Enable OLED support for Teensy 3.2/LC (#7591)

* I2C_TIMEOUT is not defined on arm teensy

* Work round teensy having different ChibiOS config options

* Stash OLED conf files

* update comment

* update comment

* Remove stm32 alias to allow teensy alt mode

format code according to conventions [skip ci]

5 files changed, 28 insertions, 10 deletions

diff --git a/drivers/chibios/i2c_master.c b/drivers/chibios/i2c_master.c
index ede915fa4a..4bd8e2af76 100644
--- a/drivers/chibios/i2c_master.c
+++ b/drivers/chibios/i2c_master.c
@@ -32,7 +32,9 @@
 static uint8_t i2c_address;
 
 static const I2CConfig i2cconfig = {
-#ifdef USE_I2CV1
+#if defined(USE_I2CV1_CONTRIB)
+    I2C1_CLOCK_SPEED,
+#elif defined(USE_I2CV1)
     I2C1_OPMODE,
     I2C1_CLOCK_SPEED,
     I2C1_DUTY_CYCLE,
@@ -62,8 +64,8 @@ __attribute__((weak)) void i2c_init(void) {
 
     chThdSleepMilliseconds(10);
 #if defined(USE_GPIOV1)
-    palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
-    palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
+    palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, I2C1_SCL_PAL_MODE);
+    palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, I2C1_SDA_PAL_MODE);
 #else
     palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_ALTERNATE(I2C1_SCL_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
     palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_ALTERNATE(I2C1_SDA_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
diff --git a/drivers/chibios/i2c_master.h b/drivers/chibios/i2c_master.h
index ec36b31eb7..1b08d33ee6 100644
--- a/drivers/chibios/i2c_master.h
+++ b/drivers/chibios/i2c_master.h
@@ -81,7 +81,14 @@
 #    define I2C_DRIVER I2CD1
 #endif
 
-#ifndef USE_GPIOV1
+#ifdef USE_GPIOV1
+#    ifndef I2C1_SCL_PAL_MODE
+#        define I2C1_SCL_PAL_MODE PAL_MODE_STM32_ALTERNATE_OPENDRAIN
+#    endif
+#    ifndef I2C1_SDA_PAL_MODE
+#        define I2C1_SDA_PAL_MODE PAL_MODE_STM32_ALTERNATE_OPENDRAIN
+#    endif
+#else
 // The default PAL alternate modes are used to signal that the pins are used for I2C
 #    ifndef I2C1_SCL_PAL_MODE
 #        define I2C1_SCL_PAL_MODE 4
diff --git a/drivers/oled/oled_driver.c b/drivers/oled/oled_driver.c
index 977b701783..f1990567f7 100644
--- a/drivers/oled/oled_driver.c
+++ b/drivers/oled/oled_driver.c
@@ -82,14 +82,12 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define I2C_CMD 0x00
 #define I2C_DATA 0x40
 #if defined(__AVR__)
-// already defined on ARM
-#    define I2C_TIMEOUT 100
-#    define I2C_TRANSMIT_P(data) i2c_transmit_P((OLED_DISPLAY_ADDRESS << 1), &data[0], sizeof(data), I2C_TIMEOUT)
+#    define I2C_TRANSMIT_P(data) i2c_transmit_P((OLED_DISPLAY_ADDRESS << 1), &data[0], sizeof(data), OLED_I2C_TIMEOUT)
 #else  // defined(__AVR__)
-#    define I2C_TRANSMIT_P(data) i2c_transmit((OLED_DISPLAY_ADDRESS << 1), &data[0], sizeof(data), I2C_TIMEOUT)
+#    define I2C_TRANSMIT_P(data) i2c_transmit((OLED_DISPLAY_ADDRESS << 1), &data[0], sizeof(data), OLED_I2C_TIMEOUT)
 #endif  // defined(__AVR__)
-#define I2C_TRANSMIT(data) i2c_transmit((OLED_DISPLAY_ADDRESS << 1), &data[0], sizeof(data), I2C_TIMEOUT)
-#define I2C_WRITE_REG(mode, data, size) i2c_writeReg((OLED_DISPLAY_ADDRESS << 1), mode, data, size, I2C_TIMEOUT)
+#define I2C_TRANSMIT(data) i2c_transmit((OLED_DISPLAY_ADDRESS << 1), &data[0], sizeof(data), OLED_I2C_TIMEOUT)
+#define I2C_WRITE_REG(mode, data, size) i2c_writeReg((OLED_DISPLAY_ADDRESS << 1), mode, data, size, OLED_I2C_TIMEOUT)
 
 #define HAS_FLAGS(bits, flags) ((bits & flags) == flags)
 
diff --git a/drivers/oled/oled_driver.h b/drivers/oled/oled_driver.h
index 5d0184c55d..4e69f8845c 100644
--- a/drivers/oled/oled_driver.h
+++ b/drivers/oled/oled_driver.h
@@ -150,6 +150,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #    endif
 #endif
 
+#if !defined(OLED_I2C_TIMEOUT)
+#    define OLED_I2C_TIMEOUT 100
+#endif
+
 // OLED Rotation enum values are flags
 typedef enum {
     OLED_ROTATION_0   = 0,
diff --git a/tmk_core/common/chibios/chibios_config.h b/tmk_core/common/chibios/chibios_config.h
index 2725296083..b4d96465d1 100644
--- a/tmk_core/common/chibios/chibios_config.h
+++ b/tmk_core/common/chibios/chibios_config.h
@@ -22,3 +22,10 @@
 #if defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX) || defined(STM32L1XX)
 #    define USE_I2CV1
 #endif
+
+// teensy
+#if defined(K20x) || defined(KL2x)
+#    define USE_I2CV1
+#    define USE_I2CV1_CONTRIB  // for some reason a bunch of ChibiOS-Contrib boards only have clock_speed
+#    define USE_GPIOV1
+#endif