litmus-rt.git - The LITMUS^RT kernel.

diff options

author	Andriy Skulysh <askulysh@image.kiev.ua>	2006-02-01 06:06:53 -0500
committer	Linus Torvalds <torvalds@g5.osdl.org>	2006-02-01 11:53:26 -0500
commit	06c6f90032e39d33d02ab20f32e3f3cd87f58d28 (patch)
tree	9dc9deed276b137c9ef1749b937602719934d97c /drivers/acpi/system.c
parent	9477e260b7ca3b6076b91eae15739383c508f3e2 (diff)

[PATCH] video: hp680 backlight driver

This adds support for the hp680 backlight, as found in the hp6xx series of sh devices. Signed-off-by: Andriy Skulysh <askulysh@image.kiev.ua> Signed-off-by: Paul Mundt <lethal@linux-sh.org> Acked-by: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Diffstat (limited to 'drivers/acpi/system.c')

0 files changed, 0 insertions, 0 deletions

/* * Linux ARCnet driver - COM20020 chipset support * * Written 1997 by David Woodhouse. * Written 1994-1999 by Avery Pennarun. * Written 1999 by Martin Mares <mj@ucw.cz>. * Derived from skeleton.c by Donald Becker. * * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com) * for sponsoring the further development of this driver. * * ********************** * * The original copyright of skeleton.c was as follows: * * skeleton.c Written 1993 by Donald Becker. * Copyright 1993 United States Government as represented by the * Director, National Security Agency. This software may only be used * and distributed according to the terms of the GNU General Public License as * modified by SRC, incorporated herein by reference. * * ********************** * * For more details, see drivers/net/arcnet.c * * ********************** */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/types.h> #include <linux/ioport.h> #include <linux/slab.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/init.h> #include <linux/arcdevice.h> #include <linux/com20020.h> #include <asm/io.h> #define VERSION "arcnet: COM20020 chipset support (by David Woodhouse et al.)\n" static char *clockrates[] = {"10 Mb/s", "Reserved", "5 Mb/s", "2.5 Mb/s", "1.25Mb/s", "625 Kb/s", "312.5 Kb/s", "156.25 Kb/s", "Reserved", "Reserved", "Reserved"}; static void com20020_command(struct net_device *dev, int command); static int com20020_status(struct net_device *dev); static void com20020_setmask(struct net_device *dev, int mask); static int com20020_reset(struct net_device *dev, int really_reset); static void com20020_copy_to_card(struct net_device *dev, int bufnum, int offset, void *buf, int count); static void com20020_copy_from_card(struct net_device *dev, int bufnum, int offset, void *buf, int count); static void com20020_set_mc_list(struct net_device *dev); static void com20020_close(struct net_device *); static void com20020_copy_from_card(struct net_device *dev, int bufnum, int offset, void *buf, int count) { int ioaddr = dev->base_addr, ofs = 512 * bufnum + offset; /* set up the address register */ outb((ofs >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI); outb(ofs & 0xff, _ADDR_LO); /* copy the data */ TIME("insb", count, insb(_MEMDATA, buf, count)); } static void com20020_copy_to_card(struct net_device *dev, int bufnum, int offset, void *buf, int count) { int ioaddr = dev->base_addr, ofs = 512 * bufnum + offset; /* set up the address register */ outb((ofs >> 8) | AUTOINCflag, _ADDR_HI); outb(ofs & 0xff, _ADDR_LO); /* copy the data */ TIME("outsb", count, outsb(_MEMDATA, buf, count)); } /* Reset the card and check some basic stuff during the detection stage. */ int com20020_check(struct net_device *dev) { int ioaddr = dev->base_addr, status; struct arcnet_local *lp = dev->priv; ARCRESET0; mdelay(RESETtime); lp->setup = lp->clockm ? 