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Wed, 14 Oct 2026 03:33:00 -0700 (PDT) Received: from nevers1dd ([118.95.161.132]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-358ee8a3387sm42371533eec.15.2026.10.14.03.32.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Oct 2026 03:33:00 -0700 (PDT) From: Siddharth Karanam To: andersson@kernel.org, mathieu.poirier@linaro.org Cc: linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org, Siddharth Karanam Subject: [PATCH v2 1/2] remoteproc: Add ti_sci_dev_ops abstraction Date: Wed, 14 Oct 2026 16:02:40 +0530 Message-ID: <20261014103241.3847-2-sid9.karanam@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20261014103241.3847-1-sid9.karanam@gmail.com> References: <20261014103241.3847-1-sid9.karanam@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Instead of invoking ti_sci_handle's ti_sci_dev_ops member directly in the driver code, this abstracts the property read of "ti,sci-dev-id" and the function pointers supported by ti_sci_dev_ops such as is_on, get_device and put_device. The goal of the patch is to maintain a single source of origin for all ti_sci_dev_ops call sites. Any stray calls to any dev_ops function pointer members in driver code should eventually be abstracted through this header. Signed-off-by: Siddharth Karanam --- drivers/remoteproc/ti_k3_common.c | 16 ++--- drivers/remoteproc/ti_k3_common.h | 4 +- drivers/remoteproc/ti_k3_dsp_remoteproc.c | 14 ++-- drivers/remoteproc/ti_k3_m4_remoteproc.c | 13 ++-- drivers/remoteproc/ti_k3_r5_remoteproc.c | 40 +++++------ drivers/remoteproc/ti_sci_dev.h | 82 +++++++++++++++++++++++ 6 files changed, 120 insertions(+), 49 deletions(-) create mode 100644 drivers/remoteproc/ti_sci_dev.h diff --git a/drivers/remoteproc/ti_k3_common.c b/drivers/remoteproc/ti_k3_common.c index 3cb8ae5d72f6..befa9a9bea3a 100644 --- a/drivers/remoteproc/ti_k3_common.c +++ b/drivers/remoteproc/ti_k3_common.c @@ -32,6 +32,7 @@ #include "omap_remoteproc.h" #include "remoteproc_internal.h" +#include "ti_sci_dev.h" #include "ti_sci_proc.h" #include "ti_k3_common.h" @@ -120,8 +121,7 @@ int k3_rproc_reset(struct k3_rproc *kproc) if (ret) dev_err(dev, "local-reset assert failed (%pe)\n", ERR_PTR(ret)); } else { - ret = kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci, - kproc->ti_sci_id); + ret = ti_sci_dev_put_device(kproc->tsd); if (ret) dev_err(dev, "module-reset assert failed (%pe)\n", ERR_PTR(ret)); } @@ -140,13 +140,11 @@ int k3_rproc_release(struct k3_rproc *kproc) ret = reset_control_deassert(kproc->reset); if (ret) { dev_err(dev, "local-reset deassert failed, (%pe)\n", ERR_PTR(ret)); - if (kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci, - kproc->ti_sci_id)) + if (ti_sci_dev_put_device(kproc->tsd)) dev_warn(dev, "module-reset assert back failed\n"); } } else { - ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci, - kproc->ti_sci_id); + ret = ti_sci_dev_get_device(kproc->tsd); if (ret) dev_err(dev, "module-reset deassert failed (%pe)\n", ERR_PTR(ret)); } @@ -223,8 +221,7 @@ int k3_rproc_prepare(struct rproc *rproc) } } - ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci, - kproc->ti_sci_id); + ret = ti_sci_dev_get_device(kproc->tsd); if (ret) { dev_err(dev, "could not deassert module-reset for internal RAM loading\n"); return ret; @@ -253,8 +250,7 @@ int k3_rproc_unprepare(struct rproc *rproc) if (rproc->state == RPROC_DETACHED) return 0; - ret = kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci, - kproc->ti_sci_id); + ret = ti_sci_dev_put_device(kproc->tsd); if (ret) { dev_err(dev, "module-reset assert failed\n"); return ret; diff --git a/drivers/remoteproc/ti_k3_common.h b/drivers/remoteproc/ti_k3_common.h index aee3c28dbe51..7ba0903ebe0a 100644 --- a/drivers/remoteproc/ti_k3_common.h +++ b/drivers/remoteproc/ti_k3_common.h @@ -72,8 +72,8 @@ struct k3_rproc_dev_data { * @reset: reset control handle * @data: pointer to DSP-specific device data * @tsp: TI-SCI processor control handle + * @tsd: TI-SCI device control handle * @ti_sci: TI-SCI handle - * @ti_sci_id: TI-SCI device identifier * @mbox: mailbox channel handle * @client: mailbox client to request the mailbox channel * @priv: void pointer to carry any private data @@ -88,8 +88,8 @@ struct k3_rproc { struct reset_control *reset; const struct k3_rproc_dev_data *data; struct ti_sci_proc *tsp; + struct ti_sci_dev *tsd; const struct ti_sci_handle *ti_sci; - u32 ti_sci_id; struct mbox_chan *mbox; struct mbox_client client; void *priv; diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c index d6ceea6dc920..b6042fe7bae7 100644 --- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c +++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c @@ -19,6 +19,7 @@ #include "omap_remoteproc.h" #include "remoteproc_internal.h" +#include "ti_sci_dev.h" #include "ti_sci_proc.h" #include "ti_k3_common.h" @@ -69,7 +70,6 @@ static const struct rproc_ops k3_dsp_rproc_ops = { static int k3_dsp_rproc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; const struct k3_rproc_dev_data *data; struct k3_rproc *kproc; struct rproc *rproc; @@ -110,10 +110,6 @@ static int k3_dsp_rproc_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(kproc->ti_sci), "failed to get ti-sci handle\n"); - ret = of_property_read_u32(np, "ti,sci-dev-id", &kproc->ti_sci_id); - if (ret) - return dev_err_probe(dev, ret, "missing 'ti,sci-dev-id' property\n"); - kproc->reset = devm_reset_control_get_exclusive(dev, NULL); if (IS_ERR(kproc->reset)) return dev_err_probe(dev, PTR_ERR(kproc->reset), @@ -124,6 +120,11 @@ static int k3_dsp_rproc_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(kproc->tsp), "failed to construct ti-sci proc control\n"); + kproc->tsd = ti_sci_dev_of_get_tsd(dev, kproc->ti_sci); + if (IS_ERR(kproc->tsd)) + return dev_err_probe(dev, PTR_ERR(kproc->tsd), + "failed to construct ti-sci dev control\n"); + ret = ti_sci_proc_request(kproc->tsp); if (ret < 0) { dev_err_probe(dev, ret, "ti_sci_proc_request failed\n"); @@ -141,8 +142,7 @@ static int k3_dsp_rproc_probe(struct platform_device *pdev) if (ret) return dev_err_probe(dev, ret, "reserved memory init failed\n"); - ret = kproc->ti_sci->ops.dev_ops.is_on(kproc->ti_sci, kproc->ti_sci_id, - NULL, &p_state); + ret = ti_sci_dev_is_on(kproc->tsd, NULL, &p_state); if (ret) return dev_err_probe(dev, ret, "failed to get initial state, mode cannot be determined\n"); diff --git a/drivers/remoteproc/ti_k3_m4_remoteproc.c b/drivers/remoteproc/ti_k3_m4_remoteproc.c index 3a11fd24eb52..ddf8cb9974ca 100644 --- a/drivers/remoteproc/ti_k3_m4_remoteproc.c +++ b/drivers/remoteproc/ti_k3_m4_remoteproc.c @@ -18,6 +18,7 @@ #include "omap_remoteproc.h" #include "remoteproc_internal.h" +#include "ti_sci_dev.h" #include "ti_sci_proc.h" #include "ti_k3_common.h" @@ -70,10 +71,6 @@ static int k3_m4_rproc_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(kproc->ti_sci), "failed to get ti-sci handle\n"); - ret = of_property_read_u32(dev->of_node, "ti,sci-dev-id", &kproc->ti_sci_id); - if (ret) - return dev_err_probe(dev, ret, "missing 'ti,sci-dev-id' property\n"); - kproc->reset = devm_reset_control_get_exclusive(dev, NULL); if (IS_ERR(kproc->reset)) return dev_err_probe(dev, PTR_ERR(kproc->reset), "failed to get reset\n"); @@ -83,6 +80,11 @@ static int k3_m4_rproc_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(kproc->tsp), "failed to construct ti-sci proc control\n"); + kproc->tsd = ti_sci_dev_of_get_tsd(dev, kproc->ti_sci); + if (IS_ERR(kproc->tsd)) + return