diff options
Diffstat (limited to 'drivers/parport/daisy.c')
| -rw-r--r-- | drivers/parport/daisy.c | 212 |
1 files changed, 106 insertions, 106 deletions
diff --git a/drivers/parport/daisy.c b/drivers/parport/daisy.c index fd41e28101ea..83ee095ec6e2 100644 --- a/drivers/parport/daisy.c +++ b/drivers/parport/daisy.c @@ -30,7 +30,7 @@ #undef DEBUG #ifdef DEBUG -#define DPRINTK(stuff...) printk (stuff) +#define DPRINTK(stuff...) printk(stuff) #else #define DPRINTK(stuff...) #endif @@ -46,16 +46,16 @@ static DEFINE_SPINLOCK(topology_lock); static int numdevs = 0; /* Forward-declaration of lower-level functions. */ -static int mux_present (struct parport *port); -static int num_mux_ports (struct parport *port); -static int select_port (struct parport *port); -static int assign_addrs (struct parport *port); +static int mux_present(struct parport *port); +static int num_mux_ports(struct parport *port); +static int select_port(struct parport *port); +static int assign_addrs(struct parport *port); /* Add a device to the discovered topology. */ -static void add_dev (int devnum, struct parport *port, int daisy) +static void add_dev(int devnum, struct parport *port, int daisy) { struct daisydev *newdev, **p; - newdev = kmalloc (sizeof (struct daisydev), GFP_KERNEL); + newdev = kmalloc(sizeof(struct daisydev), GFP_KERNEL); if (newdev) { newdev->port = port; newdev->daisy = daisy; @@ -70,9 +70,9 @@ static void add_dev (int devnum, struct parport *port, int daisy) } /* Clone a parport (actually, make an alias). */ -static struct parport *clone_parport (struct parport *real, int muxport) +static struct parport *clone_parport(struct parport *real, int muxport) { - struct parport *extra = parport_register_port (real->base, + struct parport *extra = parport_register_port(real->base, real->irq, real->dma, real->ops); @@ -88,7 +88,7 @@ static struct parport *clone_parport (struct parport *real, int muxport) /* Discover the IEEE1284.3 topology on a port -- muxes and daisy chains. * Return value is number of devices actually detected. */ -int parport_daisy_init (struct parport *port) +int parport_daisy_init(struct parport *port) { int detected = 0; char *deviceid; @@ -103,26 +103,26 @@ again: /* If mux present on normal port, need to create new * parports for each extra port. */ - if (port->muxport < 0 && mux_present (port) && + if (port->muxport < 0 && mux_present(port) && /* don't be fooled: a mux must have 2 or 4 ports. */ - ((num_ports = num_mux_ports (port)) == 2 || num_ports == 4)) { + ((num_ports = num_mux_ports(port)) == 2 || num_ports == 4)) { /* Leave original as port zero. */ port->muxport = 0; - printk (KERN_INFO + printk(KERN_INFO "%s: 1st (default) port of %d-way multiplexor\n", port->name, num_ports); for (i = 1; i < num_ports; i++) { /* Clone the port. */ - struct parport *extra = clone_parport (port, i); + struct parport *extra = clone_parport(port, i); if (!extra) { - if (signal_pending (current)) + if (signal_pending(current)) break; - schedule (); + schedule(); continue; } - printk (KERN_INFO + printk(KERN_INFO "%s: %d%s port of %d-way multiplexor on %s\n", extra->name, i + 1, th[i + 1], num_ports, port->name); @@ -135,34 +135,34 @@ again: } if (port->muxport >= 0) - select_port (port); + select_port(port); - parport_daisy_deselect_all (port); - detected += assign_addrs (port); + parport_daisy_deselect_all(port); + detected += assign_addrs(port); /* Count the potential legacy device at the end. */ - add_dev (numdevs++, port, -1); + add_dev(numdevs++, port, -1); /* Find out the legacy device's IEEE 1284 device ID. */ - deviceid = kmalloc (1024, GFP_KERNEL); + deviceid = kmalloc(1024, GFP_KERNEL); if (deviceid) { - if (parport_device_id (numdevs - 1, deviceid, 1024) > 2) + if (parport_device_id(numdevs - 1, deviceid, 1024) > 2) detected++; - kfree (deviceid); + kfree(deviceid); } if (!detected && !last_try) { /* No devices were detected. Perhaps they are in some funny state; let's try to reset them and see if they wake up. */ - parport_daisy_fini (port); - parport_write_control (port, PARPORT_CONTROL_SELECT); - udelay (50); - parport_write_control (port, + parport_daisy_fini(port); + parport_write_control(port, PARPORT_CONTROL_SELECT); + udelay(50); + parport_write_control(port, PARPORT_CONTROL_SELECT | PARPORT_CONTROL_INIT); - udelay (50); + udelay(50); last_try = 1; goto again; } @@ -171,7 +171,7 @@ again: } /* Forget about devices on a physical port. */ -void parport_daisy_fini (struct parport *port) +void parport_daisy_fini(struct parport *port) { struct daisydev **p; @@ -214,7 +214,7 @@ void parport_daisy_fini (struct parport *port) * for parport_register_device(). **/ -struct pardevice *parport_open (int devnum, const char *name, +struct pardevice *parport_open(int devnum, const char *name, int (*pf) (void *), void (*kf) (void *), void (*irqf) (int, void *, struct pt_regs *), int flags, void *handle) @@ -237,7 +237,7 @@ struct pardevice *parport_open (int devnum, const char *name, port = parport_get_port(p->port); spin_unlock(&topology_lock); - dev = parport_register_device (port, name, pf, kf, + dev = parport_register_device(port, name, pf, kf, irqf, flags, handle); parport_put_port(port); if (!dev) @@ -248,13 +248,13 @@ struct pardevice *parport_open (int devnum, const char *name, /* Check that there really is a device to select. */ if (daisy >= 0) { int selected; - parport_claim_or_block (dev); + parport_claim_or_block(dev); selected = port->daisy; - parport_release (dev); + parport_release(dev); if (selected != daisy) { /* No corresponding device. */ - parport_unregister_device (dev); + parport_unregister_device(dev); return NULL; } } @@ -270,9 +270,9 @@ struct pardevice *parport_open (int devnum, const char *name, * parport_register_device(). **/ -void parport_close (struct pardevice *dev) +void parport_close(struct pardevice *dev) { - parport_unregister_device (dev); + parport_unregister_device(dev); } /** @@ -287,7 +287,7 @@ void parport_close (struct pardevice *dev) * exists. **/ -int parport_device_num (int parport, int mux, int daisy) +int parport_device_num(int parport, int mux, int daisy) { int res = -ENXIO; struct daisydev *dev; @@ -305,16 +305,16 @@ int parport_device_num (int parport, int mux, int daisy) } /* Send a daisy-chain-style CPP command packet. */ -static int cpp_daisy (struct parport *port, int cmd) +static int cpp_daisy(struct parport *port, int cmd) { unsigned char s; - parport_data_forward (port); - parport_write_data (port, 0xaa); udelay (2); - parport_write_data (port, 0x55); udelay (2); - parport_write_data (port, 0x00); udelay (2); - parport_write_data (port, 0xff); udelay (2); - s = parport_read_status (port) & (PARPORT_STATUS_BUSY + parport_data_forward(port); + parport_write_data(port, 0xaa); udelay(2); + parport_write_data(port, 0x55); udelay(2); + parport_write_data(port, 0x00); udelay(2); + parport_write_data(port, 0xff); udelay(2); + s = parport_read_status(port) & (PARPORT_STATUS_BUSY | PARPORT_STATUS_PAPEROUT | PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR); @@ -322,54 +322,54 @@ static int cpp_daisy (struct parport *port, int cmd) | PARPORT_STATUS_PAPEROUT | PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) { - DPRINTK (KERN_DEBUG "%s: cpp_daisy: aa5500ff(%02x)\n", + DPRINTK(KERN_DEBUG "%s: cpp_daisy: aa5500ff(%02x)\n", port->name, s); return -ENXIO; } - parport_write_data (port, 0x87); udelay (2); - s = parport_read_status (port) & (PARPORT_STATUS_BUSY + parport_write_data(port, 0x87); udelay(2); + s = parport_read_status(port) & (PARPORT_STATUS_BUSY | PARPORT_STATUS_PAPEROUT | PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR); if (s != (PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) { - DPRINTK (KERN_DEBUG "%s: cpp_daisy: aa5500ff87(%02x)\n", + DPRINTK(KERN_DEBUG "%s: cpp_daisy: aa5500ff87(%02x)\n", port->name, s); return -ENXIO; } - parport_write_data (port, 0x78); udelay (2); - parport_write_data (port, cmd); udelay (2); - parport_frob_control (port, + parport_write_data(port, 0x78); udelay(2); + parport_write_data(port, cmd); udelay(2); + parport_frob_control(port, PARPORT_CONTROL_STROBE, PARPORT_CONTROL_STROBE); - udelay (1); - s = parport_read_status (port); - parport_frob_control (port, PARPORT_CONTROL_STROBE, 0); - udelay (1); - parport_write_data (port, 0xff); udelay (2); + udelay(1); + s = parport_read_status(port); + parport_frob_control(port, PARPORT_CONTROL_STROBE, 0); + udelay(1); + parport_write_data(port, 0xff); udelay(2); return s; } /* Send a mux-style CPP command packet. */ -static int cpp_mux (struct parport *port, int cmd) +static int cpp_mux(struct parport *port, int cmd) { unsigned char s; int rc; - parport_data_forward (port); - parport_write_data (port, 0xaa); udelay (2); - parport_write_data (port, 0x55); udelay (2); - parport_write_data (port, 0xf0); udelay (2); - parport_write_data (port, 0x0f); udelay (2); - parport_write_data (port, 0x52); udelay (2); - parport_write_data (port, 0xad); udelay (2); - parport_write_data (port, cmd); udelay (2); + parport_data_forward(port); + parport_write_data(port, 0xaa); udelay(2); + parport_write_data(port, 0x55); udelay(2); + parport_write_data(port, 0xf0); udelay(2); + parport_write_data(port, 0x0f); udelay(2); + parport_write_data(port, 0x52); udelay(2); + parport_write_data(port, 0xad); udelay(2); + parport_write_data(port, cmd); udelay(2); - s = parport_read_status (port); + s = parport_read_status(port); if (!(s & PARPORT_STATUS_ACK)) { - DPRINTK (KERN_DEBUG "%s: cpp_mux: aa55f00f52ad%02x(%02x)\n", + DPRINTK(KERN_DEBUG "%s: cpp_mux: aa55f00f52ad%02x(%02x)\n", port->name, cmd, s); return -EIO; } @@ -382,12 +382,12 @@ static int cpp_mux (struct parport *port, int cmd) return rc; } -void parport_daisy_deselect_all (struct parport *port) +void parport_daisy_deselect_all(struct parport *port) { - cpp_daisy (port, 0x30); + cpp_daisy(port, 0x30); } -int parport_daisy_select (struct parport *port, int daisy, int mode) +int parport_daisy_select(struct parport *port, int daisy, int mode) { switch (mode) { @@ -395,14 +395,14 @@ int parport_daisy_select (struct parport *port, int daisy, int mode) case IEEE1284_MODE_EPP: case IEEE1284_MODE_EPPSL: case IEEE1284_MODE_EPPSWE: - return !(cpp_daisy (port, 0x20 + daisy) & + return !(cpp_daisy(port, 0x20 + daisy) & PARPORT_STATUS_ERROR); // For these modes we should switch to ECP mode: case IEEE1284_MODE_ECP: case IEEE1284_MODE_ECPRLE: case IEEE1284_MODE_ECPSWE: - return !(cpp_daisy (port, 0xd0 + daisy) & + return !(cpp_daisy(port, 0xd0 + daisy) & PARPORT_STATUS_ERROR); // Nothing was told for BECP in Daisy chain specification. @@ -413,28 +413,28 @@ int parport_daisy_select (struct parport *port, int daisy, int mode) case IEEE1284_MODE_BYTE: case IEEE1284_MODE_COMPAT: default: - return !(cpp_daisy (port, 0xe0 + daisy) & + return !