Merge tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big set of char/misc and other small driver subsystem
  changes for 6.6-rc1.

  Stuff all over the place here, lots of driver updates and changes and
  new additions. Short summary is:

   - new IIO drivers and updates

   - Interconnect driver updates

   - fpga driver updates and additions

   - fsi driver updates

   - mei driver updates

   - coresight driver updates

   - nvmem driver updates

   - counter driver updates

   - lots of smaller misc and char driver updates and additions

  All of these have been in linux-next for a long time with no reported
  problems"

* tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (267 commits)
  nvmem: core: Notify when a new layout is registered
  nvmem: core: Do not open-code existing functions
  nvmem: core: Return NULL when no nvmem layout is found
  nvmem: core: Create all cells before adding the nvmem device
  nvmem: u-boot-env:: Replace zero-length array with DECLARE_FLEX_ARRAY() helper
  nvmem: sec-qfprom: Add Qualcomm secure QFPROM support
  dt-bindings: nvmem: sec-qfprom: Add bindings for secure qfprom
  dt-bindings: nvmem: Add compatible for QCM2290
  nvmem: Kconfig: Fix typo "drive" -> "driver"
  nvmem: Explicitly include correct DT includes
  nvmem: add new NXP QorIQ eFuse driver
  dt-bindings: nvmem: Add t1023-sfp efuse support
  dt-bindings: nvmem: qfprom: Add compatible for MSM8226
  nvmem: uniphier: Use devm_platform_get_and_ioremap_resource()
  nvmem: qfprom: do some cleanup
  nvmem: stm32-romem: Use devm_platform_get_and_ioremap_resource()
  nvmem: rockchip-efuse: Use devm_platform_get_and_ioremap_resource()
  nvmem: meson-mx-efuse: Convert to devm_platform_ioremap_resource()
  nvmem: lpc18xx_otp: Convert to devm_platform_ioremap_resource()
  nvmem: brcm_nvram: Use devm_platform_get_and_ioremap_resource()
  ...

3 files changed, 119 insertions, 3 deletions

diff --git a/drivers/firmware/google/Kconfig b/drivers/firmware/google/Kconfig
index 1bc7cbf2f65d..41b78f5cb735 100644
--- a/drivers/firmware/google/Kconfig
+++ b/drivers/firmware/google/Kconfig
@@ -59,7 +59,7 @@ config GOOGLE_MEMCONSOLE_X86_LEGACY
 
 config GOOGLE_FRAMEBUFFER_COREBOOT
 	tristate "Coreboot Framebuffer"
-	depends on FB_SIMPLE
+	depends on FB_SIMPLE || DRM_SIMPLEDRM
 	depends on GOOGLE_COREBOOT_TABLE
 	help
 	  This option enables the kernel to search for a framebuffer in
diff --git a/drivers/firmware/stratix10-rsu.c b/drivers/firmware/stratix10-rsu.c
index ab3074705380..4f7a7abada48 100644
--- a/drivers/firmware/stratix10-rsu.c
+++ b/drivers/firmware/stratix10-rsu.c
@@ -33,6 +33,10 @@
 #define INVALID_RETRY_COUNTER		0xFF
 #define INVALID_DCMF_VERSION		0xFF
 #define INVALID_DCMF_STATUS		0xFFFFFFFF
+#define INVALID_SPT_ADDRESS		0x0
+
+#define RSU_GET_SPT_CMD			0x5A
+#define RSU_GET_SPT_RESP_LEN		(4 * sizeof(unsigned int))
 
 typedef void (*rsu_callback)(struct stratix10_svc_client *client,
 			     struct stratix10_svc_cb_data *data);
@@ -58,6 +62,9 @@ typedef void (*rsu_callback)(struct stratix10_svc_client *client,
  * @dcmf_status.dcmf3: dcmf3 status
  * @retry_counter: the current image's retry counter
  * @max_retry: the preset max retry value
+ * @spt0_address: address of spt0
+ * @spt1_address: address of spt1
+ * @get_spt_response_buf: response from sdm for get_spt command
  */
 struct stratix10_rsu_priv {
 	struct stratix10_svc_chan *chan;
@@ -89,6 +96,11 @@ struct stratix10_rsu_priv {
 
 	unsigned int retry_counter;
 	unsigned int max_retry;
+
+	unsigned long spt0_address;
+	unsigned long spt1_address;
+
+	unsigned int *get_spt_response_buf;
 };
 
