update to 1740446fb32

1.Fix spidev delay-usec cannot work
2.Fix spi transfer failed when use gpio cs
3.Support EC200N-CN 4G model
4.Fix alert/critical temperature to 75/105 for 2k300
5.Enable ch341,pl2303 for 2k300_defconfig

arch/loongarch/boot/dts/loongson/loongson2k300.dtsi

@@ -766,10 +766,20 @@
 			interrupt-parent = <&icu>;
 			interrupts = <48>;
 			dma-mask = <0x0 0xffffffff>;
-			/* Use for most devices */
+			/* DWC2_LOONGSON_FIX_DMA:
-			//loongson,dwc2-fix = <DWC2_LOONGSON_FIX_DMA>;
+			Used for most devices, such as USB storage and USB touchscreens.
-			/* Use for 4G model*/
+			However, network devices may experience packet loss. */
-			loongson,dwc2-fix = <DWC2_LOONGSON_FIX_DELAY>;
+			loongson,dwc2-fix = <DWC2_LOONGSON_FIX_DMA>;
+			/* DWC2_LOONGSON_FIX_DELAY:
+			Deprecated. It causes USB to operate slowly.
+			However, the 4G model can still dial up. Maybe optimize later. */
+			//loongson,dwc2-fix = <DWC2_LOONGSON_FIX_DELAY>;
+			/* DWC2_LOONGSON_FIX_NONE:
+			Original. Some USB devices cannot initialize when first powered up.
+			However, network devices do not experience packet loss.
+			Therefore, if we confirm the use of a USB-network device, then select this configuration. */
+			//loongson,dwc2-fix = <DWC2_LOONGSON_FIX_NONE>;
+
 			//dr_mode = "peripheral";
 			/* Optional for that dr_mode = "host" or dr_mode = "peripheral" */
 		};
@@ -847,13 +857,13 @@
 
 				trips {
 					cpu_alert: cpu-alert {
-						temperature = <55000>;
+						temperature = <75000>;
 						hysteresis = <5000>;
 						type = "active";
 					};
 
 					cpu_crit: cpu-crit {
-						temperature = <125000>;
+						temperature = <105000>;
 						hysteresis = <5000>;
 						type = "critical";
 					};

arch/loongarch/boot/dts/loongson/ls2k300_pai_common.dtsi

@@ -270,3 +270,7 @@
 	loongson,sound-card-name = "ES8388";
 };
 
+&otg {
+	// PAI 板卡定死使用 wifi
+	loongson,dwc2-fix = <DWC2_LOONGSON_FIX_NONE>;
+};

arch/loongarch/configs/loongson_2k300_defconfig

@@ -553,6 +553,8 @@ CONFIG_USB_ACM=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_DWC2=y
 CONFIG_USB_SERIAL=y
+CONFIG_USB_SERIAL_CH341=y
+CONFIG_USB_SERIAL_PL2303=y
 CONFIG_USB_SERIAL_OPTION=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_ETH=y

drivers/iio/temperature/max31865.c

@@ -361,6 +361,10 @@ static int max31865_probe(struct spi_device *spi)
 	data = iio_priv(indio_dev);
 	data->spi = spi;
 	data->filter_50hz = false;
+
+	if (of_property_read_bool(spi->dev.of_node, "filter_50hz"))
+		data->filter_50hz = true;
+
 	mutex_init(&data->lock);
 
 	indio_dev->info = &max31865_info;

drivers/spi/spi-ls-io.c

@@ -22,7 +22,7 @@
 #include <linux/unaligned/generic.h>
 #include <linux/unaligned/le_byteshift.h>
 
-/*SPI IO registers */ 
+/*SPI IO registers */
 #define REG_CR1	0x00
 #define REG_CR2	0x04
 #define REG_CR3	0x08
@@ -140,6 +140,11 @@ struct ls_spiio_priv {
 	u8 dsize;
 	struct gpio_desc **cs_gpios;
 	struct device *dev;
+
+	struct work_struct work;
+	struct workqueue_struct	*work_queue;
+	struct list_head xfer_queue;
+	spinlock_t lock;
 };
 
 static int ls_spiio_idle_sr1(struct ls_spiio_priv* priv, u32 bit)
@@ -153,10 +158,14 @@ static int ls_spiio_idle_sr1(struct ls_spiio_priv* priv, u32 bit)
 static int ls_spiio_active_cs(struct ls_spiio_priv* priv, int cs)
 {
 	int active = 0;
+	unsigned int cr1_reg;
 
