api: export LCD device to external apps
This patch exports LCD info-query and bitmap-rendering functions to
external apps.
This patch is tested on a Seaboard. Because the LCD driver is not yet
upstreamed, the test was done in a local downstream repo.
Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
diff --git a/api/Makefile b/api/Makefile
index 2a64c4d..0e99f74 100644
--- a/api/Makefile
+++ b/api/Makefile
@@ -24,7 +24,8 @@
LIB = $(obj)libapi.o
-COBJS-$(CONFIG_API) += api.o api_net.o api_storage.o api_platform-$(ARCH).o
+COBJS-$(CONFIG_API) += api.o api_display.o api_net.o api_storage.o \
+ api_platform-$(ARCH).o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/api/api.c b/api/api.c
index 853f010..a3bf60a 100644
--- a/api/api.c
+++ b/api/api.c
@@ -553,6 +553,50 @@
return 0;
}
+/*
+ * pseudo signature:
+ *
+ * int API_display_get_info(int type, struct display_info *di)
+ */
+static int API_display_get_info(va_list ap)
+{
+ int type;
+ struct display_info *di;
+
+ type = va_arg(ap, int);
+ di = va_arg(ap, struct display_info *);
+
+ return display_get_info(type, di);
+}
+
+/*
+ * pseudo signature:
+ *
+ * int API_display_draw_bitmap(ulong bitmap, int x, int y)
+ */
+static int API_display_draw_bitmap(va_list ap)
+{
+ ulong bitmap;
+ int x, y;
+
+ bitmap = va_arg(ap, ulong);
+ x = va_arg(ap, int);
+ y = va_arg(ap, int);
+
+ return display_draw_bitmap(bitmap, x, y);
+}
+
+/*
+ * pseudo signature:
+ *
+ * void API_display_clear(void)
+ */
+static int API_display_clear(va_list ap)
+{
+ display_clear();
+ return 0;
+}
+
static cfp_t calls_table[API_MAXCALL] = { NULL, };
/*
@@ -616,6 +660,9 @@
calls_table[API_ENV_GET] = &API_env_get;
calls_table[API_ENV_SET] = &API_env_set;
calls_table[API_ENV_ENUM] = &API_env_enum;
+ calls_table[API_DISPLAY_GET_INFO] = &API_display_get_info;
+ calls_table[API_DISPLAY_DRAW_BITMAP] = &API_display_draw_bitmap;
+ calls_table[API_DISPLAY_CLEAR] = &API_display_clear;
calls_no = API_MAXCALL;
debugf("API initialized with %d calls\n", calls_no);
diff --git a/api/api_display.c b/api/api_display.c
new file mode 100644
index 0000000..6439170
--- /dev/null
+++ b/api/api_display.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <api_public.h>
+#include <lcd.h>
+#include <video_font.h> /* Get font width and height */
+
+/* lcd.h needs BMP_LOGO_HEIGHT to calculate CONSOLE_ROWS */
+#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
+#include <bmp_logo.h>
+#endif
+
+/* TODO(clchiou): add support of video device */
+
+int display_get_info(int type, struct display_info *di)
+{
+ if (!di)
+ return API_EINVAL;
+
+ switch (type) {
+ default:
+ debug("%s: unsupport display device type: %d\n",
+ __FILE__, type);
+ return API_ENODEV;
+#ifdef CONFIG_LCD
+ case DISPLAY_TYPE_LCD:
+ di->pixel_width = panel_info.vl_col;
+ di->pixel_height = panel_info.vl_row;
+ di->screen_rows = CONSOLE_ROWS;
+ di->screen_cols = CONSOLE_COLS;
+ break;
+#endif
+ }
+
+ di->type = type;
+ return 0;
+}
+
+int display_draw_bitmap(ulong bitmap, int x, int y)
+{
+ if (!bitmap)
+ return API_EINVAL;
+#ifdef CONFIG_LCD
+ return lcd_display_bitmap(bitmap, x, y);
+#else
+ return API_ENODEV;
+#endif
+}
+
+void display_clear(void)
+{
+#ifdef CONFIG_LCD
+ lcd_clear();
+#endif
+}
diff --git a/api/api_private.h b/api/api_private.h
index 94a7fc5..988f702 100644
--- a/api/api_private.h
+++ b/api/api_private.h
@@ -45,4 +45,8 @@
void dev_stor_init(void);