 /**
@@ -258,6 +270,36 @@ static void rsu_dcmf_status_callback(struct stratix10_svc_client *client,
 	complete(&priv->completion);
 }
 
+static void rsu_get_spt_callback(struct stratix10_svc_client *client,
+				 struct stratix10_svc_cb_data *data)
+{
+	struct stratix10_rsu_priv *priv = client->priv;
+	unsigned long *mbox_err = (unsigned long *)data->kaddr1;
+	unsigned long *resp_len = (unsigned long *)data->kaddr2;
+
+	if (data->status != BIT(SVC_STATUS_OK) || (*mbox_err) ||
+	    (*resp_len != RSU_GET_SPT_RESP_LEN))
+		goto error;
+
+	priv->spt0_address = priv->get_spt_response_buf[0];
+	priv->spt0_address <<= 32;
+	priv->spt0_address |= priv->get_spt_response_buf[1];
+
+	priv->spt1_address = priv->get_spt_response_buf[2];
+	priv->spt1_address <<= 32;
+	priv->spt1_address |= priv->get_spt_response_buf[3];
+
+	goto complete;
+
+error:
+	dev_err(client->dev, "failed to get SPTs\n");
+
+complete:
+	stratix10_svc_free_memory(priv->chan, priv->get_spt_response_buf);
+	priv->get_spt_response_buf = NULL;
+	complete(&priv->completion);
+}
+
 /**
  * rsu_send_msg() - send a message to Intel service layer
  * @priv: pointer to rsu private data
@@ -287,6 +329,14 @@ static int rsu_send_msg(struct stratix10_rsu_priv *priv,
 	if (arg)
 		msg.arg[0] = arg;
 
+	if (command == COMMAND_MBOX_SEND_CMD) {
+		msg.arg[1] = 0;
+		msg.payload = NULL;
+		msg.payload_length = 0;
+		msg.payload_output = priv->get_spt_response_buf;
+		msg.payload_length_output = RSU_GET_SPT_RESP_LEN;
+	}
+
 	ret = stratix10_svc_send(priv->chan, &msg);
 	if (ret < 0)
 		goto status_done;
@@ -571,6 +621,34 @@ static ssize_t notify_store(struct device *dev,
 	return count;
 }
 
+static ssize_t spt0_address_show(struct device *dev,
+				 struct device_attribute *attr, char *buf)
+{
+	struct stratix10_rsu_priv *priv = dev_get_drvdata(dev);
+
+	if (!priv)
+		return -ENODEV;
+
+	if (priv->spt0_address == INVALID_SPT_ADDRESS)
+		return -EIO;
+
+	return scnprintf(buf, PAGE_SIZE, "0x%08lx\n", priv->spt0_address);
+}
+
+static ssize_t spt1_address_show(struct device *dev,
+				 struct device_attribute *attr, char *buf)
+{
+	struct stratix10_rsu_priv *priv = dev_get_drvdata(dev);
+
+	if (!priv)
+		return -ENODEV;
+
+	if (priv->spt1_address == INVALID_SPT_ADDRESS)
+		return -EIO;
+
+	return scnprintf(buf, PAGE_SIZE, "0x%08lx\n", priv->spt1_address);
+}
+
 static DEVICE_ATTR_RO(current_image);
 static DEVICE_ATTR_RO(fail_image);
 static DEVICE_ATTR_RO(state);
@@ -589,6 +667,8 @@ static DEVICE_ATTR_RO(dcmf2_status);
 static DEVICE_ATTR_RO(dcmf3_status);
 static DEVICE_ATTR_WO(reboot_image);
 static DEVICE_ATTR_WO(notify);
+static DEVICE_ATTR_RO(spt0_address);
+static DEVICE_ATTR_RO(spt1_address);
 
 static struct attribute *rsu_attrs[] = {
 	&dev_attr_current_image.attr,
@@ -609,6 +689,8 @@ static struct attribute *rsu_attrs[] = {
 	&dev_attr_dcmf3_status.attr,
 	&dev_attr_reboot_image.attr,
 	&dev_attr_notify.attr,
+	&dev_attr_spt0_address.attr,
+	&dev_attr_spt1_address.attr,
 	NULL
 };
 
