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-rw-r--r--kernel/cp2103-3.11.10.patch491
1 files changed, 491 insertions, 0 deletions
diff --git a/kernel/cp2103-3.11.10.patch b/kernel/cp2103-3.11.10.patch
new file mode 100644
index 0000000..949d962
--- /dev/null
+++ b/kernel/cp2103-3.11.10.patch
@@ -0,0 +1,491 @@
+diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
+index 0eae4ba..3e0b558 100644
+--- a/drivers/usb/serial/cp210x.c
++++ b/drivers/usb/serial/cp210x.c
+@@ -23,14 +23,22 @@
+ #include <linux/usb.h>
+ #include <linux/uaccess.h>
+ #include <linux/usb/serial.h>
++#include <linux/cp210x.h>
+
+ #define DRIVER_DESC "Silicon Labs CP210x RS232 serial adaptor driver"
+
++#define CP210x_MAX_DEVICE_STRLEN 256
++#define CP210x_MAX_PRODUCT_STRLEN 126
++#define CP210x_MAX_SERIAL_STRLEN 63
++#define CP210x_MAX_MAXPOWER 250
++
++
+ /*
+ * Function Prototypes
+ */
+ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *);
+ static void cp210x_close(struct usb_serial_port *);
++static int cp210x_ioctl(struct tty_struct *, struct file *, unsigned long);
+ static void cp210x_get_termios(struct tty_struct *, struct usb_serial_port *);
+ static void cp210x_get_termios_port(struct usb_serial_port *port,
+ unsigned int *cflagp, unsigned int *baudp);
+@@ -198,6 +206,7 @@ static struct usb_serial_driver cp210x_device = {
+ .bulk_out_size = 256,
+ .open = cp210x_open,
+ .close = cp210x_close,
++ .ioctl = cp210x_ioctl,
+ .break_ctl = cp210x_break_ctl,
+ .set_termios = cp210x_set_termios,
+ .tiocmget = cp210x_tiocmget,
+@@ -286,6 +295,185 @@ static struct usb_serial_driver * const serial_drivers[] = {
+ #define CONTROL_WRITE_DTR 0x0100
+ #define CONTROL_WRITE_RTS 0x0200
+
++
++
++/*
++ * cp210x_ctlmsg
++ * A generic usb control message interface.
++ * Returns the actual size of the data read or written within the message, 0
++ * if no data were read or written, or a negative value to indicate an error.
++ */
++static int cp210x_ctlmsg(struct usb_serial_port *port, u8 request,
++ u8 requestype, u16 value, u16 index, void *data, u16 size)
++{
++ struct usb_serial *serial = port->serial;
++ u8 *tbuf;
++ int ret;
++
++ if (!(tbuf = kmalloc(size, GFP_KERNEL)))
++ return -ENOMEM;
++ if (requestype & 0x80) {
++ ret = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), request,
++ requestype, value, index, tbuf, size, 300);
++ if (ret > 0 && size)
++ memcpy(data, tbuf, size);
++ } else {
++ if (size)
++ memcpy(tbuf, data, size);
++ ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), request,
++ requestype, value, index, tbuf, size, 300);
++ }
++ kfree(tbuf);
++ if (ret < 0 && ret != -EPIPE) {
++ dev_err(&port->dev, "cp210x: control failed cmd rqt %u "
++ "rq %u len %u ret %d\n", requestype, request, size, ret);
++ }
++ return ret;
++}
++
++
++static int cp210x_reset(struct usb_serial_port *port)
++{
++ /* Is this better than usb_device_reset? It may be. Once a client issues
++ * the reset ioctl, it must disconnect and reconnect, since the USB
++ * connections are torn down. We also ignore the error return, since
++ * the part resets and doesn't send one...
