cpm_uart: Support uart_wait_until_sent()
Set port->fifosize to the software FIFO size, and update the port timeout when the baud rate is modified. SCC ports have an optional 32 byte hardware FIFO which is currently not taken into account, as there is no documented way to check when the FIFO becomes empty. Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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1 changed files with 6 additions and 0 deletions
6
drivers/serial/cpm_uart/cpm_uart_core.c
Executable file → Normal file
6
drivers/serial/cpm_uart/cpm_uart_core.c
Executable file → Normal file
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@ -490,6 +490,11 @@ static void cpm_uart_set_termios(struct uart_port *port,
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}
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}
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}
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}
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/*
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* Update the timeout
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*/
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uart_update_timeout(port, termios->c_cflag, baud);
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/*
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/*
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* Set up parity check flag
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* Set up parity check flag
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*/
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*/
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@ -938,6 +943,7 @@ static int cpm_uart_init_port(struct device_node *np,
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pinfo->port.type = PORT_CPM;
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pinfo->port.type = PORT_CPM;
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pinfo->port.ops = &cpm_uart_pops,
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pinfo->port.ops = &cpm_uart_pops,
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pinfo->port.iotype = UPIO_MEM;
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pinfo->port.iotype = UPIO_MEM;
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pinfo->port.fifosize = pinfo->tx_nrfifos * pinfo->tx_fifosize;
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spin_lock_init(&pinfo->port.lock);
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spin_lock_init(&pinfo->port.lock);
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pinfo->port.irq = of_irq_to_resource(np, 0, NULL);
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pinfo->port.irq = of_irq_to_resource(np, 0, NULL);
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