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authorIuliana Prodan <iuliana.prodan@nxp.com>2023-02-17 11:41:24 +0200
committerMathieu Poirier <mathieu.poirier@linaro.org>2023-03-13 11:48:22 -0600
commit11bb42a94648af7d4fd570b7f7f26e74d9561ef0 (patch)
tree66151888ee92383de976f3ffcabdcce2c1911600 /drivers/remoteproc
parentfe15c26ee26efa11741a7b632e9f23b01aca4cc6 (diff)
remoteproc: imx_dsp_rproc: Add module parameter to ignore ready flag from remote processor
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>
Diffstat (limited to 'drivers/remoteproc')
-rw-r--r--drivers/remoteproc/imx_dsp_rproc.c32
1 files changed, 30 insertions, 2 deletions
diff --git a/drivers/remoteproc/imx_dsp_rproc.c b/drivers/remoteproc/imx_dsp_rproc.c
index 95da1cbefacf..0b37d729443e 100644
--- a/drivers/remoteproc/imx_dsp_rproc.c
+++ b/drivers/remoteproc/imx_dsp_rproc.c
@@ -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);