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path: root/drivers/auxdisplay/ks0108.c
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2021-10-22auxdisplay: ks0108: remove superfluous header filesMianhan Liu1-3/+0
ks0108.c doesn't use any macro or function declared in linux/fs.h, linux/io.h and linux/uaccess.h. Thus, these files can be removed from ks0108.c safely without affecting the compilation. Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn> [reworded] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2021-07-16auxdisplay: Replace symbolic permissions with octal permissionsJinchao Wang1-2/+2
Resolves the checkpatch warning. Signed-off-by: Jinchao Wang <wjc@cdjrlc.com> [edited wording] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2021-07-16auxdisplay: ks0108: Switch to use module_parport_driver()Andy Shevchenko1-13/+1
Switch to use module_parport_driver() to reduce boilerplate code. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2021-02-26treewide: Miguel has movedMiguel Ojeda1-2/+2
Update contact info. Link: https://lkml.kernel.org/r/20210206162524.GA11520@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-12auxdisplay: Replace licenses with SPDX identifiersMiguel Ojeda1-15/+1
Cc: Philippe Ombredanne <pombredanne@nexb.com> Acked-by: Willy Tarreau <w@1wt.eu> Acked-by: Linus Walleij <triad@dflund.se> Acked-by: Robin van der Gracht <robin@protonic.nl> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
2015-08-14auxdisplay: ks0108: initialize local parport variableSudip Mukherjee1-0/+2
The local variable ks0108_parport is used by other functions to write to the parallel port. We missed initializing it when we converted the driver to use new Parallel Port codes. Fixes: 4edd70c133f3 ("auxdisplay: ks0108: use new parport device model") Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-08-05auxdisplay: ks0108: use new parport device modelSudip Mukherjee1-29/+47
Modify auxdisplay driver to use the new parallel port device model. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-08-05auxdisplay: ks0108: use min_tSudip Mukherjee1-3/+5
Using min_t() is preffered than using min(). Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-08-05auxdisplay: ks0108: start using pr_*Sudip Mukherjee1-6/+6
Start using pr_* macros instead of using printk and in the process define pr_fmt. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-08-05auxdisplay: ks0108: fix refcountSudip Mukherjee1-0/+1
parport_find_base() will implicitly do parport_get_port() which increases the refcount. Then parport_register_device() will again increment the refcount. But while unloading the module we are only doing parport_unregister_device() decrementing the refcount only once. We add an parport_put_port() to neutralize the effect of parport_get_port(). Cc: <stable@vger.kernel.org> # 2.6.32+ Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2008-07-04Miguel Ojeda has movedMiguel Ojeda1-2/+2
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-20[PATCH] cfag12864b: fix crash when built-in and no parport presentMiguel Ojeda1-0/+12
The problem comes when ks0108/cfag12864b are built-in and no parallel port is present. ks0108_init() is called first, as it should be, but fails to load (as there is no parallel port to use). After that, cfag12864b_init() gets called, without knowing anything about ks0108 failed, and calls ks0108_writecontrol(), which dereferences an uninitialized pointer. Init order is OK, I think. The problem is how to stop cfag12864b_init() being called if ks0108 failed to load. modprobe does it for us, but, how when built-in? Signed-off-by: Miguel Ojeda Sandonis <maxextreme@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] drivers: add LCD supportMiguel Ojeda Sandonis1-0/+166
Add support for auxiliary displays, the ks0108 LCD controller, the cfag12864b LCD and adds a framebuffer device: cfag12864bfb. - Add a "auxdisplay/" folder in "drivers/" for auxiliary display drivers. - Add support for the ks0108 LCD Controller as a device driver. (uses parport interface) - Add support for the cfag12864b LCD as a device driver. (uses ks0108 LCD Controller driver) - Add a framebuffer device called cfag12864bfb. (uses cfag12864b LCD driver) - Add the usual Documentation, includes, Makefiles, Kconfigs, MAINTAINERS, CREDITS... - Miguel Ojeda will maintain all the stuff above. [rdunlap@xenotime.net: workqueue fixups] [akpm@osdl.org: kconfig fix] Signed-off-by: Miguel Ojeda Sandonis <maxextreme@gmail.com> Cc: Greg KH <greg@kroah.com> Acked-by: Paulo Marques <pmarques@grupopie.com> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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