++ */
++ cp210x_ctlmsg(port, 0xff, 0x40, 0x0008, 0x00, 0, 0);
++
++ return 0;
++}
++
++// // cp210x_get_partnum
++
++static inline int cp210x_setu16(struct usb_serial_port *port, int cmd,
++ unsigned int value)
++{
++ return cp210x_ctlmsg(port, 0xff, 0x40, 0x3700 | (cmd & 0xff),
++ value, 0, 0);
++}
++
++
++// make_usb_string
++/*
++ * cp210x_setstr
++ *
++ * Set a USB string descriptor using proprietary cp210x control messages.
++ * Return the number of characters actually written.
++ */
++static int cp210x_setstr(struct usb_serial_port *port, int cmd, uint8_t *usbstr,size_t len)
++{
++ int ret = cp210x_ctlmsg(port, 0xff, 0x40, 0x3700 | (cmd & 0xff), 0,
++ usbstr, len);
++ dbg("%s - cmd 0x%02x len %d ret %d", __FUNCTION__, cmd, len, ret);
++ printk(KERN_ERR "%s - cmd 0x%02x len %d ret %d %x %x %x %x %x %x", __FUNCTION__, cmd, len, ret,
++ usbstr[0],usbstr[1],usbstr[2],usbstr[3],usbstr[4],usbstr[5]);
++ return ret;
++}
++
++
++
++/* Set all gpio simultaneously */
++static int cp210x_gpioset(struct usb_serial_port *port, int gpio)
++{
++ dbg("%s - port %d, gpio = 0x%.2x", __FUNCTION__, port->number, gpio);
++
++ return cp210x_ctlmsg(port, 0xff, 0x40, 0x37e1,
++ ((uint16_t)gpio << 8) | CP_GPIO_MASK, 0, 0);
++}
++
++/* Set select gpio bits */
++static int cp210x_gpiosetb(struct usb_serial_port *port, int set, int clear)
++{
++ u16 gpio = 0;
++
++ gpio |= set | clear;
++ gpio |= set << 8;
++
++ dbg("%s - port %d, gpiob = 0x%.4x", __FUNCTION__, port->number, gpio);
++
++ /* FIXME: how about REQTYPE_HOST_TO_DEVICE instead of 0x40? */
++ return cp210x_ctlmsg(port, 0xff, 0x40, 0x37e1, gpio, 0, 0);
++}
++
++static int cp210x_gpioget(struct usb_serial_port *port, int *gpio_ret)
++{
++ int ret;
++ u8 gpio;
++
++ dbg("%s - port %d", __FUNCTION__, port->number);
++
++ /* FIXME: how about REQTYPE_DEVICE_TO_HOST instead of 0xc0? */
++ ret = cp210x_ctlmsg(port, 0xff, 0xc0, 0x00c2, 0, &gpio, 1);
++
++ dbg("%s - gpio = 0x%.2x (%d)", __FUNCTION__, gpio, ret);
++
++ *gpio_ret=gpio;
++
++ return (ret == 1) ? 0 : -EPROTO;
++}
++
++static int cp210x_portconfset(struct usb_serial_port *port,
++ struct cp210x_port_config *config)
++{
++ struct cp210x_port_config be_config;
++ int ret;
++
++ dbg("%s", __FUNCTION__);
++
++ memset(&be_config, 0, sizeof(be_config));
++
++ be_config.reset.mode = cpu_to_be16(config->reset.mode);
++ be_config.reset.low_power = 0; // cpu_to_be16(config->reset.low_power);
++ be_config.reset.latch = cpu_to_be16(config->reset.latch);
++
++ be_config.suspend.mode = cpu_to_be16(config->suspend.mode);
++ be_config.suspend.low_power = 0; // cpu_to_be16(config->suspend.low_power);
++ be_config.suspend.latch = cpu_to_be16(config->suspend.latch);
++
++ be_config.enhanced_fxn = config->enhanced_fxn;
++
++
++ ret = cp210x_ctlmsg(port, 0xff, 0x40, 0x370c, 0, &be_config, sizeof(be_config));
++ if (ret == sizeof(be_config))
++ return 0;
++ else if (ret >= 0)
++ return -EPROTO;
++ else
++ return ret;
++}
++
++static int cp210x_portconfget(struct usb_serial_port *port,
++ struct cp210x_port_config *config)
++{
++ int ret;
++
++ dbg("%s", __FUNCTION__);
++
++ ret = cp210x_ctlmsg(port, 0xff, 0xc0, 0x370c, 0, config, sizeof(*config));
++
++ if (ret != sizeof(*config))
++ return (ret >= 0) ? -EPROTO : ret;
++
++ /* Words from cp2103 are MSB */
++
++ config->reset.mode = be16_to_cpu(config->reset.mode);
++ config->reset.low_power = be16_to_cpu(config->reset.low_power);
++ config->reset.latch = be16_to_cpu(config->reset.latch);
++
++ config->suspend.mode = be16_to_cpu(config->suspend.mode);
++ config->suspend.low_power = be16_to_cpu(config->suspend.low_power);
++ config->suspend.latch = be16_to_cpu(config->suspend.latch);
++
++ /* apparently not implemented yet */
++ config->reset.low_power = 0;
++ config->suspend.low_power = 0;
++
++ return 0;
++}
++
++
++
+ /*
+ * cp210x_get_config
+ * Reads from the CP210x configuration registers
+@@ -469,6 +657,163 @@ static void cp210x_close(struct usb_serial_port *port)
+ cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE);
+ }
+
++static int cp210x_string_ioctl(struct usb_serial_port *port, unsigned long arg, int cmd,size_t max_len)
++{
++ uint8_t buf[CP210x_MAX_STRLEN];
++ size_t len;
++
++ if (copy_from_user(buf,(uint8_t *)arg,1))
++ return -EFAULT;
++
++ len=buf[0];
++
++ if (len>max_len)
++ return -EMSGSIZE;
++
++ if (copy_from_user(buf,(uint8_t *)arg,len))
++ return -EFAULT;
++
++ if (len && cp210x_setstr(port, cmd, buf, len) != len)
++ return -EPROTO;
++
++ return 0;
++}
++
++
++static int cp210x_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)
++{
++ struct usb_serial_port *port = tty->driver_data;
++ struct cp210x_port_config config;
++ int iarg;
++ int ret = -ENOIOCTLCMD;
++
++ dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd);
++
++ switch (cmd) {
++ case CPIOC_GPIOGET:
++ /*if (cp210x_get_partnum(port) != CP210x_CP2103_VERSION) break; */
++ ret = cp210x_gpioget(port, &iarg);
++
++ if (ret)
++ break;
++
++ if (copy_to_user((int *)arg, &iarg, sizeof(iarg)))
++ ret = -EFAULT;
++
++ break;
++
++ case CPIOC_GPIOSET:
++ /*if (cp210x_get_partnum(port) != CP210x_CP2103_VERSION) break; */
++
++ if (copy_from_user(&iarg,(int *)arg, sizeof(iarg))) {
++ ret = -EFAULT;
++ break;
++ }
++
++ ret = cp210x_gpioset(port, iarg);
++
++ break;
++
++ case CPIOC_GPIOBIS:
++ /*if (cp210x_get_partnum(port) != CP210x_CP2103_VERSION) break; */
++
++ if (copy_from_user(&iarg, (int *)arg, sizeof(iarg))) {
++ ret = -EFAULT;
++ break;
++ }
++
++ ret = cp210x_gpiosetb(port, iarg, 0);
++
++ break;
++
++ case CPIOC_GPIOBIC:
++ /*if (cp210x_get_partnum(port) != CP210x_CP2103_VERSION) break; */
++
++ if (copy_from_user(&iarg, (int *)arg, sizeof(iarg))) {
++ ret = -EFAULT;
++ break;
++ }
++
++ ret = cp210x_gpiosetb(port, 0, iarg);
++
++ break;
++
++ case CPIOC_DEVICERESET:
++ ret = cp210x_reset(port);
++ break;
++
++ case CPIOC_PORTCONFGET:
++ ret = cp210x_portconfget(port, &config);
++
++ if (ret) break;
++
++ if (copy_to_user((struct cp210x_port_state *)arg, &config, sizeof(config)))
++ ret = -EFAULT;
++
++ break;
++
++ case CPIOC_PORTCONFSET:
++ if (copy_from_user(&config, (struct cp210x_port_state *)arg, sizeof(config))) {
++ ret = -EFAULT;
++ break;
++ }
++
++ ret = cp210x_portconfset(port, &config);
++ break;
++
++ case CPIOC_SETVID:
++ if (copy_from_user(&iarg, (int *)arg,sizeof(iarg))) {
++ ret = -EFAULT;
++ break;
++ }
++
++ ret = cp210x_setu16(port, 0x01, iarg);
++
++ break;
++
++ case CPIOC_SETPID:
++ if (copy_from_user(&iarg, (int *)arg,sizeof(iarg))) {
++ ret = -EFAULT;
++ break;
++ }
++
++ ret = cp210x_setu16(port, 0x02, iarg);
++
++ break;
++
++ case CPIOC_SETMFG:
++ ret = cp210x_string_ioctl(port, arg, 0x0, CP210x_MAX_MFG_STRLEN);
++ break;
++
++ case CPIOC_SETPRODUCT:
++ ret = cp210x_string_ioctl(port, arg, 0x3, CP210x_MAX_PRODUCT_STRLEN);
++
++ break;
++
++ case CPIOC_SETSERIAL:
++ ret = cp210x_string_ioctl(port, arg, 0x3, CP210x_MAX_SERIAL_STRLEN);
++ break;
++
++ case CPIOC_SETDEVVER:
++ if (copy_from_user(&iarg, (int *)arg,sizeof(iarg))) {
++ ret = -EFAULT;
++ break;
++ }
++
++ ret = cp210x_setu16(port, 0x07, iarg);
++
++ break;
++ default:
++ dbg("%s not supported = 0x%04x", __FUNCTION__, cmd);
++ break;
++ }
++
++ return ret;
++}
++
++
++
++
+ /*
+ * cp210x_get_termios
+ * Reads the baud rate, data bits, parity, stop bits and flow control mode
+diff --git a/include/linux/cp210x.h b/include/linux/cp210x.h
+new file mode 100644
+index 0000000..39faf96
+--- /dev/null
++++ b/include/linux/cp210x.h
+@@ -0,0 +1,100 @@
++/*
++ *
++ */
++#ifndef _CPIO210X_H
++#define _CPIO210X_H
++
++#define CP210X_IOCTL_BASE 'C'
++
++//struct watchdog_info {
++// __u32 options; /* Options the card/driver supports */
++// __u32 firmware_version; /* Firmware version of the card */
++// __u8 identity[32]; /* Identity of the board */
++//};
++
++struct cp210x_port_state {
++ uint16_t mode; /* push-pull = 1, open-drain = 0 */
++ uint16_t low_power; /* 1 = ground the pin, and disable */
++ uint16_t latch;
++} __attribute__((packed));
++
++/* LOPWR MODE LATCH */
++/* 0 0 0 Pin drivers are totem pole, and inital config sinks current to GND */
