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serial: stm32: Replace setparity by setconfig

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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>
This commit is contained in:
Patrice Chotard 2018-08-03 15:07:39 +02:00 committed by Tom Rini
parent cbf538831d
commit fbd5c72d76
1 changed files with 14 additions and 5 deletions
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19
drivers/serial/serial_stm32.c
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@ -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;
uint parity = SERIAL_GET_PARITY(serial_config);
uint bits = SERIAL_GET_BITS(serial_config);
uint stop = SERIAL_GET_STOP(serial_config);
if (stm32f4)
return -EINVAL; /* not supported in driver*/
/*
* 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) = {