[igt-dev] [PATCH i-g-t v4] tests/i915/i915_pm_dc: Add DC9 igt test
Gupta, Anshuman
anshuman.gupta at intel.com
Tue Feb 23 04:30:12 UTC 2021
> -----Original Message-----
> From: Bhatt, Jigar <jigar.bhatt at intel.com>
> Sent: Monday, February 22, 2021 10:17 AM
> To: igt-dev at lists.freedesktop.org
> Cc: Bhatt, Jigar <jigar.bhatt at intel.com>; Gupta, Anshuman
> <anshuman.gupta at intel.com>
> Subject: [PATCH i-g-t v4] tests/i915/i915_pm_dc: Add DC9 igt test
>
> DC9 igt test validation depends on DC9 Ready and DC{5,6} counters reset.
> When Display Engine enters to DC9, it resets DMC f/w and DC5/DC6 counter.
> We don't have a DC9 counter unlike DC{5,6}, therefore this tests uses DC{5,6}
> counter reset method to validate DC9.
>
> Signed-off-by: Jigar Bhatt <jigar.bhatt at intel.com>
> ---
> tests/i915/i915_pm_dc.c | 31 +++++++++++++++++++++++++++++++
> 1 file changed, 31 insertions(+)
>
> diff --git a/tests/i915/i915_pm_dc.c b/tests/i915/i915_pm_dc.c index
> 30c6024..f901400 100644
> --- a/tests/i915/i915_pm_dc.c
> +++ b/tests/i915/i915_pm_dc.c
> @@ -384,6 +384,32 @@ static void test_dc_state_dpms(data_t *data, int
> dc_flag)
> cleanup_dc_dpms(data);
> }
>
> +static bool check_dc9(uint32_t debugfs_fd, int prev_dc5, int prev_dc6)
> +{
> + /*
> + * since we do not have DC9 Counter,
> + * so we rely on dc5/dc6 counter reset to check if Display Engine was in
> DC9.
> + */
> + return igt_wait((read_dc_counter(debugfs_fd,
> +CHECK_DC5)>prev_dc5 || read_dc_counter(debugfs_fd,
> +CHECK_DC6)>prev_dc6),3000,100); } static void test_dc9_dpms(data_t
> +*data) {
> + require_dc_counter(data->debugfs_fd, CHECK_DC5);
> + require_dc_counter(data->debugfs_fd, CHECK_DC6);
> + int dc5_prev=read_dc_counter(data->debugfs_fd, CHECK_DC5);
> + int dc6_prev=read_dc_counter(data->debugfs_fd, CHECK_DC6);
> + igt_disable_runtime_pm();
> + data->runtime_suspend_disabled = true;
> + dpms_off(data);
You assert here in case dc5/dc6 counters doesn't increase.
Use increased counters for check_dc9 function.
Thanks,
Anshuman Gupta.
> + dpms_on(data);
> + data->runtime_suspend_disabled = false;
> + igt_restore_runtime_pm();
> + igt_setup_runtime_pm(data->drm_fd);
Keep above code in separate function setup_dc9_dpms()
> + dpms_off(data);
> + igt_assert_f(!check_dc9(data->debugfs_fd,dc5_prev,dc6_prev),"Not in
> DC9");
"\n" is missing from the print msg.
> + dpms_on(data);
> +}
> +
> IGT_TEST_DESCRIPTION("These tests validate Display Power DC states"); int
> main(int argc, char *argv[]) { @@ -449,6 +475,11 @@ int main(int argc, char
> *argv[])
> test_dc_state_dpms(&data, CHECK_DC6);
> }
>
> + igt_describe("This test validates display engine entry to DC9 state");
> + igt_subtest("dc9-dpms"){
> + test_dc9_dpms(&data);
> + }
> +
> igt_fixture {
> free(data.pwr_dmn_info);
> close(data.debugfs_fd);
> --
> 2.8.1
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