first commit

common/device.h

@@ -0,0 +1,71 @@
+#ifndef DEVICE_H
+#define DEVICE_H
+
+#include "param.h"
+
+/* ================================================================
+ * Unified init / deinit
+ * ================================================================ */
+void device_init(void);
+void device_deinit(void);
+
+/* ================================================================
+ * Framebuffer (/dev/fb0)
+ * ================================================================ */
+int  fb_open(void);
+void fb_close(void);
+void fb_reset(void);
+void fb_put(int x, int y, unsigned int color);
+void fb_fill(int x, int y, int w, int h, unsigned int color);
+void fb_fill_rounded(int x, int y, int w, int h, int r, unsigned int color);
+void fb_clear(void);
+int  fb_get_w(void);
+int  fb_get_h(void);
+
+/* ================================================================
+ * Touchscreen (/dev/input/event0)
+ * ================================================================ */
+int  ts_open(void);
+void ts_close(void);
+void ts_raw_to_screen(int raw_x, int raw_y, int *sx, int *sy);
+int  ts_read(int *sx, int *sy, int *touching);
+int  get_touch_dir(void);
+
+/* ================================================================
+ * BMP loader
+ * ================================================================ */
+unsigned int *bmp_load(const char *filename, int *w, int *h);
+void bmp_display(unsigned int *pixels, int w, int h);
+void show_bmp(unsigned int *pixels, int w, int h, int x0, int y0);
+unsigned int *bmp_reshape(unsigned int *src, int sw, int sh, int dw, int dh);
+void show_char(const unsigned char *font, int idx, int fw, int fh,
+               int x0, int y0, unsigned int color);
+void show_char_scale(const unsigned char *font, int idx, int fw, int fh,
+                     int x0, int y0, int dw, int dh, unsigned int color);
+void show_number(const unsigned char *num_font, int stride, int num,
+                 int fw, int fh, int x0, int y0, int dw, int dh,
+                 unsigned int color);
+void show_string(const unsigned char *font, int fw, int fh,
+                 const char *str, int x0, int y0, int dw, int dh,
+                 unsigned int color);
+
+/* ================================================================
+ * Buzzer (/dev/beep)
+ * ================================================================ */
+int  beep_open(void);
+void beep_close(void);
+void beep_on(void);
+void beep_off(void);
+void beep_freq(int hz);
+void beep_note(int hz, int ms);
+
+/* ================================================================
+ * LED (sysfs: /sys/kernel/gec_ctrl/led_*)
+ * ================================================================ */
+int  led_open(void);
+void led_close(void);
+void led_on(int n);
+void led_off(int n);
+/* n: 1-5 individual, <=0 all */
+
+#endif