diff options
Diffstat (limited to 'drivers/media/video/stk1160/stk1160-ac97.c')
| -rw-r--r-- | drivers/media/video/stk1160/stk1160-ac97.c | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/drivers/media/video/stk1160/stk1160-ac97.c b/drivers/media/video/stk1160/stk1160-ac97.c deleted file mode 100644 index 8d325f50c87b..000000000000 --- a/drivers/media/video/stk1160/stk1160-ac97.c +++ /dev/null @@ -1,153 +0,0 @@ -/* - * STK1160 driver - * - * Copyright (C) 2012 Ezequiel Garcia - * <elezegarcia--a.t--gmail.com> - * - * Based on Easycap driver by R.M. Thomas - * Copyright (C) 2010 R.M. Thomas - * <rmthomas--a.t--sciolus.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. - * - */ - -#include <linux/module.h> -#include <sound/core.h> -#include <sound/initval.h> -#include <sound/ac97_codec.h> - -#include "stk1160.h" -#include "stk1160-reg.h" - -static struct snd_ac97 *stk1160_ac97; - -static void stk1160_write_ac97(struct snd_ac97 *ac97, u16 reg, u16 value) -{ - struct stk1160 *dev = ac97->private_data; - - /* Set codec register address */ - stk1160_write_reg(dev, STK1160_AC97_ADDR, reg); - - /* Set codec command */ - stk1160_write_reg(dev, STK1160_AC97_CMD, value & 0xff); - stk1160_write_reg(dev, STK1160_AC97_CMD + 1, (value & 0xff00) >> 8); - - /* - * Set command write bit to initiate write operation. - * The bit will be cleared when transfer is done. - */ - stk1160_write_reg(dev, STK1160_AC97CTL_0, 0x8c); -} - -static u16 stk1160_read_ac97(struct snd_ac97 *ac97, u16 reg) -{ - struct stk1160 *dev = ac97->private_data; - u8 vall = 0; - u8 valh = 0; - - /* Set codec register address */ - stk1160_write_reg(dev, STK1160_AC97_ADDR, reg); - - /* - * Set command read bit to initiate read operation. - * The bit will be cleared when transfer is done. - */ - stk1160_write_reg(dev, STK1160_AC97CTL_0, 0x8b); - - /* Retrieve register value */ - stk1160_read_reg(dev, STK1160_AC97_CMD, &vall); - stk1160_read_reg(dev, STK1160_AC97_CMD + 1, &valh); - - return (valh << 8) | vall; -} - -static void stk1160_reset_ac97(struct snd_ac97 *ac97) -{ - struct stk1160 *dev = ac97->private_data; - /* Two-step reset AC97 interface and hardware codec */ - stk1160_write_reg(dev, STK1160_AC97CTL_0, 0x94); - stk1160_write_reg(dev, STK1160_AC97CTL_0, 0x88); - - /* Set 16-bit audio data and choose L&R channel*/ - stk1160_write_reg(dev, STK1160_AC97CTL_1 + 2, 0x01); -} - -static struct snd_ac97_bus_ops stk1160_ac97_ops = { - .read = stk1160_read_ac97, - .write = stk1160_write_ac97, - .reset = stk1160_reset_ac97, -}; - -int stk1160_ac97_register(struct stk1160 *dev) -{ - struct snd_card *card = NULL; - struct snd_ac97_bus *ac97_bus; - struct snd_ac97_template ac97_template; - int rc; - - /* - * Just want a card to access ac96 controls, - * the actual capture interface will be handled by snd-usb-audio - */ - rc = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, - THIS_MODULE, 0, &card); - if (rc < 0) - return rc; - - snd_card_set_dev(card, dev->dev); - - /* TODO: I'm not sure where should I get these names :-( */ - snprintf(card->shortname, sizeof(card->shortname), - "stk1160-mixer"); - snprintf(card->longname, sizeof(card->longname), - "stk1160 ac97 codec mixer control"); - strncpy(card->driver, dev->dev->driver->name, sizeof(card->driver)); - - rc = snd_ac97_bus(card, 0, &stk1160_ac97_ops, NULL, &ac97_bus); - if (rc) - goto err; - - /* We must set private_data before calling snd_ac97_mixer */ - memset(&ac97_template, 0, sizeof(ac97_template)); - ac97_template.private_data = dev; - ac97_template.scaps = AC97_SCAP_SKIP_MODEM; - rc = snd_ac97_mixer(ac97_bus, &ac97_template, &stk1160_ac97); - if (rc) - goto err; - - dev->snd_card = card; - rc = snd_card_register(card); - if (rc) - goto err; - - return 0; - -err: - dev->snd_card = NULL; - if (card) - snd_card_free(card); - return rc; -} - -int stk1160_ac97_unregister(struct stk1160 *dev) -{ - struct snd_card *card = dev->snd_card; - - /* - * We need to check usb_device, - * because ac97 release attempts to communicate with codec - */ - if (card && dev->udev) - snd_card_free(card); - - return 0; -} |