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serial: 8250_exar: Add ->unregister_gpio() callback
For the sake of reducing layering violation add ->unregister_gpio() callback and use it in the ->exit() one. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210713095821.7834-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -114,6 +114,7 @@ struct exar8250;
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struct exar8250_platform {
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int (*rs485_config)(struct uart_port *, struct serial_rs485 *);
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int (*register_gpio)(struct pci_dev *, struct uart_8250_port *);
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void (*unregister_gpio)(struct uart_8250_port *);
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};
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/**
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@ -352,9 +353,8 @@ static void setup_gpio(struct pci_dev *pcidev, u8 __iomem *p)
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writeb(0x00, p + UART_EXAR_MPIOOD_15_8);
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}
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static void *
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__xr17v35x_register_gpio(struct pci_dev *pcidev,
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const struct software_node *node)
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static struct platform_device *__xr17v35x_register_gpio(struct pci_dev *pcidev,
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const struct software_node *node)
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{
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struct platform_device *pdev;
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@ -374,6 +374,12 @@ __xr17v35x_register_gpio(struct pci_dev *pcidev,
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return pdev;
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}
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static void __xr17v35x_unregister_gpio(struct platform_device *pdev)
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{
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device_remove_software_node(&pdev->dev);
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platform_device_unregister(pdev);
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}
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static const struct property_entry exar_gpio_properties[] = {
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PROPERTY_ENTRY_U32("exar,first-pin", 0),
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PROPERTY_ENTRY_U32("ngpios", 16),
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@ -384,8 +390,7 @@ static const struct software_node exar_gpio_node = {
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.properties = exar_gpio_properties,
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};
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static int xr17v35x_register_gpio(struct pci_dev *pcidev,
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struct uart_8250_port *port)
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static int xr17v35x_register_gpio(struct pci_dev *pcidev, struct uart_8250_port *port)
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{
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if (pcidev->vendor == PCI_VENDOR_ID_EXAR)
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port->port.private_data =
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@ -394,6 +399,15 @@ static int xr17v35x_register_gpio(struct pci_dev *pcidev,
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return 0;
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}
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static void xr17v35x_unregister_gpio(struct uart_8250_port *port)
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{
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if (!port->port.private_data)
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return;
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__xr17v35x_unregister_gpio(port->port.private_data);
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port->port.private_data = NULL;
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}
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static int generic_rs485_config(struct uart_port *port,
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struct serial_rs485 *rs485)
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{
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@ -419,6 +433,7 @@ static int generic_rs485_config(struct uart_port *port,
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static const struct exar8250_platform exar8250_default_platform = {
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.register_gpio = xr17v35x_register_gpio,
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.unregister_gpio = xr17v35x_unregister_gpio,
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.rs485_config = generic_rs485_config,
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};
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@ -484,6 +499,7 @@ static int iot2040_register_gpio(struct pci_dev *pcidev,
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static const struct exar8250_platform iot2040_platform = {
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.rs485_config = iot2040_rs485_config,
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.register_gpio = iot2040_register_gpio,
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.unregister_gpio = xr17v35x_unregister_gpio,
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};
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/*
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@ -555,17 +571,11 @@ pci_xr17v35x_setup(struct exar8250 *priv, struct pci_dev *pcidev,
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static void pci_xr17v35x_exit(struct pci_dev *pcidev)
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{
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const struct exar8250_platform *platform = exar_get_platform();
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struct exar8250 *priv = pci_get_drvdata(pcidev);
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struct uart_8250_port *port = serial8250_get_port(priv->line[0]);
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struct platform_device *pdev;
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pdev = port->port.private_data;
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if (!pdev)
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return;
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device_remove_software_node(&pdev->dev);
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platform_device_unregister(pdev);
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port->port.private_data = NULL;
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platform->unregister_gpio(port);
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}
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static inline void exar_misc_clear(struct exar8250 *priv)
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