From patchwork Fri Aug 30 08:31:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sharma, Swati2" X-Patchwork-Id: 11123433 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 98D6B14F7 for ; Fri, 30 Aug 2019 08:42:26 +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 7EFCE238C7 for ; Fri, 30 Aug 2019 08:42:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7EFCE238C7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9C43D6E2ED; Fri, 30 Aug 2019 08:42:25 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1C9646E2D3 for ; Fri, 30 Aug 2019 08:42:23 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Aug 2019 01:42:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,446,1559545200"; d="scan'208";a="381059301" Received: from genxfsim-shark-bay-client-platform.iind.intel.com ([10.223.34.144]) by fmsmga005.fm.intel.com with ESMTP; 30 Aug 2019 01:42:19 -0700 From: Swati Sharma To: intel-gfx@lists.freedesktop.org Date: Fri, 30 Aug 2019 14:01:47 +0530 Message-Id: <1567153913-20166-6-git-send-email-swati2.sharma@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1567153913-20166-1-git-send-email-swati2.sharma@intel.com> References: <1567153913-20166-1-git-send-email-swati2.sharma@intel.com> Subject: [Intel-gfx] [v9][PATCH 05/11] drm/i915/display: Extract i9xx_read_luts() 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: , Cc: jani.nikula@intel.com, daniel.vetter@ffwll.ch, ankit.k.nautiyal@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" For the legacy(gen < 4) gamma, add hw read out to create hw blob of gamma lut values. Also, add function intel_color_lut_pack to convert hw value with given bit precision to lut property val. v4: -No need to initialize *blob [Jani] -Removed right shifts [Jani] -Dropped dev local var [Jani] v5: -Returned blob instead of assigning it internally within the function [Ville] -Renamed function i9xx_get_color_config() to i9xx_read_luts() -Renamed i9xx_get_config_internal() to i9xx_read_lut_8() [Ville] v9: -Change in commit message [Jani, Uma] -Wrap commit within 75 characters [Uma] -Use macro for 256 [Uma] -Made read func para as const [Ville, Uma] Signed-off-by: Swati Sharma Reviewed-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_color.c | 54 ++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/i915_reg.h | 3 ++ 2 files changed, 57 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c index 141efb0..107a03a 100644 --- a/drivers/gpu/drm/i915/display/intel_color.c +++ b/drivers/gpu/drm/i915/display/intel_color.c @@ -1574,6 +1574,59 @@ bool intel_color_lut_equal(struct drm_property_blob *blob1, return true; } +/* convert hw value with given bit_precision to lut property val */ +static u32 intel_color_lut_pack(u32 val, u32 bit_precision) +{ + u32 max = 0xffff >> (16 - bit_precision); + + val = clamp_val(val, 0, max); + + if (bit_precision < 16) + val <<= 16 - bit_precision; + + return val; +} + +static struct drm_property_blob * +i9xx_read_lut_8(const struct intel_crtc_state *crtc_state) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + enum pipe pipe = crtc->pipe; + struct drm_property_blob *blob; + struct drm_color_lut *blob_data; + u32 i, val; + + blob = drm_property_create_blob(&dev_priv->drm, + sizeof(struct drm_color_lut) * LEGACY_LUT_LENGTH, + NULL); + if (IS_ERR(blob)) + return NULL; + + blob_data = blob->data; + + for (i = 0; i < LEGACY_LUT_LENGTH; i++) { + if (HAS_GMCH(dev_priv)) + val = I915_READ(PALETTE(pipe, i)); + else + val = I915_READ(LGC_PALETTE(pipe, i)); + + blob_data[i].red = intel_color_lut_pack(REG_FIELD_GET( + LGC_PALETTE_RED_MASK, val), 8); + blob_data[i].green = intel_color_lut_pack(REG_FIELD_GET( + LGC_PALETTE_GREEN_MASK, val), 8); + blob_data[i].blue = intel_color_lut_pack(REG_FIELD_GET( + LGC_PALETTE_BLUE_MASK, val), 8); + } + + return blob; +} + +void i9xx_read_luts(struct intel_crtc_state *crtc_state) +{ + crtc_state->base.gamma_lut = i9xx_read_lut_8(crtc_state); +} + void intel_color_init(struct intel_crtc *crtc) { struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); @@ -1594,6 +1647,7 @@ void intel_color_init(struct intel_crtc *crtc) dev_priv->display.color_check = i9xx_color_check; dev_priv->display.color_commit = i9xx_color_commit; dev_priv->display.load_luts = i9xx_load_luts; + dev_priv->display.read_luts = i9xx_read_luts; } } else { if (INTEL_GEN(dev_priv) >= 11) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 02e1ef1..09ea5b1 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7192,6 +7192,9 @@ enum { /* legacy palette */ #define _LGC_PALETTE_A 0x4a000 #define _LGC_PALETTE_B 0x4a800 +#define LGC_PALETTE_RED_MASK REG_GENMASK(23, 16) +#define LGC_PALETTE_GREEN_MASK REG_GENMASK(15, 8) +#define LGC_PALETTE_BLUE_MASK REG_GENMASK(7, 0) #define LGC_PALETTE(pipe, i) _MMIO(_PIPE(pipe, _LGC_PALETTE_A, _LGC_PALETTE_B) + (i) * 4) /* ilk/snb precision palette */