/*
- tm6000-i2c.c - driver for TM5600/TM6000 USB video capture devices
+ tm6000-i2c.c - driver for TM5600/TM6000/TM6010 USB video capture devices
Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org>
#define I2C_HW_B_TM6000 I2C_HW_B_EM28XX
/* ----------------------------------------------------------- */
-static unsigned int i2c_scan = 0;
-module_param(i2c_scan, int, 0444);
-MODULE_PARM_DESC(i2c_scan, "scan i2c bus at insmod time");
-
static unsigned int i2c_debug = 0;
module_param(i2c_debug, int, 0644);
MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
printk(KERN_DEBUG "%s at %s: " fmt, \
dev->name, __FUNCTION__ , ##args); } while (0)
+static int tm6000_i2c_send_regs(struct tm6000_core *dev, unsigned char addr,
+ __u8 reg, char *buf, int len)
+{
+ int rc;
+ unsigned int tsleep;
+ unsigned int i2c_packet_limit = 16;
+
+ if (dev->dev_type == TM6010)
+ i2c_packet_limit = 64;
+
+ if (!buf)
+ return -1;
+
+ if (len < 1 || len > i2c_packet_limit) {
+ printk(KERN_ERR "Incorrect length of i2c packet = %d, limit set to %d\n",
+ len, i2c_packet_limit);
+ return -1;
+ }
+
+ /* capture mutex */
+ rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE, REQ_16_SET_GET_I2C_WR1_RDN,
+ addr | reg << 8, 0, buf, len);
+
+ if (rc < 0) {
+ /* release mutex */
+ return rc;
+ }
+
+ /* Calculate delay time, 14000us for 64 bytes */
+ tsleep = ((len * 200) + 200 + 1000) / 1000;
+ msleep(tsleep);
+
+ /* release mutex */
+ return rc;
+}
-/* Returns 0 if address is found */
-static int tm6000_i2c_scan(struct i2c_adapter *i2c_adap, int addr)
+/* Generic read - doesn't work fine with 16bit registers */
+static int tm6000_i2c_recv_regs(struct tm6000_core *dev, unsigned char addr,
+ __u8 reg, char *buf, int len)
{
- struct tm6000_core *dev = i2c_adap->algo_data;
+ int rc;
+ u8 b[2];
+ unsigned int i2c_packet_limit = 16;
-#if 1
- /* HACK: i2c scan is not working yet */
- if (
- (dev->caps.has_tuner && (addr==dev->tuner_addr)) ||
- (dev->caps.has_tda9874 && (addr==0xb0)) ||
- (dev->caps.has_eeprom && (addr==0xa0))
- ) {
- printk("Hack: enabling device at addr 0x%02x\n",addr);
- return (1);
- } else {
- return -ENODEV;
+ if (dev->dev_type == TM6010)
+ i2c_packet_limit = 64;
+
+ if (!buf)
+ return -1;
+
+ if (len < 1 || len > i2c_packet_limit) {
+ printk(KERN_ERR "Incorrect length of i2c packet = %d, limit set to %d\n",
+ len, i2c_packet_limit);
+ return -1;
}
-#else
- int rc=-ENODEV;
- char buf[1];
-
- /* This sends addr + 1 byte with 0 */
- rc = tm6000_read_write_usb (dev,
- USB_DIR_IN | USB_TYPE_VENDOR,
- REQ_16_SET_GET_I2CSEQ,
- addr, 0,
- buf, 0);
- msleep(10);
-
- if (rc<0) {
- if (i2c_debug>=2)
- printk("no device at addr 0x%02x\n",addr);
+
+ /* capture mutex */
+ if ((dev->caps.has_zl10353) && (dev->demod_addr << 1 == addr) && (reg % 2 == 0)) {
+ /*
+ * Workaround an I2C bug when reading from zl10353
+ */
+ reg -= 1;
+ len += 1;
+
+ rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, b, len);
+
+ *buf = b[1];
+ } else {
+ rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, buf, len);
}
- printk("Hack: check on addr 0x%02x returned %d\n",addr,rc);
+ /* release mutex */
+ return rc;
+}
+/*
+ * read from a 16bit register
+ * for example xc2028, xc3028 or xc3028L
+ */
+static int tm6000_i2c_recv_regs16(struct tm6000_core *dev, unsigned char addr,
+ __u16 reg, char *buf, int len)
+{
+ int rc;
+ unsigned char ureg;
+
+ if (!buf || len != 2)
+ return -1;
+
+ /* capture mutex */
+ if (dev->dev_type == TM6010) {
+ ureg = reg & 0xFF;
+ rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE, REQ_16_SET_GET_I2C_WR1_RDN,
+ addr | (reg & 0xFF00), 0, &ureg, 1);
+
+ if (rc < 0) {
+ /* release mutex */
+ return rc;
+ }
+
+ msleep(1400 / 1000);
+ rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE, REQ_35_AFTEK_TUNER_READ,
+ reg, 0, buf, len);
+ } else {
+ rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE, REQ_14_SET_GET_I2C_WR2_RDN,
+ addr, reg, buf, len);
+ }
+
+ /* release mutex */
return rc;
-#endif
}
static int tm6000_i2c_xfer(struct i2c_adapter *i2c_adap,
{
struct tm6000_core *dev = i2c_adap->algo_data;
int addr, rc, i, byte;
- int prev_reg = -1;
if (num <= 0)
return 0;
for (i = 0; i < num; i++) {
- addr = (msgs[i].addr << 1) &0xff;
+ addr = (msgs[i].addr << 1) & 0xff;
i2c_dprintk(2,"%s %s addr=0x%x len=%d:",
(msgs[i].flags & I2C_M_RD) ? "read" : "write",
i == num - 1 ? "stop" : "nonstop", addr, msgs[i].len);
- if (!msgs[i].len) {
- /* Do I2C scan */
- rc=tm6000_i2c_scan(i2c_adap, addr);
- } else if (msgs[i].flags & I2C_M_RD) {
- /* Read bytes */
- /* I2C is assumed to have always a subaddr at the first byte of the
- message bus. Also, the first i2c value of the answer is returned
- out of message data.
- */
- /* SMBus Read Byte command */
- if (prev_reg < 0)
- printk("XXX read from unknown prev_reg\n");
- rc = tm6000_read_write_usb (dev,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- REQ_16_SET_GET_I2CSEQ,
- addr | (prev_reg << 8), 0,
- msgs[i].buf, msgs[i].len);
- if (prev_reg >= 0)
- prev_reg += msgs[i].len;
- if (i2c_debug>=2) {
- for (byte = 0; byte < msgs[i].len; byte++) {
+ if (msgs[i].flags & I2C_M_RD) {
+ /* read request without preceding register selection */
+ /*
+ * The TM6000 only supports a read transaction
+ * immediately after a 1 or 2 byte write to select
+ * a register. We cannot fulfil this request.
+ */
+ i2c_dprintk(2, " read without preceding write not"
+ " supported");
+ rc = -EOPNOTSUPP;
+ goto err;
+ } else if (i + 1 < num && msgs[i].len <= 2 &&
+ (msgs[i + 1].flags & I2C_M_RD) &&
+ msgs[i].addr == msgs[i + 1].addr) {
+ /* 1 or 2 byte write followed by a read */
+ if (i2c_debug >= 2)
+ for (byte = 0; byte < msgs[i].len; byte++)
printk(" %02x", msgs[i].buf[byte]);
- }
+ i2c_dprintk(2, "; joined to read %s len=%d:",
+ i == num - 2 ? "stop" : "nonstop",
+ msgs[i + 1].len);
+
+ if (msgs[i].len == 2) {
+ rc = tm6000_i2c_recv_regs16(dev, addr,
+ msgs[i].buf[0] << 8 | msgs[i].buf[1],
+ msgs[i + 1].buf, msgs[i + 1].len);
+ } else {
+ rc = tm6000_i2c_recv_regs(dev, addr, msgs[i].buf[0],
+ msgs[i + 1].buf, msgs[i + 1].len);
}
- } else if (i+1 < num && msgs[i].len == 2 &&
- (msgs[i+1].flags & I2C_M_RD) &&
- msgs[i].addr == msgs[i+1].addr) {
- i2c_dprintk(2, "msg %d: write 2, read %d", i,
- msgs[i+1].len);
- /* Write 2 Read N command */
- rc = tm6000_read_write_usb (dev,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- REQ_14_SET_GET_EEPROM_PAGE, /* XXX wrong name */
