[PATCH 2/9] AUO-K190x: add runtime-pm calls to controller init functions
From: Heiko Stübner <heiko@sntech.de>
Date: 2013-03-22 14:13:37
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
The controller init may be called from a context where the device is runtime suspended, leading to a deadlock, as the controllers only accepts the wakeup command when suspended. Signed-off-by: Heiko Stübner <heiko@sntech.de> --- drivers/video/auo_k1900fb.c | 6 ++++++ drivers/video/auo_k1901fb.c | 6 ++++++ 2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/video/auo_k1900fb.c b/drivers/video/auo_k1900fb.c
index b02fab5d..8cf4847 100644
--- a/drivers/video/auo_k1900fb.c
+++ b/drivers/video/auo_k1900fb.c@@ -60,9 +60,12 @@ static void auok1900_init(struct auok190xfb_par *par) { + struct device *dev = par->info->device; struct auok190x_board *board = par->board; u16 init_param = 0; + pm_runtime_get_sync(dev); + init_param |= AUOK1900_INIT_TEMP_AVERAGE; init_param |= AUOK1900_INIT_ROTATE(par->rotation); init_param |= AUOK190X_INIT_INVERSE_WHITE;
@@ -74,6 +77,9 @@ static void auok1900_init(struct auok190xfb_par *par) /* let the controller finish */ board->wait_for_rdy(par); + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); } static void auok1900_update_region(struct auok190xfb_par *par, int mode,
diff --git a/drivers/video/auo_k1901fb.c b/drivers/video/auo_k1901fb.c
index ece99b8..98aa222 100644
--- a/drivers/video/auo_k1901fb.c
+++ b/drivers/video/auo_k1901fb.c@@ -101,9 +101,12 @@ static void auok1901_init(struct auok190xfb_par *par) { + struct device *dev = par->info->device; struct auok190x_board *board = par->board; u16 init_param = 0; + pm_runtime_get_sync(dev); + init_param |= AUOK190X_INIT_INVERSE_WHITE; init_param |= AUOK190X_INIT_FORMAT0; init_param |= AUOK1901_INIT_RESOLUTION(par->resolution);
@@ -113,6 +116,9 @@ static void auok1901_init(struct auok190xfb_par *par) /* let the controller finish */ board->wait_for_rdy(par); + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); } static void auok1901_update_region(struct auok190xfb_par *par, int mode,
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1.7.2.3