From patchwork Wed Sep 8 00:39:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Airlie X-Patchwork-Id: 12479651 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D5A9FC433FE for ; Wed, 8 Sep 2021 00:40:27 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A7E85610F8 for ; Wed, 8 Sep 2021 00:40:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org A7E85610F8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 184E16E0FF; Wed, 8 Sep 2021 00:40:27 +0000 (UTC) Received: from us-smtp-delivery-44.mimecast.com (us-smtp-delivery-44.mimecast.com [207.211.30.44]) by gabe.freedesktop.org (Postfix) with ESMTPS id B166B6E0FE for ; Wed, 8 Sep 2021 00:40:25 +0000 (UTC) Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-433-nQ8ll4EtNLmKJJXnQzMjlw-1; Tue, 07 Sep 2021 20:40:20 -0400 X-MC-Unique: nQ8ll4EtNLmKJJXnQzMjlw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DC4FC107ACC7; Wed, 8 Sep 2021 00:40:19 +0000 (UTC) Received: from dreadlord-bne-redhat-com.bne.redhat.com (unknown [10.64.0.157]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9710E60CD1; Wed, 8 Sep 2021 00:40:18 +0000 (UTC) From: Dave Airlie To: intel-gfx@lists.freedesktop.org Cc: jani.nikula@linux.intel.com, Dave Airlie Date: Wed, 8 Sep 2021 10:39:35 +1000 Message-Id: <20210908003944.2972024-13-airlied@gmail.com> In-Reply-To: <20210908003944.2972024-1-airlied@gmail.com> References: <20210908003944.2972024-1-airlied@gmail.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: gmail.com Subject: [Intel-gfx] [PATCH 12/21] drm/i915: constify fdi link training vtable X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 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" From: Dave Airlie Avoid having writeable function pointers. Reviewed-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_display.c | 2 +- drivers/gpu/drm/i915/display/intel_fdi.c | 18 +++++++++++++++--- drivers/gpu/drm/i915/i915_drv.h | 2 +- 3 files changed, 17 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 87950202f4ce..0ad577aceb9d 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -2100,7 +2100,7 @@ static void ilk_pch_enable(const struct intel_atomic_state *state, assert_pch_transcoder_disabled(dev_priv, pipe); /* For PCH output, training FDI link */ - dev_priv->fdi_funcs.fdi_link_train(crtc, crtc_state); + dev_priv->fdi_funcs->fdi_link_train(crtc, crtc_state); /* We need to program the right clock selection before writing the pixel * mutliplier into the DPLL. */ diff --git a/drivers/gpu/drm/i915/display/intel_fdi.c b/drivers/gpu/drm/i915/display/intel_fdi.c index d9f952e0c67f..68aa9c7b18ec 100644 --- a/drivers/gpu/drm/i915/display/intel_fdi.c +++ b/drivers/gpu/drm/i915/display/intel_fdi.c @@ -1005,15 +1005,27 @@ void lpt_fdi_program_mphy(struct drm_i915_private *dev_priv) intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY); } +static const struct drm_i915_fdi_link_train_funcs ilk_funcs = { + .fdi_link_train = ilk_fdi_link_train +}; + +static const struct drm_i915_fdi_link_train_funcs gen6_funcs = { + .fdi_link_train = gen6_fdi_link_train +}; + +static const struct drm_i915_fdi_link_train_funcs ivb_funcs = { + .fdi_link_train = ivb_manual_fdi_link_train +}; + void intel_fdi_init_hook(struct drm_i915_private *dev_priv) { if (IS_IRONLAKE(dev_priv)) { - dev_priv->fdi_funcs.fdi_link_train = ilk_fdi_link_train; + dev_priv->fdi_funcs = &ilk_funcs; } else if (IS_SANDYBRIDGE(dev_priv)) { - dev_priv->fdi_funcs.fdi_link_train = gen6_fdi_link_train; + dev_priv->fdi_funcs = &gen6_funcs; } else if (IS_IVYBRIDGE(dev_priv)) { /* FIXME: detect B0+ stepping and use auto training */ - dev_priv->fdi_funcs.fdi_link_train = ivb_manual_fdi_link_train; + dev_priv->fdi_funcs = &ivb_funcs; } } diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 461ab0a0f088..b3765222e717 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1006,7 +1006,7 @@ struct drm_i915_private { struct drm_i915_irq_funcs irq_funcs; /* fdi display functions */ - struct drm_i915_fdi_link_train_funcs fdi_funcs; + const struct drm_i915_fdi_link_train_funcs *fdi_funcs; /* display pll funcs */ struct drm_i915_dpll_funcs dpll_funcs;