Merge tag 'soc-drivers-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "The most notable updates this time are for Qualcomm Snapdragon
  platforms. The Inline-Crypto-Engine gets a new DT binding and driver,
  and a number of drivers now support additional Snapdragon variants, in
  particular the rsc, scm, geni, bwm, glink and socinfo, while the llcc
  (edac) and rpm drivers get notable functionality updates.

  Updates on other platforms include:

   - Various updates to the Mediatek mutex and mmsys drivers, including
     support for the Helio X10 SoC

   - Support for unidirectional mailbox channels in Arm SCMI firmware

   - Support for per cpu asynchronous notification in OP-TEE firmware

   - Minor updates for memory controller drivers.

   - Minor updates for Renesas, TI, Amlogic, Apple, Broadcom, Tegra,
     Allwinner, Versatile Express, Canaan, Microchip, Mediatek and i.MX
     SoC drivers, mainly updating the use of MODULE_LICENSE() macros and
     obsolete DT driver interfaces"

* tag 'soc-drivers-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (165 commits)
  soc: ti: smartreflex: Simplify getting the opam_sr pointer
  bus: vexpress-config: Add explicit of_platform.h include
  soc: mediatek: Kconfig: Add MTK_CMDQ dependency to MTK_MMSYS
  memory: mtk-smi: mt8365: Add SMI Support
  dt-bindings: memory-controllers: mediatek,smi-larb: add mt8365
  dt-bindings: memory-controllers: mediatek,smi-common: add mt8365
  memory: tegra: read values from correct device
  dt-bindings: crypto: Add Qualcomm Inline Crypto Engine
  soc: qcom: Make the Qualcomm UFS/SDCC ICE a dedicated driver
  dt-bindings: firmware: document Qualcomm QCM2290 SCM
  soc: qcom: rpmh-rsc: Support RSC v3 minor versions
  soc: qcom: smd-rpm: Use GFP_ATOMIC in write path
  soc/tegra: fuse: Remove nvmem root only access
  soc/tegra: cbb: tegra194: Use of_address_count() helper
  soc/tegra: cbb: Remove MODULE_LICENSE in non-modules
  ARM: tegra: Remove MODULE_LICENSE in non-modules
  soc/tegra: flowctrl: Use devm_platform_get_and_ioremap_resource()
  soc: tegra: cbb: Drop empty platform remove function
  firmware: arm_scmi: Add support for unidirectional mailbox channels
  dt-bindings: firmware: arm,scmi: Support mailboxes unidirectional channels
  ...

9 files changed, 116 insertions, 31 deletions

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index dbc474ff62b7..e7d97b59963b 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -2289,7 +2289,7 @@ static int scmi_xfer_info_init(struct scmi_info *sinfo)
 		return ret;
 
 	ret = __scmi_xfer_info_init(sinfo, &sinfo->tx_minfo);
-	if (!ret && idr_find(&sinfo->rx_idr, SCMI_PROTOCOL_BASE))
+	if (!ret && !idr_is_empty(&sinfo->rx_idr))
 		ret = __scmi_xfer_info_init(sinfo, &sinfo->rx_minfo);
 
 	return ret;
diff --git a/drivers/firmware/arm_scmi/mailbox.c b/drivers/firmware/arm_scmi/mailbox.c
index 112c285deb97..1efa5e9392c4 100644
--- a/drivers/firmware/arm_scmi/mailbox.c
+++ b/drivers/firmware/arm_scmi/mailbox.c
@@ -19,13 +19,15 @@
  * struct scmi_mailbox - Structure representing a SCMI mailbox transport
  *
  * @cl: Mailbox Client
- * @chan: Transmit/Receive mailbox channel
+ * @chan: Transmit/Receive mailbox uni/bi-directional channel
+ * @chan_receiver: Optional Receiver mailbox unidirectional channel
  * @cinfo: SCMI channel info
  * @shmem: Transmit/Receive shared memory area
  */
 struct scmi_mailbox {
 	struct mbox_client cl;
 	struct mbox_chan *chan;
+	struct mbox_chan *chan_receiver;
 	struct scmi_chan_info *cinfo;
 	struct scmi_shared_mem __iomem *shmem;
 };
@@ -48,30 +50,62 @@ static void rx_callback(struct mbox_client *cl, void *m)
 
 static bool mailbox_chan_available(struct device_node *of_node, int idx)
 {
+	int num_mb;
+
+	/*
+	 * Just check if bidirrectional channels are involved, and check the
+	 * index accordingly; proper full validation will be made later
+	 * in mailbox_chan_setup().
+	 */
+	num_mb = of_count_phandle_with_args(of_node, "mboxes", "#mbox-cells");
+	if (num_mb == 3 && idx == 1)
+		idx = 2;
+
 	return !of_parse_phandle_with_args(of_node, "mboxes",
 					   "#mbox-cells", idx, NULL);
 }
 
-static int mailbox_chan_validate(struct device *cdev)
+/**
+ * mailbox_chan_validate  - Validate transport configuration and map channels
+ *
+ * @cdev: Reference to the underlying transport device carrying the
+ *	  of_node descriptor to analyze.
+ * @a2p_rx_chan: A reference to an optional unidirectional channel to use
+ *		 for replies on the a2p channel. Set as zero if not present.
+ * @p2a_chan: A reference to the optional p2a channel.
+ *	      Set as zero if not present.
+ *
+ * At first, validate the transport configuration as described in terms of
+ * 'mboxes' and 'shmem', then determin which mailbox channel indexes are
+ * appropriate to be use in the current configuration.
+ *
+ * Return: 0 on Success or error
+ */
+static int mailbox_chan_validate(struct device *cdev,
+				 int *a2p_rx_chan, int *p2a_chan)
 {
 	int num_mb, num_sh, ret = 0;
 	struct device_node *np = cdev->of_node;
 
 	num_mb = of_count_phandle_with_args(np, "mboxes", "#mbox-cells");
 	num_sh = of_count_phandle_with_args(np, "shmem", NULL);
+	dev_dbg(cdev, "Found %d mboxes and %d shmems !\n", num_mb, num_sh);
+
 	/* Bail out if mboxes and shmem descriptors are inconsistent */
-	if (num_mb <= 0 || num_sh > 2 || num_mb != num_sh) {
-		dev_warn(cdev, "Invalid channel descriptor for '%s'\n",
-			 of_node_full_name(np));
+	if (num_mb <= 0 || num_sh <= 0 || num_sh > 2 || num_mb > 3 ||
+	    (num_mb == 1 && num_sh != 1) || (num_mb == 3 && num_sh != 2)) {
+		dev_warn(cdev,
+			 "Invalid channel descriptor for '%s' - mbs:%d  shm:%d\n",
+			 of_node_full_name(np), num_mb, num_sh);
 		return -EINVAL;
 	}
 
+	/* Bail out if provided shmem descriptors do not refer distinct areas  */
 	if (num_sh > 1) {
 		struct device_node *np_tx, *np_rx;
 
 		np_tx = of_parse_phandle(np, "shmem", 0);
 		np_rx = of_parse_phandle(np, "shmem", 1);
-		/* SCMI Tx and Rx shared mem areas have to be distinct */
 		if (!np_tx || !np_rx || np_tx == np_rx) {
 			dev_warn(cdev, "Invalid shmem descriptor for '%s'\n",
 				 of_node_full_name(np));
@@ -82,6 +116,29 @@ static int mailbox_chan_validate(struct device *cdev)
 		of_node_put(np_rx);
 	}
 
+	/* Calculate channels IDs to use depending on mboxes/shmem layout */
+	if (!ret) {
+		switch (num_mb) {
+		case 1:
+			*a2p_rx_chan = 0;
+			*p2a_chan = 0;
+			break;
+		case 2:
+			if (num_sh == 2) {
+				*a2p_rx_chan = 0;
+				*p2a_chan = 1;
+			} else {
+				*a2p_rx_chan = 1;
+				*p2a_chan = 0;
+			}
+			break;
+		case 3:
+			*a2p_rx_chan = 1;
+			*p2a_chan = 2;
+			break;
+		}
+	}
+
 	return ret;
 }
 