(cpp_daisy(port, 0xe0 + daisy) & PARPORT_STATUS_ERROR); } } -static int mux_present (struct parport *port) +static int mux_present(struct parport *port) { - return cpp_mux (port, 0x51) == 3; + return cpp_mux(port, 0x51) == 3; } -static int num_mux_ports (struct parport *port) +static int num_mux_ports(struct parport *port) { - return cpp_mux (port, 0x58); + return cpp_mux(port, 0x58); } -static int select_port (struct parport *port) +static int select_port(struct parport *port) { int muxport = port->muxport; - return cpp_mux (port, 0x60 + muxport) == muxport; + return cpp_mux(port, 0x60 + muxport) == muxport; } -static int assign_addrs (struct parport *port) +static int assign_addrs(struct parport *port) { unsigned char s; unsigned char daisy; @@ -442,12 +442,12 @@ static int assign_addrs (struct parport *port) int detected; char *deviceid; - parport_data_forward (port); - parport_write_data (port, 0xaa); udelay (2); - parport_write_data (port, 0x55); udelay (2); - parport_write_data (port, 0x00); udelay (2); - parport_write_data (port, 0xff); udelay (2); - s = parport_read_status (port) & (PARPORT_STATUS_BUSY + parport_data_forward(port); + parport_write_data(port, 0xaa); udelay(2); + parport_write_data(port, 0x55); udelay(2); + parport_write_data(port, 0x00); udelay(2); + parport_write_data(port, 0xff); udelay(2); + s = parport_read_status(port) & (PARPORT_STATUS_BUSY | PARPORT_STATUS_PAPEROUT | PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR); @@ -455,40 +455,40 @@ static int assign_addrs (struct parport *port) | PARPORT_STATUS_PAPEROUT | PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) { - DPRINTK (KERN_DEBUG "%s: assign_addrs: aa5500ff(%02x)\n", + DPRINTK(KERN_DEBUG "%s: assign_addrs: aa5500ff(%02x)\n", port->name, s); return 0; } - parport_write_data (port, 0x87); udelay (2); - s = parport_read_status (port) & (PARPORT_STATUS_BUSY + parport_write_data(port, 0x87); udelay(2); + s = parport_read_status(port) & (PARPORT_STATUS_BUSY | PARPORT_STATUS_PAPEROUT | PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR); if (s != (PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) { - DPRINTK (KERN_DEBUG "%s: assign_addrs: aa5500ff87(%02x)\n", + DPRINTK(KERN_DEBUG "%s: assign_addrs: aa5500ff87(%02x)\n", port->name, s); return 0; } - parport_write_data (port, 0x78); udelay (2); - s = parport_read_status (port); + parport_write_data(port, 0x78); udelay(2); + s = parport_read_status(port); for (daisy = 0; (s & (PARPORT_STATUS_PAPEROUT|PARPORT_STATUS_SELECT)) == (PARPORT_STATUS_PAPEROUT|PARPORT_STATUS_SELECT) && daisy < 4; ++daisy) { - parport_write_data (port, daisy); - udelay (2); - parport_frob_control (port, + parport_write_data(port, daisy); + udelay(2); + parport_frob_control(port, PARPORT_CONTROL_STROBE, PARPORT_CONTROL_STROBE); - udelay (1); - parport_frob_control (port, PARPORT_CONTROL_STROBE, 0); - udelay (1); + udelay(1); + parport_frob_control(port, PARPORT_CONTROL_STROBE, 0); + udelay(1); - add_dev (numdevs++, port, daisy); + add_dev(numdevs++, port, daisy); /* See if this device thought it was the last in the * chain. */ @@ -499,21 +499,21 @@ static int assign_addrs (struct parport *port) last_dev from next device or if last_dev does not work status lines from some non-daisy chain device. */ - s = parport_read_status (port); + s = parport_read_status(port); } - parport_write_data (port, 0xff); udelay (2); + parport_write_data(port, 0xff); udelay(2); detected = numdevs - thisdev; - DPRINTK (KERN_DEBUG "%s: Found %d daisy-chained devices\n", port->name, + DPRINTK(KERN_DEBUG "%s: Found %d daisy-chained devices\n", port->name, detected); /* Ask the new devices to introduce themselves. */ - deviceid = kmalloc (1024, GFP_KERNEL); + deviceid = kmalloc(1024, GFP_KERNEL); if (!deviceid) return 0; for (daisy = 0; thisdev < numdevs; thisdev++, daisy++) - parport_device_id (thisdev, deviceid, 1024); + parport_device_id(thisdev, deviceid, 1024); - kfree (deviceid); + kfree(deviceid); return detected; } |