Hi
2012/9/6 Daniel Vetter <daniel.vetter at ffwll.ch>:
> By using the new pre_enabel/post_disable functions.
s/enabel/enable
>
> To ensure that we only frob the cpu edp pll while the pipe is off add
> the relevant asserts. Thanks to the new output state staging, this is
> now really easy.
This patch does more than it says. It creates the new pre/post
enable/disable functions, but it also replaces the dpms connector
function with the default intel_connector_dpms (because after removing
the edp enable/disable code from the dpms function, it will look
almost exactly like intel_connector_dpms). Ideally this should be 2
patches: first do the pre/post enable/disable dance, then switch the
specialized dpms with the generic one. The main reason to split this
in 2 patches is to make it easier to reviewers understand what's going
on, so they can review faster without trying to discover why you
switched the dpms function. But since you've already got a reviewer,
you should at least write about the dpms change in the commit message.
With the typo fixed and at least a small sentence on the commit
message explaining the replacement of intel_dp_dpms with
intel_connector_dpms:
Reviewed-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
>
> Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> drivers/gpu/drm/i915/intel_dp.c | 74 +++++++++++++++--------------------------
> 1 file changed, 27 insertions(+), 47 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index c59710d..c72d4f3 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -808,9 +808,6 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
> }
> }
>
> -static void ironlake_edp_pll_on(struct drm_encoder *encoder);
> -static void ironlake_edp_pll_off(struct drm_encoder *encoder);
> -
> static void
> intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
> struct drm_display_mode *adjusted_mode)
> @@ -821,14 +818,6 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
> struct drm_crtc *crtc = intel_dp->base.base.crtc;
> struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
>
> - /* Turn on the eDP PLL if needed */
> - if (is_edp(intel_dp)) {
> - if (!is_pch_edp(intel_dp))
> - ironlake_edp_pll_on(encoder);
> - else
> - ironlake_edp_pll_off(encoder);
> - }
> -
> /*
> * There are four kinds of DP registers:
> *
> @@ -1191,12 +1180,16 @@ static void ironlake_edp_backlight_off(struct intel_dp *intel_dp)
> msleep(intel_dp->backlight_off_delay);
> }
>
> -static void ironlake_edp_pll_on(struct drm_encoder *encoder)
> +static void ironlake_edp_pll_on(struct intel_dp *intel_dp)
> {
> - struct drm_device *dev = encoder->dev;
> + struct drm_device *dev = intel_dp->base.base.dev;
> + struct drm_crtc *crtc = intel_dp->base.base.crtc;
> struct drm_i915_private *dev_priv = dev->dev_private;
> u32 dpa_ctl;
>
> + assert_pipe_disabled(dev_priv,
> + to_intel_crtc(crtc)->pipe);
> +
> DRM_DEBUG_KMS("\n");
> dpa_ctl = I915_READ(DP_A);
> dpa_ctl |= DP_PLL_ENABLE;
> @@ -1205,12 +1198,16 @@ static void ironlake_edp_pll_on(struct drm_encoder *encoder)
> udelay(200);
> }
>
> -static void ironlake_edp_pll_off(struct drm_encoder *encoder)
> +static void ironlake_edp_pll_off(struct intel_dp *intel_dp)
> {
> - struct drm_device *dev = encoder->dev;
> + struct drm_device *dev = intel_dp->base.base.dev;
> + struct drm_crtc *crtc = intel_dp->base.base.crtc;
> struct drm_i915_private *dev_priv = dev->dev_private;
> u32 dpa_ctl;
>
> + assert_pipe_disabled(dev_priv,
> + to_intel_crtc(crtc)->pipe);
> +
> dpa_ctl = I915_READ(DP_A);
> dpa_ctl &= ~DP_PLL_ENABLE;
> I915_WRITE(DP_A, dpa_ctl);
> @@ -1309,6 +1306,14 @@ static void intel_disable_dp(struct intel_encoder *encoder)
> intel_dp_link_down(intel_dp);
> }
>
> +static void intel_post_disable_dp(struct intel_encoder *encoder)
> +{
> + struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
> +
> + if (is_cpu_edp(intel_dp))
> + ironlake_edp_pll_off(intel_dp);
> +}
> +
> static void intel_enable_dp(struct intel_encoder *encoder)
> {
> struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
> @@ -1328,39 +1333,12 @@ static void intel_enable_dp(struct intel_encoder *encoder)
> ironlake_edp_backlight_on(intel_dp);
> }
>
> -static void
> -intel_dp_dpms(struct drm_connector *connector, int mode)
> +static void intel_pre_enable_dp(struct intel_encoder *encoder)
> {
> - struct intel_dp *intel_dp = intel_attached_dp(connector);
> -
> - /* DP supports only 2 dpms states. */
> - if (mode != DRM_MODE_DPMS_ON)
> - mode = DRM_MODE_DPMS_OFF;
> -
> - if (mode == connector->dpms)
> - return;
> -
> - connector->dpms = mode;
> -
> - /* Only need to change hw state when actually enabled */
> - if (!intel_dp->base.base.crtc) {
> - intel_dp->base.connectors_active = false;
> - return;
> - }
> -
> - if (mode != DRM_MODE_DPMS_ON) {
> - intel_encoder_dpms(&intel_dp->base, mode);
> -
> - if (is_cpu_edp(intel_dp))
> - ironlake_edp_pll_off(&intel_dp->base.base);
> - } else {
> - if (is_cpu_edp(intel_dp))
> - ironlake_edp_pll_on(&intel_dp->base.base);
> -
> - intel_encoder_dpms(&intel_dp->base, mode);
> - }
> + struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
>
> - intel_modeset_check_state(connector->dev);
> + if (is_cpu_edp(intel_dp))
> + ironlake_edp_pll_on(intel_dp);
> }
>
> /*
> @@ -2391,7 +2369,7 @@ static const struct drm_encoder_helper_funcs intel_dp_helper_funcs = {
> };
>
> static const struct drm_connector_funcs intel_dp_connector_funcs = {
> - .dpms = intel_dp_dpms,
> + .dpms = intel_connector_dpms,
> .detect = intel_dp_detect,
> .fill_modes = drm_helper_probe_single_connector_modes,
> .set_property = intel_dp_set_property,
> @@ -2522,7 +2500,9 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
> drm_sysfs_connector_add(connector);
>
> intel_encoder->enable = intel_enable_dp;
> + intel_encoder->pre_enable = intel_pre_enable_dp;
> intel_encoder->disable = intel_disable_dp;
> + intel_encoder->post_disable = intel_post_disable_dp;
> intel_encoder->get_hw_state = intel_dp_get_hw_state;
> intel_connector->get_hw_state = intel_connector_get_hw_state;
>
> --
> 1.7.11.2
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Paulo Zanoni
