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>
diff --git a/drivers/serial/serial_stm32.c b/drivers/serial/serial_stm32.c
index f262345..66e02d5 100644
--- a/drivers/serial/serial_stm32.c
+++ b/drivers/serial/serial_stm32.c
@@ -47,20 +47,28 @@
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 @@
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 @@
.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) = {