summaryrefslogtreecommitdiff
path: root/drivers/auxdisplay/charlcd.h
diff options
context:
space:
mode:
authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-08-06 16:14:44 +0900
committerMiguel Ojeda <miguel.ojeda.sandonis@gmail.com>2019-08-08 19:59:17 +0200
commit75354284cc3aa58f7e54d479d9bee69bd2ca828f (patch)
tree7270d97cfdff675585fe1c1292cba2a3b269826d /drivers/auxdisplay/charlcd.h
parentba2c1340d7c8e1ba5957d814ec18592b315fd4de (diff)
auxdisplay: charlcd: move charlcd.h to drivers/auxdisplay
This header is included in drivers/auxdisplay/. Make it a local header. Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Diffstat (limited to 'drivers/auxdisplay/charlcd.h')
-rw-r--r--drivers/auxdisplay/charlcd.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/auxdisplay/charlcd.h b/drivers/auxdisplay/charlcd.h
new file mode 100644
index 000000000000..8cf6c18b0adb
--- /dev/null
+++ b/drivers/auxdisplay/charlcd.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Character LCD driver for Linux
+ *
+ * Copyright (C) 2000-2008, Willy Tarreau <w@1wt.eu>
+ * Copyright (C) 2016-2017 Glider bvba
+ */
+
+struct charlcd {
+ const struct charlcd_ops *ops;
+ const unsigned char *char_conv; /* Optional */
+
+ int ifwidth; /* 4-bit or 8-bit (default) */
+ int height;
+ int width;
+ int bwidth; /* Default set by charlcd_alloc() */
+ int hwidth; /* Default set by charlcd_alloc() */
+
+ void *drvdata; /* Set by charlcd_alloc() */
+};
+
+struct charlcd_ops {
+ /* Required */
+ void (*write_cmd)(struct charlcd *lcd, int cmd);
+ void (*write_data)(struct charlcd *lcd, int data);
+
+ /* Optional */
+ void (*write_cmd_raw4)(struct charlcd *lcd, int cmd); /* 4-bit only */
+ void (*clear_fast)(struct charlcd *lcd);
+ void (*backlight)(struct charlcd *lcd, int on);
+};
+
+struct charlcd *charlcd_alloc(unsigned int drvdata_size);
+void charlcd_free(struct charlcd *lcd);
+
+int charlcd_register(struct charlcd *lcd);
+int charlcd_unregister(struct charlcd *lcd);
+
+void charlcd_poke(struct charlcd *lcd);