Bringing Massdrop keyboard hardware configuration to keyboard level (#4593)

MCU Pins for debugging, LED, boot tracing, and shift registers are now configurable at keyboard level.
Macros led_* replaced by DBG_LED_*
Macros m15_* replaced by DBG_1_*
Macros m27_* replaced by DBG_2_*
Macros m28_* replaced by DBG_3_*
For CTRL and ALT keyboards, debug boot tracing pin default now set to pad M27 instead of M28 since although M28 is not being used, it is technically a signal for USB port detection.
m15_print(...) renamed to dbg_print(...) to get away from hard coded port names.
dbg_print function now follows similar pattern to debug led output.

1 files changed, 23 insertions, 16 deletions

diff --git a/tmk_core/protocol/arm_atsam/spi.h b/tmk_core/protocol/arm_atsam/spi.h
index 3412dfc364..4739b775db 100644
--- a/tmk_core/protocol/arm_atsam/spi.h
+++ b/tmk_core/protocol/arm_atsam/spi.h
@@ -18,21 +18,28 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifndef _SPI_H_
 #define _SPI_H_
 
-//TODO: PS: Should bring ports to keyboard configuration
+/* Macros for Shift Register control */
+#define SR_EXP_RCLK_LO PORT->Group[SR_EXP_RCLK_PORT].OUTCLR.reg = (1 << SR_EXP_RCLK_PIN)
+#define SR_EXP_RCLK_HI PORT->Group[SR_EXP_RCLK_PORT].OUTSET.reg = (1 << SR_EXP_RCLK_PIN)
+#define SR_EXP_OE_N_ENA PORT->Group[SR_EXP_OE_N_PORT].OUTCLR.reg = (1 << SR_EXP_OE_N_PIN)
+#define SR_EXP_OE_N_DIS PORT->Group[SR_EXP_OE_N_PORT].OUTSET.reg = (1 << SR_EXP_OE_N_PIN)
 
-#define SCSPI           SERCOM2
+/* Determine bits to set for mux selection */
+#if SR_EXP_DATAOUT_PIN % 2 == 0
+#define SR_EXP_DATAOUT_MUX_SEL PMUXE
+#else
+#define SR_EXP_DATAOUT_MUX_SEL PMUXO
+#endif
 
-#define P14_DIR         0x00004000                             /* PIN14 DIR Bit */
-#define P14_OUT         0x00004000                             /* PIN14 OUT Bit */
-#define P15_DIR         0x00008000                             /* PIN15 DIR Bit */
-#define P15_OUT         0x00008000                             /* PIN15 OUT Bit */
-
-#define SC2_RCLCK_LO    REG_PORT_OUTCLR1 = P14_OUT             /* PB14 Low, SC2_RCLCK Low                            */
-#define SC2_RCLCK_HI    REG_PORT_OUTSET1 = P14_OUT             /* PB14 High, SC2_RCLCK High                          */
-#define SC2_OE_ENA      REG_PORT_OUTCLR1 = P15_OUT             /* PB15 Low, SC2_OE_N Low (Shift register enabled)    */
-#define SC2_OE_DIS      REG_PORT_OUTSET1 = P15_OUT             /* PB15 High, SC2_OE_N High (Shift register disabled) */
-#define SC2_DIRSET      REG_PORT_DIRSET1 = P14_DIR | P15_DIR;  /* PB14 PB15 OUT                                      */
+/* Determine bits to set for mux selection */
+#if SR_EXP_SCLK_PIN % 2 == 0
+#define SR_EXP_SCLK_MUX_SEL PMUXE
+#else
+#define SR_EXP_SCLK_MUX_SEL PMUXO
+#endif
 
+/* Data structure to define Shift Register output expander hardware */
+/* This structure gets shifted into registers LSB first */
 typedef union {
   struct {
     uint16_t RSVD4:1;          /*!< bit:      0                                               */
@@ -53,11 +60,11 @@ typedef union {
     uint16_t HUB_CONNECT:1;    /*!< bit:     15  SIGNAL VBUS CONNECT TO USB HUB WHEN 1        */
   } bit;                       /*!< Structure used for bit access                             */
   uint16_t reg;                /*!< Type      used for register access                        */
-} Srdata_t;
+} sr_exp_t;
 
-extern Srdata_t srdata;
+extern sr_exp_t sr_exp_data;
 
-void SPI_WriteSRData(void);
-void SPI_Init(void);
+void SR_EXP_WriteData(void);
+void SR_EXP_Init(void);
 
 #endif //_SPI_H_