[IRDA]: nsc-ircc: ISAPnP support
This enables PnP support for the nsc-ircc chipset. Since we can't fetch the chipset cfg_base from the PnP layer, we just use the PnP information as one more hint when probing the chip. Signed-off-by: Jean Tourrilhes <jt@hpl.hp.com> Signed-off-by: Samuel Ortiz <samuel.ortiz@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jean Tourrilhes
David S. Miller
parent
4277a083ec
commit
ec4f32d550
@ -12,6 +12,7 @@
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* Copyright (c) 1998-2000 Dag Brattli <dagb@cs.uit.no>
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* Copyright (c) 1998 Lichen Wang, <lwang@actisys.com>
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* Copyright (c) 1998 Actisys Corp., www.actisys.com
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* Copyright (c) 2000-2004 Jean Tourrilhes <jt@hpl.hp.com>
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or
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@ -53,6 +54,7 @@
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#include <linux/init.h>
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#include <linux/rtnetlink.h>
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#include <linux/dma-mapping.h>
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#include <linux/pnp.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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@ -78,8 +80,8 @@ static int dongle_id;
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/* Use BIOS settions by default, but user may supply module parameters */
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static unsigned int io[] = { ~0, ~0, ~0, ~0 };
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static unsigned int irq[] = { 0, 0, 0, 0, 0 };
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static unsigned int dma[] = { 0, 0, 0, 0, 0 };
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static unsigned int irq[] = { 0, 0, 0, 0 };
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static unsigned int dma[] = { 0, 0, 0, 0 };
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static int nsc_ircc_probe_108(nsc_chip_t *chip, chipio_t *info);
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static int nsc_ircc_probe_338(nsc_chip_t *chip, chipio_t *info);
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@ -87,6 +89,7 @@ static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info);
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static int nsc_ircc_init_108(nsc_chip_t *chip, chipio_t *info);
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static int nsc_ircc_init_338(nsc_chip_t *chip, chipio_t *info);
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static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info);
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static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id);
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/* These are the known NSC chips */
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static nsc_chip_t chips[] = {
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@ -104,7 +107,6 @@ static nsc_chip_t chips[] = {
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{ NULL }
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};
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/* Max 4 instances for now */
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static struct nsc_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
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static char *dongle_types[] = {
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@ -126,8 +128,24 @@ static char *dongle_types[] = {
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"No dongle connected",
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};
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/* PNP probing */
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static chipio_t pnp_info;
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static const struct pnp_device_id nsc_ircc_pnp_table[] = {
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{ .id = "NSC6001", .driver_data = 0 },
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{ .id = "IBM0071", .driver_data = 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(pnp, nsc_ircc_pnp_table);
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static struct pnp_driver nsc_ircc_pnp_driver = {
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.name = "nsc-ircc",
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.id_table = nsc_ircc_pnp_table,
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.probe = nsc_ircc_pnp_probe,
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};
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/* Some prototypes */
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static int nsc_ircc_open(int i, chipio_t *info);
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static int nsc_ircc_open(chipio_t *info);
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static int nsc_ircc_close(struct nsc_ircc_cb *self);
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static int nsc_ircc_setup(chipio_t *info);
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static void nsc_ircc_pio_receive(struct nsc_ircc_cb *self);
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@ -148,6 +166,10 @@ static int nsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd
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static struct net_device_stats *nsc_ircc_net_get_stats(struct net_device *dev);
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static int nsc_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data);
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/* Globals */
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static int pnp_registered;
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static int pnp_succeeded;
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/*
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* Function nsc_ircc_init ()
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*
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@ -158,28 +180,30 @@ static int __init nsc_ircc_init(void)
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{
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chipio_t info;
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nsc_chip_t *chip;
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int ret = -ENODEV;
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int ret;
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int cfg_base;
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int cfg, id;
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int reg;
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int i = 0;
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/* Register with PnP subsystem to detect disable ports */
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ret = pnp_register_driver(&nsc_ircc_pnp_driver);
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if (ret >= 0)
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pnp_registered = 1;
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ret = -ENODEV;
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/* Probe for all the NSC chipsets we know about */
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for (chip=chips; chip->name ; chip++) {
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for (chip = chips; chip->name ; chip++) {
