The charge pump setting must have bit D4 set all time according to the SSD1306 App Note. Instead of doing an logical and off shifted setting bit with 0x14 it must be an logical or with 0x10 to ensure D4 is set. Signed-off-by: Julian Scheel <julian@xxxxxxxx> --- drivers/video/fbdev/ssd1307fb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index 1611215..5965a9b 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -389,7 +389,7 @@ static int ssd1307fb_init(struct ssd1307fb_par *par) return ret; ret = ssd1307fb_write_cmd(par->client, - (par->device_info->need_chargepump & 0x1 << 2) & 0x14); + 0x10 | ((par->device_info->need_chargepump & 0x01) << 2)); if (ret < 0) return ret; -- 2.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
