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staging: comedi: addi_apci_3xxx: fix digital output 'insn_bits' function
authorH Hartley Sweeten <hartleys@visionengravers.com>
Tue, 6 Nov 2012 17:02:16 +0000 (10:02 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 13 Nov 2012 19:21:37 +0000 (11:21 -0800)
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].

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 <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/drivers/addi-data/hwdrv_apci3xxx.c patch | blob | history
drivers/staging/comedi/drivers/addi_apci_3xxx.c patch | blob | history

diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3xxx.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3xxx.c
index 5d3570c8a1cbd4da1dac1f7d8db817d790831c88..a45a2a26e0da8f11345bb556ef1a1747ccb62aab 100644 (file)
--- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3xxx.c
+++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci3xxx.c
@@ -1288,257 +1288,26 @@ static int apci3xxx_di_insn_bits(struct comedi_device *dev,
        return insn->n;
 }
 
-/*
-+----------------------------------------------------------------------------+
-|                           DIGITAL OUTPUT SUBDEVICE                         |
-+----------------------------------------------------------------------------+
-
-*/
-
-/*
-+----------------------------------------------------------------------------+
-| Function name     :int i_APCI3XXX_InsnBitsDigitalOutput                    |
-|                                          (struct comedi_device *dev,              |
-|                                           struct comedi_subdevice *s,             |
-|                                           struct comedi_insn *insn,               |
-|                                           unsigned int *data)                  |
-+----------------------------------------------------------------------------+
-| Task              : Write the selected output mask and read the status from|
-|                     all digital output channles                            |
-+----------------------------------------------------------------------------+
-| Input Parameters  : dw_ChannelMask = data [0];                             |
-|                     dw_BitMask     = data [1];                             |
-+----------------------------------------------------------------------------+
-| Output Parameters : data[1] : All digital output channles states           |
-+----------------------------------------------------------------------------+
-| Return Value      : >0  : No error                                         |
-|                    -4   : Channel mask error                               |
-|                    -101 : Data size error                                  |
-+----------------------------------------------------------------------------+
-*/
-static int i_APCI3XXX_InsnBitsDigitalOutput(struct comedi_device *dev,
-                                           struct comedi_subdevice *s,
-                                           struct comedi_insn *insn,
-                                           unsigned int *data)
-{
-       struct addi_private *devpriv = dev->private;
-       int i_ReturnValue = insn->n;
-       unsigned char b_ChannelCpt = 0;
-       unsigned int dw_ChannelMask = 0;
-       unsigned int dw_BitMask = 0;
-       unsigned int dw_Status = 0;
-
-       /************************/
-       /* Test the buffer size */
-       /************************/
-
-       if (insn->n >= 2) {
-          /*******************************/
-               /* Get the channe and bit mask */
-          /*******************************/
-
-               dw_ChannelMask = data[0];
-               dw_BitMask = data[1];
-
-          /*************************/
-               /* Test the channel mask */
-          /*************************/
-
-               if ((dw_ChannelMask & 0XFFFFFFF0) == 0) {
-             /*********************************/
-                       /* Test if set/reset any channel */
-             /*********************************/
-
-                       if (dw_ChannelMask & 0xF) {
-                /********************************/
-                               /* Read the digital output port */
-                /********************************/
-
-                               dw_Status = inl(devpriv->iobase + 48);
-
-                               for (b_ChannelCpt = 0; b_ChannelCpt < 4;
-                                       b_ChannelCpt++) {
-                                       if ((dw_ChannelMask >> b_ChannelCpt) &
-                                               1) {
-                                               dw_Status =
-                                                       (dw_Status & (0xF -
-                                                               (1 << b_ChannelCpt))) | (dw_BitMask & (1 << b_ChannelCpt));
-                                       }
-                               }
-
-                               outl(dw_Status, devpriv->iobase + 48);
-                       }
-
-             /********************************/
-                       /* Read the digital output port */
-             /********************************/
-
-                       data[1] = inl(devpriv->iobase + 48);
-               } else {
-             /************************/
-                       /* Config command error */
-             /************************/
-
-                       printk("Channel mask error\n");
-                       i_ReturnValue = -4;
-               }
-       } else {
-          /*******************/
-               /* Data size error */
-          /*******************/
-
-               printk("Buffer size error\n");
-               i_ReturnValue = -101;
-       }
-
-       return i_ReturnValue;
-}
-
-/*
-+----------------------------------------------------------------------------+
-| Function name     :int i_APCI3XXX_InsnWriteDigitalOutput                   |
-|                                          (struct comedi_device *dev,              |
-|                                           struct comedi_subdevice *s,             |
-|                                           struct comedi_insn *insn,               |
-|                                           unsigned int *data)                  |
-+----------------------------------------------------------------------------+
-| Task              : Set the state from digital output channel              |
-+----------------------------------------------------------------------------+
-| Input Parameters  : b_Channel = CR_CHAN(insn->chanspec)                    |
-|                     b_State   = data [0]                                   |
-+----------------------------------------------------------------------------+
-| Output Parameters : -                                                      |
-+----------------------------------------------------------------------------+
-| Return Value      : >0  : No error                                         |
-|                    -3   : Channel selection error                          |
-|                    -101 : Data size error                                  |
-+----------------------------------------------------------------------------+
-*/
-
-static int i_APCI3XXX_InsnWriteDigitalOutput(struct comedi_device *dev,
-                                            struct comedi_subdevice *s,
-                                            struct comedi_insn *insn,
-                                            unsigned int *data)
+static int apci3xxx_do_insn_bits(struct comedi_device *dev,
+                                struct comedi_subdevice *s,
+                                struct comedi_insn *insn,
+                                unsigned int *data)
 {
        struct addi_private *devpriv = dev->private;
-       int i_ReturnValue = insn->n;
-       unsigned char b_Channel = CR_CHAN(insn->chanspec);
-       unsigned char b_State = 0;
-       unsigned int dw_Status = 0;
-
-       /************************/
-       /* Test the buffer size */
-       /************************/
+       unsigned int mask = data[0];
+       unsigned int bits = data[1];
 
