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/adns5050.h | 75 +++++++++++++++++++++-------------------------
 1 file changed, 34 insertions(+), 41 deletions(-)

(limited to 'drivers/sensors/adns5050.h')

diff --git a/drivers/sensors/adns5050.h b/drivers/sensors/adns5050.h
index 5e9edc2962..e45a250196 100644
--- a/drivers/sensors/adns5050.h
+++ b/drivers/sensors/adns5050.h
@@ -21,59 +21,52 @@
 
 #include <stdbool.h>
 
-// Registers
-#define REG_PRODUCT_ID 0x00
-#define REG_REVISION_ID 0x01
-#define REG_MOTION 0x02
-#define REG_DELTA_X 0x03
-#define REG_DELTA_Y 0x04
-#define REG_SQUAL 0x05
-#define REG_SHUTTER_UPPER 0x06
-#define REG_SHUTTER_LOWER 0x07
-#define REG_MAXIMUM_PIXEL 0x08
-#define REG_PIXEL_SUM 0x09
-#define REG_MINIMUM_PIXEL 0x0a
-#define REG_PIXEL_GRAB 0x0b
-#define REG_MOUSE_CONTROL 0x0d
-#define REG_MOUSE_CONTROL2 0x19
-#define REG_LED_DC_MODE 0x22
-#define REG_CHIP_RESET 0x3a
-#define REG_PRODUCT_ID2 0x3e
-#define REG_INV_REV_ID 0x3f
-#define REG_MOTION_BURST 0x63
-
 // CPI values
-#define CPI125 0x11
-#define CPI250 0x12
-#define CPI375 0x13
-#define CPI500 0x14
-#define CPI625 0x15
-#define CPI750 0x16
-#define CPI875 0x17
+// clang-format off
+#define CPI125  0x11
+#define CPI250  0x12
+#define CPI375  0x13
+#define CPI500  0x14
+#define CPI625  0x15
+#define CPI750  0x16
+#define CPI875  0x17
 #define CPI1000 0x18
 #define CPI1125 0x19
 #define CPI1250 0x1a
 #define CPI1375 0x1b
+// clang-format on
+
+#define constrain(amt, low, high) ((amt) < (low) ? (low) : ((amt) > (high) ? (high) : (amt)))
+
+// Definitions for the ADNS serial line.
+#ifndef ADNS5050_SCLK_PIN
+#    error "No clock pin defined -- missing ADNS5050_SCLK_PIN"
+#endif
+
+#ifndef ADNS5050_SDIO_PIN
+#    error "No data pin defined -- missing ADNS5050_SDIO_PIN"
+#endif
 
-#ifdef CONSOLE_ENABLE
-void print_byte(uint8_t byte);
+#ifndef ADNS5050_CS_PIN
+#    error "No chip select pin defined -- missing ADNS5050_CS_PIN"
 #endif
 
 typedef struct {
     int8_t dx;
     int8_t dy;
-} report_adns_t;
+} report_adns5050_t;
 
 // A bunch of functions to implement the ADNS5050-specific serial protocol.
 // Note that the "serial.h" driver is insufficient, because it does not
 // manually manipulate a serial clock signal.
-void          adns_init(void);
-void          adns_sync(void);
-uint8_t       adns_serial_read(void);
-void          adns_serial_write(uint8_t data);
-uint8_t       adns_read_reg(uint8_t reg_addr);
-void          adns_write_reg(uint8_t reg_addr, uint8_t data);
-report_adns_t adns_read_burst(void);
-int8_t        convert_twoscomp(uint8_t data);
-void          adns_set_cpi(uint8_t cpi);
-bool          adns_check_signature(void);
+void              adns5050_init(void);
+void              adns5050_sync(void);
+uint8_t           adns5050_serial_read(void);
+void              adns5050_serial_write(uint8_t data);
+uint8_t           adns5050_read_reg(uint8_t reg_addr);
+void              adns5050_write_reg(uint8_t reg_addr, uint8_t data);
+report_adns5050_t adns5050_read_burst(void);
+void              adns5050_set_cpi(uint16_t cpi);
+uint16_t          adns5050_get_cpi(void);
+int8_t            convert_twoscomp(uint8_t data);
+bool              adns5050_check_signature(void);
-- 
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