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Davis" , , , , , , , , MD Danish Anwar Subject: [PATCH v10 3/6] remoteproc: pru: Add enum for PRU Core Indentifiers. Date: Thu, 1 Dec 2022 16:34:57 +0530 Message-ID: <20221201110500.4017889-4-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221201110500.4017889-1-danishanwar@ti.com> References: <20221201110500.4017889-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1751009680873422189?= X-GMAIL-MSGID: =?utf-8?q?1751009680873422189?= Introducing enum pruss_pru_id for PRU Core Identifiers. PRUSS_PRU0 indicates PRU Core 0. PRUSS_PRU1 indicates PRU Core 1. PRUSS_NUM_PRUS indicates the total number of PRU Cores. Signed-off-by: MD Danish Anwar --- drivers/remoteproc/pru_rproc.c | 16 ++++++++++++---- include/linux/pruss.h | 19 +++++++++++++++++-- 2 files changed, 29 insertions(+), 6 deletions(-) diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index b4498a505108..7d4ed39b3772 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -186,6 +186,7 @@ static struct rproc *__pru_rproc_get(struct device_node *np, int index) * pru_rproc_get() - get the PRU rproc instance from a device node * @np: the user/client device node * @index: index to use for the ti,prus property + * @pru_id: optional pointer to return the PRU remoteproc processor id * * This function looks through a client device node's "ti,prus" property at * index @index and returns the rproc handle for a valid PRU remote processor if @@ -193,13 +194,17 @@ static struct rproc *__pru_rproc_get(struct device_node *np, int index) * time. Caller must call pru_rproc_put() when done with using the rproc, not * required if the function returns a failure. * + * When optional @pru_id pointer is passed the PRU remoteproc processor id is + * returned. + * * Return: rproc handle on success, and an ERR_PTR on failure using one * of the following error values * -ENODEV if device is not found * -EBUSY if PRU is already acquired by anyone * -EPROBE_DEFER is PRU device is not probed yet */ -struct rproc *pru_rproc_get(struct device_node *np, int index) +struct rproc *pru_rproc_get(struct device_node *np, int index, + enum pruss_pru_id *pru_id) { struct rproc *rproc; struct pru_rproc *pru; @@ -226,6 +231,9 @@ struct rproc *pru_rproc_get(struct device_node *np, int index) mutex_unlock(&pru->lock); + if (pru_id) + *pru_id = pru->id; + return rproc; err_no_rproc_handle: @@ -556,7 +564,7 @@ static void *pru_d_da_to_va(struct pru_rproc *pru, u32 da, size_t len) dram0 = pruss->mem_regions[PRUSS_MEM_DRAM0]; dram1 = pruss->mem_regions[PRUSS_MEM_DRAM1]; /* PRU1 has its local RAM addresses reversed */ - if (pru->id == 1) + if (pru->id == PRUSS_PRU1) swap(dram0, dram1); shrd_ram = pruss->mem_regions[PRUSS_MEM_SHRD_RAM2]; @@ -865,14 +873,14 @@ static int pru_rproc_set_id(struct pru_rproc *pru) case RTU0_IRAM_ADDR_MASK: fallthrough; case PRU0_IRAM_ADDR_MASK: - pru->id = 0; + pru->id = PRUSS_PRU0; break; case TX_PRU1_IRAM_ADDR_MASK: fallthrough; case RTU1_IRAM_ADDR_MASK: fallthrough; case PRU1_IRAM_ADDR_MASK: - pru->id = 1; + pru->id = PRUSS_PRU1; break; default: ret = -EINVAL; diff --git a/include/linux/pruss.h b/include/linux/pruss.h index 5c5d14b1249d..efe89c586b4b 100644 --- a/include/linux/pruss.h +++ b/include/linux/pruss.h @@ -14,17 +14,32 @@ #define PRU_RPROC_DRVNAME "pru-rproc" +/** + * enum pruss_pru_id - PRU core identifiers + * @PRUSS_PRU0: PRU Core 0. + * @PRUSS_PRU1: PRU Core 1. + * @PRUSS_NUM_PRUS: Total number of PRU Cores available. + * + */ + +enum pruss_pru_id { + PRUSS_PRU0 = 0, + PRUSS_PRU1, + PRUSS_NUM_PRUS, +}; + struct device_node; #if IS_ENABLED(CONFIG_PRU_REMOTEPROC) -struct rproc *pru_rproc_get(struct device_node *np, int index); +struct rproc *pru_rproc_get(struct device_node *np, int index, + enum pruss_pru_id *pru_id); void pru_rproc_put(struct rproc *rproc); #else static inline struct rproc * -pru_rproc_get(struct device_node *np, int index) +pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id) { return ERR_PTR(-EOPNOTSUPP); }