1 files changed, 0 insertions, 425 deletions
diff --git a/drivers/staging/cx25821/cx25821-i2c.c b/drivers/staging/cx25821/cx25821-i2c.c
deleted file mode 100644
index 4d3d0ce40785..000000000000
--- a/drivers/staging/cx25821/cx25821-i2c.c
+++ /dev/null
@@ -1,425 +0,0 @@
-/*
- *  Driver for the Conexant CX25821 PCIe bridge
- *
- *  Copyright (C) 2009 Conexant Systems Inc.
- *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
- *	Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
- *
- *  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.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include "cx25821.h"
-#include <linux/i2c.h>
-
-static unsigned int i2c_debug;
-module_param(i2c_debug, int, 0644);
-MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
-
-static unsigned int i2c_scan;
-module_param(i2c_scan, int, 0444);
-MODULE_PARM_DESC(i2c_scan, "scan i2c bus at insmod time");
-
-#define dprintk(level, fmt, arg...)					\
-do {									\
-	if (i2c_debug >= level)						\
-		printk(KERN_DEBUG "%s/0: " fmt, dev->name, ##arg);	\
-} while (0)
-
-#define I2C_WAIT_DELAY 32
-#define I2C_WAIT_RETRY 64
-
-#define I2C_EXTEND  (1 << 3)
-#define I2C_NOSTOP  (1 << 4)
-
-static inline int i2c_slave_did_ack(struct i2c_adapter *i2c_adap)
-{
-	struct cx25821_i2c *bus = i2c_adap->algo_data;
-	struct cx25821_dev *dev = bus->dev;
-	return cx_read(bus->reg_stat) & 0x01;
-}
-
-static inline int i2c_is_busy(struct i2c_adapter *i2c_adap)
-{
-	struct cx25821_i2c *bus = i2c_adap->algo_data;
-	struct cx25821_dev *dev = bus->dev;
-	return cx_read(bus->reg_stat) & 0x02 ? 1 : 0;
-}
-
-static int i2c_wait_done(struct i2c_adapter *i2c_adap)
-{
-	int count;
-
-	for (count = 0; count < I2C_WAIT_RETRY; count++) {
-		if (!i2c_is_busy(i2c_adap))
-			break;
-		udelay(I2C_WAIT_DELAY);
-	}
-
-	if (I2C_WAIT_RETRY == count)
-		return 0;
-
-	return 1;
-}
-
-static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
-			 const struct i2c_msg *msg, int joined_rlen)
-{
-	struct cx25821_i2c *bus = i2c_adap->algo_data;
-	struct cx25821_dev *dev = bus->dev;
-	u32 wdata, addr, ctrl;
-	int retval, cnt;
-
-	if (joined_rlen)
-		dprintk(1, "%s(msg->wlen=%d, nextmsg->rlen=%d)\n", __func__,
-			msg->len, joined_rlen);
-	else
-		dprintk(1, "%s(msg->len=%d)\n", __func__, msg->len);
-
-	/* Deal with i2c probe functions with zero payload */
-	if (msg->len == 0) {
-		cx_write(bus->reg_addr, msg->addr << 25);
-		cx_write(bus->reg_ctrl, bus->i2c_period | (1 << 2));
-
-		if (!i2c_wait_done(i2c_adap))
-			return -EIO;
-
-		if (!i2c_slave_did_ack(i2c_adap))
-			return -EIO;
-
-		dprintk(1, "%s(): returns 0\n", __func__);
-		return 0;
-	}
-
-	/* dev, reg + first byte */
-	addr = (msg->addr << 25) | msg->buf[0];
-	wdata = msg->buf[0];
-
-	ctrl = bus->i2c_period | (1 << 12) | (1 << 2);
-
-	if (msg->len > 1)
-		ctrl |= I2C_NOSTOP | I2C_EXTEND;
-	else if (joined_rlen)
-		ctrl |= I2C_NOSTOP;
-
-	cx_write(bus->reg_addr, addr);
-	cx_write(bus->reg_wdata, wdata);
-	cx_write(bus->reg_ctrl, ctrl);
-
-	retval = i2c_wait_done(i2c_adap);
-	if (retval < 0)
-		goto err;
-
-	if (retval == 0)
-		goto eio;
-
-	if (i2c_debug) {
-		if (!(ctrl & I2C_NOSTOP))
-			printk(" >\n");
-	}
-
-	for (cnt = 1; cnt < msg->len; cnt++) {