- addr | msgs[i].buf[0] << 8, msgs[i].buf[1],
- msgs[i+1].buf, msgs[i+1].len);
+
i++;
- if (i2c_debug>=2) {
- for (byte = 0; byte < msgs[i].len; byte++) {
- printk(" %02x", msgs[i].buf[byte]);
- }
+
+ if (addr == dev->tuner_addr << 1) {
+ tm6000_set_reg(dev, REQ_50_SET_START, 0, 0);
+ tm6000_set_reg(dev, REQ_51_SET_STOP, 0, 0);
}
- prev_reg = -1;
+ if (i2c_debug >= 2)
+ for (byte = 0; byte < msgs[i].len; byte++)
+ printk(" %02x", msgs[i].buf[byte]);
} else {
/* write bytes */
- if (i2c_debug>=2) {
+ if (i2c_debug >= 2)
for (byte = 0; byte < msgs[i].len; byte++)
printk(" %02x", msgs[i].buf[byte]);
- }
+ rc = tm6000_i2c_send_regs(dev, addr, msgs[i].buf[0],
+ msgs[i].buf + 1, msgs[i].len - 1);
- /* SMBus Write Byte command followed by a read command */
- if(msgs[i].len == 1 && i+1 < num && msgs[i+1].flags & I2C_M_RD
- && msgs[i+1].addr == msgs[i].addr) {
- prev_reg = msgs[i].buf[0];
- if (i2c_debug >= 2)
- printk("\n");
- continue;
+ if (addr == dev->tuner_addr << 1) {
+ tm6000_set_reg(dev, REQ_50_SET_START, 0, 0);
+ tm6000_set_reg(dev, REQ_51_SET_STOP, 0, 0);
}
-
- rc = tm6000_read_write_usb (dev,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- REQ_16_SET_GET_I2CSEQ,
- addr|(*msgs[i].buf)<<8, 0,
- msgs[i].buf+1, msgs[i].len-1);
-
- prev_reg = -1;
}
- if (i2c_debug>=2)
+ if (i2c_debug >= 2)
printk("\n");
if (rc < 0)
goto err;
return rc;
}
-
static int tm6000_i2c_eeprom(struct tm6000_core *dev,
unsigned char *eedata, int len)
{
bytes[16] = '\0';
for (i = 0; i < len; ) {
*p = i;
- rc = tm6000_read_write_usb (dev,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- REQ_16_SET_GET_I2CSEQ, 0xa0 | i<<8, 0, p, 1);
+ rc = tm6000_i2c_recv_regs(dev, 0xa0, i, p, 1);
if (rc < 1) {
if (p == eedata)
goto noeeprom;
/* ----------------------------------------------------------- */
/*
- * algo_control()
- */
-static int algo_control(struct i2c_adapter *adapter,
- unsigned int cmd, unsigned long arg)
-{
- return 0;
-}
-
-/*
* functionality()
*/
static u32 functionality(struct i2c_adapter *adap)
return I2C_FUNC_SMBUS_EMUL;
}
-#ifndef I2C_PEC
-static void inc_use(struct i2c_adapter *adap)
-{
- MOD_INC_USE_COUNT;
-}
-
-static void dec_use(struct i2c_adapter *adap)
-{
- MOD_DEC_USE_COUNT;
-}
-#endif
-
#define mass_write(addr, reg, data...) \
{ const static u8 _val[] = data; \
rc=tm6000_read_write_usb(dev,USB_DIR_OUT | USB_TYPE_VENDOR, \
- REQ_16_SET_GET_I2CSEQ,(reg<<8)+addr, 0x00, (u8 *) _val, \
+ REQ_16_SET_GET_I2C_WR1_RDN,(reg<<8)+addr, 0x00, (u8 *) _val, \
ARRAY_SIZE(_val)); \
if (rc<0) { \
printk(KERN_ERR "Error on line %d: %d\n",__LINE__,rc); \
msleep (10); \
}
-/* Tuner callback to provide the proper gpio changes needed for xc2028 */
-
-static int tm6000_tuner_callback(void *ptr, int command, int arg)
-{
- int rc=0;
- struct tm6000_core *dev = ptr;
-
- if (dev->tuner_type!=TUNER_XC2028)
- return 0;
-
- switch (command) {
- case XC2028_RESET_CLK:
- tm6000_set_reg (dev, REQ_04_EN_DISABLE_MCU_INT,
- 0x02, arg);
- msleep(10);
- rc=tm6000_set_reg (dev, REQ_03_SET_GET_MCU_PIN,
- TM6000_GPIO_CLK, 0);
- if (rc<0)
- return rc;
- msleep(10);
- rc=tm6000_set_reg (dev, REQ_03_SET_GET_MCU_PIN,
- TM6000_GPIO_CLK, 1);
- break;
- case XC2028_TUNER_RESET:
- /* Reset codes during load firmware */
- switch (arg) {
- case 0:
- tm6000_set_reg (dev, REQ_03_SET_GET_MCU_PIN,
- dev->tuner_reset_gpio, 0x00);
- msleep(130);
- tm6000_set_reg (dev, REQ_03_SET_GET_MCU_PIN,
- dev->tuner_reset_gpio, 0x01);
- msleep(130);
- break;
- case 1:
- tm6000_set_reg (dev, REQ_04_EN_DISABLE_MCU_INT,
- 0x02, 0x01);
- msleep(10);
- break;
-
- case 2:
- rc=tm6000_set_reg (dev, REQ_03_SET_GET_MCU_PIN,
- TM6000_GPIO_CLK, 0);
- if (rc<0)
- return rc;
- msleep(100);
- rc=tm6000_set_reg (dev, REQ_03_SET_GET_MCU_PIN,
- TM6000_GPIO_CLK, 1);
- msleep(100);
- break;
- }
- }
- return (rc);
-}
-
-static int attach_inform(struct i2c_client *client)
-{
- struct tm6000_core *dev = client->adapter->algo_data;
- struct tuner_setup tun_setup;
-
- i2c_dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n",
- client->driver->driver.name, client->addr, client->name);
-
- switch (client->addr<<1) {
- case 0xb0:
- request_module("tvaudio");
- return 0;
- }
-
- /* If tuner, initialize the tuner part */
- if ( dev->tuner_addr != client->addr<<1 ) {
- return 0;
- }
-
- memset (&tun_setup, 0, sizeof(tun_setup));
-
- tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
- tun_setup.type = dev->tuner_type;
- tun_setup.addr = dev->tuner_addr>>1;
- tun_setup.tuner_callback = tm6000_tuner_callback;
-
- client->driver->command (client,TUNER_SET_TYPE_ADDR, &tun_setup);
-
- return 0;
-}
-
static struct i2c_algorithm tm6000_algo = {
.master_xfer = tm6000_i2c_xfer,
- .algo_control = algo_control,
.functionality = functionality,
};
static struct i2c_adapter tm6000_adap_template = {
-#ifdef I2C_PEC
.owner = THIS_MODULE,
-#else
- .inc_use = inc_use,
- .dec_use = dec_use,
-#endif
- .class = I2C_CLASS_TV_ANALOG,
+ .class = I2C_CLASS_TV_ANALOG | I2C_CLASS_TV_DIGITAL,
.name = "tm6000",
.id = I2C_HW_B_TM6000,
.algo = &tm6000_algo,
- .client_register = attach_inform,
};
static struct i2c_client tm6000_client_template = {
/* ----------------------------------------------------------- */
/*
- * i2c_devs
- * incomplete list of known devices
- */
-static char *i2c_devs[128] = {
- [0xc2 >> 1] = "tuner (analog)",
-};
-
-/*
- * do_i2c_scan()
- * check i2c address range for devices
- */
-static void do_i2c_scan(char *name, struct i2c_client *c)
-{
- unsigned char buf;
- int i, rc;
-
- for (i = 0; i < 128; i++) {
- c->addr = i;
- rc = i2c_master_recv(c, &buf, 0);
- if (rc < 0)
- continue;
- printk(KERN_INFO "%s: found i2c device @ 0x%x [%s]\n", name,
- i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
- }
-}
-
-/*
- * tm6000_i2c_call_clients()
- * send commands to all attached i2c devices
- */
-void tm6000_i2c_call_clients(struct tm6000_core *dev, unsigned int cmd, void *arg)
-{
- BUG_ON(NULL == dev->i2c_adap.algo_data);
- i2c_clients_command(&dev->i2c_adap, cmd, arg);
-}
-
-/*
* tm6000_i2c_register()
* register i2c bus
*/
dev->i2c_client = tm6000_client_template;
dev->i2c_client.adapter = &dev->i2c_adap;
- if (i2c_scan)
- do_i2c_scan(dev->name, &dev->i2c_client);
+ i2c_set_adapdata(&dev->i2c_adap, &dev->v4l2_dev);
tm6000_i2c_eeprom(dev, eedata, sizeof(eedata));
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff