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author | Linus Torvalds | 2015-09-04 20:46:02 +0200 |
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committer | Linus Torvalds | 2015-09-04 20:46:02 +0200 |
commit | abebcdfb64f1b39eeeb14282d9cd4aad1ed86f8d (patch) | |
tree | 2c5ac5569cf4d101dd12732ae2ea5cd368cd0a13 /sound/soc/intel/skylake/skl-nhlt.c | |
parent | Merge tag 'backlight-for-linus-4.3' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
parent | drm/i915: Add locks around audio component bind/unbind (diff) | |
download | kernel-qcow2-linux-abebcdfb64f1b39eeeb14282d9cd4aad1ed86f8d.tar.gz kernel-qcow2-linux-abebcdfb64f1b39eeeb14282d9cd4aad1ed86f8d.tar.xz kernel-qcow2-linux-abebcdfb64f1b39eeeb14282d9cd4aad1ed86f8d.zip |
Merge tag 'sound-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There are little changes in core part, but lots of development are
found in drivers, especially ASoC. The diffstat shows regmap-related
changes for a slight API additions / changes, and that's all.
Looking at the code size statistics, the most significant addition is
for Intel Skylake. (Note that SKL support is still underway, the
codec driver is missing.) Also STI controller driver is a major
addition as well as a few new codec drivers.
In HD-audio side, there are fewer changes than the past. The
noticeable change is the support of ELD notification from i915
graphics driver. Thus this pull request carries a few changes in
drm/i915.
Other than that, USB-audio got a rewrite of runtime PM code. It was
initiated by lockdep warning, but resulted in a good cleanup in the
end.
Below are the highlights:
Common:
- Factoring out of AC'97 reset code from ASoC into the core helper
- A few regmap API extensions (in case it's not pulled yet)
ASoC:
- New drivers for Cirrus CS4349, GTM601, InvenSense ICS43432, Realtek
RT298 and ST STI controllers
- Machine drivers for Rockchip systems with MAX98090 and RT5645 and
RT5650
- Initial driver support for Intel Skylake devices
- Lots of rsnd cleanup and enhancements
- A few DAPM fixes and cleanups
- A large number of cleanups in various drivers (conversion and
standardized to regmap, component) mostly by Lars-Peter and Axel
HD-audio:
- Extended HD-audio core for Intel Skylake controller support
- Quirks for Dell headsets, Alienware 15
- Clean up of pin-based quirk tables for Realtek codecs
- ELD notifier implenetation for Intel HDMI/DP
USB-audio:
- Refactor runtime PM code to make lockdep happier"
* tag 'sound-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (411 commits)
drm/i915: Add locks around audio component bind/unbind
drm/i915: Drop port_mst_index parameter from pin/eld callback
ALSA: hda - Fix missing inline for dummy snd_hdac_set_codec_wakeup()
ALSA: hda - Wake the codec up on pin/ELD notify events
ALSA: hda - allow codecs to access the i915 pin/ELD callback
drm/i915: Call audio pin/ELD notify function
drm/i915: Add audio pin sense / ELD callback
ASoC: zx296702-i2s: Fix resource leak when unload module
ASoC: sti_uniperif: Ensure component is unregistered when unload module
ASoC: au1x: psc-i2s: Convert to use devm_ioremap_resource
ASoC: sh: dma-sh7760: Convert to devm_snd_soc_register_platform
ASoC: spear_pcm: Use devm_snd_dmaengine_pcm_register to fix resource leak
ALSA: fireworks/bebob/dice/oxfw: fix substreams counting at vmalloc failure
ASoC: Clean up docbook warnings
ASoC: txx9: Convert to devm_snd_soc_register_platform
ASoC: pxa: Convert to devm_snd_soc_register_platform
ASoC: nuc900: Convert to devm_snd_soc_register_platform
ASoC: blackfin: Convert to devm_snd_soc_register_platform
ASoC: au1x: Convert to devm_snd_soc_register_platform
ASoC: qcom: Constify asoc_qcom_lpass_cpu_dai_ops
...
Diffstat (limited to 'sound/soc/intel/skylake/skl-nhlt.c')
-rw-r--r-- | sound/soc/intel/skylake/skl-nhlt.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/sound/soc/intel/skylake/skl-nhlt.c b/sound/soc/intel/skylake/skl-nhlt.c new file mode 100644 index 000000000000..13036b19d7e5 --- /dev/null +++ b/sound/soc/intel/skylake/skl-nhlt.c @@ -0,0 +1,140 @@ +/* + * skl-nhlt.c - Intel SKL Platform NHLT parsing + * + * Copyright (C) 2015 Intel Corp + * Author: Sanjiv Kumar <sanjiv.kumar@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 "skl.h" + +/* Unique identification for getting NHLT blobs */ +static u8 OSC_UUID[16] = {0x6E, 0x88, 0x9F, 0xA6, 0xEB, 0x6C, 0x94, 0x45, + 0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53}; + +#define DSDT_NHLT_PATH "\\_SB.PCI0.HDAS" + +void __iomem *skl_nhlt_init(struct device *dev) +{ + acpi_handle handle; + union acpi_object *obj; + struct nhlt_resource_desc *nhlt_ptr = NULL; + + if (ACPI_FAILURE(acpi_get_handle(NULL, DSDT_NHLT_PATH, &handle))) { + dev_err(dev, "Requested NHLT device not found\n"); + return NULL; + } + + obj = acpi_evaluate_dsm(handle, OSC_UUID, 1, 1, NULL); + if (obj && obj->type == ACPI_TYPE_BUFFER) { + nhlt_ptr = (struct nhlt_resource_desc *)obj->buffer.pointer; + + return ioremap_cache(nhlt_ptr->min_addr, nhlt_ptr->length); + } + + dev_err(dev, "device specific method to extract NHLT blob failed\n"); + return NULL; +} + +void skl_nhlt_free(void __iomem *addr) +{ + iounmap(addr); + addr = NULL; +} + +static struct nhlt_specific_cfg *skl_get_specific_cfg( + struct device *dev, struct nhlt_fmt *fmt, + u8 no_ch, u32 rate, u16 bps) +{ + struct nhlt_specific_cfg *sp_config; + struct wav_fmt *wfmt; + struct nhlt_fmt_cfg *fmt_config = fmt->fmt_config; + int i; + + dev_dbg(dev, "Format count =%d\n", fmt->fmt_count); + + for (i = 0; i < fmt->fmt_count; i++) { + wfmt = &fmt_config->fmt_ext.fmt; + dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", wfmt->channels, + wfmt->bits_per_sample, wfmt->samples_per_sec); + if (wfmt->channels == no_ch && wfmt->samples_per_sec == rate && + wfmt->bits_per_sample == bps) { + sp_config = &fmt_config->config; + + return sp_config; + } + + fmt_config = (struct nhlt_fmt_cfg *)(fmt_config->config.caps + + fmt_config->config.size); + } + + return NULL; +} + +static void dump_config(struct device *dev, u32 instance_id, u8 linktype, + u8 s_fmt, u8 num_channels, u32 s_rate, u8 dirn, u16 bps) +{ + dev_dbg(dev, "Input configuration\n"); + dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", num_channels, s_fmt, s_rate); + dev_dbg(dev, "vbus_id=%d link_type=%d\n", instance_id, linktype); + dev_dbg(dev, "bits_per_sample=%d\n", bps); +} + +static bool skl_check_ep_match(struct device *dev, struct nhlt_endpoint *epnt, + u32 instance_id, u8 link_type, u8 dirn) +{ + dev_dbg(dev, "vbus_id=%d link_type=%d dir=%d\n", + epnt->virtual_bus_id, epnt->linktype, epnt->direction); + + if ((epnt->virtual_bus_id == instance_id) && + (epnt->linktype == link_type) && + (epnt->direction == dirn)) + return true; + else + return false; +} + +struct nhlt_specific_cfg +*skl_get_ep_blob(struct skl *skl, u32 instance, u8 link_type, + u8 s_fmt, u8 num_ch, u32 s_rate, u8 dirn) +{ + struct nhlt_fmt *fmt; + struct nhlt_endpoint *epnt; + struct hdac_bus *bus = ebus_to_hbus(&skl->ebus); + struct device *dev = bus->dev; + struct nhlt_specific_cfg *sp_config; + struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt; + u16 bps = num_ch * s_fmt; + u8 j; + + dump_config(dev, instance, link_type, s_fmt, num_ch, s_rate, dirn, bps); + + epnt = (struct nhlt_endpoint *)nhlt->desc; + + dev_dbg(dev, "endpoint count =%d\n", nhlt->endpoint_count); + + for (j = 0; j < nhlt->endpoint_count; j++) { + if (skl_check_ep_match(dev, epnt, instance, link_type, dirn)) { + fmt = (struct nhlt_fmt *)(epnt->config.caps + + epnt->config.size); + sp_config = skl_get_specific_cfg(dev, fmt, num_ch, s_rate, bps); + if (sp_config) + return sp_config; + } + + epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length); + } + + return NULL; +} |