-		/* following bytes */
-		wdata = msg->buf[cnt];
-		ctrl = bus->i2c_period | (1 << 12) | (1 << 2);
-
-		if (cnt < msg->len - 1)
-			ctrl |= I2C_NOSTOP | I2C_EXTEND;
-		else if (joined_rlen)
-			ctrl |= I2C_NOSTOP;
-
-		cx_write(bus->reg_addr, addr);
-		cx_write(bus->reg_wdata, wdata);
-		cx_write(bus->reg_ctrl, ctrl);
-
-		retval = i2c_wait_done(i2c_adap);
-		if (retval < 0)
-			goto err;
-
-		if (retval == 0)
-			goto eio;
-
-		if (i2c_debug) {
-			dprintk(1, " %02x", msg->buf[cnt]);
-			if (!(ctrl & I2C_NOSTOP))
-				dprintk(1, " >\n");
-		}
-	}
-
-	return msg->len;
-
-eio:
-	retval = -EIO;
-err:
-	if (i2c_debug)
-		pr_err(" ERR: %d\n", retval);
-	return retval;
-}
-
-static int i2c_readbytes(struct i2c_adapter *i2c_adap,
-			 const struct i2c_msg *msg, int joined)
-{
-	struct cx25821_i2c *bus = i2c_adap->algo_data;
-	struct cx25821_dev *dev = bus->dev;
-	u32 ctrl, cnt;
-	int retval;
-
-	if (i2c_debug && !joined)
-		dprintk(1, "6-%s(msg->len=%d)\n", __func__, msg->len);
-
-	/* Deal with i2c probe functions with zero payload */
-	if (msg->len == 0) {
-		cx_write(bus->reg_addr, msg->addr << 25);
-		cx_write(bus->reg_ctrl, bus->i2c_period | (1 << 2) | 1);
-		if (!i2c_wait_done(i2c_adap))
-			return -EIO;
-		if (!i2c_slave_did_ack(i2c_adap))
-			return -EIO;
-
-		dprintk(1, "%s(): returns 0\n", __func__);
-		return 0;
-	}
-
-	if (i2c_debug) {
-		if (joined)
-			dprintk(1, " R");
-		else
-			dprintk(1, " <R %02x", (msg->addr << 1) + 1);
-	}
-
-	for (cnt = 0; cnt < msg->len; cnt++) {
-
-		ctrl = bus->i2c_period | (1 << 12) | (1 << 2) | 1;
-
-		if (cnt < msg->len - 1)
-			ctrl |= I2C_NOSTOP | I2C_EXTEND;
-
-		cx_write(bus->reg_addr, msg->addr << 25);
-		cx_write(bus->reg_ctrl, ctrl);
-
-		retval = i2c_wait_done(i2c_adap);
-		if (retval < 0)
-			goto err;
-		if (retval == 0)
-			goto eio;
-		msg->buf[cnt] = cx_read(bus->reg_rdata) & 0xff;
-
-		if (i2c_debug) {
-			dprintk(1, " %02x", msg->buf[cnt]);
-			if (!(ctrl & I2C_NOSTOP))
-				dprintk(1, " >\n");
-		}
-	}
-
-	return msg->len;
-eio:
-	retval = -EIO;
-err:
-	if (i2c_debug)
-		pr_err(" ERR: %d\n", retval);
-	return retval;
-}
-
-static int i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
-{
-	struct cx25821_i2c *bus = i2c_adap->algo_data;
-	struct cx25821_dev *dev = bus->dev;
-	int i, retval = 0;
-
-	dprintk(1, "%s(num = %d)\n", __func__, num);
-
-	for (i = 0; i < num; i++) {
-		dprintk(1, "%s(num = %d) addr = 0x%02x  len = 0x%x\n",
-			__func__, num, msgs[i].addr, msgs[i].len);
-
-		if (msgs[i].flags & I2C_M_RD) {
-			/* read */
-			retval = i2c_readbytes(i2c_adap, &msgs[i], 0);
-		} else if (i + 1 < num && (msgs[i + 1].flags & I2C_M_RD) &&
-			   msgs[i].addr == msgs[i + 1].addr) {
-			/* write then read from same address */
-			retval =
-			    i2c_sendbytes(i2c_adap, &msgs[i], msgs[i + 1].len);
-
-			if (retval < 0)
-				goto err;
-			i++;
-			retval = i2c_readbytes(i2c_adap, &msgs[i], 1);
-		} else {
-			/* write */
-			retval = i2c_sendbytes(i2c_adap, &msgs[i], 0);
-		}
-
-		if (retval < 0)
-			goto err;
-	}
-	return num;
-
-err:
-	return retval;
-}
-
-
-static u32 cx25821_functionality(struct i2c_adapter *adap)
-{
-	return I2C_FUNC_SMBUS_EMUL |
-	    I2C_FUNC_I2C |
-	    I2C_FUNC_SMBUS_WORD_DATA |
