diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/misc/smsc_lpc47m.c | 33 |
2 files changed, 34 insertions, 0 deletions
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 6fa836f..a34972d 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -24,6 +24,7 @@ obj-$(CONFIG_PDSP188x) += pdsp188x.o ifdef CONFIG_DM_I2C obj-$(CONFIG_SANDBOX) += i2c_eeprom_emul.o endif +obj-$(CONFIG_SMSC_LPC47M) += smsc_lpc47m.o obj-$(CONFIG_STATUS_LED) += status_led.o obj-$(CONFIG_TWL4030_LED) += twl4030_led.o obj-$(CONFIG_FSL_IFC) += fsl_ifc.o diff --git a/drivers/misc/smsc_lpc47m.c b/drivers/misc/smsc_lpc47m.c new file mode 100644 index 0000000..d51f8e3 --- /dev/null +++ b/drivers/misc/smsc_lpc47m.c @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/pnp_def.h> + +static void pnp_enter_conf_state(u16 dev) +{ + u16 port = dev >> 8; + + outb(0x55, port); +} + +static void pnp_exit_conf_state(u16 dev) +{ + u16 port = dev >> 8; + + outb(0xaa, port); +} + +void lpc47m_enable_serial(u16 dev, u16 iobase) +{ + pnp_enter_conf_state(dev); + pnp_set_logical_device(dev); + pnp_set_enable(dev, 0); + pnp_set_iobase(dev, PNP_IDX_IO0, iobase); + pnp_set_enable(dev, 1); + pnp_exit_conf_state(dev); +} |