Hi
Rework I2C for read word from connected devices, now it works well.
Add new functions for read/write blocks.
diff -r 7c0b887911cf linux/drivers/staging/tm6000/tm6000-i2c.c
--- a/linux/drivers/staging/tm6000/tm6000-i2c.c Mon Apr 05 22:56:43 2010 -0400
+++ b/linux/drivers/staging/tm6000/tm6000-i2c.c Fri Apr 23 04:23:03 2010 +1000
@@ -24,6 +24,7 @@
#include <linux/kernel.h>
#include <linux/usb.h>
#include <linux/i2c.h>
+#include <linux/delay.h>
#include "compat.h"
#include "tm6000.h"
@@ -45,11 +46,39 @@
printk(KERN_DEBUG "%s at %s: " fmt, \
dev->name, __FUNCTION__ , ##args); } while (0)
+static void tm6000_i2c_reset(struct tm6000_core *dev)
+{
+ tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN, TM6000_GPIO_CLK, 0);
+ msleep(15);
+ tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN, TM6000_GPIO_CLK, 1);
+ msleep(15);
+}
+
static int tm6000_i2c_send_regs(struct tm6000_core *dev, unsigned char addr,
__u8 reg, char *buf, int len)
{
- return 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);
+ int rc;
+ unsigned int tsleep;
+
+ if (!buf || len < 1 || len > 64)
+ 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;
}
/* Generic read - doesn't work fine with 16bit registers */
@@ -59,22 +88,30 @@
int rc;
u8 b[2];
- if ((dev->caps.has_zl10353) && (dev->demod_addr << 1 == addr) && (reg % 2 == 0)) {
+ if (!buf || len < 1 || len > 64)
+ return -1;
+
+ /* 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);
+ 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);
+ 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);
}
+ /* release mutex */
return rc;
}
@@ -85,8 +122,106 @@
static int tm6000_i2c_recv_regs16(struct tm6000_core *dev, unsigned char addr,
__u16 reg, char *buf, int len)
{
- return 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);
+ int rc;
+ unsigned char ureg;
+
+ if (!buf || len != 2)
+ return -1;
+
+ /* capture mutex */
+ 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);
+
+ if (rc < 0) {
+ /* release mutex */
+ return rc;
+ }
+
+ /* release mutex */
+ return rc;
+}
+
+static int tm6000_i2c_read_sequence(struct tm6000_core *dev, unsigned char addr,
+ __u16 reg, char *buf, int len)
+{
+ int rc;
+
+ if (!buf || len < 1 || len > 64)
+ return -1;
+
+ /* capture mutex */
+ rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE, REQ_35_AFTEK_TUNER_READ,
+ reg, 0, buf, len);
+ /* release mutex */
+ return rc;
+}
+
+static int tm6000_i2c_write_sequence(struct tm6000_core *dev,
+ unsigned char addr, __u16 reg, char *buf,
+ int len)
+{
+ int rc;
+ unsigned int tsleep;
+
+ if (!buf || len < 1 || len > 64)
+ 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+1, len-1);
+
+ if (rc < 0) {
+ /* release mutex */
+ return rc;
+ }
+
+ /* Calculate delay time, 13800us for 64 bytes */
+ tsleep = ((len * 200) + 1000) / 1000;
+ msleep(tsleep);
+
+ /* release mutex */
+ return rc;
+}
+
+static int tm6000_i2c_write_uni(struct tm6000_core *dev, unsigned char addr,
+ __u16 reg, char *buf, int len)
+{
+ int rc;
+ unsigned int tsleep;
+
+ if (!buf || len < 1 || len > 64)
+ return -1;
+
+ /* capture mutex */
+ rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE, REQ_30_I2C_WRITE,
+ addr | reg << 8, 0, buf+1, len-1);
+
+ if (rc < 0) {
+ /* release mutex */
+ return rc;
+ }
+
+ /* Calculate delay time, 14800us for 64 bytes */
+ tsleep = ((len * 200) + 1000 + 1000) / 1000;
+ msleep(tsleep);
+
+ /* release mutex */
+ return rc;
}
static int tm6000_i2c_xfer(struct i2c_adapter *i2c_adap,
Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@xxxxxxxxx>
With my best regards, Dmitry.diff -r 7c0b887911cf linux/drivers/staging/tm6000/tm6000-i2c.c
--- a/linux/drivers/staging/tm6000/tm6000-i2c.c Mon Apr 05 22:56:43 2010 -0400
+++ b/linux/drivers/staging/tm6000/tm6000-i2c.c Fri Apr 23 04:23:03 2010 +1000
@@ -24,6 +24,7 @@
#include <linux/kernel.h>
#include <linux/usb.h>
#include <linux/i2c.h>
+#include <linux/delay.h>
#include "compat.h"
#include "tm6000.h"
@@ -45,11 +46,39 @@
printk(KERN_DEBUG "%s at %s: " fmt, \
dev->name, __FUNCTION__ , ##args); } while (0)
+static void tm6000_i2c_reset(struct tm6000_core *dev)
+{
+ tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN, TM6000_GPIO_CLK, 0);
+ msleep(15);
+ tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN, TM6000_GPIO_CLK, 1);
+ msleep(15);
+}
+
static int tm6000_i2c_send_regs(struct tm6000_core *dev, unsigned char addr,
__u8 reg, char *buf, int len)
{
- return 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);
+ int rc;
+ unsigned int tsleep;
+
+ if (!buf || len < 1 || len > 64)
+ 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;
}
/* Generic read - doesn't work fine with 16bit registers */
@@ -59,22 +88,30 @@
int rc;
u8 b[2];
- if ((dev->caps.has_zl10353) && (dev->demod_addr << 1 == addr) && (reg % 2 == 0)) {
+ if (!buf || len < 1 || len > 64)
+ return -1;
+
+ /* 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);
+ 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);
+ 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);
}
+ /* release mutex */
return rc;
}
@@ -85,8 +122,106 @@
static int tm6000_i2c_recv_regs16(struct tm6000_core *dev, unsigned char addr,
__u16 reg, char *buf, int len)
{
- return 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);
+ int rc;
+ unsigned char ureg;
+
+ if (!buf || len != 2)
+ return -1;
+
+ /* capture mutex */
+ 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);
+
+ if (rc < 0) {
+ /* release mutex */
+ return rc;
+ }
+
+ /* release mutex */
+ return rc;
+}
+
+static int tm6000_i2c_read_sequence(struct tm6000_core *dev, unsigned char addr,
+ __u16 reg, char *buf, int len)
+{
+ int rc;
+
+ if (!buf || len < 1 || len > 64)
+ return -1;
+
+ /* capture mutex */
+ rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE, REQ_35_AFTEK_TUNER_READ,
+ reg, 0, buf, len);
+ /* release mutex */
+ return rc;
+}
+
+static int tm6000_i2c_write_sequence(struct tm6000_core *dev,
+ unsigned char addr, __u16 reg, char *buf,
+ int len)
+{
+ int rc;
+ unsigned int tsleep;
+
+ if (!buf || len < 1 || len > 64)
+ 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+1, len-1);
+
+ if (rc < 0) {
+ /* release mutex */
+ return rc;
+ }
+
+ /* Calculate delay time, 13800us for 64 bytes */
+ tsleep = ((len * 200) + 1000) / 1000;
+ msleep(tsleep);
+
+ /* release mutex */
+ return rc;
+}
+
+static int tm6000_i2c_write_uni(struct tm6000_core *dev, unsigned char addr,
+ __u16 reg, char *buf, int len)
+{
+ int rc;
+ unsigned int tsleep;
+
+ if (!buf || len < 1 || len > 64)
+ return -1;
+
+ /* capture mutex */
+ rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE, REQ_30_I2C_WRITE,
+ addr | reg << 8, 0, buf+1, len-1);
+
+ if (rc < 0) {
+ /* release mutex */
+ return rc;
+ }
+
+ /* Calculate delay time, 14800us for 64 bytes */
+ tsleep = ((len * 200) + 1000 + 1000) / 1000;
+ msleep(tsleep);
+
+ /* release mutex */
+ return rc;
}
static int tm6000_i2c_xfer(struct i2c_adapter *i2c_adap,
Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@xxxxxxxxx>
