summaryrefslogtreecommitdiffstats
path: root/include/asm-sparc/display7seg.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-sparc/display7seg.h')
-rw-r--r--include/asm-sparc/display7seg.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/include/asm-sparc/display7seg.h b/include/asm-sparc/display7seg.h
new file mode 100644
index 000000000000..86d4a901df24
--- /dev/null
+++ b/include/asm-sparc/display7seg.h
@@ -0,0 +1,79 @@
+/*
+ *
+ * display7seg - Driver interface for the 7-segment display
+ * present on Sun Microsystems CP1400 and CP1500
+ *
+ * Copyright (c) 2000 Eric Brower <ebrower@usa.net>
+ *
+ */
+
+#ifndef __display7seg_h__
+#define __display7seg_h__
+
+#define D7S_IOC 'p'
+
+#define D7SIOCRD _IOR(D7S_IOC, 0x45, int) /* Read device state */
+#define D7SIOCWR _IOW(D7S_IOC, 0x46, int) /* Write device state */
+#define D7SIOCTM _IO (D7S_IOC, 0x47) /* Translate mode (FLIP)*/
+
+/*
+ * ioctl flag definitions
+ *
+ * POINT - Toggle decimal point (0=absent 1=present)
+ * ALARM - Toggle alarm LED (0=green 1=red)
+ * FLIP - Toggle inverted mode (0=normal 1=flipped)
+ * bits 0-4 - Character displayed (see definitions below)
+ *
+ * Display segments are defined as follows,
+ * subject to D7S_FLIP register state:
+ *
+ * a
+ * ---
+ * f| |b
+ * -g-
+ * e| |c
+ * ---
+ * d
+ */
+
+#define D7S_POINT (1 << 7) /* Decimal point*/
+#define D7S_ALARM (1 << 6) /* Alarm LED */
+#define D7S_FLIP (1 << 5) /* Flip display */
+
+#define D7S_0 0x00 /* Numerals 0-9 */
+#define D7S_1 0x01
+#define D7S_2 0x02
+#define D7S_3 0x03
+#define D7S_4 0x04
+#define D7S_5 0x05
+#define D7S_6 0x06
+#define D7S_7 0x07
+#define D7S_8 0x08
+#define D7S_9 0x09
+#define D7S_A 0x0A /* Letters A-F, H, L, P */
+#define D7S_B 0x0B
+#define D7S_C 0x0C
+#define D7S_D 0x0D
+#define D7S_E 0x0E
+#define D7S_F 0x0F
+#define D7S_H 0x10
+#define D7S_E2 0x11
+#define D7S_L 0x12
+#define D7S_P 0x13
+#define D7S_SEGA 0x14 /* Individual segments */
+#define D7S_SEGB 0x15
+#define D7S_SEGC 0x16
+#define D7S_SEGD 0x17
+#define D7S_SEGE 0x18
+#define D7S_SEGF 0x19
+#define D7S_SEGG 0x1A
+#define D7S_SEGABFG 0x1B /* Segment groupings */
+#define D7S_SEGCDEG 0x1C
+#define D7S_SEGBCEF 0x1D
+#define D7S_SEGADG 0x1E
+#define D7S_BLANK 0x1F /* Clear all segments */
+
+#define D7S_MIN_VAL 0x0
+#define D7S_MAX_VAL 0x1F
+
+#endif /* ifndef __display7seg_h__ */