++/* 0 0 1 Pin drivers are totem pole, and inital config sources current from VIO */
++/* 0 1 0 Pin drivers are open drain, and inital config sinks current to GND */
++/* 0 1 1 Pin drivers are open drain, and inital config leaves pin HI-Z (you want this for inputs) */
++/* 1 X X Pin drivers are disabled, and pin sinks current to GND */
++
++
++struct cp210x_port_config {
++ struct cp210x_port_state reset;
++ struct cp210x_port_state suspend;
++ uint8_t enhanced_fxn;
++} __attribute__((packed));
++
++
++#define CP_PIN_RI (1 << 0)
++#define CP_PIN_DCD (1 << 1)
++#define CP_PIN_DTR (1 << 2)
++#define CP_PIN_DSR (1 << 3)
++#define CP_PIN_TXD (1 << 4)
++#define CP_PIN_RXD (1 << 5)
++#define CP_PIN_RTS (1 << 6)
++#define CP_PIN_CTS (1 << 7)
++#define CP_PIN_GPIO_0 (1 << 8)
++#define CP_PIN_GPIO_1 (1 << 9)
++#define CP_PIN_GPIO_2 (1 << 10)
++#define CP_PIN_GPIO_3 (1 << 11)
++#define CP_PIN_UNUSED_1 (1 << 12)
++#define CP_PIN_UNUSED_2 (1 << 13)
++#define CP_PIN_GPIO_SUSPEND (1 << 14)
++#define CP_PIN_GPIO_NSUSPEND (1 << 15)
++
++#define CP_INPUT_PINS (CP_PIN_RXD|CP_PIN_CTS|CP_PIN_DSR|CP_PIN_RI|CP_PIN_DCD)
++
++
++#define CP_EFXN_GPIO_0_IS_TXLED (1 << 0)
++#define CP_EFXN_GPIO_1_IS_RXLED (1 << 1)
++#define CP_EFXN_GPIO_2_IS_RS485_TX (1 << 2)
++#define CP_EFXN_UNUSED_1 (1 << 3) /* Set to zero */
++#define CP_EFXN_ENABLE_WPU (1 << 4)
++#define CP_EFXN_UNUSED_2 (1 << 5) /* Set to zero */
++#define CP_EFXN_SERIAL_AUTOOFF (1 << 6)
++#define CP_EFXN_GPIOL_AUTOOFF (1 << 7)
++
++
++
++
++
++
++#define CPIOC_GPIOGET _IOR(CP210X_IOCTL_BASE, 0, int)
++#define CPIOC_GPIOSET _IOW(CP210X_IOCTL_BASE, 1, int)
++#define CPIOC_GPIOBIC _IOW(CP210X_IOCTL_BASE, 2, int)
++#define CPIOC_GPIOBIS _IOW(CP210X_IOCTL_BASE, 3, int)
++
++#define CPIOC_DEVICERESET _IO(CP210X_IOCTL_BASE,4)
++#define CPIOC_PORTCONFGET _IOR(CP210X_IOCTL_BASE, 5, struct cp210x_port_config)
++#define CPIOC_PORTCONFSET _IOW(CP210X_IOCTL_BASE, 6, struct cp210x_port_config)
++
++#define CPIOC_SETVID _IOW(CP210X_IOCTL_BASE,7, int)
++#define CPIOC_SETPID _IOW(CP210X_IOCTL_BASE,8, int)
++#define CPIOC_SETMFG _IOW(CP210X_IOCTL_BASE,9, char *)
++#define CPIOC_SETPRODUCT _IOW(CP210X_IOCTL_BASE,10, char *)
++#define CPIOC_SETSERIAL _IOW(CP210X_IOCTL_BASE,11, char *)
++#define CPIOC_SETDEVVER _IOW(CP210X_IOCTL_BASE,12, int)
++
++/* CP2103 GPIO */
++#define CP_GPIO_0 0x01
++#define CP_GPIO_1 0x02
++#define CP_GPIO_2 0x04
++#define CP_GPIO_3 0x08
++#define CP_GPIO_MASK (CP_GPIO_0|CP_GPIO_1|CP_GPIO_2|CP_GPIO_3)
++
++
++#define CP210x_MAX_MFG_STRLEN 128
++#define CP210x_MAX_PRODUCT_STRLEN 126
++#define CP210x_MAX_SERIAL_STRLEN 63
++#define CP210x_MAX_MAXPOWER 250
++
++#endif /* _CPIO210X_H */
++
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