[media] Move CI cxd2099 driver to staging

This driver is abusing the kernel<=>userspace API, due to the lack of a
proper solution for it. A discussion were done at:
	http://www.mail-archive.com/linux-media@vger.kernel.org/msg22196.html
But there's not a solution for it yet. So, move the driver to staging, while
we don't have a final solution.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 4 insertions, 607 deletions

diff --git a/drivers/media/dvb/ngene/Makefile b/drivers/media/dvb/ngene/Makefile
index 00d12d6c461..2bc96874d04 100644
--- a/drivers/media/dvb/ngene/Makefile
+++ b/drivers/media/dvb/ngene/Makefile
@@ -2,10 +2,13 @@
 # Makefile for the nGene device driver
 #
 
-ngene-objs := ngene-core.o ngene-i2c.o ngene-cards.o ngene-dvb.o cxd2099.o
+ngene-objs := ngene-core.o ngene-i2c.o ngene-cards.o ngene-dvb.o
 
 obj-$(CONFIG_DVB_NGENE) += ngene.o
 
 EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core/
 EXTRA_CFLAGS += -Idrivers/media/dvb/frontends/
 EXTRA_CFLAGS += -Idrivers/media/common/tuners/
+
+# For the staging CI driver cxd2099
+EXTRA_CFLAGS += -Idrivers/staging/cxd2099/
diff --git a/drivers/media/dvb/ngene/cxd2099.c b/drivers/media/dvb/ngene/cxd2099.c
deleted file mode 100644
index b49186c74eb..00000000000
--- a/drivers/media/dvb/ngene/cxd2099.c
+++ /dev/null
@@ -1,574 +0,0 @@
-/*
- * cxd2099.c: Driver for the CXD2099AR Common Interface Controller
- *
- * Copyright (C) 2010 DigitalDevices UG
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 only, as published by the Free Software Foundation.
- *
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <linux/version.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/i2c.h>
-#include <linux/wait.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/io.h>
-
-#include "cxd2099.h"
-
-#define MAX_BUFFER_SIZE 248
-
-struct cxd {
-	struct dvb_ca_en50221 en;
-
-	struct i2c_adapter *i2c;
-	u8     adr;
-	u8     regs[0x23];
-	u8     lastaddress;
-	u8     clk_reg_f;
-	u8     clk_reg_b;
-	int    mode;
-	u32    bitrate;
-	int    ready;
-	int    dr;
-	int    slot_stat;
-
-	u8     amem[1024];
-	int    amem_read;
-
-	int    cammode;
-	struct mutex lock;
-};
-
-static int i2c_write_reg(struct i2c_adapter *adapter, u8 adr,
-			 u8 reg, u8 data)
-{
-	u8 m[2] = {reg, data};
-	struct i2c_msg msg = {.addr = adr, .flags = 0, .buf = m, .len = 2};
-
-	if (i2c_transfer(adapter, &msg, 1) != 1) {
-		printk(KERN_ERR "Failed to write to I2C register %02x@%02x!\n",
-		       reg, adr);
-		return -1;
-	}
-	return 0;
-}
-
-static int i2c_write(struct i2c_adapter *adapter, u8 adr,
-		     u8 *data, u8 len)
-{
-	struct i2c_msg msg = {.addr = adr, .flags = 0, .buf = data, .len = len};
-
-	if (i2c_transfer(adapter, &msg, 1) != 1) {
-		printk(KERN_ERR "Failed to write to I2C!\n");
-		return -1;
-	}
-	return 0;
-}
-
-static int i2c_read_reg(struct i2c_adapter *adapter, u8 adr,
-			u8 reg, u8 *val)
-{
-	struct i2c_msg msgs[2] = {{.addr = adr, .flags = 0,
-				   .buf = &reg, .len = 1 },
-				  {.addr = adr, .flags = I2C_M_RD,
