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Message-Id: <20251031-imx-dsp-2025-10-31-v1-10-282f66f55804@nxp.com>
Date: Fri, 31 Oct 2025 17:08:39 +0800
From: Peng Fan <peng.fan@....com>
To: Bjorn Andersson <andersson@...nel.org>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>, Philipp Zabel <p.zabel@...gutronix.de>,
Shengjiu Wang <shengjiu.wang@....com>, Frank Li <frank.li@....com>,
Daniel Baluta <daniel.baluta@....com>,
Iuliana Prodan <iuliana.prodan@....com>
Cc: linux-remoteproc@...r.kernel.org, imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Peng Fan <peng.fan@....com>
Subject: [PATCH 10/11] remoteproc: imx_dsp_rproc: Simplify
IMX_RPROC_RESET_CONTROLLER switch case
Introduce imx_dsp_rproc_reset_ctr_{start, stop, detect_mode}() helper
functions for i.MX variants using IMX_RPROC_RESET_CONTROLLER to manage
remote processors.
Allows the removal of the IMX_RPROC_RESET_CONTROLLER switch-case blocks
from imx_dsp_rproc_[start,stop,detect_mode](), resulting in cleaner and
more maintainable code.
No functional changes.
Signed-off-by: Peng Fan <peng.fan@....com>
---
drivers/remoteproc/imx_dsp_rproc.c | 69 +++++++++++++++++++++-----------------
drivers/remoteproc/imx_rproc.h | 2 --
2 files changed, 38 insertions(+), 33 deletions(-)
diff --git a/drivers/remoteproc/imx_dsp_rproc.c b/drivers/remoteproc/imx_dsp_rproc.c
index 56e94754d5c5feba112227c45b0f99a4fe868926..009e08df8fd42e1bf6ca00393e940071d33ec518 100644
--- a/drivers/remoteproc/imx_dsp_rproc.c
+++ b/drivers/remoteproc/imx_dsp_rproc.c
@@ -347,6 +347,13 @@ static int imx_dsp_rproc_mmio_start(struct rproc *rproc)
return regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask, dcfg->src_start);
}
+static int imx_dsp_rproc_reset_ctrl_start(struct rproc *rproc)
+{
+ struct imx_dsp_rproc *priv = rproc->priv;
+
+ return reset_control_deassert(priv->run_stall);
+}
+
static int imx_dsp_rproc_scu_api_start(struct rproc *rproc)
{
struct imx_dsp_rproc *priv = rproc->priv;
@@ -375,13 +382,7 @@ static int imx_dsp_rproc_start(struct rproc *rproc)
goto start_ret;
}
- switch (dcfg->method) {
- case IMX_RPROC_RESET_CONTROLLER:
- ret = reset_control_deassert(priv->run_stall);
- break;
- default:
- return -EOPNOTSUPP;
- }
+ return -EOPNOTSUPP;
start_ret:
if (ret)
@@ -401,6 +402,13 @@ static int imx_dsp_rproc_mmio_stop(struct rproc *rproc)
return regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask, dcfg->src_stop);
}
+static int imx_dsp_rproc_reset_ctrl_stop(struct rproc *rproc)
+{
+ struct imx_dsp_rproc *priv = rproc->priv;
+
+ return reset_control_assert(priv->run_stall);
+}
+
static int imx_dsp_rproc_scu_api_stop(struct rproc *rproc)
{
struct imx_dsp_rproc *priv = rproc->priv;
@@ -430,13 +438,7 @@ static int imx_dsp_rproc_stop(struct rproc *rproc)
goto stop_ret;
}
- switch (dcfg->method) {
- case IMX_RPROC_RESET_CONTROLLER:
- ret = reset_control_assert(priv->run_stall);
