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serial: 8250_exar: Fill in rs485_supported

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[ Upstream commit 59c221f8e1269278161313048c71929c9950b2c4 ]

Add information on supported serial_rs485 features.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-8-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 0c2a5f471ce5 ("serial: 8250_exar: Set missing rs485_supported flag")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ilpo Järvinen 2022-06-06 13:04:04 +03:00 committed by Greg Kroah-Hartman
parent dfd8b9d26b
commit 84bf7b8759
1 changed files with 12 additions and 0 deletions
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12
drivers/tty/serial/8250/8250_exar.c
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@ -123,6 +123,7 @@ struct exar8250;
struct exar8250_platform {
int (*rs485_config)(struct uart_port *, struct serial_rs485 *);
const struct serial_rs485 *rs485_supported;
int (*register_gpio)(struct pci_dev *, struct uart_8250_port *);
};
@ -423,9 +424,14 @@ static int generic_rs485_config(struct uart_port *port,
return 0;
}
static const struct serial_rs485 generic_rs485_supported = {
.flags = SER_RS485_ENABLED,
};
static const struct exar8250_platform exar8250_default_platform = {
.register_gpio = xr17v35x_register_gpio,
.rs485_config = generic_rs485_config,
.rs485_supported = &generic_rs485_supported,
};
static int iot2040_rs485_config(struct uart_port *port,
@ -461,6 +467,10 @@ static int iot2040_rs485_config(struct uart_port *port,
return generic_rs485_config(port, rs485);
}
static const struct serial_rs485 iot2040_rs485_supported = {
.flags = SER_RS485_ENABLED | SER_RS485_RX_DURING_TX | SER_RS485_TERMINATE_BUS,
};
static const struct property_entry iot2040_gpio_properties[] = {
PROPERTY_ENTRY_U32("exar,first-pin", 10),
PROPERTY_ENTRY_U32("ngpios", 1),
@ -485,6 +495,7 @@ static int iot2040_register_gpio(struct pci_dev *pcidev,
static const struct exar8250_platform iot2040_platform = {
.rs485_config = iot2040_rs485_config,
.rs485_supported = &iot2040_rs485_supported,
.register_gpio = iot2040_register_gpio,
};
@ -522,6 +533,7 @@ pci_xr17v35x_setup(struct exar8250 *priv, struct pci_dev *pcidev,
port->port.uartclk = baud * 16;
port->port.rs485_config = platform->rs485_config;
port->port.rs485_supported = platform->rs485_supported;
/*
* Setup the UART clock for the devices on expansion slot to