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path: root/drivers/staging/fbtft/fb_ssd1331.c
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* Staging: fbtft: Fix GPIO handlingJan Sebastian Götte2019-07-251-2/+2
| | | | | | | | | | | | | | | Commit c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor interface") breaks GPIO handling. In several places, checks to only set a GPIO if it was configured ended up backwards. I have tested this fix. The fixed driver works with a ili9486 display connected to a raspberry pi via SPI. Fixes: c440eee1a7a1d ("Staging: fbtft: Switch to the gpio descriptor interface") Tested-by: Jan Sebastian Götte <linux@jaseg.net> Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Signed-off-by: Jan Sebastian Götte <linux@jaseg.net> Link: https://lore.kernel.org/r/75ada52f-afa1-08bc-d0ce-966fc1110e70@jaseg.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging: fbtft: line over 80 charactersBhagyashri Dighole2019-03-181-1/+2
| | | | | | | | Fix the checkpatch.pl warning WARNING: line over 80 characters Signed-off-by: Bhagyashri Dighole <digholebhagyashri@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Staging: fbtft: Switch to the gpio descriptor interfaceNishad Kamdar2019-01-181-5/+5
| | | | | | | | | | | | | | | | This switches the fbtft driver to use GPIO descriptors rather than numerical gpios: Utilize the GPIO library's intrinsic handling of OF GPIOs and polarity. If the line is flagged active low, gpiolib will deal with this. Remove gpios from platform device structure. Neither assign statically numbers to gpios in platform device nor allow gpios to be parsed as module parameters. Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging: fbtft: Erases some repetitive usage of function name - StyleLeonardo Brás2018-08-081-1/+1
| | | | | | | Changes this functions to avoid using "blank" on debug twice. Improves log readability. Signed-off-by: Leonardo Brás <leobras.c@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging: fbtft: add SPDX identifiersGreg Kroah-Hartman2018-01-151-0/+1
| | | | | | | | | | | | | | | | | | | It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Fix up the all of the staging fbtft drivers to have a proper SPDX identifier, based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging: fbtft: fb_ssd1331: fix mirrored displayJohannes H. Jensen2017-11-061-1/+7
| | | | | | | | | | | | | | When the row scan order is reversed (the default) we also need to reverse the column scan order. This was not done previously, resulting in a mirrored display. Also add support for 180 degree display rotation, in which case simply disable reversed row and column scan order. Tested on an Adafruit 0.96" mini Color OLED display. Signed-off-by: Johannes H. Jensen <joh@pseudoberries.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging/fbtft: Hush checkpatch.pl warning about unnecessary line continuationsAlexander Kapshuk2017-03-091-4/+4
| | | | | | | | | Use a single string literal as the fmt argument passed to dev_err() instead of multiple string literals split with an embedded backslash character. Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging: fbtft: fix unaligned parenthesesUmang Raghuvanshi2017-02-051-9/+11
| | | | | | | | Fix the following formatting issues: CHECK: Alignment should match open parenthesis Signed-off-by: Umang Raghuvanshi <u@umangis.me> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging: fbtft: change 'gamma' array to u32Arnd Bergmann2017-02-031-1/+1
| | | | | | | | | | | | | | | | Having a local variable of 1024 bytes on 64-bit architectures is a bit too much, and I ran into this warning while trying to see what functions use the largest stack: drivers/staging/fbtft/fbtft-sysfs.c: In function 'store_gamma_curve': drivers/staging/fbtft/fbtft-sysfs.c:132:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] As there is no need for 64-bit gamma values (on 32-bit architectures, we don't use those either), I'm changing the type from 'unsigned long' to 'u32' here, which cuts the required space in half everywhere. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging: fbtft: fb_ssd1331: Fix checkpatch warningAnson Jacob2016-09-011-20/+20
| | | | | | | | Fix checkpatch.pl warning: Block comments use * on subsequent lines Signed-off-by: Anson Jacob <ansonjacob.aj@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Staging: fbtft: fb_ssd1331: Remove unnecessary castShivani Bhardwaj2015-10-161-1/+1
| | | | | | | | | | | | | | | | | Compiler can typecast variables implicitly so, explicit type cast is not required and should be removed. Semantic patch used: @@ type T; T e; identifier x; @@ * T x = (T)e; Signed-off-by: Shivani Bhardwaj <shivanib134@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Staging: fbtft: Remove debug messagesShraddha Barke2015-09-211-4/+0
| | | | | | | | Remove debug messages related to fbtft_par_dbg(DEBUG_INIT_DISPLAY.. ) as this info can be obtained using kernel function tracer Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging/fbtft : Fix multiple/missing blank line issuesAnish Bhatt2015-09-121-2/+0
| | | | | | | Remove or add blank lines as recommended by checkpatch.pl Signed-off-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging/fbtft : Remove repeated set_addr_win debug messagesAnish Bhatt2015-09-121-3/+0
| | | | | | | | | | fbtft_par_dbg(DEBUG_SET_ADDR_WIN.. ) is repeated in every set_addr_win() handler, this could be replicated by using the kernel function tracer instead. Signed-off-by: Anish Bhatt <anish@chelsio.com> Suggested-by: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Staging: fbtft: clean dev_err() loggingHaneen Mohammed2015-03-061-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes __func__ from dev_err. dev_err includes information about: (devcice, driver, specific instance of device, etc) in the log printout. This was done using Coccinelle, with the following semantic patch: @a@ expression E, R; expression msg; @@ dev_err(E, msg, __func__, R); @script:python b@ e << a.msg; y; @@ if(e.find("%s: ") == True): m = e.replace("%s: ", "", 1); coccinelle.y = m; elif(e.find("%s ") == True): m = e.replace("%s ", "", 1); coccinelle.y = m; elif(e.find("%s:") == True): m = e.replace("%s:", "", 1); coccinelle.y = m; else: m = e.replace("%s", "",1); coccinelle.y = m; @c@ expression a.E, a.msg, a.R; identifier b.y; @@ - dev_err(E, msg, __func__, R); + dev_err(E, y, R); Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Staging: fbtft: Convert comment from C99 style to C89 styleMelike Yurtoglu2015-02-261-15/+15
| | | | | | | | This patch fixes checkpatch.pl error ERROR: do not use C99 // comments Signed-off-by: Melike Yurtoglu <aysemelikeyurtoglu@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging: fbtft: fix braces {} are not necessary for single statement blocksAya Mahfouz2015-02-261-4/+2
| | | | | | | | This patch fixes the following checkpatch.pl warning: braces {} are not necessary for single statement blocks Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* staging: fbtft: add fb_ssd1331 driverThomas Petazzoni2015-01-171-0/+205
This commit adds the fb_ssd1331 driver from the fbtft project at https://github.com/notro/fbtft. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Noralf Tronnes <notro@tronnes.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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