acpi/soundwire: Add functions to generate SoundWire properties
This change uses the previously added SoundWire definitions to provide functions that generate ACPI Device Properties for SoundWire controllers and codecs. A SoundWire controller driver should populate `struct soundwire_controller` and pass it to soundwire_gen_controller(). This will add all of the defined master links provided by the controller. A SoundWire codec driver should populate the necessary members in struct soundwire_codec and pass it to soundwire_gen_codec(). Several properties are optional and depend on whether the codec itself supports certain features and behaviors. The goal of this interface is to handle all of the properties defined in the SoundWire Discovery and Configuration Specification Version 1.0 so that controller and codec drivers do not need to all have code for writing standard properties. Both of these functions also provide a callback method for adding custom properties that are not defined by the SoundWire DisCo Specification. These properties may be required by OS drivers but are outside of the scope of the SoundWire specification itself. This code is tested with controller, codec, and mainboard implementations in subsequent commits. BUG=b:146482091 Signed-off-by: Duncan Laurie <dlaurie@google.com> Change-Id: Ib185eaacf3c4914087497ed65479a772c155502b Reviewed-on: https://review.coreboot.org/c/coreboot/+/40884 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Duncan Laurie
Duncan Laurie
parent
ebf1932f23
commit
e8189b7426
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@ -9,6 +9,7 @@ ramstage-y += acpigen_ps2_keybd.c
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ramstage-y += device.c
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ramstage-y += pld.c
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ramstage-y += sata.c
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ramstage-y += soundwire.c
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ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/acpi_tables.c),)
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ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/acpi_tables.c
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@ -0,0 +1,429 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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#include <acpi/acpigen.h>
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#include <acpi/acpi_device.h>
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#include <acpi/acpi_soundwire.h>
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#include <commonlib/helpers.h>
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#include <device/soundwire.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <string.h>
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/* Specification-defined prefix for SoundWire properties. */
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#define SDW_PFX "mipi-sdw-"
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/* Generate SoundWire property for integer. */
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#define SDW_INT(__key, __val) \
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acpi_dp_add_integer(dsd, SDW_PFX __key, __val)
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/* Generate SoundWire property for integer array. */
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#define SDW_INT_ARRAY(__key, __val) \
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acpi_dp_add_integer_array(dsd, SDW_PFX __key, __val, __val##_count)
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/**
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* struct soundwire_name_map - Map ACPI name to SoundWire property name.
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* @acpi_name: ACPI compatible name string.
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* @sdw_name: MIPI SoundWire property name string.
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*/
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struct soundwire_name_map {
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const char *acpi_name;
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const char *sdw_name;
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};
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static const struct soundwire_name_map bra_mode_names[] = {
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{ "BRA0", SDW_PFX "port-bra-mode-0" },
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{ "BRA1", SDW_PFX "port-bra-mode-1" },
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{ "BRA2", SDW_PFX "port-bra-mode-2" },
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{ "BRA3", SDW_PFX "port-bra-mode-3" },
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};
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static const struct soundwire_name_map audio_mode_names[] = {
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{ "MOD0", SDW_PFX "port-audio-mode-0" },
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{ "MOD1", SDW_PFX "port-audio-mode-1" },
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{ "MOD2", SDW_PFX "port-audio-mode-2" },
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{ "MOD3", SDW_PFX "port-audio-mode-3" },
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};
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static const struct soundwire_name_map dpn_source_names[] = {
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{ "DP0", SDW_PFX "dp-0-subproperties" },
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{ "SRC1", SDW_PFX "dp-1-source-subproperties" },
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{ "SRC2", SDW_PFX "dp-2-source-subproperties" },
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{ "SRC3", SDW_PFX "dp-3-source-subproperties" },
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{ "SRC4", SDW_PFX "dp-4-source-subproperties" },
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{ "SRC5", SDW_PFX "dp-5-source-subproperties" },
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{ "SRC6", SDW_PFX "dp-6-source-subproperties" },
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{ "SRC7", SDW_PFX "dp-7-source-subproperties" },
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{ "SRC8", SDW_PFX "dp-8-source-subproperties" },
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{ "SRC9", SDW_PFX "dp-9-source-subproperties" },
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{ "SRCA", SDW_PFX "dp-10-source-subproperties" },
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{ "SRCB", SDW_PFX "dp-11-source-subproperties" },
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{ "SRCC", SDW_PFX "dp-12-source-subproperties" },
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{ "SRCD", SDW_PFX "dp-13-source-subproperties" }
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};
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static const struct soundwire_name_map dpn_sink_names[] = {
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{ "DP0", SDW_PFX "dp-0-subproperties" },
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{ "SNK1", SDW_PFX "dp-1-sink-subproperties" },
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{ "SNK2", SDW_PFX "dp-2-sink-subproperties" },
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{ "SNK3", SDW_PFX "dp-3-sink-subproperties" },
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{ "SNK4", SDW_PFX "dp-4-sink-subproperties" },
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{ "SNK5", SDW_PFX "dp-5-sink-subproperties" },
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{ "SNK6", SDW_PFX "dp-6-sink-subproperties" },
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{ "SNK7", SDW_PFX "dp-7-sink-subproperties" },
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{ "SNK8", SDW_PFX "dp-8-sink-subproperties" },
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{ "SNK9", SDW_PFX "dp-9-sink-subproperties" },
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{ "SNKA", SDW_PFX "dp-10-sink-subproperties" },
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{ "SNKB", SDW_PFX "dp-11-sink-subproperties" },
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{ "SNKC", SDW_PFX "dp-12-sink-subproperties" },
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{ "SNKD", SDW_PFX "dp-13-sink-subproperties" }
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};
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static const struct soundwire_name_map link_names[] = {
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{ "LNK0", SDW_PFX "link-0-subproperties" },
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{ "LNK1", SDW_PFX "link-1-subproperties" },
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{ "LNK2", SDW_PFX "link-2-subproperties" },
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{ "LNK3", SDW_PFX "link-3-subproperties" },
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{ "LNK4", SDW_PFX "link-4-subproperties" },
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{ "LNK5", SDW_PFX "link-5-subproperties" },
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{ "LNK6", SDW_PFX "link-6-subproperties" },
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{ "LNK7", SDW_PFX "link-7-subproperties" }
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};
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static const char * const multilane_names[] = {
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SDW_PFX "lane-1-mapping",
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SDW_PFX "lane-2-mapping",
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SDW_PFX "lane-3-mapping",
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SDW_PFX "lane-4-mapping",
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SDW_PFX "lane-5-mapping",
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SDW_PFX "lane-6-mapping",
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SDW_PFX "lane-7-mapping",
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SDW_PFX "lane-8-mapping"
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};
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static const char * const multilane_master_lane_names[] = {
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SDW_PFX "master-lane-1",
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SDW_PFX "master-lane-2",
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SDW_PFX "master-lane-3",
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SDW_PFX "master-lane-4",
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SDW_PFX "master-lane-5",
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SDW_PFX "master-lane-6",
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SDW_PFX "master-lane-7",
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SDW_PFX "master-lane-8"
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};
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static const char * const multilane_slave_link_names[] = {
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SDW_PFX "slave-link-A",
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SDW_PFX "slave-link-B",
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SDW_PFX "slave-link-C",
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SDW_PFX "slave-link-D",
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SDW_PFX "slave-link-E",
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SDW_PFX "slave-link-F",
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SDW_PFX "slave-link-G",
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SDW_PFX "slave-link-I"
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};
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static const char * const multilane_bus_holder_names[] = {
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SDW_PFX "lane-1-bus-holder",
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SDW_PFX "lane-2-bus-holder",
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SDW_PFX "lane-3-bus-holder",
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SDW_PFX "lane-4-bus-holder",
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SDW_PFX "lane-5-bus-holder",
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SDW_PFX "lane-6-bus-holder",
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SDW_PFX "lane-7-bus-holder",
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SDW_PFX "lane-8-bus-holder"
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};
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static void soundwire_gen_interface_revision(struct acpi_dp *dsd)
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{
