iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

remoteproc: pru: Configure firmware based on client setup

Browse Source 
Client device node property firmware-name is now used to configure
firmware for the PRU instances. The default firmware is also
restored once releasing the PRU resource.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20230106121046.886863-7-danishanwar@ti.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
This commit is contained in:
Tero Kristo 2023-01-06 17:40:46 +05:30 committed by Mathieu Poirier
parent 1028534003
commit 133f30d3a8
1 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/remoteproc/pru_rproc.c
View File

@ -172,6 +172,23 @@ void pru_control_set_reg(struct pru_rproc *pru, unsigned int reg,
spin_unlock_irqrestore(&pru->rmw_lock, flags); spin_unlock_irqrestore(&pru->rmw_lock, flags);
} }
/**
* pru_rproc_set_firmware() - set firmware for a PRU core
* @rproc: the rproc instance of the PRU
* @fw_name: the new firmware name, or NULL if default is desired
*
* Return: 0 on success, or errno in error case.
*/
static int pru_rproc_set_firmware(struct rproc *rproc, const char *fw_name)
{
struct pru_rproc *pru = rproc->priv;
if (!fw_name)
fw_name = pru->fw_name;
return rproc_set_firmware(rproc, fw_name);
}
static struct rproc *__pru_rproc_get(struct device_node *np, int index) static struct rproc *__pru_rproc_get(struct device_node *np, int index)
{ {
struct rproc *rproc; struct rproc *rproc;
@ -224,6 +241,7 @@ struct rproc *pru_rproc_get(struct device_node *np, int index,
struct rproc *rproc; struct rproc *rproc;
struct pru_rproc *pru; struct pru_rproc *pru;
struct device *dev; struct device *dev;
const char *fw_name;
int ret; int ret;
rproc = __pru_rproc_get(np, index); rproc = __pru_rproc_get(np, index);
@ -249,11 +267,25 @@ struct rproc *pru_rproc_get(struct device_node *np, int index,
if (pru_id) if (pru_id)
*pru_id = pru->id; *pru_id = pru->id;
ret = of_property_read_string_index(np, "firmware-name", index,
&fw_name);
if (!ret) {
ret = pru_rproc_set_firmware(rproc, fw_name);
if (ret) {
dev_err(dev, "failed to set firmware: %d\n", ret);
goto err;
}
}
return rproc; return rproc;
err_no_rproc_handle: err_no_rproc_handle:
rproc_put(rproc); rproc_put(rproc);
return ERR_PTR(ret); return ERR_PTR(ret);
err:
pru_rproc_put(rproc);
return ERR_PTR(ret);
} }
EXPORT_SYMBOL_GPL(pru_rproc_get); EXPORT_SYMBOL_GPL(pru_rproc_get);
@ -273,6 +305,8 @@ void pru_rproc_put(struct rproc *rproc)
pru = rproc->priv; pru = rproc->priv;
pru_rproc_set_firmware(rproc, NULL);
mutex_lock(&pru->lock); mutex_lock(&pru->lock);
if (!pru->client_np) { if (!pru->client_np) {