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// SPDX-License-Identifier: GPL-2.0-only
package main
import (
"bufio"
"flag"
"fmt"
"log"
"os"
"path/filepath"
"regexp"
"review.coreboot.org/coreboot.git/util/hda-decoder/decoder"
"strconv"
"strings"
)
var indentLevel int = 0
func indentedPrintf(format string, args ...interface{}) (n int, err error) {
s := fmt.Sprintf("%s%s", strings.Repeat("\t", indentLevel), format)
return fmt.Printf(s, args...)
}
func stringToUint32(s string) uint32 {
s = strings.Replace(s, "0x", "", -1)
v, err := strconv.ParseUint(s, 16, 32)
if err != nil {
log.Fatal(err)
}
return uint32(v)
}
func decodeConfig(config uint32) {
out := decoder.ToHumanReadable(decoder.Decode(config))
indentedPrintf("%s,\n", out.PortConnectivity)
indentedPrintf("%s,\n", out.Location)
indentedPrintf("%s,\n", out.DefaultDevice)
indentedPrintf("%s,\n", out.ConnectionType)
indentedPrintf("%s,\n", out.Color)
indentedPrintf("%s,\n", out.Misc)
indentedPrintf("%s, %s\n", out.DefaultAssociation, out.Sequence)
}
func printDisconnectedPort(config uint32) {
// The value 0x411111f0 is not defined in the specification, but is a
// common value vendors use to indicate "not connected".
const nc uint32 = 0x411111f0
// Setting some values (e.g. 0x40000000) as `AZALIA_PIN_CFG_NC(0)` is
// probably harmless. However, we will stay on the safe side for now.
if (config & 0xfffffff0) != nc {
// Do not decode these values, as they would likely describe a
// bogus device which could be slighly confusing.
fmt.Printf("0x%08x), // does not describe a jack or internal device\n", config)
} else {
fmt.Printf("AZALIA_PIN_CFG_NC(%d)),\n", (config & 0x0000000f))
}
}
func decodeFile(path string, codec uint32) {
file, err := os.Open(path)
if err != nil {
log.Fatal(err)
}
defer file.Close()
scanner := bufio.NewScanner(file)
for scanner.Scan() {
fields := strings.Fields(scanner.Text())
pin := stringToUint32(fields[0])
config := stringToUint32(fields[1])
indentedPrintf("AZALIA_PIN_CFG(%d, 0x%02x, ", codec, pin)
if decoder.PortIsConnected(config) {
fmt.Printf("AZALIA_PIN_DESC(\n")
indentLevel += 1
decodeConfig(config)
indentLevel -= 1
indentedPrintf(")),\n")
} else {
printDisconnectedPort(config)
}
}
}
func getFileContents(path string) string {
contents, err := os.ReadFile(path)
if err != nil {
log.Fatal(err)
}
return strings.TrimSpace(string(contents))
}
func getLineCount(path string) int {
return len(strings.Split(getFileContents(path), "\n"))
}
func decodeDeviceCodec(path string, codec uint32, isLastCodec bool, generate bool) {
if generate {
vendorId := getFileContents(path + "/vendor_id")
vendorName := getFileContents(path + "/vendor_name")
chipName := getFileContents(path + "/chip_name")
subsystemId := getFileContents(path + "/subsystem_id")
lineCount := getLineCount(path + "/init_pin_configs")
indentedPrintf("%s, // Vendor/Device ID: %s %s\n", vendorId, vendorName, chipName)
indentedPrintf("%s, // Subsystem ID\n", subsystemId)
indentedPrintf("%d,\n", lineCount+1)
indentedPrintf("AZALIA_SUBVENDOR(%d, %s),\n\n", codec, subsystemId)
}
decodeFile(path+"/init_pin_configs", codec)
if !isLastCodec {
fmt.Printf("\n")
}
}
func decodeDeviceCodecs(generate bool) {
matches, err := filepath.Glob("/sys/class/sound/hwC0D*")
if err != nil {
log.Fatal(err)
}
re := regexp.MustCompile(`D([0-9]+)$`)
for i, match := range matches {
codec := stringToUint32(re.FindStringSubmatch(match)[1])
isLastCodec := (i + 1) == len(matches)
decodeDeviceCodec(match, codec, isLastCodec, generate)
}
}
func isFlagPassed(name string) bool {
found := false
flag.Visit(func(f *flag.Flag) {
if f.Name == name {
found = true
}
})
return found
}
func main() {
codec := flag.Uint64("codec", 0, "Set the codec number when decoding a file\n"+
"This flag is only meaningful in combination with the 'file' flag")
config := flag.Uint64("config", 0, "Decode a single configuration")
file := flag.String("file", "", "Decode configurations in a file\n"+
"The decoder assumes each line in the file has the format: <pin> <config>")
generate := flag.Bool("generate", false, "Automatically generate hda_verb.c for the host device")
flag.Parse()
if isFlagPassed("config") {
decodeConfig(uint32(*config))
} else if isFlagPassed("file") {
decodeFile(*file, uint32(*codec))
} else {
if *generate {
fmt.Printf("/* SPDX-License-Identifier: GPL-2.0-only */\n\n")
fmt.Printf("#include <device/azalia_device.h>\n\n")
fmt.Printf("const u32 cim_verb_data[] = {\n")
indentLevel += 1
}
decodeDeviceCodecs(*generate)
if *generate {
indentLevel -= 1
fmt.Printf("};\n\n")
fmt.Printf("const u32 pc_beep_verbs[] = {};\n")
fmt.Printf("AZALIA_ARRAY_SIZES;\n")
}
}
}
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