From patchwork Tue Aug 14 09:53:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Sharma, Shashank" X-Patchwork-Id: 10565229 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 90EF515A6 for ; Tue, 14 Aug 2018 09:46:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7DF7F291AE for ; Tue, 14 Aug 2018 09:46:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 728D42942F; Tue, 14 Aug 2018 09:46:07 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0C2DE291AE for ; Tue, 14 Aug 2018 09:46:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DEC6E6E0DB; Tue, 14 Aug 2018 09:46:05 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 423FE6E060 for ; Tue, 14 Aug 2018 09:46:04 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Aug 2018 02:46:04 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,237,1531810800"; d="scan'208";a="64783026" Received: from shashanks-linuxbox.iind.intel.com ([10.223.161.29]) by orsmga007.jf.intel.com with ESMTP; 14 Aug 2018 02:46:02 -0700 From: Shashank Sharma To: intel-gfx@lists.freedesktop.org Date: Tue, 14 Aug 2018 15:23:24 +0530 Message-Id: <1534240406-10534-7-git-send-email-shashank.sharma@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1534240406-10534-1-git-send-email-shashank.sharma@intel.com> References: <1534240406-10534-1-git-send-email-shashank.sharma@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v10 6/8] drm/i915: Write AVI infoframes for MCA LSPCON X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: "Sharma, Shashank" As LSPCON is a DP branch device, LSPCON vendors define specific methods to pass AVI infoframes to the the chip. This patch adds: - a generic wrapper function for writing AVI infoframes for all LSPCON devices. - a vendor specific function to wrire AVI infoframes into MCA LSPCON devices. V2: Rebase V3: Added r-b from Maarten V4: Rebase V5: Rebase V6: Rebase V7: Fixed checkpatch warnings for alignment V8: Rebase V9: Added the retry logic, with 50ms incremental delays while writing AVI IF V10: Changed the return value check Cc: Imre Deak Cc: Ville Syrjälä Cc: Maarten Lankhorst Reviewed-by: Maarten Lankhorst Signed-off-by: Shashank Sharma --- drivers/gpu/drm/i915/intel_drv.h | 4 ++ drivers/gpu/drm/i915/intel_hdmi.c | 2 + drivers/gpu/drm/i915/intel_lspcon.c | 89 +++++++++++++++++++++++++++++++++++++ 3 files changed, 95 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 509c659..2cc0775 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -2193,6 +2193,10 @@ void intel_color_load_luts(struct drm_crtc_state *crtc_state); bool lspcon_init(struct intel_digital_port *intel_dig_port); void lspcon_resume(struct intel_lspcon *lspcon); void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon); +void lspcon_write_infoframe(struct drm_encoder *encoder, + const struct intel_crtc_state *crtc_state, + unsigned int type, + const void *buf, ssize_t len); void lspcon_set_infoframes(struct drm_encoder *encoder, bool enable, const struct intel_crtc_state *crtc_state, diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 9f2fac8..2e1b6e8 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -2312,6 +2312,8 @@ void intel_infoframe_init(struct intel_digital_port *intel_dig_port) intel_dig_port->infoframe_enabled = g4x_infoframe_enabled; } else if (HAS_DDI(dev_priv)) { if (intel_dig_port->lspcon.active) { + intel_dig_port->write_infoframe = + lspcon_write_infoframe; intel_dig_port->set_infoframes = lspcon_set_infoframes; intel_dig_port->infoframe_enabled = lspcon_infoframe_enabled; diff --git a/drivers/gpu/drm/i915/intel_lspcon.c b/drivers/gpu/drm/i915/intel_lspcon.c index 1edca590..80b9afa 100644 --- a/drivers/gpu/drm/i915/intel_lspcon.c +++ b/drivers/gpu/drm/i915/intel_lspcon.c @@ -31,6 +31,12 @@ #define LSPCON_VENDOR_PARADE_OUI 0x001CF8 #define LSPCON_VENDOR_MCA_OUI 0x0060AD +/* AUX addresses to write MCA AVI IF */ +#define LSPCON_MCA_AVI_IF_WRITE_OFFSET 0x5C0 +#define LSPCON_MCA_AVI_IF_CTRL 0x5DF +#define LSPCON_MCA_AVI_IF_KICKOFF (1 << 0) +#define LSPCON_MCA_AVI_IF_HANDLED (1 << 1) + static struct intel_dp *lspcon_to_intel_dp(struct intel_lspcon *lspcon) { struct intel_digital_port *dig_port = @@ -234,6 +240,89 @@ static void lspcon_resume_in_pcon_wa(struct intel_lspcon *lspcon) DRM_DEBUG_KMS("LSPCON DP descriptor mismatch after resume\n"); } +static bool _lspcon_write_avi_infoframe_mca(struct drm_dp_aux *aux, + const uint8_t *buffer, ssize_t len) +{ + int ret; + uint32_t val = 0; + uint32_t retry; + uint16_t reg; + const uint8_t *data = buffer; + + reg = LSPCON_MCA_AVI_IF_WRITE_OFFSET; + while (val < len) { + + /* DPCD write for AVI IF can fail on a slow FW day, so retry */ + for (retry = 0; retry < 5; retry++) { + ret = drm_dp_dpcd_write(aux, reg, (void *)data, 1); + if (ret == 1) + break; + else if (retry < 4) { + mdelay(50); + continue; + } else { + DRM_ERROR("DPCD write failed, add:0x%x\n", reg); + return false; + } + } + val++; reg++; data++; + } + + val = 0; + reg = LSPCON_MCA_AVI_IF_CTRL; + ret = drm_dp_dpcd_read(aux, reg, &val, 1); + if (ret < 0) { + DRM_ERROR("DPCD read failed, address 0x%x\n", reg); + return false; + } + + /* Indicate LSPCON chip about infoframe, clear bit 1 and set bit 0 */ + val &= ~LSPCON_MCA_AVI_IF_HANDLED; + val |= LSPCON_MCA_AVI_IF_KICKOFF; + + ret = drm_dp_dpcd_write(aux, reg, &val, 1); + if (ret < 0) { + DRM_ERROR("DPCD read failed, address 0x%x\n", reg); + return false; + } + + val = 0; + ret = drm_dp_dpcd_read(aux, reg, &val, 1); + if (ret < 0) { + DRM_ERROR("DPCD read failed, address 0x%x\n", reg); + return false; + } + + if (val == LSPCON_MCA_AVI_IF_HANDLED) + DRM_DEBUG_KMS("AVI IF handled by FW\n"); + + return true; +} + +void lspcon_write_infoframe(struct drm_encoder *encoder, + const struct intel_crtc_state *crtc_state, + unsigned int type, + const void *frame, ssize_t len) +{ + bool ret = true; + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + struct intel_lspcon *lspcon = enc_to_intel_lspcon(encoder); + + /* LSPCON only needs AVI IF */ + if (type != HDMI_INFOFRAME_TYPE_AVI) + return; + + if (lspcon->vendor == LSPCON_VENDOR_MCA) + ret = _lspcon_write_avi_infoframe_mca(&intel_dp->aux, + frame, len); + if (!ret) { + DRM_ERROR("Failed to write AVI infoframes\n"); + return; + } + + DRM_DEBUG_DRIVER("AVI infoframes updated successfully\n"); +} + void lspcon_set_infoframes(struct drm_encoder *encoder, bool enable, const struct intel_crtc_state *crtc_state,