-	    I2C_FUNC_SMBUS_READ_WORD_DATA | I2C_FUNC_SMBUS_WRITE_WORD_DATA;
-}
-
-static struct i2c_algorithm cx25821_i2c_algo_template = {
-	.master_xfer = i2c_xfer,
-	.functionality = cx25821_functionality,
-#ifdef NEED_ALGO_CONTROL
-	.algo_control = dummy_algo_control,
-#endif
-};
-
-static struct i2c_adapter cx25821_i2c_adap_template = {
-	.name = "cx25821",
-	.owner = THIS_MODULE,
-	.algo = &cx25821_i2c_algo_template,
-};
-
-static struct i2c_client cx25821_i2c_client_template = {
-	.name = "cx25821 internal",
-};
-
-/* init + register i2c algo-bit adapter */
-int cx25821_i2c_register(struct cx25821_i2c *bus)
-{
-	struct cx25821_dev *dev = bus->dev;
-
-	dprintk(1, "%s(bus = %d)\n", __func__, bus->nr);
-
-	memcpy(&bus->i2c_adap, &cx25821_i2c_adap_template,
-	       sizeof(bus->i2c_adap));
-	memcpy(&bus->i2c_algo, &cx25821_i2c_algo_template,
-	       sizeof(bus->i2c_algo));
-	memcpy(&bus->i2c_client, &cx25821_i2c_client_template,
-	       sizeof(bus->i2c_client));
-
-	bus->i2c_adap.dev.parent = &dev->pci->dev;
-
-	strlcpy(bus->i2c_adap.name, bus->dev->name, sizeof(bus->i2c_adap.name));
-
-	bus->i2c_algo.data = bus;
-	bus->i2c_adap.algo_data = bus;
-	i2c_set_adapdata(&bus->i2c_adap, &dev->v4l2_dev);
-	i2c_add_adapter(&bus->i2c_adap);
-
-	bus->i2c_client.adapter = &bus->i2c_adap;
-
-	/* set up the I2c */
-	bus->i2c_client.addr = (0x88 >> 1);
-
-	return bus->i2c_rc;
-}
-
-int cx25821_i2c_unregister(struct cx25821_i2c *bus)
-{
-	i2c_del_adapter(&bus->i2c_adap);
-	return 0;
-}
-
-void cx25821_av_clk(struct cx25821_dev *dev, int enable)
-{
-	/* write 0 to bus 2 addr 0x144 via i2x_xfer() */
-	char buffer[3];
-	struct i2c_msg msg;
-	dprintk(1, "%s(enabled = %d)\n", __func__, enable);
-
-	/* Register 0x144 */
-	buffer[0] = 0x01;
-	buffer[1] = 0x44;
-	if (enable == 1)
-		buffer[2] = 0x05;
-	else
-		buffer[2] = 0x00;
-
-	msg.addr = 0x44;
-	msg.flags = I2C_M_TEN;
-	msg.len = 3;
-	msg.buf = buffer;
-
-	i2c_xfer(&dev->i2c_bus[0].i2c_adap, &msg, 1);
-}
-
-int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value)
-{
-	struct i2c_client *client = &bus->i2c_client;
-	int retval = 0;
-	int v = 0;
-	u8 addr[2] = { 0, 0 };
-	u8 buf[4] = { 0, 0, 0, 0 };
-
-	struct i2c_msg msgs[2] = {
-		{
-			.addr = client->addr,
-			.flags = 0,
-			.len = 2,
-			.buf = addr,
-		}, {
-			.addr = client->addr,
-			.flags = I2C_M_RD,
-			.len = 4,
-			.buf = buf,
-		}
-	};
-
-	addr[0] = (reg_addr >> 8);
-	addr[1] = (reg_addr & 0xff);
-	msgs[0].addr = 0x44;
-	msgs[1].addr = 0x44;
-
-	retval = i2c_xfer(client->adapter, msgs, 2);
-
-	v = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
-	*value = v;
-
-	return v;
-}
-
-int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value)
-{
-	struct i2c_client *client = &bus->i2c_client;
-	int retval = 0;
-	u8 buf[6] = { 0, 0, 0, 0, 0, 0 };
-
-	struct i2c_msg msgs[1] = {
-		{
-			.addr = client->addr,
-			.flags = 0,
-			.len = 6,
-			.buf = buf,
-		}
-	};
-
-	buf[0] = reg_addr >> 8;
-	buf[1] = reg_addr & 0xff;
-	buf[5] = (value >> 24) & 0xff;
-	buf[4] = (value >> 16) & 0xff;
-	buf[3] = (value >> 8) & 0xff;
-	buf[2] = value & 0xff;
-	client->flags = 0;
-	msgs[0].addr = 0x44;
-
-	retval = i2c_xfer(client->adapter, msgs, 1);
-
-	return retval;
-}