From: H Hartley Sweeten Date: Tue, 6 Nov 2012 17:11:02 +0000 (-0700) Subject: staging: comedi: addi_apci_1564: fix digital output 'insn_bits' function X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a4a257039fb580142a30872537a03f4d7d7627e3;p=deliverable%2Flinux.git staging: comedi: addi_apci_1564: 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_apci1564.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c index 68623d93fb2b..fc31c4b93407 100644 --- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c +++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c @@ -258,250 +258,27 @@ static int i_APCI1564_ConfigDigitalOutput(struct comedi_device *dev, return insn->n; } -/* -+----------------------------------------------------------------------------+ -| Function Name : int i_APCI1564_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 | -| unsigned int ui_NoOfChannels : No Of Channels To Write | -| 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_APCI1564_WriteDigitalOutput(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) +static int apci1564_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; + unsigned int mask = data[0]; + unsigned int bits = data[1]; - ui_NoOfChannel = CR_CHAN(insn->chanspec); - if (devpriv->b_OutputMemoryStatus) { - ui_Temp = - inl(devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP + + s->state = inl(devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP + APCI1564_DIGITAL_OP_RW); - } /* if (devpriv->b_OutputMemoryStatus ) */ - else { - ui_Temp = 0; - } /* else if (devpriv->b_OutputMemoryStatus ) */ - if (data[3] == 0) { - if (data[1] == 0) { - data[0] = (data[0] << ui_NoOfChannel) | ui_Temp; - outl(data[0], - devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP + - APCI1564_DIGITAL_OP_RW); - } /* 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 16: - data[0] = - (data[0] << (16 * - data[2])) | ui_Temp; - break; - case 31: - data[0] = data[0] | ui_Temp; - break; - default: - comedi_error(dev, " chan spec wrong"); - return -EINVAL; /* "sorry channel spec wrong " */ - } /* switch (ui_NoOfChannels) */ - outl(data[0], - devpriv->i_IobaseAmcc + - APCI1564_DIGITAL_OP + - APCI1564_DIGITAL_OP_RW); - } /* if (data[1]==1) */ - else { - printk("\nSpecified channel not supported\n"); - } /* else if (data[1]==1) */ - } /* else if (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) ^ - 0xffffffff; - data[0] = data[0] & ui_Temp; - outl(data[0], - devpriv->i_IobaseAmcc + - APCI1564_DIGITAL_OP + - APCI1564_DIGITAL_OP_RW); - } /* 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])) ^ - 0xffffffff) & 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])) ^ - 0xffffffff) & 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])) ^ - 0xffffffff) & ui_Temp; - break; - case 16: - data[0] = ~data[0] & 0xffff; - ui_Temp1 = 65535; - ui_Temp1 = - ui_Temp1 << 16 * - data[2]; - ui_Temp = ui_Temp | ui_Temp1; - data[0] = - ((data[0] << (16 * - data - [2])) ^ - 0xffffffff) & ui_Temp; - break; - case 31: - break; - default: - comedi_error(dev, - " chan spec wrong"); - return -EINVAL; /* "sorry channel spec wrong " */ - } /* switch(ui_NoOfChannels) */ - outl(data[0], - devpriv->i_IobaseAmcc + - APCI1564_DIGITAL_OP + - APCI1564_DIGITAL_OP_RW); - } /* if (data[1]==1) */ - else { - printk("\nSpecified channel not supported\n"); - } /* else if (data[1]==1) */ - } /* else if (data[1]==0) */ - } /* if (data[3]==1); */ - else { - printk("\nSpecified functionality does not exist\n"); - return -EINVAL; - } /* else if (data[3]==1) */ - } /* else if (data[3]==0) */ - return insn->n; -} + if (mask) { + s->state &= ~mask; + s->state |= (bits & mask); + + outl(s->state, devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP + + APCI1564_DIGITAL_OP_RW); + } + + data[1] = s->state; -/* -+----------------------------------------------------------------------------+ -| Function Name : int i_APCI1564_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 | -| unsigned int ui_NoOfChannels : No Of Channels To read | -| 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_APCI1564_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; - - ui_NoOfChannel = CR_CHAN(insn->chanspec); - ui_Temp = data[0]; - *data = inl(devpriv->i_IobaseAmcc + APCI1564_DIGITAL_OP + - APCI1564_DIGITAL_OP_RW); - 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 16: - *data = (*data >> (16 * data[1])) & 65535; - break; - - case 31: - break; - - default: - comedi_error(dev, " chan spec wrong"); - return -EINVAL; /* "sorry channel spec wrong " */ - break; - } /* switch(ui_NoOfChannels) */ - } /* if (ui_Temp==1) */ - else { - printk("\nSpecified channel not supported \n"); - } /* else if (ui_Temp==1) */ - } /* else if (ui_Temp==0) */ return insn->n; } diff --git a/drivers/staging/comedi/drivers/addi_apci_1564.c b/drivers/staging/comedi/drivers/addi_apci_1564.c index 42aea51f4619..2fd335b2aad5 100644 --- a/drivers/staging/comedi/drivers/addi_apci_1564.c +++ b/drivers/staging/comedi/drivers/addi_apci_1564.c @@ -26,8 +26,7 @@ static const struct addi_board apci1564_boardtypes[] = { .di_config = i_APCI1564_ConfigDigitalInput, .di_bits = apci1564_di_insn_bits, .do_config = i_APCI1564_ConfigDigitalOutput, - .do_write = i_APCI1564_WriteDigitalOutput, - .do_bits = i_APCI1564_ReadDigitalOutput, + .do_bits = apci1564_do_insn_bits, .do_read = i_APCI1564_ReadInterruptStatus, .timer_config = i_APCI1564_ConfigTimerCounterWatchdog, .timer_write = i_APCI1564_StartStopWriteTimerCounterWatchdog,