-	if (!priv->cs_gpios)
+	cr1_reg = ls_spiio_read_reg(priv, REG_CR1);
-		ls_spiio_write_reg(priv, REG_CR1, BIT_CR1_SSREV | BIT_CR1_SPE);
+	cr1_reg &= 0x1ff;
-	else
+	cr1_reg |= BIT_CR1_SSREV | BIT_CR1_SPE;
+
+	ls_spiio_write_reg(priv, REG_CR1, cr1_reg);
+	if (priv->cs_gpios)
 		gpiod_set_raw_value(priv->cs_gpios[cs], active);
 
 	return 0;
@@ -167,12 +176,19 @@ static int ls_spiio_clear_cs(struct ls_spiio_priv* priv)
 	struct spi_master* master = priv->master;
 	int clear = 1;
 	int i;
+	unsigned int cr1_reg;
 
-	if (!priv->cs_gpios)
+	cr1_reg = ls_spiio_read_reg(priv, REG_CR1);
-		ls_spiio_write_reg(priv, REG_CR1, BIT_CR1_SSREV);
+	cr1_reg &= 0x1ff;
-	else
+	cr1_reg |= BIT_CR1_SPE;
+	cr1_reg ^= BIT_CR1_SPE;
+
+	ls_spiio_write_reg(priv, REG_CR1, cr1_reg);
+
+	if (priv->cs_gpios) {
 		for (i = 0; i < master->num_chipselect; i++)
 			gpiod_set_raw_value(priv->cs_gpios[i], clear);
+	}
 
 	return 0;
 }
@@ -360,6 +376,39 @@ static int __spi_setup(struct spi_device *spi)
 	return 0;
 }
 
+static void __spi_work(struct work_struct *work)
+{
+	struct ls_spiio_priv* priv = container_of(work, struct ls_spiio_priv, work);
+
+	spin_lock(&priv->lock);
+	while (!list_empty(&priv->xfer_queue)) {
+		struct spi_message *m;
+		struct spi_device  *spi;
+		struct spi_transfer *t = NULL;
+
+		m = container_of(priv->xfer_queue.next, struct spi_message, queue);
+
+		list_del_init(&m->queue);
+		spin_unlock(&priv->lock);
+		spi = m->spi;
+
+		ls_spiio_active_cs(priv, spi->chip_select);
+		list_for_each_entry(t, &m->transfers, transfer_list) {
+			/*setup spi clock*/
+			ls_spiio_set_clk_timing(priv, t->speed_hz, spi->mode);
+			m->actual_length += ls_spiio_xfer(priv,
+					(u8*)t->tx_buf, (u8*)t->rx_buf, t->len);
+
+			spi_delay_exec(&t->delay, t);
+		}
+		ls_spiio_clear_cs(priv);
+
+		m->complete(m->context);
+		spin_lock(&priv->lock);
+	}
+	spin_unlock(&priv->lock);
+}
+
 static int __spi_transfer(struct spi_device *spi, struct spi_message *m)
 {
 	struct ls_spiio_priv* priv = spi_master_get_devdata(spi->master);
@@ -367,16 +416,34 @@ static int __spi_transfer(struct spi_device *spi, struct spi_message *m)
 	m->actual_length = 0;
 	m->status = 0;
 
-	ls_spiio_active_cs(priv, spi->chip_select);
+	if (list_empty(&m->transfers) || !m->complete)
-	list_for_each_entry(t, &m->transfers, transfer_list) {
+		return -EINVAL;
-		/*setup spi clock*/
-		ls_spiio_set_clk_timing(priv, t->speed_hz, spi->mode);
-		m->actual_length += ls_spiio_xfer(priv,
-				(u8*)t->tx_buf, (u8*)t->rx_buf, t->len);
-	}
-	ls_spiio_clear_cs(priv);
 