- break;
- default:
- return -EOPNOTSUPP;
- }
+ return -EOPNOTSUPP;
stop_ret:
if (ret)
@@ -1059,6 +1061,20 @@ static int imx_dsp_rproc_mmio_detect_mode(struct rproc *rproc)
return 0;
}
+static int imx_dsp_rproc_reset_ctrl_detect_mode(struct rproc *rproc)
+{
+ struct imx_dsp_rproc *priv = rproc->priv;
+ struct device *dev = rproc->dev.parent;
+
+ priv->run_stall = devm_reset_control_get_exclusive(dev, "runstall");
+ if (IS_ERR(priv->run_stall)) {
+ dev_err(dev, "Failed to get DSP runstall reset control\n");
+ return PTR_ERR(priv->run_stall);
+ }
+
+ return 0;
+}
+
static int imx_dsp_rproc_scu_api_detect_mode(struct rproc *rproc)
{
struct imx_dsp_rproc *priv = rproc->priv;
@@ -1082,26 +1098,11 @@ static int imx_dsp_rproc_detect_mode(struct imx_dsp_rproc *priv)
{
const struct imx_dsp_rproc_dcfg *dsp_dcfg = priv->dsp_dcfg;
const struct imx_rproc_dcfg *dcfg = dsp_dcfg->dcfg;
- struct device *dev = priv->rproc->dev.parent;
- int ret = 0;
if (dcfg->ops && dcfg->ops->detect_mode)
return dcfg->ops->detect_mode(priv->rproc);
- switch (dsp_dcfg->dcfg->method) {
- case IMX_RPROC_RESET_CONTROLLER:
- priv->run_stall = devm_reset_control_get_exclusive(dev, "runstall");
- if (IS_ERR(priv->run_stall)) {
- dev_err(dev, "Failed to get DSP runstall reset control\n");
- return PTR_ERR(priv->run_stall);
- }
- break;
- default:
- ret = -EOPNOTSUPP;
- break;
- }
-
- return ret;
+ return -EOPNOTSUPP;
}
static const char *imx_dsp_clks_names[DSP_RPROC_CLK_MAX] = {
@@ -1326,6 +1327,12 @@ static const struct imx_rproc_plat_ops imx_dsp_rproc_ops_mmio = {
.detect_mode = imx_dsp_rproc_mmio_detect_mode,
};
+static const struct imx_rproc_plat_ops imx_dsp_rproc_ops_reset_ctrl = {
+ .start = imx_dsp_rproc_reset_ctrl_start,
+ .stop = imx_dsp_rproc_reset_ctrl_stop,
+ .detect_mode = imx_dsp_rproc_reset_ctrl_detect_mode,
+};
+
static const struct imx_rproc_plat_ops imx_dsp_rproc_ops_scu_api = {
.start = imx_dsp_rproc_scu_api_start,
.stop = imx_dsp_rproc_scu_api_stop,
@@ -1336,7 +1343,7 @@ static const struct imx_rproc_plat_ops imx_dsp_rproc_ops_scu_api = {
static const struct imx_rproc_dcfg dsp_rproc_cfg_imx8mp = {
.att = imx_dsp_rproc_att_imx8mp,
.att_size = ARRAY_SIZE(imx_dsp_rproc_att_imx8mp),
- .method = IMX_RPROC_RESET_CONTROLLER,
+ .ops = &imx_dsp_rproc_ops_reset_ctrl,
};
static const struct imx_dsp_rproc_dcfg imx_dsp_rproc_cfg_imx8mp = {
diff --git a/drivers/remoteproc/imx_rproc.h b/drivers/remoteproc/imx_rproc.h
index a6b4625e8be76c6eb6a5d8ef45eb5f3aec5fe375..6a7359f05178a937d02b027fe4166319068bd65c 100644
--- a/drivers/remoteproc/imx_rproc.h
+++ b/drivers/remoteproc/imx_rproc.h
@@ -20,8 +20,6 @@ enum imx_rproc_method {
IMX_RPROC_NONE,
/* Through ARM SMCCC */
IMX_RPROC_SMC,
- /* Through Reset Controller API */
- IMX_RPROC_RESET_CONTROLLER,
};
/* dcfg flags */
--
2.37.1
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