Le 15/08/2022 à 09:06, lewis.hanly@xxxxxxxxxxxxx a écrit :
From: Lewis Hanly <lewis.hanly@xxxxxxxxxxxxx>
Add a driver to support the Polarfire SoC gpio controller
Signed-off-by: Lewis Hanly <lewis.hanly@xxxxxxxxxxxxx>
---
drivers/gpio/Kconfig | 7 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-mpfs.c | 318 +++++++++++++++++++++++++++++++++++++++
3 files changed, 326 insertions(+)
create mode 100644 drivers/gpio/gpio-mpfs.c
+static int mpfs_gpio_probe(struct platform_device *pdev)
+{
+ struct clk *clk;
+ struct device *dev = &pdev->dev;
+ struct device_node *node = pdev->dev.of_node;
+ struct mpfs_gpio_chip *mpfs_gpio;
+ struct gpio_irq_chip *girq;
+ int i, ret, ngpios, nirqs;
+
+ mpfs_gpio = devm_kzalloc(dev, sizeof(*mpfs_gpio), GFP_KERNEL);
+ if (!mpfs_gpio)
+ return -ENOMEM;
+
+ mpfs_gpio->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(mpfs_gpio->base))
+ return dev_err_probe(dev, PTR_ERR(mpfs_gpio->clk), "input clock not found.\n");
PTR_ERR(mpfs_gpio->base)?
"input clock not found" also looks odd after a
devm_platform_ioremap_resource() call.
+
+ clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(clk))
+ return dev_err_probe(dev, PTR_ERR(clk), "devm_clk_get failed\n");
+
