From: Manivannan Sadhasivam <mani@kernel.org>
To: Thierry Reding <thierry.reding@kernel.org>
Cc: "Damien Le Moal" <dlemoal@kernel.org>,
"Niklas Cassel" <cassel@kernel.org>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Lyude Paul" <lyude@redhat.com>,
"Danilo Krummrich" <dakr@kernel.org>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>,
"Mikko Perttunen" <mperttunen@nvidia.com>,
"Dmitry Osipenko" <digetx@gmail.com>,
"Mauro Carvalho Chehab" <mchehab@kernel.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Mathias Nyman" <mathias.nyman@intel.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Philipp Zabel" <p.zabel@pengutronix.de>,
linux-ide@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
nouveau@lists.freedesktop.org, linux-media@vger.kernel.org,
linux-pci@vger.kernel.org, linux-usb@vger.kernel.org,
"Thierry Reding" <treding@nvidia.com>
Subject: Re: [PATCH 5/9] PCI: tegra: Explicitly specify PMC instance to use
Date: Fri, 15 May 2026 22:25:59 +0530 [thread overview]
Message-ID: <rt3tpcu7eucylbxurtvraghnyljkv52zau75jwkkbtyfslc2ox@2bjkryjd4nqp> (raw)
In-Reply-To: <20260506-pmc-v1-5-a6de5da7216b@nvidia.com>
On Wed, May 06, 2026 at 03:41:56PM +0200, Thierry Reding wrote:
> From: Thierry Reding <treding@nvidia.com>
>
> Currently the kernel relies on a global variable to reference the PMC
> context. Use an explicit lookup for the PMC and pass that to the public
> PMC APIs.
>
> Signed-off-by: Thierry Reding <treding@nvidia.com>
> ---
> drivers/pci/controller/pci-tegra.c | 20 +++++++++++++++-----
> 1 file changed, 15 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
> index 512309763d1f..2c6c521e6901 100644
> --- a/drivers/pci/controller/pci-tegra.c
> +++ b/drivers/pci/controller/pci-tegra.c
> @@ -340,6 +340,8 @@ struct tegra_pcie {
> struct reset_control *afi_rst;
> struct reset_control *pcie_xrst;
>
> + struct tegra_pmc *pmc;
> +
> bool legacy_phy;
> struct phy *phy;
>
> @@ -1165,7 +1167,7 @@ static void tegra_pcie_power_off(struct tegra_pcie *pcie)
> clk_disable_unprepare(pcie->afi_clk);
>
> if (!dev->pm_domain)
> - tegra_powergate_power_off(TEGRA_POWERGATE_PCIE);
> + tegra_pmc_powergate_power_off(pcie->pmc, TEGRA_POWERGATE_PCIE);
>
> err = regulator_bulk_disable(pcie->num_supplies, pcie->supplies);
> if (err < 0)
> @@ -1183,7 +1185,7 @@ static int tegra_pcie_power_on(struct tegra_pcie *pcie)
> reset_control_assert(pcie->pex_rst);
>
> if (!dev->pm_domain)
> - tegra_powergate_power_off(TEGRA_POWERGATE_PCIE);
> + tegra_pmc_powergate_power_off(pcie->pmc, TEGRA_POWERGATE_PCIE);
>
> /* enable regulators */
> err = regulator_bulk_enable(pcie->num_supplies, pcie->supplies);
> @@ -1191,12 +1193,14 @@ static int tegra_pcie_power_on(struct tegra_pcie *pcie)
> dev_err(dev, "failed to enable regulators: %d\n", err);
>
> if (!dev->pm_domain) {
> - err = tegra_powergate_power_on(TEGRA_POWERGATE_PCIE);
> + err = tegra_pmc_powergate_power_on(pcie->pmc,
> + TEGRA_POWERGATE_PCIE);
> if (err) {
> dev_err(dev, "failed to power ungate: %d\n", err);
> goto regulator_disable;
> }
> - err = tegra_powergate_remove_clamping(TEGRA_POWERGATE_PCIE);
> + err = tegra_pmc_powergate_remove_clamping(pcie->pmc,
> + TEGRA_POWERGATE_PCIE);
> if (err) {
> dev_err(dev, "failed to remove clamp: %d\n", err);
> goto powergate;
> @@ -1234,7 +1238,7 @@ static int tegra_pcie_power_on(struct tegra_pcie *pcie)
> clk_disable_unprepare(pcie->afi_clk);
> powergate:
> if (!dev->pm_domain)
> - tegra_powergate_power_off(TEGRA_POWERGATE_PCIE);
> + tegra_pmc_powergate_power_off(pcie->pmc, TEGRA_POWERGATE_PCIE);
> regulator_disable:
> regulator_bulk_disable(pcie->num_supplies, pcie->supplies);
>
> @@ -1432,6 +1436,12 @@ static int tegra_pcie_get_resources(struct tegra_pcie *pcie)
> return err;
> }
>
> + pcie->pmc = devm_tegra_pmc_get(dev);
> + if (IS_ERR(pcie->pmc)) {
> + dev_err_probe(dev, PTR_ERR(pcie->pmc), "failed to get PMC\n");
> + return err;
As Sashiko pointed out, you need to return dev_err_probe() directly.
- Mani
--
மணிவண்ணன் சதாசிவம்
next prev parent reply other threads:[~2026-05-15 16:56 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-06 13:41 [PATCH 0/9] soc/tegra: pmc: Clean up legacy code Thierry Reding
2026-05-06 13:41 ` [PATCH 1/9] ata: ahci_tegra: Explicitly specify PMC instance to use Thierry Reding
2026-05-06 13:54 ` Damien Le Moal
2026-05-06 13:41 ` [PATCH 2/9] drm/nouveau: tegra: " Thierry Reding
2026-05-21 8:00 ` Thierry Reding
2026-05-21 14:04 ` Danilo Krummrich
2026-05-22 10:15 ` Thierry Reding
2026-05-06 13:41 ` [PATCH 3/9] drm/tegra: " Thierry Reding
2026-05-06 20:41 ` sashiko-bot
2026-05-06 13:41 ` [PATCH 4/9] media: vde: " Thierry Reding
2026-05-21 7:57 ` Thierry Reding
2026-05-06 13:41 ` [PATCH 5/9] PCI: tegra: " Thierry Reding
2026-05-06 20:55 ` sashiko-bot
2026-05-15 16:55 ` Manivannan Sadhasivam [this message]
2026-05-15 16:57 ` Manivannan Sadhasivam
2026-05-06 13:41 ` [PATCH 6/9] usb: xhci: " Thierry Reding
2026-05-21 7:59 ` Thierry Reding
2026-05-21 14:00 ` Mathias Nyman
2026-05-06 13:41 ` [PATCH 7/9] soc/tegra: pmc: Create PMC context dynamically Thierry Reding
2026-05-06 21:40 ` sashiko-bot
2026-05-06 13:41 ` [PATCH 8/9] soc/tegra: pmc: Remove unused legacy functions Thierry Reding
2026-05-06 13:42 ` [PATCH 9/9] soc/tegra: pmc: Move legacy code behind CONFIG_ARM guard Thierry Reding
2026-05-06 22:37 ` sashiko-bot
2026-05-26 10:17 ` [PATCH 0/9] soc/tegra: pmc: Clean up legacy code Jon Hunter
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