diff options
| -rw-r--r-- | drivers/serial/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/serial/mcfuart.c | 106 |
2 files changed, 36 insertions, 78 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index fcbb0a81ed..8a447fd6e3 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -559,6 +559,14 @@ config MVEBU_A3700_UART Choose this option to add support for UART driver on the Marvell Armada 3700 SoC. The base address is configured via DT. +config MCFUART + bool "Freescale ColdFire UART support" + help + Choose this option to add support for UART driver on the ColdFire + SoC's family. The serial communication channel provides a full-duplex + asynchronous/synchronous receiver and transmitter deriving an + operating frequency from the internal bus clock or an external clock. + config MXC_UART bool "IMX serial port support" depends on MX5 || MX6 diff --git a/drivers/serial/mcfuart.c b/drivers/serial/mcfuart.c index 1371049de2..066e5a18d8 100644 --- a/drivers/serial/mcfuart.c +++ b/drivers/serial/mcfuart.c @@ -5,6 +5,9 @@ * * Modified to add device model (DM) support * (C) Copyright 2015 Angelo Dureghello <angelo@sysam.it> + * + * Modified to add DM and fdt support, removed non DM code + * (C) Copyright 2018 Angelo Dureghello <angelo@sysam.it> */ /* @@ -78,83 +81,6 @@ static void mcf_serial_setbrg_common(uart_t *uart, int baudrate) writeb(UART_UCR_RX_ENABLED | UART_UCR_TX_ENABLED, &uart->ucr); } -#ifndef CONFIG_DM_SERIAL - -static int mcf_serial_init(void) -{ - uart_t *uart_base; - int port_idx; - - uart_base = (uart_t *)CONFIG_SYS_UART_BASE; - port_idx = CONFIG_SYS_UART_PORT; - - return mcf_serial_init_common(uart_base, port_idx, gd->baudrate); -} - -static void mcf_serial_putc(const char c) -{ - uart_t *uart = (uart_t *)CONFIG_SYS_UART_BASE; - - if (c == '\n') - serial_putc('\r'); - - /* Wait for last character to go. */ - while (!(readb(&uart->usr) & UART_USR_TXRDY)) - ; - - writeb(c, &uart->utb); -} - -static int mcf_serial_getc(void) -{ - uart_t *uart = (uart_t *)CONFIG_SYS_UART_BASE; - - /* Wait for a character to arrive. */ - while (!(readb(&uart->usr) & UART_USR_RXRDY)) - ; - - return readb(&uart->urb); -} - -static void mcf_serial_setbrg(void) -{ - uart_t *uart = (uart_t *)CONFIG_SYS_UART_BASE; - - mcf_serial_setbrg_common(uart, gd->baudrate); -} - -static int mcf_serial_tstc(void) -{ - uart_t *uart = (uart_t *)CONFIG_SYS_UART_BASE; - - return readb(&uart->usr) & UART_USR_RXRDY; -} - -static struct serial_device mcf_serial_drv = { - .name = "mcf_serial", - .start = mcf_serial_init, - .stop = NULL, - .setbrg = mcf_serial_setbrg, - .putc = mcf_serial_putc, - .puts = default_serial_puts, - .getc = mcf_serial_getc, - .tstc = mcf_serial_tstc, -}; - -void mcf_serial_initialize(void) -{ - serial_register(&mcf_serial_drv); -} - -__weak struct serial_device *default_serial_console(void) -{ - return &mcf_serial_drv; -} - -#endif - -#ifdef CONFIG_DM_SERIAL - static int coldfire_serial_probe(struct udevice *dev) { struct coldfire_serial_platdata *plat = dev->platdata; @@ -212,6 +138,23 @@ static int coldfire_serial_pending(struct udevice *dev, bool input) return 0; } +static int coldfire_ofdata_to_platdata(struct udevice *dev) +{ + struct coldfire_serial_platdata *plat = dev_get_platdata(dev); + fdt_addr_t addr_base; + + addr_base = devfdt_get_addr(dev); + if (addr_base == FDT_ADDR_T_NONE) + return -ENODEV; + + plat->base = (uint32_t)addr_base; + + plat->port = dev->seq; + plat->baudrate = gd->baudrate; + + return 0; +} + static const struct dm_serial_ops coldfire_serial_ops = { .putc = coldfire_serial_putc, .pending = coldfire_serial_pending, @@ -219,11 +162,18 @@ static const struct dm_serial_ops coldfire_serial_ops = { .setbrg = coldfire_serial_setbrg, }; +static const struct udevice_id coldfire_serial_ids[] = { + { .compatible = "fsl,mcf-uart" }, + { } +}; + U_BOOT_DRIVER(serial_coldfire) = { .name = "serial_coldfire", .id = UCLASS_SERIAL, + .of_match = coldfire_serial_ids, + .ofdata_to_platdata = coldfire_ofdata_to_platdata, + .platdata_auto_alloc_size = sizeof(struct coldfire_serial_platdata), .probe = coldfire_serial_probe, .ops = &coldfire_serial_ops, .flags = DM_FLAG_PRE_RELOC, }; -#endif |