From d39ef5d5c076377d41c65b69f8452eada2db724d Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Fri, 15 Oct 2021 10:16:24 +0300 Subject: [PATCH] drm/i915: Move intel_ddi_fdi_post_disable() to fdi code MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Reanme intel_ddi_fdi_post_disable() to hsw_fdi_disable() and relocate it next to all the other code dealing with FDI_RX. intel_ddi.c has now been cleansed of FDI_RX. In order to avoid exposing intel_disable_ddi_buf() outside intel_ddi.c we can just open code the DDI_BUF_CTL write. The enable side already has all that stuff open coded so this actually is more symmetric. But we do need to remeber to bring the intel_wait_ddi_buf_idle() call over from inside intel_disable_ddi_buf(). Cc: Dave Airlie Cc: Jani Nikula Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20211015071625.593-9-ville.syrjala@linux.intel.com Reviewed-by: Dave Airlie --- drivers/gpu/drm/i915/display/intel_crt.c | 2 +- drivers/gpu/drm/i915/display/intel_ddi.c | 37 +------------------------------- drivers/gpu/drm/i915/display/intel_ddi.h | 1 + drivers/gpu/drm/i915/display/intel_fdi.c | 37 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/display/intel_fdi.h | 1 + 5 files changed, 41 insertions(+), 37 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_crt.c b/drivers/gpu/drm/i915/display/intel_crt.c index fe807c8..db27ae2 100644 --- a/drivers/gpu/drm/i915/display/intel_crt.c +++ b/drivers/gpu/drm/i915/display/intel_crt.c @@ -264,7 +264,7 @@ static void hsw_post_disable_crt(struct intel_atomic_state *state, lpt_disable_pch_transcoder(dev_priv); lpt_disable_iclkip(dev_priv); - intel_ddi_fdi_post_disable(state, encoder, old_crtc_state, old_conn_state); + hsw_fdi_disable(encoder); drm_WARN_ON(&dev_priv->drm, !old_crtc_state->has_pch_encoder); diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 8bbbeec..ab52eab 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -1939,7 +1939,7 @@ void intel_ddi_enable_clock(struct intel_encoder *encoder, encoder->enable_clock(encoder, crtc_state); } -static void intel_ddi_disable_clock(struct intel_encoder *encoder) +void intel_ddi_disable_clock(struct intel_encoder *encoder) { if (encoder->disable_clock) encoder->disable_clock(encoder); @@ -2867,41 +2867,6 @@ static void intel_ddi_post_disable(struct intel_atomic_state *state, intel_tc_port_put_link(dig_port); } -void intel_ddi_fdi_post_disable(struct intel_atomic_state *state, - struct intel_encoder *encoder, - const struct intel_crtc_state *old_crtc_state, - const struct drm_connector_state *old_conn_state) -{ - struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); - u32 val; - - /* - * Bspec lists this as both step 13 (before DDI_BUF_CTL disable) - * and step 18 (after clearing PORT_CLK_SEL). Based on a BUN, - * step 13 is the correct place for it. Step 18 is where it was - * originally before the BUN. - */ - val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A)); - val &= ~FDI_RX_ENABLE; - intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val); - - intel_disable_ddi_buf(encoder, old_crtc_state); - intel_ddi_disable_clock(encoder); - - val = intel_de_read(dev_priv, FDI_RX_MISC(PIPE_A)); - val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); - val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2); - intel_de_write(dev_priv, FDI_RX_MISC(PIPE_A), val); - - val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A)); - val &= ~FDI_PCDCLK; - intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val); - - val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A)); - val &= ~FDI_RX_PLL_ENABLE; - intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val); -} - static void trans_port_sync_stop_link_train(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.h b/drivers/gpu/drm/i915/display/intel_ddi.h index d6971717..6f4551c 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.h +++ b/drivers/gpu/drm/i915/display/intel_ddi.h @@ -30,6 +30,7 @@ void intel_ddi_fdi_post_disable(struct intel_atomic_state *state, const struct drm_connector_state *old_conn_state); void intel_ddi_enable_clock(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state); +void intel_ddi_disable_clock(struct intel_encoder *encoder); void intel_ddi_get_clock(struct intel_encoder *encoder, struct intel_crtc_state *crtc_state, struct intel_shared_dpll *pll); diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c index d1c1600..2b5f80f 100644 --- a/drivers/gpu/drm/i915/display/intel_fdi.c +++ b/drivers/gpu/drm/i915/display/intel_fdi.c @@ -886,6 +886,43 @@ void hsw_fdi_link_train(struct intel_encoder *encoder, DP_TP_CTL_ENABLE); } +void hsw_fdi_disable(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + u32 val; + + /* + * Bspec lists this as both step 13 (before DDI_BUF_CTL disable) + * and step 18 (after clearing PORT_CLK_SEL). Based on a BUN, + * step 13 is the correct place for it. Step 18 is where it was + * originally before the BUN. + */ + val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A)); + val &= ~FDI_RX_ENABLE; + intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val); + + val = intel_de_read(dev_priv, DDI_BUF_CTL(PORT_E)); + val &= ~DDI_BUF_CTL_ENABLE; + intel_de_write(dev_priv, DDI_BUF_CTL(PORT_E), val); + + intel_wait_ddi_buf_idle(dev_priv, PORT_E); + + intel_ddi_disable_clock(encoder); + + val = intel_de_read(dev_priv, FDI_RX_MISC(PIPE_A)); + val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); + val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2); + intel_de_write(dev_priv, FDI_RX_MISC(PIPE_A), val); + + val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A)); + val &= ~FDI_PCDCLK; + intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val); + + val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A)); + val &= ~FDI_RX_PLL_ENABLE; + intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val); +} + void ilk_fdi_pll_enable(const struct intel_crtc_state *crtc_state) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); diff --git a/drivers/gpu/drm/i915/display/intel_fdi.h b/drivers/gpu/drm/i915/display/intel_fdi.h index 5a36173..1cdb861 100644 --- a/drivers/gpu/drm/i915/display/intel_fdi.h +++ b/drivers/gpu/drm/i915/display/intel_fdi.h @@ -23,6 +23,7 @@ void ilk_fdi_pll_enable(const struct intel_crtc_state *crtc_state); void intel_fdi_init_hook(struct drm_i915_private *dev_priv); void hsw_fdi_link_train(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state); +void hsw_fdi_disable(struct intel_encoder *encoder); void intel_fdi_pll_freq_update(struct drm_i915_private *i915); void intel_fdi_link_train(struct intel_crtc *crtc, -- 2.7.4