From: "Thomas Niederprüm" <niederp@physik.uni-kl.de>
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,
"Thomas Niederprüm" <niederp@physik.uni-kl.de>
Subject: [PATCHv5 07/11] fbdev: ssd1307fb: Add a module parameter to set the refresh rate
Date: Tue, 24 Mar 2015 22:23:54 +0100 [thread overview]
Message-ID: <1427232238-21099-8-git-send-email-niederp@physik.uni-kl.de> (raw)
In-Reply-To: <1427232238-21099-1-git-send-email-niederp@physik.uni-kl.de>
This patch adds the module parameter "refreshrate" to set delay for the
deferred io. The refresh rate is given in units of Hertz. The default
refresh rate is 1 Hz. The refresh rate set through the newly introduced
parameter applies to all instances of the driver and for now it is not
possible to change it individually.
Signed-off-by: Thomas Niederprüm <niederp@physik.uni-kl.de>
---
drivers/video/fbdev/ssd1307fb.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index 284c527..b38973e 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -38,6 +38,11 @@
#define SSD1307FB_SET_COM_PINS_CONFIG 0xda
#define SSD1307FB_SET_VCOMH 0xdb
+#define REFRESHRATE 1
+
+static u_int refreshrate = REFRESHRATE;
+module_param(refreshrate, uint, 0);
+
struct ssd1307fb_par;
struct ssd1307fb_deviceinfo {
@@ -263,11 +268,6 @@ static void ssd1307fb_deferred_io(struct fb_info *info,
ssd1307fb_update_display(info->par);
}
-static struct fb_deferred_io ssd1307fb_defio = {
- .delay = HZ,
- .deferred_io = ssd1307fb_deferred_io,
-};
-
static int ssd1307fb_init(struct ssd1307fb_par *par)
{
int ret;
@@ -471,6 +471,7 @@ static int ssd1307fb_probe(struct i2c_client *client,
{
struct fb_info *info;
struct device_node *node = client->dev.of_node;
+ struct fb_deferred_io *ssd1307fb_defio;
u32 vmem_size;
struct ssd1307fb_par *par;
u8 *vmem;
@@ -541,10 +542,20 @@ static int ssd1307fb_probe(struct i2c_client *client,
goto fb_alloc_error;
}
+ ssd1307fb_defio = devm_kzalloc(&client->dev, sizeof(struct fb_deferred_io), GFP_KERNEL);
+ if (!ssd1307fb_defio) {
+ dev_err(&client->dev, "Couldn't allocate deferred io.\n");
+ ret = -ENOMEM;
+ goto fb_alloc_error;
+ }
+
+ ssd1307fb_defio->delay = HZ / refreshrate;
+ ssd1307fb_defio->deferred_io = ssd1307fb_deferred_io;
+
info->fbops = &ssd1307fb_ops;
info->fix = ssd1307fb_fix;
info->fix.line_length = par->width / 8;
- info->fbdefio = &ssd1307fb_defio;
+ info->fbdefio = ssd1307fb_defio;
info->var = ssd1307fb_var;
info->var.xres = par->width;
--
2.3.0
next prev parent reply other threads:[~2015-03-24 21:21 UTC|newest]
Thread overview: 138+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-06 22:28 [PATCH 0/8] Cleanup and add support for SSD1305 niederp
2015-02-06 22:28 ` [PATCH 1/8] Documentation: dts: add missing Solomon Systech vendor prefix niederp
2015-02-06 22:28 ` [PATCH 2/8] fbdev: ssd1307fb: Unify init code and make controller configurable from device tree niederp
2015-02-07 10:42 ` Maxime Ripard
2015-02-07 14:59 ` Thomas Niederprüm
2015-02-07 15:19 ` Noralf Trønnes
2015-02-09 10:37 ` Thomas Niederprüm
2015-02-12 16:58 ` Maxime Ripard
