diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/amplc_pci236.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/amplc_pci236.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/drivers/staging/comedi/drivers/amplc_pci236.c b/drivers/staging/comedi/drivers/amplc_pci236.c deleted file mode 100644 index e7f6fa4d101a..000000000000 --- a/drivers/staging/comedi/drivers/amplc_pci236.c +++ /dev/null @@ -1,144 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * comedi/drivers/amplc_pci236.c - * Driver for Amplicon PCI236 DIO boards. - * - * Copyright (C) 2002-2014 MEV Ltd. <https://www.mev.co.uk/> - * - * COMEDI - Linux Control and Measurement Device Interface - * Copyright (C) 2000 David A. Schleef <ds@schleef.org> - */ -/* - * Driver: amplc_pci236 - * Description: Amplicon PCI236 - * Author: Ian Abbott <abbotti@mev.co.uk> - * Devices: [Amplicon] PCI236 (amplc_pci236) - * Updated: Fri, 25 Jul 2014 15:32:40 +0000 - * Status: works - * - * Configuration options: - * none - * - * Manual configuration of PCI board (PCI236) is not supported; it is - * configured automatically. - * - * The PCI236 board has a single 8255 appearing as subdevice 0. - * - * Subdevice 1 pretends to be a digital input device, but it always - * returns 0 when read. However, if you run a command with - * scan_begin_src=TRIG_EXT, a rising edge on port C bit 3 acts as an - * external trigger, which can be used to wake up tasks. This is like - * the comedi_parport device. If no interrupt is connected, then - * subdevice 1 is unused. - */ - -#include <linux/module.h> -#include <linux/interrupt.h> - -#include "../comedi_pci.h" - -#include "amplc_pc236.h" -#include "plx9052.h" - -/* Disable, and clear, interrupts */ -#define PCI236_INTR_DISABLE (PLX9052_INTCSR_LI1POL | \ - PLX9052_INTCSR_LI2POL | \ - PLX9052_INTCSR_LI1SEL | \ - PLX9052_INTCSR_LI1CLRINT) - -/* Enable, and clear, interrupts */ -#define PCI236_INTR_ENABLE (PLX9052_INTCSR_LI1ENAB | \ - PLX9052_INTCSR_LI1POL | \ - PLX9052_INTCSR_LI2POL | \ - PLX9052_INTCSR_PCIENAB | \ - PLX9052_INTCSR_LI1SEL | \ - PLX9052_INTCSR_LI1CLRINT) - -static void pci236_intr_update_cb(struct comedi_device *dev, bool enable) -{ - struct pc236_private *devpriv = dev->private; - - /* this will also clear the "local interrupt 1" latch */ - outl(enable ? PCI236_INTR_ENABLE : PCI236_INTR_DISABLE, - devpriv->lcr_iobase + PLX9052_INTCSR); -} - -static bool pci236_intr_chk_clr_cb(struct comedi_device *dev) -{ - struct pc236_private *devpriv = dev->private; - - /* check if interrupt occurred */ - if (!(inl(devpriv->lcr_iobase + PLX9052_INTCSR) & - PLX9052_INTCSR_LI1STAT)) - return false; - /* clear the interrupt */ - pci236_intr_update_cb(dev, devpriv->enable_irq); - return true; -} - -static const struct pc236_board pc236_pci_board = { - .name = "pci236", - .intr_update_cb = pci236_intr_update_cb, - .intr_chk_clr_cb = pci236_intr_chk_clr_cb, -}; - -static int pci236_auto_attach(struct comedi_device *dev, - unsigned long context_unused) -{ - struct pci_dev *pci_dev = comedi_to_pci_dev(dev); - struct pc236_private *devpriv; - unsigned long iobase; - int ret; - - dev_info(dev->class_dev, "amplc_pci236: attach pci %s\n", - pci_name(pci_dev)); - - devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); - if (!devpriv) - return -ENOMEM; - - dev->board_ptr = &pc236_pci_board; - dev->board_name = pc236_pci_board.name; - ret = comedi_pci_enable(dev); - if (ret) - return ret; - - devpriv->lcr_iobase = pci_resource_start(pci_dev, 1); - iobase = pci_resource_start(pci_dev, 2); - return amplc_pc236_common_attach(dev, iobase, pci_dev->irq, - IRQF_SHARED); -} - -static struct comedi_driver amplc_pci236_driver = { - .driver_name = "amplc_pci236", - .module = THIS_MODULE, - .auto_attach = pci236_auto_attach, - .detach = comedi_pci_detach, -}; - -static const struct pci_device_id pci236_pci_table[] = { - { PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, 0x0009) }, - { 0 } -}; - -MODULE_DEVICE_TABLE(pci, pci236_pci_table); - -static int amplc_pci236_pci_probe(struct pci_dev *dev, - const struct pci_device_id *id) -{ - return comedi_pci_auto_config(dev, &lc_pci236_driver, - id->driver_data); -} - -static struct pci_driver amplc_pci236_pci_driver = { - .name = "amplc_pci236", - .id_table = pci236_pci_table, - .probe = &lc_pci236_pci_probe, - .remove = comedi_pci_auto_unconfig, -}; - -module_comedi_pci_driver(amplc_pci236_driver, amplc_pci236_pci_driver); - -MODULE_AUTHOR("Comedi https://www.comedi.org"); -MODULE_DESCRIPTION("Comedi driver for Amplicon PCI236 DIO boards"); -MODULE_LICENSE("GPL"); |