diff options
Diffstat (limited to 'drivers/media/video/bt8xx/bttv-gpio.c')
| -rw-r--r-- | drivers/media/video/bt8xx/bttv-gpio.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/drivers/media/video/bt8xx/bttv-gpio.c b/drivers/media/video/bt8xx/bttv-gpio.c deleted file mode 100644 index 922e8233fd0b..000000000000 --- a/drivers/media/video/bt8xx/bttv-gpio.c +++ /dev/null @@ -1,189 +0,0 @@ -/* - - bttv-gpio.c -- gpio sub drivers - - sysfs-based sub driver interface for bttv - mainly intended for gpio access - - - Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de) - & Marcus Metzler (mocm@thp.uni-koeln.de) - (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - -*/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/slab.h> -#include <asm/io.h> - -#include "bttvp.h" - -/* ----------------------------------------------------------------------- */ -/* internal: the bttv "bus" */ - -static int bttv_sub_bus_match(struct device *dev, struct device_driver *drv) -{ - struct bttv_sub_driver *sub = to_bttv_sub_drv(drv); - int len = strlen(sub->wanted); - - if (0 == strncmp(dev_name(dev), sub->wanted, len)) - return 1; - return 0; -} - -static int bttv_sub_probe(struct device *dev) -{ - struct bttv_sub_device *sdev = to_bttv_sub_dev(dev); - struct bttv_sub_driver *sub = to_bttv_sub_drv(dev->driver); - - return sub->probe ? sub->probe(sdev) : -ENODEV; -} - -static int bttv_sub_remove(struct device *dev) -{ - struct bttv_sub_device *sdev = to_bttv_sub_dev(dev); - struct bttv_sub_driver *sub = to_bttv_sub_drv(dev->driver); - - if (sub->remove) - sub->remove(sdev); - return 0; -} - -struct bus_type bttv_sub_bus_type = { - .name = "bttv-sub", - .match = &bttv_sub_bus_match, - .probe = bttv_sub_probe, - .remove = bttv_sub_remove, -}; - -static void release_sub_device(struct device *dev) -{ - struct bttv_sub_device *sub = to_bttv_sub_dev(dev); - kfree(sub); -} - -int bttv_sub_add_device(struct bttv_core *core, char *name) -{ - struct bttv_sub_device *sub; - int err; - - sub = kzalloc(sizeof(*sub),GFP_KERNEL); - if (NULL == sub) - return -ENOMEM; - - sub->core = core; - sub->dev.parent = &core->pci->dev; - sub->dev.bus = &bttv_sub_bus_type; - sub->dev.release = release_sub_device; - dev_set_name(&sub->dev, "%s%d", name, core->nr); - - err = device_register(&sub->dev); - if (0 != err) { - kfree(sub); - return err; - } - pr_info("%d: add subdevice \"%s\"\n", core->nr, dev_name(&sub->dev)); - list_add_tail(&sub->list,&core->subs); - return 0; -} - -int bttv_sub_del_devices(struct bttv_core *core) -{ - struct bttv_sub_device *sub, *save; - - list_for_each_entry_safe(sub, save, &core->subs, list) { - list_del(&sub->list); - device_unregister(&sub->dev); - } - return 0; -} - -/* ----------------------------------------------------------------------- */ -/* external: sub-driver register/unregister */ - -int bttv_sub_register(struct bttv_sub_driver *sub, char *wanted) -{ - sub->drv.bus = &bttv_sub_bus_type; - snprintf(sub->wanted,sizeof(sub->wanted),"%s",wanted); - return driver_register(&sub->drv); -} -EXPORT_SYMBOL(bttv_sub_register); - -int bttv_sub_unregister(struct bttv_sub_driver *sub) -{ - driver_unregister(&sub->drv); - return 0; -} -EXPORT_SYMBOL(bttv_sub_unregister); - -/* ----------------------------------------------------------------------- */ -/* external: gpio access functions */ - -void bttv_gpio_inout(struct bttv_core *core, u32 mask, u32 outbits) -{ - struct bttv *btv = container_of(core, struct bttv, c); - unsigned long flags; - u32 data; - - spin_lock_irqsave(&btv->gpio_lock,flags); - data = btread(BT848_GPIO_OUT_EN); - data = data & ~mask; - data = data | (mask & outbits); - btwrite(data,BT848_GPIO_OUT_EN); - spin_unlock_irqrestore(&btv->gpio_lock,flags); -} - -u32 bttv_gpio_read(struct bttv_core *core) -{ - struct bttv *btv = container_of(core, struct bttv, c); - u32 value; - - value = btread(BT848_GPIO_DATA); - return value; -} - -void bttv_gpio_write(struct bttv_core *core, u32 value) -{ - struct bttv *btv = container_of(core, struct bttv, c); - - btwrite(value,BT848_GPIO_DATA); -} - -void bttv_gpio_bits(struct bttv_core *core, u32 mask, u32 bits) -{ - struct bttv *btv = container_of(core, struct bttv, c); - unsigned long flags; - u32 data; - - spin_lock_irqsave(&btv->gpio_lock,flags); - data = btread(BT848_GPIO_DATA); - data = data & ~mask; - data = data | (mask & bits); - btwrite(data,BT848_GPIO_DATA); - spin_unlock_irqrestore(&btv->gpio_lock,flags); -} - -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ |