From 56e3f06a26851976e559aacf7a096c61403304be Mon Sep 17 00:00:00 2001
From: Drashna Jaelre <drashna@live.com>
Date: Sun, 14 Nov 2021 22:03:24 -0800
Subject: Rework and expand Pointing Device support (#14343)

Co-authored-by: Dasky <32983009+daskygit@users.noreply.github.com>
---
 drivers/sensors/cirque_pinnacle_spi.c | 52 +++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 drivers/sensors/cirque_pinnacle_spi.c

(limited to 'drivers/sensors/cirque_pinnacle_spi.c')

diff --git a/drivers/sensors/cirque_pinnacle_spi.c b/drivers/sensors/cirque_pinnacle_spi.c
new file mode 100644
index 0000000000..f3eee88758
--- /dev/null
+++ b/drivers/sensors/cirque_pinnacle_spi.c
@@ -0,0 +1,52 @@
+// Copyright (c) 2018 Cirque Corp. Restrictions apply. See: www.cirque.com/sw-license
+#include "cirque_pinnacle.h"
+#include "spi_master.h"
+#include "print.h"
+#include "debug.h"
+
+// Masks for Cirque Register Access Protocol (RAP)
+#define WRITE_MASK 0x80
+#define READ_MASK 0xA0
+
+extern bool touchpad_init;
+
+/*  RAP Functions */
+// Reads <count> Pinnacle registers starting at <address>
+void RAP_ReadBytes(uint8_t address, uint8_t* data, uint8_t count) {
+    uint8_t cmdByte = READ_MASK | address;  // Form the READ command byte
+    if (touchpad_init) {
+        if (spi_start(CIRQUE_PINNACLE_SPI_CS_PIN, CIRQUE_TRACKPAD_SPI_LSBFIRST, CIRQUE_PINNACLE_SPI_MODE, CIRQUE_PINNACLE_SPI_DIVISOR)) {
+            spi_write(cmdByte);
+            spi_read();  // filler
+            spi_read();  // filler
+            for (uint8_t i = 0; i < count; i++) {
+                data[i] = spi_read();  // each sepsequent read gets another register's contents
+            }
+        } else {
+#ifdef CONSOLE_ENABLE
+            dprintf("error right touchpad\n");
+#endif
+            touchpad_init = false;
+            j
+        }
+        spi_stop();
+    }
+}
+
+// Writes single-byte <data> to <address>
+void RAP_Write(uint8_t address, uint8_t data) {
+    uint8_t cmdByte = WRITE_MASK | address;  // Form the WRITE command byte
+
+    if (touchpad_init) {
+        if (spi_start(CIRQUE_PINNACLE_SPI_CS_PIN, CIRQUE_TRACKPAD_SPI_LSBFIRST, CIRQUE_PINNACLE_SPI_MODE, CIRQUE_PINNACLE_SPI_DIVISOR)) {
+            spi_write(cmdByte);
+            spi_write(data);
+        } else {
+#ifdef CONSOLE_ENABLE
+            dprintf("error right touchpad\n");
+#endif
+            touchpad_init = false;
+        }
+        spi_stop();
+    }
+}
-- 
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