From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Thomas=20Niederpr=C3=BCm?= Date: Tue, 24 Mar 2015 21:23:56 +0000 Subject: [PATCHv5 09/11] fbdev: ssd1307fb: Add module parameter to set the initial contrast Message-Id: <1427232238-21099-10-git-send-email-niederp@physik.uni-kl.de> List-Id: References: <1423261694-5939-1-git-send-email-niederp@physik.uni-kl.de> <1427232238-21099-1-git-send-email-niederp@physik.uni-kl.de> In-Reply-To: <1427232238-21099-1-git-send-email-niederp@physik.uni-kl.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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?= 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 Niederpr=C3=BCm --- 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/ssd1307f= b.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 =3D REFRESHRATE; module_param(refreshrate, uint, 0); =20 +static u_int contrast =3D 127; +module_param(contrast, uint, S_IRUGO); + struct ssd1307fb_par; =20 struct ssd1307fb_deviceinfo { @@ -525,7 +528,7 @@ static int ssd1307fb_probe(struct i2c_client *client, par->com_lrremap =3D of_property_read_bool(node, "solomon,com-lrremap"); par->com_invdir =3D of_property_read_bool(node, "solomon,com-invdir"); =20 - par->contrast =3D 127; + par->contrast =3D contrast; par->vcomh =3D par->device_info->default_vcomh; =20 /* Setup display timing */ --=20 2.3.0