0 : (lp->clockp << 1); lp->setup2 = (lp->clockm << 4) | 8; /* CHECK: should we do this for SOHARD cards ? */ /* Enable P1Mode for backplane mode */ lp->setup = lp->setup | P1MODE; SET_SUBADR(SUB_SETUP1); outb(lp->setup, _XREG); if (lp->card_flags & ARC_CAN_10MBIT) { SET_SUBADR(SUB_SETUP2); outb(lp->setup2, _XREG); /* must now write the magic "restart operation" command */ mdelay(1); outb(0x18, _COMMAND); } lp->config = 0x21 | (lp->timeout << 3) | (lp->backplane << 2); /* set node ID to 0x42 (but transmitter is disabled, so it's okay) */ SETCONF; outb(0x42, ioaddr + BUS_ALIGN*7); status = ASTATUS(); if ((status & 0x99) != (NORXflag | TXFREEflag | RESETflag)) { BUGMSG(D_NORMAL, "status invalid (%Xh).\n", status); return -ENODEV; } BUGMSG(D_INIT_REASONS, "status after reset: %X\n", status); /* Enable TX */ outb(0x39, _CONFIG); outb(inb(ioaddr + BUS_ALIGN*8), ioaddr + BUS_ALIGN*7); ACOMMAND(CFLAGScmd | RESETclear | CONFIGclear); status = ASTATUS(); BUGMSG(D_INIT_REASONS, "status after reset acknowledged: %X\n", status); /* Read first location of memory */ outb(0 | RDDATAflag | AUTOINCflag, _ADDR_HI); outb(0, _ADDR_LO); if ((status = inb(_MEMDATA)) != TESTvalue) { BUGMSG(D_NORMAL, "Signature byte not found (%02Xh != D1h).\n", status); return -ENODEV; } return 0; } /* Set up the struct net_device associated with this card. Called after * probing succeeds. */ int com20020_found(struct net_device *dev, int shared) { struct arcnet_local *lp; int ioaddr = dev->base_addr; /* Initialize the rest of the device structure. */ lp = dev->priv; lp->hw.owner = THIS_MODULE; lp->hw.command = com20020_command; lp->hw.status = com20020_status; lp->hw.intmask = com20020_setmask; lp->hw.reset = com20020_reset; lp->hw.copy_to_card = com20020_copy_to_card; lp->hw.copy_from_card = com20020_copy_from_card; lp->hw.close = com20020_close; dev->set_multicast_list = com20020_set_mc_list; if (!dev->dev_addr[0]) dev->dev_addr[0] = inb(ioaddr + BUS_ALIGN*8); /* FIXME: do this some other way! */ SET_SUBADR(SUB_SETUP1); outb(lp->setup, _XREG); if (lp->card_flags & ARC_CAN_10MBIT) { SET_SUBADR(SUB_SETUP2); outb(lp->setup2, _XREG); /* must now write the magic "restart operation" command */ mdelay(1); outb(0x18, _COMMAND); } lp->config = 0x20 | (lp->timeout << 3) | (lp->backplane << 2) | 1; /* Default 0x38 + register: Node ID */ SETCONF; outb(dev->dev_addr[0], _XREG); /* reserve the irq */ if (request_irq(dev->irq, &arcnet_interrupt, shared, "arcnet (COM20020)", dev)) { BUGMSG(D_NORMAL, "Can't get IRQ %d!\n", dev->irq); return -ENODEV; } dev->base_addr = ioaddr; BUGMSG(D_NORMAL, "%s: station %02Xh found at %03lXh, IRQ %d.\n", lp->card_name, dev->dev_addr[0], dev->base_addr, dev->irq); if (lp->backplane) BUGMSG(D_NORMAL, "Using backplane mode.\n"); if (lp->timeout != 3) BUGMSG(D_NORMAL, "Using extended timeout value of %d.\n", lp->timeout); BUGMSG(D_NORMAL, "Using CKP %d - data rate %s.