dev_err_probe(dev, PTR_ERR(kproc->tsd), + "failed to construct ti-sci dev control\n"); + ret = ti_sci_proc_request(kproc->tsp); if (ret < 0) return dev_err_probe(dev, ret, "ti_sci_proc_request failed\n"); @@ -98,8 +100,7 @@ static int k3_m4_rproc_probe(struct platform_device *pdev) if (ret) return dev_err_probe(dev, ret, "reserved memory init failed\n"); - ret = kproc->ti_sci->ops.dev_ops.is_on(kproc->ti_sci, kproc->ti_sci_id, - &r_state, &p_state); + ret = ti_sci_dev_is_on(kproc->tsd, &r_state, &p_state); if (ret) return dev_err_probe(dev, ret, "failed to get initial state, mode cannot be determined\n"); diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c index b1d04d082e44..a387848ac400 100644 --- a/drivers/remoteproc/ti_k3_r5_remoteproc.c +++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c @@ -25,6 +25,7 @@ #include "omap_remoteproc.h" #include "remoteproc_internal.h" +#include "ti_sci_dev.h" #include "ti_sci_proc.h" #include "ti_k3_common.h" @@ -140,8 +141,7 @@ static int k3_r5_split_reset(struct k3_rproc *kproc) return ret; } - ret = kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci, - kproc->ti_sci_id); + ret = ti_sci_dev_put_device(kproc->tsd); if (ret) { dev_err(kproc->dev, "module-reset assert failed, ret = %d\n", ret); @@ -156,8 +156,7 @@ static int k3_r5_split_release(struct k3_rproc *kproc) { int ret; - ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci, - kproc->ti_sci_id); + ret = ti_sci_dev_get_device(kproc->tsd); if (ret) { dev_err(kproc->dev, "module-reset deassert failed, ret = %d\n", ret); @@ -168,8 +167,7 @@ static int k3_r5_split_release(struct k3_rproc *kproc) if (ret) { dev_err(kproc->dev, "local-reset deassert failed, ret = %d\n", ret); - if (kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci, - kproc->ti_sci_id)) + if (ti_sci_dev_put_device(kproc->tsd)) dev_warn(kproc->dev, "module-reset assert back failed\n"); } @@ -196,8 +194,7 @@ static int k3_r5_lockstep_reset(struct k3_r5_cluster *cluster) /* disable PSC modules on all applicable cores */ list_for_each_entry(core, &cluster->cores, elem) { kproc = core->kproc; - ret = kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci, - kproc->ti_sci_id); + ret = ti_sci_dev_put_device(kproc->tsd); if (ret) { dev_err(core->dev, "module-reset assert failed, ret = %d\n", ret); @@ -210,8 +207,7 @@ static int k3_r5_lockstep_reset(struct k3_r5_cluster *cluster) unroll_module_reset: list_for_each_entry_continue_reverse(core, &cluster->cores, elem) { kproc = core->kproc; - if (kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci, - kproc->ti_sci_id)) + if (ti_sci_dev_put_device(kproc->tsd)) dev_warn(core->dev, "module-reset assert back failed\n"); } core = list_last_entry(&cluster->cores, struct k3_r5_core, elem); @@ -233,8 +229,7 @@ static int k3_r5_lockstep_release(struct k3_r5_cluster *cluster) /* enable PSC modules on all applicable cores */ list_for_each_entry_reverse(core, &cluster->cores, elem) { kproc = core->kproc; - ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci, - kproc->ti_sci_id); + ret = ti_sci_dev_get_device(kproc->tsd); if (ret) { dev_err(core->dev, "module-reset deassert failed, ret = %d\n", ret); @@ -264,8 +259,7 @@ static int k3_r5_lockstep_release(struct k3_r5_cluster *cluster) unroll_module_reset: list_for_each_entry_from(core, &cluster->cores, elem) { kproc = core->kproc; - if (kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci, - kproc->ti_sci_id)) + if (ti_sci_dev_put_device(kproc->tsd)) dev_warn(core->dev, "module-reset assert back failed\n"); } @@ -827,8 +821,7 @@ static int k3_r5_rproc_configure_mode(struct k3_rproc *kproc) core0 = list_first_entry(&cluster->cores, struct k3_r5_core, elem); - ret = kproc->ti_sci->ops.dev_ops.is_on(kproc->ti_sci, kproc->ti_sci_id, - &r_state, &c_state); + ret = ti_sci_dev_is_on(kproc->tsd, &r_state, &c_state); if (ret) { dev_err(cdev, "failed to get initial state, mode cannot be determined, ret = %d\n", ret); @@ -1023,7 +1016,6 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev) struct device *dev = &pdev->dev; struct k3_rproc *kproc; struct k3_r5_core *core, *core1; - struct device_node *np; struct device *cdev; const char *fw_name; struct rproc *rproc; @@ -1032,7 +1024,6 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev) core1 = list_last_entry(&cluster->cores, struct k3_r5_core, elem); list_for_each_entry(core, &cluster->cores, elem) { cdev = core->dev; - np = dev_of_node(cdev); ret = rproc_of_parse_firmware(cdev, 0, &fw_name); if (ret) { dev_err(dev, "failed to parse firmware-name property, ret = %d\n", @@ -1067,12 +1058,6 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev) goto out; } - ret = of_property_read_u32(np, "ti,sci-dev-id", &kproc->ti_sci_id); - if (ret) { - dev_err(cdev, "missing 'ti,sci-dev-id' property\n"); - goto out; - } - kproc->reset = devm_reset_control_get_exclusive(cdev, NULL); if (IS_ERR(kproc->reset)) { ret = dev_err_probe(cdev, PTR_ERR(kproc->reset), @@ -1087,6 +1072,13 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev) goto out; } + kproc->tsd = ti_sci_dev_of_get_tsd(cdev, kproc->ti_sci); + if (IS_ERR(kproc->tsd)) { + ret = dev_err_probe(cdev, PTR_ERR(kproc->tsd), + "failed to construct ti-sci dev control\n"); + goto out; + } + ret = k3_r5_core_of_get_internal_memories(to_platform_device(cdev), kproc); if (ret) { dev_err(cdev, "failed to get internal memories, ret = %d\n", diff --git a/drivers/remoteproc/ti_sci_dev.h b/drivers/remoteproc/ti_sci_dev.h new file mode 100644 index 000000000000..897998a97d7f --- /dev/null +++ b/drivers/remoteproc/ti_sci_dev.h @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Texas Instruments TI-SCI Device Controller Helper Functions + * + * Copyright (C) 2026 Texas Instruments Incorporated - https://www.ti.com/ + */ + +#ifndef REMOTEPROC_TI_SCI_DEV_H +#define REMOTEPROC_TI_SCI_DEV_H + +#include +#include + +/** + * struct ti_sci_dev - structure representing a device control client + * @sci: cached TI-SCI protocol handle + * @ops: cached TI-SCI device ops + * @dev: cached client device pointer + * @dev_id: TI-SCI device id for the consumer remoteproc device + */ +struct ti_sci_dev { + const struct ti_sci_handle *sci; + const struct ti_sci_dev_ops *ops; + struct device *dev; + u32 dev_id; +}; + +static inline +struct ti_sci_dev *ti_sci_dev_of_get_tsd(struct device *dev, + const struct ti_sci_handle *sci) +{ + struct ti_sci_dev *tsd; + int ret; + + tsd = devm_kzalloc(dev, sizeof(*tsd), GFP_KERNEL); + if (!tsd) + return ERR_PTR(-ENOMEM); + + ret = of_property_read_u32(dev_of_node(dev), "ti,sci-dev-id", + &tsd->dev_id); + if (ret < 0) + return ERR_PTR(ret); + + tsd->dev = dev; + tsd->sci = sci; + tsd->ops = &sci->ops.dev_ops; + + return tsd; +} + +static inline int ti_sci_dev_is_on(struct ti_sci_dev *tsd, bool *r_state, + bool *c_state) +{ + int ret; + + ret = tsd->ops->is_on(tsd->sci, tsd->dev_id, r_state, c_state); + if (ret) + dev_err(tsd->dev, "ti-sci device is_on failed: %d\n", ret); + return ret; +} + +static inline int ti_sci_dev_get_device(struct ti_sci_dev *tsd) +{ + int ret; + + ret = tsd->ops->get_device(tsd->sci, tsd->dev_id); + if (ret) + dev_err(tsd->dev, "ti-sci device get failed: %d\n", ret); + return ret; +} + +static inline int ti_sci_dev_put_device(struct ti_sci_dev *tsd) +{ + int ret; + + ret = tsd->ops->put_device(tsd->sci, tsd->dev_id); + if (ret) + dev_err(tsd->dev, "ti-sci device put failed: %d\n", ret); + return ret; +} + +#endif /* REMOTEPROC_TI_SCI_DEV_H */ -- 2.55.0