diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/ni_daq_dio24.c')
-rw-r--r-- | drivers/staging/comedi/drivers/ni_daq_dio24.c | 236 |
1 files changed, 77 insertions, 159 deletions
diff --git a/drivers/staging/comedi/drivers/ni_daq_dio24.c b/drivers/staging/comedi/drivers/ni_daq_dio24.c index 0700a8b..9017be3 100644 --- a/drivers/staging/comedi/drivers/ni_daq_dio24.c +++ b/drivers/staging/comedi/drivers/ni_daq_dio24.c @@ -187,25 +187,7 @@ static int dio24_detach(struct comedi_device *dev) return 0; }; -/* PCMCIA crap */ - -/* - All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If - you do not define PCMCIA_DEBUG at all, all the debug code will be - left out. If you compile with PCMCIA_DEBUG=0, the debug code will - be present but disabled -- but it can then be enabled for specific - modules at load time with a 'pc_debug=#' option to insmod. -*/ -#ifdef PCMCIA_DEBUG -static int pc_debug = PCMCIA_DEBUG; -module_param(pc_debug, int, 0644); -#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) -static char *version = "ni_daq_dio24.c, based on dummy_cs.c"; -#else -#define DEBUG(n, args...) -#endif - -/*====================================================================*/ +/* PCMCIA crap -- watch your words! */ static void dio24_config(struct pcmcia_device *link); static void dio24_release(struct pcmcia_device *link); @@ -261,7 +243,7 @@ static int dio24_cs_attach(struct pcmcia_device *link) printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - CS-attach!\n"); - DEBUG(0, "dio24_cs_attach()\n"); + dev_dbg(&link->dev, "dio24_cs_attach()\n"); /* Allocate space for private device-specific data */ local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL); @@ -272,7 +254,6 @@ static int dio24_cs_attach(struct pcmcia_device *link) /* Interrupt setup */ link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; - link->irq.IRQInfo1 = IRQ_LEVEL_ID; link->irq.Handler = NULL; /* @@ -306,7 +287,7 @@ static void dio24_cs_detach(struct pcmcia_device *link) printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - cs-detach!\n"); - DEBUG(0, "dio24_cs_detach(0x%p)\n", link); + dev_dbg(&link->dev, "dio24_cs_detach\n"); if (link->dev_node) { ((struct local_info_t *)link->priv)->stop = 1; @@ -327,142 +308,85 @@ static void dio24_cs_detach(struct pcmcia_device *link) ======================================================================*/ -static void dio24_config(struct pcmcia_device *link) +static int dio24_pcmcia_config_loop(struct pcmcia_device *p_dev, + cistpl_cftable_entry_t *cfg, + cistpl_cftable_entry_t *dflt, + unsigned int vcc, + void *priv_data) { - struct local_info_t *dev = link->priv; - tuple_t tuple; - cisparse_t parse; - int last_ret; - u_char buf[64]; - win_req_t req; + win_req_t *req = priv_data; memreq_t map; - cistpl_cftable_entry_t dflt = { 0 }; - printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO! - config\n"); - - DEBUG(0, "dio24_config(0x%p)\n", link); - - /* - This reads the card's CONFIG tuple to find its configuration - registers. - */ - tuple.DesiredTuple = CISTPL_CONFIG; - tuple.Attributes = 0; - tuple.TupleData = buf; - tuple.TupleDataMax = sizeof(buf); - tuple.TupleOffset = 0; - - last_ret = pcmcia_get_first_tuple(link, &tuple); - if (last_ret) { - cs_error(link, GetFirstTuple, last_ret); - goto cs_failed; - } + if (cfg->index == 0) + return -ENODEV; - last_ret = pcmcia_get_tuple_data(link, &tuple); - if (last_ret) { - cs_error(link, GetTupleData, last_ret); - goto cs_failed; + /* Does this card need audio output? */ + if (cfg->flags & CISTPL_CFTABLE_AUDIO) { + p_dev->conf.Attributes |= CONF_ENABLE_SPKR; + p_dev->conf.Status = CCSR_AUDIO_ENA; } - last_ret = pcmcia_parse_tuple(&tuple, &parse); - if (last_ret) { - cs_error(link, ParseTuple, last_ret); - goto cs_failed; + /* Do we need to allocate an interrupt? */ + if (cfg->irq.IRQInfo1 || dflt->irq.IRQInfo1) + p_dev->conf.Attributes |= CONF_ENABLE_IRQ; + + /* IO window settings */ + p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0; + if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { + cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; + p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; + if (!(io->flags & CISTPL_IO_8BIT)) + p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16; + if (!(io->flags & CISTPL_IO_16BIT)) + p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; + p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; + p_dev->io.BasePort1 = io->win[0].base; + p_dev->io.NumPorts1 = io->win[0].len; + if (io->nwin > 1) { + p_dev->io.Attributes2 = p_dev->io.Attributes1; + p_dev->io.BasePort2 = io->win[1].base; + p_dev->io.NumPorts2 = io->win[1].len; + } + /* This reserves IO space but doesn't actually enable it */ + if (pcmcia_request_io(p_dev, &p_dev->io) != 0) + return -ENODEV; } - link->conf.ConfigBase = parse.config.base; - link->conf.Present = parse.config.rmask[0]; - - /* - In this loop, we scan the CIS for configuration table entries, - each of which describes a valid card configuration, including - voltage, IO window, memory window, and interrupt settings. - - We make no assumptions about the card to be configured: we use - just the information available in