Hi Miquel,
On ven., oct. 06 2017, Miquel Raynal <miquel.raynal@xxxxxxxxxxxxxxxxxx> wrote:
> Define the missing register offsets and bit fields for the extended
> UART port. Add a second driver data structure filled with its port data,
> selected with the right compatible (marvell,armada-3700-uart-ext).
>
> Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Thanks,
Gregory
> ---
> drivers/tty/serial/mvebu-uart.c | 24 ++++++++++++++++++++++++
> 1 file changed, 24 insertions(+)
>
> diff --git a/drivers/tty/serial/mvebu-uart.c b/drivers/tty/serial/mvebu-uart.c
> index 3e46affa09a8..38b067e0ef0c 100644
> --- a/drivers/tty/serial/mvebu-uart.c
> +++ b/drivers/tty/serial/mvebu-uart.c
> @@ -39,10 +39,13 @@
>
> /* Register Map */
> #define UART_STD_RBR 0x00
> +#define UART_EXT_RBR 0x18
>
> #define UART_STD_TSH 0x04
> +#define UART_EXT_TSH 0x1C
>
> #define UART_STD_CTRL1 0x08
> +#define UART_EXT_CTRL1 0x04
> #define CTRL_SOFT_RST BIT(31)
> #define CTRL_TXFIFO_RST BIT(15)
> #define CTRL_RXFIFO_RST BIT(14)
> @@ -55,15 +58,20 @@
> CTRL_PAR_ERR_INT | CTRL_OVR_ERR_INT)
>
> #define UART_STD_CTRL2 UART_STD_CTRL1
> +#define UART_EXT_CTRL2 0x20
> #define CTRL_STD_TX_RDY_INT BIT(5)
> +#define CTRL_EXT_TX_RDY_INT BIT(6)
> #define CTRL_STD_RX_RDY_INT BIT(4)
> +#define CTRL_EXT_RX_RDY_INT BIT(5)
>
> #define UART_STAT 0x0C
> #define STAT_TX_FIFO_EMP BIT(13)
> #define STAT_TX_FIFO_FUL BIT(11)
> #define STAT_TX_EMP BIT(6)
> #define STAT_STD_TX_RDY BIT(5)
> +#define STAT_EXT_TX_RDY BIT(15)
> #define STAT_STD_RX_RDY BIT(4)
> +#define STAT_EXT_RX_RDY BIT(14)
> #define STAT_BRK_DET BIT(3)
> #define STAT_FRM_ERR BIT(2)
> #define STAT_PAR_ERR BIT(1)
> @@ -858,12 +866,28 @@ static struct mvebu_uart_driver_data uart_std_driver_data = {
> .flags.stat_rx_rdy = STAT_STD_RX_RDY,
> };
>
> +static struct mvebu_uart_driver_data uart_ext_driver_data = {
> + .is_ext = true,
> + .regs.rbr = UART_EXT_RBR,
> + .regs.tsh = UART_EXT_TSH,
> + .regs.ctrl = UART_EXT_CTRL1,
> + .regs.intr = UART_EXT_CTRL2,
> + .flags.ctrl_tx_rdy_int = CTRL_EXT_TX_RDY_INT,
> + .flags.ctrl_rx_rdy_int = CTRL_EXT_RX_RDY_INT,
> + .flags.stat_tx_rdy = STAT_EXT_TX_RDY,
> + .flags.stat_rx_rdy = STAT_EXT_RX_RDY,
> +};
> +
> /* Match table for of_platform binding */
> static const struct of_device_id mvebu_uart_of_match[] = {
> {
> .compatible = "marvell,armada-3700-uart",
> .data = (void *)&uart_std_driver_data,
> },
> + {
> + .compatible = "marvell,armada-3700-uart-ext",
> + .data = (void *)&uart_ext_driver_data,
> + },
> {}
> };
>
> --
> 2.11.0
>
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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