redonkable/alistair23-linux
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usb: dwc3: of-simple: Convert to bulk clk API

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Now that the bulk API has a "get all of the clocks" helper to match
what this code wants, there's little reason not to switch over.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Robin Murphy 2019-03-27 19:24:06 +00:00 committed by Felipe Balbi
parent b4c53b4ac6
commit c0c61471ef
1 changed files with 17 additions and 78 deletions
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95
drivers/usb/dwc3/dwc3-of-simple.c
View file

@ -24,59 +24,13 @@
struct dwc3_of_simple {
struct device *dev;
struct clk **clks;
struct clk_bulk_data *clks;
int num_clocks;
struct reset_control *resets;
bool pulse_resets;
bool need_reset;
};
static int dwc3_of_simple_clk_init(struct dwc3_of_simple *simple, int count)
{
struct device *dev = simple->dev;
struct device_node *np = dev->of_node;
int i;
simple->num_clocks = count;
if (!count)
return 0;
simple->clks = devm_kcalloc(dev, simple->num_clocks,
sizeof(struct clk *), GFP_KERNEL);
if (!simple->clks)
return -ENOMEM;
for (i = 0; i < simple->num_clocks; i++) {
struct clk *clk;
int ret;
clk = of_clk_get(np, i);
if (IS_ERR(clk)) {
while (--i >= 0) {
clk_disable_unprepare(simple->clks[i]);
clk_put(simple->clks[i]);
}
return PTR_ERR(clk);
}
ret = clk_prepare_enable(clk);
if (ret < 0) {
while (--i >= 0) {
clk_disable_unprepare(simple->clks[i]);
clk_put(simple->clks[i]);
}
clk_put(clk);
return ret;
}
simple->clks[i] = clk;
}
return 0;
}
static int dwc3_of_simple_probe(struct platform_device *pdev)
{
struct dwc3_of_simple *simple;
@ -84,7 +38,6 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
struct device_node *np = dev->of_node;
int ret;
int i;
bool shared_resets = false;
simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL);
@ -124,20 +77,18 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
goto err_resetc_put;
}
ret = dwc3_of_simple_clk_init(simple, of_count_phandle_with_args(np,
"clocks", "#clock-cells"));
ret = clk_bulk_get_all(simple->dev, &simple->clks);
if (ret < 0)
goto err_resetc_assert;
simple->num_clocks = ret;
ret = clk_bulk_prepare_enable(simple->num_clocks, simple->clks);
if (ret)
goto err_resetc_assert;
ret = of_platform_populate(np, NULL, NULL, dev);
if (ret) {
for (i = 0; i < simple->num_clocks; i++) {
clk_disable_unprepare(simple->clks[i]);
clk_put(simple->clks[i]);
}
goto err_resetc_assert;
}
if (ret)
goto err_clk_put;
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
@ -145,6 +96,10 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
return 0;
err_clk_put:
clk_bulk_disable_unprepare(simple->num_clocks, simple->clks);
clk_bulk_put_all(simple->num_clocks, simple->clks);
err_resetc_assert:
if (!simple->pulse_resets)
reset_control_assert(simple->resets);
@ -158,14 +113,11 @@ static int dwc3_of_simple_remove(struct platform_device *pdev)
{
struct dwc3_of_simple *simple = platform_get_drvdata(pdev);
struct device *dev = &pdev->dev;
int i;
of_platform_depopulate(dev);
for (i = 0; i < simple->num_clocks; i++) {
clk_disable_unprepare(simple->clks[i]);
clk_put(simple->clks[i]);
}
clk_bulk_disable_unprepare(simple->num_clocks, simple->clks);
clk_bulk_put_all(simple->num_clocks, simple->clks);
simple->num_clocks = 0;
if (!simple->pulse_resets)
@ -183,10 +135,8 @@ static int dwc3_of_simple_remove(struct platform_device *pdev)
static int __maybe_unused dwc3_of_simple_runtime_suspend(struct device *dev)
{
struct dwc3_of_simple *simple = dev_get_drvdata(dev);
int i;
for (i = 0; i < simple->num_clocks; i++)
clk_disable(simple->clks[i]);
clk_bulk_disable(simple->num_clocks, simple->clks);
return 0;
}
@ -194,19 +144,8 @@ static int __maybe_unused dwc3_of_simple_runtime_suspend(struct device *dev)
static int __maybe_unused dwc3_of_simple_runtime_resume(struct device *dev)
{
struct dwc3_of_simple *simple = dev_get_drvdata(dev);
int ret;
int i;
for (i = 0; i < simple->num_clocks; i++) {
ret = clk_enable(simple->clks[i]);
if (ret < 0) {
while (--i >= 0)
clk_disable(simple->clks[i]);
return ret;
}
}
return 0;
return clk_bulk_enable(simple->num_clocks, simple->clks);
}
static int __maybe_unused dwc3_of_simple_suspend(struct device *dev)