@@ -92,15 +149,18 @@ static int mailbox_chan_setup(struct scmi_chan_info *cinfo, struct device *dev,
 	struct device *cdev = cinfo->dev;
 	struct scmi_mailbox *smbox;
 	struct device_node *shmem;
-	int ret, idx = tx ? 0 : 1;
+	int ret, a2p_rx_chan, p2a_chan, idx = tx ? 0 : 1;
 	struct mbox_client *cl;
 	resource_size_t size;
 	struct resource res;
 
-	ret = mailbox_chan_validate(cdev);
+	ret = mailbox_chan_validate(cdev, &a2p_rx_chan, &p2a_chan);
 	if (ret)
 		return ret;
 
+	if (!tx && !p2a_chan)
+		return -ENODEV;
+
 	smbox = devm_kzalloc(dev, sizeof(*smbox), GFP_KERNEL);
 	if (!smbox)
 		return -ENOMEM;
@@ -130,15 +190,26 @@ static int mailbox_chan_setup(struct scmi_chan_info *cinfo, struct device *dev,
 	cl->tx_block = false;
 	cl->knows_txdone = tx;
 
-	smbox->chan = mbox_request_channel(cl, tx ? 0 : 1);
+	smbox->chan = mbox_request_channel(cl, tx ? 0 : p2a_chan);
 	if (IS_ERR(smbox->chan)) {
 		ret = PTR_ERR(smbox->chan);
 		if (ret != -EPROBE_DEFER)
-			dev_err(cdev, "failed to request SCMI %s mailbox\n",
-				tx ? "Tx" : "Rx");
+			dev_err(cdev,
+				"failed to request SCMI %s mailbox\n", desc);
 		return ret;
 	}
 
+	/* Additional unidirectional channel for TX if needed */
+	if (tx && a2p_rx_chan) {
+		smbox->chan_receiver = mbox_request_channel(cl, a2p_rx_chan);
+		if (IS_ERR(smbox->chan_receiver)) {
+			ret = PTR_ERR(smbox->chan_receiver);
+			if (ret != -EPROBE_DEFER)
+				dev_err(cdev, "failed to request SCMI Tx Receiver mailbox\n");
+			return ret;
+		}
+	}
+
 	cinfo->transport_info = smbox;
 	smbox->cinfo = cinfo;
 
@@ -152,8 +223,10 @@ static int mailbox_chan_free(int id, void *p, void *data)
 
 	if (smbox && !IS_ERR(smbox->chan)) {
 		mbox_free_channel(smbox->chan);
+		mbox_free_channel(smbox->chan_receiver);
 		cinfo->transport_info = NULL;
 		smbox->chan = NULL;
+		smbox->chan_receiver = NULL;
 		smbox->cinfo = NULL;
 	}
 
diff --git a/drivers/firmware/arm_scmi/optee.c b/drivers/firmware/arm_scmi/optee.c
index 929720387102..e123de6e8c67 100644
--- a/drivers/firmware/arm_scmi/optee.c
+++ b/drivers/firmware/arm_scmi/optee.c
@@ -403,7 +403,7 @@ out:
 static int setup_shmem(struct device *dev, struct scmi_chan_info *cinfo,
 		       struct scmi_optee_channel *channel)
 {
-	if (of_find_property(cinfo->dev->of_node, "shmem", NULL))
+	if (of_property_present(cinfo->dev->of_node, "shmem"))
 		return setup_static_shmem(dev, cinfo, channel);
 	else
 		return setup_dynamic_shmem(dev, channel);
diff --git a/drivers/firmware/imx/imx-scu.c b/drivers/firmware/imx/imx-scu.c
index dca79caccd01..47db49911e7b 100644
--- a/drivers/firmware/imx/imx-scu.c
+++ b/drivers/firmware/imx/imx-scu.c
@@ -310,9 +310,8 @@ static int imx_scu_probe(struct platform_device *pdev)
 		sc_chan->ch = mbox_request_channel_byname(cl, chan_name);
 		if (IS_ERR(sc_chan->ch)) {
 			ret = PTR_ERR(sc_chan->ch);
-			if (ret != -EPROBE_DEFER)
-				dev_err(dev, "Failed to request mbox chan %s ret %d\n",
-					chan_name, ret);
+			dev_err_probe(dev, ret, "Failed to request mbox chan %s\n",
+				      chan_name);
 			kfree(chan_name);
 			return ret;
 		}
diff --git a/drivers/firmware/imx/scu-pd.c b/drivers/firmware/imx/scu-pd.c
index 2a4f07423365..84b673427073 100644
--- a/drivers/firmware/imx/scu-pd.c
+++ b/drivers/firmware/imx/scu-pd.c
@@ -180,7 +180,11 @@ static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = {
 
