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Diffstat (limited to 'drivers/led/issi/is31fl3733.c')
-rw-r--r--drivers/led/issi/is31fl3733.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/led/issi/is31fl3733.c b/drivers/led/issi/is31fl3733.c
index 4ddd827caf..c64d035135 100644
--- a/drivers/led/issi/is31fl3733.c
+++ b/drivers/led/issi/is31fl3733.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
@@ -58,6 +59,12 @@
#ifndef ISSI_PWM_FREQUENCY
# define ISSI_PWM_FREQUENCY 0b000 // PFS - IS31FL3733B only
+#ifndef ISSI_SWPULLUP
+# define ISSI_SWPULLUP PUR_0R
+#endif
+
+#ifndef ISSI_CSPULLUP
+# define ISSI_CSPULLUP PUR_0R
#endif
// Transfer buffer for TWITransmitData()
@@ -158,6 +165,10 @@ void IS31FL3733_init(uint8_t addr, uint8_t sync) {
// Select PG3
IS31FL3733_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_FUNCTION);
+ // Set de-ghost pull-up resistors (SWx)
+ IS31FL3733_write_register(addr, ISSI_REG_SWPULLUP, ISSI_SWPULLUP);
+ // Set de-ghost pull-down resistors (CSx)
+ IS31FL3733_write_register(addr, ISSI_REG_CSPULLUP, ISSI_CSPULLUP);
// Set global current to maximum.
IS31FL3733_write_register(addr, ISSI_REG_GLOBALCURRENT, 0xFF);
// Disable software shutdown.