0545e9dc6d
commit d1edce71135cc6d98c0a4b5729774542b676e769 Author: sophgo-forum-service <forum_service@sophgo.com> Date: Fri Mar 15 16:07:33 2024 +0800 [fix] recommend using ssh method to clone repo. [fix] fix sensor driver repo branch name.
109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#include "pinctrl-cv180x.h"
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struct cvitek_pinctrl {
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struct device *dev;
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void __iomem *regs;
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size_t regs_size;
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uint32_t *saved_regs;
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};
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static int cvi_pinctrl_probe(struct platform_device *pdev)
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{
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struct resource *res;
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struct cvitek_pinctrl *pinctrl;
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pinctrl = devm_kzalloc(&pdev->dev, sizeof(*pinctrl), GFP_KERNEL);
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if (!pinctrl)
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return -ENOMEM;
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pinctrl->saved_regs =
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devm_kzalloc(&pdev->dev, CVITEK_PINMUX_REG_LAST, GFP_KERNEL);
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if (!pinctrl->saved_regs)
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return -ENOMEM;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res) {
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dev_err(&pdev->dev, "Failed to get pinctrl io resource.\n");
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return -EINVAL;
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}
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pinctrl->regs_size = resource_size(res);
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pinctrl->regs = devm_ioremap_resource(&pdev->dev, res);
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if (!pinctrl->regs)
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return -ENOMEM;
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platform_set_drvdata(pdev, pinctrl);
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dev_info(&pdev->dev, "%s(): reg=%p,%zu CVITEK_PINMUX_REG_LAST=0x%x\n",
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__func__, pinctrl->regs, pinctrl->regs_size,
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CVITEK_PINMUX_REG_LAST);
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return 0;
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}
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static int cvi_pinctrl_remove(struct platform_device *pdev)
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{
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dev_info(&pdev->dev, "%s()\n", __func__);
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return 0;
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}
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#ifdef CONFIG_PM_SLEEP
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static int cvitek_pinctrl_suspend(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct cvitek_pinctrl *pinctrl = platform_get_drvdata(pdev);
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dev_info(&pdev->dev, "%s()\n", __func__);
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memcpy_fromio(pinctrl->saved_regs, pinctrl->regs,
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CVITEK_PINMUX_REG_LAST);
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return 0;
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}
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static int cvitek_pinctrl_resume(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct cvitek_pinctrl *pinctrl = platform_get_drvdata(pdev);
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dev_info(&pdev->dev, "%s()\n", __func__);
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memcpy_toio(pinctrl->regs, pinctrl->saved_regs, CVITEK_PINMUX_REG_LAST);
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return 0;
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}
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#endif /* CONFIG_PM_SLEEP */
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static const struct of_device_id cvi_pinctrl_of_match[] = {
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{ .compatible = "cvitek,pinctrl-cv180x" },
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{},
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};
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static const struct dev_pm_ops cvitek_pinctrl_pm_ops = {
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SET_LATE_SYSTEM_SLEEP_PM_OPS(cvitek_pinctrl_suspend,
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cvitek_pinctrl_resume)
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};
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static struct platform_driver cvi_pinctrl_driver = {
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.probe = cvi_pinctrl_probe,
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.remove = cvi_pinctrl_remove,
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.driver = {
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.name = "cvitek,pinctrl-cv180x",
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.of_match_table = cvi_pinctrl_of_match,
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#ifdef CONFIG_PM_SLEEP
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.pm = &cvitek_pinctrl_pm_ops,
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#endif
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},
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};
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module_platform_driver(cvi_pinctrl_driver);
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MODULE_DESCRIPTION("Cvitek pinctrl");
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MODULE_AUTHOR("Cvitek");
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MODULE_LICENSE("GPL v2");
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