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Qcom (sdm845) audio

db410c notes

From 96boards docsdragonboard/dragonboard410c/guides/enable-ls-i2s.md.html

• Primary MI2S - Supports only playback
• Secondary MI2S - Supports only playback
• Tertiary MI2S - Supports only capture

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SMB2 DEBUG: (addr = CHGR_BASE, val = 0x00)
SMB2 DEBUG: (addr = 0x1001, val = 0x00)
SMB2 DEBUG: (addr = 0x1002, val = 0x00)
SMB2 DEBUG: (addr = 0x1003, val = 0x00)
SMB2 DEBUG: (addr = 0x1004, val = 0x02)
SMB2 DEBUG: (addr = 0x1005, val = 0x61)
SMB2 DEBUG: (addr = BATTERY_CHARGER_STATUS_1_REG, val = 0x03)
SMB2 DEBUG: (addr = BATTERY_CHARGER_STATUS_2_REG, val = INPUT_CURRENT_LIMITED_BIT)
SMB2 DEBUG: (addr = CHG_OPTION_REG, val = 0x00)
SMB2 DEBUG: (addr = BATTERY_CHARGER_STATUS_3_REG, val = FV_POST_JEITA_MASK=0x7a)

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#!/bin/bash

# sudo uhubctl -a off -p 2 -n 2109:2812 && printf "%b" "\0x01" > /dev/ttyACM0 && sleep 15 && sudo uhubctl -a on -p 2 -n 2109:2812

export TOOLSDIR=$HOME/pmos/tools

. $HOME/pmos/tools/pmenv
. $HOME/pmos/tools/automation.sh
. ~/pmos/pmbootstrap/helpers/envkernel.sh

calebccff

Writing a RIL HAL for AOSP / mainline

References

• How to step by step set up a data connection over QMI
  • Uses QMI USB modem, probably quite similar for us - but over QRTR instead of USB
• An introduction to libqmi
  • QMI is based on "services" which provide different functionality
• Introduction to ModemManager
  • Nice PDF explaining how the pieces go together.

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#!/bin/ash

# You may need to disable nftables for this to work, it's probably a bad idea to do so

sysctl net.ipv4.ip_forward=1
iptables -P FORWARD ACCEPT
iptables -A POSTROUTING -t nat -j MASQUERADE -s 192.168.250.0/24

echo "ip route add default via 192.168.250.1 dev eth0; setprop net.dns1 1.1.1.1" | waydroid shell

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#!/usr/bin/python3

import argparse
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.patches as patches
from scipy.stats import linregress

pmics = ["pmi8998", "pm660"]
fabs = ["gf", "tsmc", "smic", "mgna"]

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#!/bin/bash

##############
## WARNING: This script uses `rm -rf` with variables, make sure you know what it's doing before running it
## and don't hold me accountable if you accidentally delete important stuff.
## Whilst I have tested it, your setup will be different and you should edit this to match.
## See more details at the bottom.

ANDROID_MAINLINE_DIR="/PATH/TO/AOSP/SOURCE"

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#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>

#define HDMI_EDID_PATH "edid.bin"

#define ALOGE(...) (printf(__VA_ARGS__))

struct edid_extension {
    unsigned char tag;

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#!/bin/bash

# basically what at-to_bootloader_hard does, turns off the USB port the phone is connected to so that
# VBUS is low and the device won't go to EDL (yay oneplus)
# then sends a byte to the arduino to tell it to perform a hard reboot by pressing volume up and power
# finally turn the usb port back on
# sudo uhubctl -a off -p 2 -n 2109:2812 && printf "%b" "\0x01" > /dev/ttyACM0 && sleep 15 && sudo uhubctl -a on -p 2 -n 2109:2812

export TOOLSDIR=$HOME/pmos/tools

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#!/bin/bash

exec &> /var/log/sdm845-modem-prepare.log

AID=$(qmicli -d qrtr://0 -p --uim-get-card-status | grep -E "([A-Z0-9]{2}:){15}[A-Z0-9]{2}" | xargs)

while [ -z "$AID" ]; do
	sleep 2
	AID=$(qmicli -d qrtr://0 -p --uim-get-card-status | grep -E "([A-Z0-9]{2}:){15}[A-Z0-9]{2}" | xargs)
done