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Davis" , , , , , , , , MD Danish Anwar Subject: [PATCH v8 6/6] remoteproc: pru: Configure firmware based on client setup Date: Wed, 16 Nov 2022 17:46:34 +0530 Message-ID: <20221116121634.2901265-7-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221116121634.2901265-1-danishanwar@ti.com> References: <20221116121634.2901265-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221116_041656_057873_C48E513C X-CRM114-Status: GOOD ( 15.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Tero Kristo 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. Co-developed-by: Suman Anna Co-developed-by: Tero Kristo Co-developed-by: Grzegorz Jaszczyk Co-developed-by: Puranjay Mohan Signed-off-by: MD Danish Anwar --- drivers/remoteproc/pru_rproc.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index a7307a4c9308..bbee17522aac 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -172,6 +172,23 @@ void pru_control_set_reg(struct pru_rproc *pru, unsigned int reg, 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) { struct rproc *rproc; @@ -228,6 +245,7 @@ struct rproc *pru_rproc_get(struct device_node *np, int index, struct rproc *rproc; struct pru_rproc *pru; struct device *dev; + const char *fw_name; int ret; rproc = __pru_rproc_get(np, index); @@ -254,11 +272,25 @@ struct rproc *pru_rproc_get(struct device_node *np, int index, if (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; err_no_rproc_handle: rproc_put(rproc); return ERR_PTR(ret); + +err: + pru_rproc_put(rproc); + return ERR_PTR(ret); } EXPORT_SYMBOL_GPL(pru_rproc_get); @@ -278,6 +310,8 @@ void pru_rproc_put(struct rproc *rproc) pru = rproc->priv; + pru_rproc_set_firmware(rproc, NULL); + mutex_lock(&pru->lock); if (!pru->client_np) {