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acpi_dp_add_integer(dsd, SDW_PFX "sw-interface-revision", SOUNDWIRE_SW_VERSION_1_0);
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}
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static void soundwire_gen_slave(struct acpi_dp *dsd, const struct soundwire_slave *prop)
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{
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soundwire_gen_interface_revision(dsd);
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SDW_INT("wake-up-unavailable", prop->wake_up_unavailable);
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SDW_INT("test-mode-supported", prop->test_mode_supported);
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SDW_INT("clock-stop-mode1-supported", prop->clock_stop_mode1_supported);
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/* Clock Stop Prepare Timeout only used without simplified Clock Stop Prepare. */
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SDW_INT("simplified-clockstopprepare-sm-supported",
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prop->simplified_clockstopprepare_sm_supported);
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if (!prop->simplified_clockstopprepare_sm_supported)
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SDW_INT("clockstopprepare-timeout", prop->clockstopprepare_timeout);
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SDW_INT("clockstopprepare-hard-reset-behavior",
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prop->clockstopprepare_hard_reset_behavior);
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SDW_INT("slave-channelprepare-timeout", prop->slave_channelprepare_timeout);
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SDW_INT("highPHY-capable", prop->highPHY_capable);
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SDW_INT("paging-supported", prop->paging_supported);
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SDW_INT("bank-delay-supported", prop->bank_delay_supported);
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SDW_INT("port15-read-behavior", prop->port15_read_behavior);
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SDW_INT("master-count", prop->master_count);
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SDW_INT("source-port-list", prop->source_port_list);
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SDW_INT("sink-port-list", prop->sink_port_list);
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}
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static void soundwire_gen_multilane(struct acpi_dp *dsd, const struct soundwire_multilane *prop)
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{
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size_t i;
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soundwire_gen_interface_revision(dsd);
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/* Fill out multilane map based on master/slave links. */
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for (i = 0; i < prop->lane_mapping_count && i < SOUNDWIRE_MAX_LANE; i++) {
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const struct soundwire_multilane_map *map = &prop->lane_mapping[i];
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const char *name;
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/* Get the name of this connection */
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if (map->direction == MASTER_LANE)
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name = multilane_master_lane_names[map->connection.master_lane];
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else
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name = multilane_slave_link_names[map->connection.slave_link];
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acpi_dp_add_string(dsd, multilane_names[map->lane], name);
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}
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/* Add bus holder properties. */
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for (i = 0; i < prop->lane_bus_holder_count; i++)
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acpi_dp_add_integer(dsd, multilane_bus_holder_names[i],
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prop->lane_bus_holder[i]);
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}
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static void soundwire_gen_link(struct acpi_dp *dsd, const struct soundwire_link *prop)
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{
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SDW_INT("clock-stop-mode0-supported", prop->clock_stop_mode0_supported);
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SDW_INT("clock-stop-mode1-supported", prop->clock_stop_mode1_supported);
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if (prop->clock_frequencies_supported_count > 0 &&
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prop->clock_frequencies_supported_count < SOUNDWIRE_MAX) {
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SDW_INT_ARRAY("clock-frequencies-supported",
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prop->clock_frequencies_supported);
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}
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SDW_INT("default-frame-rate", prop->default_frame_rate);
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SDW_INT("default-frame-row-size", prop->default_frame_row_size);
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SDW_INT("default-frame-col-size", prop->default_frame_col_size);
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SDW_INT("dynamic-frame-shape", prop->dynamic_frame_shape);
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SDW_INT("command-error-threshold", prop->command_error_threshold);
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}
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static void soundwire_gen_bra_mode(struct acpi_dp *dsd, const struct soundwire_bra_mode *prop)
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{
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/* Bus frequency configs used if min/max not supported. */
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if (prop->bus_frequency_configs_count > 0 &&
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prop->bus_frequency_configs_count < SOUNDWIRE_MAX) {
