From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932861AbcASKDJ (ORCPT ); Tue, 19 Jan 2016 05:03:09 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:59474 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932623AbcASKDA (ORCPT ); Tue, 19 Jan 2016 05:03:00 -0500 From: Sricharan R To: wsa@the-dreams.de Cc: devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, agross@codeaurora.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, iivanov@mm-sol.com, galak@codeaurora.org, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, andy.gross@linaro.org, ntelkar@codeaurora.org, sricharan@codeaurora.org, architt@codeaurora.org Subject: [PATCH V7 0/6] i2c: qup: Add support for v2 tags and bam dma Date: Tue, 19 Jan 2016 15:32:40 +0530 Message-Id: <1453197766-18976-1-git-send-email-sricharan@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org i2c: qup: Add support for v2 tags and bam dma QUP from version 2.1.1 onwards, supports a new format of i2c command tags. Tag codes instructs the controller to perform a operation like read/write. This new tagging version is required for adding bam dma capabilities. V2 tags supports transfer of more than 256 bytes in a single i2c transaction. Also adding bam dma support facilitates transferring each i2c_msg in i2c_msgs without a 'stop' bit in between which is required for some of the clients. Tested this series on apq8074 dragon board eeprom client on i2c bus1 [V7] Added tested-by tags and fixed a small comment [V6] Added review tags and fixed a checkpatch warning in patch 4/6. [V5] Addressed few more comments from Ivan T. Ivanov. Squashed patch 2 and 3 as no point in having only few lines of common code between v1 and v2 tags for increased complexity. Couple of non functional review comments fixes in patch 3, 4. Added a change in patch 4 to have proper transfer completion in a corner case. patch 5, 6 unchanged. [V4] Added a patch to factor out some common code. Removed support for freq > 400KHZ as per comments. Addressed comments from Ivan T. Ivanov to keep the code for V2 support in a separate path. Changed the authorship of V2 tags support patch. [V3] Added support to coalesce each i2c_msg in i2c_msgs for fifo and block mode in Patch 2. Also addressed further code comments. http://comments.gmane.org/gmane.linux.drivers.i2c/22497 [V2] Addressed comments from Ivan T. Ivanov, Andy Gross [v1] Initial Version Sricharan R (6): i2c: qup: Change qup_wait_writeready function to use for all timeouts i2c: qup: Add V2 tags support i2c: qup: Transfer each i2c_msg in i2c_msgs without a stop bit i2c: qup: Add bam dma capabilities dts: msm8974: Add blsp2_bam dma node dts: msm8974: Add dma channels for blsp2_i2c1 node arch/arm/boot/dts/qcom-msm8974.dtsi | 14 +- drivers/i2c/busses/i2c-qup.c | 922 ++++++++++++++++++++++++++++++++++-- 2 files changed, 887 insertions(+), 49 deletions(-) -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation