On Friday 15 July 2011 05:35 PM, Tarun Kanti DebBarma wrote:
Define context register structure and make it member of struct omap_dm_timer.
Also define two routines to save and restore dmtimer context to be used
subsequently.
Signed-off-by: Tarun Kanti DebBarma<tarun.kanti@xxxxxx>
---
arch/arm/plat-omap/dmtimer.c | 48 +++++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/dmtimer.h | 24 ++++++++++++++
2 files changed, 72 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index 8c8cb00..cdef48b 100644
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -87,6 +87,54 @@ static void omap_dm_timer_write_reg(struct omap_dm_timer *timer, u32 reg,
timer->func_offset);
}
+static void omap_timer_save_context(struct omap_dm_timer *timer)
+{
+ timer->context.tiocp_cfg =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_OCP_CFG_REG);
+ timer->context.tistat =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_SYS_STAT_REG);
+ timer->context.tisr =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_STAT_REG);
+ timer->context.tier =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_INT_EN_REG);
+ timer->context.twer =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_WAKEUP_EN_REG);
+ timer->context.tclr =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG);
+ timer->context.tcrr =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_COUNTER_REG);
+ timer->context.tldr =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_LOAD_REG);
+ timer->context.tmar =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_MATCH_REG);
+ timer->context.tsicr =
+ omap_dm_timer_read_reg(timer, OMAP_TIMER_IF_CTRL_REG);
+}
+
+static void omap_timer_restore_context(struct omap_dm_timer *timer)
+{
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_OCP_CFG_REG,
+ timer->context.tiocp_cfg);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_SYS_STAT_REG,
+ timer->context.tistat);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_STAT_REG,
+ timer->context.tisr);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_INT_EN_REG,
+ timer->context.tier);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_WAKEUP_EN_REG,
+ timer->context.twer);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG,
+ timer->context.tclr);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_COUNTER_REG,
+ timer->context.tcrr);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_LOAD_REG,
+ timer->context.tldr);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_MATCH_REG,
+ timer->context.tmar);
+ omap_dm_timer_write_reg(timer, OMAP_TIMER_IF_CTRL_REG,
+ timer->context.tsicr);
+}
+
Looks good.
Take care of ordering of the restore code similar to
GPIO code.
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
Regards
Santosh
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