+int display_get_info(int type, struct display_info *di);
+int display_draw_bitmap(ulong bitmap, int x, int y);
+void display_clear(void);
+
#endif /* _API_PRIVATE_H_ */
diff --git a/examples/api/demo.c b/examples/api/demo.c
index 65e7491..19d38f6 100644
--- a/examples/api/demo.c
+++ b/examples/api/demo.c
@@ -48,6 +48,7 @@
ulong start, now;
struct device_info *di;
lbasize_t rlen;
+ struct display_info disinfo;
if (!api_search_sig(&sig))
return -1;
@@ -176,6 +177,36 @@
while ((env = ub_env_enum(env)) != NULL)
printf("%s = %s\n", env, ub_env_get(env));
+ printf("\n*** Display ***\n");
+
+ if (ub_display_get_info(DISPLAY_TYPE_LCD, &disinfo)) {
+ printf("LCD info: failed\n");
+ } else {
+ printf("LCD info:\n");
+ printf(" pixel width: %d\n", disinfo.pixel_width);
+ printf(" pixel height: %d\n", disinfo.pixel_height);
+ printf(" screen rows: %d\n", disinfo.screen_rows);
+ printf(" screen cols: %d\n", disinfo.screen_cols);
+ }
+ if (ub_display_get_info(DISPLAY_TYPE_VIDEO, &disinfo)) {
+ printf("video info: failed\n");
+ } else {
+ printf("video info:\n");
+ printf(" pixel width: %d\n", disinfo.pixel_width);
+ printf(" pixel height: %d\n", disinfo.pixel_height);
+ printf(" screen rows: %d\n", disinfo.screen_rows);
+ printf(" screen cols: %d\n", disinfo.screen_cols);
+ }
+
+ printf("*** Press any key to continue ***\n");
+ printf("got char 0x%x\n", ub_getc());
+
+ /*
+ * This only clears messages on screen, not on serial port. It is
+ * equivalent to a no-op if no display is available.
+ */
+ ub_display_clear();
+
/* reset */
printf("\n*** Resetting board ***\n");
ub_reset();
diff --git a/examples/api/glue.c b/examples/api/glue.c
index eff6a7e..d907e3f 100644
--- a/examples/api/glue.c
+++ b/examples/api/glue.c
@@ -402,3 +402,34 @@
return env_name;
}
+
+/****************************************
+ *
+ * display
+ *
+ ****************************************/
+
+int ub_display_get_info(int type, struct display_info *di)
+{
+ int err = 0;
+
+ if (!syscall(API_DISPLAY_GET_INFO, &err, (uint32_t)type, (uint32_t)di))
+ return API_ESYSC;
+
+ return err;
+}
+
+int ub_display_draw_bitmap(ulong bitmap, int x, int y)
+{
+ int err = 0;
+
+ if (!syscall(API_DISPLAY_DRAW_BITMAP, &err, bitmap, x, y))
+ return API_ESYSC;
+
+ return err;
+}
+
+void ub_display_clear(void)
+{
+ syscall(API_DISPLAY_CLEAR, NULL);
+}
diff --git a/examples/api/glue.h b/examples/api/glue.h
index 6bf47d0..e43f7d9 100644
--- a/examples/api/glue.h
+++ b/examples/api/glue.h
@@ -77,4 +77,9 @@
int ub_dev_recv(int handle, void *buf, int len, int *rlen);
struct device_info * ub_dev_get(int);
+/* display */
+int ub_display_get_info(int type, struct display_info *di);
+int ub_display_draw_bitmap(ulong bitmap, int x, int y);
+void ub_display_clear(void);
+
#endif /* _API_GLUE_H_ */
diff --git a/include/api_public.h b/include/api_public.h
index 5940d81..4420c99 100644
--- a/include/api_public.h
+++ b/include/api_public.h
@@ -90,6 +90,9 @@
API_ENV_ENUM,
API_ENV_GET,
API_ENV_SET,
+ API_DISPLAY_GET_INFO,
+ API_DISPLAY_DRAW_BITMAP,
+ API_DISPLAY_CLEAR,
API_MAXCALL
};
@@ -152,4 +155,17 @@
int state;
};
+#define DISPLAY_TYPE_LCD 0x0001
+#define DISPLAY_TYPE_VIDEO 0x0002
+
+struct display_info {
+ int type;
+ /* screen size in pixels */
+ int pixel_width;
+ int pixel_height;
+ /* screen size in rows and columns of text */
+ int screen_rows;
+ int screen_cols;
+};
+
#endif /* _API_PUBLIC_H_ */