-				   .buf = val, .len = 1 } };
-
-	if (i2c_transfer(adapter, msgs, 2) != 2) {
-		printk(KERN_ERR "error in i2c_read_reg\n");
-		return -1;
-	}
-	return 0;
-}
-
-static int i2c_read(struct i2c_adapter *adapter, u8 adr,
-		    u8 reg, u8 *data, u8 n)
-{
-	struct i2c_msg msgs[2] = {{.addr = adr, .flags = 0,
-				   .buf = &reg, .len = 1 },
-				  {.addr = adr, .flags = I2C_M_RD,
-				   .buf = data, .len = n } };
-
-	if (i2c_transfer(adapter, msgs, 2) != 2) {
-		printk(KERN_ERR "error in i2c_read\n");
-		return -1;
-	}
-	return 0;
-}
-
-static int read_block(struct cxd *ci, u8 adr, u8 *data, u8 n)
-{
-	int status;
-
-	status = i2c_write_reg(ci->i2c, ci->adr, 0, adr);
-	if (!status) {
-		ci->lastaddress = adr;
-		status = i2c_read(ci->i2c, ci->adr, 1, data, n);
-	}
-	return status;
-}
-
-static int read_reg(struct cxd *ci, u8 reg, u8 *val)
-{
-	return read_block(ci, reg, val, 1);
-}
-
-
-static int read_pccard(struct cxd *ci, u16 address, u8 *data, u8 n)
-{
-	int status;
-	u8 addr[3] = { 2, address&0xff, address>>8 };
-
-	status = i2c_write(ci->i2c, ci->adr, addr, 3);
-	if (!status)
-		status = i2c_read(ci->i2c, ci->adr, 3, data, n);
-	return status;
-}
-
-static int write_pccard(struct cxd *ci, u16 address, u8 *data, u8 n)
-{
-	int status;
-	u8 addr[3] = { 2, address&0xff, address>>8 };
-
-	status = i2c_write(ci->i2c, ci->adr, addr, 3);
-	if (!status) {
-		u8 buf[256] = {3};
-		memcpy(buf+1, data, n);
-		status = i2c_write(ci->i2c, ci->adr, buf, n+1);
-	}
-	return status;
-}
-
-static int read_io(struct cxd *ci, u16 address, u8 *val)
-{
-	int status;
-	u8 addr[3] = { 2, address&0xff, address>>8 };
-
-	status = i2c_write(ci->i2c, ci->adr, addr, 3);
-	if (!status)
-		status = i2c_read(ci->i2c, ci->adr, 3, val, 1);
-	return status;
-}
-
-static int write_io(struct cxd *ci, u16 address, u8 val)
-{
-	int status;
-	u8 addr[3] = { 2, address&0xff, address>>8 };
-	u8 buf[2] = { 3, val };
-
-	status = i2c_write(ci->i2c, ci->adr, addr, 3);
-	if (!status)
-		status = i2c_write(ci->i2c, ci->adr, buf, 2);
-
-	return status;
-}
-
-
-static int write_regm(struct cxd *ci, u8 reg, u8 val, u8 mask)
-{
-	int status;
-
-	status = i2c_write_reg(ci->i2c, ci->adr, 0, reg);
-	if (!status && reg >= 6 && reg <= 8 && mask != 0xff)
-		status = i2c_read_reg(ci->i2c, ci->adr, 1, &ci->regs[reg]);
-	ci->regs[reg] = (ci->regs[reg]&(~mask))|val;
-	if (!status) {
-		ci->lastaddress = reg;
-		status = i2c_write_reg(ci->i2c, ci->adr, 1, ci->regs[reg]);
-	}
-	if (reg == 0x20)
-		ci->regs[reg] &= 0x7f;
-	return status;
-}
-
-static int write_reg(struct cxd *ci, u8 reg, u8 val)
-{
-	return write_regm(ci, reg, val, 0xff);
-}
-
-#ifdef BUFFER_MODE
-static int write_block(struct cxd *ci, u8 adr, u8 *data, int n)
-{
-	int status;
-	u8 buf[256] = {1};
-
-	status = i2c_write_reg(ci->i2c, ci->adr, 0, adr);
-	if (!status) {
-		ci->lastaddress = adr;
-		memcpy(buf+1, data, n);
-		status = i2c_write(ci->i2c, ci->adr, buf, n+1);
-	}
-	return status;
-}
-#endif
-
-static void set_mode(struct cxd *ci, int mode)
-{
-	if (mode == ci->mode)
-		return;
