From patchwork Thu Aug 20 10:35:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roja Rani Yarubandi X-Patchwork-Id: 11726015 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 6A46B13B1 for ; Thu, 20 Aug 2020 10:36:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 589502075E for ; Thu, 20 Aug 2020 10:36:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729246AbgHTKgN (ORCPT ); Thu, 20 Aug 2020 06:36:13 -0400 Received: from alexa-out.qualcomm.com ([129.46.98.28]:27234 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731217AbgHTKgI (ORCPT ); Thu, 20 Aug 2020 06:36:08 -0400 Received: from ironmsg07-lv.qualcomm.com (HELO ironmsg07-lv.qulacomm.com) ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 20 Aug 2020 03:36:06 -0700 Received: from ironmsg01-blr.qualcomm.com ([10.86.208.130]) by ironmsg07-lv.qulacomm.com with ESMTP/TLS/AES256-SHA; 20 Aug 2020 03:36:04 -0700 Received: from c-rojay-linux.qualcomm.com ([10.206.21.80]) by ironmsg01-blr.qualcomm.com with ESMTP; 20 Aug 2020 16:05:28 +0530 Received: by c-rojay-linux.qualcomm.com (Postfix, from userid 88981) id 5D9CC1F62; Thu, 20 Aug 2020 16:05:27 +0530 (IST) From: Roja Rani Yarubandi To: wsa@kernel.org Cc: swboyd@chromium.org, dianders@chromium.org, saiprakash.ranjan@codeaurora.org, gregkh@linuxfoundation.org, mka@chromium.org, akashast@codeaurora.org, msavaliy@qti.qualcomm.com, skakit@codeaurora.org, rnayak@codeaurora.org, agross@kernel.org, bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, sumit.semwal@linaro.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Roja Rani Yarubandi Subject: [PATCH V2 1/2] i2c: i2c-qcom-geni: Store DMA mapping data in geni_i2c_dev struct Date: Thu, 20 Aug 2020 16:05:21 +0530 Message-Id: <20200820103522.26242-2-rojay@codeaurora.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200820103522.26242-1-rojay@codeaurora.org> References: <20200820103522.26242-1-rojay@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Store DMA mapping data in geni_i2c_dev struct to enhance DMA mapping data scope. For example during shutdown callback to unmap DMA mapping, this stored DMA mapping data can be used to call geni_se_tx_dma_unprep and geni_se_rx_dma_unprep functions. Signed-off-by: Roja Rani Yarubandi --- Changes in V2: - As per Stephen's comments, changed commit text, fixed minor nitpicks. drivers/i2c/busses/i2c-qcom-geni.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c index 7f130829bf01..1fda5c7c2cfc 100644 --- a/drivers/i2c/busses/i2c-qcom-geni.c +++ b/drivers/i2c/busses/i2c-qcom-geni.c @@ -86,6 +86,9 @@ struct geni_i2c_dev { u32 clk_freq_out; const struct geni_i2c_clk_fld *clk_fld; int suspended; + dma_addr_t tx_dma; + dma_addr_t rx_dma; + size_t xfer_len; }; struct geni_i2c_err_log { @@ -358,6 +361,7 @@ static int geni_i2c_rx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, struct geni_se *se = &gi2c->se; size_t len = msg->len; + gi2c->xfer_len = msg->len; if (!of_machine_is_compatible("lenovo,yoga-c630")) dma_buf = i2c_get_dma_safe_msg_buf(msg, 32); @@ -384,6 +388,7 @@ static int geni_i2c_rx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, if (dma_buf) { if (gi2c->err) geni_i2c_rx_fsm_rst(gi2c); + gi2c->rx_dma = rx_dma; geni_se_rx_dma_unprep(se, rx_dma, len); i2c_put_dma_safe_msg_buf(dma_buf, msg, !gi2c->err); } @@ -400,6 +405,7 @@ static int geni_i2c_tx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, struct geni_se *se = &gi2c->se; size_t len = msg->len; + gi2c->xfer_len = msg->len; if (!of_machine_is_compatible("lenovo,yoga-c630")) dma_buf = i2c_get_dma_safe_msg_buf(msg, 32); @@ -429,6 +435,7 @@ static int geni_i2c_tx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, if (dma_buf) { if (gi2c->err) geni_i2c_tx_fsm_rst(gi2c); + gi2c->tx_dma = tx_dma; geni_se_tx_dma_unprep(se, tx_dma, len); i2c_put_dma_safe_msg_buf(dma_buf, msg, !gi2c->err); }