kernel/drivers/video/backlight/tdo24m.c, branch linux-rolling-stable

backlight: lcd: Remove struct fb_videomode from set_mode callback

2024-09-30T15:49:42Z

Implementations of struct lcd_ops.set_mode only require the resolution from struct fb_videomode. Pass the xres and yres fields, but remove the dependency on the fbdev data structure. Signed-off-by: Thomas Zimmermann Reviewed-by: Daniel Thompson Link: https://lore.kernel.org/r/20240906075439.98476-28-tzimmermann@suse.de Signed-off-by: Lee Jones

backlight: tdo24m: Use lcd power constants

2024-09-30T15:49:42Z

Replace FB_BLANK_ constants with their counterparts from the lcd subsystem. The values are identical, so there's no change in functionality. Signed-off-by: Thomas Zimmermann Reviewed-by: Daniel Thompson Link: https://lore.kernel.org/r/20240906075439.98476-20-tzimmermann@suse.de Signed-off-by: Lee Jones

backlight: tdo24m: Constify lcd_ops

2024-05-03T09:45:31Z

'struct lcd_ops' is not modified by core backlight code, so it can be made const for increased code safety. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Daniel Thompson Link: https://lore.kernel.org/r/20240424-video-backlight-lcd-ops-v2-14-1aaa82b07bc6@kernel.org Signed-off-by: Lee Jones

spi: make remove callback a void function

2022-02-09T13:00:45Z

The value returned by an spi driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Signed-off-by: Uwe Kleine-König Acked-by: Marc Kleine-Budde Acked-by: Andy Shevchenko Reviewed-by: Geert Uytterhoeven Acked-by: Jérôme Pouiller Acked-by: Miquel Raynal Acked-by: Jonathan Cameron Acked-by: Claudius Heine Acked-by: Stefan Schmidt Acked-by: Alexandre Belloni Acked-by: Ulf Hansson # For MMC Acked-by: Marcus Folkesson Acked-by: Łukasz Stelmach Acked-by: Lee Jones Link: https://lore.kernel.org/r/20220123175201.34839-6-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 332

2019-06-05T15:37:06Z

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as publishhed by the free software foundation extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 48 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.292339952@linutronix.de Signed-off-by: Greg Kroah-Hartman

backlight: tdo24m: Fix the SPI CS between transfers

2018-01-08T09:21:57Z

Currently the LCD display (TD035S) on the cm-x300 platform is broken and remains blank. The TD0245S specification requires that the chipselect is toggled between commands sent to the panel. This was also the purpose of the former patch of commit f64dcac0b124 ("backlight: tdo24m: ensure chip select changes between transfers"). Unfortunately, the "cs_change" field of a SPI transfer is misleading. Its true meaning is that for a SPI message holding multiple transfers, the chip select is toggled between each transfer, but for the last transfer it remains asserted. In this driver, all the SPI messages contain exactly one transfer, which means that each transfer is the last of its message, and as a consequence the chip select is never toggled. Actually, there was a second bug hidding the first one, hence the problem was not seen until v4.6. This problem was fixed by commit a52db659c79c ("spi: pxa2xx: Fix cs_change management") for PXA based boards. This fix makes the TD035S work again on a cm-x300 board. The same applies to other PXA boards, ie. corgi and tosa. Fixes: a52db659c79c ("spi: pxa2xx: Fix cs_change management") Reported-by: Andrea Adami Signed-off-by: Robert Jarzmik Acked-by: Daniel Thompson Signed-off-by: Lee Jones

spi: Drop owner assignment from spi_drivers

2015-10-28T01:30:17Z

An spi_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Andrew F. Davis Acked-by: Jonathan Cameron Signed-off-by: Mark Brown

backlight: tdo24m: Add blank line after declarations

2014-08-29T07:26:12Z

Fixed the following checkpatch warning. WARNING: Missing a blank line after declarations Signed-off-by: Jingoo Han Signed-off-by: Lee Jones

backlight: tdo24m: use devm_lcd_device_register()

2013-11-13T03:09:20Z

Use devm_lcd_device_register() to make cleanup paths simpler. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

backlight: use dev_get_platdata()

2013-11-13T03:09:16Z

Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds