staging: comedi: ni_mio_common: implement INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS

Adds implementation of the new INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS
instruction.  This patch also adds data for digital subdevices that are
streaming capable (within the ni_mio_* family).  Mostly, only the m-series
devices are capable of digital streaming.

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
index 44fcb37..961ea97 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -2464,6 +2464,7 @@ static int ni_ai_insn_config(struct comedi_device *dev,
                             struct comedi_subdevice *s,
                             struct comedi_insn *insn, unsigned int *data)
 {
+       const struct ni_board_struct *board = dev->board_ptr;
        struct ni_private *devpriv = dev->private;
 
        if (insn->n < 1)
@@ -2498,6 +2499,15 @@ static int ni_ai_insn_config(struct comedi_device *dev,
                        }
                }
                return 2;
+       case INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS:
+               /* we don't care about actual channels */
+               /* data[3] : chanlist_len */
+               data[1] = ni_min_ai_scan_period_ns(dev, data[3]);
+               if (devpriv->is_611x || devpriv->is_6143)
+                       data[2] = 0; /* simultaneous output */
+               else
+                       data[2] = board->ai_speed;
+               return 0;
        default:
                break;
        }
@@ -2834,6 +2844,11 @@ static int ni_ao_insn_config(struct comedi_device *dev,
                return 0;
        case INSN_CONFIG_ARM:
                return ni_ao_arm(dev, s);
+       case INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS:
+               /* we don't care about actual channels */
+               data[1] = board->ao_speed;
+               data[2] = 0;
+               return 0;
        default:
                break;
        }
@@ -3475,6 +3490,15 @@ static int ni_m_series_dio_insn_config(struct comedi_device *dev,
 {
        int ret;
 
+       if (data[0] == INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS) {
+               const struct ni_board_struct *board = dev->board_ptr;
+
+               /* we don't care about actual channels */
+               data[1] = board->dio_speed;
+               data[2] = 0;
+               return 0;
+       }
+
        ret = comedi_dio_insn_config(dev, s, insn, data, 0);
        if (ret)
                return ret;

diff --git a/drivers/staging/comedi/drivers/ni_pcimio.c b/drivers/staging/comedi/drivers/ni_pcimio.c
index f9e466d..14b26ff 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_pcimio.c
+++ b/drivers/staging/comedi/drivers/ni_pcimio.c
@@ -693,6 +693,7 @@ static const struct ni_board_struct ni_boards[] = {
                .ai_speed       = 4000,
                .reg_type       = ni_reg_622x,
                .caldac         = { caldac_none },
+               .dio_speed      = 1000,
        },
        [BOARD_PCI6221] = {
                .name           = "pci-6221",
@@ -708,6 +709,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_622x,
                .ao_speed       = 1200,
                .caldac         = { caldac_none },
+               .dio_speed      = 1000,
        },
        [BOARD_PCI6221_37PIN] = {
                .name           = "pci-6221_37pin",
@@ -738,6 +740,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_622x,
                .ao_speed       = 1200,
                .caldac         = { caldac_none },
+               .dio_speed      = 1000,
        },
        [BOARD_PCI6224] = {
                .name           = "pci-6224",
@@ -749,6 +752,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_622x,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 1000,
        },
        [BOARD_PXI6224] = {
                .name           = "pxi-6224",
@@ -760,6 +764,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_622x,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 1000,
        },
        [BOARD_PCI6225] = {
                .name           = "pci-6225",
@@ -776,6 +781,7 @@ static const struct ni_board_struct ni_boards[] = {
                .ao_speed       = 1200,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 1000,
        },
        [BOARD_PXI6225] = {
                .name           = "pxi-6225",
@@ -792,6 +798,7 @@ static const struct ni_board_struct ni_boards[] = {
                .ao_speed       = 1200,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 1000,
        },
        [BOARD_PCI6229] = {
                .name           = "pci-6229",
@@ -824,6 +831,7 @@ static const struct ni_board_struct ni_boards[] = {
                .ao_speed       = 1200,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 1000,
        },
        [BOARD_PCI6250] = {
                .name           = "pci-6250",
@@ -844,6 +852,7 @@ static const struct ni_board_struct ni_boards[] = {
                .ai_speed       = 800,
                .reg_type       = ni_reg_625x,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCI6251] = {
                .name           = "pci-6251",
@@ -859,6 +868,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_625x,
                .ao_speed       = 350,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PXI6251] = {
                .name           = "pxi-6251",
@@ -874,6 +884,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_625x,
                .ao_speed       = 350,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCIE6251] = {
                .name           = "pcie-6251",
@@ -889,6 +900,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_625x,
                .ao_speed       = 350,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PXIE6251] = {
                .name           = "pxie-6251",
@@ -904,6 +916,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_625x,
                .ao_speed       = 350,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCI6254] = {
                .name           = "pci-6254",
@@ -926,6 +939,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_625x,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCI6259] = {
                .name           = "pci-6259",
@@ -958,6 +972,7 @@ static const struct ni_board_struct ni_boards[] = {
                .ao_speed       = 350,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCIE6259] = {
                .name           = "pcie-6259",
@@ -990,6 +1005,7 @@ static const struct ni_board_struct ni_boards[] = {
                .ao_speed       = 350,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCI6280] = {
                .name           = "pci-6280",
@@ -1012,6 +1028,7 @@ static const struct ni_board_struct ni_boards[] = {
                .ao_fifo_depth  = 8191,
                .reg_type       = ni_reg_628x,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCI6281] = {
                .name           = "pci-6281",
@@ -1027,6 +1044,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_628x,
                .ao_speed       = 350,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PXI6281] = {
                .name           = "pxi-6281",
@@ -1042,6 +1060,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_628x,
                .ao_speed       = 350,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCI6284] = {
                .name           = "pci-6284",
@@ -1064,6 +1083,7 @@ static const struct ni_board_struct ni_boards[] = {
                .reg_type       = ni_reg_628x,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCI6289] = {
                .name           = "pci-6289",
@@ -1096,6 +1116,7 @@ static const struct ni_board_struct ni_boards[] = {
                .ao_speed       = 350,
                .has_32dio_chan = 1,
                .caldac         = { caldac_none },
+               .dio_speed      = 100,
        },
        [BOARD_PCI6143] = {
                .name           = "pci-6143",

diff --git a/drivers/staging/comedi/drivers/ni_stc.h b/drivers/staging/comedi/drivers/ni_stc.h
index 831088c..1c6bd25 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_stc.h
+++ b/drivers/staging/comedi/drivers/ni_stc.h
@@ -953,6 +953,7 @@ struct ni_board_struct {
        int reg_type;
        unsigned int has_8255:1;
        unsigned int has_32dio_chan:1;
+       unsigned int dio_speed; /* not for e-series */
 
        enum caldac_enum caldac[3];
 };