-	m->complete(m->context);
+	list_for_each_entry(t, &m->transfers, transfer_list) {
+
+		if (t->tx_buf == NULL && t->rx_buf == NULL && t->len) {
+			dev_err(&spi->dev,
+					"message rejected : "
+					"invalid transfer data buffers\n");
+			goto msg_rejected;
+		}
+
+		/*other things not check*/
+
+	}
+
+	spin_lock(&priv->lock);
+	list_add_tail(&m->queue, &priv->xfer_queue);
+	queue_work(priv->work_queue, &priv->work);
+	spin_unlock(&priv->lock);
+
+	return 0;
+msg_rejected:
+
+	m->status = -EINVAL;
+	if (m->complete)
+		m->complete(m->context);
+	return -EINVAL;
 
 	return 0;
 }
@@ -440,6 +507,11 @@ static int drv_ls_spiio_probe(struct platform_device *pdev)
 
 	ls_spiio_init(priv);
 
+	priv->work_queue = create_singlethread_workqueue(pdev->name);
+	INIT_WORK(&priv->work, __spi_work);
+	INIT_LIST_HEAD(&priv->xfer_queue);
+	spin_lock_init(&priv->lock);
+
 	ret = spi_register_master(master);
 	if (ret)
 	{

drivers/spi/spi-ls.c

@@ -266,6 +266,8 @@ static void ls_spi_work(struct work_struct *work)
 			if (t->len)
 				m->actual_length +=
 					ls_spi_write_read(spi, t);
+
+			spi_delay_exec(&t->delay, t);
 		}
 
 		set_cs(ls_spi, spi, 1);

drivers/thermal/ls2k_thermal.c

@@ -16,6 +16,7 @@
 #define LS2K_TSENSOR_CTRL_LO		(0x8)
 #define LS2K_TSENSOR_STATUS			(0x10)
 #define LS2K_TSENSOR_OUT			(0x14)
+#define LS2K_TSENSOR_CFG			(0x18)
 
 #define LS2K_MIN_TEMP -40
 #define LS2K_MAX_TEMP 125
@@ -77,14 +78,65 @@ static int ls2k_tsensor_set(struct ls2k_thermal_data *data,
 	return 0;
 }
 
+static int warning_2k300_old_fuse_tip;
+
 static int ls2k_thermal_get_temp(void *__data, int *temp)
 {
 	struct ls2k_thermal_data *data = __data;
 	u32 reg_val;
+	int temp_val;
+	int old_fuse_2k300;
 
 	reg_val = readl(data->regs + LS2K_TSENSOR_OUT);
-	if (data->cpu_type == ID_2K300)
+	if (data->cpu_type == ID_2K300) {
-		*temp = ((reg_val & 0x7ff) * 569) - 394700;
+		int version;
+		int val_fix;
+		writel(0xff03, data->regs + LS2K_TSENSOR_CFG); // 0x18
+		reg_val = readl(data->regs + LS2K_TSENSOR_OUT);
+		reg_val &= 0x7ff;
+
+		version = readl(data->regs + 0x2AF0); // 0x16003ff0
+		version >>= 4;
+		version &= 1;
+
+		if(version)
+			val_fix = readl(data->regs + 0x2AF4) & 0xffff; // 0x16003ff4
+		else
+			val_fix = (readl(data->regs + 0x2AF0) >> 20) & 0xffff; // 0x16003ff0
+
+		if (val_fix & 0x8000)
+			val_fix =  -(val_fix & 0x7fff);
+		else
+			val_fix =  val_fix & 0x7fff;
+
+		reg_val += val_fix;
+		temp_val = reg_val * 570 - 394700;
+		/*
+		 * fix old 2k300 use old fuse that will let kernel crash critical temperature
+		 */
+		old_fuse_2k300 = 0;
+		reg_val = temp_val;
+		if (temp_val < -55000) {
+			pr_info("look temp_val is %d\n", temp_val);
+			old_fuse_2k300 = 1;
+			temp_val = -55000;
+		}
+		else if (temp_val > 125000) {
+			pr_info("look temp_val is %d\n", temp_val);
+			old_fuse_2k300 = 1;
+			temp_val = 125000;
+		}
+		if (old_fuse_2k300)
+		{
+			if (!warning_2k300_old_fuse_tip) {
+				pr_err("%s this 2k300 use old fuse so thermal not right!(%d)\n", __func__, reg_val);
+				warning_2k300_old_fuse_tip = 1;
+			}
+			reg_val = readl(data->regs + LS2K_TSENSOR_OUT);
+			temp_val = ((reg_val & 0x7ff) * 569) - 394700;
+		}
+		*temp = temp_val;
+	}
 	else
 		*temp = ((reg_val & 0xff) - 100) * 1000;
 

drivers/usb/dwc2/core.h

@@ -517,6 +517,23 @@ struct dwc2_core_params {
 
 	bool change_speed_quirk;
 