2015-02-12 16:41 ` Maxime Ripard
2015-02-14 16:12 ` Thomas Niederprüm
2015-02-23 9:43 ` Maxime Ripard
2015-02-06 22:28 ` [PATCH 3/8] fbdev: ssd1307fb: Add support for SSD1305 niederp
2015-02-06 22:28 ` [PATCH 4/8] fbdev: ssd1307fb: Use vmalloc to allocate video memory niederp
2015-02-07 11:18 ` Maxime Ripard
2015-02-07 15:35 ` Thomas Niederprüm
2015-02-12 15:11 ` Maxime Ripard
2015-02-14 14:22 ` Thomas Niederprüm
2015-02-14 15:36 ` Maxime Ripard
2015-03-10 11:28 ` Tomi Valkeinen
2015-03-13 21:31 ` Thomas Niederprüm
2015-03-14 22:02 ` Geert Uytterhoeven
2015-03-20 11:37 ` Tomi Valkeinen
2015-03-20 12:12 ` Geert Uytterhoeven
2015-03-20 14:47 ` Maxime Ripard
2015-03-20 15:24 ` Geert Uytterhoeven
2015-03-20 20:27 ` Thomas Niederprüm
2015-03-20 15:25 ` Tomi Valkeinen
2015-03-20 20:36 ` Thomas Niederprüm
2015-02-06 22:28 ` [PATCH 5/8] fbdev: ssd1307fb: Add module parameter bitsperpixel niederp
2015-02-07 11:20 ` Maxime Ripard
2015-02-07 16:05 ` Thomas Niederprüm
2015-02-14 15:54 ` Maxime Ripard
2015-03-10 10:45 ` Tomi Valkeinen
2015-03-13 19:25 ` Thomas Niederprüm
2015-03-25 10:56 ` Olliver Schinagl
2015-03-25 16:02 ` Maxime Ripard
2015-02-06 22:28 ` [PATCH 6/8] fbdev: ssd1307fb: Add module parameter to set update delay of the deffered io niederp
2015-02-07 11:26 ` Maxime Ripard
2015-02-07 16:12 ` Thomas Niederprüm
2015-02-09 9:03 ` Maxime Ripard
2015-02-06 22:28 ` [PATCH 7/8] fbdev: ssd1307fb: Add sysfs handles to expose contrast and dim setting to userspace niederp
2015-02-07 11:43 ` Maxime Ripard
2015-02-07 16:42 ` Thomas Niederprüm
2015-02-09 8:52 ` Maxime Ripard
2015-03-10 10:49 ` Tomi Valkeinen
2015-03-13 19:21 ` Thomas Niederprüm
2015-02-06 22:28 ` [PATCH 8/8] fbdev: ssd1307fb: Turn off display on driver unload niederp
2015-02-07 11:45 ` Maxime Ripard
2015-02-07 16:49 ` Thomas Niederprüm
2015-03-01 22:27 ` [PATCHv2 00/10] fbdev: ssd1307fb: Cleanup and add support for SSD1305 Thomas Niederprüm
2015-03-01 22:27 ` [PATCHv2 01/10] fbdev: ssd1307fb: fix memory address smem_start Thomas Niederprüm
2015-03-03 7:17 ` Maxime Ripard
2015-03-01 22:27 ` [PATCHv2 02/10] fbdev: ssd1307fb: Use vmalloc to allocate video memory Thomas Niederprüm
2015-03-03 8:52 ` Maxime Ripard
2015-03-03 19:04 ` Thomas Niederprüm
2015-03-01 22:27 ` [PATCHv2 03/10] Documentation: dts: add missing Solomon Systech vendor prefix Thomas Niederprüm
2015-03-01 22:27 ` [PATCHv2 04/10] fbdev: ssd1307fb: Unify init code and obtain hw specific bits from DT Thomas Niederprüm
2015-03-05 21:49 ` Maxime Ripard
2015-03-01 22:27 ` [PATCHv2 05/10] fbdev: ssd1307fb: fix in tree users of ssd1306 Thomas Niederprüm
2015-03-03 9:31 ` Maxime Ripard
2015-03-01 22:27 ` [PATCHv2 06/10] fbdev: ssd1307fb: Add support for SSD1305 Thomas Niederprüm
2015-03-01 22:28 ` [PATCHv2 07/10] fbdev: ssd1307fb: Add module parameter to set refresh rate of the display Thomas Niederprüm
2015-03-05 22:12 ` Maxime Ripard
2015-03-01 22:28 ` [PATCHv2 08/10] fbdev: ssd1307fb: Add module parameter bitsperpixel Thomas Niederprüm
