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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-10 14:48:43 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-10 14:48:43 -0700 |
commit | 0f166396e7e8931bb4acfd1a6ea1bd4f0b43f1dd (patch) | |
tree | 6279fa70695a4c56b7e935018a4c0fc1dfa82e68 /arch/mips/lasat/ds1603.c | |
parent | 5f60cfd932b42c69ed3226400cb5eab152576c3a (diff) | |
parent | 105b1bca4d7bed85bb296f7e7caec2fc643e9fbf (diff) |
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (62 commits)
[MIPS] PNX8550: Cleanup proc code.
[MIPS] WRPPMC: Fix build.
[MIPS] Yosemite: Fix modpost warnings.
[MIPS] Change names of local variables to silence sparse
[MIPS] SB1: Fix modpost warning.
[MIPS] PNX: Fix modpost warnings.
[MIPS] Alchemy: Fix modpost warnings.
[MIPS] Non-FPAFF: Fix warning.
[MIPS] DEC: Fix modpost warning.
[MIPS] MIPSsim: Enable MIPSsim virtual network driver.
[MIPS] Delete Ocelot 3 support.
[MIPS] remove LASAT Networks platforms support
[MIPS] Early check for SMTC kernel on non-MT processor
[MIPS] Add debugfs files to show fpuemu statistics
[MIPS] Add some debugfs files to debug unaligned accesses
[MIPS] rbtx4938: Fix secondary PCIC and glue internal NICs
[MIPS] tc35815: Load MAC address via platform_device
[MIPS] Move FPU affinity code into separate file.
[MIPS] Make ioremap() work on TX39/49 special unmapped segment
[MIPS] rbtx4938: Update and minimize defconfig
...
Diffstat (limited to 'arch/mips/lasat/ds1603.c')
-rw-r--r-- | arch/mips/lasat/ds1603.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/arch/mips/lasat/ds1603.c b/arch/mips/lasat/ds1603.c deleted file mode 100644 index 7dced67c55e..00000000000 --- a/arch/mips/lasat/ds1603.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * Dallas Semiconductors 1603 RTC driver - * - * Brian Murphy <brian@murphy.dk> - * - */ -#include <linux/kernel.h> -#include <asm/lasat/lasat.h> -#include <linux/delay.h> -#include <asm/lasat/ds1603.h> -#include <asm/time.h> - -#include "ds1603.h" - -#define READ_TIME_CMD 0x81 -#define SET_TIME_CMD 0x80 -#define TRIMMER_SET_CMD 0xC0 -#define TRIMMER_VALUE_MASK 0x38 -#define TRIMMER_SHIFT 3 - -struct ds_defs *ds1603 = NULL; - -/* HW specific register functions */ -static void rtc_reg_write(unsigned long val) -{ - *ds1603->reg = val; -} - -static unsigned long rtc_reg_read(void) -{ - unsigned long tmp = *ds1603->reg; - return tmp; -} - -static unsigned long rtc_datareg_read(void) -{ - unsigned long tmp = *ds1603->data_reg; - return tmp; -} - -static void rtc_nrst_high(void) -{ - rtc_reg_write(rtc_reg_read() | ds1603->rst); -} - -static void rtc_nrst_low(void) -{ - rtc_reg_write(rtc_reg_read() & ~ds1603->rst); -} - -static void rtc_cycle_clock(unsigned long data) -{ - data |= ds1603->clk; - rtc_reg_write(data); - lasat_ndelay(250); - if (ds1603->data_reversed) - data &= ~ds1603->data; - else - data |= ds1603->data; - data &= ~ds1603->clk; - rtc_reg_write(data); - lasat_ndelay(250 + ds1603->huge_delay); -} - -static void rtc_write_databit(unsigned int bit) -{ - unsigned long data = rtc_reg_read(); - if (ds1603->data_reversed) - bit = !bit; - if (bit) - data |= ds1603->data; - else - data &= ~ds1603->data; - - rtc_reg_write(data); - lasat_ndelay(50 + ds1603->huge_delay); - rtc_cycle_clock(data); -} - -static unsigned int rtc_read_databit(void) -{ - unsigned int data; - - data = (rtc_datareg_read() & (1 << ds1603->data_read_shift)) - >> ds1603->data_read_shift; - rtc_cycle_clock(rtc_reg_read()); - return data; -} - -static void rtc_write_byte(unsigned int byte) -{ - int i; - - for (i = 0; i<=7; i++) { - rtc_write_databit(byte & 1L); - byte >>= 1; - } -} - -static void rtc_write_word(unsigned long word) -{ - int i; - - for (i = 0; i<=31; i++) { - rtc_write_databit(word & 1L); - word >>= 1; - } -} - -static unsigned long rtc_read_word(void) -{ - int i; - unsigned long word = 0; - unsigned long shift = 0; - - for (i = 0; i<=31; i++) { - word |= rtc_read_databit() << shift; - shift++; - } - return word; -} - -static void rtc_init_op(void) -{ - rtc_nrst_high(); - - rtc_reg_write(rtc_reg_read() & ~ds1603->clk); - - lasat_ndelay(50); -} - -static void rtc_end_op(void) -{ - rtc_nrst_low(); - lasat_ndelay(1000); -} - -/* interface */ -unsigned long ds1603_read(void) -{ - unsigned long word; - unsigned long flags; - - spin_lock_irqsave(&rtc_lock, flags); - rtc_init_op(); - rtc_write_byte(READ_TIME_CMD); - word = rtc_read_word(); - rtc_end_op(); - spin_unlock_irqrestore(&rtc_lock, flags); - return word; -} - -int ds1603_set(unsigned long time) -{ - unsigned long flags; - - spin_lock_irqsave(&rtc_lock, flags); - rtc_init_op(); - rtc_write_byte(SET_TIME_CMD); - rtc_write_word(time); - rtc_end_op(); - spin_unlock_irqrestore(&rtc_lock, flags); - - return 0; -} - -void ds1603_set_trimmer(unsigned int trimval) -{ - rtc_init_op(); - rtc_write_byte(((trimval << TRIMMER_SHIFT) & TRIMMER_VALUE_MASK) - | (TRIMMER_SET_CMD)); - rtc_end_op(); -} - -void ds1603_disable(void) -{ - ds1603_set_trimmer(TRIMMER_DISABLE_RTC); -} - -void ds1603_enable(void) -{ - ds1603_set_trimmer(TRIMMER_DEFAULT); -} |