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Blackfin: bfin_serial.h: unify heavily duplicated serial code 

Each Blackfin port has been duplicating UART structures and defines when
there really is no need for it.  So start a new bfin_serial.h header to
unify all these pieces and give ourselves a fresh start.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2009-09-28 03:16:01 +00:00
parent 709465d6ea
commit b1524e29e3
29 changed files with 377 additions and 1024 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

263
arch/blackfin/include/asm/bfin_serial.h Normal file
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@ -0,0 +1,263 @@
/*
* bfin_serial.h - Blackfin UART/Serial definitions
*
* Copyright 2006-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __BFIN_ASM_SERIAL_H__
#define __BFIN_ASM_SERIAL_H__
#include <linux/serial_core.h>
#include <mach/anomaly.h>
#include <mach/bfin_serial.h>
struct circ_buf;
struct timer_list;
struct work_struct;
struct bfin_serial_port {
struct uart_port port;
unsigned int old_status;
int status_irq;
#ifndef BFIN_UART_BF54X_STYLE
unsigned int lsr;
#endif
#ifdef CONFIG_SERIAL_BFIN_DMA
int tx_done;
int tx_count;
struct circ_buf rx_dma_buf;
struct timer_list rx_dma_timer;
int rx_dma_nrows;
unsigned int tx_dma_channel;
unsigned int rx_dma_channel;
struct work_struct tx_dma_workqueue;
#elif ANOMALY_05000363
unsigned int anomaly_threshold;
#endif
#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
int scts;
#endif
#if defined(CONFIG_SERIAL_BFIN_CTSRTS) || \
defined(CONFIG_SERIAL_BFIN_HARD_CTSRTS)
int cts_pin;
int rts_pin;
#endif
};
/* UART_LCR Masks */
#define WLS(x) (((x)-5) & 0x03) /* Word Length Select */
#define STB 0x04 /* Stop Bits */
#define PEN 0x08 /* Parity Enable */
#define EPS 0x10 /* Even Parity Select */
#define STP 0x20 /* Stick Parity */
#define SB 0x40 /* Set Break */
#define DLAB 0x80 /* Divisor Latch Access */
/* UART_LSR Masks */
#define DR 0x01 /* Data Ready */
#define OE 0x02 /* Overrun Error */
#define PE 0x04 /* Parity Error */
#define FE 0x08 /* Framing Error */
#define BI 0x10 /* Break Interrupt */
#define THRE 0x20 /* THR Empty */
#define TEMT 0x40 /* TSR and UART_THR Empty */
#define TFI 0x80 /* Transmission Finished Indicator */
/* UART_IER Masks */
#define ERBFI 0x01 /* Enable Receive Buffer Full Interrupt */
#define ETBEI 0x02 /* Enable Transmit Buffer Empty Interrupt */
#define ELSI 0x04 /* Enable RX Status Interrupt */
#define EDSSI 0x08 /* Enable Modem Status Interrupt */
#define EDTPTI 0x10 /* Enable DMA Transmit PIRQ Interrupt */
#define ETFI 0x20 /* Enable Transmission Finished Interrupt */
#define ERFCI 0x40 /* Enable Receive FIFO Count Interrupt */
/* UART_MCR Masks */
#define XOFF 0x01 /* Transmitter Off */
#define MRTS 0x02 /* Manual Request To Send */
#define RFIT 0x04 /* Receive FIFO IRQ Threshold */
#define RFRT 0x08 /* Receive FIFO RTS Threshold */
#define LOOP_ENA 0x10 /* Loopback Mode Enable */
#define FCPOL 0x20 /* Flow Control Pin Polarity */
#define ARTS 0x40 /* Automatic Request To Send */
#define ACTS 0x80 /* Automatic Clear To Send */
/* UART_MSR Masks */
#define SCTS 0x01 /* Sticky CTS */
#define CTS 0x10 /* Clear To Send */
#define RFCS 0x20 /* Receive FIFO Count Status */
/* UART_GCTL Masks */
#define UCEN 0x01 /* Enable UARTx Clocks */
#define IREN 0x02 /* Enable IrDA Mode */
#define TPOLC 0x04 /* IrDA TX Polarity Change */
#define RPOLC 0x08 /* IrDA RX Polarity Change */
#define FPE 0x10 /* Force Parity Error On Transmit */
#define FFE 0x20 /* Force Framing Error On Transmit */
#ifdef BFIN_UART_BF54X_STYLE
# define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
# define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
# define OFFSET_GCTL 0x08 /* Global Control Register */
# define OFFSET_LCR 0x0C /* Line Control Register */
# define OFFSET_MCR 0x10 /* Modem Control Register */
# define OFFSET_LSR 0x14 /* Line Status Register */
# define OFFSET_MSR 0x18 /* Modem Status Register */
# define OFFSET_SCR 0x1C /* SCR Scratch Register */
# define OFFSET_IER_SET 0x20 /* Set Interrupt Enable Register */
# define OFFSET_IER_CLEAR 0x24 /* Clear Interrupt Enable Register */
# define OFFSET_THR 0x28 /* Transmit Holding register */
# define OFFSET_RBR 0x2C /* Receive Buffer register */
#else /* BF533 style */
# define OFFSET_THR 0x00 /* Transmit Holding register */
# define OFFSET_RBR 0x00 /* Receive Buffer register */
# define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
# define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
# define OFFSET_IER 0x04 /* Interrupt Enable Register */
# define OFFSET_IIR 0x08 /* Interrupt Identification Register */
# define OFFSET_LCR 0x0C /* Line Control Register */
# define OFFSET_MCR 0x10 /* Modem Control Register */
# define OFFSET_LSR 0x14 /* Line Status Register */
# define OFFSET_MSR 0x18 /* Modem Status Register */
# define OFFSET_SCR 0x1C /* SCR Scratch Register */
# define OFFSET_GCTL 0x24 /* Global Control Register */
/* code should not need IIR, so force build error if they use it */
# undef OFFSET_IIR
#endif
/*
* All Blackfin system MMRs are padded to 32bits even if the register
* itself is only 16bits. So use a helper macro to streamline this.
*/
#define __BFP(m) u16 m; u16 __pad_##m
struct bfin_uart_regs {
#ifdef BFIN_UART_BF54X_STYLE
__BFP(dll);
__BFP(dlh);
__BFP(gctl);
__BFP(lcr);
__BFP(mcr);
__BFP(lsr);
__BFP(msr);
__BFP(scr);
__BFP(ier_set);
__BFP(ier_clear);
__BFP(thr);
__BFP(rbr);
#else
union {
u16 dll;
u16 thr;
const u16 rbr;
};
const u16 __pad0;
union {
u16 dlh;
u16 ier;
};
const u16 __pad1;
const __BFP(iir);
__BFP(lcr);
__BFP(mcr);
__BFP(lsr);
__BFP(msr);
__BFP(scr);
const u32 __pad2;
__BFP(gctl);
#endif
};
#undef __BFP
#ifndef port_membase
# define port_membase(p) (((struct bfin_serial_port *)(p))->port.membase)
#endif
#define UART_GET_CHAR(p) bfin_read16(port_membase(p) + OFFSET_RBR)
#define UART_GET_DLL(p) bfin_read16(port_membase(p) + OFFSET_DLL)
#define UART_GET_DLH(p) bfin_read16(port_membase(p) + OFFSET_DLH)
#define UART_GET_GCTL(p) bfin_read16(port_membase(p) + OFFSET_GCTL)
#define UART_GET_LCR(p) bfin_read16(port_membase(p) + OFFSET_LCR)
#define UART_GET_MCR(p) bfin_read16(port_membase(p) + OFFSET_MCR)
#define UART_GET_MSR(p) bfin_read16(port_membase(p) + OFFSET_MSR)
#define UART_PUT_CHAR(p, v) bfin_write16(port_membase(p) + OFFSET_THR, v)
#define UART_PUT_DLL(p, v) bfin_write16(port_membase(p) + OFFSET_DLL, v)
#define UART_PUT_DLH(p, v) bfin_write16(port_membase(p) + OFFSET_DLH, v)
#define UART_PUT_GCTL(p, v) bfin_write16(port_membase(p) + OFFSET_GCTL, v)
#define UART_PUT_LCR(p, v) bfin_write16(port_membase(p) + OFFSET_LCR, v)
#define UART_PUT_MCR(p, v) bfin_write16(port_membase(p) + OFFSET_MCR, v)
#ifdef BFIN_UART_BF54X_STYLE
#define UART_CLEAR_IER(p, v) bfin_write16(port_membase(p) + OFFSET_IER_CLEAR, v)
#define UART_GET_IER(p) bfin_read16(port_membase(p) + OFFSET_IER_SET)
#define UART_SET_IER(p, v) bfin_write16(port_membase(p) + OFFSET_IER_SET, v)
#define UART_CLEAR_DLAB(p) /* MMRs not muxed on BF54x */
#define UART_SET_DLAB(p) /* MMRs not muxed on BF54x */
#define UART_CLEAR_LSR(p) bfin_write16(port_membase(p) + OFFSET_LSR, -1)
#define UART_GET_LSR(p) bfin_read16(port_membase(p) + OFFSET_LSR)
#define UART_PUT_LSR(p, v) bfin_write16(port_membase(p) + OFFSET_LSR, v)
/* This handles hard CTS/RTS */
#define UART_CLEAR_SCTS(p) bfin_write16((port_membase(p) + OFFSET_MSR), SCTS)
#define UART_GET_CTS(x) (UART_GET_MSR(x) & CTS)
#define UART_DISABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) & ~(ARTS | MRTS))
#define UART_ENABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) | MRTS | ARTS)
#define UART_ENABLE_INTS(x, v) UART_SET_IER(x, v)
#define UART_DISABLE_INTS(x) UART_CLEAR_IER(x, 0xF)
#else /* BF533 style */
#define UART_CLEAR_IER(p, v) UART_PUT_IER(p, UART_GET_IER(p) & ~(v))
#define UART_GET_IER(p) bfin_read16(port_membase(p) + OFFSET_IER)
#define UART_PUT_IER(p, v) bfin_write16(port_membase(p) + OFFSET_IER, v)
#define UART_SET_IER(p, v) UART_PUT_IER(p, UART_GET_IER(p) | (v))
#define UART_CLEAR_DLAB(p) do { UART_PUT_LCR(p, UART_GET_LCR(p) & ~DLAB); SSYNC(); } while (0)
#define UART_SET_DLAB(p) do { UART_PUT_LCR(p, UART_GET_LCR(p) | DLAB); SSYNC(); } while (0)
#ifndef put_lsr_cache
# define put_lsr_cache(p, v) (((struct bfin_serial_port *)(p))->lsr = (v))
#endif
#ifndef get_lsr_cache
# define get_lsr_cache(p) (((struct bfin_serial_port *)(p))->lsr)
#endif
/* The hardware clears the LSR bits upon read, so we need to cache
* some of the more fun bits in software so they don't get lost
* when checking the LSR in other code paths (TX).
*/
static inline void UART_CLEAR_LSR(void *p)
{
put_lsr_cache(p, 0);
bfin_write16(port_membase(p) + OFFSET_LSR, -1);
}
static inline unsigned int UART_GET_LSR(void *p)
{
unsigned int lsr = bfin_read16(port_membase(p) + OFFSET_LSR);
put_lsr_cache(p, get_lsr_cache(p) | (lsr & (BI|FE|PE|OE)));
return lsr | get_lsr_cache(p);
}
static inline void UART_PUT_LSR(void *p, uint16_t val)
{
put_lsr_cache(p, get_lsr_cache(p) & ~val);
}
/* This handles soft CTS/RTS */
#define UART_GET_CTS(x) gpio_get_value((x)->cts_pin)
#define UART_DISABLE_RTS(x) gpio_set_value((x)->rts_pin, 1)
#define UART_ENABLE_RTS(x) gpio_set_value((x)->rts_pin, 0)
#define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v)
#define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0)
#endif
#ifndef BFIN_UART_TX_FIFO_SIZE
# define BFIN_UART_TX_FIFO_SIZE 2
#endif
#endif /* __BFIN_ASM_SERIAL_H__ */

14
arch/blackfin/mach-bf518/include/mach/bfin_serial.h Normal file
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@ -0,0 +1,14 @@
/*
* mach/bfin_serial.h - Blackfin UART/Serial definitions
*
* Copyright 2006-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __BFIN_MACH_SERIAL_H__
#define __BFIN_MACH_SERIAL_H__
#define BFIN_UART_NR_PORTS 2
#endif

73
arch/blackfin/mach-bf518/include/mach/bfin_serial_5xx.h
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@ -4,36 +4,9 @@
* Licensed under the GPL-2 or later
*/
#include <linux/serial.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#define UART_GET_CHAR(uart) bfin_read16(((uart)->port.membase + OFFSET_RBR))
#define UART_GET_DLL(uart) bfin_read16(((uart)->port.membase + OFFSET_DLL))
#define UART_GET_IER(uart) bfin_read16(((uart)->port.membase + OFFSET_IER))
#define UART_GET_DLH(uart) bfin_read16(((uart)->port.membase + OFFSET_DLH))
#define UART_GET_IIR(uart) bfin_read16(((uart)->port.membase + OFFSET_IIR))
#define UART_GET_LCR(uart) bfin_read16(((uart)->port.membase + OFFSET_LCR))
#define UART_GET_GCTL(uart) bfin_read16(((uart)->port.membase + OFFSET_GCTL))
#define UART_PUT_CHAR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_THR), v)
#define UART_PUT_DLL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLL), v)
#define UART_PUT_IER(uart, v) bfin_write16(((uart)->port.membase + OFFSET_IER), v)
#define UART_SET_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
#define UART_CLEAR_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
#define UART_PUT_DLH(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLH), v)
#define UART_PUT_LCR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_LCR), v)
#define UART_PUT_GCTL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_GCTL), v)
#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0)
#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0)
#define UART_GET_CTS(x) gpio_get_value(x->cts_pin)
#define UART_DISABLE_RTS(x) gpio_set_value(x->rts_pin, 1)
#define UART_ENABLE_RTS(x) gpio_set_value(x->rts_pin, 0)
#define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v)
#define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0)
#if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS)
# define CONFIG_SERIAL_BFIN_CTSRTS
@ -54,50 +27,6 @@
# endif
#endif
#define BFIN_UART_TX_FIFO_SIZE 2
/*
* The pin configuration is different from schematic
*/
struct bfin_serial_port {
struct uart_port port;
unsigned int old_status;
int status_irq;
unsigned int lsr;
#ifdef CONFIG_SERIAL_BFIN_DMA
int tx_done;
int tx_count;
struct circ_buf rx_dma_buf;
struct timer_list rx_dma_timer;
int rx_dma_nrows;
unsigned int tx_dma_channel;
unsigned int rx_dma_channel;
struct work_struct tx_dma_workqueue;
#endif
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
struct timer_list cts_timer;
int cts_pin;
int rts_pin;
#endif
};
/* The hardware clears the LSR bits upon read, so we need to cache
* some of the more fun bits in software so they don't get lost
* when checking the LSR in other code paths (TX).
*/
static inline unsigned int UART_GET_LSR(struct bfin_serial_port *uart)
{
unsigned int lsr = bfin_read16(uart->port.membase + OFFSET_LSR);
uart->lsr |= (lsr & (BI|FE|PE|OE));
return lsr | uart->lsr;
}
static inline void UART_CLEAR_LSR(struct bfin_serial_port *uart)
{
uart->lsr = 0;
bfin_write16(uart->port.membase + OFFSET_LSR, -1);
}
struct bfin_serial_res {
unsigned long uart_base_addr;
int uart_irq;
@ -146,3 +75,5 @@ struct bfin_serial_res bfin_serial_resource[] = {
};
#define DRIVER_NAME "bfin-uart"
#include <asm/bfin_serial.h>

15
arch/blackfin/mach-bf518/include/mach/blackfin.h
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@ -43,19 +43,4 @@
#endif
#endif
#define BFIN_UART_NR_PORTS 2
#define OFFSET_THR 0x00 /* Transmit Holding register */
#define OFFSET_RBR 0x00 /* Receive Buffer register */
#define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
#define OFFSET_IER 0x04 /* Interrupt Enable Register */
#define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
#define OFFSET_IIR 0x08 /* Interrupt Identification Register */
#define OFFSET_LCR 0x0C /* Line Control Register */
#define OFFSET_MCR 0x10 /* Modem Control Register */
#define OFFSET_LSR 0x14 /* Line Status Register */
#define OFFSET_MSR 0x18 /* Modem Status Register */
#define OFFSET_SCR 0x1C /* SCR Scratch Register */
#define OFFSET_GCTL 0x24 /* Global Control Register */
#endif

45
arch/blackfin/mach-bf518/include/mach/defBF51x_base.h
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@ -703,51 +703,6 @@
#define IWR_ENABLE(x) (1 << ((x)&0x1F)) /* Wakeup Enable Peripheral #x */
#define IWR_DISABLE(x) (0xFFFFFFFF ^ (1 << ((x)&0x1F))) /* Wakeup Disable Peripheral #x */
/* ************** UART CONTROLLER MASKS *************************/
/* UARTx_LCR Masks */
#define WLS(x) (((x)-5) & 0x03) /* Word Length Select */
#define STB 0x04 /* Stop Bits */
#define PEN 0x08 /* Parity Enable */
#define EPS 0x10 /* Even Parity Select */
#define STP 0x20 /* Stick Parity */
#define SB 0x40 /* Set Break */
#define DLAB 0x80 /* Divisor Latch Access */
/* UARTx_MCR Mask */
#define LOOP_ENA 0x10 /* Loopback Mode Enable */
#define LOOP_ENA_P 0x04
/* UARTx_LSR Masks */
#define DR 0x01 /* Data Ready */
#define OE 0x02 /* Overrun Error */
#define PE 0x04 /* Parity Error */
#define FE 0x08 /* Framing Error */
#define BI 0x10 /* Break Interrupt */
#define THRE 0x20 /* THR Empty */
#define TEMT 0x40 /* TSR and UART_THR Empty */
/* UARTx_IER Masks */
#define ERBFI 0x01 /* Enable Receive Buffer Full Interrupt */
#define ETBEI 0x02 /* Enable Transmit Buffer Empty Interrupt */
#define ELSI 0x04 /* Enable RX Status Interrupt */
/* UARTx_IIR Masks */
#define NINT 0x01 /* Pending Interrupt */
#define IIR_TX_READY 0x02 /* UART_THR empty */
#define IIR_RX_READY 0x04 /* Receive data ready */
#define IIR_LINE_CHANGE 0x06 /* Receive line status */
#define IIR_STATUS 0x06 /* Highest Priority Pending Interrupt */
/* UARTx_GCTL Masks */
#define UCEN 0x01 /* Enable UARTx Clocks */
#define IREN 0x02 /* Enable IrDA Mode */
#define TPOLC 0x04 /* IrDA TX Polarity Change */
#define RPOLC 0x08 /* IrDA RX Polarity Change */
#define FPE 0x10 /* Force Parity Error On Transmit */
#define FFE 0x20 /* Force Framing Error On Transmit */
/* **************** GENERAL PURPOSE TIMER MASKS **********************/
/* TIMER_ENABLE Masks */
#define TIMEN0 0x0001 /* Enable Timer 0 */

14
arch/blackfin/mach-bf527/include/mach/bfin_serial.h Normal file
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@ -0,0 +1,14 @@
/*
* mach/bfin_serial.h - Blackfin UART/Serial definitions
*
* Copyright 2006-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __BFIN_MACH_SERIAL_H__
#define __BFIN_MACH_SERIAL_H__
#define BFIN_UART_NR_PORTS 2
#endif

73
arch/blackfin/mach-bf527/include/mach/bfin_serial_5xx.h
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@ -4,36 +4,9 @@
* Licensed under the GPL-2 or later
*/
#include <linux/serial.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#define UART_GET_CHAR(uart) bfin_read16(((uart)->port.membase + OFFSET_RBR))
#define UART_GET_DLL(uart) bfin_read16(((uart)->port.membase + OFFSET_DLL))
#define UART_GET_IER(uart) bfin_read16(((uart)->port.membase + OFFSET_IER))
#define UART_GET_DLH(uart) bfin_read16(((uart)->port.membase + OFFSET_DLH))
#define UART_GET_IIR(uart) bfin_read16(((uart)->port.membase + OFFSET_IIR))
#define UART_GET_LCR(uart) bfin_read16(((uart)->port.membase + OFFSET_LCR))
#define UART_GET_GCTL(uart) bfin_read16(((uart)->port.membase + OFFSET_GCTL))
#define UART_PUT_CHAR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_THR), v)
#define UART_PUT_DLL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLL), v)
#define UART_PUT_IER(uart, v) bfin_write16(((uart)->port.membase + OFFSET_IER), v)
#define UART_SET_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
#define UART_CLEAR_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
#define UART_PUT_DLH(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLH), v)
#define UART_PUT_LCR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_LCR), v)
#define UART_PUT_GCTL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_GCTL), v)
#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0)
#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0)
#define UART_GET_CTS(x) gpio_get_value(x->cts_pin)
#define UART_DISABLE_RTS(x) gpio_set_value(x->rts_pin, 1)
#define UART_ENABLE_RTS(x) gpio_set_value(x->rts_pin, 0)
#define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v)
#define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0)
#if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS)
# define CONFIG_SERIAL_BFIN_CTSRTS
@ -54,50 +27,6 @@
# endif
#endif
#define BFIN_UART_TX_FIFO_SIZE 2
/*
* The pin configuration is different from schematic
*/
struct bfin_serial_port {
struct uart_port port;
unsigned int old_status;
int status_irq;
unsigned int lsr;
#ifdef CONFIG_SERIAL_BFIN_DMA
int tx_done;
int tx_count;
struct circ_buf rx_dma_buf;
struct timer_list rx_dma_timer;
int rx_dma_nrows;
unsigned int tx_dma_channel;
unsigned int rx_dma_channel;
struct work_struct tx_dma_workqueue;
#endif
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
struct timer_list cts_timer;
int cts_pin;
int rts_pin;
#endif
};
/* The hardware clears the LSR bits upon read, so we need to cache
* some of the more fun bits in software so they don't get lost
* when checking the LSR in other code paths (TX).
*/
static inline unsigned int UART_GET_LSR(struct bfin_serial_port *uart)
{
unsigned int lsr = bfin_read16(uart->port.membase + OFFSET_LSR);
uart->lsr |= (lsr & (BI|FE|PE|OE));
return lsr | uart->lsr;
}
static inline void UART_CLEAR_LSR(struct bfin_serial_port *uart)
{
uart->lsr = 0;
bfin_write16(uart->port.membase + OFFSET_LSR, -1);
}
struct bfin_serial_res {
unsigned long uart_base_addr;
int uart_irq;
@ -146,3 +75,5 @@ struct bfin_serial_res bfin_serial_resource[] = {
};
#define DRIVER_NAME "bfin-uart"
#include <asm/bfin_serial.h>

15
arch/blackfin/mach-bf527/include/mach/blackfin.h
View File

@ -31,19 +31,4 @@
#endif
#endif
#define BFIN_UART_NR_PORTS 2
#define OFFSET_THR 0x00 /* Transmit Holding register */
#define OFFSET_RBR 0x00 /* Receive Buffer register */
#define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
#define OFFSET_IER 0x04 /* Interrupt Enable Register */
#define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
#define OFFSET_IIR 0x08 /* Interrupt Identification Register */
#define OFFSET_LCR 0x0C /* Line Control Register */
#define OFFSET_MCR 0x10 /* Modem Control Register */
#define OFFSET_LSR 0x14 /* Line Status Register */
#define OFFSET_MSR 0x18 /* Modem Status Register */
#define OFFSET_SCR 0x1C /* SCR Scratch Register */
#define OFFSET_GCTL 0x24 /* Global Control Register */
#endif

