From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753251AbbCXVV0 (ORCPT ); Tue, 24 Mar 2015 17:21:26 -0400 Received: from mailgw1.uni-kl.de ([131.246.120.220]:57805 "EHLO mailgw1.uni-kl.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752706AbbCXVVN (ORCPT ); Tue, 24 Mar 2015 17:21:13 -0400 From: =?UTF-8?q?Thomas=20Niederpr=C3=BCm?= To: plagnioj@jcrosoft.com, tomi.valkeinen@ti.com, maxime.ripard@free-electrons.com, kernel@pengutronix.de, shawn.guo@linaro.org, robh+dt@kernel.org Cc: linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, =?UTF-8?q?Thomas=20Niederpr=C3=BCm?= Subject: [PATCHv5 09/11] fbdev: ssd1307fb: Add module parameter to set the initial contrast Date: Tue, 24 Mar 2015 22:23:56 +0100 Message-Id: <1427232238-21099-10-git-send-email-niederp@physik.uni-kl.de> X-Mailer: git-send-email 2.3.0 In-Reply-To: <1427232238-21099-1-git-send-email-niederp@physik.uni-kl.de> References: <1423261694-5939-1-git-send-email-niederp@physik.uni-kl.de> <1427232238-21099-1-git-send-email-niederp@physik.uni-kl.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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