 	/* LVDS SS */
 	{ "lvds0", IMX_SC_R_LVDS_0, 1, false, 0 },
+	{ "lvds0-pwm", IMX_SC_R_LVDS_0_PWM_0, 1, false, 0 },
+	{ "lvds0-lpi2c", IMX_SC_R_LVDS_0_I2C_0, 2, true, 0 },
 	{ "lvds1", IMX_SC_R_LVDS_1, 1, false, 0 },
+	{ "lvds1-pwm", IMX_SC_R_LVDS_1_PWM_0, 1, false, 0 },
+	{ "lvds1-lpi2c", IMX_SC_R_LVDS_1_I2C_0, 2, true, 0 },
 
 	/* DC SS */
 	{ "dc0", IMX_SC_R_DC_0, 1, false, 0 },
diff --git a/drivers/firmware/meson/meson_sm.c b/drivers/firmware/meson/meson_sm.c
index 3f5ff9ed668e..798bcdb05d84 100644
--- a/drivers/firmware/meson/meson_sm.c
+++ b/drivers/firmware/meson/meson_sm.c
@@ -311,11 +311,14 @@ static int __init meson_sm_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, fw);
 
-	pr_info("secure-monitor enabled\n");
+	if (devm_of_platform_populate(dev))
+		goto out_in_base;
 
 	if (sysfs_create_group(&pdev->dev.kobj, &meson_sm_sysfs_attr_group))
 		goto out_in_base;
 
+	pr_info("secure-monitor enabled\n");
+
 	return 0;
 
 out_in_base:
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index b1e11f85b805..fde33acd46b7 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -905,7 +905,7 @@ static int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region,
  * Return negative errno on failure or 0 on success with @srcvm updated.
  */
 int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
-			unsigned int *srcvm,
+			u64 *srcvm,
 			const struct qcom_scm_vmperm *newvm,
 			unsigned int dest_cnt)
 {
@@ -922,9 +922,9 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
 	__le32 *src;
 	void *ptr;
 	int ret, i, b;
-	unsigned long srcvm_bits = *srcvm;
+	u64 srcvm_bits = *srcvm;
 
-	src_sz = hweight_long(srcvm_bits) * sizeof(*src);
+	src_sz = hweight64(srcvm_bits) * sizeof(*src);
 	mem_to_map_sz = sizeof(*mem_to_map);
 	dest_sz = dest_cnt * sizeof(*destvm);
 	ptr_sz = ALIGN(src_sz, SZ_64) + ALIGN(mem_to_map_sz, SZ_64) +
@@ -937,8 +937,10 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
 	/* Fill source vmid detail */
 	src = ptr;
 	i = 0;
-	for_each_set_bit(b, &srcvm_bits, BITS_PER_LONG)
-		src[i++] = cpu_to_le32(b);
+	for (b = 0; b < BITS_PER_TYPE(u64); b++) {
+		if (srcvm_bits & BIT(b))
+			src[i++] = cpu_to_le32(b);
+	}
 