45
arch/blackfin/mach-bf527/include/mach/defBF52x_base.h
View File

@ -704,51 +704,6 @@
#define IWR_ENABLE(x) (1 << ((x)&0x1F)) /* Wakeup Enable Peripheral #x */
#define IWR_DISABLE(x) (0xFFFFFFFF ^ (1 << ((x)&0x1F))) /* Wakeup Disable Peripheral #x */
/* ************** UART CONTROLLER MASKS *************************/
/* UARTx_LCR Masks */
#define WLS(x) (((x)-5) & 0x03) /* Word Length Select */
#define STB 0x04 /* Stop Bits */
#define PEN 0x08 /* Parity Enable */
#define EPS 0x10 /* Even Parity Select */
#define STP 0x20 /* Stick Parity */
#define SB 0x40 /* Set Break */
#define DLAB 0x80 /* Divisor Latch Access */
/* UARTx_MCR Mask */
#define LOOP_ENA 0x10 /* Loopback Mode Enable */
#define LOOP_ENA_P 0x04
/* UARTx_LSR Masks */
#define DR 0x01 /* Data Ready */
#define OE 0x02 /* Overrun Error */
#define PE 0x04 /* Parity Error */
#define FE 0x08 /* Framing Error */
#define BI 0x10 /* Break Interrupt */
#define THRE 0x20 /* THR Empty */
#define TEMT 0x40 /* TSR and UART_THR Empty */
/* UARTx_IER Masks */
#define ERBFI 0x01 /* Enable Receive Buffer Full Interrupt */
#define ETBEI 0x02 /* Enable Transmit Buffer Empty Interrupt */
#define ELSI 0x04 /* Enable RX Status Interrupt */
/* UARTx_IIR Masks */
#define NINT 0x01 /* Pending Interrupt */
#define IIR_TX_READY 0x02 /* UART_THR empty */
#define IIR_RX_READY 0x04 /* Receive data ready */
#define IIR_LINE_CHANGE 0x06 /* Receive line status */
#define IIR_STATUS 0x06 /* Highest Priority Pending Interrupt */
/* UARTx_GCTL Masks */
#define UCEN 0x01 /* Enable UARTx Clocks */
#define IREN 0x02 /* Enable IrDA Mode */
#define TPOLC 0x04 /* IrDA TX Polarity Change */
#define RPOLC 0x08 /* IrDA RX Polarity Change */
#define FPE 0x10 /* Force Parity Error On Transmit */
#define FFE 0x20 /* Force Framing Error On Transmit */
/* **************** GENERAL PURPOSE TIMER MASKS **********************/
/* TIMER_ENABLE Masks */
#define TIMEN0 0x0001 /* Enable Timer 0 */

14
arch/blackfin/mach-bf533/include/mach/bfin_serial.h Normal file
View File

@ -0,0 +1,14 @@
/*
* mach/bfin_serial.h - Blackfin UART/Serial definitions
*
* Copyright 2006-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __BFIN_MACH_SERIAL_H__
#define __BFIN_MACH_SERIAL_H__
#define BFIN_UART_NR_PORTS 1
#endif

74
arch/blackfin/mach-bf533/include/mach/bfin_serial_5xx.h
View File

@ -4,36 +4,9 @@
* Licensed under the GPL-2 or later
*/
#include <linux/serial.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#define UART_GET_CHAR(uart) bfin_read16(((uart)->port.membase + OFFSET_RBR))
#define UART_GET_DLL(uart) bfin_read16(((uart)->port.membase + OFFSET_DLL))
#define UART_GET_IER(uart) bfin_read16(((uart)->port.membase + OFFSET_IER))
#define UART_GET_DLH(uart) bfin_read16(((uart)->port.membase + OFFSET_DLH))
#define UART_GET_IIR(uart) bfin_read16(((uart)->port.membase + OFFSET_IIR))
#define UART_GET_LCR(uart) bfin_read16(((uart)->port.membase + OFFSET_LCR))
#define UART_GET_GCTL(uart) bfin_read16(((uart)->port.membase + OFFSET_GCTL))
#define UART_PUT_CHAR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_THR),v)
#define UART_PUT_DLL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLL),v)
#define UART_PUT_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER),v)
#define UART_SET_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
#define UART_CLEAR_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
#define UART_PUT_DLH(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLH),v)
#define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v)
#define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v)
#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0)
#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0)
#define UART_GET_CTS(x) gpio_get_value(x->cts_pin)
#define UART_DISABLE_RTS(x) gpio_set_value(x->rts_pin, 1)
#define UART_ENABLE_RTS(x) gpio_set_value(x->rts_pin, 0)
#define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v)
#define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0)
#ifdef CONFIG_BFIN_UART0_CTSRTS
# define CONFIG_SERIAL_BFIN_CTSRTS
# ifndef CONFIG_UART0_CTS_PIN
@ -44,51 +17,6 @@
# endif
#endif
#define BFIN_UART_TX_FIFO_SIZE 2
struct bfin_serial_port {
struct uart_port port;
unsigned int old_status;
int status_irq;
unsigned int lsr;
#ifdef CONFIG_SERIAL_BFIN_DMA
int tx_done;
int tx_count;
struct circ_buf rx_dma_buf;
struct timer_list rx_dma_timer;
int rx_dma_nrows;
unsigned int tx_dma_channel;
unsigned int rx_dma_channel;
struct work_struct tx_dma_workqueue;
#else
# if ANOMALY_05000363
unsigned int anomaly_threshold;
# endif
#endif
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
struct timer_list cts_timer;
int cts_pin;
int rts_pin;
#endif
};
/* The hardware clears the LSR bits upon read, so we need to cache
* some of the more fun bits in software so they don't get lost
* when checking the LSR in other code paths (TX).
*/
static inline unsigned int UART_GET_LSR(struct bfin_serial_port *uart)
{
unsigned int lsr = bfin_read16(uart->port.membase + OFFSET_LSR);
uart->lsr |= (lsr & (BI|FE|PE|OE));
return lsr | uart->lsr;
}
static inline void UART_CLEAR_LSR(struct bfin_serial_port *uart)
{
uart->lsr = 0;
bfin_write16(uart->port.membase + OFFSET_LSR, -1);
}
struct bfin_serial_res {
unsigned long uart_base_addr;
int uart_irq;
@ -120,3 +48,5 @@ struct bfin_serial_res bfin_serial_resource[] = {
};
#define DRIVER_NAME "bfin-uart"
#include <asm/bfin_serial.h>

15
arch/blackfin/mach-bf533/include/mach/blackfin.h
View File

@ -17,19 +17,4 @@
#include "cdefBF532.h"
#endif
#define BFIN_UART_NR_PORTS 1
#define OFFSET_THR 0x00 /* Transmit Holding register */
#define OFFSET_RBR 0x00 /* Receive Buffer register */
#define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
#define OFFSET_IER 0x04 /* Interrupt Enable Register */
#define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
#define OFFSET_IIR 0x08 /* Interrupt Identification Register */
#define OFFSET_LCR 0x0C /* Line Control Register */
#define OFFSET_MCR 0x10 /* Modem Control Register */
#define OFFSET_LSR 0x14 /* Line Status Register */
#define OFFSET_MSR 0x18 /* Modem Status Register */
#define OFFSET_SCR 0x1C /* SCR Scratch Register */
#define OFFSET_GCTL 0x24 /* Global Control Register */
#endif /* _MACH_BLACKFIN_H_ */

77
arch/blackfin/mach-bf533/include/mach/defBF532.h
View File

@ -432,83 +432,6 @@
#define IWR_ENABLE(x) (1 << (x)) /* Wakeup Enable Peripheral #x */
#define IWR_DISABLE(x) (0xFFFFFFFF ^ (1 << (x))) /* Wakeup Disable Peripheral #x */
/* ***************************** UART CONTROLLER MASKS ********************** */
/* UART_LCR Register */
#define DLAB 0x80
#define SB 0x40
#define STP 0x20
#define EPS 0x10
#define PEN 0x08
#define STB 0x04
#define WLS(x) ((x-5) & 0x03)
#define DLAB_P 0x07
#define SB_P 0x06
#define STP_P 0x05
#define EPS_P 0x04
#define PEN_P 0x03
#define STB_P 0x02
#define WLS_P1 0x01
#define WLS_P0 0x00
/* UART_MCR Register */
#define LOOP_ENA 0x10
#define LOOP_ENA_P 0x04
/* UART_LSR Register */
#define TEMT 0x40
#define THRE 0x20
#define BI 0x10
#define FE 0x08
#define PE 0x04
#define OE 0x02
#define DR 0x01
#define TEMP_P 0x06
#define THRE_P 0x05
#define BI_P 0x04
#define FE_P 0x03
#define PE_P 0x02
#define OE_P 0x01
#define DR_P 0x00
/* UART_IER Register */
#define ELSI 0x04
#define ETBEI 0x02
#define ERBFI 0x01
#define ELSI_P 0x02
#define ETBEI_P 0x01
#define ERBFI_P 0x00
/* UART_IIR Register */
#define STATUS(x) ((x << 1) & 0x06)
#define NINT 0x01
#define STATUS_P1 0x02
#define STATUS_P0 0x01
#define NINT_P 0x00
#define IIR_TX_READY 0x02 /* UART_THR empty */
#define IIR_RX_READY 0x04 /* Receive data ready */
#define IIR_LINE_CHANGE 0x06 /* Receive line status */
#define IIR_STATUS 0x06
/* UART_GCTL Register */
#define FFE 0x20
#define FPE 0x10
#define RPOLC 0x08
#define TPOLC 0x04
#define IREN 0x02
#define UCEN 0x01
#define FFE_P 0x05
#define FPE_P 0x04
#define RPOLC_P 0x03
#define TPOLC_P 0x02
#define IREN_P 0x01
#define UCEN_P 0x00
/* ********* PARALLEL PERIPHERAL INTERFACE (PPI) MASKS **************** */
/* PPI_CONTROL Masks */

