From: H Hartley Sweeten Date: Tue, 6 Nov 2012 17:07:04 +0000 (-0700) Subject: staging: comedi: addi_apci_2200: fix digital output 'insn_bits' function X-Git-Tag: firefly_0821_release~3680^2~1519^2~553 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8ded30de45e1ea5979396eaa8241e7ee1e57ff3e;p=firefly-linux-kernel-4.4.55.git staging: comedi: addi_apci_2200: fix digital output 'insn_bits' function This driver does not follow the comedi API. The digital output 'insn_bits' function is passed a mask value in data[0] indicating which output bits in data[1] are changing. The function is then supposed to update the outputs accordingly and then return the current state of the outputs in data[1]. Currently this driver uses the 'insn_write' function to update either a single or all the output channels. And it uses the 'insn_bits' function to read either a single or all the output channel states. Fix the 'insn_bits' function so it works like the comedi core expects. The core can then use the function to emulate the 'insn_read' and 'insn_write' functions for individual channels. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci2200.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci2200.c index 7baccf7a9deb..1396696a3050 100644 --- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci2200.c +++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci2200.c @@ -111,231 +111,25 @@ static int i_APCI2200_ConfigDigitalOutput(struct comedi_device *dev, return insn->n; } -/* -+----------------------------------------------------------------------------+ -| Function Name : int i_APCI2200_WriteDigitalOutput | -| (struct comedi_device *dev,struct comedi_subdevice *s,struct comedi_insn *insn, -| unsigned int *data) | -+----------------------------------------------------------------------------+ -| Task : Writes port value To the selected port | -+----------------------------------------------------------------------------+ -| Input Parameters : struct comedi_device *dev : Driver handle | -| struct comedi_subdevice *s, :pointer to subdevice structure -| struct comedi_insn *insn :pointer to insn structure | -| unsigned int *data : Data Pointer to read status | -+----------------------------------------------------------------------------+ -| Output Parameters : -- | -+----------------------------------------------------------------------------+ -| Return Value : TRUE : No error occur | -| : FALSE : Error occur. Return the error | -| | -+----------------------------------------------------------------------------+ -*/ - -static int i_APCI2200_WriteDigitalOutput(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) +static int apci2200_do_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) { struct addi_private *devpriv = dev->private; - unsigned int ui_Temp, ui_Temp1; - unsigned int ui_NoOfChannel = CR_CHAN(insn->chanspec); /* get the channel */ + unsigned int mask = data[0]; + unsigned int bits = data[1]; - if (devpriv->b_OutputMemoryStatus) { - ui_Temp = inw(devpriv->iobase + APCI2200_DIGITAL_OP); + s->state = inw(devpriv->iobase + APCI2200_DIGITAL_OP); + if (mask) { + s->state &= ~mask; + s->state |= (bits & mask); - } /* if(devpriv->b_OutputMemoryStatus ) */ - else { - ui_Temp = 0; - } /* if(devpriv->b_OutputMemoryStatus ) */ - if (data[3] == 0) { - if (data[1] == 0) { - data[0] = (data[0] << ui_NoOfChannel) | ui_Temp; - outw(data[0], devpriv->iobase + APCI2200_DIGITAL_OP); - } /* if(data[1]==0) */ - else { - if (data[1] == 1) { - switch (ui_NoOfChannel) { - - case 2: - data[0] = - (data[0] << (2 * - data[2])) | ui_Temp; - break; - - case 4: - data[0] = - (data[0] << (4 * - data[2])) | ui_Temp; - break; - - case 8: - data[0] = - (data[0] << (8 * - data[2])) | ui_Temp; - break; - case 15: - data[0] = data[0] | ui_Temp; - break; - default: - comedi_error(dev, " chan spec wrong"); - return -EINVAL; /* "sorry channel spec wrong " */ - - } /* switch(ui_NoOfChannels) */ - - outw(data[0], - devpriv->iobase + APCI2200_DIGITAL_OP); - } /* if(data[1]==1) */ - else { - printk("\nSpecified channel not supported\n"); - } /* else if(data[1]==1) */ - } /* elseif(data[1]==0) */ - } /* if(data[3]==0) */ - else { - if (data[3] == 1) { - if (data[1] == 0) { - data[0] = ~data[0] & 0x1; - ui_Temp1 = 1; - ui_Temp1 = ui_Temp1 << ui_NoOfChannel; - ui_Temp = ui_Temp | ui_Temp1; - data[0] = (data[0] << ui_NoOfChannel) ^ 0xffff; - data[0] = data[0] & ui_Temp; - outw(data[0], - devpriv->iobase + APCI2200_DIGITAL_OP); - } /* if(data[1]==0) */ - else { - if (data[1] == 1) { - switch (ui_NoOfChannel) { - - case 2: - data[0] = ~data[0] & 0x3; - ui_Temp1 = 3; - ui_Temp1 = - ui_Temp1 << 2 * data[2]; - ui_Temp = ui_Temp | ui_Temp1; - data[0] = - ((data[0] << (2 * - data - [2])) ^ - 0xffff) & ui_Temp; - break; - - case 4: - data[0] = ~data[0] & 0xf; - ui_Temp1 = 15; - ui_Temp1 = - ui_Temp1 << 4 * data[2]; - ui_Temp = ui_Temp | ui_Temp1; - data[0] = - ((data[0] << (4 * - data - [2])) ^ - 0xffff) & ui_Temp; - break; - - case 8: - data[0] = ~data[0] & 0xff; - ui_Temp1 = 255; - ui_Temp1 = - ui_Temp1 << 8 * data[2]; - ui_Temp = ui_Temp | ui_Temp1; - data[0] = - ((data[0] << (8 * - data - [2])) ^ - 0xffff) & ui_Temp; - break; - case 15: - break; - - default: - comedi_error(dev, - " chan spec wrong"); - return -EINVAL; /* "sorry channel spec wrong " */ - - } /* switch(ui_NoOfChannels) */ - - outw(data[0], - devpriv->iobase + - APCI2200_DIGITAL_OP); - } /* if(data[1]==1) */ - else { - printk("\nSpecified channel not supported\n"); - } /* else if(data[1]==1) */ - } /* elseif(data[1]==0) */ - } /* if(data[3]==1); */ - else { - printk("\nSpecified functionality does not exist\n"); - return -EINVAL; - } /* if else data[3]==1) */ - } /* if else data[3]==0) */ - return insn->n; -} + outw(s->state, devpriv->iobase + APCI2200_DIGITAL_OP); + } -/* -+----------------------------------------------------------------------------+ -| Function Name : int i_APCI2200_ReadDigitalOutput | -| (struct comedi_device *dev,struct comedi_subdevice *s,struct comedi_insn *insn, -| unsigned int *data) | -+----------------------------------------------------------------------------+ -| Task : Read value of the selected channel or port | -+----------------------------------------------------------------------------+ -| Input Parameters : struct comedi_device *dev : Driver handle | -| struct comedi_subdevice *s, :pointer to subdevice structure -| struct comedi_insn *insn :pointer to insn structure | -| unsigned int *data : Data Pointer to read status | -+----------------------------------------------------------------------------+ -| Output Parameters : -- | -+----------------------------------------------------------------------------+ -| Return Value : TRUE : No error occur | -| : FALSE : Error occur. Return the error | -| | -+----------------------------------------------------------------------------+ -*/ + data[1] = s->state; -static int i_APCI2200_ReadDigitalOutput(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - struct addi_private *devpriv = dev->private; - unsigned int ui_Temp; - unsigned int ui_NoOfChannel = CR_CHAN(insn->chanspec); /* get the channel */ - - ui_Temp = data[0]; - *data = inw(devpriv->iobase + APCI2200_DIGITAL_OP); - if (ui_Temp == 0) { - *data = (*data >> ui_NoOfChannel) & 0x1; - } /* if(ui_Temp==0) */ - else { - if (ui_Temp == 1) { - switch (ui_NoOfChannel) { - - case 2: - *data = (*data >> (2 * data[1])) & 3; - break; - - case 4: - *data = (*data >> (4 * data[1])) & 15; - break; - - case 8: - *data = (*data >> (8 * data[1])) & 255; - break; - - case 15: - break; - - default: - comedi_error(dev, " chan spec wrong"); - return -EINVAL; /* "sorry channel spec wrong " */ - - } /* switch(ui_NoOfChannels) */ - } /* if(ui_Temp==1) */ - else { - printk("\nSpecified channel not supported \n"); - } /* elseif(ui_Temp==1) */ - } /* elseif(ui_Temp==0) */ return insn->n; } diff --git a/drivers/staging/comedi/drivers/addi_apci_2200.c b/drivers/staging/comedi/drivers/addi_apci_2200.c index 99ce93cca398..cf406595c737 100644 --- a/drivers/staging/comedi/drivers/addi_apci_2200.c +++ b/drivers/staging/comedi/drivers/addi_apci_2200.c @@ -23,8 +23,7 @@ static const struct addi_board apci2200_boardtypes[] = { .reset = i_APCI2200_Reset, .di_bits = apci2200_di_insn_bits, .do_config = i_APCI2200_ConfigDigitalOutput, - .do_write = i_APCI2200_WriteDigitalOutput, - .do_bits = i_APCI2200_ReadDigitalOutput, + .do_bits = apci2200_do_insn_bits, .timer_config = i_APCI2200_ConfigWatchdog, .timer_write = i_APCI2200_StartStopWriteWatchdog, .timer_read = i_APCI2200_ReadWatchdog,