diff options
Diffstat (limited to 'drivers/media/video/tm6000/tm6000-i2c.c')
| -rw-r--r-- | drivers/media/video/tm6000/tm6000-i2c.c | 334 |
1 files changed, 0 insertions, 334 deletions
diff --git a/drivers/media/video/tm6000/tm6000-i2c.c b/drivers/media/video/tm6000/tm6000-i2c.c deleted file mode 100644 index c7e23e3dd75e..000000000000 --- a/drivers/media/video/tm6000/tm6000-i2c.c +++ /dev/null @@ -1,334 +0,0 @@ -/* - * tm6000-i2c.c - driver for TM5600/TM6000/TM6010 USB video capture devices - * - * Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org> - * - * Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com> - * - Fix SMBus Read Byte command - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation version 2 - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/usb.h> -#include <linux/i2c.h> - -#include "tm6000.h" -#include "tm6000-regs.h" -#include <media/v4l2-common.h> -#include <media/tuner.h> -#include "tuner-xc2028.h" - - -/* ----------------------------------------------------------- */ - -static unsigned int i2c_debug; -module_param(i2c_debug, int, 0644); -MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]"); - -#define i2c_dprintk(lvl, fmt, args...) if (i2c_debug >= lvl) do { \ - printk(KERN_DEBUG "%s at %s: " fmt, \ - dev->name, __func__, ##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 i2c_packet_limit = 16; - - if (dev->dev_type == TM6010) - i2c_packet_limit = 80; - - 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; - } - - /* release mutex */ - return rc; -} - -/* 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) -{ - int rc; - u8 b[2]; - 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 */ - 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); - } - - /* 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; - } - - 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; -} - -static int tm6000_i2c_xfer(struct i2c_adapter *i2c_adap, - struct i2c_msg msgs[], int num) -{ - struct tm6000_core *dev = i2c_adap->algo_data; - int addr, rc, i, byte; - - if (num <= 0) - return 0; - for (i = 0; i < num; i++) { - 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].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(KERN_CONT " %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); - } - - i++; - - 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); - } - if (i2c_debug >= 2) - for (byte = 0; byte < msgs[i].len; byte++) - printk(KERN_CONT " %02x", msgs[i].buf[byte]); - } else { - /* write bytes */ - if (i2c_debug >= 2) - for (byte = 0; byte < msgs[i].len; byte++) - printk(KERN_CONT " %02x", msgs[i].buf[byte]); - rc = tm6000_i2c_send_regs(dev, addr, msgs[i].buf[0], - msgs[i].buf + 1, msgs[i].len - 1); - } - if (i2c_debug >= 2) - printk(KERN_CONT "\n"); - if (rc < 0) - goto err; - } - - return num; -err: - i2c_dprintk(2, " ERROR: %i\n", rc); - return rc; -} - -static int tm6000_i2c_eeprom(struct tm6000_core *dev) -{ - int i, rc; - unsigned char *p = dev->eedata; - unsigned char bytes[17]; - - dev->i2c_client.addr = 0xa0 >> 1; - dev->eedata_size = 0; - - bytes[16] = '\0'; - for (i = 0; i < sizeof(dev->eedata); ) { - *p = i; - rc = tm6000_i2c_recv_regs(dev, 0xa0, i, p, 1); - if (rc < 1) { - if (p == dev->eedata) - goto noeeprom; - else { - printk(KERN_WARNING - "%s: i2c eeprom read error (err=%d)\n", - dev->name, rc); - } - return -EINVAL; - } - dev->eedata_size++; - p++; - if (0 == (i % 16)) - printk(KERN_INFO "%s: i2c eeprom %02x:", dev->name, i); - printk(KERN_CONT " %02x", dev->eedata[i]); - if ((dev->eedata[i] >= ' ') && (dev->eedata[i] <= 'z')) - bytes[i%16] = dev->eedata[i]; - else - bytes[i%16] = '.'; - - i++; - - if (0 == (i % 16)) { - bytes[16] = '\0'; - printk(KERN_CONT " %s\n", bytes); - } - } - if (0 != (i%16)) { - bytes[i%16] = '\0'; - for (i %= 16; i < 16; i++) - printk(KERN_CONT " "); - printk(KERN_CONT " %s\n", bytes); - } - - return 0; - -noeeprom: - printk(KERN_INFO "%s: Huh, no eeprom present (err=%d)?\n", - dev->name, rc); - return -EINVAL; -} - -/* ----------------------------------------------------------- */ - -/* - * functionality() - */ -static u32 functionality(struct i2c_adapter *adap) -{ - return I2C_FUNC_SMBUS_EMUL; -} - -static const struct i2c_algorithm tm6000_algo = { - .master_xfer = tm6000_i2c_xfer, - .functionality = functionality, -}; - -/* ----------------------------------------------------------- */ - -/* - * tm6000_i2c_register() - * register i2c bus - */ -int tm6000_i2c_register(struct tm6000_core *dev) -{ - int rc; - - dev->i2c_adap.owner = THIS_MODULE; - dev->i2c_adap.algo = &tm6000_algo; - dev->i2c_adap.dev.parent = &dev->udev->dev; - strlcpy(dev->i2c_adap.name, dev->name, sizeof(dev->i2c_adap.name)); - dev->i2c_adap.algo_data = dev; - i2c_set_adapdata(&dev->i2c_adap, &dev->v4l2_dev); - rc = i2c_add_adapter(&dev->i2c_adap); - if (rc) - return rc; - - dev->i2c_client.adapter = &dev->i2c_adap; - strlcpy(dev->i2c_client.name, "tm6000 internal", I2C_NAME_SIZE); - tm6000_i2c_eeprom(dev); - - return 0; -} - -/* - * tm6000_i2c_unregister() - * unregister i2c_bus - */ -int tm6000_i2c_unregister(struct tm6000_core *dev) -{ - i2c_del_adapter(&dev->i2c_adap); - return 0; -} |