From: Suman Anna <s-anna@ti.com>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Lokesh Vutla <lokeshvutla@ti.com>,
Praneeth Bajjuri <praneeth@ti.com>,
Hari Nagalla <hnagalla@ti.com>,
<linux-remoteproc@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, Suman Anna <s-anna@ti.com>
Subject: [PATCH v2 4/5] remoteproc: k3-dsp: Refactor mbox request code in start
Date: Fri, 23 Jul 2021 17:02:47 -0500 [thread overview]
Message-ID: <20210723220248.6554-5-s-anna@ti.com> (raw)
In-Reply-To: <20210723220248.6554-1-s-anna@ti.com>
Refactor out the mailbox request and associated ping logic code
from k3_dsp_rproc_start() function into its own separate function
so that it can be re-used in the soon to be added .attach() ops
callback.
Signed-off-by: Suman Anna <s-anna@ti.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
v2: No code changes, picked up Reviewed-by tags
v1: https://patchwork.kernel.org/project/linux-remoteproc/patch/20210522000309.26134-6-s-anna@ti.com/
drivers/remoteproc/ti_k3_dsp_remoteproc.c | 65 ++++++++++++++---------
1 file changed, 39 insertions(+), 26 deletions(-)
diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
index fd4eb67a6681..faf60a274e8d 100644
--- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
@@ -216,6 +216,43 @@ static int k3_dsp_rproc_release(struct k3_dsp_rproc *kproc)
return ret;
}
+static int k3_dsp_rproc_request_mbox(struct rproc *rproc)
+{
+ struct k3_dsp_rproc *kproc = rproc->priv;
+ struct mbox_client *client = &kproc->client;
+ struct device *dev = kproc->dev;
+ int ret;
+
+ client->dev = dev;
+ client->tx_done = NULL;
+ client->rx_callback = k3_dsp_rproc_mbox_callback;
+ client->tx_block = false;
+ client->knows_txdone = false;
+
+ kproc->mbox = mbox_request_channel(client, 0);
+ if (IS_ERR(kproc->mbox)) {
+ ret = -EBUSY;
+ dev_err(dev, "mbox_request_channel failed: %ld\n",
+ PTR_ERR(kproc->mbox));
+ return ret;
+ }
+
+ /*
+ * Ping the remote processor, this is only for sanity-sake for now;
+ * there is no functional effect whatsoever.
+ *
+ * Note that the reply will _not_ arrive immediately: this message
+ * will wait in the mailbox fifo until the remote processor is booted.
+ */
+ ret = mbox_send_message(kproc->mbox, (void *)RP_MBOX_ECHO_REQUEST);
+ if (ret < 0) {
+ dev_err(dev, "mbox_send_message failed: %d\n", ret);
+ mbox_free_channel(kproc->mbox);
+ return ret;
+ }
+
+ return 0;
+}
/*
* The C66x DSP cores have a local reset that affects only the CPU, and a
* generic module reset that powers on the device and allows the DSP internal
@@ -273,37 +310,13 @@ static int k3_dsp_rproc_unprepare(struct rproc *rproc)
static int k3_dsp_rproc_start(struct rproc *rproc)
{
struct k3_dsp_rproc *kproc = rproc->priv;
- struct mbox_client *client = &kproc->client;
struct device *dev = kproc->dev;
u32 boot_addr;
int ret;
- client->dev = dev;
- client->tx_done = NULL;
- client->rx_callback = k3_dsp_rproc_mbox_callback;
- client->tx_block = false;
- client->knows_txdone = false;
-
- kproc->mbox = mbox_request_channel(client, 0);
- if (IS_ERR(kproc->mbox)) {
- ret = -EBUSY;
- dev_err(dev, "mbox_request_channel failed: %ld\n",
- PTR_ERR(kproc->mbox));
+ ret = k3_dsp_rproc_request_mbox(rproc);
+ if (ret)
return ret;
- }
-
- /*
- * Ping the remote processor, this is only for sanity-sake for now;
- * there is no functional effect whatsoever.
- *
- * Note that the reply will _not_ arrive immediately: this message
- * will wait in the mailbox fifo until the remote processor is booted.
- */
- ret = mbox_send_message(kproc->mbox, (void *)RP_MBOX_ECHO_REQUEST);
- if (ret < 0) {
- dev_err(dev, "mbox_send_message failed: %d\n", ret);
- goto put_mbox;
- }
boot_addr = rproc->bootaddr;
if (boot_addr & (kproc->data->boot_align_addr - 1)) {
--
2.32.0
next prev parent reply other threads:[~2021-07-23 22:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-23 22:02 [PATCH v2 0/5] K3 R5F & DSP IPC-only mode support Suman Anna
2021-07-23 22:02 ` [PATCH v2 1/5] remoteproc: Add support for detach-only during shutdown Suman Anna
2021-08-02 18:44 ` Mathieu Poirier
2021-08-02 23:21 ` Suman Anna
2021-08-03 16:23 ` Mathieu Poirier
2021-08-04 19:17 ` Suman Anna
2021-08-05 17:35 ` Mathieu Poirier
2021-08-05 23:27 ` Suman Anna
2021-08-09 17:00 ` Arnaud POULIQUEN
2021-07-23 22:02 ` [PATCH v2 2/5] remoteproc: k3-r5: Refactor mbox request code in start Suman Anna
2021-07-23 22:02 ` [PATCH v2 3/5] remoteproc: k3-r5: Add support for IPC-only mode for all R5Fs Suman Anna
2021-08-02 18:25 ` Mathieu Poirier
2021-07-23 22:02 ` Suman Anna [this message]
2021-07-23 22:02 ` [PATCH v2 5/5] remoteproc: k3-dsp: Add support for IPC-only mode for all K3 DSPs Suman Anna
2021-08-02 18:26 ` Mathieu Poirier
2021-07-26 16:28 ` [PATCH v2 0/5] K3 R5F & DSP IPC-only mode support Mathieu Poirier
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