diff options
Diffstat (limited to 'roms/u-boot/drivers/misc/smsc_lpc47m.c')
| -rw-r--r-- | roms/u-boot/drivers/misc/smsc_lpc47m.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/misc/smsc_lpc47m.c b/roms/u-boot/drivers/misc/smsc_lpc47m.c new file mode 100644 index 000000000..bda064f13 --- /dev/null +++ b/roms/u-boot/drivers/misc/smsc_lpc47m.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> + */ + +#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(uint dev, uint iobase, uint irq) +{ + 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_irq(dev, PNP_IDX_IRQ0, irq); + pnp_set_enable(dev, 1); + pnp_exit_conf_state(dev); +} + +void lpc47m_enable_kbc(uint dev, uint irq0, uint irq1) +{ + pnp_enter_conf_state(dev); + pnp_set_logical_device(dev); + pnp_set_enable(dev, 0); + pnp_set_irq(dev, PNP_IDX_IRQ0, irq0); + pnp_set_irq(dev, PNP_IDX_IRQ1, irq1); + pnp_set_enable(dev, 1); + pnp_exit_conf_state(dev); +} |