From 4cbbacb285d82e49c4919e678417e708e5e38451 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Thu, 13 Mar 2014 14:16:29 -0700 Subject: [PATCH] staging: comedi: gsc_hpdi: rename 'hpdi_iobase' in private data This member in the private data holds the ioremaped PCI BAR2 address which is the primary base address for the boards registers. For aesthetics, rename this member simply 'mmio'. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/gsc_hpdi.c | 46 +++++++++++------------ 1 file changed, 22 insertions(+), 24 deletions(-) diff --git a/drivers/staging/comedi/drivers/gsc_hpdi.c b/drivers/staging/comedi/drivers/gsc_hpdi.c index da9a00258d77..0770ad17d135 100644 --- a/drivers/staging/comedi/drivers/gsc_hpdi.c +++ b/drivers/staging/comedi/drivers/gsc_hpdi.c @@ -185,7 +185,7 @@ static const struct hpdi_board hpdi_boards[] = { struct hpdi_private { void __iomem *plx9080_mmio; - void __iomem *hpdi_iobase; + void __iomem *mmio; uint32_t *dio_buffer[NUM_DMA_BUFFERS]; /* dma buffers */ /* physical addresses of dma buffers */ dma_addr_t dio_buffer_phys_addr[NUM_DMA_BUFFERS]; @@ -264,13 +264,12 @@ static irqreturn_t gsc_hpdi_interrupt(int irq, void *d) if ((plx_status & (ICS_DMA0_A | ICS_DMA1_A | ICS_LIA)) == 0) return IRQ_NONE; - hpdi_intr_status = readl(devpriv->hpdi_iobase + INTERRUPT_STATUS_REG); - hpdi_board_status = readl(devpriv->hpdi_iobase + BOARD_STATUS_REG); + hpdi_intr_status = readl(devpriv->mmio + INTERRUPT_STATUS_REG); + hpdi_board_status = readl(devpriv->mmio + BOARD_STATUS_REG); + + if (hpdi_intr_status) + writel(hpdi_intr_status, devpriv->mmio + INTERRUPT_STATUS_REG); - if (hpdi_intr_status) { - writel(hpdi_intr_status, - devpriv->hpdi_iobase + INTERRUPT_STATUS_REG); - } /* spin lock makes sure no one else changes plx dma control reg */ spin_lock_irqsave(&dev->spinlock, flags); dma0_status = readb(devpriv->plx9080_mmio + PLX_DMA0_CS_REG); @@ -334,8 +333,8 @@ static int gsc_hpdi_cancel(struct comedi_device *dev, { struct hpdi_private *devpriv = dev->private; - writel(0, devpriv->hpdi_iobase + BOARD_CONTROL_REG); - writel(0, devpriv->hpdi_iobase + INTERRUPT_CONTROL_REG); + writel(0, devpriv->mmio + BOARD_CONTROL_REG); + writel(0, devpriv->mmio + INTERRUPT_CONTROL_REG); gsc_hpdi_abort_dma(dev, 0); @@ -354,7 +353,7 @@ static int gsc_hpdi_cmd(struct comedi_device *dev, if (s->io_bits) return -EINVAL; - writel(RX_FIFO_RESET_BIT, devpriv->hpdi_iobase + BOARD_CONTROL_REG); + writel(RX_FIFO_RESET_BIT, devpriv->mmio + BOARD_CONTROL_REG); gsc_hpdi_abort_dma(dev, 0); @@ -388,13 +387,12 @@ static int gsc_hpdi_cmd(struct comedi_device *dev, /* clear over/under run status flags */ writel(RX_UNDERRUN_BIT | RX_OVERRUN_BIT, - devpriv->hpdi_iobase + BOARD_STATUS_REG); + devpriv->mmio + BOARD_STATUS_REG); /* enable interrupts */ - writel(intr_bit(RX_FULL_INTR), - devpriv->hpdi_iobase + INTERRUPT_CONTROL_REG); + writel(intr_bit(RX_FULL_INTR), devpriv->mmio + INTERRUPT_CONTROL_REG); - writel(RX_ENABLE_BIT, devpriv->hpdi_iobase + BOARD_CONTROL_REG); + writel(RX_ENABLE_BIT, devpriv->mmio + BOARD_CONTROL_REG); return 0; } @@ -543,20 +541,20 @@ static int gsc_hpdi_init(struct comedi_device *dev) struct hpdi_private *devpriv = dev->private; uint32_t plx_intcsr_bits; - writel(BOARD_RESET_BIT, devpriv->hpdi_iobase + BOARD_CONTROL_REG); + writel(BOARD_RESET_BIT, devpriv->mmio + BOARD_CONTROL_REG); udelay(10); writel(almost_empty_bits(32) | almost_full_bits(32), - devpriv->hpdi_iobase + RX_PROG_ALMOST_REG); + devpriv->mmio + RX_PROG_ALMOST_REG); writel(almost_empty_bits(32) | almost_full_bits(32), - devpriv->hpdi_iobase + TX_PROG_ALMOST_REG); + devpriv->mmio + TX_PROG_ALMOST_REG); - devpriv->tx_fifo_size = fifo_size(readl(devpriv->hpdi_iobase + + devpriv->tx_fifo_size = fifo_size(readl(devpriv->mmio + TX_FIFO_SIZE_REG)); - devpriv->rx_fifo_size = fifo_size(readl(devpriv->hpdi_iobase + + devpriv->rx_fifo_size = fifo_size(readl(devpriv->mmio + RX_FIFO_SIZE_REG)); - writel(0, devpriv->hpdi_iobase + INTERRUPT_CONTROL_REG); + writel(0, devpriv->mmio + INTERRUPT_CONTROL_REG); /* enable interrupts */ plx_intcsr_bits = @@ -647,8 +645,8 @@ static int gsc_hpdi_auto_attach(struct comedi_device *dev, pci_set_master(pcidev); devpriv->plx9080_mmio = pci_ioremap_bar(pcidev, 0); - devpriv->hpdi_iobase = pci_ioremap_bar(pcidev, 2); - if (!devpriv->plx9080_mmio || !devpriv->hpdi_iobase) { + devpriv->mmio = pci_ioremap_bar(pcidev, 2); + if (!devpriv->plx9080_mmio || !devpriv->mmio) { dev_warn(dev->class_dev, "failed to remap io memory\n"); return -ENOMEM; } @@ -722,8 +720,8 @@ static void gsc_hpdi_detach(struct comedi_device *dev) writel(0, devpriv->plx9080_mmio + PLX_INTRCS_REG); iounmap(devpriv->plx9080_mmio); } - if (devpriv->hpdi_iobase) - iounmap(devpriv->hpdi_iobase); + if (devpriv->mmio) + iounmap(devpriv->mmio); /* free pci dma buffers */ for (i = 0; i < NUM_DMA_BUFFERS; i++) { if (devpriv->dio_buffer[i]) -- 2.20.1