Add support for PS/2 keyboard on TQM85xx board
Patch by Martin Krause, 07 Nov 2005
Tested on a STK85XX baseboard. Make sure the PS/2 controller
has been programmed. Jumper Settings: X66 1-2, 9-10; X61 2-3
diff --git a/drivers/ps2ser.c b/drivers/ps2ser.c
index 724fa40..8aea8fd 100644
--- a/drivers/ps2ser.c
+++ b/drivers/ps2ser.c
@@ -20,6 +20,9 @@
#include <asm/io.h>
#include <asm/atomic.h>
#include <ps2mult.h>
+#ifdef CFG_NS16550
+#include <ns16550.h>
+#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -45,13 +48,24 @@
#else
#error CONFIG_PS2SERIAL must be in 1 ... 6
#endif
+
+#elif defined(CONFIG_MPC85xx)
+
+#if CONFIG_PS2SERIAL == 1
+#define COM_BASE (CFG_CCSRBAR+0x4500)
+#elif CONFIG_PS2SERIAL == 2
+#define COM_BASE (CFG_CCSRBAR+0x4600)
+#else
+#error CONFIG_PS2SERIAL must be in 1 ... 2
+#endif
-#endif /* CONFIG_MPC5xxx */
+
+#endif /* CONFIG_MPC5xxx / CONFIG_MPC85xx */
static int ps2ser_getc_hw(void);
static void ps2ser_interrupt(void *dev_id);
extern struct serial_state rs_table[]; /* in serial.c */
-#ifndef CONFIG_MPC5xxx
+#if !defined(CONFIG_MPC5xxx) && !defined(CONFIG_MPC85xx)
static struct serial_state *state;
#endif
@@ -106,7 +120,23 @@
return (0);
}
-#else /* !CONFIG_MPC5xxx */
+#elif defined(CONFIG_MPC85xx)
+int ps2ser_init(void)
+{
+ NS16550_t com_port = (NS16550_t)COM_BASE;
+
+ com_port->ier = 0x00;
+ com_port->lcr = LCR_BKSE | LCR_8N1;
+ com_port->dll = (CFG_NS16550_CLK / 16 / PS2SER_BAUD) & 0xff;
+ com_port->dlm = ((CFG_NS16550_CLK / 16 / PS2SER_BAUD) >> 8) & 0xff;
+ com_port->lcr = LCR_8N1;
+ com_port->mcr = (MCR_DTR | MCR_RTS);
+ com_port->fcr = (FCR_FIFO_EN | FCR_RXSR | FCR_TXSR);
+
+ return (0);
+}
+
+#else /* !CONFIG_MPC5xxx && !CONFIG_MPC85xx */
static inline unsigned int ps2ser_in(int offset)
{
@@ -150,12 +180,14 @@
return 0;
}
-#endif /* CONFIG_MPC5xxx */
+#endif /* CONFIG_MPC5xxx / CONFIG_MPC85xx / other */
void ps2ser_putc(int chr)
{
#ifdef CONFIG_MPC5xxx
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#elif defined(CONFIG_MPC85xx)
+ NS16550_t com_port = (NS16550_t)COM_BASE;
#endif
#ifdef DEBUG
printf(">>>> 0x%02x\n", chr);
@@ -165,6 +197,9 @@
while (!(psc->psc_status & PSC_SR_TXRDY));
psc->psc_buffer_8 = chr;
+#elif defined(CONFIG_MPC85xx)
+ while ((com_port->lsr & LSR_THRE) == 0);
+ com_port->thr = chr;
#else
while (!(ps2ser_in(UART_LSR) & UART_LSR_THRE));
@@ -176,6 +211,8 @@
{
#ifdef CONFIG_MPC5xxx
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#elif defined(CONFIG_MPC85xx)
+ NS16550_t com_port = (NS16550_t)COM_BASE;
#endif
int res = -1;
@@ -183,6 +220,10 @@
if (psc->psc_status & PSC_SR_RXRDY) {
res = (psc->psc_buffer_8);
}
+#elif defined(CONFIG_MPC85xx)
+ if (com_port->lsr & LSR_DR) {
+ res = com_port->rbr;
+ }
#else
if (ps2ser_in(UART_LSR) & UART_LSR_DR) {
res = (ps2ser_in(UART_RX));
@@ -238,6 +279,8 @@
{
#ifdef CONFIG_MPC5xxx
volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#elif defined(CONFIG_MPC85xx)
+ NS16550_t com_port = (NS16550_t)COM_BASE;
#endif
int chr;
int status;
@@ -246,6 +289,8 @@
chr = ps2ser_getc_hw();
#ifdef CONFIG_MPC5xxx
status = psc->psc_status;
+#elif defined(CONFIG_MPC85xx)
+ status = com_port->lsr;
#else
status = ps2ser_in(UART_IIR);
#endif
@@ -260,6 +305,8 @@
}
#ifdef CONFIG_MPC5xxx
} while (status & PSC_SR_RXRDY);
+#elif defined(CONFIG_MPC85xx)
+ } while (status & LSR_DR);
#else
} while (status & UART_IIR_RDI);
#endif