-       if (insn->n >= 1) {
-          /***************************/
-               /* Test the channel number */
-          /***************************/
-
-               if (b_Channel < devpriv->s_EeParameters.i_NbrDoChannel) {
-             /*******************/
-                       /* Get the command */
-             /*******************/
-
-                       b_State = (unsigned char) data[0];
+       s->state = inl(devpriv->iobase + 48) & 0xf;
+       if (mask) {
+               s->state &= ~mask;
+               s->state |= (bits & mask);
 
-             /********************************/
-                       /* Read the digital output port */
-             /********************************/
-
-                       dw_Status = inl(devpriv->iobase + 48);
-
-                       dw_Status =
-                               (dw_Status & (0xF -
-                                       (1 << b_Channel))) | ((b_State & 1) <<
-                               b_Channel);
-                       outl(dw_Status, devpriv->iobase + 48);
-               } else {
-             /***************************/
-                       /* Channel selection error */
-             /***************************/
-
-                       printk("Channel selection error\n");
-                       i_ReturnValue = -3;
-               }
-       } else {
-          /*******************/
-               /* Data size error */
-          /*******************/
-
-               printk("Buffer size error\n");
-               i_ReturnValue = -101;
+               outl(s->state, devpriv->iobase + 48);
        }
 
-       return i_ReturnValue;
-}
+       data[1] = s->state;
 
