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remoteproc: imx_dsp_rproc: Add module parameter to ignore ready flag from remote processor

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There are cases when we want to test a simple "hello world"
application on the DSP and we don't have IPC between the cores.
Therefore, do not wait for a confirmation from the remote processor
at start.

Added "no_mailboxes" flag while inserting the module to not initialize
any mailboxes, and so ignore remote processor reply after start.
By default, this is off - do not ignore reply from rproc.

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20230217094124.9440-1-iuliana.prodan@oss.nxp.com
[Fixed checkpatch warning]
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
This commit is contained in:
Iuliana Prodan 2023-02-17 11:41:24 +02:00 committed by Mathieu Poirier
parent fe15c26ee2
commit 11bb42a946
1 changed files with 30 additions and 2 deletions
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32
drivers/remoteproc/imx_dsp_rproc.c
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@ -28,6 +28,14 @@
#define DSP_RPROC_CLK_MAX 5
/*
* Module parameters
*/
static unsigned int no_mailboxes;
module_param_named(no_mailboxes, no_mailboxes, int, 0644);
MODULE_PARM_DESC(no_mailboxes,
"There is no mailbox between cores, so ignore remote proc reply after start, default is 0 (off).");
#define REMOTE_IS_READY BIT(0)
#define REMOTE_READY_WAIT_MAX_RETRIES 500
@ -172,6 +180,9 @@ static const struct imx_rproc_att imx_dsp_rproc_att_imx8ulp[] = {
{ 0x30000000, 0x90000000, 0x10000000, 0},
};
/* Initialize the mailboxes between cores, if exists */
static int (*imx_dsp_rproc_mbox_init)(struct imx_dsp_rproc *priv);
/* Reset function for DSP on i.MX8MP */
static int imx8mp_dsp_reset(struct imx_dsp_rproc *priv)
{
@ -492,12 +503,12 @@ static void imx_dsp_rproc_rxdb_callback(struct mbox_client *cl, void *data)
}
/**
* imx_dsp_rproc_mbox_init() - request mailbox channels
* imx_dsp_rproc_mbox_alloc() - request mailbox channels
* @priv: private data pointer
*
* Request three mailbox channels (tx, rx, rxdb).
*/
static int imx_dsp_rproc_mbox_init(struct imx_dsp_rproc *priv)
static int imx_dsp_rproc_mbox_alloc(struct imx_dsp_rproc *priv)
{
struct device *dev = priv->rproc->dev.parent;
struct mbox_client *cl;
@ -560,6 +571,18 @@ err_out:
return ret;
}
/*
* imx_dsp_rproc_mbox_no_alloc()
*
* Empty function for no mailbox between cores
*
* Always return 0
*/
static int imx_dsp_rproc_mbox_no_alloc(struct imx_dsp_rproc *priv)
{
return 0;
}
static void imx_dsp_rproc_free_mbox(struct imx_dsp_rproc *priv)
{
mbox_free_channel(priv->tx_ch);
@ -903,6 +926,11 @@ static int imx_dsp_rproc_probe(struct platform_device *pdev)
priv->rproc = rproc;
priv->dsp_dcfg = dsp_dcfg;
if (no_mailboxes)
imx_dsp_rproc_mbox_init = imx_dsp_rproc_mbox_no_alloc;
else
imx_dsp_rproc_mbox_init = imx_dsp_rproc_mbox_alloc;
dev_set_drvdata(dev, rproc);
INIT_WORK(&priv->rproc_work, imx_dsp_rproc_vq_work);