X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?p=kvmfornfv.git;a=blobdiff_plain;f=kernel%2Fdrivers%2Fstaging%2Fcomedi%2Fdrivers%2Fmite.c;h=fa7ae2c04556378cc8d509bf24690e657fc61e36;hp=e43a0c8323c18e7715df21b875d07191dff702ff;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hpb=f93b97fd65072de626c074dbe099a1fff05ce060 diff --git a/kernel/drivers/staging/comedi/drivers/mite.c b/kernel/drivers/staging/comedi/drivers/mite.c index e43a0c832..fa7ae2c04 100644 --- a/kernel/drivers/staging/comedi/drivers/mite.c +++ b/kernel/drivers/staging/comedi/drivers/mite.c @@ -1,52 +1,51 @@ /* - comedi/drivers/mite.c - Hardware driver for NI Mite PCI interface chip - - COMEDI - Linux Control and Measurement Device Interface - Copyright (C) 1997-2002 David A. Schleef - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. -*/ + * comedi/drivers/mite.c + * Hardware driver for NI Mite PCI interface chip + * + * COMEDI - Linux Control and Measurement Device Interface + * Copyright (C) 1997-2002 David A. Schleef + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ /* - The PCI-MIO E series driver was originally written by - Tomasz Motylewski <...>, and ported to comedi by ds. - - References for specifications: - - 321747b.pdf Register Level Programmer Manual (obsolete) - 321747c.pdf Register Level Programmer Manual (new) - DAQ-STC reference manual - - Other possibly relevant info: - - 320517c.pdf User manual (obsolete) - 320517f.pdf User manual (new) - 320889a.pdf delete - 320906c.pdf maximum signal ratings - 321066a.pdf about 16x - 321791a.pdf discontinuation of at-mio-16e-10 rev. c - 321808a.pdf about at-mio-16e-10 rev P - 321837a.pdf discontinuation of at-mio-16de-10 rev d - 321838a.pdf about at-mio-16de-10 rev N - - ISSUES: - -*/ - -/* #define USE_KMALLOC */ + * The PCI-MIO E series driver was originally written by + * Tomasz Motylewski <...>, and ported to comedi by ds. + * + * References for specifications: + * + * 321747b.pdf Register Level Programmer Manual (obsolete) + * 321747c.pdf Register Level Programmer Manual (new) + * DAQ-STC reference manual + * + * Other possibly relevant info: + * + * 320517c.pdf User manual (obsolete) + * 320517f.pdf User manual (new) + * 320889a.pdf delete + * 320906c.pdf maximum signal ratings + * 321066a.pdf about 16x + * 321791a.pdf discontinuation of at-mio-16e-10 rev. c + * 321808a.pdf about at-mio-16e-10 rev P + * 321837a.pdf discontinuation of at-mio-16de-10 rev d + * 321838a.pdf about at-mio-16de-10 rev N + * + * ISSUES: + * + */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include +#include #include "../comedi_pci.h" @@ -132,7 +131,7 @@ int mite_setup2(struct comedi_device *dev, mite->mite_io_addr + MITE_IODWBSR); } /* - * make sure dma bursts work. I got this from running a bus analyzer + * Make sure dma bursts work. I got this from running a bus analyzer * on a pxi-6281 and a pxi-6713. 6713 powered up with register value * of 0x61f and bursts worked. 6281 powered up with register value of * 0x1f and bursts didn't work. The NI windows driver reads the @@ -224,7 +223,8 @@ struct mite_channel *mite_request_channel_in_range(struct mite_struct *mite, unsigned long flags; struct mite_channel *channel = NULL; - /* spin lock so mite_release_channel can be called safely + /* + * spin lock so mite_release_channel can be called safely * from interrupts */ spin_lock_irqsave(&mite->lock, flags); @@ -246,15 +246,15 @@ void mite_release_channel(struct mite_channel *mite_chan) struct mite_struct *mite = mite_chan->mite; unsigned long flags; - /* spin lock to prevent races with mite_request_channel */ + /* spin lock to prevent races with mite_request_channel */ spin_lock_irqsave(&mite->lock, flags); if (mite->channel_allocated[mite_chan->channel]) { mite_dma_disarm(mite_chan); mite_dma_reset(mite_chan); - /* - * disable all channel's interrupts (do it after disarm/reset so - * MITE_CHCR reg isn't changed while dma is still active!) - */ + /* + * disable all channel's interrupts (do it after disarm/reset so + * MITE_CHCR reg isn't changed while dma is still active!) + */ writel(CHCR_CLR_DMA_IE | CHCR_CLR_LINKP_IE | CHCR_CLR_SAR_IE | CHCR_CLR_DONE_IE | CHCR_CLR_MRDY_IE | CHCR_CLR_DRDY_IE | @@ -286,7 +286,7 @@ void mite_dma_arm(struct mite_channel *mite_chan) writel(chor, mite->mite_io_addr + MITE_CHOR(mite_chan->channel)); mmiowb(); spin_unlock_irqrestore(&mite->lock, flags); -/* mite_dma_tcr(mite, channel); */ + /* mite_dma_tcr(mite, channel); */ } EXPORT_SYMBOL_GPL(mite_dma_arm); @@ -529,8 +529,10 @@ int mite_sync_input_dma(struct mite_channel *mite_chan, } count = nbytes - async->buf_write_count; - /* it's possible count will be negative due to - * conservative value returned by mite_bytes_written_to_memory_lb */ + /* + * it's possible count will be negative due to conservative value + * returned by mite_bytes_written_to_memory_lb + */ if (count <= 0) return 0; @@ -551,7 +553,7 @@ int mite_sync_output_dma(struct mite_channel *mite_chan, u32 nbytes_ub, nbytes_lb; int count; - /* read alloc as much as we can */ + /* read alloc as much as we can */ comedi_buf_read_alloc(s, async->prealloc_bufsz); nbytes_lb = mite_bytes_read_from_memory_lb(mite_chan); if (cmd->stop_src == TRIG_COUNT && (int)(nbytes_lb - stop_count) > 0) @@ -622,5 +624,5 @@ module_init(mite_module_init); module_exit(mite_module_exit); MODULE_AUTHOR("Comedi http://www.comedi.org"); -MODULE_DESCRIPTION("Comedi low-level driver"); +MODULE_DESCRIPTION("Comedi helper for NI Mite PCI interface chip"); MODULE_LICENSE("GPL");