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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-08-14 07:13:22 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-15 23:25:07 +0400
commit0c0d06cac63ee327ceaab4b5ffe2206574ab86bd (patch)
treee759f0dc3185d97f2a0c6b5cd5e32ea6faa74d40 /drivers/media/video/usbvision/usbvision-i2c.c
parent84cfe9e79bd5ac11c963f4841158454fefa872f6 (diff)
downloadlinux-0c0d06cac63ee327ceaab4b5ffe2206574ab86bd.tar.xz
[media] rename most media/video usb drivers to media/usb
Rename all USB drivers with their own directory under drivers/media/video into drivers/media/usb and update the building system. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/usbvision/usbvision-i2c.c')
-rw-r--r--drivers/media/video/usbvision/usbvision-i2c.c456
1 files changed, 0 insertions, 456 deletions
diff --git a/drivers/media/video/usbvision/usbvision-i2c.c b/drivers/media/video/usbvision/usbvision-i2c.c
deleted file mode 100644
index 89fec029e924..000000000000
--- a/drivers/media/video/usbvision/usbvision-i2c.c
+++ /dev/null
@@ -1,456 +0,0 @@
-/*
- * usbvision_i2c.c
- * i2c algorithm for USB-I2C Bridges
- *
- * Copyright (c) 1999-2007 Joerg Heckenbach <joerg@heckenbach-aw.de>
- * Dwaine Garden <dwainegarden@rogers.com>
- *
- * This module is part of usbvision driver project.
- * Updates to driver completed by Dwaine P. Garden
- *
- * 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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/kernel.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/uaccess.h>
-#include <linux/ioport.h>
-#include <linux/errno.h>
-#include <linux/usb.h>
-#include <linux/i2c.h>
-#include "usbvision.h"
-
-#define DBG_I2C (1 << 0)
-
-static int i2c_debug;
-
-module_param(i2c_debug, int, 0644); /* debug_i2c_usb mode of the device driver */
-MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
-
-#define PDEBUG(level, fmt, args...) { \
- if (i2c_debug & (level)) \
- printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
- __func__, __LINE__ , ## args); \
- }
-
-static int usbvision_i2c_write(struct usb_usbvision *usbvision, unsigned char addr, char *buf,
- short len);
-static int usbvision_i2c_read(struct usb_usbvision *usbvision, unsigned char addr, char *buf,
- short len);
-
-static inline int try_write_address(struct i2c_adapter *i2c_adap,
- unsigned char addr, int retries)
-{
- struct usb_usbvision *usbvision;
- int i, ret = -1;
- char buf[4];
-
- usbvision = (struct usb_usbvision *)i2c_get_adapdata(i2c_adap);
- buf[0] = 0x00;
- for (i = 0; i <= retries; i++) {
- ret = (usbvision_i2c_write(usbvision, addr, buf, 1));
- if (ret == 1)
- break; /* success! */
- udelay(5);
- if (i == retries) /* no success */
- break;
- udelay(10);
- }
- if (i) {
- PDEBUG(DBG_I2C, "Needed %d retries for address %#2x", i, addr);
- PDEBUG(DBG_I2C, "Maybe there's no device at this address");
- }
- return ret;
-}
-
-static inline int try_read_address(struct i2c_adapter *i2c_adap,
- unsigned char addr, int retries)
-{
- struct usb_usbvision *usbvision;
- int i, ret = -1;
- char buf[4];
-
- usbvision = (struct usb_usbvision *)i2c_get_adapdata(i2c_adap);
- for (i = 0; i <= retries; i++) {
- ret = (usbvision_i2c_read(usbvision, addr, buf, 1));
- if (ret == 1)
- break; /* success! */
- udelay(5);
- if (i == retries) /* no success */
- break;
- udelay(10);
- }
- if (i) {
- PDEBUG(DBG_I2C, "Needed %d retries for address %#2x", i, addr);
- PDEBUG(DBG_I2C, "Maybe there's no device at this address");
- }
- return ret;
-}
-
-static inline int usb_find_address(struct i2c_adapter *i2c_adap,
- struct i2c_msg *msg, int retries,
- unsigned char *add)
-{
- unsigned short flags = msg->flags;
-
- unsigned char addr;
- int ret;
-
- addr = (msg->addr << 1);
- if (flags & I2C_M_RD)
- addr |= 1;
-
- add[0] = addr;
- if (flags & I2C_M_RD)
- ret = try_read_address(i2c_adap, addr, retries);
- else
- ret = try_write_address(i2c_adap, addr, retries);
-
- if (ret != 1)
- return -EREMOTEIO;
-
- return 0;
-}
-
-static int
-usbvision_i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)
-{
