nios2: divide nios2-io.h into each specific drivers and remove it

The nios2-io.h defines hardware registers and bits of several FPGA
IP cores. It could be divided in to the specific drivers, including
altera timer, altera sysid, altera uart and altera jtag uart. The
altera pio and altera spi drivers use their own hardware definitions.
The removal of nios2-io.h will help modularity and maintenance.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>

6 files changed, 82 insertions, 159 deletions

diff --git a/arch/nios2/cpu/cpu.c b/arch/nios2/cpu/cpu.c
index 86f94b7..36ea90b 100644
--- a/arch/nios2/cpu/cpu.c
+++ b/arch/nios2/cpu/cpu.c
@@ -7,7 +7,6 @@
 
 #include <common.h>
 #include <nios2.h>
-#include <nios2-io.h>
 #include <asm/cache.h>
 
 DECLARE_GLOBAL_DATA_PTR;
diff --git a/arch/nios2/cpu/interrupts.c b/arch/nios2/cpu/interrupts.c
index c4bed22..b363a1f 100644
--- a/arch/nios2/cpu/interrupts.c
+++ b/arch/nios2/cpu/interrupts.c
@@ -10,7 +10,6 @@
 
 
 #include <nios2.h>
-#include <nios2-io.h>
 #include <asm/types.h>
 #include <asm/io.h>
 #include <asm/ptrace.h>
@@ -21,6 +20,25 @@
 #include <status_led.h>
 #endif
 
+typedef volatile struct {
+	unsigned	status;			/* Timer status reg */
+	unsigned	control;		/* Timer control reg */
+	unsigned	periodl;		/* Timeout period low */
+	unsigned	periodh;		/* Timeout period high */
+	unsigned	snapl;			/* Snapshot low */
+	unsigned	snaph;			/* Snapshot high */
+} nios_timer_t;
+
+/* status register */
+#define NIOS_TIMER_TO		(1 << 0)	/* Timeout */
+#define NIOS_TIMER_RUN		(1 << 1)	/* Timer running */
+
+/* control register */
+#define NIOS_TIMER_ITO		(1 << 0)	/* Timeout int ena */
+#define NIOS_TIMER_CONT		(1 << 1)	/* Continuous mode */
+#define NIOS_TIMER_START	(1 << 2)	/* Start timer */
+#define NIOS_TIMER_STOP		(1 << 3)	/* Stop timer */
+
 #if defined(CONFIG_SYS_NIOS_TMRBASE) && !defined(CONFIG_SYS_NIOS_TMRIRQ)
 #error CONFIG_SYS_NIOS_TMRIRQ not defined (see documentation)
 #endif
diff --git a/arch/nios2/cpu/sysid.c b/arch/nios2/cpu/sysid.c
index 943bff8..50819b2 100644
--- a/arch/nios2/cpu/sysid.c
+++ b/arch/nios2/cpu/sysid.c
@@ -11,12 +11,16 @@
 
 #include <command.h>
 #include <asm/io.h>
-#include <nios2-io.h>
 #include <linux/time.h>
 
+typedef volatile struct {
+	unsigned	id;			/* The system build id */
+	unsigned	timestamp;		/* Timestamp */
+} nios_sysid_t;
+
 void display_sysid (void)
 {
-	struct nios_sysid_t *sysid = (struct nios_sysid_t *)CONFIG_SYS_NIOS_SYSID_BASE;
+	nios_sysid_t *sysid = (nios_sysid_t *)CONFIG_SYS_NIOS_SYSID_BASE;
 	struct tm t;
 	char asc[32];
 	time_t stamp;
diff --git a/drivers/serial/altera_jtag_uart.c b/drivers/serial/altera_jtag_uart.c
index 0573c7a..9a81402 100644
--- a/drivers/serial/altera_jtag_uart.c
+++ b/drivers/serial/altera_jtag_uart.c
@@ -8,10 +8,28 @@
 #include <common.h>
 #include <watchdog.h>
 #include <asm/io.h>
-#include <nios2-io.h>
 #include <linux/compiler.h>
 #include <serial.h>
 
+typedef volatile struct {
+	unsigned	data;			/* Data register */
+	unsigned	control;		/* Control register */
+} nios_jtag_t;
+
+/* data register */
+#define NIOS_JTAG_RVALID	(1<<15)		/* Read valid */
+#define NIOS_JTAG_DATA(d)	((d)&0x0ff)	/* Read data */
+#define NIOS_JTAG_RAVAIL(d)	((d)>>16)	/* Read space avail */
+
+/* control register */
+#define NIOS_JTAG_RE		(1 << 0)	/* read intr enable */
+#define NIOS_JTAG_WE		(1 << 1)	/* write intr enable */
+#define NIOS_JTAG_RI		(1 << 8)	/* read intr pending */
+#define NIOS_JTAG_WI		(1 << 9)	/* write intr pending*/
+#define NIOS_JTAG_AC		(1 << 10)	/* activity indicator */
+#define NIOS_JTAG_RRDY		(1 << 12)	/* read available */
+#define NIOS_JTAG_WSPACE(d)	((d)>>16)	/* Write space avail */
+
 DECLARE_GLOBAL_DATA_PTR;
 
 /*------------------------------------------------------------------
diff --git a/drivers/serial/altera_uart.c b/drivers/serial/altera_uart.c
index d620528..d6b1484 100644
--- a/drivers/serial/altera_uart.c
+++ b/drivers/serial/altera_uart.c
@@ -9,10 +9,47 @@
 #include <common.h>
 #include <watchdog.h>
 #include <asm/io.h>
-#include <nios2-io.h>
 #include <linux/compiler.h>
 #include <serial.h>
 
+typedef volatile struct {
+	unsigned	rxdata;		/* Rx data reg */
+	unsigned	txdata;		/* Tx data reg */
+	unsigned	status;		/* Status reg */
+	unsigned	control;	/* Control reg */
+	unsigned	divisor;	/* Baud rate divisor reg */
+	unsigned	endofpacket;	/* End-of-packet reg */
+} nios_uart_t;
+
+/* status register */
+#define NIOS_UART_PE		(1 << 0)	/* parity error */
+#define NIOS_UART_FE		(1 << 1)	/* frame error */
+#define NIOS_UART_BRK		(1 << 2)	/* break detect */
+#define NIOS_UART_ROE		(1 << 3)	/* rx overrun */
+#define NIOS_UART_TOE		(1 << 4)	/* tx overrun */
+#define NIOS_UART_TMT		(1 << 5)	/* tx empty */
+#define NIOS_UART_TRDY		(1 << 6)	/* tx ready */
+#define NIOS_UART_RRDY		(1 << 7)	/* rx ready */
+#define NIOS_UART_E		(1 << 8)	/* exception */
+#define NIOS_UART_DCTS		(1 << 10)	/* cts change */
+#define NIOS_UART_CTS		(1 << 11)	/* cts */
+#define NIOS_UART_EOP		(1 << 12)	/* eop detected */
+
+/* control register */
+#define NIOS_UART_IPE		(1 << 0)	/* parity error int ena*/
+#define NIOS_UART_IFE		(1 << 1)	/* frame error int ena */
+#define NIOS_UART_IBRK		(1 << 2)	/* break detect int ena */
+#define NIOS_UART_IROE		(1 << 3)	/* rx overrun int ena */
+#define NIOS_UART_ITOE		(1 << 4)	/* tx overrun int ena */
+#define NIOS_UART_ITMT		(1 << 5)	/* tx empty int ena */
+#define NIOS_UART_ITRDY		(1 << 6)	/* tx ready int ena */
+#define NIOS_UART_IRRDY		(1 << 7)	/* rx ready int ena */
+#define NIOS_UART_IE		(1 << 8)	/* exception int ena */
+#define NIOS_UART_TBRK		(1 << 9)	/* transmit break */
+#define NIOS_UART_IDCTS		(1 << 10)	/* cts change int ena */
+#define NIOS_UART_RTS		(1 << 11)	/* rts */
+#define NIOS_UART_IEOP		(1 << 12)	/* eop detected int ena */
+
 DECLARE_GLOBAL_DATA_PTR;
 
 /*------------------------------------------------------------------
diff --git a/include/nios2-io.h b/include/nios2-io.h
deleted file mode 100644
index 6f1ae50..0000000
--- a/include/nios2-io.h
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
- * Scott McNutt <smcnutt@psyent.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-/*************************************************************************
- * Altera Nios2 Standard Peripherals
- ************************************************************************/
-
-#ifndef __NIOS2IO_H__
-#define __NIOS2IO_H__
-
-/*------------------------------------------------------------------------
- * UART (http://www.altera.com/literature/ds/ds_nios_uart.pdf)
- *----------------------------------------------------------------------*/
-typedef volatile struct nios_uart_t {
-	unsigned	rxdata;		/* Rx data reg */
-	unsigned	txdata;		/* Tx data reg */
-	unsigned	status;		/* Status reg */
-	unsigned	control;	/* Control reg */
-	unsigned	divisor;	/* Baud rate divisor reg */
-	unsigned	endofpacket;	/* End-of-packet reg */
-}nios_uart_t;
-
-/* status register */
-#define NIOS_UART_PE		(1 << 0)	/* parity error */
-#define NIOS_UART_FE		(1 << 1)	/* frame error */
-#define NIOS_UART_BRK		(1 << 2)	/* break detect */
-#define NIOS_UART_ROE		(1 << 3)	/* rx overrun */
-#define NIOS_UART_TOE		(1 << 4)	/* tx overrun */
-#define NIOS_UART_TMT		(1 << 5)	/* tx empty */
-#define NIOS_UART_TRDY		(1 << 6)	/* tx ready */
-#define NIOS_UART_RRDY		(1 << 7)	/* rx ready */
-#define NIOS_UART_E		(1 << 8)	/* exception */
-#define NIOS_UART_DCTS		(1 << 10)	/* cts change */
-#define NIOS_UART_CTS		(1 << 11)	/* cts */
-#define NIOS_UART_EOP		(1 << 12)	/* eop detected */
-
-/* control register */
-#define NIOS_UART_IPE		(1 << 0)	/* parity error int ena*/
-#define NIOS_UART_IFE		(1 << 1)	/* frame error int ena */
-#define NIOS_UART_IBRK		(1 << 2)	/* break detect int ena */
-#define NIOS_UART_IROE		(1 << 3)	/* rx overrun int ena */
-#define NIOS_UART_ITOE		(1 << 4)	/* tx overrun int ena */
-#define NIOS_UART_ITMT		(1 << 5)	/* tx empty int ena */
-#define NIOS_UART_ITRDY		(1 << 6)	/* tx ready int ena */
-#define NIOS_UART_IRRDY		(1 << 7)	/* rx ready int ena */
-#define NIOS_UART_IE		(1 << 8)	/* exception int ena */
-#define NIOS_UART_TBRK		(1 << 9)	/* transmit break */
-#define NIOS_UART_IDCTS		(1 << 10)	/* cts change int ena */
-#define NIOS_UART_RTS		(1 << 11)	/* rts */
-#define NIOS_UART_IEOP		(1 << 12)	/* eop detected int ena */
-
-
-/*------------------------------------------------------------------------
- * TIMER (http://www.altera.com/literature/ds/ds_nios_timer.pdf)
- *----------------------------------------------------------------------*/
-typedef volatile struct nios_timer_t {
-	unsigned	status;			/* Timer status reg */
-	unsigned	control;		/* Timer control reg */
-	unsigned	periodl;		/* Timeout period low */
-	unsigned	periodh;		/* Timeout period high */
-	unsigned	snapl;			/* Snapshot low */
-	unsigned	snaph;			/* Snapshot high */
-}nios_timer_t;
-
-/* status register */
-#define NIOS_TIMER_TO		(1 << 0)	/* Timeout */
-#define NIOS_TIMER_RUN		(1 << 1)	/* Timer running */
-
-/* control register */
-#define NIOS_TIMER_ITO		(1 << 0)	/* Timeout int ena */
-#define NIOS_TIMER_CONT		(1 << 1)	/* Continuous mode */
-#define NIOS_TIMER_START	(1 << 2)	/* Start timer */
-#define NIOS_TIMER_STOP		(1 << 3)	/* Stop timer */
-
-
-/*------------------------------------------------------------------------
- * PIO (http://www.altera.com/literature/ds/ds_nios_pio.pdf)
- *----------------------------------------------------------------------*/
-typedef volatile struct nios_pio_t {
-	unsigned int	data;		/* Data value at each PIO in/out */
-	unsigned int	direction;	/* Data direct. for each PIO bit */
-	unsigned int	interruptmask;	/* Per-bit IRQ enable/disable */
-	unsigned int	edgecapture;	/* Per-bit sync. edge detect & hold */
-}nios_pio_t;
-
-/* direction register */
-#define NIOS_PIO_OUT		(1)		/* PIO bit is output */
-#define NIOS_PIO_IN		(0)		/* PIO bit is input */
-
-
-/*------------------------------------------------------------------------
- * SPI (http://www.altera.com/literature/ds/ds_nios_spi.pdf)
- *----------------------------------------------------------------------*/
-typedef volatile struct nios_spi_t {
-	unsigned	rxdata;		/* Rx data reg */
-	unsigned	txdata;		/* Tx data reg */
-	unsigned	status;		/* Status reg */
-	unsigned	control;	/* Control reg */
-	unsigned	reserved;	/* (master only) */
-	unsigned	slaveselect;	/* SPI slave select mask (master only) */
-}nios_spi_t;
-
-/* status register */
-#define NIOS_SPI_ROE		(1 << 3)	/* rx overrun */
-#define NIOS_SPI_TOE		(1 << 4)	/* tx overrun */
-#define NIOS_SPI_TMT		(1 << 5)	/* tx empty */
-#define NIOS_SPI_TRDY		(1 << 6)	/* tx ready */
-#define NIOS_SPI_RRDY		(1 << 7)	/* rx ready */
-#define NIOS_SPI_E		(1 << 8)	/* exception */
-
-/* control register */
-#define NIOS_SPI_IROE		(1 << 3)	/* rx overrun int ena */
-#define NIOS_SPI_ITOE		(1 << 4)	/* tx overrun int ena */
-#define NIOS_SPI_ITRDY		(1 << 6)	/* tx ready int ena */
-#define NIOS_SPI_IRRDY		(1 << 7)	/* rx ready int ena */
-#define NIOS_SPI_IE		(1 << 8)	/* exception int ena */
-#define NIOS_SPI_SSO		(1 << 10)	/* override SS_n output */
-
-/*------------------------------------------------------------------------
- * JTAG UART
- *----------------------------------------------------------------------*/
-typedef volatile struct nios_jtag_t {
-	unsigned	data;			/* Data register */
-	unsigned	control;		/* Control register */
-}nios_jtag_t;
-
-/* data register */
-#define NIOS_JTAG_RVALID	(1<<15)		/* Read valid */
-#define NIOS_JTAG_DATA(d)	((d)&0x0ff)	/* Read data */
-#define NIOS_JTAG_RAVAIL(d)	((d)>>16)	/* Read space avail */
-
-/* control register */
-#define NIOS_JTAG_RE		(1 << 0)	/* read intr enable */
-#define NIOS_JTAG_WE		(1 << 1)	/* write intr enable */
-#define NIOS_JTAG_RI		(1 << 8)	/* read intr pending */
-#define NIOS_JTAG_WI		(1 << 9)	/* write intr pending*/
-#define NIOS_JTAG_AC		(1 << 10)	/* activity indicator */
-#define NIOS_JTAG_RRDY		(1 << 12)	/* read available */
-#define NIOS_JTAG_WSPACE(d)	((d)>>16)	/* Write space avail */
-
-/*------------------------------------------------------------------------
- * SYSTEM ID
- *----------------------------------------------------------------------*/
-typedef volatile struct nios_sysid_t {
-	unsigned	id;			/* The system build id*/
-	unsigned	timestamp;		/* Timestamp */
-}nios_sysid_t;
-
-#endif /* __NIOS2IO_H__ */