +110,8 @@ static int labpc_pci_auto_attach(struct comedi_device *dev, static void labpc_pci_detach(struct comedi_device *dev) { - if (dev->iobase) - iounmap((void __iomem *)dev->iobase); + if (dev->mmio) + iounmap(dev->mmio); if (dev->irq) free_irq(dev->irq, dev); comedi_pci_disable(dev);