From: MD Danish Anwar <danishanwar@ti.com>
To: "Andrew F. Davis" <afd@ti.com>, Suman Anna <s-anna@ti.com>,
Roger Quadros <rogerq@kernel.org>,
Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>,
MD Danish Anwar <danishanwar@ti.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Bjorn Andersson <andersson@kernel.org>,
Santosh Shilimkar <ssantosh@kernel.org>,
Nishanth Menon <nm@ti.com>
Cc: <linux-remoteproc@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-omap@vger.kernel.org>,
<srk@ti.com>, <devicetree@vger.kernel.org>,
<netdev@vger.kernel.org>
Subject: [PATCH v5 4/5] soc: ti: pruss: Add helper functions to set GPI mode, MII_RT_event and XFR
Date: Thu, 23 Mar 2023 11:54:50 +0530 [thread overview]
Message-ID: <20230323062451.2925996-5-danishanwar@ti.com> (raw)
In-Reply-To: <20230323062451.2925996-1-danishanwar@ti.com>
From: Suman Anna <s-anna@ti.com>
The PRUSS CFG module is represented as a syscon node and is currently
managed by the PRUSS platform driver. Add easy accessor functions to set
GPI mode, MII_RT event enable/disable and XFR (XIN XOUT) enable/disable
to enable the PRUSS Ethernet usecase. These functions reuse the generic
pruss_cfg_update() API function.
Signed-off-by: Suman Anna <s-anna@ti.com>
Co-developed-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
Signed-off-by: Puranjay Mohan <p-mohan@ti.com>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
---
drivers/remoteproc/pru_rproc.c | 15 -------
drivers/soc/ti/pruss.c | 74 ++++++++++++++++++++++++++++++++
include/linux/remoteproc/pruss.h | 51 ++++++++++++++++++++++
3 files changed, 125 insertions(+), 15 deletions(-)
diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c
index 4ddd5854d56e..a88861737dec 100644
--- a/drivers/remoteproc/pru_rproc.c
+++ b/drivers/remoteproc/pru_rproc.c
@@ -81,21 +81,6 @@ enum pru_iomem {
PRU_IOMEM_MAX,
};
-/**
- * enum pru_type - PRU core type identifier
- *
- * @PRU_TYPE_PRU: Programmable Real-time Unit
- * @PRU_TYPE_RTU: Auxiliary Programmable Real-Time Unit
- * @PRU_TYPE_TX_PRU: Transmit Programmable Real-Time Unit
- * @PRU_TYPE_MAX: just keep this one at the end
- */
-enum pru_type {
- PRU_TYPE_PRU = 0,
- PRU_TYPE_RTU,
- PRU_TYPE_TX_PRU,
- PRU_TYPE_MAX,
-};
-
/**
* struct pru_private_data - device data for a PRU core
* @type: type of the PRU core (PRU, RTU, Tx_PRU)
diff --git a/drivers/soc/ti/pruss.c b/drivers/soc/ti/pruss.c
index 2fa7df667592..ac415442e85b 100644
--- a/drivers/soc/ti/pruss.c
+++ b/drivers/soc/ti/pruss.c
@@ -165,6 +165,80 @@ int pruss_release_mem_region(struct pruss *pruss,
}
EXPORT_SYMBOL_GPL(pruss_release_mem_region);
+/**
+ * pruss_cfg_gpimode() - set the GPI mode of the PRU
+ * @pruss: the pruss instance handle
+ * @pru_id: id of the PRU core within the PRUSS
+ * @mode: GPI mode to set
+ *
+ * Sets the GPI mode for a given PRU by programming the
+ * corresponding PRUSS_CFG_GPCFGx register
+ *
+ * Return: 0 on success, or an error code otherwise
+ */
+int pruss_cfg_gpimode(struct pruss *pruss, enum pruss_pru_id pru_id,
+ enum pruss_gpi_mode mode)
+{
+ if (pru_id < 0 || pru_id >= PRUSS_NUM_PRUS)
+ return -EINVAL;
+
+ if (mode < 0 || mode > PRUSS_GPI_MODE_MAX)
+ return -EINVAL;
+
+ return pruss_cfg_update(pruss, PRUSS_CFG_GPCFG(pru_id),
+ PRUSS_GPCFG_PRU_GPI_MODE_MASK,
+ mode << PRUSS_GPCFG_PRU_GPI_MODE_SHIFT);
+}
+EXPORT_SYMBOL_GPL(pruss_cfg_gpimode);
+
+/**
+ * pruss_cfg_miirt_enable() - Enable/disable MII RT Events
+ * @pruss: the pruss instance
+ * @enable: enable/disable
+ *
+ * Enable/disable the MII RT Events for the PRUSS.
