[PATCH 05/11] Add verbose framebuffer device info
Juergen Beisert
jbe at pengutronix.de
Fri Oct 22 12:53:19 EDT 2010
This is patch 3 of 7 to keep the repository bisectable.
Signed-off-by: Juergen Beisert <jbe at pengutronix.de>
---
drivers/video/Kconfig | 6 ++++++
drivers/video/fb.c | 40 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 46 insertions(+), 0 deletions(-)
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index e6ecfc8..f96accc 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -26,6 +26,12 @@ config VIDEO_DELAY_INIT
This entry adds the "mode" parameter to the video device, to setup
the desired videomode prior enabling it at runtime.
+config VIDEO_INFO_VERBOSE
+ bool "verbose video info"
+ help
+ Say 'y' here to be more verbose when running the 'devinfo' command
+ on the framebuffer device.
+
comment "drivers"
config DRIVER_VIDEO_IMX
diff --git a/drivers/video/fb.c b/drivers/video/fb.c
index ca3a4cd..15d993d 100644
--- a/drivers/video/fb.c
+++ b/drivers/video/fb.c
@@ -172,6 +172,45 @@ static struct file_operations fb_ops = {
.ioctl = fb_ioctl,
};
+static void fb_info(struct device_d *fb_dev)
+{
+ struct cdev *cdev = fb_dev->priv;
+ struct fb_info *info = cdev->priv;
+
+ printf(" Video/Mode info:\n");
+#ifdef CONFIG_VIDEO_DELAY_ENABLING
+ printf(" Video output %senabled\n", info->enabled != 0 ? "" : "not ");
+#endif
+ printf(" Current video mode:\n");
+ if (info->active_mode != NULL) {
+ printf(" Name: %s\n", info->active_mode->name);
+#ifdef CONFIG_VIDEO_INFO_VERBOSE
+ if (info->active_mode->refresh == 0)
+ printf(" Refresh rate: undefined\n");
+ else
+ printf(" Refresh rate: %u Hz\n", info->active_mode->refresh);
+ printf(" Horizontal active pixel: %u\n", info->active_mode->xres);
+ printf(" Vertical active lines: %u\n", info->active_mode->yres);
+ printf(" Pixel clock: %u kHz\n", PICOS2KHZ(info->active_mode->pixclock));
+ printf(" Left/Right margin (pixel): %u/%u\n", info->active_mode->left_margin,
+ info->active_mode->right_margin);
+ printf(" Upper/Lower margin (lines): %u/%u\n", info->active_mode->upper_margin,
+ info->active_mode->lower_margin);
+ printf(" HSYNC length in pixel: %u, polarity: %s\n", info->active_mode->hsync_len,
+ (info->active_mode->sync & FB_SYNC_HOR_HIGH_ACT) ? "high" : "low");
+ printf(" VSYNC length in lines: %u, polarity: %s\n", info->active_mode->vsync_len,
+ (info->active_mode->sync & FB_SYNC_VERT_HIGH_ACT) ? "high" : "low");
+ printf(" Colour depth: %u bpp\n", info->bits_per_pixel);
+ printf(" Framebuffer size is: %u bytes\n", cdev->size);
+ /* TODO add the remaining information from fb_videomode. How valuable are they? */
+#endif
+ } else {
+ printf (" No video mode selected yet\n");
+ }
+
+ fb_list_modes(fb_dev->platform_data);
+}
+
static int add_fb_parameter(struct device_d *fb_dev)
{
#ifdef CONFIG_VIDEO_DELAY_INIT
@@ -250,6 +289,7 @@ static int fb_probe(struct device_d *fb_dev)
static struct driver_d fb_driver = {
.name = "framebuffer",
.probe = fb_probe,
+ .info = fb_info,
};
static int framebuffer_init(void)
--
1.7.2.3
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