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SDW_INT_ARRAY("bra-mode-bus-frequency-configs", prop->bus_frequency_configs);
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} else {
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SDW_INT("bra-mode-min-bus-frequency", prop->min_bus_frequency);
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SDW_INT("bra-mode-max-bus-frequency", prop->max_bus_frequency);
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}
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SDW_INT("bra-mode-max-data-per-frame", prop->max_data_per_frame);
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SDW_INT("bra-mode-min-us-between-transactions", prop->min_us_between_transactions);
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}
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static void soundwire_gen_audio_mode(struct acpi_dp *dsd,
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const struct soundwire_audio_mode *prop)
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{
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/* Bus frequency configs used if min/max not supported. */
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if (prop->bus_frequency_configs_count > 0 &&
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prop->bus_frequency_configs_count < SOUNDWIRE_MAX) {
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SDW_INT_ARRAY("audio-mode-bus-frequency-configs", prop->bus_frequency_configs);
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} else {
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SDW_INT("audio-mode-min-bus-frequency", prop->min_bus_frequency);
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SDW_INT("audio-mode-max-bus-frequency", prop->max_bus_frequency);
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}
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/* Sampling frequency configs used if min/max not supported. */
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if (prop->sampling_frequency_configs_count > 0 &&
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prop->sampling_frequency_configs_count < SOUNDWIRE_MAX) {
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SDW_INT_ARRAY("audio-mode-sampling-frequency-configs",
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prop->sampling_frequency_configs);
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} else {
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SDW_INT("audio-mode-max-sampling-frequency", prop->max_sampling_frequency);
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SDW_INT("audio-mode-min-sampling-frequency", prop->min_sampling_frequency);
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}
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SDW_INT("audio-mode-prepare-channel-behavior", prop->prepare_channel_behavior);
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SDW_INT("audio-mode-glitchless-transitions", prop->glitchless_transitions);
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}
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static void soundwire_gen_dp0(struct acpi_dp *dsd, const struct soundwire_dp0 *prop)
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{
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size_t i;
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/* Max wordlength configs used if min/max not supported. */
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if (prop->port_wordlength_configs_count > 0 &&
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prop->port_wordlength_configs_count < SOUNDWIRE_MAX) {
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SDW_INT_ARRAY("port-wordlength-configs", prop->port_wordlength_configs);
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} else {
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SDW_INT("port-max-wordlength", prop->port_max_wordlength);
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SDW_INT("port-min-wordlength", prop->port_min_wordlength);
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}
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SDW_INT("bra-flow-controlled", prop->bra_flow_controlled);
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SDW_INT("bra-imp-def-response-supported", prop->bra_imp_def_response_supported);
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SDW_INT("bra-role-supported", prop->bra_role_supported);
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SDW_INT("simplified-channel-prepare-sm", prop->simplified_channel_prepare_sm);
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SDW_INT("imp-def-dp0-interrupts-supported", prop->imp_def_dp0_interrupts_supported);
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SDW_INT("imp-def-bpt-supported", prop->imp_def_bpt_supported);
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/* Add bulk register access mode property pointers. */
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for (i = 0; i < prop->bra_mode_count && i < SOUNDWIRE_MAX_MODE; i++) {
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struct acpi_dp *bra = acpi_dp_new_table(bra_mode_names[i].acpi_name);
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acpi_dp_add_child(dsd, bra_mode_names[i].sdw_name, bra);
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}
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}
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static void soundwire_gen_dpn(struct acpi_dp *dsd, const struct soundwire_dpn *prop)
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{
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size_t i;
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SDW_INT("data-port-type", prop->data_port_type);
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SDW_INT("max-grouping-supported", prop->max_grouping_supported);
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SDW_INT("imp-def-dpn-interrupts-supported", prop->imp_def_dpn_interrupts_supported);
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SDW_INT("modes-supported", prop->modes_supported);
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SDW_INT("max-async-buffer", prop->max_async_buffer);
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SDW_INT("block-packing-mode", prop->block_packing_mode);
