From patchwork Fri Aug 14 09:55:39 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: 11714109 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 679BE138C for ; Fri, 14 Aug 2020 09:57:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 59E62207DA for ; Fri, 14 Aug 2020 09:57:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726889AbgHNJ4y (ORCPT ); Fri, 14 Aug 2020 05:56:54 -0400 Received: from alexa-out.qualcomm.com ([129.46.98.28]:5634 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726603AbgHNJ4y (ORCPT ); Fri, 14 Aug 2020 05:56:54 -0400 Received: from ironmsg-lv-alpha.qualcomm.com ([10.47.202.13]) by alexa-out.qualcomm.com with ESMTP; 14 Aug 2020 02:56:53 -0700 Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by ironmsg-lv-alpha.qualcomm.com with ESMTP/TLS/AES256-SHA; 14 Aug 2020 02:56:50 -0700 Received: from c-rojay-linux.qualcomm.com ([10.206.21.80]) by ironmsg02-blr.qualcomm.com with ESMTP; 14 Aug 2020 15:26:30 +0530 Received: by c-rojay-linux.qualcomm.com (Postfix, from userid 88981) id 925F11AC8; Fri, 14 Aug 2020 15:26:29 +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 1/2] i2c: i2c-qcom-geni: Add tx_dma, rx_dma and xfer_len to geni_i2c_dev struct Date: Fri, 14 Aug 2020 15:25:39 +0530 Message-Id: <20200814095540.32115-2-rojay@codeaurora.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200814095540.32115-1-rojay@codeaurora.org> References: <20200814095540.32115-1-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 Adding tx_dma, rx_dma and xfer length in geni_i2c_dev struct to store DMA mapping data to enhance its scope. For example during shutdown callback to unmap DMA mapping, these new struct members can be used as part of geni_se_tx_dma_unprep and geni_se_rx_dma_unprep calls. Signed-off-by: Roja Rani Yarubandi --- drivers/i2c/busses/i2c-qcom-geni.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c index 7f130829bf01..53ca41f76080 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; + u32 xfer_len; }; struct geni_i2c_err_log { @@ -352,12 +355,11 @@ static void geni_i2c_tx_fsm_rst(struct geni_i2c_dev *gi2c) static int geni_i2c_rx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, u32 m_param) { - dma_addr_t rx_dma; unsigned long time_left; void *dma_buf = NULL; 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); @@ -366,9 +368,10 @@ static int geni_i2c_rx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, else geni_se_select_mode(se, GENI_SE_FIFO); - writel_relaxed(len, se->base + SE_I2C_RX_TRANS_LEN); + writel_relaxed(gi2c->xfer_len, se->base + SE_I2C_RX_TRANS_LEN); - if (dma_buf && geni_se_rx_dma_prep(se, dma_buf, len, &rx_dma)) { + if (dma_buf && geni_se_rx_dma_prep(se, dma_buf, gi2c->xfer_len, + &gi2c->rx_dma)) { geni_se_select_mode(se, GENI_SE_FIFO); i2c_put_dma_safe_msg_buf(dma_buf, msg, false); dma_buf = NULL; @@ -384,7 +387,7 @@ 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); - geni_se_rx_dma_unprep(se, rx_dma, len); + geni_se_rx_dma_unprep(se, gi2c->rx_dma, gi2c->xfer_len); i2c_put_dma_safe_msg_buf(dma_buf, msg, !gi2c->err); } @@ -394,12 +397,11 @@ static int geni_i2c_rx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, static int geni_i2c_tx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, u32 m_param) { - dma_addr_t tx_dma; unsigned long time_left; void *dma_buf = NULL; 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); @@ -408,9 +410,10 @@ static int geni_i2c_tx_one_msg(struct geni_i2c_dev *gi2c, struct i2c_msg *msg, else geni_se_select_mode(se, GENI_SE_FIFO); - writel_relaxed(len, se->base + SE_I2C_TX_TRANS_LEN); + writel_relaxed(gi2c->xfer_len, se->base + SE_I2C_TX_TRANS_LEN); - if (dma_buf && geni_se_tx_dma_prep(se, dma_buf, len, &tx_dma)) { + if (dma_buf && geni_se_tx_dma_prep(se, dma_buf, gi2c->xfer_len, + &gi2c->tx_dma)) { geni_se_select_mode(se, GENI_SE_FIFO); i2c_put_dma_safe_msg_buf(dma_buf, msg, false); dma_buf = NULL; @@ -429,7 +432,7 @@ 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); - geni_se_tx_dma_unprep(se, tx_dma, len); + geni_se_tx_dma_unprep(se, gi2c->tx_dma, gi2c->xfer_len); i2c_put_dma_safe_msg_buf(dma_buf, msg, !gi2c->err); }