From: Steven Price <steven.price@arm.com>
To: "Clément Péron" <peron.clem@gmail.com>,
"Rob Herring" <robh@kernel.org>,
"Tomeu Vizoso" <tomeu.vizoso@collabora.com>,
"Alyssa Rosenzweig" <alyssa.rosenzweig@collabora.com>,
"Viresh Kumar" <vireshk@kernel.org>, "Nishanth Menon" <nm@ti.com>,
"Stephen Boyd" <sboyd@kernel.org>,
"Maxime Ripard" <mripard@kernel.org>,
"Chen-Yu Tsai" <wens@csie.org>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 09/15] drm/panfrost: dynamically alloc regulators
Date: Thu, 28 May 2020 14:22:57 +0100 [thread overview]
Message-ID: <1988db9d-6340-1e36-d567-21b2164fbeb2@arm.com> (raw)
In-Reply-To: <20200510165538.19720-10-peron.clem@gmail.com>
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];
>
next prev parent reply other threads:[~2020-05-28 13:23 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-10 16:55 [PATCH 00/15][RFC] Add regulator devfreq support to Panfrost Clément Péron
2020-05-10 16:55 ` [PATCH 01/15] drm/panfrost: avoid static declaration Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 02/15] drm/panfrost: clean headers in devfreq Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 03/15] drm/panfrost: don't use pfdevfreq.busy_count to know if hw is idle Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 04/15] drm/panfrost: introduce panfrost_devfreq struct Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 05/15] drm/panfrost: use spinlock instead of atomic Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-29 12:20 ` Robin Murphy
2020-05-29 12:35 ` Clément Péron
2020-05-29 12:47 ` Steven Price
2020-05-10 16:55 ` [PATCH 06/15] drm/panfrost: properly handle error in probe Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-10 16:55 ` [PATCH 07/15] drm/panfrost: use device_property_present to check for OPP Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-29 12:45 ` Clément Péron
2020-05-10 16:55 ` [PATCH 08/15] drm/panfrost: move devfreq_init()/fini() in device Clément Péron
2020-05-28 13:22 ` Steven Price
2020-05-29 12:38 ` Clément Péron
2020-06-08 11:55 ` Tomeu Vizoso
2020-05-10 16:55 ` [PATCH 09/15] drm/panfrost: dynamically alloc regulators Clément Péron
2020-05-28 13:22 ` Steven Price [this message]
2020-05-10 16:55 ` [PATCH 10/15] drm/panfrost: add regulators to devfreq Clément Péron
2020-05-28 13:23 ` Steven Price
2020-05-29 12:37 ` Clément Péron
2020-05-10 16:55 ` [PATCH 11/15] drm/panfrost: set devfreq clock name Clément Péron
2020-05-28 13:23 ` Steven Price
2020-05-29 12:35 ` Clément Péron
2020-05-10 16:55 ` [PATCH 12/15] arm64: defconfig: Enable devfreq cooling device Clément Péron
2020-05-10 16:55 ` [PATCH 13/15] arm64: dts: allwinner: h6: Add cooling map for GPU Clément Péron
2020-05-10 16:55 ` [PATCH 14/15] [DO NOT MERGE] arm64: dts: allwinner: h6: Add GPU OPP table Clément Péron
2020-05-10 16:55 ` [PATCH 15/15] [DO NOT MERGE] arm64: dts: allwinner: force GPU regulator to be always Clément Péron
2020-05-11 5:43 ` [PATCH 00/15][RFC] Add regulator devfreq support to Panfrost Tomeu Vizoso
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