[PATCHv5 09/11] fbdev: ssd1307fb: Add module parameter to set the initial contrast
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From: Thomas Niederprüm <hidden>
Date: 2015-03-24 21:21:26
Also in:
lkml
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
This patch adds the module parameter "contrast" to determine the contrast value that is used to initialize the display. This setting applies to all instances of the driver. Signed-off-by: Thomas Niederprüm <redacted> --- drivers/video/fbdev/ssd1307fb.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index 6149827..d5aec5c 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c@@ -43,6 +43,9 @@ static u_int refreshrate = REFRESHRATE; module_param(refreshrate, uint, 0); +static u_int contrast = 127; +module_param(contrast, uint, S_IRUGO); + struct ssd1307fb_par; struct ssd1307fb_deviceinfo {
@@ -525,7 +528,7 @@ static int ssd1307fb_probe(struct i2c_client *client, par->com_lrremap = of_property_read_bool(node, "solomon,com-lrremap"); par->com_invdir = of_property_read_bool(node, "solomon,com-invdir"); - par->contrast = 127; + par->contrast = contrast; par->vcomh = par->device_info->default_vcomh; /* Setup display timing */
--
2.3.0