* [PATCH v2 5/5] serial: tegra: Remove custom frame size calculation
[not found] <20220830084925.5608-1-ilpo.jarvinen@linux.intel.com>
@ 2022-08-30 8:49 ` Ilpo Järvinen
2022-09-15 12:33 ` Thierry Reding
0 siblings, 1 reply; 2+ messages in thread
From: Ilpo Järvinen @ 2022-08-30 8:49 UTC (permalink / raw)
To: Greg Kroah-Hartman, Jiri Slaby, linux-serial, Andy Shevchenko,
Laxman Dewangan, Thierry Reding, Jonathan Hunter, linux-tegra,
linux-kernel
Cc: Ilpo Järvinen, Andy Shevchenko
The number of bits can be calculated using tty_get_frame_size(), no
need for the driver to do it on its own.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
drivers/tty/serial/serial-tegra.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index ad4f3567ff90..5a56bd20abcd 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -1278,7 +1278,6 @@ static void tegra_uart_set_termios(struct uart_port *u,
unsigned long flags;
unsigned int lcr;
unsigned char char_bits;
- int symb_bit = 1;
struct clk *parent_clk = clk_get_parent(tup->uart_clk);
unsigned long parent_clk_rate = clk_get_rate(parent_clk);
int max_divider = (tup->cdata->support_clk_src_div) ? 0x7FFF : 0xFFFF;
@@ -1305,7 +1304,6 @@ static void tegra_uart_set_termios(struct uart_port *u,
termios->c_cflag &= ~CMSPAR;
if ((termios->c_cflag & PARENB) == PARENB) {
- symb_bit++;
if (termios->c_cflag & PARODD) {
lcr |= UART_LCR_PARITY;
lcr &= ~UART_LCR_EPAR;
@@ -1318,22 +1316,18 @@ static void tegra_uart_set_termios(struct uart_port *u,
}
char_bits = tty_get_char_size(termios->c_cflag);
- symb_bit += char_bits;
lcr &= ~UART_LCR_WLEN8;
lcr |= UART_LCR_WLEN(char_bits);
/* Stop bits */
- if (termios->c_cflag & CSTOPB) {
+ if (termios->c_cflag & CSTOPB)
lcr |= UART_LCR_STOP;
- symb_bit += 2;
- } else {
+ else
lcr &= ~UART_LCR_STOP;
- symb_bit++;
- }
tegra_uart_write(tup, lcr, UART_LCR);
tup->lcr_shadow = lcr;
- tup->symb_bit = symb_bit;
+ tup->symb_bit = tty_get_frame_size(termios->c_cflag);
/* Baud rate. */
baud = uart_get_baud_rate(u, termios, oldtermios,
--
2.30.2
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