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SDW_INT("port-encoding-type", prop->port_encoding_type);
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/* Max wordlength configs used if min/max not supported. */
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if (prop->port_wordlength_configs_count > 0 &&
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prop->port_wordlength_configs_count < SOUNDWIRE_MAX) {
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SDW_INT_ARRAY("port-wordlength-configs", prop->port_wordlength_configs);
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} else {
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SDW_INT("port-max-wordlength", prop->port_max_wordlength);
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SDW_INT("port-min-wordlength", prop->port_min_wordlength);
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}
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/* Channel Prepare Timeout only used without simplified Channel Prepare. */
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SDW_INT("simplified-channelprepare-sm", prop->simplified_channelprepare_sm);
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if (!prop->simplified_channelprepare_sm)
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SDW_INT("port-channelprepare-timeout", prop->port_channelprepare_timeout);
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/* Channel number list used if min/max not supported. */
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if (prop->channel_number_list_count > 0 &&
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prop->channel_number_list_count < SOUNDWIRE_MAX) {
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SDW_INT_ARRAY("channel-number-list", prop->channel_number_list);
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} else {
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SDW_INT("min-channel-number", prop->min_channel_number);
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SDW_INT("max-channel-number", prop->max_channel_number);
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}
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if (prop->channel_combination_list_count > 0 &&
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prop->channel_combination_list_count < SOUNDWIRE_MAX) {
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SDW_INT_ARRAY("channel-combination-list", prop->channel_combination_list);
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}
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/* Add reference to Audio Mode properties. */
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for (i = 0; i < prop->port_audio_mode_count && i < SOUNDWIRE_MAX_MODE; i++) {
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struct acpi_dp *am = acpi_dp_new_table(audio_mode_names[i].acpi_name);
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acpi_dp_add_child(dsd, audio_mode_names[i].sdw_name, am);
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}
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}
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void soundwire_gen_controller(struct acpi_dp *dsd, const struct soundwire_controller *prop,
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soundwire_link_prop_cb link_prop_cb)
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{
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size_t i;
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soundwire_gen_interface_revision(dsd);
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SDW_INT("master-count", prop->master_list_count);
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/* Generate properties for each master link on the controller. */
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for (i = 0; i < prop->master_list_count && i < SOUNDWIRE_MAX_LINK; i++) {
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struct acpi_dp *link = acpi_dp_new_table(link_names[i].acpi_name);
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soundwire_gen_link(link, &prop->master_list[i]);
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/* Callback for custom link properties from the controller. */
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if (link_prop_cb)
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link_prop_cb(link, i, prop);
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acpi_dp_add_child(dsd, link_names[i].sdw_name, link);
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}
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}
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void soundwire_gen_codec(struct acpi_dp *dsd, const struct soundwire_codec *codec,
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soundwire_dp_prop_cb dp_prop_cb)
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||||
{
|
||||
const struct soundwire_dpn_entry *entry;
|
||||
const struct soundwire_name_map *name;
|
||||
size_t i;
|
||||
|
||||
/* Generate slave properties for this codec. */
|
||||
soundwire_gen_slave(dsd, codec->slave);
|
||||
|
||||
/* Generate properties for multilane config, if provided. */
|
||||
if (codec->multilane)
|
||||
soundwire_gen_multilane(dsd, codec->multilane);
|
||||
|
||||
/* Generate properties for data port 0, if provided. */
|
||||
if (codec->dp0) {
|
||||
struct acpi_dp *dp0;
|
||||
|
||||
/* First generate any Bulk Register Access mode properties. */
|
||||
for (i = 0; i < SOUNDWIRE_MAX_MODE; i++) {
|
||||
const struct soundwire_bra_mode *prop = codec->dp0_bra_mode[i];
|
||||
struct acpi_dp *bra;
|
||||
|
||||
/* Stop processing at the first undefined BRA mode. */
|
||||
if (!prop)
|
||||
break;
|
||||
name = &bra_mode_names[i];
|
||||
bra = acpi_dp_new_table(name->acpi_name);
|
||||
soundwire_gen_bra_mode(bra, prop);
|
||||
acpi_dp_add_child(dsd, name->sdw_name, bra);
|
||||
}
|
||||
|
||||
name = &dpn_source_names[0];
|
||||
dp0 = acpi_dp_new_table(name->acpi_name);
|
||||
soundwire_gen_dp0(dp0, codec->dp0);
|
||||
|
||||
/* Callback for custom properties from the codec. */
|
||||
if (dp_prop_cb)
|
||||
dp_prop_cb(dp0, 0, codec);
|
||||
acpi_dp_add_child(dsd, name->sdw_name, dp0);
|
||||
}
|
||||
|
||||
/*
|
||||
* First generate audio modes for the data ports. This results in unnecessary
|
||||
* (but harmless) references to the audio modes at the codec level, but it allows
|
||||
* the data ports to use these objects without duplication.
|
||||
*/
|
||||
for (i = 0; i < SOUNDWIRE_MAX_MODE; i++) {
|
||||
const struct soundwire_audio_mode *prop = codec->audio_mode[i];
|
||||
struct acpi_dp *am;
|
||||
|
||||
/* Stop processing at the first undefined audio mode. */
|
||||
if (!prop)
|
||||
break;
|
||||
name = &audio_mode_names[i];
|
||||
am = acpi_dp_new_table(name->acpi_name);
|
||||
soundwire_gen_audio_mode(am, prop);
|
||||
acpi_dp_add_child(dsd, name->sdw_name, am);
|
||||
}
|
||||
|
||||
/* Now generate properties for source/slave on each defined data port. */
|
||||
for (entry = codec->dpn; entry; entry++) {
|
||||
struct acpi_dp *dpn;
|
||||
|
||||
/* Stop processing at the first invalid data port. */
|
||||
if (entry->port < SOUNDWIRE_MIN_DPN || entry->port > SOUNDWIRE_MAX_DPN)
|
||||
break;
|
||||
|
||||
if (entry->source) {
|
||||
name = &dpn_source_names[entry->port];
|
||||
dpn = acpi_dp_new_table(name->acpi_name);
|
||||
soundwire_gen_dpn(dpn, entry->source);
|
||||
|
||||
/* Callback for custom properties from the codec. */
|
||||
if (dp_prop_cb)
|
||||
dp_prop_cb(dpn, entry->port, codec);
|
||||
acpi_dp_add_child(dsd, name->sdw_name, dpn);
|
||||
}
|
||||
if (entry->sink) {
|
||||
name = &dpn_sink_names[entry->port];
|
||||
dpn = acpi_dp_new_table(name->acpi_name);
|
||||
soundwire_gen_dpn(dpn, entry->sink);
|
||||
|
||||
/* Callback for custom properties from the codec. */
|
||||
if (dp_prop_cb)
|
||||
dp_prop_cb(dpn, entry->port, codec);
|
||||
acpi_dp_add_child(dsd, name->sdw_name, dpn);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0-only */
|
||||
|
||||
#ifndef __ACPI_ACPI_SOUNDWIRE_H__
|
||||
#define __ACPI_ACPI_SOUNDWIRE_H__
|
||||
|
||||
#include <acpi/acpi_device.h>
|
||||
#include <device/soundwire.h>
|
||||
|
||||
/**
|
||||
* soundwire_dp_prop_cb() - Callback to add custom data port properties.
|
||||
* @dsd: ACPI Device Property handle for this data port.
|
||||
* @port_id: Data Port ID from 0-14.
|
||||
* @codec: Properties that were passed to soundwire_gen_codec().
|
||||
*/
|
||||
typedef void soundwire_dp_prop_cb(struct acpi_dp *dsd, unsigned int port_id,
|
||||
const struct soundwire_codec *codec);
|
||||
|
||||
/**
|
||||
* soundwire_gen_codec() - Generate SoundWire properties for codec device.
|
||||
* @dsd: ACPI Device Property handle.
|
||||
* @prop: Properties for codec which includes all other properties.
|
||||
* @dp_prop_cb: Callback to allow custom codec properties.
|
||||
*/
|
||||
void soundwire_gen_codec(struct acpi_dp *dsd, const struct soundwire_codec *codec,
|
||||
soundwire_dp_prop_cb dp_prop_cb);
|
||||
|
||||
/**
|
||||
* soundwire_link_prop_cb() - Callback to add custom link properties.
|
||||
* @dsd: ACPI Device Property handle for master link.
|
||||
* @link_id: Link number for this master.
|
||||
* @controller: Properties that were passed to soundwire_gen_controller().
|
||||
*/
|
||||
typedef void soundwire_link_prop_cb(struct acpi_dp *dsd, unsigned int link_id,
|
||||
const struct soundwire_controller *controller);
|
||||
|
||||
/**
|
||||
* soundwire_gen_controller() - Generate SoundWire properties for master links.
|
||||
* @dsd: ACPI Device Property handle for controller.
|
||||
* @prop: Properties for controller which includes all other properties.
|
||||
* @link_prop_cb: Callback to allow custom link properties.
|
||||
*/
|
||||
void soundwire_gen_controller(struct acpi_dp *dsd, const struct soundwire_controller *prop,
|
||||
soundwire_link_prop_cb link_prop_cb);
|
||||
|
||||
#endif /* __ACPI_ACPI_SOUNDWIRE_H__ */
|
||||
Loading…
Reference in New Issue