Messages in this thread | | | Subject | Re: [PATCH 09/15] drm/panfrost: dynamically alloc regulators | From | Steven Price <> | Date | Thu, 28 May 2020 14:22:57 +0100 |
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On 10/05/2020 17:55, Clément Péron wrote: > We will later introduce regulators managed by OPP. > > Only alloc regulators when it's needed. This also help use > to release the regulators only when they are allocated. > > Signed-off-by: Clément Péron <peron.clem@gmail.com>
LGTM:
Reviewed-by: Steven Price <steven.price@arm.com>
> --- > drivers/gpu/drm/panfrost/panfrost_device.c | 14 +++++++++----- > drivers/gpu/drm/panfrost/panfrost_device.h | 3 +-- > 2 files changed, 10 insertions(+), 7 deletions(-) > > diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c b/drivers/gpu/drm/panfrost/panfrost_device.c > index f480127205d6..67eedf64e82d 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_device.c > +++ b/drivers/gpu/drm/panfrost/panfrost_device.c > @@ -90,9 +90,11 @@ static int panfrost_regulator_init(struct panfrost_device *pfdev) > { > int ret, i; > > - if (WARN(pfdev->comp->num_supplies > ARRAY_SIZE(pfdev->regulators), > - "Too many supplies in compatible structure.\n")) > - return -EINVAL; > + pfdev->regulators = devm_kcalloc(pfdev->dev, pfdev->comp->num_supplies, > + sizeof(*pfdev->regulators), > + GFP_KERNEL); > + if (!pfdev->regulators) > + return -ENOMEM; > > for (i = 0; i < pfdev->comp->num_supplies; i++) > pfdev->regulators[i].supply = pfdev->comp->supply_names[i]; > @@ -117,8 +119,10 @@ static int panfrost_regulator_init(struct panfrost_device *pfdev) > > static void panfrost_regulator_fini(struct panfrost_device *pfdev) > { > - regulator_bulk_disable(pfdev->comp->num_supplies, > - pfdev->regulators); > + if (!pfdev->regulators) > + return; > + > + regulator_bulk_disable(pfdev->comp->num_supplies, pfdev->regulators); > } > > static void panfrost_pm_domain_fini(struct panfrost_device *pfdev) > diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h > index 2efa59c9d1c5..953f7536a773 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_device.h > +++ b/drivers/gpu/drm/panfrost/panfrost_device.h > @@ -22,7 +22,6 @@ struct panfrost_job; > struct panfrost_perfcnt; > > #define NUM_JOB_SLOTS 3 > -#define MAX_REGULATORS 2 > #define MAX_PM_DOMAINS 3 > > struct panfrost_features { > @@ -81,7 +80,7 @@ struct panfrost_device { > void __iomem *iomem; > struct clk *clock; > struct clk *bus_clock; > - struct regulator_bulk_data regulators[MAX_REGULATORS]; > + struct regulator_bulk_data *regulators; > struct reset_control *rstc; > /* pm_domains for devices with more than one. */ > struct device *pm_domain_devs[MAX_PM_DOMAINS]; >
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