linux.git/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c, branch v4.18

drm/tinydrm: Make fb_dirty into a lower level hook

2018-03-28T16:19:32+00:00

mipi_dbi_enable_flush() wants to call the fb->dirty() hook from the
bowels of the .atomic_enable() hook. That prevents us from taking the
plane mutex in fb->dirty() unless we also plumb down the acquire
context.

Instead it seems simpler to split the fb->dirty() into a tinydrm
specific lower level hook that can be called from
mipi_dbi_enable_flush() and from a generic higher level
tinydrm_fb_dirty() helper. As we don't have a tinydrm specific
vfuncs table we'll just stick it into tinydrm_device directly
for now.

v2: Deal with the fb->dirty() in tinydrm_display_pipe_update() as well (Noralf)

Cc: "Noralf Trønnes" 
Cc: David Lechner 
Signed-off-by: Ville Syrjälä 
Reviewed-by: Noralf Trønnes 
Link: https://patchwork.freedesktop.org/patch/msgid/20180323153509.15287-1-ville.syrjala@linux.intel.com
Reviewed-by: Noralf Trønnes 
Tested-by: Noralf Trønnes

drm/tinydrm: Replace tinydrm_of_find_backlight with of_find_backlight

2018-02-20T16:07:22+00:00

Remove tinydrm_of_find_backlight from tinydrm-helpers.c. We now have
a generic of_find_backlight defined in backlight.c. Let the callers
of tinydrm_of_find_backlight call of_find_backlight. Also, remove
select BACKLIGHT_LCD_SUPPORT and select BACKLIGHT_CLASS_DEVICE from
tinydrm/Kconfig as it is a hack that is no longer needed.

Reviewed-by: Noralf Trønnes 
Reviewed-by: Sean Paul 
Signed-off-by: Meghana Madhyastha 
Signed-off-by: Sean Paul 
Link: https://patchwork.freedesktop.org/patch/msgid/11dd1cabd098a730d07ab04c5987b139d14d8b21.1516810725.git.meghana.madhyastha@gmail.com

drm/tinydrm: Convert tinydrm_enable/disable_backlight to backlight_enable/disable

2018-02-20T16:07:22+00:00

Remove tinydrm_enable/disable_backlight and let the callers call the
more generic backlight_enable/disable helpers

Reviewed-by: Noralf Trønnes 
Reviewed-by: Sean Paul 
Signed-off-by: Meghana Madhyastha 
Signed-off-by: Sean Paul 
Link: https://patchwork.freedesktop.org/patch/msgid/ec700724e47814e6426966e093bd32b2364ba147.1516810725.git.meghana.madhyastha@gmail.com

drm/tinydrm: Replace list_for_each with list_for_each_entry

2017-10-21T14:28:41+00:00

Replace use of list_for_each with list_for_each_entry to simplify the
code and remove variables that are used only in list_for_each.
Done with following coccinelle patch:

@r@
identifier fn,i,f,p;
expression e;
iterator name list_for_each, list_for_each_entry;
type T;
@@

fn(...) {
++ T *i;
  <+...
- list_for_each(p,e)
+ list_for_each_entry(i,e,f)
  {
              ...
-   T *i = list_entry(p,T,f);
                  ...
   }
   ...+>
}

@@
identifier r.fn,r.p;
@@

fn(...) {
  ...
- struct list_head *p;
  ... when != p
}

@@
identifier r.fn,r.i,r.f;
expression r.e;
statement S;
@@

fn(...) {
  <...
  list_for_each_entry(i,e,f)
- {
  S
- }
  ...>
}

@s@
identifier i,f,p;
expression e;
type T;
@@

- list_for_each(p,e)
+ list_for_each_entry(i,e,f)
  {
    ... when != T *i;
-   i = list_entry(p,T,f);
    ...
  }

@@
identifier s.p;
@@

- struct list_head *p;
  ... when != p

@@
identifier s.i,s.f;
expression s.e;
statement S;
@@

  list_for_each_entry(i,e,f)
- {
  S
- }

Signed-off-by: Harsha Sharma 
Reviewed-by: Sean Paul 
Signed-off-by: Noralf Trønnes 
Link: https://patchwork.freedesktop.org/patch/msgid/20171014202823.29230-1-harshasharmaiitr@gmail.com

drm/tinydrm: Generalize tinydrm_xrgb8888_to_gray8()

2017-08-09T15:55:50+00:00

This adds parameters for vaddr and clip to tinydrm_xrgb8888_to_gray8() to
make it more generic.

dma_buf_{begin,end}_cpu_access() are moved out to the repaper driver.

Return type is change to void to simplify error handling by callers.

Signed-off-by: David Lechner 
Signed-off-by: Noralf Trønnes 
Link: https://patchwork.freedesktop.org/patch/msgid/1502127581-10517-2-git-send-email-david@lechnology.com

drm/tinydrm: Add tinydrm_xrgb8888_to_gray8() helper

2017-07-14T17:29:59+00:00

Drm has no monochrome or greyscale support so add a conversion
from the common format XR24.

Also reorder includes into the common order.

Acked-by: Daniel Vetter 
Signed-off-by: Noralf Trønnes 
Link: http://patchwork.freedesktop.org/patch/msgid/1496934875-51984-4-git-send-email-noralf@tronnes.org

drm/tinydrm: fix semicolon.cocci warnings

2017-02-26T21:55:41+00:00

drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c:454:2-3: Unneeded semicolon

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Signed-off-by: Fengguang Wu 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/20170223164647.GA2519@lkp-ws02

drm/tinydrm: Add helper functions

2017-02-18T17:04:59+00:00

Add common functionality needed by many tinydrm drivers.

Signed-off-by: Noralf Trønnes 
Acked-by: Daniel Vetter 
Acked-by: Thierry Reding