From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/media/pci/bt8xx/bttv-if.c | 103 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 drivers/media/pci/bt8xx/bttv-if.c (limited to 'drivers/media/pci/bt8xx/bttv-if.c') diff --git a/drivers/media/pci/bt8xx/bttv-if.c b/drivers/media/pci/bt8xx/bttv-if.c new file mode 100644 index 000000000..363c84bac --- /dev/null +++ b/drivers/media/pci/bt8xx/bttv-if.c @@ -0,0 +1,103 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + bttv-if.c -- old gpio interface to other kernel modules + don't use in new code, will go away in 2.7 + have a look at bttv-gpio.c instead. + + bttv - Bt848 frame grabber driver + + Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de) + & Marcus Metzler (mocm@thp.uni-koeln.de) + (c) 1999-2003 Gerd Knorr + + +*/ + +#include +#include +#include +#include + +#include "bttvp.h" + +EXPORT_SYMBOL(bttv_get_pcidev); +EXPORT_SYMBOL(bttv_gpio_enable); +EXPORT_SYMBOL(bttv_read_gpio); +EXPORT_SYMBOL(bttv_write_gpio); + +/* ----------------------------------------------------------------------- */ +/* Exported functions - for other modules which want to access the */ +/* gpio ports (IR for example) */ +/* see bttv.h for comments */ + +struct pci_dev* bttv_get_pcidev(unsigned int card) +{ + if (card >= bttv_num) + return NULL; + if (!bttvs[card]) + return NULL; + + return bttvs[card]->c.pci; +} + + +int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data) +{ + struct bttv *btv; + + if (card >= bttv_num) { + return -EINVAL; + } + + btv = bttvs[card]; + if (!btv) + return -ENODEV; + + gpio_inout(mask,data); + if (bttv_gpio) + bttv_gpio_tracking(btv,"extern enable"); + return 0; +} + +int bttv_read_gpio(unsigned int card, unsigned long *data) +{ + struct bttv *btv; + + if (card >= bttv_num) { + return -EINVAL; + } + + btv = bttvs[card]; + if (!btv) + return -ENODEV; + + if(btv->shutdown) { + return -ENODEV; + } + +/* prior setting BT848_GPIO_REG_INP is (probably) not needed + because we set direct input on init */ + *data = gpio_read(); + return 0; +} + +int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data) +{ + struct bttv *btv; + + if (card >= bttv_num) { + return -EINVAL; + } + + btv = bttvs[card]; + if (!btv) + return -ENODEV; + +/* prior setting BT848_GPIO_REG_INP is (probably) not needed + because direct input is set on init */ + gpio_bits(mask,data); + if (bttv_gpio) + bttv_gpio_tracking(btv,"extern write"); + return 0; +} -- cgit v1.2.3