the CIS. In an ideal world, - this would work for any PCMCIA card, but it requires a complete - and accurate CIS. In practice, a driver usually "knows" most of - these things without consulting the CIS, and most client drivers - will only use the CIS to fill in implementation-defined details. - */ - tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; - last_ret = pcmcia_get_first_tuple(link, &tuple); - if (last_ret) { - cs_error(link, GetFirstTuple, last_ret); - goto cs_failed; + if ((cfg->mem.nwin > 0) || (dflt->mem.nwin > 0)) { + cistpl_mem_t *mem = + (cfg->mem.nwin) ? &cfg->mem : &dflt->mem; + req->Attributes = WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM; + req->Attributes |= WIN_ENABLE; + req->Base = mem->win[0].host_addr; + req->Size = mem->win[0].len; + if (req->Size < 0x1000) + req->Size = 0x1000; + req->AccessSpeed = 0; + if (pcmcia_request_window(p_dev, req, &p_dev->win)) + return -ENODEV; + map.Page = 0; + map.CardOffset = mem->win[0].card_addr; + if (pcmcia_map_mem_page(p_dev, p_dev->win, &map)) + return -ENODEV; } - while (1) { - cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); - if (pcmcia_get_tuple_data(link, &tuple) != 0) - goto next_entry; - if (pcmcia_parse_tuple(&tuple, &parse) != 0) - goto next_entry; - - if (cfg->flags & CISTPL_CFTABLE_DEFAULT) - dflt = *cfg; - if (cfg->index == 0) - goto next_entry; - link->conf.ConfigIndex = cfg->index; - - /* Does this card need audio output? */ - if (cfg->flags & CISTPL_CFTABLE_AUDIO) { - link->conf.Attributes |= CONF_ENABLE_SPKR; - link->conf.Status = CCSR_AUDIO_ENA; - } + /* If we got this far, we're cool! */ + return 0; +} - /* Do we need to allocate an interrupt? */ - if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1) - link->conf.Attributes |= CONF_ENABLE_IRQ; - - /* IO window settings */ - link->io.NumPorts1 = link->io.NumPorts2 = 0; - if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; - link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; - if (!(io->flags & CISTPL_IO_8BIT)) - link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; - if (!(io->flags & CISTPL_IO_16BIT)) - link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; - link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; - link->io.BasePort1 = io->win[0].base; - link->io.NumPorts1 = io->win[0].len; - if (io->nwin > 1) { - link->io.Attributes2 = link->io.Attributes1; - link->io.BasePort2 = io->win[1].base; - link->io.NumPorts2 = io->win[1].len; - } - /* This reserves IO space but doesn't actually enable it */ - if (pcmcia_request_io(link, &link->io) != 0) - goto next_entry; - } +static void dio24_config(struct pcmcia_device *link) +{ + struct local_info_t *dev = link->priv; + int ret; + win_req_t req; - if ((cfg->mem.nwin > 0) || (dflt.mem.nwin > 0)) { - cistpl_mem_t *mem = - (cfg->mem.nwin) ? &cfg->mem : &dflt.mem; - req.Attributes = WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM; - req.Attributes |= WIN_ENABLE; - req.Base = mem->win[0].host_addr; - req.Size = mem->win[0].len; - if (req.Size < 0x1000) - req.Size = 0x1000; - req.AccessSpeed = 0; - if (pcmcia_request_window(&link, &req, &link->win)) - goto next_entry; - map.Page = 0; - map.CardOffset = mem->win[0].card_addr; - if (pcmcia_map_mem_page(link->win, &map)) - goto next_entry; - } - /* If we got this far, we're cool! */ - break; + printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO! - config\n"); -next_entry: + dev_dbg(&link->dev, "dio24_config\n"); - last_ret = pcmcia_get_next_tuple(link, &tuple); - if (last_ret) { - cs_error(link, GetNextTuple, last_ret); - goto cs_failed; - } + ret = pcmcia_loop_config(link, dio24_pcmcia_config_loop, &req); + if (ret) { + dev_warn(&link->dev, "no configuration found\n"); + goto failed; } /* @@ -471,11 +395,9 @@ next_entry: irq structure is initialized. */ if (link->conf.Attributes & CONF_ENABLE_IRQ) { - last_ret = pcmcia_request_irq(link, &link->irq); - if (last_ret) { - cs_error(link, RequestIRQ, last_ret); - goto cs_failed; - } + ret = pcmcia_request_irq(link, &link->irq); + if (ret) + goto failed; } /* @@ -483,11 +405,9 @@ next_entry: the I/O windows and the interrupt mapping, and putting the card and host interface into "Memory and IO" mode. */ - last_ret = pcmcia_request_configuration(link, &link->conf); - if (last_ret) { - cs_error(link, RequestConfiguration, last_ret); - goto cs_failed; - } + ret = pcmcia_request_configuration(link, &link->conf); + if (ret) + goto failed; /* At this point, the dev_node_t structure(s) need to be @@ -515,7 +435,7 @@ next_entry: return; -cs_failed: +failed: printk(KERN_INFO "Fallo"); dio24_release(link); @@ -523,7 +443,7 @@ cs_failed: static void dio24_release(struct pcmcia_device *link) { - DEBUG(0, "dio24_release(0x%p)\n", link); + dev_dbg(&link->dev, "dio24_release\n"); pcmcia_disable_device(link); } /* dio24_release */ @@ -582,14 +502,12 @@ struct pcmcia_driver dio24_cs_driver = { static int __init init_dio24_cs(void) { printk("ni_daq_dio24: HOLA SOY YO!\n"); - DEBUG(0, "%s\n", version); pcmcia_register_driver(&dio24_cs_driver); return 0; } static void __exit exit_dio24_cs(void) { - DEBUG(0, "ni_dio24: unloading\n"); pcmcia_unregister_driver(&dio24_cs_driver); } |