x86: superio: Add keyboard controller support to smsc_lpc47m driver

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>

arch/x86/include/asm/ibmpc.h

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

drivers/misc/smsc_lpc47m.c

@@ -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);
+}

include/smsc_lpc47m.h

@@ -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(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_serial(u16 dev, u16 iobase, u8 irq);
+void lpc47m_enable_kbc(uint dev, uint irq0, uint irq1);
 
 #endif /* _SMSC_LPC47M_H_ */