+/*
+ * DWC2_LOONGSON_FIX_NONE:
+ * Original. Some USB devices cannot initialize when first powered up.
+ * However, network devices do not experience packet loss.
+ * Therefore, if we confirm the use of a USB-network device, then select this configuration.
+ *
+ * DWC2_LOONGSON_FIX_DMA:
+ * Used for most devices, such as USB storage and USB touchscreens.
+ * However, network devices may experience packet loss.
+ *
+ * DWC2_LOONGSON_FIX_DELAY:
+ * Deprecated. It causes USB to operate slowly.
+ * However, the 4G model can still dial up. Maybe optimize later.
+ *
+ * DWC2_LOONGSON_FIX_DELAY_FULL:
+ * Deprecated.
+*/
 #define DWC2_LOONGSON_FIX_NONE		0
 #define DWC2_LOONGSON_FIX_DMA		1
 #define DWC2_LOONGSON_FIX_DELAY		2

drivers/usb/serial/ch341.h

@@ -0,0 +1,153 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *
+ * Includes for ch341.c
+ *
+ */
+
+#ifndef _CH341_H
+#define _CH341_H
+
+/*
+ * Baud rate and default timeout
+ */
+#define DEFAULT_BAUD_RATE 9600
+#define DEFAULT_TIMEOUT 2000
+
+/*
+ * CMSPAR, some architectures can't have space and mark parity.
+ */
+#ifndef CMSPAR
+#define CMSPAR 0
+#endif
+
+/*
+ * Major and minor numbers.
+ */
+#define CH341_TTY_MAJOR 169
+#define CH341_TTY_MINORS 256
+
+/*
+ * Requests.
+ */
+#define USB_RT_CH341 (USB_TYPE_CLASS | USB_RECIP_INTERFACE)
+
+#define CMD_R 0x95
+#define CMD_W 0x9A
+#define CMD_C1 0xA1
+#define CMD_C2 0xA4
+#define CMD_C3 0x5F
+
+#define CH341_CTO_O 0x10
+#define CH341_CTO_D 0x20
+#define CH341_CTO_R 0x40
+#define CH341_CTI_C 0x01
+#define CH341_CTI_DS 0x02
+#define CH341_CTRL_RI 0x04
+#define CH341_CTI_DC 0x08
+#define CH341_CTI_ST 0x0f
+
+#define CH341_CTT_M BIT(3)
+#define CH341_CTT_F (BIT(2) | BIT(6))
+#define CH341_CTT_P BIT(2)
+#define CH341_CTT_O BIT(1)
+
+#define CH341_L_ER 0x80
+#define CH341_L_ET 0x40
+#define CH341_L_PS 0x38
+#define CH341_L_PM 0x28
+#define CH341_L_PE 0x18
+#define CH341_L_PO 0x08
+#define CH341_L_SB 0x04
+#define CH341_L_D8 0x03
+#define CH341_L_D7 0x02
+#define CH341_L_D6 0x01
+#define CH341_L_D5 0x00
+
+#define CH341_RB 0x05
+#define CH341_RL 0x18
+#define CH341_NB 0x01
+
+#define CH341_NW 2
+#define CH341_NR 4
+
+struct ch341_wb {
+	unsigned char *buf;
+	dma_addr_t dmah;
+	int len;
+	int use;
+	struct urb *urb;
+	struct ch341 *instance;
+};
+
+struct ch341_rb {
+	int size;
+	unsigned char *base;
+	dma_addr_t dma;
+	int index;
+	struct ch341 *instance;
+};
+
+struct usb_ch341_line_coding {
+	__le32 dwDTERate;
+	__u8 bCharFormat;
+#define USB_CH341_1_STOP_BITS 0
+#define USB_CH341_1_5_STOP_BITS 1
+#define USB_CH341_2_STOP_BITS 2
+
+	__u8 bParityType;
+#define USB_CH341_NO_PARITY 0
+#define USB_CH341_ODD_PARITY 1
+#define USB_CH341_EVEN_PARITY 2
+#define USB_CH341_MARK_PARITY 3
+#define USB_CH341_SPACE_PARITY 4
+
+	__u8 bDataBits;
+} __attribute__((packed));
+
+struct ch341 {
+	struct usb_device *dev; /* the corresponding usb device */
+	struct usb_interface *data; /* data interface */
+	struct tty_port port; /* our tty port data */
+	struct urb *ctrlurb; /* urbs */
+	u8 *ctrl_buffer; /* buffers of urbs */
+	dma_addr_t ctrl_dma; /* dma handles of buffers */
+	struct ch341_wb wb[CH341_NW];
+	unsigned long read_urbs_free;
+	struct urb *read_urbs[CH341_NR];
+	struct ch341_rb read_buffers[CH341_NR];
+	int rx_buflimit;
+	int rx_endpoint;
+	spinlock_t read_lock;
+	int write_used; /* number of non-empty write buffers */
+	int transmitting;
+	spinlock_t write_lock;
+	struct mutex mutex;
+	bool disconnected;
+	struct usb_ch341_line_coding line; /* baudrate, data format */
+	struct work_struct work; /* used for line discipline waking up */
+	unsigned int ctrlin; /* input lines (CTS, DSR, DCD, RI) */
+	unsigned int ctrlout; /* output control lines (DTR, RTS) */
+	struct async_icount iocount; /* counters for control line changes */
+	struct async_icount oldcount; /* for comparison of counter */
+	wait_queue_head_t wioctl; /* for ioctl */
+	unsigned int writesize; /* max packet size */
+	unsigned int readsize, ctrlsize; /* buffer sizes for freeing */
+	unsigned int minor; /* ch341 minor number */
+	unsigned char clocal; /* termios CLOCAL */
+	unsigned int susp_count; /* number of suspended interfaces */
+	u8 bInterval;
+	struct usb_anchor delayed; /* used for a device about to be woken */
+	unsigned long quirks;
+	bool hardflow;
+};
+
+/* constants describing various quirks and errors */
+#define NO_UNION_NORMAL BIT(0)
+#define SINGLE_RX_URB BIT(1)
+#define NO_CAP_LINE BIT(2)
+#define NO_DATA_INTERFACE BIT(4)
+#define IGNORE_DEVICE BIT(5)
+#define QUIRK_CONTROL_LINE_STATE BIT(6)
+#define CLEAR_HALT_CONDITIONS BIT(7)
+#endif