- struct i2c_msg *pmsg;
- struct usb_usbvision *usbvision;
- int i, ret;
- unsigned char addr = 0;
-
- usbvision = (struct usb_usbvision *)i2c_get_adapdata(i2c_adap);
-
- for (i = 0; i < num; i++) {
- pmsg = &msgs[i];
- ret = usb_find_address(i2c_adap, pmsg, i2c_adap->retries, &addr);
- if (ret != 0) {
- PDEBUG(DBG_I2C, "got NAK from device, message #%d", i);
- return (ret < 0) ? ret : -EREMOTEIO;
- }
-
- if (pmsg->flags & I2C_M_RD) {
- /* read bytes into buffer */
- ret = (usbvision_i2c_read(usbvision, addr, pmsg->buf, pmsg->len));
- if (ret < pmsg->len)
- return (ret < 0) ? ret : -EREMOTEIO;
- } else {
- /* write bytes from buffer */
- ret = (usbvision_i2c_write(usbvision, addr, pmsg->buf, pmsg->len));
- if (ret < pmsg->len)
- return (ret < 0) ? ret : -EREMOTEIO;
- }
- }
- return num;
-}
-
-static u32 functionality(struct i2c_adapter *adap)
-{
- return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
-}
-
-/* -----exported algorithm data: ------------------------------------- */
-
-static struct i2c_algorithm usbvision_algo = {
- .master_xfer = usbvision_i2c_xfer,
- .smbus_xfer = NULL,
- .functionality = functionality,
-};
-
-
-/* ----------------------------------------------------------------------- */
-/* usbvision specific I2C functions */
-/* ----------------------------------------------------------------------- */
-static struct i2c_adapter i2c_adap_template;
-
-int usbvision_i2c_register(struct usb_usbvision *usbvision)
-{
- static unsigned short saa711x_addrs[] = {
- 0x4a >> 1, 0x48 >> 1, /* SAA7111, SAA7111A and SAA7113 */
- 0x42 >> 1, 0x40 >> 1, /* SAA7114, SAA7115 and SAA7118 */
- I2C_CLIENT_END };
-
- if (usbvision->registered_i2c)
- return 0;
-
- memcpy(&usbvision->i2c_adap, &i2c_adap_template,
- sizeof(struct i2c_adapter));
-
- sprintf(usbvision->i2c_adap.name, "%s-%d-%s", i2c_adap_template.name,
- usbvision->dev->bus->busnum, usbvision->dev->devpath);
- PDEBUG(DBG_I2C, "Adaptername: %s", usbvision->i2c_adap.name);
- usbvision->i2c_adap.dev.parent = &usbvision->dev->dev;
-
- i2c_set_adapdata(&usbvision->i2c_adap, &usbvision->v4l2_dev);
-
- if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) {
- printk(KERN_ERR "usbvision_i2c_register: can't write reg\n");
- return -EBUSY;
- }
-
- PDEBUG(DBG_I2C, "I2C debugging is enabled [i2c]");
- PDEBUG(DBG_I2C, "ALGO debugging is enabled [i2c]");
-
- /* register new adapter to i2c module... */
-
- usbvision->i2c_adap.algo = &usbvision_algo;
-
- usbvision->i2c_adap.timeout = 100; /* default values, should */
- usbvision->i2c_adap.retries = 3; /* be replaced by defines */
-
- i2c_add_adapter(&usbvision->i2c_adap);
-
- PDEBUG(DBG_I2C, "i2c bus for %s registered", usbvision->i2c_adap.name);
-
- /* Request the load of the i2c modules we need */
- switch (usbvision_device_data[usbvision->dev_model].codec) {
- case CODEC_SAA7113:
- case CODEC_SAA7111:
- /* Without this delay the detection of the saa711x is
- hit-and-miss. */
- mdelay(10);
- v4l2_i2c_new_subdev(&usbvision->v4l2_dev,
- &usbvision->i2c_adap,
- "saa7115_auto", 0, saa711x_addrs);
- break;
- }
- if (usbvision_device_data[usbvision->dev_model].tuner == 1) {
- struct v4l2_subdev *sd;
- enum v4l2_i2c_tuner_type type;
- struct tuner_setup tun_setup;
-
- sd = v4l2_i2c_new_subdev(&usbvision->v4l2_dev,
- &usbvision->i2c_adap,
- "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_DEMOD));
- /* depending on whether we found a demod or not, select
- the tuner type. */
- type = sd ? ADDRS_TV_WITH_DEMOD : ADDRS_TV;
-
- sd = v4l2_i2c_new_subdev(&usbvision->v4l2_dev,
- &usbvision->i2c_adap,
- "tuner", 0, v4l2_i2c_tuner_addrs(type));
-
- if (sd == NULL)
- return -ENODEV;
- if (usbvision->tuner_type != -1) {
- tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
- tun_setup.type = usbvision->tuner_type;
- tun_setup.addr = v4l2_i2c_subdev_addr(sd);
- call_all(usbvision, tuner, s_type_addr, &tun_setup);
- }
- }
- usbvision->registered_i2c = 1;
-
- return 0;
-}
-
-int usbvision_i2c_unregister(struct usb_usbvision *usbvision)
-{
- if (!usbvision->registered_i2c)
- return 0;
-
- i2c_del_adapter(&(usbvision->i2c_adap));
