From: H Hartley Sweeten Date: Fri, 18 Jan 2013 00:41:25 +0000 (-0700) Subject: staging: comedi: addi_apci_2032: use addi_watchdog module X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=5b62fe2a03e9d25569c0fa0b81b96ac6f0c9b5fd;p=deliverable%2Flinux.git staging: comedi: addi_apci_2032: use addi_watchdog module Use the addi_watchdog module to provide support for the watchdog subdevice. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig index 8f2bef3434bd..39cf735cbb54 100644 --- a/drivers/staging/comedi/Kconfig +++ b/drivers/staging/comedi/Kconfig @@ -626,6 +626,7 @@ config COMEDI_ADDI_APCI_16XX config COMEDI_ADDI_APCI_2032 tristate "ADDI-DATA APCI_2032 support" + select COMEDI_ADDI_WATCHDOG ---help--- Enable support for ADDI-DATA APCI_2032 cards diff --git a/drivers/staging/comedi/drivers/addi_apci_2032.c b/drivers/staging/comedi/drivers/addi_apci_2032.c index 31e1259f8822..4660ec730266 100644 --- a/drivers/staging/comedi/drivers/addi_apci_2032.c +++ b/drivers/staging/comedi/drivers/addi_apci_2032.c @@ -30,6 +30,7 @@ */ #include "../comedidev.h" +#include "addi_watchdog.h" #include "comedi_fc.h" /* @@ -45,18 +46,6 @@ #define APCI2032_STATUS_REG 0x0c #define APCI2032_STATUS_IRQ (1 << 0) #define APCI2032_WDOG_REG 0x10 -#define APCI2032_WDOG_RELOAD_REG 0x14 -#define APCI2032_WDOG_TIMEBASE 0x18 -#define APCI2032_WDOG_CTRL_REG 0x1c -#define APCI2032_WDOG_CTRL_ENABLE (1 << 0) -#define APCI2032_WDOG_CTRL_SW_TRIG (1 << 9) -#define APCI2032_WDOG_STATUS_REG 0x20 -#define APCI2032_WDOG_STATUS_ENABLED (1 << 0) -#define APCI2032_WDOG_STATUS_SW_TRIG (1 << 1) - -struct apci2032_private { - unsigned int wdog_ctrl; -}; struct apci2032_int_private { spinlock_t spinlock; @@ -86,81 +75,6 @@ static int apci2032_do_insn_bits(struct comedi_device *dev, return insn->n; } -/* - * The watchdog subdevice is configured with two INSN_CONFIG instructions: - * - * Enable the watchdog and set the reload timeout: - * data[0] = INSN_CONFIG_ARM - * data[1] = timeout reload value - * - * Disable the watchdog: - * data[0] = INSN_CONFIG_DISARM - */ -static int apci2032_wdog_insn_config(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - struct apci2032_private *devpriv = dev->private; - unsigned int reload; - - switch (data[0]) { - case INSN_CONFIG_ARM: - devpriv->wdog_ctrl = APCI2032_WDOG_CTRL_ENABLE; - reload = data[1] & s->maxdata; - outw(reload, dev->iobase + APCI2032_WDOG_RELOAD_REG); - - /* Time base is 20ms, let the user know the timeout */ - dev_info(dev->class_dev, "watchdog enabled, timeout:%dms\n", - 20 * reload + 20); - break; - case INSN_CONFIG_DISARM: - devpriv->wdog_ctrl = 0; - break; - default: - return -EINVAL; - } - - outw(devpriv->wdog_ctrl, dev->iobase + APCI2032_WDOG_CTRL_REG); - - return insn->n; -} - -static int apci2032_wdog_insn_write(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - struct apci2032_private *devpriv = dev->private; - int i; - - if (devpriv->wdog_ctrl == 0) { - dev_warn(dev->class_dev, "watchdog is disabled\n"); - return -EINVAL; - } - - /* "ping" the watchdog */ - for (i = 0; i < insn->n; i++) { - outw(devpriv->wdog_ctrl | APCI2032_WDOG_CTRL_SW_TRIG, - dev->iobase + APCI2032_WDOG_CTRL_REG); - } - - return insn->n; -} - -static int apci2032_wdog_insn_read(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - int i; - - for (i = 0; i < insn->n; i++) - data[i] = inl(dev->iobase + APCI2032_WDOG_STATUS_REG); - - return insn->n; -} - static int apci2032_int_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, @@ -357,8 +271,8 @@ static int apci2032_reset(struct comedi_device *dev) { outl(0x0, dev->iobase + APCI2032_DO_REG); outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG); - outl(0x0, dev->iobase + APCI2032_WDOG_CTRL_REG); - outl(0x0, dev->iobase + APCI2032_WDOG_RELOAD_REG); + + addi_watchdog_reset(dev->iobase + APCI2032_WDOG_REG); return 0; } @@ -367,17 +281,11 @@ static int apci2032_auto_attach(struct comedi_device *dev, unsigned long context_unused) { struct pci_dev *pcidev = comedi_to_pci_dev(dev); - struct apci2032_private *devpriv; struct comedi_subdevice *s; int ret; dev->board_name = dev->driver->driver_name; - devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); - if (!devpriv) - return -ENOMEM; - dev->private = devpriv; - ret = comedi_pci_enable(pcidev, dev->board_name); if (ret) return ret; @@ -406,13 +314,9 @@ static int apci2032_auto_attach(struct comedi_device *dev, /* Initialize the watchdog subdevice */ s = &dev->subdevices[1]; - s->type = COMEDI_SUBD_TIMER; - s->subdev_flags = SDF_WRITEABLE; - s->n_chan = 1; - s->maxdata = 0xff; - s->insn_write = apci2032_wdog_insn_write; - s->insn_read = apci2032_wdog_insn_read; - s->insn_config = apci2032_wdog_insn_config; + ret = addi_watchdog_init(s, dev->iobase + APCI2032_WDOG_REG); + if (ret) + return ret; /* Initialize the interrupt subdevice */ s = &dev->subdevices[2]; @@ -451,6 +355,8 @@ static void apci2032_detach(struct comedi_device *dev) free_irq(dev->irq, dev); if (dev->read_subdev) kfree(dev->read_subdev->private); + if (dev->subdevices) + addi_watchdog_cleanup(&dev->subdevices[1]); if (pcidev) { if (dev->iobase) comedi_pci_disable(pcidev);