drivers/usb/serial/option.c

@@ -250,6 +250,7 @@ static void option_instat_callback(struct urb *urb);
 #define QUECTEL_PRODUCT_EP06			0x0306
 #define QUECTEL_PRODUCT_EM12			0x0512
 #define QUECTEL_PRODUCT_RM500Q			0x0800
+#define QUECTEL_PRODUCT_EC200N_CN		0x6002
 #define QUECTEL_PRODUCT_EC200A_CN		0x6005
 #define QUECTEL_PRODUCT_EC200T			0x6026
 #define QUECTEL_PRODUCT_EC200U_CN		0x0901
@@ -1120,6 +1121,7 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0, 0) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0xff, 0x10),
 	  .driver_info = ZLP },
+	{ USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC200N_CN) },
 	{ USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC200A_CN) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC200T, 0xff, 0, 0) },
 	{ USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC200U_CN) },

include/dt-bindings/usb/dwc2-loongson-fix.h

@@ -1,6 +1,23 @@
 #ifndef __DT_DWC2_LOONGSON_FIX_H
 #define __DT_DWC2_LOONGSON_FIX_H
 
+/*
+ * DWC2_LOONGSON_FIX_NONE:
+ * Original. Some USB devices cannot initialize when first powered up.
+ * However, network devices do not experience packet loss.
+ * Therefore, if we confirm the use of a USB-network device, then select this configuration.
+ *
+ * DWC2_LOONGSON_FIX_DMA:
+ * Used for most devices, such as USB storage and USB touchscreens.
+ * However, network devices may experience packet loss.
+ *
+ * DWC2_LOONGSON_FIX_DELAY:
+ * Deprecated. It causes USB to operate slowly.
+ * However, the 4G model can still dial up. Maybe optimize later.
+ *
+ * DWC2_LOONGSON_FIX_DELAY_FULL:
+ * Deprecated.
+*/
 #define DWC2_LOONGSON_FIX_NONE		0
 #define DWC2_LOONGSON_FIX_DMA		1
 #define DWC2_LOONGSON_FIX_DELAY		2