14
arch/blackfin/mach-bf537/include/mach/bfin_serial.h Normal file
View File

@ -0,0 +1,14 @@
/*
* mach/bfin_serial.h - Blackfin UART/Serial definitions
*
* Copyright 2006-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __BFIN_MACH_SERIAL_H__
#define __BFIN_MACH_SERIAL_H__
#define BFIN_UART_NR_PORTS 2
#endif

72
arch/blackfin/mach-bf537/include/mach/bfin_serial_5xx.h
View File

@ -4,36 +4,9 @@
* Licensed under the GPL-2 or later
*/
#include <linux/serial.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#define UART_GET_CHAR(uart) bfin_read16(((uart)->port.membase + OFFSET_RBR))
#define UART_GET_DLL(uart) bfin_read16(((uart)->port.membase + OFFSET_DLL))
#define UART_GET_IER(uart) bfin_read16(((uart)->port.membase + OFFSET_IER))
#define UART_GET_DLH(uart) bfin_read16(((uart)->port.membase + OFFSET_DLH))
#define UART_GET_IIR(uart) bfin_read16(((uart)->port.membase + OFFSET_IIR))
#define UART_GET_LCR(uart) bfin_read16(((uart)->port.membase + OFFSET_LCR))
#define UART_GET_GCTL(uart) bfin_read16(((uart)->port.membase + OFFSET_GCTL))
#define UART_PUT_CHAR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_THR),v)
#define UART_PUT_DLL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLL),v)
#define UART_PUT_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER),v)
#define UART_SET_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
#define UART_CLEAR_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
#define UART_PUT_DLH(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLH),v)
#define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v)
#define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v)
#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0)
#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0)
#define UART_GET_CTS(x) gpio_get_value(x->cts_pin)
#define UART_DISABLE_RTS(x) gpio_set_value(x->rts_pin, 1)
#define UART_ENABLE_RTS(x) gpio_set_value(x->rts_pin, 0)
#define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v)
#define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0)
#if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS)
# define CONFIG_SERIAL_BFIN_CTSRTS
@ -54,49 +27,6 @@
# endif
#endif
#define BFIN_UART_TX_FIFO_SIZE 2
/*
* The pin configuration is different from schematic
*/
struct bfin_serial_port {
struct uart_port port;
unsigned int old_status;
int status_irq;
unsigned int lsr;
#ifdef CONFIG_SERIAL_BFIN_DMA
int tx_done;
int tx_count;
struct circ_buf rx_dma_buf;
struct timer_list rx_dma_timer;
int rx_dma_nrows;
unsigned int tx_dma_channel;
unsigned int rx_dma_channel;
struct work_struct tx_dma_workqueue;
#endif
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
int cts_pin;
int rts_pin;
#endif
};
/* The hardware clears the LSR bits upon read, so we need to cache
* some of the more fun bits in software so they don't get lost
* when checking the LSR in other code paths (TX).
*/
static inline unsigned int UART_GET_LSR(struct bfin_serial_port *uart)
{
unsigned int lsr = bfin_read16(uart->port.membase + OFFSET_LSR);
uart->lsr |= (lsr & (BI|FE|PE|OE));
return lsr | uart->lsr;
}
static inline void UART_CLEAR_LSR(struct bfin_serial_port *uart)
{
uart->lsr = 0;
bfin_write16(uart->port.membase + OFFSET_LSR, -1);
}
struct bfin_serial_res {
unsigned long uart_base_addr;
int uart_irq;
@ -145,3 +75,5 @@ struct bfin_serial_res bfin_serial_resource[] = {
};
#define DRIVER_NAME "bfin-uart"
#include <asm/bfin_serial.h>

15
arch/blackfin/mach-bf537/include/mach/blackfin.h
View File

@ -25,19 +25,4 @@
#endif
#endif
#define BFIN_UART_NR_PORTS 2
#define OFFSET_THR 0x00 /* Transmit Holding register */
#define OFFSET_RBR 0x00 /* Receive Buffer register */
#define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
#define OFFSET_IER 0x04 /* Interrupt Enable Register */
#define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
#define OFFSET_IIR 0x08 /* Interrupt Identification Register */
#define OFFSET_LCR 0x0C /* Line Control Register */
#define OFFSET_MCR 0x10 /* Modem Control Register */
#define OFFSET_LSR 0x14 /* Line Status Register */
#define OFFSET_MSR 0x18 /* Modem Status Register */
#define OFFSET_SCR 0x1C /* SCR Scratch Register */
#define OFFSET_GCTL 0x24 /* Global Control Register */
#endif

42
arch/blackfin/mach-bf537/include/mach/defBF534.h
View File

@ -1029,48 +1029,6 @@
#define IWR_ENABLE(x) (1 << ((x)&0x1F)) /* Wakeup Enable Peripheral #x */
#define IWR_DISABLE(x) (0xFFFFFFFF ^ (1 << ((x)&0x1F))) /* Wakeup Disable Peripheral #x */
/* ************** UART CONTROLLER MASKS *************************/
/* UARTx_LCR Masks */
#define WLS(x) (((x)-5) & 0x03) /* Word Length Select */
#define STB 0x04 /* Stop Bits */
#define PEN 0x08 /* Parity Enable */
#define EPS 0x10 /* Even Parity Select */
#define STP 0x20 /* Stick Parity */
#define SB 0x40 /* Set Break */
#define DLAB 0x80 /* Divisor Latch Access */
/* UARTx_MCR Mask */
#define LOOP_ENA 0x10 /* Loopback Mode Enable */
#define LOOP_ENA_P 0x04
/* UARTx_LSR Masks */
#define DR 0x01 /* Data Ready */
#define OE 0x02 /* Overrun Error */
#define PE 0x04 /* Parity Error */
#define FE 0x08 /* Framing Error */
#define BI 0x10 /* Break Interrupt */
#define THRE 0x20 /* THR Empty */
#define TEMT 0x40 /* TSR and UART_THR Empty */
/* UARTx_IER Masks */
#define ERBFI 0x01 /* Enable Receive Buffer Full Interrupt */
#define ETBEI 0x02 /* Enable Transmit Buffer Empty Interrupt */
#define ELSI 0x04 /* Enable RX Status Interrupt */
/* UARTx_IIR Masks */
#define NINT 0x01 /* Pending Interrupt */
#define IIR_TX_READY 0x02 /* UART_THR empty */
#define IIR_RX_READY 0x04 /* Receive data ready */
#define IIR_LINE_CHANGE 0x06 /* Receive line status */
#define IIR_STATUS 0x06
/* UARTx_GCTL Masks */
#define UCEN 0x01 /* Enable UARTx Clocks */
#define IREN 0x02 /* Enable IrDA Mode */
#define TPOLC 0x04 /* IrDA TX Polarity Change */
#define RPOLC 0x08 /* IrDA RX Polarity Change */
#define FPE 0x10 /* Force Parity Error On Transmit */
#define FFE 0x20 /* Force Framing Error On Transmit */
/* **************** GENERAL PURPOSE TIMER MASKS **********************/
/* TIMER_ENABLE Masks */
#define TIMEN0 0x0001 /* Enable Timer 0 */

14
arch/blackfin/mach-bf538/include/mach/bfin_serial.h Normal file
View File

@ -0,0 +1,14 @@
/*
* mach/bfin_serial.h - Blackfin UART/Serial definitions
*
* Copyright 2006-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __BFIN_MACH_SERIAL_H__
#define __BFIN_MACH_SERIAL_H__
#define BFIN_UART_NR_PORTS 3
#endif

73
arch/blackfin/mach-bf538/include/mach/bfin_serial_5xx.h
View File

@ -4,36 +4,9 @@
* Licensed under the GPL-2 or later.
*/
#include <linux/serial.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#define UART_GET_CHAR(uart) bfin_read16(((uart)->port.membase + OFFSET_RBR))
#define UART_GET_DLL(uart) bfin_read16(((uart)->port.membase + OFFSET_DLL))
#define UART_GET_IER(uart) bfin_read16(((uart)->port.membase + OFFSET_IER))
#define UART_GET_DLH(uart) bfin_read16(((uart)->port.membase + OFFSET_DLH))
#define UART_GET_IIR(uart) bfin_read16(((uart)->port.membase + OFFSET_IIR))
#define UART_GET_LCR(uart) bfin_read16(((uart)->port.membase + OFFSET_LCR))
#define UART_GET_GCTL(uart) bfin_read16(((uart)->port.membase + OFFSET_GCTL))
#define UART_PUT_CHAR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_THR), v)
#define UART_PUT_DLL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLL), v)
#define UART_PUT_IER(uart, v) bfin_write16(((uart)->port.membase + OFFSET_IER), v)
#define UART_SET_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
#define UART_CLEAR_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
#define UART_PUT_DLH(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLH), v)
#define UART_PUT_LCR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_LCR), v)
#define UART_PUT_GCTL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_GCTL), v)
#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0)
#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0)
#define UART_GET_CTS(x) gpio_get_value(x->cts_pin)
#define UART_DISABLE_RTS(x) gpio_set_value(x->rts_pin, 1)
#define UART_ENABLE_RTS(x) gpio_set_value(x->rts_pin, 0)
#define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v)
#define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0)
#if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS)
# define CONFIG_SERIAL_BFIN_CTSRTS
@ -54,50 +27,6 @@
# endif
#endif
#define BFIN_UART_TX_FIFO_SIZE 2
/*
* The pin configuration is different from schematic
*/
struct bfin_serial_port {
struct uart_port port;
unsigned int old_status;
int status_irq;
unsigned int lsr;
#ifdef CONFIG_SERIAL_BFIN_DMA
int tx_done;
int tx_count;
struct circ_buf rx_dma_buf;
struct timer_list rx_dma_timer;
int rx_dma_nrows;
unsigned int tx_dma_channel;
unsigned int rx_dma_channel;
struct work_struct tx_dma_workqueue;
#endif
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
struct timer_list cts_timer;
int cts_pin;
int rts_pin;
#endif
};
/* The hardware clears the LSR bits upon read, so we need to cache
* some of the more fun bits in software so they don't get lost
* when checking the LSR in other code paths (TX).
*/
static inline unsigned int UART_GET_LSR(struct bfin_serial_port *uart)
{
unsigned int lsr = bfin_read16(uart->port.membase + OFFSET_LSR);
uart->lsr |= (lsr & (BI|FE|PE|OE));
return lsr | uart->lsr;
}
static inline void UART_CLEAR_LSR(struct bfin_serial_port *uart)
{
uart->lsr = 0;
bfin_write16(uart->port.membase + OFFSET_LSR, -1);
}
struct bfin_serial_res {
unsigned long uart_base_addr;
int uart_irq;
@ -160,3 +89,5 @@ struct bfin_serial_res bfin_serial_resource[] = {
};
#define DRIVER_NAME "bfin-uart"
#include <asm/bfin_serial.h>

15
arch/blackfin/mach-bf538/include/mach/blackfin.h
View File

@ -22,19 +22,4 @@
#endif
#endif
#define BFIN_UART_NR_PORTS 3
#define OFFSET_THR 0x00 /* Transmit Holding register */
#define OFFSET_RBR 0x00 /* Receive Buffer register */
#define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
#define OFFSET_IER 0x04 /* Interrupt Enable Register */
#define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
#define OFFSET_IIR 0x08 /* Interrupt Identification Register */
#define OFFSET_LCR 0x0C /* Line Control Register */
#define OFFSET_MCR 0x10 /* Modem Control Register */
#define OFFSET_LSR 0x14 /* Line Status Register */
#define OFFSET_MSR 0x18 /* Modem Status Register */
#define OFFSET_SCR 0x1C /* SCR Scratch Register */
#define OFFSET_GCTL 0x24 /* Global Control Register */
#endif

77
arch/blackfin/mach-bf538/include/mach/defBF539.h
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@ -1534,83 +1534,6 @@
#define IWR_DISABLE(x) (0xFFFFFFFF ^ (1 << ((x)&0x1F))) /* Wakeup Disable Peripheral #x */
#endif /* _MISRA_RULES */
/* ***************************** UART CONTROLLER MASKS ********************** */
/* UARTx_LCR Register */
#ifdef _MISRA_RULES
#define WLS(x) (((x)-5u) & 0x03u) /* Word Length Select */
#else
#define WLS(x) (((x)-5) & 0x03) /* Word Length Select */
#endif /* _MISRA_RULES */
#define STB 0x04 /* Stop Bits */
#define PEN 0x08 /* Parity Enable */
#define EPS 0x10 /* Even Parity Select */
#define STP 0x20 /* Stick Parity */
#define SB 0x40 /* Set Break */
#define DLAB 0x80 /* Divisor Latch Access */
#define DLAB_P 0x07
#define SB_P 0x06
#define STP_P 0x05
#define EPS_P 0x04
#define PEN_P 0x03
#define STB_P 0x02
#define WLS_P1 0x01
#define WLS_P0 0x00
/* UARTx_MCR Register */
#define LOOP_ENA 0x10 /* Loopback Mode Enable */
#define LOOP_ENA_P 0x04
/* Deprecated UARTx_MCR Mask */
/* UARTx_LSR Register */
#define DR 0x01 /* Data Ready */
#define OE 0x02 /* Overrun Error */
#define PE 0x04 /* Parity Error */
#define FE 0x08 /* Framing Error */
#define BI 0x10 /* Break Interrupt */
#define THRE 0x20 /* THR Empty */
#define TEMT 0x40 /* TSR and UART_THR Empty */
#define TEMP_P 0x06
#define THRE_P 0x05
#define BI_P 0x04
#define FE_P 0x03
#define PE_P 0x02
#define OE_P 0x01
#define DR_P 0x00
/* UARTx_IER Register */
#define ERBFI 0x01 /* Enable Receive Buffer Full Interrupt */
#define ETBEI 0x02 /* Enable Transmit Buffer Empty Interrupt */
#define ELSI 0x04 /* Enable RX Status Interrupt */
#define ELSI_P 0x02
#define ETBEI_P 0x01
#define ERBFI_P 0x00
/* UARTx_IIR Register */
#define NINT 0x01
#define STATUS_P1 0x02
#define STATUS_P0 0x01
#define NINT_P 0x00
/* UARTx_GCTL Register */
#define UCEN 0x01 /* Enable UARTx Clocks */
#define IREN 0x02 /* Enable IrDA Mode */
#define TPOLC 0x04 /* IrDA TX Polarity Change */
#define RPOLC 0x08 /* IrDA RX Polarity Change */
#define FPE 0x10 /* Force Parity Error On Transmit */
#define FFE 0x20 /* Force Framing Error On Transmit */
#define FFE_P 0x05
#define FPE_P 0x04
#define RPOLC_P 0x03
#define TPOLC_P 0x02
#define IREN_P 0x01
#define UCEN_P 0x00
/* ********* PARALLEL PERIPHERAL INTERFACE (PPI) MASKS **************** */
/* PPI_CONTROL Masks */
#define PORT_EN 0x0001 /* PPI Port Enable */

16
arch/blackfin/mach-bf548/include/mach/bfin_serial.h Normal file
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@ -0,0 +1,16 @@
/*
* mach/bfin_serial.h - Blackfin UART/Serial definitions
*
* Copyright 2006-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __BFIN_MACH_SERIAL_H__
#define __BFIN_MACH_SERIAL_H__
#define BFIN_UART_NR_PORTS 4
#define BFIN_UART_BF54X_STYLE
#endif

60
arch/blackfin/mach-bf548/include/mach/bfin_serial_5xx.h
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@ -4,72 +4,14 @@
* Licensed under the GPL-2 or later.
*/
#include <linux/serial.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#define UART_GET_CHAR(uart) bfin_read16(((uart)->port.membase + OFFSET_RBR))
#define UART_GET_DLL(uart) bfin_read16(((uart)->port.membase + OFFSET_DLL))
#define UART_GET_DLH(uart) bfin_read16(((uart)->port.membase + OFFSET_DLH))
#define UART_GET_IER(uart) bfin_read16(((uart)->port.membase + OFFSET_IER_SET))
#define UART_GET_LCR(uart) bfin_read16(((uart)->port.membase + OFFSET_LCR))
#define UART_GET_LSR(uart) bfin_read16(((uart)->port.membase + OFFSET_LSR))
#define UART_GET_GCTL(uart) bfin_read16(((uart)->port.membase + OFFSET_GCTL))
#define UART_GET_MSR(uart) bfin_read16(((uart)->port.membase + OFFSET_MSR))
#define UART_GET_MCR(uart) bfin_read16(((uart)->port.membase + OFFSET_MCR))
#define UART_PUT_CHAR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_THR),v)
#define UART_PUT_DLL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLL),v)
#define UART_SET_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER_SET),v)
#define UART_CLEAR_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER_CLEAR),v)
#define UART_PUT_DLH(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLH),v)
#define UART_PUT_LSR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LSR),v)
#define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v)
#define UART_CLEAR_LSR(uart) bfin_write16(((uart)->port.membase + OFFSET_LSR), -1)
#define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v)
#define UART_PUT_MCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_MCR),v)
#define UART_CLEAR_SCTS(uart) bfin_write16(((uart)->port.membase + OFFSET_MSR),SCTS)
#define UART_SET_DLAB(uart) /* MMRs not muxed on BF54x */
#define UART_CLEAR_DLAB(uart) /* MMRs not muxed on BF54x */
#define UART_GET_CTS(x) (UART_GET_MSR(x) & CTS)
#define UART_DISABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) & ~(ARTS|MRTS))
#define UART_ENABLE_RTS(x) UART_PUT_MCR(x, UART_GET_MCR(x) | MRTS | ARTS)
#define UART_ENABLE_INTS(x, v) UART_SET_IER(x, v)
#define UART_DISABLE_INTS(x) UART_CLEAR_IER(x, 0xF)
#if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS) || \
defined(CONFIG_BFIN_UART2_CTSRTS) || defined(CONFIG_BFIN_UART3_CTSRTS)
# define CONFIG_SERIAL_BFIN_HARD_CTSRTS
#endif
#define BFIN_UART_TX_FIFO_SIZE 2
/*
* The pin configuration is different from schematic
*/
struct bfin_serial_port {
struct uart_port port;
unsigned int old_status;
int status_irq;
#ifdef CONFIG_SERIAL_BFIN_DMA
int tx_done;
int tx_count;
struct circ_buf rx_dma_buf;
struct timer_list rx_dma_timer;
int rx_dma_nrows;
unsigned int tx_dma_channel;
unsigned int rx_dma_channel;
struct work_struct tx_dma_workqueue;
#endif
#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
int scts;
int cts_pin;
int rts_pin;
#endif
};
struct bfin_serial_res {
unsigned long uart_base_addr;
int uart_irq;
@ -148,3 +90,5 @@ struct bfin_serial_res bfin_serial_resource[] = {
};
#define DRIVER_NAME "bfin-uart"
#include <asm/bfin_serial.h>

15
arch/blackfin/mach-bf548/include/mach/blackfin.h
View File

@ -49,19 +49,4 @@
#endif
#define BFIN_UART_NR_PORTS 4
#define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
#define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
#define OFFSET_GCTL 0x08 /* Global Control Register */
#define OFFSET_LCR 0x0C /* Line Control Register */
#define OFFSET_MCR 0x10 /* Modem Control Register */
#define OFFSET_LSR 0x14 /* Line Status Register */
#define OFFSET_MSR 0x18 /* Modem Status Register */
#define OFFSET_SCR 0x1C /* SCR Scratch Register */
#define OFFSET_IER_SET 0x20 /* Set Interrupt Enable Register */
#define OFFSET_IER_CLEAR 0x24 /* Clear Interrupt Enable Register */
#define OFFSET_THR 0x28 /* Transmit Holding register */
#define OFFSET_RBR 0x2C /* Receive Buffer register */
#endif

71
arch/blackfin/mach-bf548/include/mach/defBF54x_base.h
View File

@ -2172,68 +2172,6 @@
#define RCVDATA16 0xffff /* Receive FIFO 16-Bit Data */
/* Bit masks for UARTx_LCR */
#if 0
/* conflicts with legacy one in last section */
#define WLS 0x3 /* Word Length Select */
#endif
#define STB 0x4 /* Stop Bits */
#define PEN 0x8 /* Parity Enable */
#define EPS 0x10 /* Even Parity Select */
#define STP 0x20 /* Sticky Parity */
#define SB 0x40 /* Set Break */
/* Bit masks for UARTx_MCR */
#define XOFF 0x1 /* Transmitter Off */
#define MRTS 0x2 /* Manual Request To Send */
#define RFIT 0x4 /* Receive FIFO IRQ Threshold */
#define RFRT 0x8 /* Receive FIFO RTS Threshold */
#define LOOP_ENA 0x10 /* Loopback Mode Enable */
#define FCPOL 0x20 /* Flow Control Pin Polarity */
#define ARTS 0x40 /* Automatic Request To Send */
#define ACTS 0x80 /* Automatic Clear To Send */
/* Bit masks for UARTx_LSR */
#define DR 0x1 /* Data Ready */
#define OE 0x2 /* Overrun Error */
#define PE 0x4 /* Parity Error */
#define FE 0x8 /* Framing Error */
#define BI 0x10 /* Break Interrupt */
#define THRE 0x20 /* THR Empty */
#define TEMT 0x40 /* Transmitter Empty */
#define TFI 0x80 /* Transmission Finished Indicator */
/* Bit masks for UARTx_MSR */
#define SCTS 0x1 /* Sticky CTS */
#define CTS 0x10 /* Clear To Send */
#define RFCS 0x20 /* Receive FIFO Count Status */
/* Bit masks for UARTx_IER_SET & UARTx_IER_CLEAR */
#define ERBFI 0x1 /* Enable Receive Buffer Full Interrupt */
#define ETBEI 0x2 /* Enable Transmit Buffer Empty Interrupt */
#define ELSI 0x4 /* Enable Receive Status Interrupt */
#define EDSSI 0x8 /* Enable Modem Status Interrupt */
#define EDTPTI 0x10 /* Enable DMA Transmit PIRQ Interrupt */
#define ETFI 0x20 /* Enable Transmission Finished Interrupt */
#define ERFCI 0x40 /* Enable Receive FIFO Count Interrupt */
/* Bit masks for UARTx_GCTL */
#define UCEN 0x1 /* UART Enable */
#define IREN 0x2 /* IrDA Mode Enable */
#define TPOLC 0x4 /* IrDA TX Polarity Change */
#define RPOLC 0x8 /* IrDA RX Polarity Change */
#define FPE 0x10 /* Force Parity Error */
#define FFE 0x20 /* Force Framing Error */
#define EDBO 0x40 /* Enable Divide-by-One */
#define EGLSI 0x80 /* Enable Global LS Interrupt */
/* ******************************************* */
/* MULTI BIT MACRO ENUMERATIONS */
/* ******************************************* */
@ -2251,13 +2189,6 @@
#define WDTH_CAP 0x0002
#define EXT_CLK 0x0003
/* UARTx_LCR bit field options */
#define WLS_5 0x0000 /* 5 data bits */
#define WLS_6 0x0001 /* 6 data bits */
#define WLS_7 0x0002 /* 7 data bits */
#define WLS_8 0x0003 /* 8 data bits */
/* PINTx Register Bit Definitions */
#define PIQ0 0x00000001
@ -2706,8 +2637,6 @@ PORTJ_FER registers
/* for legacy compatibility */
#define WLS(x) (((x)-5) & 0x03) /* Word Length Select */
#define W1LMAX_MAX W1LMAX_MIN
#define EBIU_AMCBCTL0 EBIU_AMBCTL0
#define EBIU_AMCBCTL1 EBIU_AMBCTL1
#define PINT0_IRQ PINT0_REQUEST

14
arch/blackfin/mach-bf561/include/mach/bfin_serial.h Normal file
View File

@ -0,0 +1,14 @@
/*
* mach/bfin_serial.h - Blackfin UART/Serial definitions
*
* Copyright 2006-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __BFIN_MACH_SERIAL_H__
#define __BFIN_MACH_SERIAL_H__
#define BFIN_UART_NR_PORTS 1
#endif

74
arch/blackfin/mach-bf561/include/mach/bfin_serial_5xx.h
View File

@ -4,36 +4,9 @@
* Licensed under the GPL-2 or later.
*/
#include <linux/serial.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#define UART_GET_CHAR(uart) bfin_read16(((uart)->port.membase + OFFSET_RBR))
#define UART_GET_DLL(uart) bfin_read16(((uart)->port.membase + OFFSET_DLL))
#define UART_GET_IER(uart) bfin_read16(((uart)->port.membase + OFFSET_IER))
#define UART_GET_DLH(uart) bfin_read16(((uart)->port.membase + OFFSET_DLH))
#define UART_GET_IIR(uart) bfin_read16(((uart)->port.membase + OFFSET_IIR))
#define UART_GET_LCR(uart) bfin_read16(((uart)->port.membase + OFFSET_LCR))
#define UART_GET_GCTL(uart) bfin_read16(((uart)->port.membase + OFFSET_GCTL))
#define UART_PUT_CHAR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_THR),v)
#define UART_PUT_DLL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLL),v)
#define UART_PUT_IER(uart,v) bfin_write16(((uart)->port.membase + OFFSET_IER),v)
#define UART_SET_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
#define UART_CLEAR_IER(uart,v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
#define UART_PUT_DLH(uart,v) bfin_write16(((uart)->port.membase + OFFSET_DLH),v)
#define UART_PUT_LCR(uart,v) bfin_write16(((uart)->port.membase + OFFSET_LCR),v)
#define UART_PUT_GCTL(uart,v) bfin_write16(((uart)->port.membase + OFFSET_GCTL),v)
#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0)
#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0)
#define UART_GET_CTS(x) gpio_get_value(x->cts_pin)
#define UART_DISABLE_RTS(x) gpio_set_value(x->rts_pin, 1)
#define UART_ENABLE_RTS(x) gpio_set_value(x->rts_pin, 0)
#define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v)
#define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0)
#ifdef CONFIG_BFIN_UART0_CTSRTS
# define CONFIG_SERIAL_BFIN_CTSRTS
# ifndef CONFIG_UART0_CTS_PIN
@ -44,51 +17,6 @@
# endif
#endif
#define BFIN_UART_TX_FIFO_SIZE 2
struct bfin_serial_port {
struct uart_port port;
unsigned int old_status;
int status_irq;
unsigned int lsr;
#ifdef CONFIG_SERIAL_BFIN_DMA
int tx_done;
int tx_count;
struct circ_buf rx_dma_buf;
struct timer_list rx_dma_timer;
int rx_dma_nrows;
unsigned int tx_dma_channel;
unsigned int rx_dma_channel;
struct work_struct tx_dma_workqueue;
#else
# if ANOMALY_05000363
unsigned int anomaly_threshold;
# endif
#endif
#ifdef CONFIG_SERIAL_BFIN_CTSRTS
struct timer_list cts_timer;
int cts_pin;
int rts_pin;
#endif
};
/* The hardware clears the LSR bits upon read, so we need to cache
* some of the more fun bits in software so they don't get lost
* when checking the LSR in other code paths (TX).
*/
static inline unsigned int UART_GET_LSR(struct bfin_serial_port *uart)
{
unsigned int lsr = bfin_read16(uart->port.membase + OFFSET_LSR);
uart->lsr |= (lsr & (BI|FE|PE|OE));
return lsr | uart->lsr;
}
static inline void UART_CLEAR_LSR(struct bfin_serial_port *uart)
{
uart->lsr = 0;
bfin_write16(uart->port.membase + OFFSET_LSR, -1);
}
struct bfin_serial_res {
unsigned long uart_base_addr;
int uart_irq;
@ -120,3 +48,5 @@ struct bfin_serial_res bfin_serial_resource[] = {
};
#define DRIVER_NAME "bfin-uart"
#include <asm/bfin_serial.h>

15
arch/blackfin/mach-bf561/include/mach/blackfin.h
View File

@ -35,19 +35,4 @@
#define bfin_read_SICB_ISR(x) bfin_read32(__SIC_MUX(SICB_ISR0, x))
#define bfin_write_SICB_ISR(x, val) bfin_write32(__SIC_MUX(SICB_ISR0, x), val)
#define BFIN_UART_NR_PORTS 1
#define OFFSET_THR 0x00 /* Transmit Holding register */
#define OFFSET_RBR 0x00 /* Receive Buffer register */
#define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
#define OFFSET_IER 0x04 /* Interrupt Enable Register */
#define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
#define OFFSET_IIR 0x08 /* Interrupt Identification Register */
#define OFFSET_LCR 0x0C /* Line Control Register */
#define OFFSET_MCR 0x10 /* Modem Control Register */
#define OFFSET_LSR 0x14 /* Line Status Register */
#define OFFSET_MSR 0x18 /* Modem Status Register */
#define OFFSET_SCR 0x1C /* SCR Scratch Register */
#define OFFSET_GCTL 0x24 /* Global Control Register */
#endif /* _MACH_BLACKFIN_H_ */

77
arch/blackfin/mach-bf561/include/mach/defBF561.h
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@ -927,83 +927,6 @@
#define IWR_ENABLE(x) (1 << (x)) /* Wakeup Enable Peripheral #x */
#define IWR_DISABLE(x) (0xFFFFFFFF ^ (1 << (x))) /* Wakeup Disable Peripheral #x */
/* ***************************** UART CONTROLLER MASKS ********************** */
/* UART_LCR Register */
#define DLAB 0x80
#define SB 0x40
#define STP 0x20
#define EPS 0x10
#define PEN 0x08
#define STB 0x04
#define WLS(x) ((x-5) & 0x03)
#define DLAB_P 0x07
#define SB_P 0x06
#define STP_P 0x05
#define EPS_P 0x04
#define PEN_P 0x03
#define STB_P 0x02
#define WLS_P1 0x01
#define WLS_P0 0x00
/* UART_MCR Register */
#define LOOP_ENA 0x10
#define LOOP_ENA_P 0x04
/* UART_LSR Register */
#define TEMT 0x40
#define THRE 0x20
#define BI 0x10
#define FE 0x08
#define PE 0x04
#define OE 0x02
#define DR 0x01
#define TEMP_P 0x06
#define THRE_P 0x05
#define BI_P 0x04
#define FE_P 0x03
#define PE_P 0x02
#define OE_P 0x01
#define DR_P 0x00
/* UART_IER Register */
#define ELSI 0x04
#define ETBEI 0x02
#define ERBFI 0x01
#define ELSI_P 0x02
#define ETBEI_P 0x01
#define ERBFI_P 0x00
/* UART_IIR Register */
#define STATUS(x) ((x << 1) & 0x06)
#define NINT 0x01
#define STATUS_P1 0x02
#define STATUS_P0 0x01
#define NINT_P 0x00
#define IIR_TX_READY 0x02 /* UART_THR empty */
#define IIR_RX_READY 0x04 /* Receive data ready */
#define IIR_LINE_CHANGE 0x06 /* Receive line status */
#define IIR_STATUS 0x06
/* UART_GCTL Register */
#define FFE 0x20
#define FPE 0x10
#define RPOLC 0x08
#define TPOLC 0x04
#define IREN 0x02
#define UCEN 0x01
#define FFE_P 0x05
#define FPE_P 0x04
#define RPOLC_P 0x03
#define TPOLC_P 0x02
#define IREN_P 0x01
#define UCEN_P 0x00
/* ********* PARALLEL PERIPHERAL INTERFACE (PPI) MASKS **************** */
/* PPI_CONTROL Masks */