+ *
+ * Return: 0 on success, or an error code otherwise
+ */
+int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable)
+{
+ u32 set = enable ? PRUSS_MII_RT_EVENT_EN : 0;
+
+ return pruss_cfg_update(pruss, PRUSS_CFG_MII_RT,
+ PRUSS_MII_RT_EVENT_EN, set);
+}
+EXPORT_SYMBOL_GPL(pruss_cfg_miirt_enable);
+
+/**
+ * pruss_cfg_xfr_enable() - Enable/disable XIN XOUT shift functionality
+ * @pruss: the pruss instance
+ * @pru_type: PRU core type identifier
+ * @enable: enable/disable
+ *
+ * Return: 0 on success, or an error code otherwise
+ */
+int pruss_cfg_xfr_enable(struct pruss *pruss, enum pru_type pru_type,
+ bool enable)
+{
+ u32 mask, set;
+
+ switch (pru_type) {
+ case PRU_TYPE_PRU:
+ mask = PRUSS_SPP_XFER_SHIFT_EN;
+ break;
+ case PRU_TYPE_RTU:
+ mask = PRUSS_SPP_RTU_XFR_SHIFT_EN;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ set = enable ? mask : 0;
+
+ return pruss_cfg_update(pruss, PRUSS_CFG_SPP, mask, set);
+}
+EXPORT_SYMBOL_GPL(pruss_cfg_xfr_enable);
+
static void pruss_of_free_clk_provider(void *data)
{
struct device_node *clk_mux_np = data;
diff --git a/include/linux/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h
index 33f930e0a0ce..bb001f712980 100644
--- a/include/linux/remoteproc/pruss.h
+++ b/include/linux/remoteproc/pruss.h
@@ -16,6 +16,33 @@
#define PRU_RPROC_DRVNAME "pru-rproc"
+/*
+ * enum pruss_gpi_mode - PRUSS GPI configuration modes, used
+ * to program the PRUSS_GPCFG0/1 registers
+ */
+enum pruss_gpi_mode {
+ PRUSS_GPI_MODE_DIRECT = 0,
+ PRUSS_GPI_MODE_PARALLEL,
+ PRUSS_GPI_MODE_28BIT_SHIFT,
+ PRUSS_GPI_MODE_MII,
+ PRUSS_GPI_MODE_MAX,
+};
+
+/**
+ * enum pru_type - PRU core type identifier
+ *
+ * @PRU_TYPE_PRU: Programmable Real-time Unit
+ * @PRU_TYPE_RTU: Auxiliary Programmable Real-Time Unit
+ * @PRU_TYPE_TX_PRU: Transmit Programmable Real-Time Unit
+ * @PRU_TYPE_MAX: just keep this one at the end
+ */
+enum pru_type {
+ PRU_TYPE_PRU = 0,
+ PRU_TYPE_RTU,
+ PRU_TYPE_TX_PRU,
+ PRU_TYPE_MAX,
+};
+
/**
* enum pruss_pru_id - PRU core identifiers
* @PRUSS_PRU0: PRU Core 0.
@@ -78,6 +105,11 @@ int pruss_request_mem_region(struct pruss *pruss, enum pruss_mem mem_id,
struct pruss_mem_region *region);
int pruss_release_mem_region(struct pruss *pruss,
struct pruss_mem_region *region);
+int pruss_cfg_gpimode(struct pruss *pruss, enum pruss_pru_id pru_id,
+ enum pruss_gpi_mode mode);
+int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable);
+int pruss_cfg_xfr_enable(struct pruss *pruss, enum pru_type pru_type,
+ bool enable);
#else
@@ -101,6 +133,25 @@ static inline int pruss_release_mem_region(struct pruss *pruss,
return -EOPNOTSUPP;
}
+static inline int pruss_cfg_gpimode(struct pruss *pruss,
+ enum pruss_pru_id pru_id,
+ enum pruss_gpi_mode mode)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline int pruss_cfg_miirt_enable(struct pruss *pruss, bool enable)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline int pruss_cfg_xfr_enable(struct pruss *pruss,
+ enum pru_type pru_type,
+ bool enable);
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
#endif /* CONFIG_TI_PRUSS */
#if IS_ENABLED(CONFIG_PRU_REMOTEPROC)
--
2.25.1
next prev parent reply other threads:[~2023-03-23 6:25 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-23 6:24 [PATCH v5 0/5] Introduce PRU platform consumer API MD Danish Anwar
2023-03-23 6:24 ` [PATCH v5 1/5] soc: ti: pruss: Add pruss_get()/put() API MD Danish Anwar
2023-03-27 20:58 ` Mathieu Poirier
2023-03-28 5:42 ` [EXTERNAL] " Md Danish Anwar
2023-03-29 17:59 ` Mathieu Poirier
2023-03-30 9:16 ` Md Danish Anwar
2023-03-23 6:24 ` [PATCH v5 2/5] soc: ti: pruss: Add pruss_{request,release}_mem_region() API MD Danish Anwar
2023-03-27 20:59 ` Mathieu Poirier
2023-03-23 6:24 ` [PATCH v5 3/5] soc: ti: pruss: Add pruss_cfg_read()/update() API MD Danish Anwar
2023-03-23 9:30 ` Roger Quadros
2023-03-27 21:01 ` Mathieu Poirier
2023-03-28 11:17 ` [EXTERNAL] " Md Danish Anwar
2023-03-30 10:00 ` Md Danish Anwar
2023-03-30 14:21 ` Mathieu Poirier
2023-03-31 10:22 ` Md Danish Anwar
2023-03-31 11:34 ` Md Danish Anwar
2023-03-30 15:06 ` Roger Quadros
2023-03-23 6:24 ` MD Danish Anwar [this message]
2023-03-23 9:32 ` [PATCH v5 4/5] soc: ti: pruss: Add helper functions to set GPI mode, MII_RT_event and XFR Roger Quadros
2023-03-23 6:24 ` [PATCH v5 5/5] soc: ti: pruss: Add helper functions to get/set PRUSS_CFG_GPMUX MD Danish Anwar
2023-03-27 21:04 ` Mathieu Poirier
2023-03-28 11:28 ` [EXTERNAL] " Md Danish Anwar
2023-03-29 18:04 ` Mathieu Poirier
2023-03-30 9:18 ` Md Danish Anwar
2023-03-23 7:00 ` [PATCH v5 0/5] Introduce PRU platform consumer API Tony Lindgren
2023-03-24 7:13 ` Md Danish Anwar
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