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x86: superio: Add keyboard controller support to smsc_lpc47m driver

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Add an api to enable and configure the integrated keyboard controller
on SMSC LPC47m superio chipset. It also adds several macros to help
future extension.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2015-08-21 00:18:51 -07:00 committed by Simon Glass
parent 348b744b7c
commit c78dfb4fd2
3 changed files with 40 additions and 5 deletions
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3
arch/x86/include/asm/ibmpc.h
View file

@ -24,4 +24,7 @@
#define UART0_IRQ 4
#define UART1_IRQ 3
#define KBD_IRQ 1
#define MSE_IRQ 12
#endif

13
drivers/misc/smsc_lpc47m.c
View file

@ -22,7 +22,7 @@ static void pnp_exit_conf_state(u16 dev)
outb(0xaa, port);
}
void lpc47m_enable_serial(u16 dev, u16 iobase, u8 irq)
void lpc47m_enable_serial(uint dev, uint iobase, uint irq)
{
pnp_enter_conf_state(dev);
pnp_set_logical_device(dev);
@ -32,3 +32,14 @@ void lpc47m_enable_serial(u16 dev, u16 iobase, u8 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);
}

29
include/smsc_lpc47m.h
View file

@ -7,14 +7,35 @@
#ifndef _SMSC_LPC47M_H_
#define _SMSC_LPC47M_H_
/* I/O address of LPC47M */
#define LPC47M_IO_PORT 0x2e
/* Logical device number */
#define LPC47M_FDC 0 /* Floppy */
#define LPC47M_SP2 2 /* Serial Port 2 */
#define LPC47M_PP 3 /* Parallel Port */
#define LPC47M_SP1 4 /* Serial Port 1 */
#define LPC47M_KBC 7 /* Keyboard & Mouse */
#define LPC47M_PME 10 /* Power Control */
/**
* Configure the base I/O port of the specified serial device and enable the
* serial device.
*
* @dev: High 8 bits = Super I/O port, low 8 bits = logical device number.
* @iobase: Processor I/O port address to assign to this serial device.
* @irq: Processor IRQ number to assign to this serial device.
* @dev: high 8 bits = super I/O port, low 8 bits = logical device number
* @iobase: processor I/O port address to assign to this serial device
* @irq: processor IRQ number to assign to this serial device
*/
void lpc47m_enable_serial(u16 dev, u16 iobase, u8 irq);
void lpc47m_enable_serial(uint dev, uint iobase, uint irq);
/**
* Configure the specified keyboard controller device and enable the keyboard
* controller device.
*
* @dev: high 8 bits = Super I/O port, low 8 bits = logical device number
* @irq0: processor IRQ number to assign to keyboard
* @irq1: processor IRQ number to assign to mouse
*/
void lpc47m_enable_kbc(uint dev, uint irq0, uint irq1);
#endif /* _SMSC_LPC47M_H_ */