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initial SOF hdac serials.#47
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) | ||
| /* | ||
| * This file is provided under a dual BSD/GPLv2 license. When using or | ||
| * redistributing this file, you may do so under either license. | ||
| * | ||
| * Copyright(c) 2018 Intel Corporation. All rights reserved. | ||
| * | ||
| * Authors: Jeeja KP <jeeja.kp@intel.com> | ||
| * Keyon Jie <yang.jie@linux.intel.com> | ||
| */ | ||
| #include <sound/hdaudio.h> | ||
| #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) | ||
Member There was a problem hiding this comment. Isn't this implied by Kconfig option Author There was a problem hiding this comment. are you meaning that IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) is true always? | ||
| static const struct hdac_bus_ops bus_ops = { | ||
| .command = snd_hdac_bus_send_cmd, | ||
| .get_response = snd_hdac_bus_get_response, | ||
| }; | ||
| /* | ||
| * process queued unsolicited events | ||
| */ | ||
| static void hda_process_unsol_events(struct work_struct *work) | ||
| { | ||
| struct hdac_bus *bus = container_of(work, struct hdac_bus, unsol_work); | ||
| struct hdac_device *codec; | ||
| struct hdac_driver *drv; | ||
| unsigned int rp, caddr, res; | ||
| while (bus->unsol_rp != bus->unsol_wp) { | ||
| rp = (bus->unsol_rp + 1) % HDA_UNSOL_QUEUE_SIZE; | ||
| bus->unsol_rp = rp; | ||
| rp <<= 1; | ||
| res = bus->unsol_queue[rp]; | ||
| caddr = bus->unsol_queue[rp + 1]; | ||
| if (!(caddr & (1 << 4))) /* no unsolicited event? */ | ||
| continue; | ||
| codec = bus->caddr_tbl[caddr & 0x0f]; | ||
| if (!codec || !codec->dev.driver) | ||
| continue; | ||
| drv = drv_to_hdac_driver(codec->dev.driver); | ||
| if (drv->unsol_event) | ||
| drv->unsol_event(codec, res); | ||
| } | ||
| } | ||
| #endif | ||
| static void sof_hda_writel(u32 value, u32 __iomem *addr) | ||
| { | ||
| writel(value, addr); | ||
| } | ||
| static u32 sof_hda_readl(u32 __iomem *addr) | ||
| { | ||
| return readl(addr); | ||
| } | ||
| static void sof_hda_writew(u16 value, u16 __iomem *addr) | ||
| { | ||
| writew(value, addr); | ||
| } | ||
| static u16 sof_hda_readw(u16 __iomem *addr) | ||
| { | ||
| return readw(addr); | ||
| } | ||
| static void sof_hda_writeb(u8 value, u8 __iomem *addr) | ||
| { | ||
| writeb(value, addr); | ||
| } | ||
| static u8 sof_hda_readb(u8 __iomem *addr) | ||
| { | ||
| return readb(addr); | ||
| } | ||
| static int sof_hda_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 sof_hda_dma_free_pages(struct hdac_bus *bus, | ||
| struct snd_dma_buffer *buf) | ||
| { | ||
| snd_dma_free_pages(buf); | ||
| } | ||
| static const struct hdac_io_ops io_ops = { | ||
| .reg_writel = sof_hda_writel, | ||
| .reg_readl = sof_hda_readl, | ||
| .reg_writew = sof_hda_writew, | ||
| .reg_readw = sof_hda_readw, | ||
| .reg_writeb = sof_hda_writeb, | ||
| .reg_readb = sof_hda_readb, | ||
| .dma_alloc_pages = sof_hda_dma_alloc_pages, | ||
| .dma_free_pages = sof_hda_dma_free_pages, | ||
| }; | ||
| /* | ||
| * This can be used for both with/without hda link support. | ||
| * Returns 0 if successful, or a negative error code. | ||
| */ | ||
| int sof_hda_bus_init(struct hdac_bus *bus, struct device *dev, | ||
| const struct hdac_ext_bus_ops *ext_ops) | ||
| { | ||
| static int idx; | ||
| memset(bus, 0, sizeof(*bus)); | ||
| bus->dev = dev; | ||
| #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) | ||
| bus->ops = &bus_ops; | ||
| #endif | ||
| bus->io_ops = &io_ops; | ||
| INIT_LIST_HEAD(&bus->stream_list); | ||
| INIT_LIST_HEAD(&bus->codec_list); | ||
| #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) | ||
| INIT_WORK(&bus->unsol_work, hda_process_unsol_events); | ||
| #endif | ||
| spin_lock_init(&bus->reg_lock); | ||
| mutex_init(&bus->cmd_mutex); | ||
| bus->irq = -1; | ||
| 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; | ||
| } | ||
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Does this have a help section (check patch complains without one).
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let me add it.