- usbvision->registered_i2c = 0;
-
- PDEBUG(DBG_I2C, "i2c bus for %s unregistered", usbvision->i2c_adap.name);
-
- return 0;
-}
-
-static int
-usbvision_i2c_read_max4(struct usb_usbvision *usbvision, unsigned char addr,
- char *buf, short len)
-{
- int rc, retries;
-
- for (retries = 5;;) {
- rc = usbvision_write_reg(usbvision, USBVISION_SER_ADRS, addr);
- if (rc < 0)
- return rc;
-
- /* Initiate byte read cycle */
- /* USBVISION_SER_CONT <- d0-d2 n. of bytes to r/w */
- /* d3 0=Wr 1=Rd */
- rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
- (len & 0x07) | 0x18);
- if (rc < 0)
- return rc;
-
- /* Test for Busy and ACK */
- do {
- /* USBVISION_SER_CONT -> d4 == 0 busy */
- rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
- } while (rc > 0 && ((rc & 0x10) != 0)); /* Retry while busy */
- if (rc < 0)
- return rc;
-
- /* USBVISION_SER_CONT -> d5 == 1 Not ack */
- if ((rc & 0x20) == 0) /* Ack? */
- break;
-
- /* I2C abort */
- rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
- if (rc < 0)
- return rc;
-
- if (--retries < 0)
- return -1;
- }
-
- switch (len) {
- case 4:
- buf[3] = usbvision_read_reg(usbvision, USBVISION_SER_DAT4);
- case 3:
- buf[2] = usbvision_read_reg(usbvision, USBVISION_SER_DAT3);
- case 2:
- buf[1] = usbvision_read_reg(usbvision, USBVISION_SER_DAT2);
- case 1:
- buf[0] = usbvision_read_reg(usbvision, USBVISION_SER_DAT1);
- break;
- default:
- printk(KERN_ERR
- "usbvision_i2c_read_max4: buffer length > 4\n");
- }
-
- if (i2c_debug & DBG_I2C) {
- int idx;
-
- for (idx = 0; idx < len; idx++)
- PDEBUG(DBG_I2C, "read %x from address %x", (unsigned char)buf[idx], addr);
- }
- return len;
-}
-
-
-static int usbvision_i2c_write_max4(struct usb_usbvision *usbvision,
- unsigned char addr, const char *buf,
- short len)
-{
- int rc, retries;
- int i;
- unsigned char value[6];
- unsigned char ser_cont;
-
- ser_cont = (len & 0x07) | 0x10;
-
- value[0] = addr;
- value[1] = ser_cont;
- for (i = 0; i < len; i++)
- value[i + 2] = buf[i];
-
- for (retries = 5;;) {
- rc = usb_control_msg(usbvision->dev,
- usb_sndctrlpipe(usbvision->dev, 1),
- USBVISION_OP_CODE,
- USB_DIR_OUT | USB_TYPE_VENDOR |
- USB_RECIP_ENDPOINT, 0,
- (__u16) USBVISION_SER_ADRS, value,
- len + 2, HZ);
-
- if (rc < 0)
- return rc;
-
- rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
- (len & 0x07) | 0x10);
- if (rc < 0)
- return rc;
-
- /* Test for Busy and ACK */
- do {
- rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
- } while (rc > 0 && ((rc & 0x10) != 0)); /* Retry while busy */
- if (rc < 0)
- return rc;
-
- if ((rc & 0x20) == 0) /* Ack? */
- break;
-
- /* I2C abort */
- usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
-
- if (--retries < 0)
- return -1;
-
- }
-
- if (i2c_debug & DBG_I2C) {
- int idx;
-
- for (idx = 0; idx < len; idx++)
- PDEBUG(DBG_I2C, "wrote %x at address %x", (unsigned char)buf[idx], addr);
- }
- return len;
-}
-
-static int usbvision_i2c_write(struct usb_usbvision *usbvision, unsigned char addr, char *buf,
- short len)
-{
- char *buf_ptr = buf;
- int retval;
- int wrcount = 0;
- int count;
- int max_len = 4;
-
- while (len > 0) {
- count = (len > max_len) ? max_len : len;
- retval = usbvision_i2c_write_max4(usbvision, addr, buf_ptr, count);
- if (retval > 0) {
- len -= count;
- buf_ptr += count;
- wrcount += count;
- } else
- return (retval < 0) ? retval : -EFAULT;
- }
- return wrcount;
-}
-
-static int usbvision_i2c_read(struct usb_usbvision *usbvision, unsigned char addr, char *buf,
- short len)
-{
- char temp[4];
- int retval, i;
- int rdcount = 0;
- int count;
-
- while (len > 0) {
- count = (len > 3) ? 4 : len;
- retval = usbvision_i2c_read_max4(usbvision, addr, temp, count);
- if (retval > 0) {
- for (i = 0; i < len; i++)
- buf[rdcount + i] = temp[i];
- len -= count;
- rdcount += count;
- } else
- return (retval < 0) ? retval : -EFAULT;
- }
- return rdcount;
-}
-
-static struct i2c_adapter i2c_adap_template = {
- .owner = THIS_MODULE,
- .name = "usbvision",
-};
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-basic-offset: 8
- * End:
- */