 	/* Fill details of mem buff to map */
 	mem_to_map = ptr + ALIGN(src_sz, SZ_64);
@@ -1506,8 +1508,7 @@ static int qcom_scm_probe(struct platform_device *pdev)
 static void qcom_scm_shutdown(struct platform_device *pdev)
 {
 	/* Clean shutdown, disable download mode to allow normal restart */
-	if (download_mode)
-		qcom_scm_set_download_mode(false);
+	qcom_scm_set_download_mode(false);
 }
 
 static const struct of_device_id qcom_scm_dt_match[] = {
@@ -1542,6 +1543,7 @@ static const struct of_device_id qcom_scm_dt_match[] = {
 	},
 	{ .compatible = "qcom,scm-msm8994" },
 	{ .compatible = "qcom,scm-msm8996" },
+	{ .compatible = "qcom,scm-sm6375", .data = (void *)SCM_HAS_CORE_CLK },
 	{ .compatible = "qcom,scm" },
 	{}
 };
diff --git a/drivers/firmware/tegra/bpmp-debugfs.c b/drivers/firmware/tegra/bpmp-debugfs.c
index 3ca2b5d9e66f..6dfe3d34109e 100644
--- a/drivers/firmware/tegra/bpmp-debugfs.c
+++ b/drivers/firmware/tegra/bpmp-debugfs.c
@@ -193,7 +193,7 @@ static int mrq_debug_read(struct tegra_bpmp *bpmp, const char *name,
 		},
 	};
 	u32 fd = 0, len = 0;
-	int remaining, err;
+	int remaining, err, close_err;
 
 	mutex_lock(&bpmp_debug_lock);
 	err = mrq_debug_open(bpmp, name, &fd, &len, 0);
@@ -231,7 +231,9 @@ static int mrq_debug_read(struct tegra_bpmp *bpmp, const char *name,
 	*nbytes = len;
 
 close:
-	err = mrq_debug_close(bpmp, fd);
+	close_err = mrq_debug_close(bpmp, fd);
+	if (!err)
+		err = close_err;
 out:
 	mutex_unlock(&bpmp_debug_lock);
 	return err;
@@ -319,7 +321,7 @@ static int bpmp_debug_show(struct seq_file *m, void *p)
 		},
 	};
 	u32 fd = 0, len = 0;
-	int remaining, err;
+	int remaining, err, close_err;
 
 	filename = get_filename(bpmp, file, fnamebuf, sizeof(fnamebuf));
 	if (!filename)
@@ -353,7 +355,9 @@ static int bpmp_debug_show(struct seq_file *m, void *p)
 	}
 
 close:
-	err = mrq_debug_close(bpmp, fd);
+	close_err = mrq_debug_close(bpmp, fd);
+	if (!err)
+		err = close_err;
 out:
 	mutex_unlock(&bpmp_debug_lock);
 	return err;
diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c
index 042c2043929d..8b5e5daa9fae 100644
--- a/drivers/firmware/tegra/bpmp.c
+++ b/drivers/firmware/tegra/bpmp.c
@@ -764,19 +764,19 @@ static int tegra_bpmp_probe(struct platform_device *pdev)
 	if (err < 0)
 		goto free_mrq;
 
-	if (of_find_property(pdev->dev.of_node, "#clock-cells", NULL)) {
+	if (of_property_present(pdev->dev.of_node, "#clock-cells")) {
 		err = tegra_bpmp_init_clocks(bpmp);
 		if (err < 0)
 			goto free_mrq;
 	}
 
-	if (of_find_property(pdev->dev.of_node, "#reset-cells", NULL)) {
+	if (of_property_present(pdev->dev.of_node, "#reset-cells")) {
 		err = tegra_bpmp_init_resets(bpmp);
 		if (err < 0)
 			goto free_mrq;
 	}
 
-	if (of_find_property(pdev->dev.of_node, "#power-domain-cells", NULL)) {
+	if (of_property_present(pdev->dev.of_node, "#power-domain-cells")) {
 		err = tegra_bpmp_init_powergates(bpmp);
 		if (err < 0)
 			goto free_mrq;