diff options
Diffstat (limited to 'sound/hda/ext/hdac_ext_bus.c')
| -rw-r--r-- | sound/hda/ext/hdac_ext_bus.c | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c deleted file mode 100644 index 9c37d9af3023..000000000000 --- a/sound/hda/ext/hdac_ext_bus.c +++ /dev/null @@ -1,259 +0,0 @@ -/* - * hdac-ext-bus.c - HD-audio extended core bus functions. - * - * Copyright (C) 2014-2015 Intel Corp - * Author: Jeeja KP <jeeja.kp@intel.com> - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * 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; version 2 of the License. - * - * 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 <linux/slab.h> -#include <linux/io.h> -#include <sound/hdaudio_ext.h> - -MODULE_DESCRIPTION("HDA extended core"); -MODULE_LICENSE("GPL v2"); - -static void hdac_ext_writel(u32 value, u32 __iomem *addr) -{ - writel(value, addr); -} - -static u32 hdac_ext_readl(u32 __iomem *addr) -{ - return readl(addr); -} - -static void hdac_ext_writew(u16 value, u16 __iomem *addr) -{ - writew(value, addr); -} - -static u16 hdac_ext_readw(u16 __iomem *addr) -{ - return readw(addr); -} - -static void hdac_ext_writeb(u8 value, u8 __iomem *addr) -{ - writeb(value, addr); -} - -static u8 hdac_ext_readb(u8 __iomem *addr) -{ - return readb(addr); -} - -static int hdac_ext_dma_alloc_pages(struct hdac_bus *bus, int type, - size_t size, struct snd_dma_buffer *buf) -{ - return snd_dma_alloc_pages(type, bus->dev, size, buf); -} - -static void hdac_ext_dma_free_pages(struct hdac_bus *bus, struct snd_dma_buffer *buf) -{ - snd_dma_free_pages(buf); -} - -static const struct hdac_io_ops hdac_ext_default_io = { - .reg_writel = hdac_ext_writel, - .reg_readl = hdac_ext_readl, - .reg_writew = hdac_ext_writew, - .reg_readw = hdac_ext_readw, - .reg_writeb = hdac_ext_writeb, - .reg_readb = hdac_ext_readb, - .dma_alloc_pages = hdac_ext_dma_alloc_pages, - .dma_free_pages = hdac_ext_dma_free_pages, -}; - -/** - * snd_hdac_ext_bus_init - initialize a HD-audio extended bus - * @ebus: the pointer to extended bus object - * @dev: device pointer - * @ops: bus verb operators - * @io_ops: lowlevel I/O operators, can be NULL. If NULL core will use - * default ops - * - * Returns 0 if successful, or a negative error code. - */ -int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev, - const struct hdac_bus_ops *ops, - const struct hdac_io_ops *io_ops, - const struct hdac_ext_bus_ops *ext_ops) -{ - int ret; - static int idx; - - /* check if io ops are provided, if not load the defaults */ - if (io_ops == NULL) - io_ops = &hdac_ext_default_io; - - ret = snd_hdac_bus_init(bus, dev, ops, io_ops); - if (ret < 0) - return ret; - - bus->ext_ops = ext_ops; - INIT_LIST_HEAD(&bus->hlink_list); - bus->idx = idx++; - - mutex_init(&bus->lock); - bus->cmd_dma_state = true; - - return 0; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_init); - -/** - * snd_hdac_ext_bus_exit - clean up a HD-audio extended bus - * @ebus: the pointer to extended bus object - */ -void snd_hdac_ext_bus_exit(struct hdac_bus *bus) -{ - snd_hdac_bus_exit(bus); - WARN_ON(!list_empty(&bus->hlink_list)); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_exit); - -static void default_release(struct device *dev) -{ - snd_hdac_ext_bus_device_exit(container_of(dev, struct hdac_device, dev)); -} - -/** - * snd_hdac_ext_bus_device_init - initialize the HDA extended codec base device - * @ebus: hdac extended bus to attach to - * @addr: codec address - * - * Returns zero for success or a negative error code. - */ -int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr, - struct hdac_device *hdev) -{ - char name[15]; - int ret; - - hdev->bus = bus; - - snprintf(name, sizeof(name), "ehdaudio%dD%d", bus->idx, addr); - - ret = snd_hdac_device_init(hdev, bus, name, addr); - if (ret < 0) { - dev_err(bus->dev, "device init failed for hdac device\n"); - return ret; - } - hdev->type = HDA_DEV_ASOC; - hdev->dev.release = default_release; - - ret = snd_hdac_device_register(hdev); - if (ret) { - dev_err(bus->dev, "failed to register hdac device\n"); - snd_hdac_ext_bus_device_exit(hdev); - return ret; - } - - return 0; -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_init); - -/** - * snd_hdac_ext_bus_device_exit - clean up a HD-audio extended codec base device - * @hdev: hdac device to clean up - */ -void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev) -{ - snd_hdac_device_exit(hdev); - kfree(hdev); -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_exit); - -/** - * snd_hdac_ext_bus_device_remove - remove HD-audio extended codec base devices - * - * @ebus: HD-audio extended bus - */ -void snd_hdac_ext_bus_device_remove(struct hdac_bus *bus) -{ - struct hdac_device *codec, *__codec; - /* - * we need to remove all the codec devices objects created in the - * snd_hdac_ext_bus_device_init - */ - list_for_each_entry_safe(codec, __codec, &bus->codec_list, list) { - snd_hdac_device_unregister(codec); - put_device(&codec->dev); - } -} -EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_remove); -#define dev_to_hdac(dev) (container_of((dev), \ - struct hdac_device, dev)) - -static inline struct hdac_driver *get_hdrv(struct device *dev) -{ - struct hdac_driver *hdrv = drv_to_hdac_driver(dev->driver); - return hdrv; -} - -static inline struct hdac_device *get_hdev(struct device *dev) -{ - struct hdac_device *hdev = dev_to_hdac_dev(dev); - return hdev; -} - -static int hda_ext_drv_probe(struct device *dev) -{ - return (get_hdrv(dev))->probe(get_hdev(dev)); -} - -static int hdac_ext_drv_remove(struct device *dev) -{ - return (get_hdrv(dev))->remove(get_hdev(dev)); -} - -static void hdac_ext_drv_shutdown(struct device *dev) -{ - return (get_hdrv(dev))->shutdown(get_hdev(dev)); -} - -/** - * snd_hda_ext_driver_register - register a driver for ext hda devices - * - * @drv: ext hda driver structure - */ -int snd_hda_ext_driver_register(struct hdac_driver *drv) -{ - drv->type = HDA_DEV_ASOC; - drv->driver.bus = &snd_hda_bus_type; - /* we use default match */ - - if (drv->probe) - drv->driver.probe = hda_ext_drv_probe; - if (drv->remove) - drv->driver.remove = hdac_ext_drv_remove; - if (drv->shutdown) - drv->driver.shutdown = hdac_ext_drv_shutdown; - - return driver_register(&drv->driver); -} -EXPORT_SYMBOL_GPL(snd_hda_ext_driver_register); - -/** - * snd_hda_ext_driver_unregister - unregister a driver for ext hda devices - * - * @drv: ext hda driver structure - */ -void snd_hda_ext_driver_unregister(struct hdac_driver *drv) -{ - driver_unregister(&drv->driver); -} -EXPORT_SYMBOL_GPL(snd_hda_ext_driver_unregister); |