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Diffstat (limited to 'drivers/led/issi/is31fl3737.c')
-rw-r--r--drivers/led/issi/is31fl3737.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/led/issi/is31fl3737.c b/drivers/led/issi/is31fl3737.c
index 0bb4ddd425..62862e0d41 100644
--- a/drivers/led/issi/is31fl3737.c
+++ b/drivers/led/issi/is31fl3737.c
@@ -1,6 +1,7 @@
/* Copyright 2017 Jason Williams
* Copyright 2018 Jack Humbert
* Copyright 2018 Yiancar
+ * Copyright 2021 Doni Crosby
*
* 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
@@ -56,6 +57,14 @@
# define ISSI_PERSISTENCE 0
#endif
+#ifndef ISSI_SWPULLUP
+# define ISSI_SWPULLUP PUR_0R
+#endif
+
+#ifndef ISSI_CSPULLUP
+# define ISSI_CSPULLUP PUR_0R
+#endif
+
// Transfer buffer for TWITransmitData()
uint8_t g_twi_transfer_buffer[20];
@@ -143,6 +152,10 @@ void IS31FL3737_init(uint8_t addr) {
// Select PG3
IS31FL3737_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_FUNCTION);
+ // Set de-ghost pull-up resistors (SWx)
+ IS31FL3737_write_register(addr, ISSI_REG_SWPULLUP, ISSI_SWPULLUP);
+ // Set de-ghost pull-down resistors (CSx)
+ IS31FL3737_write_register(addr, ISSI_REG_CSPULLUP, ISSI_CSPULLUP);
// Set global current to maximum.
IS31FL3737_write_register(addr, ISSI_REG_GLOBALCURRENT, 0xFF);
// Disable software shutdown.