Implement GPIO abstraction for atsam (#13567)

* Implement GPIO abstraction for atsam

* Convert Drop boards to normal matrix config

* Work round pin conflicts and matrix delay

1 files changed, 0 insertions, 76 deletions

diff --git a/keyboards/massdrop/ctrl/matrix.c b/keyboards/massdrop/ctrl/matrix.c
deleted file mode 100644
index a542d18c29..0000000000
--- a/keyboards/massdrop/ctrl/matrix.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
-Copyright 2018 Massdrop Inc.
-
-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
-the Free Software Foundation, either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "ctrl.h"
-#include "d51_util.h"
-
-const uint8_t row_ports[] = {MATRIX_ROW_PORTS};
-const uint8_t row_pins[]  = {MATRIX_ROW_PINS};
-const uint8_t col_ports[] = {MATRIX_COL_PORTS};
-const uint8_t col_pins[]  = {MATRIX_COL_PINS};
-uint32_t      row_masks[2];  // NOTE: If more than PA PB used in the future, adjust code to accommodate
-
-void matrix_init_custom(void) {
-    row_masks[PA] = 0;
-    row_masks[PB] = 0;
-
-    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
-        PORT->Group[row_ports[row]].DIRCLR.reg                       = 1 << row_pins[row];  // Input
-        PORT->Group[row_ports[row]].OUTCLR.reg                       = 1 << row_pins[row];  // Low
-        PORT->Group[row_ports[row]].PINCFG[row_pins[row]].bit.INEN   = 1;                   // Input Enable,
-        PORT->Group[row_ports[row]].PINCFG[row_pins[row]].bit.PULLEN = 1;                   // Pull Enable
-        row_masks[row_ports[row]] |= 1 << row_pins[row];                                    // Add pin to proper row mask
-    }
-
-    for (uint8_t col = 0; col < MATRIX_COLS; col++) {
-        PORT->Group[col_ports[col]].DIRSET.reg = 1 << col_pins[col];  // Output
-        PORT->Group[col_ports[col]].OUTCLR.reg = 1 << col_pins[col];  // Low
-    }
-}
-
-bool matrix_scan_custom(matrix_row_t current_matrix[]) {
-    matrix_row_t raw[MATRIX_ROWS] = {0};
-    uint32_t     scans[2];  // PA PB
-
-    for (uint8_t col = 0; col < MATRIX_COLS; col++) {
-        PORT->Group[col_ports[col]].OUTSET.reg = 1 << col_pins[col];  // Set col output
-
-        matrix_io_delay();  // Delay for output
-
-        scans[PA] = PORT->Group[PA].IN.reg & row_masks[PA];  // Read PA row pins data
-        scans[PB] = PORT->Group[PB].IN.reg & row_masks[PB];  // Read PB row pins data
-
-        PORT->Group[col_ports[col]].OUTCLR.reg = 1 << col_pins[col];  // Clear col output
-
-        for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
-            // Move scan bits from scans array into proper row bit locations
-            if (scans[row_ports[row]] & (1 << row_pins[row])) {
-                raw[row] |= 1 << col;
-            }
-        }
-    }
-
-    bool changed = false;
-    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
-        if (current_matrix[row] != raw[row]) {
-            current_matrix[row] = raw[row];
-            changed             = true;
-        }
-    }
-
-    return changed;
-}