From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: "Maíra Canal" <maira.canal@usp.br>, l.stach@pengutronix.de
Cc: hongxing.zhu@nxp.com, robh@kernel.org, bhelgaas@google.com,
helgaas@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de,
kernel@pengutronix.de, linux-imx@nxp.com,
linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] PCI: imx6: Replace legacy gpio interface for gpiod interface
Date: Fri, 8 Apr 2022 15:23:39 +0100 [thread overview]
Message-ID: <YlBFa46v5NtWxGLt@lpieralisi> (raw)
In-Reply-To: <YYCOTx68LXu1Tn1i@fedora>
On Mon, Nov 01, 2021 at 10:03:11PM -0300, Maíra Canal wrote:
> Considering the current transition of the GPIO subsystem, remove all
> dependencies of the legacy GPIO interface (linux/gpio.h and linux
> /of_gpio.h) and replace it with the descriptor-based GPIO approach.
>
> Signed-off-by: Maíra Canal <maira.canal@usp.br>
> ---
> V1 -> V2: Rewrite commit log and subject line to match PCI subsystem standard
> V2 -> v3: Change gpiod_set_value_cansleep for gpiod_set_raw_value_cansleep
> ---
> drivers/pci/controller/dwc/pci-imx6.c | 30 +++++++++------------------
> 1 file changed, 10 insertions(+), 20 deletions(-)
Maira, Lucas,
what's this patch status ? Please let me know.
Thanks,
Lorenzo
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
> index 80fc98acf097..f08865ac0b40 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -11,13 +11,12 @@
> #include <linux/bitfield.h>
> #include <linux/clk.h>
> #include <linux/delay.h>
> -#include <linux/gpio.h>
> +#include <linux/gpio/consumer.h>
> #include <linux/kernel.h>
> #include <linux/mfd/syscon.h>
> #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
> #include <linux/mfd/syscon/imx7-iomuxc-gpr.h>
> #include <linux/module.h>
> -#include <linux/of_gpio.h>
> #include <linux/of_device.h>
> #include <linux/of_address.h>
> #include <linux/pci.h>
> @@ -63,7 +62,7 @@ struct imx6_pcie_drvdata {
>
> struct imx6_pcie {
> struct dw_pcie *pci;
> - int reset_gpio;
> + struct gpio_desc *reset_gpio;
> bool gpio_active_high;
> struct clk *pcie_bus;
> struct clk *pcie_phy;
> @@ -526,11 +525,11 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
> usleep_range(200, 500);
>
> /* Some boards don't have PCIe reset GPIO. */
> - if (gpio_is_valid(imx6_pcie->reset_gpio)) {
> - gpio_set_value_cansleep(imx6_pcie->reset_gpio,
> + if (imx6_pcie->reset_gpio) {
> + gpiod_set_raw_value_cansleep(imx6_pcie->reset_gpio,
> imx6_pcie->gpio_active_high);
> msleep(100);
> - gpio_set_value_cansleep(imx6_pcie->reset_gpio,
> + gpiod_set_raw_value_cansleep(imx6_pcie->reset_gpio,
> !imx6_pcie->gpio_active_high);
> }
>
> @@ -1025,22 +1024,13 @@ static int imx6_pcie_probe(struct platform_device *pdev)
> return PTR_ERR(pci->dbi_base);
>
> /* Fetch GPIOs */
> - imx6_pcie->reset_gpio = of_get_named_gpio(node, "reset-gpio", 0);
> imx6_pcie->gpio_active_high = of_property_read_bool(node,
> "reset-gpio-active-high");
> - if (gpio_is_valid(imx6_pcie->reset_gpio)) {
> - ret = devm_gpio_request_one(dev, imx6_pcie->reset_gpio,
> - imx6_pcie->gpio_active_high ?
> - GPIOF_OUT_INIT_HIGH :
> - GPIOF_OUT_INIT_LOW,
> - "PCIe reset");
> - if (ret) {
> - dev_err(dev, "unable to get reset gpio\n");
> - return ret;
> - }
> - } else if (imx6_pcie->reset_gpio == -EPROBE_DEFER) {
> - return imx6_pcie->reset_gpio;
> - }
> + imx6_pcie->reset_gpio = devm_gpiod_get_optional(dev, "reset",
> + imx6_pcie->gpio_active_high ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW);
> + if (IS_ERR(imx6_pcie->reset_gpio))
> + return dev_err_probe(dev, PTR_ERR(imx6_pcie->reset_gpio),
> + "unable to get reset gpio\n");
>
> /* Fetch clocks */
> imx6_pcie->pcie_phy = devm_clk_get(dev, "pcie_phy");
> --
> 2.31.1
>
next prev parent reply other threads:[~2022-04-08 14:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-02 1:03 [PATCH v3] PCI: imx6: Replace legacy gpio interface for gpiod interface Maíra Canal
2022-04-08 14:23 ` Lorenzo Pieralisi [this message]
2022-04-08 14:46 ` Maíra Canal
2022-04-11 11:59 ` Francesco Dolcini
2022-04-11 16:03 ` Lucas Stach
2022-04-12 11:02 ` Maíra Canal
2022-04-11 15:25 ` Lorenzo Pieralisi
2022-04-20 23:24 ` Linus Walleij
2022-04-25 12:07 ` Lucas Stach
2022-04-25 13:40 ` Linus Walleij
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