From: Tanmay Shah <tanmay@codeaurora.org> To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, robdclark@gmail.com Cc: swboyd@chromium.org, linux-arm-msm@vger.kernel.org, seanpaul@chromium.org, daniel@ffwll.ch, airlied@linux.ie, aravindh@codeaurora.org, abhinavk@codeaurora.org, khsieh@codeaurora.org, Chandan Uddaraju <chandanu@codeaurora.org>, Vara Reddy <varar@codeaurora.org>, Tanmay Shah <tanmay@codeaurora.org>, Jani Nikula <jani.nikula@intel.com> Subject: [PATCH v11 1/5] drm: add constant N value in helper file Date: Mon, 17 Aug 2020 22:11:33 -0700 [thread overview] Message-ID: <20200818051137.21478-2-tanmay@codeaurora.org> (raw) In-Reply-To: <20200818051137.21478-1-tanmay@codeaurora.org> From: Chandan Uddaraju <chandanu@codeaurora.org> The constant N value (0x8000) is used by i915 DP driver. Define this value in dp helper header file to use in multiple Display Port drivers. Change i915 driver accordingly. Change in v6: Change commit message Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org> Signed-off-by: Vara Reddy <varar@codeaurora.org> Signed-off-by: Tanmay Shah <tanmay@codeaurora.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Acked-by: Jani Nikula <jani.nikula@intel.com> --- drivers/gpu/drm/i915/display/intel_display.c | 2 +- include/drm/drm_dp_helper.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 729ec6e0d43a..10b8310f290b 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -8114,7 +8114,7 @@ static void compute_m_n(unsigned int m, unsigned int n, * which the devices expect also in synchronous clock mode. */ if (constant_n) - *ret_n = 0x8000; + *ret_n = DP_LINK_CONSTANT_N_VALUE; else *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX); diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index e47dc22ebf50..a31d7aebb8b8 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1134,6 +1134,7 @@ #define DP_MST_PHYSICAL_PORT_0 0 #define DP_MST_LOGICAL_PORT_0 8 +#define DP_LINK_CONSTANT_N_VALUE 0x8000 #define DP_LINK_STATUS_SIZE 6 bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], int lane_count); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
WARNING: multiple messages have this Message-ID (diff)
From: Tanmay Shah <tanmay@codeaurora.org> To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, robdclark@gmail.com Cc: airlied@linux.ie, linux-arm-msm@vger.kernel.org, abhinavk@codeaurora.org, swboyd@chromium.org, khsieh@codeaurora.org, Jani Nikula <jani.nikula@intel.com>, seanpaul@chromium.org, Tanmay Shah <tanmay@codeaurora.org>, Vara Reddy <varar@codeaurora.org>, aravindh@codeaurora.org, Chandan Uddaraju <chandanu@codeaurora.org> Subject: [PATCH v11 1/5] drm: add constant N value in helper file Date: Mon, 17 Aug 2020 22:11:33 -0700 [thread overview] Message-ID: <20200818051137.21478-2-tanmay@codeaurora.org> (raw) In-Reply-To: <20200818051137.21478-1-tanmay@codeaurora.org> From: Chandan Uddaraju <chandanu@codeaurora.org> The constant N value (0x8000) is used by i915 DP driver. Define this value in dp helper header file to use in multiple Display Port drivers. Change i915 driver accordingly. Change in v6: Change commit message Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org> Signed-off-by: Vara Reddy <varar@codeaurora.org> Signed-off-by: Tanmay Shah <tanmay@codeaurora.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Acked-by: Jani Nikula <jani.nikula@intel.com> --- drivers/gpu/drm/i915/display/intel_display.c | 2 +- include/drm/drm_dp_helper.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 729ec6e0d43a..10b8310f290b 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -8114,7 +8114,7 @@ static void compute_m_n(unsigned int m, unsigned int n, * which the devices expect also in synchronous clock mode. */ if (constant_n) - *ret_n = 0x8000; + *ret_n = DP_LINK_CONSTANT_N_VALUE; else *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX); diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index e47dc22ebf50..a31d7aebb8b8 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1134,6 +1134,7 @@ #define DP_MST_PHYSICAL_PORT_0 0 #define DP_MST_LOGICAL_PORT_0 8 +#define DP_LINK_CONSTANT_N_VALUE 0x8000 #define DP_LINK_STATUS_SIZE 6 bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE], int lane_count); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2020-08-18 5:12 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-18 5:11 [PATCH v11 0/5] Add support for DisplayPort driver on SnapDragon Tanmay Shah 2020-08-18 5:11 ` Tanmay Shah 2020-08-18 5:11 ` Tanmay Shah [this message] 2020-08-18 5:11 ` [PATCH v11 1/5] drm: add constant N value in helper file Tanmay Shah 2020-08-18 5:11 ` [PATCH v11 2/5] drm/msm/dp: add displayPort driver support Tanmay Shah 2020-08-18 5:11 ` Tanmay Shah 2020-08-18 5:11 ` [PATCH v11 3/5] drm/msm/dp: add support for DP PLL driver Tanmay Shah 2020-08-18 5:11 ` Tanmay Shah 2020-08-18 5:11 ` [PATCH v11 4/5] drm/msm/dpu: add display port support in DPU Tanmay Shah 2020-08-18 5:11 ` Tanmay Shah 2020-08-18 5:11 ` [PATCH v11 5/5] drm/msm/dp: Add Display Port HPD feature Tanmay Shah 2020-08-18 5:11 ` Tanmay Shah
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