All of lore.kernel.org
 help / color / mirror / Atom feed
From: Roja Rani Yarubandi <rojay@codeaurora.org>
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 <rojay@codeaurora.org>
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	[thread overview]
Message-ID: <20200820103522.26242-2-rojay@codeaurora.org> (raw)
In-Reply-To: <20200820103522.26242-1-rojay@codeaurora.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 <rojay@codeaurora.org>
---
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);
 	}
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member 
of Code Aurora Forum, hosted by The Linux Foundation


WARNING: multiple messages have this Message-ID (diff)
From: Roja Rani Yarubandi <rojay@codeaurora.org>
To: wsa@kernel.org
Cc: linaro-mm-sig@lists.linaro.org, saiprakash.ranjan@codeaurora.org,
	rnayak@codeaurora.org, linux-media@vger.kernel.org,
	gregkh@linuxfoundation.org, linux-arm-msm@vger.kernel.org,
	Roja Rani Yarubandi <rojay@codeaurora.org>,
	dianders@chromium.org, dri-devel@lists.freedesktop.org,
	swboyd@chromium.org, akashast@codeaurora.org, mka@chromium.org,
	agross@kernel.org, msavaliy@qti.qualcomm.com,
	bjorn.andersson@linaro.org, skakit@codeaurora.org,
	linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org
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	[thread overview]
Message-ID: <20200820103522.26242-2-rojay@codeaurora.org> (raw)
In-Reply-To: <20200820103522.26242-1-rojay@codeaurora.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 <rojay@codeaurora.org>
---
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);
 	}
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member 
of Code Aurora Forum, hosted by The Linux Foundation

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  reply	other threads:[~2020-08-20 10:36 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-20 10:35 [PATCH V2 0/2] Implement Shutdown callback for i2c Roja Rani Yarubandi
2020-08-20 10:35 ` Roja Rani Yarubandi
2020-08-20 10:35 ` Roja Rani Yarubandi [this message]
2020-08-20 10:35   ` [PATCH V2 1/2] i2c: i2c-qcom-geni: Store DMA mapping data in geni_i2c_dev struct Roja Rani Yarubandi
2020-08-21  0:18   ` Stephen Boyd
2020-08-21  0:18     ` Stephen Boyd
2020-08-28 11:45     ` rojay
2020-08-28 11:45       ` rojay
2020-08-26 11:55   ` Akash Asthana
2020-08-26 11:55     ` Akash Asthana
2020-09-07 12:51     ` rojay
2020-09-07 12:51     ` rojay
2020-08-20 10:35 ` [PATCH V2 2/2] i2c: i2c-qcom-geni: Add shutdown callback for i2c Roja Rani Yarubandi
2020-08-20 10:35   ` Roja Rani Yarubandi
2020-08-21  0:22   ` Stephen Boyd
2020-08-21  0:22     ` Stephen Boyd
2020-08-28 11:46     ` rojay
2020-08-28 11:46       ` rojay
2020-08-26 11:56   ` Akash Asthana
2020-08-26 11:56     ` Akash Asthana
2020-09-07 12:53     ` rojay
2020-09-07 12:53     ` rojay

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200820103522.26242-2-rojay@codeaurora.org \
    --to=rojay@codeaurora.org \
    --cc=agross@kernel.org \
    --cc=akashast@codeaurora.org \
    --cc=bjorn.andersson@linaro.org \
    --cc=dianders@chromium.org \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=linaro-mm-sig@lists.linaro.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-i2c@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-media@vger.kernel.org \
    --cc=mka@chromium.org \
    --cc=msavaliy@qti.qualcomm.com \
    --cc=rnayak@codeaurora.org \
    --cc=saiprakash.ranjan@codeaurora.org \
    --cc=skakit@codeaurora.org \
    --cc=sumit.semwal@linaro.org \
    --cc=swboyd@chromium.org \
    --cc=wsa@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.