diff options
| author | Patrice Chotard <patrice.chotard@st.com> | 2018-08-03 15:07:39 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-09-10 20:20:38 -0400 |
| commit | fbd5c72d767d04adb780188cb47772ed386fb297 (patch) | |
| tree | 7445cd6630152c118048b68a412308768be95634 /drivers/serial/serial_stm32.c | |
| parent | cbf538831d4b49d914cfdd885204f2551c8608e2 (diff) | |
serial: stm32: Replace setparity by setconfig
Replace stm32_serial_setparity by stm32_serial_setconfig
which allows to set serial bits number, parity and stop
bits number.
Only parity setting is implemented.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/serial/serial_stm32.c')
| -rw-r--r-- | drivers/serial/serial_stm32.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/serial/serial_stm32.c b/drivers/serial/serial_stm32.c index f26234549c..66e02d5689 100644 --- a/drivers/serial/serial_stm32.c +++ b/drivers/serial/serial_stm32.c @@ -47,20 +47,28 @@ static int stm32_serial_setbrg(struct udevice *dev, int baudrate) return 0; } -static int stm32_serial_setparity(struct udevice *dev, enum serial_par parity) +static int stm32_serial_setconfig(struct udevice *dev, uint serial_config) { struct stm32x7_serial_platdata *plat = dev_get_platdata(dev); bool stm32f4 = plat->uart_info->stm32f4; u8 uart_enable_bit = plat->uart_info->uart_enable_bit; u32 cr1 = plat->base + CR1_OFFSET(stm32f4); u32 config = 0; - - if (stm32f4) - return -EINVAL; /* not supported in driver*/ + uint parity = SERIAL_GET_PARITY(serial_config); + uint bits = SERIAL_GET_BITS(serial_config); + uint stop = SERIAL_GET_STOP(serial_config); + + /* + * only parity config is implemented, check if other serial settings + * are the default one. + * (STM32F4 serial IP didn't support parity setting) + */ + if (bits != SERIAL_8_BITS || stop != SERIAL_ONE_STOP || stm32f4) + return -ENOTSUPP; /* not supported in driver*/ clrbits_le32(cr1, USART_CR1_RE | USART_CR1_TE | BIT(uart_enable_bit)); /* update usart configuration (uart need to be disable) - * PCE: parity check control + * PCE: parity check enable * PS : '0' : Even / '1' : Odd * M[1:0] = '00' : 8 Data bits * M[1:0] = '01' : 9 Data bits with parity @@ -77,6 +85,7 @@ static int stm32_serial_setparity(struct udevice *dev, enum serial_par parity) config = USART_CR1_PCE | USART_CR1_M0; break; } + clrsetbits_le32(cr1, USART_CR1_PCE | USART_CR1_PS | USART_CR1_M1 | USART_CR1_M0, @@ -210,7 +219,7 @@ static const struct dm_serial_ops stm32_serial_ops = { .pending = stm32_serial_pending, .getc = stm32_serial_getc, .setbrg = stm32_serial_setbrg, - .setparity = stm32_serial_setparity + .setconfig = stm32_serial_setconfig }; U_BOOT_DRIVER(serial_stm32) = { |