[PATCH 12/16] serial: mvebu-uart: support extended port registers layout
From: Gregory CLEMENT <hidden>
Date: 2017-10-06 12:46:43
Also in:
linux-devicetree, linux-gpio, linux-serial
Possibly related (same subject, not in this thread)
- 2017-10-06 · [PATCH 12/16] serial: mvebu-uart: support extended port registers layout · Miquel Raynal <hidden>
Hi Miquel, On ven., oct. 06 2017, Miquel Raynal [off-list ref] 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 <redacted>
Reviewed-by: Gregory CLEMENT <redacted> Thanks, Gregory
quoted hunk
--- 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