From patchwork Thu Sep 29 13:20:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jocelyn Falempe X-Patchwork-Id: 12994079 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 11EE5C433FE for ; Thu, 29 Sep 2022 13:21:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 056CF10E617; Thu, 29 Sep 2022 13:21:03 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id 22D7E10E617 for ; Thu, 29 Sep 2022 13:20:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1664457657; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=otvnsjRb15c+8bOAt9sMKWB637Ilzb72GguWUby0ozI=; b=bVnjK+S8sj0Pu5zio+MR4KfJKlGEb4ADxoHjuWIq+5doMcqEExKP3/bY6/LEc9e1YK0clm pLULhpM986hI4rE/w85aKQ+8Kye0z78RmRzAXXIs0xj5fcGpuhv/UrdP4aY4e49HtZLZ9U Rxf1Nn3dD9EoEUjuYIONZcIenRBK9Xw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-644-fVGXsgXIPdeOGocXA7iCDw-1; Thu, 29 Sep 2022 09:20:55 -0400 X-MC-Unique: fVGXsgXIPdeOGocXA7iCDw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id CED80185A794; Thu, 29 Sep 2022 13:20:54 +0000 (UTC) Received: from hydra.redhat.com (unknown [10.39.194.221]) by smtp.corp.redhat.com (Postfix) with ESMTP id 135391121314; Thu, 29 Sep 2022 13:20:53 +0000 (UTC) From: Jocelyn Falempe To: dri-devel@lists.freedesktop.org, tzimmermann@suse.de, airlied@redhat.com Subject: [PATCH v2] drm/ast: Add Atomic gamma lut support for aspeed Date: Thu, 29 Sep 2022 15:20:50 +0200 Message-Id: <20220929132050.591283-1-jfalempe@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jocelyn Falempe Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The current ast driver only supports legacy gamma interface. This also fixes a Gnome3/Wayland error which incorrectly adds gamma to atomic commit: "Page flip discarded: CRTC property (GAMMA_LUT) not found" I only tested remotely, so I wasn't able to check that it had an effect on the VGA output. But when activating "Night Light" in Gnome, ast_crtc_load_lut() is called. v2: use the same functions as mgag200. handle 16bits color mode. Signed-off-by: Jocelyn Falempe Tested-by: Thomas Zimmermann Reviewed-by: Thomas Zimmermann --- drivers/gpu/drm/ast/ast_mode.c | 94 ++++++++++++++++++++++++++++------ 1 file changed, 77 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index 214b10178454..06ea13c3a9b4 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -49,6 +49,8 @@ #include "ast_drv.h" #include "ast_tables.h" +#define AST_LUT_SIZE 256 + static inline void ast_load_palette_index(struct ast_private *ast, u8 index, u8 red, u8 green, u8 blue) @@ -63,20 +65,71 @@ static inline void ast_load_palette_index(struct ast_private *ast, ast_io_read8(ast, AST_IO_SEQ_PORT); } -static void ast_crtc_load_lut(struct ast_private *ast, struct drm_crtc *crtc) +static void ast_crtc_set_gamma_linear(struct ast_private *ast, + const struct drm_format_info *format) { - u16 *r, *g, *b; int i; - if (!crtc->enabled) - return; + switch (format->format) { + case DRM_FORMAT_RGB565: + /* Use better interpolation, to take 32 values from 0 to 255 */ + for (i = 0; i < AST_LUT_SIZE / 8; i++) + ast_load_palette_index(ast, + i, + i * 8 + i / 4, + i * 4 + i / 16, + i * 8 + i / 4); + /* Green has one more bit, so add padding with 0 for red and blue. */ + for (i = AST_LUT_SIZE / 8; i < AST_LUT_SIZE / 4; i++) + ast_load_palette_index(ast, i, 0, i * 4 + i / 16, 0); + break; + case DRM_FORMAT_C8: /* In this case, gamma table is used as color palette */ + case DRM_FORMAT_RGB888: + case DRM_FORMAT_XRGB8888: + for (i = 0; i < AST_LUT_SIZE; i++) + ast_load_palette_index(ast, i, i, i, i); + break; + default: + drm_warn_once(&ast->base, "Unsupported format %p4cc for gamma correction\n", + &format->format); + break; + } +} - r = crtc->gamma_store; - g = r + crtc->gamma_size; - b = g + crtc->gamma_size; +static void ast_crtc_set_gamma(struct ast_private *ast, + const struct drm_format_info *format, + struct drm_color_lut *lut) +{ + int i; - for (i = 0; i < 256; i++) - ast_load_palette_index(ast, i, *r++ >> 8, *g++ >> 8, *b++ >> 8); + switch (format->format) { + case DRM_FORMAT_RGB565: + /* Use better interpolation, to take 32 values from lut[0] to lut[255] */ + for (i = 0; i < AST_LUT_SIZE / 8; i++) + ast_load_palette_index(ast, + i, + lut[i * 8 + i / 4].red >> 8, + lut[i * 4 + i / 16].green >> 8, + lut[i * 8 + i / 4].blue >> 8); + /* Green has one more bit, so add padding with 0 for red and blue. */ + for (i = AST_LUT_SIZE / 8; i < AST_LUT_SIZE / 4; i++) + ast_load_palette_index(ast, i, 0, lut[i * 4 + i / 16].green >> 8, 0); + break; + case DRM_FORMAT_C8: /* In this case, gamma table is used as color palette */ + case DRM_FORMAT_RGB888: + case DRM_FORMAT_XRGB8888: + for (i = 0; i < AST_LUT_SIZE; i++) + ast_load_palette_index(ast, + i, + lut[i].red >> 8, + lut[i].green >> 8, + lut[i].blue >> 8); + break; + default: + drm_warn_once(&ast->base, "Unsupported format %p4cc for gamma correction\n", + &format->format); + break; + } } static bool ast_get_vbios_mode_info(const struct drm_format_info *format, @@ -1018,9 +1071,11 @@ static void ast_crtc_dpms(struct drm_crtc *crtc, int mode) ast_set_color_reg(ast, format); ast_set_vbios_color_reg(ast, format, vbios_mode_info); + if (crtc->state->gamma_lut) + ast_crtc_set_gamma(ast, format, crtc->state->gamma_lut->data); + else + ast_crtc_set_gamma_linear(ast, format); } - - ast_crtc_load_lut(ast, crtc); break; case DRM_MODE_DPMS_STANDBY: case DRM_MODE_DPMS_SUSPEND: @@ -1158,20 +1213,23 @@ ast_crtc_helper_atomic_flush(struct drm_crtc *crtc, { struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc); - struct drm_crtc_state *old_crtc_state = drm_atomic_get_old_crtc_state(state, - crtc); struct drm_device *dev = crtc->dev; struct ast_private *ast = to_ast_private(dev); struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state); - struct ast_crtc_state *old_ast_crtc_state = to_ast_crtc_state(old_crtc_state); struct ast_vbios_mode_info *vbios_mode_info = &ast_crtc_state->vbios_mode_info; /* * The gamma LUT has to be reloaded after changing the primary * plane's color format. */ - if (old_ast_crtc_state->format != ast_crtc_state->format) - ast_crtc_load_lut(ast, crtc); + if (crtc_state->enable && crtc_state->color_mgmt_changed) { + if (crtc_state->gamma_lut) + ast_crtc_set_gamma(ast, + ast_crtc_state->format, + crtc_state->gamma_lut->data); + else + ast_crtc_set_gamma_linear(ast, ast_crtc_state->format); + } //Set Aspeed Display-Port if (ast->tx_chip_types & AST_TX_ASTDP_BIT) @@ -1309,7 +1367,9 @@ static int ast_crtc_init(struct drm_device *dev) if (ret) return ret; - drm_mode_crtc_set_gamma_size(crtc, 256); + drm_mode_crtc_set_gamma_size(crtc, AST_LUT_SIZE); + drm_crtc_enable_color_mgmt(crtc, 0, false, AST_LUT_SIZE); + drm_crtc_helper_add(crtc, &ast_crtc_helper_funcs); return 0;