From 91007952e2276d09c4f52c1cc7ceabe3138c52eb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20BOU=C3=89?= <lboue@users.noreply.github.com>
Date: Mon, 13 May 2024 11:21:06 +0100
Subject: [PATCH] [CST816] Add support for Hynitron Microelectronics CST826
 capacitive touch (#6682)

---
 esphome/components/cst816/touchscreen/cst816_touchscreen.cpp | 4 ++++
 esphome/components/cst816/touchscreen/cst816_touchscreen.h   | 1 +
 2 files changed, 5 insertions(+)

diff --git a/esphome/components/cst816/touchscreen/cst816_touchscreen.cpp b/esphome/components/cst816/touchscreen/cst816_touchscreen.cpp
index d2b8cc81f11a..9e59810c7eae 100644
--- a/esphome/components/cst816/touchscreen/cst816_touchscreen.cpp
+++ b/esphome/components/cst816/touchscreen/cst816_touchscreen.cpp
@@ -15,6 +15,7 @@ void CST816Touchscreen::continue_setup_() {
   }
   switch (this->chip_id_) {
     case CST820_CHIP_ID:
+    case CST826_CHIP_ID:
     case CST716_CHIP_ID:
     case CST816S_CHIP_ID:
     case CST816D_CHIP_ID:
@@ -90,6 +91,9 @@ void CST816Touchscreen::dump_config() {
     case CST820_CHIP_ID:
       name = "CST820";
       break;
+    case CST826_CHIP_ID:
+      name = "CST826";
+      break;
     case CST816S_CHIP_ID:
       name = "CST816S";
       break;
diff --git a/esphome/components/cst816/touchscreen/cst816_touchscreen.h b/esphome/components/cst816/touchscreen/cst816_touchscreen.h
index 0d987f27390b..24e664e7ee5f 100644
--- a/esphome/components/cst816/touchscreen/cst816_touchscreen.h
+++ b/esphome/components/cst816/touchscreen/cst816_touchscreen.h
@@ -24,6 +24,7 @@ static const uint8_t REG_SLEEP = 0xE5;
 static const uint8_t REG_IRQ_CTL = 0xFA;
 static const uint8_t IRQ_EN_MOTION = 0x70;
 
+static const uint8_t CST826_CHIP_ID = 0x11;
 static const uint8_t CST820_CHIP_ID = 0xB7;
 static const uint8_t CST816S_CHIP_ID = 0xB4;
 static const uint8_t CST816D_CHIP_ID = 0xB6;