diff options
Diffstat (limited to 'drivers/net/irda/smsc-ircc2.c')
| -rw-r--r-- | drivers/net/irda/smsc-ircc2.c | 112 |
1 files changed, 83 insertions, 29 deletions
diff --git a/drivers/net/irda/smsc-ircc2.c b/drivers/net/irda/smsc-ircc2.c index 198bf3bfa70..9043bf4aa49 100644 --- a/drivers/net/irda/smsc-ircc2.c +++ b/drivers/net/irda/smsc-ircc2.c @@ -79,11 +79,17 @@ MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>"); MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver"); MODULE_LICENSE("GPL"); -static int ircc_dma = 255; +static int smsc_nopnp; +module_param_named(nopnp, smsc_nopnp, bool, 0); +MODULE_PARM_DESC(nopnp, "Do not use PNP to detect controller settings"); + +#define DMA_INVAL 255 +static int ircc_dma = DMA_INVAL; module_param(ircc_dma, int, 0); MODULE_PARM_DESC(ircc_dma, "DMA channel"); -static int ircc_irq = 255; +#define IRQ_INVAL 255 +static int ircc_irq = IRQ_INVAL; module_param(ircc_irq, int, 0); MODULE_PARM_DESC(ircc_irq, "IRQ line"); @@ -360,7 +366,6 @@ static inline void register_bank(int iobase, int bank) iobase + IRCC_MASTER); } -#ifdef CONFIG_PNP /* PNP hotplug support */ static const struct pnp_device_id smsc_ircc_pnp_table[] = { { .id = "SMCf010", .driver_data = 0 }, @@ -368,7 +373,35 @@ static const struct pnp_device_id smsc_ircc_pnp_table[] = { { } }; MODULE_DEVICE_TABLE(pnp, smsc_ircc_pnp_table); -#endif + +static int pnp_driver_registered; + +static int __init smsc_ircc_pnp_probe(struct pnp_dev *dev, + const struct pnp_device_id *dev_id) +{ + unsigned int firbase, sirbase; + u8 dma, irq; + + if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && + pnp_dma_valid(dev, 0) && pnp_irq_valid(dev, 0))) + return -EINVAL; + + sirbase = pnp_port_start(dev, 0); + firbase = pnp_port_start(dev, 1); + dma = pnp_dma(dev, 0); + irq = pnp_irq(dev, 0); + + if (smsc_ircc_open(firbase, sirbase, dma, irq)) + return -ENODEV; + + return 0; +} + +static struct pnp_driver smsc_ircc_pnp_driver = { + .name = "smsc-ircc2", + .id_table = smsc_ircc_pnp_table, + .probe = smsc_ircc_pnp_probe, +}; /******************************************************************************* @@ -379,6 +412,35 @@ MODULE_DEVICE_TABLE(pnp, smsc_ircc_pnp_table); * *******************************************************************************/ +static int __init smsc_ircc_legacy_probe(void) +{ + int ret = 0; + + if (ircc_fir > 0 && ircc_sir > 0) { + IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir); + IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir); + + if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq)) + ret = -ENODEV; + } else { + ret = -ENODEV; + + /* try user provided configuration register base address */ + if (ircc_cfg > 0) { + IRDA_MESSAGE(" Overriding configuration address " + "0x%04x\n", ircc_cfg); + if (!smsc_superio_fdc(ircc_cfg)) + ret = 0; + if (!smsc_superio_lpc(ircc_cfg)) + ret = 0; + } + + if (smsc_ircc_look_for_chips() > 0) + ret = 0; + } + return ret; +} + /* * Function smsc_ircc_init () * @@ -406,31 +468,20 @@ static int __init smsc_ircc_init(void) dev_count = 0; - if (ircc_fir > 0 && ircc_sir > 0) { - IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir); - IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir); - - if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq)) - ret = -ENODEV; + if (smsc_nopnp || !pnp_platform_devices || + ircc_cfg || ircc_fir || ircc_sir || + ircc_dma != DMA_INVAL || ircc_irq != IRQ_INVAL) { + ret = smsc_ircc_legacy_probe(); } else { - ret = -ENODEV; - - /* try user provided configuration register base address */ - if (ircc_cfg > 0) { - IRDA_MESSAGE(" Overriding configuration address " - "0x%04x\n", ircc_cfg); - if (!smsc_superio_fdc(ircc_cfg)) - ret = 0; - if (!smsc_superio_lpc(ircc_cfg)) - ret = 0; - } - - if (smsc_ircc_look_for_chips() > 0) - ret = 0; + if (pnp_register_driver(&smsc_ircc_pnp_driver) == 0) + pnp_driver_registered = 1; } - if (ret) + if (ret) { + if (pnp_driver_registered) + pnp_unregister_driver(&smsc_ircc_pnp_driver); platform_driver_unregister(&smsc_ircc_driver); + } return ret; } @@ -646,7 +697,7 @@ static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE; self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED; - if (irq < 255) { + if (irq != IRQ_INVAL) { if (irq != chip_irq) IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n", driver_name, chip_irq, irq); @@ -654,7 +705,7 @@ static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, } else self->io.irq = chip_irq; - if (dma < 255) { + if (dma != DMA_INVAL) { if (dma != chip_dma) IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n", driver_name, chip_dma, dma); @@ -1840,6 +1891,9 @@ static void __exit smsc_ircc_cleanup(void) smsc_ircc_close(dev_self[i]); } + if (pnp_driver_registered) + pnp_unregister_driver(&smsc_ircc_pnp_driver); + platform_driver_unregister(&smsc_ircc_driver); } @@ -2836,9 +2890,9 @@ static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg, tmpconf.fir_io = ircc_fir; if (ircc_sir != 0) tmpconf.sir_io = ircc_sir; - if (ircc_dma != 0xff) + if (ircc_dma != DMA_INVAL) tmpconf.fir_dma = ircc_dma; - if (ircc_irq != 0xff) + if (ircc_irq != IRQ_INVAL) tmpconf.fir_irq = ircc_irq; IRDA_MESSAGE("Detected unconfigured %s SMSC IrDA chip, pre-configuring device.\n", conf->name); |