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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-08-05 00:52:41 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-05 11:44:29 -0700 |
| commit | bc609cb47fb2e74654e23cef0a1d4db38b6570a3 (patch) | |
| tree | 64cc0d29522eb5d40466bc16d35f50826e51ccaf /drivers/hv | |
| parent | a5cca686ce0ef4909deaee4ed46dd991e3a9ece4 (diff) | |
| download | linux-bc609cb47fb2e74654e23cef0a1d4db38b6570a3.tar.gz | |
drivers/hv: Migrate to new 'set-state' interface
Migrate hv driver to the new 'set-state' interface provided by clockevents core, the earlier 'set-mode' interface is marked obsolete now. This also enables us to implement callbacks for new states of clockevent devices, for example: ONESHOT_STOPPED. Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: devel@linuxdriverproject.org Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/hv.c | 45 |
1 files changed, 19 insertions, 26 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index fd93cfde96d0..c641faf92e60 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -274,7 +274,7 @@ static int hv_ce_set_next_event(unsigned long delta, { cycle_t current_tick; - WARN_ON(evt->mode != CLOCK_EVT_MODE_ONESHOT); + WARN_ON(!clockevent_state_oneshot(evt)); rdmsrl(HV_X64_MSR_TIME_REF_COUNT, current_tick); current_tick += delta; @@ -282,31 +282,24 @@ static int hv_ce_set_next_event(unsigned long delta, return 0; } -static void hv_ce_setmode(enum clock_event_mode mode, - struct clock_event_device *evt) +static int hv_ce_shutdown(struct clock_event_device *evt) +{ + wrmsrl(HV_X64_MSR_STIMER0_COUNT, 0); + wrmsrl(HV_X64_MSR_STIMER0_CONFIG, 0); + + return 0; +} + +static int hv_ce_set_oneshot(struct clock_event_device *evt) { union hv_timer_config timer_cfg; - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - /* unsupported */ - break; - - case CLOCK_EVT_MODE_ONESHOT: - timer_cfg.enable = 1; - timer_cfg.auto_enable = 1; - timer_cfg.sintx = VMBUS_MESSAGE_SINT; - wrmsrl(HV_X64_MSR_STIMER0_CONFIG, timer_cfg.as_uint64); - break; - - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - wrmsrl(HV_X64_MSR_STIMER0_COUNT, 0); - wrmsrl(HV_X64_MSR_STIMER0_CONFIG, 0); - break; - case CLOCK_EVT_MODE_RESUME: - break; - } + timer_cfg.enable = 1; + timer_cfg.auto_enable = 1; + timer_cfg.sintx = VMBUS_MESSAGE_SINT; + wrmsrl(HV_X64_MSR_STIMER0_CONFIG, timer_cfg.as_uint64); + + return 0; } static void hv_init_clockevent_device(struct clock_event_device *dev, int cpu) @@ -321,7 +314,8 @@ static void hv_init_clockevent_device(struct clock_event_device *dev, int cpu) * references to the hv_vmbus module making it impossible to unload. */ - dev->set_mode = hv_ce_setmode; + dev->set_state_shutdown = hv_ce_shutdown; + dev->set_state_oneshot = hv_ce_set_oneshot; dev->set_next_event = hv_ce_set_next_event; } @@ -515,8 +509,7 @@ void hv_synic_cleanup(void *arg) /* Turn off clockevent device */ if (ms_hyperv.features & HV_X64_MSR_SYNTIMER_AVAILABLE) - hv_ce_setmode(CLOCK_EVT_MODE_SHUTDOWN, - hv_context.clk_evt[cpu]); + hv_ce_shutdown(hv_context.clk_evt[cpu]); rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64); |