From: Bartosz Golaszewski bgolaszewski@baylibre.com
While working on my other series related to gpio-backlight[1] I noticed that we could simplify the driver if we made the only user of platform data use GPIO lookups and device properties. This series tries to do that.
First two patches contain minor fixes. Third patch makes the driver explicitly drive the GPIO line. Fourth patch adds all necessary data structures to ecovec24. Patch 5/9 unifies much of the code for both pdata and non-pdata cases. Patches 6-7/9 remove unused platform data fields. Last two patches contain additional improvements for the GPIO backlight driver while we're already modifying it.
I don't have access to this HW but hopefully this works. Only compile tested.
[1] https://lkml.org/lkml/2019/6/25/900
v1 -> v2: - rebased on top of v5.3-rc1 and adjusted to the recent changes from Andy - added additional two patches with minor improvements
v2 -> v3: - in patch 7/7: used initializers to set values for pdata and dev local vars
v3 -> v4: - rebased on top of v5.4-rc1 - removed changes that are no longer relevant after commit ec665b756e6f ("backlight: gpio-backlight: Correct initial power state handling") - added patch 7/7
v4 -> v5: - in patch 7/7: added a comment replacing the name of the function being pulled into probe()
v5 -> v6: - added a patch making the driver explicitly set the direction of the GPIO to output - added a patch removing a redundant newline
Bartosz Golaszewski (9): backlight: gpio: remove unneeded include backlight: gpio: remove stray newline backlight: gpio: explicitly set the direction of the GPIO sh: ecovec24: add additional properties to the backlight device backlight: gpio: simplify the platform data handling sh: ecovec24: don't set unused fields in platform data backlight: gpio: remove unused fields from platform data backlight: gpio: use a helper variable for &pdev->dev backlight: gpio: pull gpio_backlight_initial_power_state() into probe
arch/sh/boards/mach-ecovec24/setup.c | 33 +++-- drivers/video/backlight/gpio_backlight.c | 128 +++++++------------ include/linux/platform_data/gpio_backlight.h | 3 - 3 files changed, 69 insertions(+), 95 deletions(-)