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PCI: histb: Switch to using gpiod API
This patch switches the driver away from legacy gpio/of_gpio API to gpiod API, and removes use of of_get_named_gpio_flags() which I want to make private to gpiolib. Link: https://lore.kernel.org/r/20220906204301.3736813-1-dmitry.torokhov@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
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@ -10,11 +10,11 @@
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_gpio.h>
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#include <linux/pci.h>
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#include <linux/phy/phy.h>
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#include <linux/platform_device.h>
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@ -60,7 +60,7 @@ struct histb_pcie {
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struct reset_control *sys_reset;
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struct reset_control *bus_reset;
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void __iomem *ctrl;
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int reset_gpio;
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struct gpio_desc *reset_gpio;
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struct regulator *vpcie;
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};
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@ -212,8 +212,8 @@ static void histb_pcie_host_disable(struct histb_pcie *hipcie)
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clk_disable_unprepare(hipcie->sys_clk);
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clk_disable_unprepare(hipcie->bus_clk);
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if (gpio_is_valid(hipcie->reset_gpio))
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gpio_set_value_cansleep(hipcie->reset_gpio, 0);
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if (hipcie->reset_gpio)
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gpiod_set_value_cansleep(hipcie->reset_gpio, 1);
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if (hipcie->vpcie)
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regulator_disable(hipcie->vpcie);
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@ -235,8 +235,8 @@ static int histb_pcie_host_enable(struct dw_pcie_rp *pp)
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}
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}
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if (gpio_is_valid(hipcie->reset_gpio))
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gpio_set_value_cansleep(hipcie->reset_gpio, 1);
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if (hipcie->reset_gpio)
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gpiod_set_value_cansleep(hipcie->reset_gpio, 0);
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ret = clk_prepare_enable(hipcie->bus_clk);
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if (ret) {
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@ -298,10 +298,7 @@ static int histb_pcie_probe(struct platform_device *pdev)
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struct histb_pcie *hipcie;
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struct dw_pcie *pci;
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struct dw_pcie_rp *pp;
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struct device_node *np = pdev->dev.of_node;
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struct device *dev = &pdev->dev;
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enum of_gpio_flags of_flags;
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unsigned long flag = GPIOF_DIR_OUT;
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int ret;
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hipcie = devm_kzalloc(dev, sizeof(*hipcie), GFP_KERNEL);
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@ -336,17 +333,19 @@ static int histb_pcie_probe(struct platform_device *pdev)
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hipcie->vpcie = NULL;
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}
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hipcie->reset_gpio = of_get_named_gpio_flags(np,
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"reset-gpios", 0, &of_flags);
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if (of_flags & OF_GPIO_ACTIVE_LOW)
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flag |= GPIOF_ACTIVE_LOW;
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if (gpio_is_valid(hipcie->reset_gpio)) {
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ret = devm_gpio_request_one(dev, hipcie->reset_gpio,
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flag, "PCIe device power control");
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hipcie->reset_gpio = devm_gpiod_get_optional(dev, "reset",
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GPIOD_OUT_HIGH);
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ret = PTR_ERR_OR_ZERO(hipcie->reset_gpio);
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if (ret) {
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dev_err(dev, "unable to request gpio\n");
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dev_err(dev, "unable to request reset gpio: %d\n", ret);
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return ret;
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}
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ret = gpiod_set_consumer_name(hipcie->reset_gpio,
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"PCIe device power control");
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if (ret) {
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dev_err(dev, "unable to set reset gpio name: %d\n", ret);
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return ret;
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}
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hipcie->aux_clk = devm_clk_get(dev, "aux");
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