2015-03-01 22:28 ` [PATCHv2 09/10] fbdev: ssd1307fb: Add sysfs handles to expose contrast and dim setting to userspace Thomas Niederprüm
2015-03-01 22:28 ` [PATCHv2 10/10] fbdev: ssd1307fb: Turn off display on driver unload Thomas Niederprüm
2015-03-03 9:40 ` Maxime Ripard
2015-03-09 22:22 ` [PATCHv3 00/10] fbdev: ssd1307fb: Cleanup and add support for SSD1305 Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 01/10] fbdev: ssd1307fb: fix memory address smem_start Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 02/10] fbdev: ssd1307fb: Use vmalloc to allocate video memory Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 03/10] of: Add Solomon Systech vendor prefix Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 04/10] fbdev: ssd1307fb: Unify init code and obtain hw specific bits from DT Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 05/10] ARM: mxs: fix in tree users of ssd1306 Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 06/10] fbdev: ssd1307fb: Add support for SSD1305 Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 07/10] fbdev: ssd1307fb: Add module parameter to set refresh rate of the display Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 08/10] fbdev: ssd1307fb: Add module parameter bitsperpixel Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 09/10] fbdev: ssd1307fb: Add sysfs handles to expose contrast and dim setting to userspace Thomas Niederprüm
2015-03-09 22:22 ` [PATCHv3 10/10] fbdev: ssd1307fb: Turn off display on driver unload Thomas Niederprüm
2015-03-16 17:11 ` [PATCHv4 00/10] Cleanup and add support for SSD1305 Thomas Niederprüm
2015-03-16 17:11 ` [PATCHv4 01/10] fbdev: ssd1307fb: fix memory address smem_start Thomas Niederprüm
2015-03-16 17:11 ` [PATCHv4 02/10] fbdev: ssd1307fb: Allocate page aligned video memory Thomas Niederprüm
2015-03-18 17:38 ` Maxime Ripard
2015-03-16 17:11 ` [PATCHv4 03/10] of: Add Solomon Systech vendor prefix Thomas Niederprüm
2015-03-16 17:11 ` [PATCHv4 04/10] fbdev: ssd1307fb: Unify init code and obtain hw specific bits from DT Thomas Niederprüm
2015-03-18 19:27 ` Maxime Ripard
2015-03-20 21:12 ` Thomas Niederprüm
2015-03-24 15:24 ` Maxime Ripard
2015-03-16 17:11 ` [PATCHv4 05/10] ARM: mxs: fix in tree users of ssd1306 Thomas Niederprüm
2015-03-16 17:11 ` [PATCHv4 06/10] fbdev: ssd1307fb: Add support for SSD1305 Thomas Niederprüm
2015-03-16 17:11 ` [PATCHv4 07/10] fbdev: ssd1307fb: Add a module parameter to set the refresh rate Thomas Niederprüm
2015-03-19 13:18 ` Maxime Ripard
2015-03-20 21:16 ` Thomas Niederprüm
2015-03-16 17:11 ` [PATCHv4 08/10] fbdev: ssd1307fb: Turn off display on driver unload Thomas Niederprüm
2015-03-16 17:11 ` [PATCHv4 09/10] fbdev: ssd1307fb: add backlight controls for setting the contrast Thomas Niederprüm
2015-03-19 13:22 ` Maxime Ripard
2015-03-16 17:11 ` [PATCHv4 10/10] fbdev: ssd1307fb: Add blank mode Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 00/11] Cleanup and add support for SSD1305 Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 01/11] fbdev: ssd1307fb: fix memory address smem_start Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 02/11] fbdev: ssd1307fb: Allocate page aligned video memory Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 03/11] of: Add Solomon Systech vendor prefix Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 04/11] fbdev: ssd1307fb: Unify init code and obtain hw specific bits from DT Thomas Niederprüm
2015-03-24 22:14 ` Maxime Ripard
2015-03-25 20:03 ` Thomas Niederprüm
2015-03-25 15:49 ` Olliver Schinagl
2015-03-25 22:14 ` Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 05/11] ARM: mxs: fix in tree users of ssd1306 Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 06/11] fbdev: ssd1307fb: Add support for SSD1305 Thomas Niederprüm
2015-03-24 21:23 ` Thomas Niederprüm [this message]
2015-03-24 21:54 ` [PATCHv5 07/11] fbdev: ssd1307fb: Add a module parameter to set the refresh rate Maxime Ripard
2015-03-24 21:23 ` [PATCHv5 08/11] fbdev: ssd1307fb: Turn off display on driver unload Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 09/11] fbdev: ssd1307fb: Add module parameter to set the initial contrast Thomas Niederprüm
2015-03-24 22:16 ` Maxime Ripard
2015-03-25 20:10 ` Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 10/11] fbdev: ssd1307fb: add backlight controls for setting the contrast Thomas Niederprüm
2015-03-24 21:23 ` [PATCHv5 11/11] fbdev: ssd1307fb: Add blank mode Thomas Niederprüm
2015-03-25 15:50 ` Olliver Schinagl
2015-03-25 20:33 ` Thomas Niederprüm
2015-03-25 22:00 ` Maxime Ripard
2015-03-31 18:27 ` [PATCHv6 00/10] Cleanup and add support for SSD1305 Thomas Niederprüm
2015-03-31 18:27 ` [PATCHv6 01/10] fbdev: ssd1307fb: fix memory address smem_start Thomas Niederprüm
2015-03-31 18:27 ` [PATCHv6 02/10] fbdev: ssd1307fb: Allocate page aligned video memory Thomas Niederprüm
2015-03-31 18:27 ` [PATCHv6 03/10] of: Add Solomon Systech vendor prefix Thomas Niederprüm
2015-04-01 20:33 ` Rob Herring
2015-03-31 18:27 ` [PATCHv6 04/10] fbdev: ssd1307fb: Unify init code and obtain hw specific bits from DT Thomas Niederprüm
2015-04-01 16:00 ` Maxime Ripard
2015-03-31 18:27 ` [PATCHv6 05/10] ARM: mxs: fix in tree users of ssd1306 Thomas Niederprüm
2015-05-07 10:55 ` Tomi Valkeinen
2015-05-07 11:28 ` Shawn Guo
2015-05-08 13:31 ` Maxime Ripard
2015-05-26 7:08 ` Tomi Valkeinen
2015-05-27 3:03 ` Shawn Guo
2015-03-31 18:27 ` [PATCHv6 06/10] fbdev: ssd1307fb: Add support for SSD1305 Thomas Niederprüm
2015-04-01 16:01 ` Maxime Ripard
2015-03-31 18:27 ` [PATCHv6 07/10] fbdev: ssd1307fb: Add a module parameter to set the refresh rate Thomas Niederprüm
2015-03-31 18:27 ` [PATCHv6 08/10] fbdev: ssd1307fb: Turn off display on driver unload Thomas Niederprüm
2015-03-31 18:27 ` [PATCHv6 09/10] fbdev: ssd1307fb: add backlight controls for setting the contrast Thomas Niederprüm
2015-03-31 18:27 ` [PATCHv6 10/10] fbdev: ssd1307fb: Add blank mode Thomas Niederprüm
2015-05-27 10:15 ` [PATCHv6 00/10] Cleanup and add support for SSD1305 Tomi Valkeinen
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