X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fcris%2Farch-v10%2Fdrivers%2Fds1302.c;h=b100f26497c4e4b430d1cf8699d52ce43faffae5;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=fba530fcfaebf9fded0b381ec1b80ea1132d8bb4;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git diff --git a/arch/cris/arch-v10/drivers/ds1302.c b/arch/cris/arch-v10/drivers/ds1302.c index fba530fcf..b100f2649 100644 --- a/arch/cris/arch-v10/drivers/ds1302.c +++ b/arch/cris/arch-v10/drivers/ds1302.c @@ -7,6 +7,15 @@ *! Functions exported: ds1302_readreg, ds1302_writereg, ds1302_init *! *! $Log: ds1302.c,v $ +*! Revision 1.18 2005/01/24 09:11:26 mikaelam +*! Minor changes to get DS1302 RTC chip driver to work +*! +*! Revision 1.17 2005/01/05 06:11:22 starvik +*! No need to do local_irq_disable after local_irq_save. +*! +*! Revision 1.16 2004/12/13 12:21:52 starvik +*! Added I/O and DMA allocators from Linux 2.4 +*! *! Revision 1.14 2004/08/24 06:48:43 starvik *! Whitespace cleanup *! @@ -124,9 +133,9 @@ *! *! --------------------------------------------------------------------------- *! -*! (C) Copyright 1999, 2000, 2001 Axis Communications AB, LUND, SWEDEN +*! (C) Copyright 1999, 2000, 2001, 2002, 2003, 2004 Axis Communications AB, LUND, SWEDEN *! -*! $Id: ds1302.c,v 1.14 2004/08/24 06:48:43 starvik Exp $ +*! $Id: ds1302.c,v 1.18 2005/01/24 09:11:26 mikaelam Exp $ *! *!***************************************************************************/ @@ -139,12 +148,14 @@ #include #include #include +#include #include #include #include #include #include +#include #define RTC_MAJOR_NR 121 /* local major, change later */ @@ -320,7 +331,6 @@ get_rtc_time(struct rtc_time *rtc_tm) unsigned long flags; local_irq_save(flags); - local_irq_disable(); rtc_tm->tm_sec = CMOS_READ(RTC_SECONDS); rtc_tm->tm_min = CMOS_READ(RTC_MINUTES); @@ -358,7 +368,7 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { - unsigned long flags; + unsigned long flags; switch(cmd) { case RTC_RD_TIME: /* read the time/date from RTC */ @@ -382,7 +392,7 @@ rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd, return -EPERM; if (copy_from_user(&rtc_tm, (struct rtc_time*)arg, sizeof(struct rtc_time))) - return -EFAULT; + return -EFAULT; yrs = rtc_tm.tm_year + 1900; mon = rtc_tm.tm_mon + 1; /* tm_mon starts at zero */ @@ -419,7 +429,6 @@ rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd, BIN_TO_BCD(yrs); local_irq_save(flags); - local_irq_disable(); CMOS_WRITE(yrs, RTC_YEAR); CMOS_WRITE(mon, RTC_MONTH); CMOS_WRITE(day, RTC_DAY_OF_MONTH); @@ -438,7 +447,7 @@ rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd, case RTC_SET_CHARGE: /* set the RTC TRICKLE CHARGE register */ { - int tcs_val; + int tcs_val; if (!capable(CAP_SYS_TIME)) return -EPERM; @@ -492,8 +501,8 @@ print_rtc_status(void) /* The various file operations we support. */ static struct file_operations rtc_fops = { - .owner = THIS_MODULE, - .ioctl = rtc_ioctl, + .owner = THIS_MODULE, + .ioctl = rtc_ioctl, }; /* Probe for the chip by writing something to its RAM and try reading it back. */ @@ -532,7 +541,7 @@ ds1302_probe(void) "PB", #endif CONFIG_ETRAX_DS1302_RSTBIT); - print_rtc_status(); + print_rtc_status(); retval = 1; } else { stop(); @@ -548,7 +557,9 @@ ds1302_probe(void) int __init ds1302_init(void) { +#ifdef CONFIG_ETRAX_I2C i2c_init(); +#endif if (!ds1302_probe()) { #ifdef CONFIG_ETRAX_DS1302_RST_ON_GENERIC_PORT @@ -558,25 +569,42 @@ ds1302_init(void) * * Make sure that R_GEN_CONFIG is setup correct. */ - genconfig_shadow = ((genconfig_shadow & - ~IO_MASK(R_GEN_CONFIG, ata)) | - (IO_STATE(R_GEN_CONFIG, ata, select))); - *R_GEN_CONFIG = genconfig_shadow; + /* Allocating the ATA interface will grab almost all + * pins in I/O groups a, b, c and d. A consequence of + * allocating the ATA interface is that the fixed + * interfaces shared RAM, parallel port 0, parallel + * port 1, parallel port W, SCSI-8 port 0, SCSI-8 port + * 1, SCSI-W, serial port 2, serial port 3, + * synchronous serial port 3 and USB port 2 and almost + * all GPIO pins on port g cannot be used. + */ + if (cris_request_io_interface(if_ata, "ds1302/ATA")) { + printk(KERN_WARNING "ds1302: Failed to get IO interface\n"); + return -1; + } + #elif CONFIG_ETRAX_DS1302_RSTBIT == 0 - - /* Set the direction of this bit to out. */ - genconfig_shadow = ((genconfig_shadow & - ~IO_MASK(R_GEN_CONFIG, g0dir)) | - (IO_STATE(R_GEN_CONFIG, g0dir, out))); - *R_GEN_CONFIG = genconfig_shadow; + if (cris_io_interface_allocate_pins(if_gpio_grp_a, + 'g', + CONFIG_ETRAX_DS1302_RSTBIT, + CONFIG_ETRAX_DS1302_RSTBIT)) { + printk(KERN_WARNING "ds1302: Failed to get IO interface\n"); + return -1; + } + + /* Set the direction of this bit to out. */ + genconfig_shadow = ((genconfig_shadow & + ~IO_MASK(R_GEN_CONFIG, g0dir)) | + (IO_STATE(R_GEN_CONFIG, g0dir, out))); + *R_GEN_CONFIG = genconfig_shadow; #endif if (!ds1302_probe()) { printk(KERN_WARNING "%s: RTC not found.\n", ds1302_name); - return -1; + return -1; } #else printk(KERN_WARNING "%s: RTC not found.\n", ds1302_name); - return -1; + return -1; #endif } /* Initialise trickle charger */