| Message ID | 1310731501-13078-12-git-send-email-tarun.kanti@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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@ti.com> > --- > 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@ti.com> Regards Santosh -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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); +} + static void omap_dm_timer_wait_for_reset(struct omap_dm_timer *timer) { int c; diff --git a/arch/arm/plat-omap/include/plat/dmtimer.h b/arch/arm/plat-omap/include/plat/dmtimer.h index 6e34094..9a2d7e3 100644 --- a/arch/arm/plat-omap/include/plat/dmtimer.h +++ b/arch/arm/plat-omap/include/plat/dmtimer.h @@ -234,6 +234,29 @@ int omap_dm_timers_active(void); #define MAX_WRITE_PEND_WAIT 10000 /* 10ms timeout delay */ +struct timer_regs { + u32 tidr; + u32 tiocp_cfg; + u32 tistat; + u32 tisr; + u32 tier; + u32 twer; + u32 tclr; + u32 tcrr; + u32 tldr; + u32 ttrg; + u32 twps; + u32 tmar; + u32 tcar1; + u32 tsicr; + u32 tcar2; + u32 tpir; + u32 tnir; + u32 tcvr; + u32 tocr; + u32 towr; +}; + struct omap_dm_timer { unsigned long phys_base; int id; @@ -245,6 +268,7 @@ struct omap_dm_timer { unsigned posted:1; u8 func_offset; u8 intr_offset; + struct timer_regs context; struct platform_device *pdev; struct list_head node; };
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@ti.com> --- arch/arm/plat-omap/dmtimer.c | 48 +++++++++++++++++++++++++++++ arch/arm/plat-omap/include/plat/dmtimer.h | 24 ++++++++++++++ 2 files changed, 72 insertions(+), 0 deletions(-)