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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 22.09.2022 14:33, Sergiu Moga wrote: > When clearing the mode of the serial IP inside the atmel_set_termios() > method, make sure that the difference between the bitfields placement > of the UART IP's and USART IP's is taken into account, as some of > them overlap with each other. For example, ATMEL_UA_BRSRCCK overlaps > with ATMEL_US_NBSTOP and ATMEL_US_USCLKS overlaps with ATMEL_UA_FILTER. > > Furthermore, add definitions for the Baud Rate Source Clock and the > Filter bitfields of the Mode Register of UART IP's, since they were > missing. > > Signed-off-by: Sergiu Moga Reviewed-by: Claudiu Beznea > --- > > > v1 -> v5: > - This patch was not here before but it also includes the previous patch: > `[PATCH v4 7/9] tty: serial: atmel: Define BRSRCCK bitmask of UART IP's Mode Register` > squashed into it and define BRSRCCK as a bitfield instead of a bitmask, > since it is only 1 bit. > > > > drivers/tty/serial/atmel_serial.c | 7 +++++-- > drivers/tty/serial/atmel_serial.h | 2 ++ > 2 files changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c > index ab4a9dfae07d..e3e14cb7668b 100644 > --- a/drivers/tty/serial/atmel_serial.c > +++ b/drivers/tty/serial/atmel_serial.c > @@ -2134,8 +2134,11 @@ static void atmel_set_termios(struct uart_port *port, > mode = old_mode = atmel_uart_readl(port, ATMEL_US_MR); > > /* reset the mode, clock divisor, parity, stop bits and data size */ > - mode &= ~(ATMEL_US_USCLKS | ATMEL_US_CHRL | ATMEL_US_NBSTOP | > - ATMEL_US_PAR | ATMEL_US_USMODE); > + if (atmel_port->is_usart) > + mode &= ~(ATMEL_US_NBSTOP | ATMEL_US_PAR | ATMEL_US_CHRL | > + ATMEL_US_USCLKS | ATMEL_US_USMODE); > + else > + mode &= ~(ATMEL_UA_BRSRCCK | ATMEL_US_PAR | ATMEL_UA_FILTER); > > baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16); > > diff --git a/drivers/tty/serial/atmel_serial.h b/drivers/tty/serial/atmel_serial.h > index 0d8a0f9cc5c3..2a525b58e11a 100644 > --- a/drivers/tty/serial/atmel_serial.h > +++ b/drivers/tty/serial/atmel_serial.h > @@ -50,6 +50,7 @@ > #define ATMEL_US_USCLKS_MCK (0 << 4) > #define ATMEL_US_USCLKS_MCK_DIV8 (1 << 4) > #define ATMEL_US_USCLKS_SCK (3 << 4) > +#define ATMEL_UA_FILTER BIT(4) > #define ATMEL_US_CHRL GENMASK(7, 6) /* Character Length */ > #define ATMEL_US_CHRL_5 (0 << 6) > #define ATMEL_US_CHRL_6 (1 << 6) > @@ -67,6 +68,7 @@ > #define ATMEL_US_NBSTOP_1 (0 << 12) > #define ATMEL_US_NBSTOP_1_5 (1 << 12) > #define ATMEL_US_NBSTOP_2 (2 << 12) > +#define ATMEL_UA_BRSRCCK BIT(12) /* Clock Selection for UART */ > #define ATMEL_US_CHMODE GENMASK(15, 14) /* Channel Mode */ > #define ATMEL_US_CHMODE_NORMAL (0 << 14) > #define ATMEL_US_CHMODE_ECHO (1 << 14) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel