From nobody Mon Feb 9 17:35:28 2026 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7E40B22D781; Thu, 9 Oct 2025 15:55:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760025331; cv=none; b=FW4EE/gQ06dIXSbcvFTqfo72JZSJaiwR7Vkh38nwunM578G/HmH6he1FzbIz6Y2EPEsB6o1AH03wBXqoqhE+oJT9qKJXvCzfgDoKpU44S2AfFQ8XoQsw0lGT3KAeQTsdbuQZiSE/NV55SwXdMMN/o8HN1lXT0HvImVpZdFc9Rpc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760025331; c=relaxed/simple; bh=Ldr0J4d8oLQ9xg/bEwW76/C7Vo+NvP/FYftwus6rV+g=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=M/oAXDDGeWZdTwGMQZftliiPZCWjpKiagKgAAh+86dq2igtdri6ZQ4OUxXaWN5b3Kusxs5IDFMGyY3+NWfUpdaN2cy0O2OVtegDzbEpna9IaHiGW887jY4vLtq7KeluL07ILdTWQlASaJxKVcLOZsXTIflBPznkKRRFKtVD6Z7c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=PXIdQCQ7; arc=none smtp.client-ip=68.232.153.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="PXIdQCQ7" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1760025330; x=1791561330; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Ldr0J4d8oLQ9xg/bEwW76/C7Vo+NvP/FYftwus6rV+g=; b=PXIdQCQ7bujYEgFqRDerd5HnnJbHAXnUbN/ofMxqEdAHL1sOXc7I6U7j I7ZpNNUd2nJTd4L9wmWqq7fRFf+5tWNimraeddatpQikKQwmenx0DGAVn eLhPawieYVqS6ODs23GeLJXJHv5pbdY00jchbXcdlbxHNUGTZitW4LjXO Z5ATc0WNPE7zqgLrW5sxX8Oj03YChtoqZa/NGbqNF719ZMR92afiNmf0v qvEoUOFXWSRdpGL4Q76bXuU7JNJx3zJYz2uvMhqUKIy5cTI/EWyARFLfm 3Etq2Jc9O0V83ciU7cYiYOpCGzpqPjxWL1a+tvPnHH68UKC4u7e0X4UKf w==; X-CSE-ConnectionGUID: oiXu0ae6SEGA7hK0w89rgw== X-CSE-MsgGUID: QSddFo6vQrKs2L3VXBkHtQ== X-IronPort-AV: E=Sophos;i="6.19,216,1754982000"; d="scan'208";a="278928772" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 09 Oct 2025 08:55:29 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.58; Thu, 9 Oct 2025 08:55:05 -0700 Received: from che-lt-i64410lx.microchip.com (10.10.85.11) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Thu, 9 Oct 2025 08:54:57 -0700 From: Balamanikandan Gunasundar To: Mauro Carvalho Chehab CC: Eugen Hristev , Chas Williams <3chas3@gmail.com>, Nicolas Ferre , "Alexandre Belloni" , Claudiu Beznea , Balakrishnan Sambath , Hans Verkuil , "Ricardo Ribalda" , Laurent Pinchart , Jacopo Mondi , Daniel Scally , Tomi Valkeinen , , , , , , Balamanikandan Gunasundar Subject: [PATCH 13/18] media: microchip-isc: Store histogram data of all channels Date: Thu, 9 Oct 2025 21:22:46 +0530 Message-ID: <20251009155251.102472-14-balamanikandan.gunasundar@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251009155251.102472-1-balamanikandan.gunasundar@microchip.com> References: <20251009155251.102472-1-balamanikandan.gunasundar@microchip.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Store the histogram data for all 4 channels(R, B, GR, GB). The data of each channel is available on one interrupt. We need 4 interrupt cycles to get all four channels. Store all the channels in a 2D array. This data is later passed to the application buffer when it requests for a dequeue. Signed-off-by: Balamanikandan Gunasundar --- drivers/media/platform/microchip/microchip-isc-base.c | 2 +- drivers/media/platform/microchip/microchip-isc-stats.c | 2 +- drivers/media/platform/microchip/microchip-isc.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/microchip/microchip-isc-base.c b/driver= s/media/platform/microchip/microchip-isc-base.c index e9bd191f042b..6651be6fcb57 100644 --- a/drivers/media/platform/microchip/microchip-isc-base.c +++ b/drivers/media/platform/microchip/microchip-isc-base.c @@ -1225,7 +1225,7 @@ static void isc_hist_count(struct isc_device *isc, u3= 2 *min, u32 *max) struct regmap *regmap =3D isc->regmap; struct isc_ctrls *ctrls =3D &isc->ctrls; u32 *hist_count =3D &ctrls->hist_count[ctrls->hist_id]; - u32 *hist_entry =3D &ctrls->hist_entry[0]; + u32 *hist_entry =3D &ctrls->hist_entry[ctrls->hist_id][0]; u32 i; =20 *min =3D 0; diff --git a/drivers/media/platform/microchip/microchip-isc-stats.c b/drive= rs/media/platform/microchip/microchip-isc-stats.c index d7813c9d95ac..1f3d1ea75005 100644 --- a/drivers/media/platform/microchip/microchip-isc-stats.c +++ b/drivers/media/platform/microchip/microchip-isc-stats.c @@ -298,7 +298,7 @@ static void isc_stats_fill_data(struct isc_stats *stats, =20 /* Copy existing histogram data from AWB work function */ for (c =3D 0; c < HIST_BAYER; c++) { - memcpy(pbuf->hist[c].hist_bins, isc->full_hist_data[c], + memcpy(pbuf->hist[c].hist_bins, &isc->ctrls.hist_entry[0][c], sizeof(pbuf->hist[c].hist_bins)); =20 pbuf->hist[c].hist_min =3D ctrls->hist_minmax[c][HIST_MIN_INDEX]; diff --git a/drivers/media/platform/microchip/microchip-isc.h b/drivers/med= ia/platform/microchip/microchip-isc.h index 35dfd2501ea2..fcb20669ef69 100644 --- a/drivers/media/platform/microchip/microchip-isc.h +++ b/drivers/media/platform/microchip/microchip-isc.h @@ -151,7 +151,7 @@ struct isc_ctrls { u32 gain[HIST_BAYER]; s32 offset[HIST_BAYER]; =20 - u32 hist_entry[HIST_ENTRIES]; + u32 hist_entry[HIST_BAYER][HIST_ENTRIES]; u32 hist_count[HIST_BAYER]; u8 hist_id; u8 hist_stat; --=20 2.34.1