-/*
-+----------------------------------------------------------------------------+
-| Function name     :int i_APCI3XXX_InsnReadDigitalOutput                    |
-|                                          (struct comedi_device *dev,              |
-|                                           struct comedi_subdevice *s,             |
-|                                           struct comedi_insn *insn,               |
-|                                           unsigned int *data)                  |
-+----------------------------------------------------------------------------+
-| Task              : Read the state from digital output channel             |
-+----------------------------------------------------------------------------+
-| Input Parameters  : b_Channel = CR_CHAN(insn->chanspec)                    |
-+----------------------------------------------------------------------------+
-| Output Parameters : b_State   = data [0]                                   |
-+----------------------------------------------------------------------------+
-| Return Value      : >0  : No error                                         |
-|                    -3   : Channel selection error                          |
-|                    -101 : Data size error                                  |
-+----------------------------------------------------------------------------+
-*/
-
-static int i_APCI3XXX_InsnReadDigitalOutput(struct comedi_device *dev,
-                                           struct comedi_subdevice *s,
-                                           struct comedi_insn *insn,
-                                           unsigned int *data)
-{
-       struct addi_private *devpriv = dev->private;
-       int i_ReturnValue = insn->n;
-       unsigned char b_Channel = CR_CHAN(insn->chanspec);
-       unsigned int dw_Status = 0;
-
-       /************************/
-       /* Test the buffer size */
-       /************************/
-
-       if (insn->n >= 1) {
-          /***************************/
-               /* Test the channel number */
-          /***************************/
-
-               if (b_Channel < devpriv->s_EeParameters.i_NbrDoChannel) {
-             /********************************/
-                       /* Read the digital output port */
-             /********************************/
-
-                       dw_Status = inl(devpriv->iobase + 48);
-
-                       dw_Status = (dw_Status >> b_Channel) & 1;
-                       *data = dw_Status;
-               } else {
-             /***************************/
-                       /* Channel selection error */
-             /***************************/
-
-                       printk("Channel selection error\n");
-                       i_ReturnValue = -3;
-               }
-       } else {
-          /*******************/
-               /* Data size error */
-          /*******************/
-
-               printk("Buffer size error\n");
-               i_ReturnValue = -101;
-       }
-
-       return i_ReturnValue;
+       return insn->n;
 }
 
 /*
diff --git a/drivers/staging/comedi/drivers/addi_apci_3xxx.c b/drivers/staging/comedi/drivers/addi_apci_3xxx.c
index d0cd2e8544ba32bbca4fa34c509640914eaa1a30..ae2967a027ed768e57ed12be7ce2c6cb45180a93 100644 (file)
--- a/drivers/staging/comedi/drivers/addi_apci_3xxx.c
+++ b/drivers/staging/comedi/drivers/addi_apci_3xxx.c
@@ -191,9 +191,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -224,9 +222,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -257,9 +253,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -290,9 +284,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -323,9 +315,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -356,9 +346,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -513,9 +501,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .ao_write               = i_APCI3XXX_InsnWriteAnalogOutput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -550,9 +536,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .ao_write               = i_APCI3XXX_InsnWriteAnalogOutput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -587,9 +571,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .ao_write               = i_APCI3XXX_InsnWriteAnalogOutput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -624,9 +606,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .ao_write               = i_APCI3XXX_InsnWriteAnalogOutput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
                .ttl_config             = i_APCI3XXX_InsnConfigInitTTLIO,
                .ttl_bits               = i_APCI3XXX_InsnBitsTTLIO,
                .ttl_read               = i_APCI3XXX_InsnReadTTLIO,
@@ -655,9 +635,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
        }, {
                .pc_DriverName          = "apci3002-16",
                .i_VendorId             = PCI_VENDOR_ID_ADDIDATA,
@@ -682,9 +660,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
        }, {
                .pc_DriverName          = "apci3002-8",
                .i_VendorId             = PCI_VENDOR_ID_ADDIDATA,
@@ -709,9 +685,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
        }, {
                .pc_DriverName          = "apci3002-4",
                .i_VendorId             = PCI_VENDOR_ID_ADDIDATA,
@@ -736,9 +710,7 @@ static const struct addi_board apci3xxx_boardtypes[] = {
                .ai_config              = i_APCI3XXX_InsnConfigAnalogInput,
                .ai_read                = i_APCI3XXX_InsnReadAnalogInput,
                .di_bits                = apci3xxx_di_insn_bits,
-               .do_write               = i_APCI3XXX_InsnWriteDigitalOutput,
-               .do_bits                = i_APCI3XXX_InsnBitsDigitalOutput,
-               .do_read                = i_APCI3XXX_InsnReadDigitalOutput,
+               .do_bits                = apci3xxx_do_insn_bits,
        }, {
                .pc_DriverName          = "apci3500",
                .i_VendorId             = PCI_VENDOR_ID_ADDIDATA,
Linux kernel for KaRo TX COM modules