\n", lp->setup >> 1, clockrates[3 - ((lp->setup2 & 0xF0) >> 4) + ((lp->setup & 0x0F) >> 1)]); if (register_netdev(dev)) { free_irq(dev->irq, dev); return -EIO; } return 0; } /* * Do a hardware reset on the card, and set up necessary registers. * * This should be called as little as possible, because it disrupts the * token on the network (causes a RECON) and requires a significant delay. * * However, it does make sure the card is in a defined state. */ static int com20020_reset(struct net_device *dev, int really_reset) { struct arcnet_local *lp = dev->priv; u_int ioaddr = dev->base_addr; u_char inbyte; BUGMSG(D_DEBUG, "%s: %d: %s: dev: %p, lp: %p, dev->name: %s\n", __FILE__,__LINE__,__FUNCTION__,dev,lp,dev->name); BUGMSG(D_INIT, "Resetting %s (status=%02Xh)\n", dev->name, ASTATUS()); BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__FUNCTION__); lp->config = TXENcfg | (lp->timeout << 3) | (lp->backplane << 2); /* power-up defaults */ SETCONF; BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__FUNCTION__); if (really_reset) { /* reset the card */ ARCRESET; mdelay(RESETtime * 2); /* COM20020 seems to be slower sometimes */ } /* clear flags & end reset */ BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__FUNCTION__); ACOMMAND(CFLAGScmd | RESETclear | CONFIGclear); /* verify that the ARCnet signature byte is present */ BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__FUNCTION__); com20020_copy_from_card(dev, 0, 0, &inbyte, 1); BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__FUNCTION__); if (inbyte != TESTvalue) { BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__FUNCTION__); BUGMSG(D_NORMAL, "reset failed: TESTvalue not present.\n"); return 1; } /* enable extended (512-byte) packets */ ACOMMAND(CONFIGcmd | EXTconf); BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__FUNCTION__); /* done! return success. */ return 0; } static void com20020_setmask(struct net_device *dev, int mask) { u_int ioaddr = dev->base_addr; BUGMSG(D_DURING, "Setting mask to %x at %x\n",mask,ioaddr); AINTMASK(mask); } static void com20020_command(struct net_device *dev, int cmd) { u_int ioaddr = dev->base_addr; ACOMMAND(cmd); } static int com20020_status(struct net_device *dev) { u_int ioaddr = dev->base_addr; return ASTATUS() + (ADIAGSTATUS()<<8); } static void com20020_close(struct net_device *dev) { struct arcnet_local *lp = dev->priv; int ioaddr = dev->base_addr; /* disable transmitter */ lp->config &= ~TXENcfg; SETCONF; } /* Set or clear the multicast filter for this adaptor. * num_addrs == -1 Promiscuous mode, receive all packets * num_addrs == 0 Normal mode, clear multicast list * num_addrs > 0 Multicast mode, receive normal and MC packets, and do * best-effort filtering. * FIXME - do multicast stuff, not just promiscuous. */ static void com20020_set_mc_list(struct net_device *dev) { struct arcnet_local *lp = dev->priv; int ioaddr = dev->base_addr; if ((dev->flags & IFF_PROMISC) && (dev->flags & IFF_UP)) { /* Enable promiscuous mode */ if (!(lp->setup & PROMISCset)) BUGMSG(D_NORMAL, "Setting promiscuous flag...\n"); SET_SUBADR(SUB_SETUP1); lp->setup |= PROMISCset; outb(lp->setup, _XREG); } else /* Disable promiscuous mode, use normal mode */ { if ((lp->setup & PROMISCset)) BUGMSG(D_NORMAL, "Resetting promiscuous flag...\n"); SET_SUBADR(SUB_SETUP1); lp->setup &= ~PROMISCset; outb(lp->setup, _XREG); } } #if defined(CONFIG_ARCNET_COM20020_PCI_MODULE) || \ defined(CONFIG_ARCNET_COM20020_ISA_MODULE) EXPORT_SYMBOL(com20020_check); EXPORT_SYMBOL(com20020_found); #endif MODULE_LICENSE("GPL"); #ifdef MODULE int init_module(void) { BUGLVL(D_NORMAL) printk(VERSION); return 0; } void cleanup_module(void) { } #endif /* MODULE */


context:
space:
mode: