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532 lines
14 KiB
Diff
532 lines
14 KiB
Diff
--- a/arch/mips/sibyte/swarm/Makefile
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+++ b/arch/mips/sibyte/swarm/Makefile
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@@ -1,4 +1,3 @@
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-obj-y := platform.o setup.o rtc_xicor1241.o \
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- rtc_m41t81.o
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+obj-y := platform.o setup.o
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obj-$(CONFIG_I2C_BOARDINFO) += swarm-i2c.o
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--- a/arch/mips/sibyte/swarm/rtc_m41t81.c
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+++ /dev/null
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@@ -1,233 +0,0 @@
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-/*
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- * Copyright (C) 2000, 2001 Broadcom Corporation
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- *
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- * Copyright (C) 2002 MontaVista Software Inc.
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- * Author: jsun@mvista.com or jsun@junsun.net
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License as published by the
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- * Free Software Foundation; either version 2 of the License, or (at your
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- * option) any later version.
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- *
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- */
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-#include <linux/bcd.h>
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-#include <linux/types.h>
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-#include <linux/time.h>
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-
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-#include <asm/time.h>
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-#include <asm/addrspace.h>
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-#include <asm/io.h>
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-
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-#include <asm/sibyte/sb1250.h>
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-#include <asm/sibyte/sb1250_regs.h>
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-#include <asm/sibyte/sb1250_smbus.h>
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-
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-
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-/* M41T81 definitions */
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-
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-/*
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- * Register bits
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- */
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-
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-#define M41T81REG_SC_ST 0x80 /* stop bit */
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-#define M41T81REG_HR_CB 0x40 /* century bit */
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-#define M41T81REG_HR_CEB 0x80 /* century enable bit */
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-#define M41T81REG_CTL_S 0x20 /* sign bit */
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-#define M41T81REG_CTL_FT 0x40 /* frequency test bit */
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-#define M41T81REG_CTL_OUT 0x80 /* output level */
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-#define M41T81REG_WD_RB0 0x01 /* watchdog resolution bit 0 */
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-#define M41T81REG_WD_RB1 0x02 /* watchdog resolution bit 1 */
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-#define M41T81REG_WD_BMB0 0x04 /* watchdog multiplier bit 0 */
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-#define M41T81REG_WD_BMB1 0x08 /* watchdog multiplier bit 1 */
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-#define M41T81REG_WD_BMB2 0x10 /* watchdog multiplier bit 2 */
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-#define M41T81REG_WD_BMB3 0x20 /* watchdog multiplier bit 3 */
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-#define M41T81REG_WD_BMB4 0x40 /* watchdog multiplier bit 4 */
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-#define M41T81REG_AMO_ABE 0x20 /* alarm in "battery back-up mode" enable bit */
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-#define M41T81REG_AMO_SQWE 0x40 /* square wave enable */
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-#define M41T81REG_AMO_AFE 0x80 /* alarm flag enable flag */
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-#define M41T81REG_ADT_RPT5 0x40 /* alarm repeat mode bit 5 */
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-#define M41T81REG_ADT_RPT4 0x80 /* alarm repeat mode bit 4 */
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-#define M41T81REG_AHR_RPT3 0x80 /* alarm repeat mode bit 3 */
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-#define M41T81REG_AHR_HT 0x40 /* halt update bit */
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-#define M41T81REG_AMN_RPT2 0x80 /* alarm repeat mode bit 2 */
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-#define M41T81REG_ASC_RPT1 0x80 /* alarm repeat mode bit 1 */
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-#define M41T81REG_FLG_AF 0x40 /* alarm flag (read only) */
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-#define M41T81REG_FLG_WDF 0x80 /* watchdog flag (read only) */
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-#define M41T81REG_SQW_RS0 0x10 /* sqw frequency bit 0 */
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-#define M41T81REG_SQW_RS1 0x20 /* sqw frequency bit 1 */
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-#define M41T81REG_SQW_RS2 0x40 /* sqw frequency bit 2 */
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-#define M41T81REG_SQW_RS3 0x80 /* sqw frequency bit 3 */
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-
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-
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-/*
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- * Register numbers
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- */
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-
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-#define M41T81REG_TSC 0x00 /* tenths/hundredths of second */
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-#define M41T81REG_SC 0x01 /* seconds */
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-#define M41T81REG_MN 0x02 /* minute */
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-#define M41T81REG_HR 0x03 /* hour/century */
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-#define M41T81REG_DY 0x04 /* day of week */
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-#define M41T81REG_DT 0x05 /* date of month */
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-#define M41T81REG_MO 0x06 /* month */
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-#define M41T81REG_YR 0x07 /* year */
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-#define M41T81REG_CTL 0x08 /* control */
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-#define M41T81REG_WD 0x09 /* watchdog */
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-#define M41T81REG_AMO 0x0A /* alarm: month */
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-#define M41T81REG_ADT 0x0B /* alarm: date */
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-#define M41T81REG_AHR 0x0C /* alarm: hour */
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-#define M41T81REG_AMN 0x0D /* alarm: minute */
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-#define M41T81REG_ASC 0x0E /* alarm: second */
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-#define M41T81REG_FLG 0x0F /* flags */
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-#define M41T81REG_SQW 0x13 /* square wave register */
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-
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-#define M41T81_CCR_ADDRESS 0x68
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-
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-#define SMB_CSR(reg) IOADDR(A_SMB_REGISTER(1, reg))
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-
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-static int m41t81_read(uint8_t addr)
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-{
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- __raw_writeq(addr & 0xff, SMB_CSR(R_SMB_CMD));
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- __raw_writeq(V_SMB_ADDR(M41T81_CCR_ADDRESS) | V_SMB_TT_WR1BYTE,
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- SMB_CSR(R_SMB_START));
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-
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- __raw_writeq(V_SMB_ADDR(M41T81_CCR_ADDRESS) | V_SMB_TT_RD1BYTE,
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- SMB_CSR(R_SMB_START));
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-
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- if (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_ERROR) {
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- /* Clear error bit by writing a 1 */
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- __raw_writeq(M_SMB_ERROR, SMB_CSR(R_SMB_STATUS));
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- return -1;
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- }
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-
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- return (__raw_readq(SMB_CSR(R_SMB_DATA)) & 0xff);
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-}
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-
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-static int m41t81_write(uint8_t addr, int b)
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-{
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- __raw_writeq(addr & 0xff, SMB_CSR(R_SMB_CMD));
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- __raw_writeq(b & 0xff, SMB_CSR(R_SMB_DATA));
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- __raw_writeq(V_SMB_ADDR(M41T81_CCR_ADDRESS) | V_SMB_TT_WR2BYTE,
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- SMB_CSR(R_SMB_START));
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-
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- if (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_ERROR) {
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- /* Clear error bit by writing a 1 */
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- __raw_writeq(M_SMB_ERROR, SMB_CSR(R_SMB_STATUS));
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- return -1;
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- }
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-
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- /* read the same byte again to make sure it is written */
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- __raw_writeq(V_SMB_ADDR(M41T81_CCR_ADDRESS) | V_SMB_TT_RD1BYTE,
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- SMB_CSR(R_SMB_START));
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-
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- return 0;
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-}
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-
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-int m41t81_set_time(unsigned long t)
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-{
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- struct rtc_time tm;
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- unsigned long flags;
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-
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- /* Note we don't care about the century */
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- rtc_time_to_tm(t, &tm);
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-
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- /*
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- * Note the write order matters as it ensures the correctness.
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- * When we write sec, 10th sec is clear. It is reasonable to
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- * believe we should finish writing min within a second.
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- */
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-
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- spin_lock_irqsave(&rtc_lock, flags);
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- tm.tm_sec = bin2bcd(tm.tm_sec);
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- m41t81_write(M41T81REG_SC, tm.tm_sec);
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-
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- tm.tm_min = bin2bcd(tm.tm_min);
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- m41t81_write(M41T81REG_MN, tm.tm_min);
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-
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- tm.tm_hour = bin2bcd(tm.tm_hour);
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- tm.tm_hour = (tm.tm_hour & 0x3f) | (m41t81_read(M41T81REG_HR) & 0xc0);
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- m41t81_write(M41T81REG_HR, tm.tm_hour);
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-
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- /* tm_wday starts from 0 to 6 */
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- if (tm.tm_wday == 0) tm.tm_wday = 7;
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- tm.tm_wday = bin2bcd(tm.tm_wday);
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- m41t81_write(M41T81REG_DY, tm.tm_wday);
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-
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- tm.tm_mday = bin2bcd(tm.tm_mday);
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- m41t81_write(M41T81REG_DT, tm.tm_mday);
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-
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- /* tm_mon starts from 0, *ick* */
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- tm.tm_mon ++;
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- tm.tm_mon = bin2bcd(tm.tm_mon);
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- m41t81_write(M41T81REG_MO, tm.tm_mon);
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-
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- /* we don't do century, everything is beyond 2000 */
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- tm.tm_year %= 100;
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- tm.tm_year = bin2bcd(tm.tm_year);
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- m41t81_write(M41T81REG_YR, tm.tm_year);
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- spin_unlock_irqrestore(&rtc_lock, flags);
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-
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- return 0;
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-}
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-
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-unsigned long m41t81_get_time(void)
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-{
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- unsigned int year, mon, day, hour, min, sec;
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- unsigned long flags;
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-
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- /*
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- * min is valid if two reads of sec are the same.
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- */
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- for (;;) {
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- spin_lock_irqsave(&rtc_lock, flags);
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- sec = m41t81_read(M41T81REG_SC);
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- min = m41t81_read(M41T81REG_MN);
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- if (sec == m41t81_read(M41T81REG_SC)) break;
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- spin_unlock_irqrestore(&rtc_lock, flags);
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- }
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- hour = m41t81_read(M41T81REG_HR) & 0x3f;
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- day = m41t81_read(M41T81REG_DT);
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- mon = m41t81_read(M41T81REG_MO);
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- year = m41t81_read(M41T81REG_YR);
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- spin_unlock_irqrestore(&rtc_lock, flags);
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-
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- sec = bcd2bin(sec);
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- min = bcd2bin(min);
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- hour = bcd2bin(hour);
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- day = bcd2bin(day);
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- mon = bcd2bin(mon);
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- year = bcd2bin(year);
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-
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- year += 2000;
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-
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- return mktime(year, mon, day, hour, min, sec);
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-}
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-
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-int m41t81_probe(void)
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-{
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- unsigned int tmp;
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-
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- /* enable chip if it is not enabled yet */
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- tmp = m41t81_read(M41T81REG_SC);
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- m41t81_write(M41T81REG_SC, tmp & 0x7f);
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-
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- return (m41t81_read(M41T81REG_SC) != -1);
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-}
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--- a/arch/mips/sibyte/swarm/rtc_xicor1241.c
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+++ /dev/null
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@@ -1,210 +0,0 @@
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-/*
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- * Copyright (C) 2000, 2001 Broadcom Corporation
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- *
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- * Copyright (C) 2002 MontaVista Software Inc.
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- * Author: jsun@mvista.com or jsun@junsun.net
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License as published by the
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- * Free Software Foundation; either version 2 of the License, or (at your
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- * option) any later version.
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- */
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-#include <linux/bcd.h>
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-#include <linux/types.h>
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-#include <linux/time.h>
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-
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-#include <asm/time.h>
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-#include <asm/addrspace.h>
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-#include <asm/io.h>
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-
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-#include <asm/sibyte/sb1250.h>
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-#include <asm/sibyte/sb1250_regs.h>
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-#include <asm/sibyte/sb1250_smbus.h>
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-
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-
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-/* Xicor 1241 definitions */
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-
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-/*
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- * Register bits
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- */
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-
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-#define X1241REG_SR_BAT 0x80 /* currently on battery power */
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-#define X1241REG_SR_RWEL 0x04 /* r/w latch is enabled, can write RTC */
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-#define X1241REG_SR_WEL 0x02 /* r/w latch is unlocked, can enable r/w now */
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-#define X1241REG_SR_RTCF 0x01 /* clock failed */
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-#define X1241REG_BL_BP2 0x80 /* block protect 2 */
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-#define X1241REG_BL_BP1 0x40 /* block protect 1 */
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-#define X1241REG_BL_BP0 0x20 /* block protect 0 */
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-#define X1241REG_BL_WD1 0x10
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-#define X1241REG_BL_WD0 0x08
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-#define X1241REG_HR_MIL 0x80 /* military time format */
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-
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-/*
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- * Register numbers
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- */
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-
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-#define X1241REG_BL 0x10 /* block protect bits */
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-#define X1241REG_INT 0x11 /* */
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-#define X1241REG_SC 0x30 /* Seconds */
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-#define X1241REG_MN 0x31 /* Minutes */
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-#define X1241REG_HR 0x32 /* Hours */
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-#define X1241REG_DT 0x33 /* Day of month */
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-#define X1241REG_MO 0x34 /* Month */
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-#define X1241REG_YR 0x35 /* Year */
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-#define X1241REG_DW 0x36 /* Day of Week */
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-#define X1241REG_Y2K 0x37 /* Year 2K */
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-#define X1241REG_SR 0x3F /* Status register */
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-
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-#define X1241_CCR_ADDRESS 0x6F
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-
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-#define SMB_CSR(reg) IOADDR(A_SMB_REGISTER(1, reg))
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-
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-static int xicor_read(uint8_t addr)
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-{
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- __raw_writeq((addr >> 8) & 0x7, SMB_CSR(R_SMB_CMD));
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- __raw_writeq(addr & 0xff, SMB_CSR(R_SMB_DATA));
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- __raw_writeq(V_SMB_ADDR(X1241_CCR_ADDRESS) | V_SMB_TT_WR2BYTE,
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- SMB_CSR(R_SMB_START));
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-
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- __raw_writeq(V_SMB_ADDR(X1241_CCR_ADDRESS) | V_SMB_TT_RD1BYTE,
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- SMB_CSR(R_SMB_START));
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-
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- if (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_ERROR) {
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- /* Clear error bit by writing a 1 */
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- __raw_writeq(M_SMB_ERROR, SMB_CSR(R_SMB_STATUS));
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- return -1;
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- }
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-
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- return (__raw_readq(SMB_CSR(R_SMB_DATA)) & 0xff);
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-}
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-
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-static int xicor_write(uint8_t addr, int b)
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-{
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- __raw_writeq(addr, SMB_CSR(R_SMB_CMD));
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- __raw_writeq((addr & 0xff) | ((b & 0xff) << 8), SMB_CSR(R_SMB_DATA));
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- __raw_writeq(V_SMB_ADDR(X1241_CCR_ADDRESS) | V_SMB_TT_WR3BYTE,
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- SMB_CSR(R_SMB_START));
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-
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- while (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_BUSY)
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- ;
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-
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- if (__raw_readq(SMB_CSR(R_SMB_STATUS)) & M_SMB_ERROR) {
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- /* Clear error bit by writing a 1 */
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- __raw_writeq(M_SMB_ERROR, SMB_CSR(R_SMB_STATUS));
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- return -1;
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- } else {
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- return 0;
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- }
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-}
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-
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-int xicor_set_time(unsigned long t)
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-{
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- struct rtc_time tm;
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- int tmp;
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- unsigned long flags;
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-
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- rtc_time_to_tm(t, &tm);
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- tm.tm_year += 1900;
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-
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- spin_lock_irqsave(&rtc_lock, flags);
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- /* unlock writes to the CCR */
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- xicor_write(X1241REG_SR, X1241REG_SR_WEL);
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- xicor_write(X1241REG_SR, X1241REG_SR_WEL | X1241REG_SR_RWEL);
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-
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- /* trivial ones */
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- tm.tm_sec = bin2bcd(tm.tm_sec);
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- xicor_write(X1241REG_SC, tm.tm_sec);
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-
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- tm.tm_min = bin2bcd(tm.tm_min);
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- xicor_write(X1241REG_MN, tm.tm_min);
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-
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- tm.tm_mday = bin2bcd(tm.tm_mday);
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- xicor_write(X1241REG_DT, tm.tm_mday);
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-
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- /* tm_mon starts from 0, *ick* */
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- tm.tm_mon ++;
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- tm.tm_mon = bin2bcd(tm.tm_mon);
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- xicor_write(X1241REG_MO, tm.tm_mon);
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-
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- /* year is split */
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- tmp = tm.tm_year / 100;
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- tm.tm_year %= 100;
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- xicor_write(X1241REG_YR, tm.tm_year);
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- xicor_write(X1241REG_Y2K, tmp);
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-
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- /* hour is the most tricky one */
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- tmp = xicor_read(X1241REG_HR);
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- if (tmp & X1241REG_HR_MIL) {
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- /* 24 hour format */
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- tm.tm_hour = bin2bcd(tm.tm_hour);
|
|
- tmp = (tmp & ~0x3f) | (tm.tm_hour & 0x3f);
|
|
- } else {
|
|
- /* 12 hour format, with 0x2 for pm */
|
|
- tmp = tmp & ~0x3f;
|
|
- if (tm.tm_hour >= 12) {
|
|
- tmp |= 0x20;
|
|
- tm.tm_hour -= 12;
|
|
- }
|
|
- tm.tm_hour = bin2bcd(tm.tm_hour);
|
|
- tmp |= tm.tm_hour;
|
|
- }
|
|
- xicor_write(X1241REG_HR, tmp);
|
|
-
|
|
- xicor_write(X1241REG_SR, 0);
|
|
- spin_unlock_irqrestore(&rtc_lock, flags);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-unsigned long xicor_get_time(void)
|
|
-{
|
|
- unsigned int year, mon, day, hour, min, sec, y2k;
|
|
- unsigned long flags;
|
|
-
|
|
- spin_lock_irqsave(&rtc_lock, flags);
|
|
- sec = xicor_read(X1241REG_SC);
|
|
- min = xicor_read(X1241REG_MN);
|
|
- hour = xicor_read(X1241REG_HR);
|
|
-
|
|
- if (hour & X1241REG_HR_MIL) {
|
|
- hour &= 0x3f;
|
|
- } else {
|
|
- if (hour & 0x20)
|
|
- hour = (hour & 0xf) + 0x12;
|
|
- }
|
|
-
|
|
- day = xicor_read(X1241REG_DT);
|
|
- mon = xicor_read(X1241REG_MO);
|
|
- year = xicor_read(X1241REG_YR);
|
|
- y2k = xicor_read(X1241REG_Y2K);
|
|
- spin_unlock_irqrestore(&rtc_lock, flags);
|
|
-
|
|
- sec = bcd2bin(sec);
|
|
- min = bcd2bin(min);
|
|
- hour = bcd2bin(hour);
|
|
- day = bcd2bin(day);
|
|
- mon = bcd2bin(mon);
|
|
- year = bcd2bin(year);
|
|
- y2k = bcd2bin(y2k);
|
|
-
|
|
- year += (y2k * 100);
|
|
-
|
|
- return mktime(year, mon, day, hour, min, sec);
|
|
-}
|
|
-
|
|
-int xicor_probe(void)
|
|
-{
|
|
- return (xicor_read(X1241REG_SC) != -1);
|
|
-}
|
|
--- a/arch/mips/sibyte/swarm/setup.c
|
|
+++ b/arch/mips/sibyte/swarm/setup.c
|
|
@@ -56,14 +56,6 @@ extern void sb1250_setup(void);
|
|
#error invalid SiByte board configuration
|
|
#endif
|
|
|
|
-extern int xicor_probe(void);
|
|
-extern int xicor_set_time(unsigned long);
|
|
-extern unsigned long xicor_get_time(void);
|
|
-
|
|
-extern int m41t81_probe(void);
|
|
-extern int m41t81_set_time(unsigned long);
|
|
-extern unsigned long m41t81_get_time(void);
|
|
-
|
|
const char *get_system_type(void)
|
|
{
|
|
return "SiByte " SIBYTE_BOARD_NAME;
|
|
@@ -79,42 +71,14 @@ int swarm_be_handler(struct pt_regs *reg
|
|
return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL);
|
|
}
|
|
|
|
-enum swarm_rtc_type {
|
|
- RTC_NONE,
|
|
- RTC_XICOR,
|
|
- RTC_M4LT81
|
|
-};
|
|
-
|
|
-enum swarm_rtc_type swarm_rtc_type;
|
|
-
|
|
unsigned long read_persistent_clock(void)
|
|
{
|
|
- switch (swarm_rtc_type) {
|
|
- case RTC_XICOR:
|
|
- return xicor_get_time();
|
|
-
|
|
- case RTC_M4LT81:
|
|
- return m41t81_get_time();
|
|
-
|
|
- case RTC_NONE:
|
|
- default:
|
|
- return mktime(2000, 1, 1, 0, 0, 0);
|
|
- }
|
|
+ return mktime(2000, 1, 1, 0, 0, 0);
|
|
}
|
|
|
|
int rtc_mips_set_time(unsigned long sec)
|
|
{
|
|
- switch (swarm_rtc_type) {
|
|
- case RTC_XICOR:
|
|
- return xicor_set_time(sec);
|
|
-
|
|
- case RTC_M4LT81:
|
|
- return m41t81_set_time(sec);
|
|
-
|
|
- case RTC_NONE:
|
|
- default:
|
|
- return -1;
|
|
- }
|
|
+ return -1;
|
|
}
|
|
|
|
void __init plat_mem_setup(void)
|
|
@@ -131,11 +95,6 @@ void __init plat_mem_setup(void)
|
|
|
|
board_be_handler = swarm_be_handler;
|
|
|
|
- if (xicor_probe())
|
|
- swarm_rtc_type = RTC_XICOR;
|
|
- if (m41t81_probe())
|
|
- swarm_rtc_type = RTC_M4LT81;
|
|
-
|
|
printk("This kernel optimized for "
|
|
#ifdef CONFIG_SIMULATION
|
|
"simulation"
|