diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2017-06-02 07:27:59 +0200 |
|---|---|---|
| committer | Jan Kiszka <jan.kiszka@siemens.com> | 2017-07-03 08:30:54 +0200 |
| commit | 0d963ebf57d4c6374b3a33050a18af23c1e2ede1 (patch) | |
| tree | e7d793b7375709708747a179cecad7a4c4e7b65a /drivers | |
| parent | 4076cf08ac7673aca7d4dd9ddf18045d08dbc292 (diff) | |
serial: exar: Factor out platform hooks
This prepares the addition of IOT2040 platform support by preparing the
needed setup and rs485_config hooks.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/8250/8250_exar.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c index 32e3cb58193f..575a252dc936 100644 --- a/drivers/tty/serial/8250/8250_exar.c +++ b/drivers/tty/serial/8250/8250_exar.c @@ -63,6 +63,11 @@ struct exar8250; +struct exar8250_platform { + int (*rs485_config)(struct uart_port *, struct serial_rs485 *); + int (*register_gpio)(struct pci_dev *, struct uart_8250_port *); +}; + /** * struct exar8250_board - board information * @num_ports: number of serial ports @@ -189,7 +194,7 @@ static void setup_gpio(u8 __iomem *p) } static void * -xr17v35x_register_gpio(struct pci_dev *pcidev) +__xr17v35x_register_gpio(struct pci_dev *pcidev) { struct platform_device *pdev; @@ -208,17 +213,36 @@ xr17v35x_register_gpio(struct pci_dev *pcidev) return pdev; } +static int xr17v35x_register_gpio(struct pci_dev *pcidev, + struct uart_8250_port *port) +{ + if (pcidev->vendor == PCI_VENDOR_ID_EXAR) + port->port.private_data = + __xr17v35x_register_gpio(pcidev); + + return 0; +} + +static const struct exar8250_platform exar8250_default_platform = { + .register_gpio = xr17v35x_register_gpio, +}; + static int pci_xr17v35x_setup(struct exar8250 *priv, struct pci_dev *pcidev, struct uart_8250_port *port, int idx) { const struct exar8250_board *board = priv->board; + const struct exar8250_platform *platform; unsigned int offset = idx * 0x400; unsigned int baud = 7812500; u8 __iomem *p; int ret; + platform = &exar8250_default_platform; + port->port.uartclk = baud * 16; + port->port.rs485_config = platform->rs485_config; + /* * Setup the uart clock for the devices on expansion slot to * half the clock speed of the main chip (which is 125MHz) @@ -241,12 +265,10 @@ pci_xr17v35x_setup(struct exar8250 *priv, struct pci_dev *pcidev, /* Setup Multipurpose Input/Output pins. */ setup_gpio(p); - if (pcidev->vendor == PCI_VENDOR_ID_EXAR) - port->port.private_data = - xr17v35x_register_gpio(pcidev); + ret = platform->register_gpio(pcidev, port); } - return 0; + return ret; } static void pci_xr17v35x_exit(struct pci_dev *pcidev) |