From: H Hartley Sweeten Date: Mon, 20 Jun 2016 18:12:32 +0000 (-0700) Subject: staging: comedi: addi_apci_3501: remove timer/counter subdevice support X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a6672530f6fc57e182a6f66d2017589b5b056994;p=linux-beck.git staging: comedi: addi_apci_3501: remove timer/counter subdevice support This driver is for a simple 4/8 channel analog output board with 2 isolated digital inputs and 2 isolated digital outputs. Support for these subdevices is provided by the driver. The boards also has a watchdog timer that can be used to reset the analog outputs. It can also be used as a general purpose 12-bit timer when the watchdog function is not necessary. The current support code for this subdevice is broken. It does not follow the comedi API and requires some out-of-tree patches in order to even work. Remove the subdevice support. If a proper register map can be located for this board we can add support back later. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3501.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3501.c deleted file mode 100644 index 375707497896..000000000000 --- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3501.c +++ /dev/null @@ -1,141 +0,0 @@ -/* Watchdog Related Defines */ - -#define ADDIDATA_TIMER 0 -#define ADDIDATA_WATCHDOG 2 - -/* - * (*insn_config) for the timer subdevice - * - * Configures The Timer, Counter or Watchdog - * Data Pointer contains configuration parameters as below - * data[0] : 0 Configure As Timer - * 1 Configure As Counter - * 2 Configure As Watchdog - * data[1] : 1 Enable Interrupt - * 0 Disable Interrupt - * data[2] : Time Unit - * data[3] : Reload Value - */ -static int apci3501_config_insn_timer(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - struct apci3501_private *devpriv = dev->private; - unsigned int ctrl; - - if (data[0] != ADDIDATA_WATCHDOG && - data[0] != ADDIDATA_TIMER) - return -EINVAL; - - devpriv->tsk_Current = current; - - devpriv->timer_mode = data[0]; - - /* first, disable the watchdog or stop the timer */ - if (devpriv->timer_mode == ADDIDATA_WATCHDOG) { - ctrl = 0; - } else { - ctrl = inl(devpriv->tcw + ADDI_TCW_CTRL_REG); - ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG | - ADDI_TCW_CTRL_ENA); - } - outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG); - - /* enable/disable the timer interrupt */ - ctrl = (data[1] == 1) ? ADDI_TCW_CTRL_IRQ_ENA : 0; - outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG); - - outl(data[2], devpriv->tcw + ADDI_TCW_TIMEBASE_REG); - outl(data[3], devpriv->tcw + ADDI_TCW_RELOAD_REG); - - ctrl = inl(devpriv->tcw + ADDI_TCW_CTRL_REG); - if (devpriv->timer_mode == ADDIDATA_WATCHDOG) { - /* Set the mode (e2->e0) NOTE: this doesn't look correct */ - ctrl |= ~(ADDI_TCW_CTRL_CNT_UP | ADDI_TCW_CTRL_EXT_CLK_MASK | - ADDI_TCW_CTRL_MODE_MASK | ADDI_TCW_CTRL_GATE | - ADDI_TCW_CTRL_TRIG | ADDI_TCW_CTRL_TIMER_ENA | - ADDI_TCW_CTRL_RESET_ENA | ADDI_TCW_CTRL_WARN_ENA | - ADDI_TCW_CTRL_IRQ_ENA | ADDI_TCW_CTRL_ENA); - } else { - /* mode 2 */ - ctrl &= ~(ADDI_TCW_CTRL_CNTR_ENA | ADDI_TCW_CTRL_MODE_MASK | - ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG | - ADDI_TCW_CTRL_TIMER_ENA | ADDI_TCW_CTRL_RESET_ENA | - ADDI_TCW_CTRL_WARN_ENA | ADDI_TCW_CTRL_ENA); - ctrl |= ADDI_TCW_CTRL_MODE(2) | ADDI_TCW_CTRL_TIMER_ENA; - } - outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG); - - return insn->n; -} - -/* - * (*insn_write) for the timer subdevice - * - * Start / Stop The Selected Timer , Counter or Watchdog - * Data Pointer contains configuration parameters as below - * data[0] : 0 Timer - * 1 Counter - * 2 Watchdog - * data[1] : 1 Start - * 0 Stop - * 2 Trigger - */ -static int apci3501_write_insn_timer(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - struct apci3501_private *devpriv = dev->private; - unsigned int ctrl; - - if (devpriv->timer_mode == ADDIDATA_WATCHDOG || - devpriv->timer_mode == ADDIDATA_TIMER) { - ctrl = inl(devpriv->tcw + ADDI_TCW_CTRL_REG); - ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG); - - if (data[1] == 1) { /* enable */ - ctrl |= ADDI_TCW_CTRL_ENA; - } else if (data[1] == 0) { /* stop */ - if (devpriv->timer_mode == ADDIDATA_WATCHDOG) - ctrl = 0; - else - ctrl &= ~ADDI_TCW_CTRL_ENA; - } else if (data[1] == 2) { /* trigger */ - ctrl |= ADDI_TCW_CTRL_TRIG; - } - outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG); - } - - inl(devpriv->tcw + ADDI_TCW_STATUS_REG); - return insn->n; -} - -/* - * (*insn_read) for the timer subdevice - * - * Read The Selected Timer, Counter or Watchdog - * Data Pointer contains configuration parameters as below - * data[0] : 0 Timer - * 1 Counter - * 2 Watchdog - * data[1] : Timer Counter Watchdog Number - */ -static int apci3501_read_insn_timer(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - struct apci3501_private *devpriv = dev->private; - - if (devpriv->timer_mode != ADDIDATA_TIMER && - devpriv->timer_mode != ADDIDATA_WATCHDOG) - return -EINVAL; - - data[0] = inl(devpriv->tcw + ADDI_TCW_STATUS_REG) & - ADDI_TCW_STATUS_OVERFLOW; - data[1] = inl(devpriv->tcw + ADDI_TCW_VAL_REG); - - return insn->n; -} diff --git a/drivers/staging/comedi/drivers/addi_apci_3501.c b/drivers/staging/comedi/drivers/addi_apci_3501.c index 40ff91411139..fc03f4a1e4a0 100644 --- a/drivers/staging/comedi/drivers/addi_apci_3501.c +++ b/drivers/staging/comedi/drivers/addi_apci_3501.c @@ -23,11 +23,8 @@ */ #include -#include -#include #include "../comedi_pci.h" -#include "addi_tcw.h" #include "amcc_s5933.h" /* @@ -67,8 +64,6 @@ struct apci3501_private { unsigned long amcc; - unsigned long tcw; - struct task_struct *tsk_Current; unsigned char timer_mode; }; @@ -139,8 +134,6 @@ static int apci3501_ao_insn_write(struct comedi_device *dev, return insn->n; } -#include "addi-data/hwdrv_apci3501.c" - static int apci3501_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, @@ -253,37 +246,6 @@ static int apci3501_eeprom_insn_read(struct comedi_device *dev, return insn->n; } -static irqreturn_t apci3501_interrupt(int irq, void *d) -{ - struct comedi_device *dev = d; - struct apci3501_private *devpriv = dev->private; - unsigned int status; - unsigned int ctrl; - - /* Disable Interrupt */ - ctrl = inl(devpriv->tcw + ADDI_TCW_CTRL_REG); - ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG | - ADDI_TCW_CTRL_IRQ_ENA); - outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG); - - status = inl(devpriv->tcw + ADDI_TCW_IRQ_REG); - if (!(status & ADDI_TCW_IRQ)) { - dev_err(dev->class_dev, "IRQ from unknown source\n"); - return IRQ_NONE; - } - - /* Enable Interrupt Send a signal to from kernel to user space */ - send_sig(SIGIO, devpriv->tsk_Current, 0); - ctrl = inl(devpriv->tcw + ADDI_TCW_CTRL_REG); - ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG | - ADDI_TCW_CTRL_IRQ_ENA); - ctrl |= ADDI_TCW_CTRL_IRQ_ENA; - outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG); - inl(devpriv->tcw + ADDI_TCW_STATUS_REG); - - return IRQ_HANDLED; -} - static int apci3501_reset(struct comedi_device *dev) { unsigned int val; @@ -333,17 +295,9 @@ static int apci3501_auto_attach(struct comedi_device *dev, devpriv->amcc = pci_resource_start(pcidev, 0); dev->iobase = pci_resource_start(pcidev, 1); - devpriv->tcw = dev->iobase + APCI3501_TIMER_BASE; ao_n_chan = apci3501_eeprom_get_ao_n_chan(dev); - if (pcidev->irq > 0) { - ret = request_irq(pcidev->irq, apci3501_interrupt, IRQF_SHARED, - dev->board_name, dev); - if (ret == 0) - dev->irq = pcidev->irq; - } - ret = comedi_alloc_subdevices(dev, 5); if (ret) return ret; @@ -383,17 +337,9 @@ static int apci3501_auto_attach(struct comedi_device *dev, s->range_table = &range_digital; s->insn_bits = apci3501_do_insn_bits; - /* Initialize the timer/watchdog subdevice */ + /* Timer/Watchdog subdevice */ s = &dev->subdevices[3]; - s->type = COMEDI_SUBD_TIMER; - s->subdev_flags = SDF_WRITABLE; - s->n_chan = 1; - s->maxdata = 0; - s->len_chanlist = 1; - s->range_table = &range_digital; - s->insn_write = apci3501_write_insn_timer; - s->insn_read = apci3501_read_insn_timer; - s->insn_config = apci3501_config_insn_timer; + s->type = COMEDI_SUBD_UNUSED; /* Initialize the eeprom subdevice */ s = &dev->subdevices[4];