An integer flag in the private data structure for the udev was added to indicate run-state. A function was also added to return that flag in order for the driver to support the is_running driver function.
This patch depends on patch 0007 of this patch series.
Signed-off-by: Greg Leonberg greg.leonberg@sunhillo.com --- drivers/remoteproc/pru_rproc.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index d9b6cc2..94cdbf7 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -107,6 +107,7 @@ struct pru { int id; struct pruss *prusspriv; const struct pru_private_data *data; + int isRunning; };
static inline u32 pru_control_read_reg(struct pru *pru, unsigned int reg) @@ -162,6 +163,23 @@ static int pru_rproc_set_ctable(struct pru *pru, enum pru_ctable_idx c, u32 addr }
/** + * pru_is_running() - check if the pru is running + * @dev: corresponding remote processor device + * + * Return: 0 if the pru is running, else 1. + */ +static int pru_is_running(struct udevice *dev) +{ + struct pru *priv; + + priv = dev_get_priv(dev); + if (!priv) + return 0; + + return priv->isRunning; +} + +/** * pru_start() - start the pru processor * @dev: corresponding k3 remote processor device * @@ -179,6 +197,8 @@ static int pru_start(struct udevice *dev) val = CTRL_CTRL_EN | ((priv->bootaddr >> 2) << 16); writel(val, priv->mem_regions[PRU_MEM_CTRL].pa + PRU_CTRL_CTRL);
+ priv->isRunning = 0; + return 0; }
@@ -199,6 +219,8 @@ static int pru_stop(struct udevice *dev) val &= ~CTRL_CTRL_EN; writel(val, priv->mem_regions[PRU_MEM_CTRL].pa + PRU_CTRL_CTRL);
+ priv->isRunning = 1; + return 0; }
@@ -431,6 +453,7 @@ static const struct dm_rproc_ops pru_ops = { .start = pru_start, .stop = pru_stop, .load = pru_load, + .is_running = pru_is_running, };
static void pru_set_id(struct pru *priv, struct udevice *dev) @@ -482,6 +505,8 @@ static int pru_probe(struct udevice *dev) } priv->data = data;
+ priv->isRunning = 1; + pru_set_id(priv, dev);
return 0;