From: Bartosz Golaszewski <brgl@bgdev.pl>
To: Marcel Holtmann <marcel@holtmann.org>,
Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
"David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>, Kalle Valo <kvalo@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Saravana Kannan <saravanak@google.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Arnd Bergmann <arnd@arndb.de>,
Neil Armstrong <neil.armstrong@linaro.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Alex Elder <elder@linaro.org>,
Srini Kandagatla <srinivas.kandagatla@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Abel Vesa <abel.vesa@linaro.org>,
Manivannan Sadhasivam <mani@kernel.org>,
Lukas Wunner <lukas@wunner.de>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
linux-pm@vger.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Subject: [PATCH v6 16/16] PCI/pwrctl: add a PCI power control driver for power sequenced devices
Date: Mon, 25 Mar 2024 14:16:24 +0100 [thread overview]
Message-ID: <20240325131624.26023-17-brgl@bgdev.pl> (raw)
In-Reply-To: <20240325131624.26023-1-brgl@bgdev.pl>
From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Add a PCI power control driver that's capable of correctly powering up
devices using the power sequencing subsystem. The first user of this
driver is the ath11k module on QCA6390.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
drivers/pci/pwrctl/Kconfig | 9 +++
drivers/pci/pwrctl/Makefile | 2 +
drivers/pci/pwrctl/pci-pwrctl-pwrseq.c | 89 ++++++++++++++++++++++++++
3 files changed, 100 insertions(+)
create mode 100644 drivers/pci/pwrctl/pci-pwrctl-pwrseq.c
diff --git a/drivers/pci/pwrctl/Kconfig b/drivers/pci/pwrctl/Kconfig
index 96195395af69..eb126225eb9f 100644
--- a/drivers/pci/pwrctl/Kconfig
+++ b/drivers/pci/pwrctl/Kconfig
@@ -5,4 +5,13 @@ menu "PCI Power control drivers"
config PCI_PWRCTL
tristate
+config PCI_PWRCTL_PWRSEQ
+ tristate "PCI Power Control driver using the Power Sequencing subsystem"
+ select POWER_SEQUENCING
+ select PCI_PWRCTL
+ default m if (ATH11K_PCI && ARCH_QCOM)
+ help
+ Enable support for the PCI power control driver for device
+ drivers using the Power Sequencing subsystem.
+
endmenu
diff --git a/drivers/pci/pwrctl/Makefile b/drivers/pci/pwrctl/Makefile
index 52ae0640ef7b..d308aae4800c 100644
--- a/drivers/pci/pwrctl/Makefile
+++ b/drivers/pci/pwrctl/Makefile
@@ -2,3 +2,5 @@
obj-$(CONFIG_PCI_PWRCTL) += pci-pwrctl-core.o
pci-pwrctl-core-y := core.o
+
+obj-$(CONFIG_PCI_PWRCTL_PWRSEQ) += pci-pwrctl-pwrseq.o
diff --git a/drivers/pci/pwrctl/pci-pwrctl-pwrseq.c b/drivers/pci/pwrctl/pci-pwrctl-pwrseq.c
new file mode 100644
index 000000000000..c7a113a76c0c
--- /dev/null
+++ b/drivers/pci/pwrctl/pci-pwrctl-pwrseq.c
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2024 Linaro Ltd.
+ */
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/pci-pwrctl.h>
+#include <linux/platform_device.h>
+#include <linux/pwrseq/consumer.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+struct pci_pwrctl_pwrseq_data {
+ struct pci_pwrctl ctx;
+ struct pwrseq_desc *pwrseq;
+};
+
+static void devm_pci_pwrctl_pwrseq_power_off(void *data)
+{
+ struct pwrseq_desc *pwrseq = data;
+
+ pwrseq_power_off(pwrseq);
+}
+
+static int pci_pwrctl_pwrseq_probe(struct platform_device *pdev)
+{
+ struct pci_pwrctl_pwrseq_data *data;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->pwrseq = devm_pwrseq_get(dev, of_device_get_match_data(dev));
+ if (IS_ERR(data->pwrseq))
+ return dev_err_probe(dev, PTR_ERR(data->pwrseq),
+ "Failed to get the power sequencer\n");
+
+ ret = pwrseq_power_on(data->pwrseq);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to power-on the device\n");
+
+ ret = devm_add_action_or_reset(dev, devm_pci_pwrctl_pwrseq_power_off,
+ data->pwrseq);
+ if (ret)
+ return ret;
+
+ data->ctx.dev = dev;
+
+ ret = devm_pci_pwrctl_device_set_ready(dev, &data->ctx);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to register the pwrctl wrapper\n");
+
+ return 0;
+}
+
+static const struct of_device_id pci_pwrctl_pwrseq_of_match[] = {
+ {
+ /* ATH11K in QCA6390 package. */
+ .compatible = "pci17cb,1101",
+ .data = "wlan",
+ },
+ {
+ /* ATH12K in WCN7850 package. */
+ .compatible = "pci17cb,1107",
+ .data = "wlan",
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, pci_pwrctl_pwrseq_of_match);
+
+static struct platform_driver pci_pwrctl_pwrseq_driver = {
+ .driver = {
+ .name = "pci-pwrctl-pwrseq",
+ .of_match_table = pci_pwrctl_pwrseq_of_match,
+ },
+ .probe = pci_pwrctl_pwrseq_probe,
+};
+module_platform_driver(pci_pwrctl_pwrseq_driver);
+
+MODULE_AUTHOR("Bartosz Golaszewski <bartosz.golaszewski@linaro.org>");
+MODULE_DESCRIPTION("Generic PCI Power Control module for power sequenced devices");
+MODULE_LICENSE("GPL");
--
2.40.1
next prev parent reply other threads:[~2024-03-25 13:17 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-25 13:16 [PATCH v6 00/16] power: sequencing: implement the subsystem and add first users Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 01/16] regulator: dt-bindings: describe the PMU module of the QCA6390 package Bartosz Golaszewski
2024-03-25 14:33 ` Mark Brown
2024-03-27 18:17 ` Krzysztof Kozlowski
2024-03-27 18:55 ` Bartosz Golaszewski
2024-03-28 9:06 ` Krzysztof Kozlowski
2024-03-28 9:07 ` Krzysztof Kozlowski
2024-03-25 13:16 ` [PATCH v6 02/16] regulator: dt-bindings: describe the PMU module of the WCN7850 package Bartosz Golaszewski
2024-03-25 14:34 ` Mark Brown
2024-03-27 18:19 ` Krzysztof Kozlowski
2024-03-27 18:56 ` Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 03/16] dt-bindings: net: bluetooth: qualcomm: describe regulators for QCA6390 Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 04/16] dt-bindings: net: wireless: qcom,ath11k: describe the ath11k on QCA6390 Bartosz Golaszewski
2024-03-25 13:57 ` Kalle Valo
2024-03-25 14:09 ` Bartosz Golaszewski
2024-03-25 14:37 ` Kalle Valo
2024-03-25 16:23 ` Bartosz Golaszewski
2024-03-26 15:12 ` Kalle Valo
2024-03-26 16:32 ` Bartosz Golaszewski
2024-03-26 17:05 ` Johan Hovold
2024-03-26 8:11 ` Johan Hovold
2024-03-25 20:03 ` Jeff Johnson
2024-03-25 13:16 ` [PATCH v6 05/16] dt-bindings: net: wireless: describe the ath12k PCI module Bartosz Golaszewski
2024-03-25 14:01 ` Kalle Valo
2024-04-03 14:56 ` Bartosz Golaszewski
2024-04-05 9:33 ` Kalle Valo
2024-04-05 9:37 ` Krzysztof Kozlowski
2024-04-05 9:41 ` Krzysztof Kozlowski
2024-04-05 9:52 ` Bartosz Golaszewski
2024-04-05 15:44 ` Jeff Johnson
2024-03-27 18:21 ` Krzysztof Kozlowski
2024-03-25 13:16 ` [PATCH v6 06/16] arm64: dts: qcom: sm8550-qrd: add the Wifi node Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 07/16] arm64: dts: qcom: sm8650-qrd: " Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 08/16] arm64: dts: qcom: qrb5165-rb5: " Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 09/16] PCI: hold the rescan mutex when scanning for the first time Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 10/16] PCI/pwrctl: reuse the OF node for power controlled devices Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 11/16] PCI/pwrctl: create platform devices for child OF nodes of the port node Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 12/16] PCI/pwrctl: add PCI power control core code Bartosz Golaszewski
2024-03-27 16:16 ` Simon Horman
2024-03-25 13:16 ` [PATCH v6 13/16] power: sequencing: implement the pwrseq core Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 14/16] power: pwrseq: add a driver for the PMU module on the QCom WCN chipsets Bartosz Golaszewski
2024-03-25 13:16 ` [PATCH v6 15/16] Bluetooth: qca: use the power sequencer for QCA6390 Bartosz Golaszewski
2024-03-25 13:16 ` Bartosz Golaszewski [this message]
2024-04-06 3:03 ` [PATCH v6 00/16] power: sequencing: implement the subsystem and add first users Xilin Wu
2024-04-09 15:35 ` Bartosz Golaszewski
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