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IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __FUNCTION__,
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chip->name);
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/* Try all config registers for this chip */
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for (cfg=0; cfg<3; cfg++) {
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for (cfg = 0; cfg < ARRAY_SIZE(chip->cfg); cfg++) {
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cfg_base = chip->cfg[cfg];
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if (!cfg_base)
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continue;
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memset(&info, 0, sizeof(chipio_t));
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info.cfg_base = cfg_base;
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info.fir_base = io[i];
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info.dma = dma[i];
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info.irq = irq[i];
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/* Read index register */
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reg = inb(cfg_base);
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@ -194,24 +218,64 @@ static int __init nsc_ircc_init(void)
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if ((id & chip->cid_mask) == chip->cid_value) {
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IRDA_DEBUG(2, "%s() Found %s chip, revision=%d\n",
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__FUNCTION__, chip->name, id & ~chip->cid_mask);
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/*
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* If the user supplies the base address, then
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* we init the chip, if not we probe the values
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* set by the BIOS
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*/
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if (io[i] < 0x2000) {
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chip->init(chip, &info);
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} else
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chip->probe(chip, &info);
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if (nsc_ircc_open(i, &info) == 0)
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ret = 0;
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/*
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* If we found a correct PnP setting,
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* we first try it.
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*/
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if (pnp_succeeded) {
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memset(&info, 0, sizeof(chipio_t));
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info.cfg_base = cfg_base;
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info.fir_base = pnp_info.fir_base;
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info.dma = pnp_info.dma;
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info.irq = pnp_info.irq;
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if (info.fir_base < 0x2000) {
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IRDA_MESSAGE("%s, chip->init\n", driver_name);
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chip->init(chip, &info);
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} else
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chip->probe(chip, &info);
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if (nsc_ircc_open(&info) >= 0)
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ret = 0;
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}
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/*
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* Opening based on PnP values failed.
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* Let's fallback to user values, or probe
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* the chip.
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*/
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if (ret) {
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IRDA_DEBUG(2, "%s, PnP init failed\n", driver_name);
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memset(&info, 0, sizeof(chipio_t));
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info.cfg_base = cfg_base;
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info.fir_base = io[i];
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info.dma = dma[i];
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info.irq = irq[i];
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/*
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* If the user supplies the base address, then
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* we init the chip, if not we probe the values
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* set by the BIOS
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*/
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if (io[i] < 0x2000) {
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chip->init(chip, &info);
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} else
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chip->probe(chip, &info);
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if (nsc_ircc_open(&info) >= 0)
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ret = 0;
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}
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i++;
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} else {
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IRDA_DEBUG(2, "%s(), Wrong chip id=0x%02x\n", __FUNCTION__, id);
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}
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}
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}
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if (ret) {
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pnp_unregister_driver(&nsc_ircc_pnp_driver);
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pnp_registered = 0;
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}
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return ret;
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@ -229,10 +293,15 @@ static void __exit nsc_ircc_cleanup(void)
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pm_unregister_all(nsc_ircc_pmproc);
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for (i=0; i < 4; i++) {
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for (i = 0; i < ARRAY_SIZE(dev_self); i++) {
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if (dev_self[i])
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nsc_ircc_close(dev_self[i]);
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}
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if (pnp_registered)
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pnp_unregister_driver(&nsc_ircc_pnp_driver);
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pnp_registered = 0;
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}
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/*
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@ -241,16 +310,27 @@ static void __exit nsc_ircc_cleanup(void)
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* Open driver instance
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*
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*/
