diff options
Diffstat (limited to 'drivers/ps2ser.c')
| -rw-r--r-- | drivers/ps2ser.c | 107 |
1 files changed, 104 insertions, 3 deletions
diff --git a/drivers/ps2ser.c b/drivers/ps2ser.c index 52f1db9ad9d..56925a8e03c 100644 --- a/drivers/ps2ser.c +++ b/drivers/ps2ser.c @@ -25,17 +25,88 @@ #define PS2SER_BAUD 57600 +#ifdef CONFIG_MPC5xxx +#if CONFIG_PS2SERIAL == 1 +#define PSC_BASE MPC5XXX_PSC1 +#elif CONFIG_PS2SERIAL == 2 +#define PSC_BASE MPC5XXX_PSC2 +#elif CONFIG_PS2SERIAL == 3 +#define PSC_BASE MPC5XXX_PSC3 +#elif defined(CONFIG_MGT5100) +#error CONFIG_PS2SERIAL must be in 1, 2 or 3 +#elif CONFIG_PS2SERIAL == 4 +#define PSC_BASE MPC5XXX_PSC4 +#elif CONFIG_PS2SERIAL == 5 +#define PSC_BASE MPC5XXX_PSC5 +#elif CONFIG_PS2SERIAL == 6 +#define PSC_BASE MPC5XXX_PSC6 +#else +#error CONFIG_PS2SERIAL must be in 1 ... 6 +#endif +#endif /* CONFIG_MPC5xxx */ + 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 static struct serial_state *state; +#endif static u_char ps2buf[PS2BUF_SIZE]; static atomic_t ps2buf_cnt; static int ps2buf_in_idx; static int ps2buf_out_idx; +#ifdef CONFIG_MPC5xxx +int ps2ser_init(void) +{ + DECLARE_GLOBAL_DATA_PTR; + + volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; + unsigned long baseclk; + int div; + + /* reset PSC */ + psc->command = PSC_SEL_MODE_REG_1; + + /* select clock sources */ +#if defined(CONFIG_MGT5100) + psc->psc_clock_select = 0xdd00; + baseclk = (CFG_MPC5XXX_CLKIN + 16) / 32; +#elif defined(CONFIG_MPC5200) + psc->psc_clock_select = 0; + baseclk = (gd->ipb_clk + 16) / 32; +#endif + + /* switch to UART mode */ + psc->sicr = 0; + + /* configure parity, bit length and so on */ +#if defined(CONFIG_MGT5100) + psc->mode = PSC_MODE_ERR | PSC_MODE_8_BITS | PSC_MODE_PARNONE; +#elif defined(CONFIG_MPC5200) + psc->mode = PSC_MODE_8_BITS | PSC_MODE_PARNONE; +#endif + psc->mode = PSC_MODE_ONE_STOP; + + /* set up UART divisor */ + div = (baseclk + (PS2SER_BAUD/2)) / PS2SER_BAUD; + psc->ctur = (div >> 8) & 0xff; + psc->ctlr = div & 0xff; + + /* disable all interrupts */ + psc->psc_imr = 0; + + /* reset and enable Rx/Tx */ + psc->command = PSC_RST_RX; + psc->command = PSC_RST_TX; + psc->command = PSC_RX_ENABLE | PSC_TX_ENABLE; + + return (0); +} + +#else /* !CONFIG_MPC5xxx */ static inline unsigned int ps2ser_in(int offset) { @@ -79,25 +150,44 @@ int ps2ser_init(void) return 0; } +#endif /* CONFIG_MPC5xxx */ void ps2ser_putc(int chr) { +#ifdef CONFIG_MPC5xxx + volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; +#endif #ifdef DEBUG printf(">>>> 0x%02x\n", chr); #endif +#ifdef CONFIG_MPC5xxx + while (!(psc->psc_status & PSC_SR_TXRDY)); + + psc->psc_buffer_8 = chr; +#else while (!(ps2ser_in(UART_LSR) & UART_LSR_THRE)); ps2ser_out(UART_TX, chr); +#endif } static int ps2ser_getc_hw(void) { +#ifdef CONFIG_MPC5xxx + volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; +#endif int res = -1; +#ifdef CONFIG_MPC5xxx + if (psc->psc_status & PSC_SR_RXRDY) { + res = (psc->psc_buffer_8); + } +#else if (ps2ser_in(UART_LSR) & UART_LSR_DR) { res = (ps2ser_in(UART_RX)); } +#endif return res; } @@ -146,12 +236,19 @@ int ps2ser_check(void) static void ps2ser_interrupt(void *dev_id) { +#ifdef CONFIG_MPC5xxx + volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE; +#endif int chr; - int iir; + int status; do { chr = ps2ser_getc_hw(); - iir = ps2ser_in(UART_IIR); +#ifdef CONFIG_MPC5xxx + status = psc->psc_status; +#else + status = ps2ser_in(UART_IIR); +#endif if (chr < 0) continue; if (atomic_read(&ps2buf_cnt) < PS2BUF_SIZE) { @@ -161,7 +258,11 @@ static void ps2ser_interrupt(void *dev_id) } else { printf ("ps2ser.c: buffer overflow\n"); } - } while (iir & UART_IIR_RDI); +#ifdef CONFIG_MPC5xxx + } while (status & PSC_SR_RXRDY); +#else + } while (status & UART_IIR_RDI); +#endif if (atomic_read(&ps2buf_cnt)) { ps2mult_callback(atomic_read(&ps2buf_cnt)); |