[MIPS] txx9tmr clockevent/clocksource driver

Convert jmr3927_clock_event_device to more generic
txx9tmr_clock_event_device which supports one-shot mode.  The
txx9tmr_clock_event_device can be used for TX49 too if the cp0 timer
interrupt was not available.

Convert jmr3927_hpt_read to txx9_clocksource driver which does not
depends jiffies anymore.  The txx9_clocksource itself can be used for
TX49, but normally TX49 uses higher precision clocksource_mips.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/include/asm-mips/txx9tmr.h b/include/asm-mips/txx9tmr.h
new file mode 100644
index 0000000000..67f70a8f09
--- /dev/null
+++ b/include/asm-mips/txx9tmr.h
@@ -0,0 +1,67 @@
+/*
+ * include/asm-mips/txx9tmr.h
+ * TX39/TX49 timer controller definitions.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __ASM_TXX9TMR_H
+#define __ASM_TXX9TMR_H
+
+#include <linux/types.h>
+
+struct txx9_tmr_reg {
+        u32 tcr;
+        u32 tisr;
+        u32 cpra;
+        u32 cprb;
+        u32 itmr;
+        u32 unused0[3];
+        u32 ccdr;
+        u32 unused1[3];
+        u32 pgmr;
+        u32 unused2[3];
+        u32 wtmr;
+        u32 unused3[43];
+        u32 trr;
+};
+
+/* TMTCR : Timer Control */
+#define TXx9_TMTCR_TCE          0x00000080
+#define TXx9_TMTCR_CCDE         0x00000040
+#define TXx9_TMTCR_CRE          0x00000020
+#define TXx9_TMTCR_ECES         0x00000008
+#define TXx9_TMTCR_CCS          0x00000004
+#define TXx9_TMTCR_TMODE_MASK   0x00000003
+#define TXx9_TMTCR_TMODE_ITVL   0x00000000
+#define TXx9_TMTCR_TMODE_PGEN   0x00000001
+#define TXx9_TMTCR_TMODE_WDOG   0x00000002
+
+/* TMTISR : Timer Int. Status */
+#define TXx9_TMTISR_TPIBS       0x00000004
+#define TXx9_TMTISR_TPIAS       0x00000002
+#define TXx9_TMTISR_TIIS        0x00000001
+
+/* TMITMR : Interval Timer Mode */
+#define TXx9_TMITMR_TIIE        0x00008000
+#define TXx9_TMITMR_TZCE        0x00000001
+
+/* TMWTMR : Watchdog Timer Mode */
+#define TXx9_TMWTMR_TWIE        0x00008000
+#define TXx9_TMWTMR_WDIS        0x00000080
+#define TXx9_TMWTMR_TWC         0x00000001
+
+void txx9_clocksource_init(unsigned long baseaddr,
+                           unsigned int imbusclk);
+void txx9_clockevent_init(unsigned long baseaddr, int irq,
+                          unsigned int imbusclk);
+void txx9_tmr_init(unsigned long baseaddr);
+
+#ifdef CONFIG_CPU_TX39XX
+#define TXX9_TIMER_BITS 24
+#else
+#define TXX9_TIMER_BITS 32
+#endif
+
+#endif /* __ASM_TXX9TMR_H */