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authorTero Kristo <t-kristo@ti.com>2019-08-07 15:46:04 +0300
committerTony Lindgren <tony@atomide.com>2019-08-13 14:32:09 +0300
commit4345f0dc015da045a775655e6afac66dbaa1f62d (patch)
tree18012e79a3126019ca7e0ec08bed86624ce6b2ab /drivers/bus
parentb6036314436b9f4d8dbb8f1bdea511982de73cf9 (diff)
downloadlinux-4345f0dc015da045a775655e6afac66dbaa1f62d.tar.xz
bus: ti-sysc: rework the reset handling
If reset controllers are assigned to the ti-sysc target-module, only ti-sysc is going to be able to control these. Thus, remove all the disable_on_idle flag usage, and assert/de-assert the reset always in the idle path. Otherwise the reset signal will always just be de-asserted. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/bus')
-rw-r--r--drivers/bus/ti-sysc.c25
1 files changed, 5 insertions, 20 deletions
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index d7f6b04f13fd..6d34ccb914e0 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -94,7 +94,6 @@ struct sysc {
unsigned int enabled:1;
unsigned int needs_resume:1;
unsigned int child_needs_resume:1;
- unsigned int disable_on_idle:1;
struct delayed_work idle_work;
void (*clk_enable_quirk)(struct sysc *sysc);
void (*clk_disable_quirk)(struct sysc *sysc);
@@ -1030,8 +1029,7 @@ static int __maybe_unused sysc_runtime_suspend_legacy(struct device *dev,
dev_err(dev, "%s: could not idle: %i\n",
__func__, error);
- if (ddata->disable_on_idle)
- reset_control_assert(ddata->rsts);
+ reset_control_assert(ddata->rsts);
return 0;
}
@@ -1042,8 +1040,7 @@ static int __maybe_unused sysc_runtime_resume_legacy(struct device *dev,
struct ti_sysc_platform_data *pdata;
int error;
- if (ddata->disable_on_idle)
- reset_control_deassert(ddata->rsts);
+ reset_control_deassert(ddata->rsts);
pdata = dev_get_platdata(ddata->dev);
if (!pdata)
@@ -1090,8 +1087,7 @@ static int __maybe_unused sysc_runtime_suspend(struct device *dev)
ddata->enabled = false;
err_allow_idle:
- if (ddata->disable_on_idle)
- reset_control_assert(ddata->rsts);
+ reset_control_assert(ddata->rsts);
sysc_clkdm_allow_idle(ddata);
@@ -1111,8 +1107,7 @@ static int __maybe_unused sysc_runtime_resume(struct device *dev)
sysc_clkdm_deny_idle(ddata);
- if (ddata->disable_on_idle)
- reset_control_deassert(ddata->rsts);
+ reset_control_deassert(ddata->rsts);
if (sysc_opt_clks_needed(ddata)) {
error = sysc_enable_opt_clocks(ddata);
@@ -1543,14 +1538,7 @@ static int sysc_rstctrl_reset_deassert(struct sysc *ddata, bool reset)
return error;
}
- error = reset_control_deassert(ddata->rsts);
- if (error == -EEXIST)
- return 0;
-
- error = readx_poll_timeout(reset_control_status, ddata->rsts, val,
- val == 0, 100, MAX_MODULE_SOFTRESET_WAIT);
-
- return error;
+ return reset_control_deassert(ddata->rsts);
}
/*
@@ -2446,9 +2434,6 @@ static int sysc_probe(struct platform_device *pdev)
pm_runtime_put(&pdev->dev);
}
- if (!of_get_available_child_count(ddata->dev->of_node))
- ddata->disable_on_idle = true;
-
return 0;
err: