From patchwork Thu Jun 18 05:30:55 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: vandana.kannan@intel.com X-Patchwork-Id: 6633071 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 601389F3D1 for ; Thu, 18 Jun 2015 05:06:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 39F5020868 for ; Thu, 18 Jun 2015 05:06:28 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id B2E7F206B0 for ; Thu, 18 Jun 2015 05:06:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C87C06E1D3; Wed, 17 Jun 2015 22:06:24 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id 92AE96E1D3 for ; Wed, 17 Jun 2015 22:06:23 -0700 (PDT) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP; 17 Jun 2015 22:06:11 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,637,1427785200"; d="scan'208";a="510162128" Received: from vkannan-desktop.iind.intel.com ([10.223.25.49]) by FMSMGA003.fm.intel.com with ESMTP; 17 Jun 2015 22:06:09 -0700 From: Vandana Kannan To: intel-gfx@lists.freedesktop.org Date: Thu, 18 Jun 2015 11:00:55 +0530 Message-Id: <1434605455-6923-1-git-send-email-vandana.kannan@intel.com> X-Mailer: git-send-email 2.0.1 In-Reply-To: <55813C38.6040000@intel.com> References: <55813C38.6040000@intel.com> Subject: [Intel-gfx] [PATCH v5] drm/i915/bxt: eDP Panel Power sequencing X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Changes for BXT - added a IS_BROXTON check to use the macro related to PPS registers for BXT. BXT does not have PP_DIV register. Making changes to handle this. Second set of PPS registers have been defined but will be used when VBT provides a selection between the 2 sets of registers. v2: [Jani] Added 2nd set of PPS registers and the macro Jani's review comments - remove reference in i915_suspend.c - Use BXT PP macro Squashing all PPS related patches into one. v3: Jani's review comments addressed - Use pp_ctl instead of pp - ironlake_get_pp_control() is not required for BXT - correct the use of && in the print statement - drop the shift in the print statement v4: Jani's comments - modify ironlake_get_pp_control() - dont set unlock key for bxt v5: Sonika's comments addressed - check alignment - move pp_ctrl_reg write (after ironlake_get_pp_control()) to !IS_BROXTON case. - check before subtracting 1 for t11_t12 Signed-off-by: Vandana Kannan Signed-off-by: A.Sunil Kamath Reviewed-by: Sonika Jindal --- drivers/gpu/drm/i915/i915_reg.h | 13 +++++++ drivers/gpu/drm/i915/intel_dp.c | 82 ++++++++++++++++++++++++++++++++--------- 2 files changed, 78 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 0b979ad..27eb49e 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6391,6 +6391,8 @@ enum skl_disp_power_wells { #define PCH_PP_CONTROL 0xc7204 #define PANEL_UNLOCK_REGS (0xabcd << 16) #define PANEL_UNLOCK_MASK (0xffff << 16) +#define BXT_POWER_CYCLE_DELAY_MASK (0x1f0) +#define BXT_POWER_CYCLE_DELAY_SHIFT 4 #define EDP_FORCE_VDD (1 << 3) #define EDP_BLC_ENABLE (1 << 2) #define PANEL_POWER_RESET (1 << 1) @@ -6419,6 +6421,17 @@ enum skl_disp_power_wells { #define PANEL_POWER_CYCLE_DELAY_MASK (0x1f) #define PANEL_POWER_CYCLE_DELAY_SHIFT 0 +/* BXT PPS changes - 2nd set of PPS registers */ +#define _BXT_PP_STATUS2 0xc7300 +#define _BXT_PP_CONTROL2 0xc7304 +#define _BXT_PP_ON_DELAYS2 0xc7308 +#define _BXT_PP_OFF_DELAYS2 0xc730c + +#define BXT_PP_STATUS(n) ((!n) ? PCH_PP_STATUS : _BXT_PP_STATUS2) +#define BXT_PP_CONTROL(n) ((!n) ? PCH_PP_CONTROL : _BXT_PP_CONTROL2) +#define BXT_PP_ON_DELAYS(n) ((!n) ? PCH_PP_ON_DELAYS : _BXT_PP_ON_DELAYS2) +#define BXT_PP_OFF_DELAYS(n) ((!n) ? PCH_PP_OFF_DELAYS : _BXT_PP_OFF_DELAYS2) + #define PCH_DP_B 0xe4100 #define PCH_DPB_AUX_CH_CTL 0xe4110 #define PCH_DPB_AUX_CH_DATA1 0xe4114 diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index f52eef1..c2145e7 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -567,7 +567,9 @@ static u32 _pp_ctrl_reg(struct intel_dp *intel_dp) { struct drm_device *dev = intel_dp_to_dev(intel_dp); - if (HAS_PCH_SPLIT(dev)) + if (IS_BROXTON(dev)) + return BXT_PP_CONTROL(0); + else if (HAS_PCH_SPLIT(dev)) return PCH_PP_CONTROL; else return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp)); @@ -577,7 +579,9 @@ static u32 _pp_stat_reg(struct intel_dp *intel_dp) { struct drm_device *dev = intel_dp_to_dev(intel_dp); - if (HAS_PCH_SPLIT(dev)) + if (IS_BROXTON(dev)) + return BXT_PP_STATUS(0); + else if (HAS_PCH_SPLIT(dev)) return PCH_PP_STATUS; else return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp)); @@ -1702,8 +1706,10 @@ static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) lockdep_assert_held(&dev_priv->pps_mutex); control = I915_READ(_pp_ctrl_reg(intel_dp)); - control &= ~PANEL_UNLOCK_MASK; - control |= PANEL_UNLOCK_REGS; + if (!IS_BROXTON(dev)) { + control &= ~PANEL_UNLOCK_MASK; + control |= PANEL_UNLOCK_REGS; + } return control; } @@ -5092,8 +5098,8 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev, struct drm_i915_private *dev_priv = dev->dev_private; struct edp_power_seq cur, vbt, spec, *final = &intel_dp->pps_delays; - u32 pp_on, pp_off, pp_div, pp; - int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg; + u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0; + int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg = 0; lockdep_assert_held(&dev_priv->pps_mutex); @@ -5101,7 +5107,16 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev, if (final->t11_t12 != 0) return; - if (HAS_PCH_SPLIT(dev)) { + if (IS_BROXTON(dev)) { + /* + * TODO: BXT has 2 sets of PPS registers. + * Correct Register for Broxton need to be identified + * using VBT. hardcoding for now + */ + pp_ctrl_reg = BXT_PP_CONTROL(0); + pp_on_reg = BXT_PP_ON_DELAYS(0); + pp_off_reg = BXT_PP_OFF_DELAYS(0); + } else if (HAS_PCH_SPLIT(dev)) { pp_ctrl_reg = PCH_PP_CONTROL; pp_on_reg = PCH_PP_ON_DELAYS; pp_off_reg = PCH_PP_OFF_DELAYS; @@ -5117,12 +5132,14 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev, /* Workaround: Need to write PP_CONTROL with the unlock key as * the very first thing. */ - pp = ironlake_get_pp_control(intel_dp); - I915_WRITE(pp_ctrl_reg, pp); + pp_ctl = ironlake_get_pp_control(intel_dp); pp_on = I915_READ(pp_on_reg); pp_off = I915_READ(pp_off_reg); - pp_div = I915_READ(pp_div_reg); + if (!IS_BROXTON(dev)) { + I915_WRITE(pp_ctrl_reg, pp_ctl); + pp_div = I915_READ(pp_div_reg); + } /* Pull timing values out of registers */ cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> @@ -5137,8 +5154,17 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev, cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> PANEL_POWER_DOWN_DELAY_SHIFT; - cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> + if (IS_BROXTON(dev)) { + u16 tmp = (pp_ctl & BXT_POWER_CYCLE_DELAY_MASK) >> + BXT_POWER_CYCLE_DELAY_SHIFT; + if (tmp > 0) + cur.t11_t12 = (tmp - 1) * 1000; + else + cur.t11_t12 = 0; + } else { + cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; + } DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); @@ -5195,13 +5221,23 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, struct drm_i915_private *dev_priv = dev->dev_private; u32 pp_on, pp_off, pp_div, port_sel = 0; int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); - int pp_on_reg, pp_off_reg, pp_div_reg; + int pp_on_reg, pp_off_reg, pp_div_reg = 0, pp_ctrl_reg; enum port port = dp_to_dig_port(intel_dp)->port; const struct edp_power_seq *seq = &intel_dp->pps_delays; lockdep_assert_held(&dev_priv->pps_mutex); - if (HAS_PCH_SPLIT(dev)) { + if (IS_BROXTON(dev)) { + /* + * TODO: BXT has 2 sets of PPS registers. + * Correct Register for Broxton need to be identified + * using VBT. hardcoding for now + */ + pp_ctrl_reg = BXT_PP_CONTROL(0); + pp_on_reg = BXT_PP_ON_DELAYS(0); + pp_off_reg = BXT_PP_OFF_DELAYS(0); + + } else if (HAS_PCH_SPLIT(dev)) { pp_on_reg = PCH_PP_ON_DELAYS; pp_off_reg = PCH_PP_OFF_DELAYS; pp_div_reg = PCH_PP_DIVISOR; @@ -5227,9 +5263,16 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); /* Compute the divisor for the pp clock, simply match the Bspec * formula. */ - pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; - pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) - << PANEL_POWER_CYCLE_DELAY_SHIFT); + if (IS_BROXTON(dev)) { + pp_div = I915_READ(pp_ctrl_reg); + pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK; + pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000) + << BXT_POWER_CYCLE_DELAY_SHIFT); + } else { + pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; + pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) + << PANEL_POWER_CYCLE_DELAY_SHIFT); + } /* Haswell doesn't have any port selection bits for the panel * power sequencer any more. */ @@ -5246,11 +5289,16 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, I915_WRITE(pp_on_reg, pp_on); I915_WRITE(pp_off_reg, pp_off); - I915_WRITE(pp_div_reg, pp_div); + if (IS_BROXTON(dev)) + I915_WRITE(pp_ctrl_reg, pp_div); + else + I915_WRITE(pp_div_reg, pp_div); DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", I915_READ(pp_on_reg), I915_READ(pp_off_reg), + IS_BROXTON(dev) ? + (I915_READ(pp_ctrl_reg) & BXT_POWER_CYCLE_DELAY_MASK) : I915_READ(pp_div_reg)); }