openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/sun4i: backend: Create regmap after access is possible 

The backend has various clocks and reset controls that need to be
enabled and deasserted before register access is possible.

Move the creation of the regmap to after the clocks and reset controls
have been configured where it makes more sense.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171014040252.9621-3-wens@csie.org
This commit is contained in:
Chen-Yu Tsai 2017-10-14 12:02:47 +08:00 committed by Maxime Ripard
parent e8afb7b67f
commit 8270249fbe
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/sun4i/sun4i_backend.c
View File

@ -369,13 +369,6 @@ static int sun4i_backend_bind(struct device *dev, struct device *master,
if (IS_ERR(regs)) if (IS_ERR(regs))
return PTR_ERR(regs); return PTR_ERR(regs);
backend->engine.regs = devm_regmap_init_mmio(dev, regs,
&sun4i_backend_regmap_config);
if (IS_ERR(backend->engine.regs)) {
dev_err(dev, "Couldn't create the backend regmap\n");
return PTR_ERR(backend->engine.regs);
}
backend->reset = devm_reset_control_get(dev, NULL); backend->reset = devm_reset_control_get(dev, NULL);
if (IS_ERR(backend->reset)) { if (IS_ERR(backend->reset)) {
dev_err(dev, "Couldn't get our reset line\n"); dev_err(dev, "Couldn't get our reset line\n");
@ -421,6 +414,13 @@ static int sun4i_backend_bind(struct device *dev, struct device *master,
} }
} }
backend->engine.regs = devm_regmap_init_mmio(dev, regs,
&sun4i_backend_regmap_config);
if (IS_ERR(backend->engine.regs)) {
dev_err(dev, "Couldn't create the backend regmap\n");
return PTR_ERR(backend->engine.regs);
}
list_add_tail(&backend->engine.list, &drv->engine_list); list_add_tail(&backend->engine.list, &drv->engine_list);
/* Reset the registers */ /* Reset the registers */