@@ -638,11 +720,13 @@ static int stratix10_rsu_probe(struct platform_device *pdev)
 	priv->dcmf_version.dcmf1 = INVALID_DCMF_VERSION;
 	priv->dcmf_version.dcmf2 = INVALID_DCMF_VERSION;
 	priv->dcmf_version.dcmf3 = INVALID_DCMF_VERSION;
-	priv->max_retry = INVALID_RETRY_COUNTER;
 	priv->dcmf_status.dcmf0 = INVALID_DCMF_STATUS;
 	priv->dcmf_status.dcmf1 = INVALID_DCMF_STATUS;
 	priv->dcmf_status.dcmf2 = INVALID_DCMF_STATUS;
 	priv->dcmf_status.dcmf3 = INVALID_DCMF_STATUS;
+	priv->max_retry = INVALID_RETRY_COUNTER;
+	priv->spt0_address = INVALID_SPT_ADDRESS;
+	priv->spt1_address = INVALID_SPT_ADDRESS;
 
 	mutex_init(&priv->lock);
 	priv->chan = stratix10_svc_request_channel_byname(&priv->client,
@@ -692,6 +776,20 @@ static int stratix10_rsu_probe(struct platform_device *pdev)
 		stratix10_svc_free_channel(priv->chan);
 	}
 
+	priv->get_spt_response_buf =
+		stratix10_svc_allocate_memory(priv->chan, RSU_GET_SPT_RESP_LEN);
+
+	if (IS_ERR(priv->get_spt_response_buf)) {
+		dev_err(dev, "failed to allocate get spt buffer\n");
+	} else {
+		ret = rsu_send_msg(priv, COMMAND_MBOX_SEND_CMD,
+				   RSU_GET_SPT_CMD, rsu_get_spt_callback);
+		if (ret) {
+			dev_err(dev, "Error, getting SPT table %i\n", ret);
+			stratix10_svc_free_channel(priv->chan);
+		}
+	}
+
 	return ret;
 }
 
diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index 2d674126160f..c693da60e9a9 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -37,6 +37,7 @@
 #define SVC_NUM_CHANNEL				3
 #define FPGA_CONFIG_DATA_CLAIM_TIMEOUT_MS	200
 #define FPGA_CONFIG_STATUS_TIMEOUT_SEC		30
+#define BYTE_TO_WORD_SIZE              4
 
 /* stratix10 service layer clients */
 #define STRATIX10_RSU				"stratix10-rsu"
@@ -361,6 +362,13 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data,
 		cb_data->kaddr2 = svc_pa_to_va(res.a2);
 		cb_data->kaddr3 = &res.a3;
 		break;
+	case COMMAND_MBOX_SEND_CMD:
+		cb_data->status = BIT(SVC_STATUS_OK);
+		cb_data->kaddr1 = &res.a1;
+		/* SDM return size in u8. Convert size to u32 word */
+		res.a2 = res.a2 * BYTE_TO_WORD_SIZE;
+		cb_data->kaddr2 = &res.a2;
+		break;
 	default:
 		pr_warn("it shouldn't happen\n");
 		break;
@@ -534,6 +542,15 @@ static int svc_normal_to_secure_thread(void *data)
 			a1 = 0;
 			a2 = 0;
 			break;
+		case COMMAND_MBOX_SEND_CMD:
+			a0 = INTEL_SIP_SMC_MBOX_SEND_CMD;
+			a1 = pdata->arg[0];
+			a2 = (unsigned long)pdata->paddr;
+			a3 = (unsigned long)pdata->size / BYTE_TO_WORD_SIZE;
+			a4 = pdata->arg[1];
+			a5 = (unsigned long)pdata->paddr_output;
+			a6 = (unsigned long)pdata->size_output / BYTE_TO_WORD_SIZE;
+			break;
 		default:
 			pr_warn("it shouldn't happen\n");
 			break;
@@ -597,6 +614,7 @@ static int svc_normal_to_secure_thread(void *data)
 			case COMMAND_FCS_DATA_ENCRYPTION:
 			case COMMAND_FCS_DATA_DECRYPTION:
 			case COMMAND_FCS_RANDOM_NUMBER_GEN:
+			case COMMAND_MBOX_SEND_CMD:
 				cbdata->status = BIT(SVC_STATUS_INVALID_PARAM);
 				cbdata->kaddr1 = NULL;
 				cbdata->kaddr2 = NULL;
@@ -756,7 +774,7 @@ svc_create_memory_pool(struct platform_device *pdev,
 	paddr = begin;
 	size = end - begin;
 	va = devm_memremap(dev, paddr, size, MEMREMAP_WC);
-	if (!va) {
+	if (IS_ERR(va)) {
 		dev_err(dev, "fail to remap shared memory\n");
 		return ERR_PTR(-EINVAL);
 	}