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static int __init nsc_ircc_open(int i, chipio_t *info)
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static int __init nsc_ircc_open(chipio_t *info)
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{
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struct net_device *dev;
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struct nsc_ircc_cb *self;
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struct pm_dev *pmdev;
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struct pm_dev *pmdev;
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void *ret;
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int err;
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int err, chip_index;
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IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
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for (chip_index = 0; chip_index < ARRAY_SIZE(dev_self); chip_index++) {
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if (!dev_self[chip_index])
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break;
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}
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if (chip_index == ARRAY_SIZE(dev_self)) {
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IRDA_ERROR("%s(), maximum number of supported chips reached!\n", __FUNCTION__);
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return -ENOMEM;
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}
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IRDA_MESSAGE("%s, Found chip at base=0x%03x\n", driver_name,
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info->cfg_base);
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@ -271,8 +351,8 @@ static int __init nsc_ircc_open(int i, chipio_t *info)
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spin_lock_init(&self->lock);
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/* Need to store self somewhere */
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dev_self[i] = self;
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self->index = i;
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dev_self[chip_index] = self;
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self->index = chip_index;
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/* Initialize IO */
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self->io.cfg_base = info->cfg_base;
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@ -351,7 +431,7 @@ static int __init nsc_ircc_open(int i, chipio_t *info)
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/* Check if user has supplied a valid dongle id or not */
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if ((dongle_id <= 0) ||
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(dongle_id >= (sizeof(dongle_types) / sizeof(dongle_types[0]))) ) {
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(dongle_id >= ARRAY_SIZE(dongle_types))) {
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dongle_id = nsc_ircc_read_dongle_id(self->io.fir_base);
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IRDA_MESSAGE("%s, Found dongle: %s\n", driver_name,
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@ -368,7 +448,7 @@ static int __init nsc_ircc_open(int i, chipio_t *info)
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if (pmdev)
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pmdev->data = self;
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return 0;
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return chip_index;
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out4:
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dma_free_coherent(NULL, self->tx_buff.truesize,
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self->tx_buff.head, self->tx_buff_dma);
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@ -379,7 +459,7 @@ static int __init nsc_ircc_open(int i, chipio_t *info)
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release_region(self->io.fir_base, self->io.fir_ext);
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out1:
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free_netdev(dev);
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dev_self[i] = NULL;
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dev_self[chip_index] = NULL;
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return err;
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}
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@ -806,6 +886,43 @@ static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info)
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return 0;
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}
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/* PNP probing */
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static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id)
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{
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memset(&pnp_info, 0, sizeof(chipio_t));
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pnp_info.irq = -1;
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pnp_info.dma = -1;
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pnp_succeeded = 1;
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/* There don't seem to be any way to get the cfg_base.
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* On my box, cfg_base is in the PnP descriptor of the
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* motherboard. Oh well... Jean II */
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if (pnp_port_valid(dev, 0) &&
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!(pnp_port_flags(dev, 0) & IORESOURCE_DISABLED))
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pnp_info.fir_base = pnp_port_start(dev, 0);
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if (pnp_irq_valid(dev, 0) &&
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!(pnp_irq_flags(dev, 0) & IORESOURCE_DISABLED))
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pnp_info.irq = pnp_irq(dev, 0);
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if (pnp_dma_valid(dev, 0) &&
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!(pnp_dma_flags(dev, 0) & IORESOURCE_DISABLED))
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pnp_info.dma = pnp_dma(dev, 0);
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IRDA_DEBUG(0, "%s() : From PnP, found firbase 0x%03X ; irq %d ; dma %d.\n",
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__FUNCTION__, pnp_info.fir_base, pnp_info.irq, pnp_info.dma);
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if((pnp_info.fir_base == 0) ||
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(pnp_info.irq == -1) || (pnp_info.dma == -1)) {
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/* Returning an error will disable the device. Yuck ! */
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//return -EINVAL;
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pnp_succeeded = 0;
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}
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return 0;
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}
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/*
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* Function nsc_ircc_setup (info)
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*
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