-
-	switch (mode) {
-	case 0x00: /* IO mem */
-		write_regm(ci, 0x06, 0x00, 0x07);
-		break;
-	case 0x01: /* ATT mem */
-		write_regm(ci, 0x06, 0x02, 0x07);
-		break;
-	default:
-		break;
-	}
-	ci->mode = mode;
-}
-
-static void cam_mode(struct cxd *ci, int mode)
-{
-	if (mode == ci->cammode)
-		return;
-
-	switch (mode) {
-	case 0x00:
-		write_regm(ci, 0x20, 0x80, 0x80);
-		break;
-	case 0x01:
-		printk(KERN_INFO "enable cam buffer mode\n");
-		/* write_reg(ci, 0x0d, 0x00); */
-		/* write_reg(ci, 0x0e, 0x01); */
-		write_regm(ci, 0x08, 0x40, 0x40);
-		/* read_reg(ci, 0x12, &dummy); */
-		write_regm(ci, 0x08, 0x80, 0x80);
-		break;
-	default:
-		break;
-	}
-	ci->cammode = mode;
-}
-
-
-
-#define CHK_ERROR(s) if ((status = s)) break
-
-static int init(struct cxd *ci)
-{
-	int status;
-
-	mutex_lock(&ci->lock);
-	ci->mode = -1;
-	do {
-		CHK_ERROR(write_reg(ci, 0x00, 0x00));
-		CHK_ERROR(write_reg(ci, 0x01, 0x00));
-		CHK_ERROR(write_reg(ci, 0x02, 0x10));
-		CHK_ERROR(write_reg(ci, 0x03, 0x00));
-		CHK_ERROR(write_reg(ci, 0x05, 0xFF));
-		CHK_ERROR(write_reg(ci, 0x06, 0x1F));
-		CHK_ERROR(write_reg(ci, 0x07, 0x1F));
-		CHK_ERROR(write_reg(ci, 0x08, 0x28));
-		CHK_ERROR(write_reg(ci, 0x14, 0x20));
-
-		CHK_ERROR(write_reg(ci, 0x09, 0x4D)); /* Input Mode C, BYPass Serial, TIVAL = low, MSB */
-		CHK_ERROR(write_reg(ci, 0x0A, 0xA7)); /* TOSTRT = 8, Mode B (gated clock), falling Edge, Serial, POL=HIGH, MSB */
-
-		/* Sync detector */
-		CHK_ERROR(write_reg(ci, 0x0B, 0x33));
-		CHK_ERROR(write_reg(ci, 0x0C, 0x33));
-
-		CHK_ERROR(write_regm(ci, 0x14, 0x00, 0x0F));
-		CHK_ERROR(write_reg(ci, 0x15, ci->clk_reg_b));
-		CHK_ERROR(write_regm(ci, 0x16, 0x00, 0x0F));
-		CHK_ERROR(write_reg(ci, 0x17, ci->clk_reg_f));
-
-		CHK_ERROR(write_reg(ci, 0x20, 0x28)); /* Integer Divider, Falling Edge, Internal Sync, */
-		CHK_ERROR(write_reg(ci, 0x21, 0x00)); /* MCLKI = TICLK/8 */
-		CHK_ERROR(write_reg(ci, 0x22, 0x07)); /* MCLKI = TICLK/8 */
-
-
-		CHK_ERROR(write_regm(ci, 0x20, 0x80, 0x80)); /* Reset CAM state machine */
-
-		CHK_ERROR(write_regm(ci, 0x03, 0x02, 02));  /* Enable IREQA Interrupt */
-		CHK_ERROR(write_reg(ci, 0x01, 0x04));  /* Enable CD Interrupt */
-		CHK_ERROR(write_reg(ci, 0x00, 0x31));  /* Enable TS1,Hot Swap,Slot A */
-		CHK_ERROR(write_regm(ci, 0x09, 0x08, 0x08));  /* Put TS in bypass */
-		ci->cammode = -1;
-#ifdef BUFFER_MODE
-		cam_mode(ci, 0);
-#endif
-	} while (0);
-	mutex_unlock(&ci->lock);
-
-	return 0;
-}
-
-
-static int read_attribute_mem(struct dvb_ca_en50221 *ca,
-			      int slot, int address)
-{
-	struct cxd *ci = ca->data;
-	u8 val;
-	mutex_lock(&ci->lock);
-	set_mode(ci, 1);
-	read_pccard(ci, address, &val, 1);
-	mutex_unlock(&ci->lock);
-	return val;
-}
-
-
-static int write_attribute_mem(struct dvb_ca_en50221 *ca, int slot,
-			       int address, u8 value)
-{
-	struct cxd *ci = ca->data;
-
-	mutex_lock(&ci->lock);
-	set_mode(ci, 1);
-	write_pccard(ci, address, &value, 1);
-	mutex_unlock(&ci->lock);
-	return 0;
-}
-
-static int read_cam_control(struct dvb_ca_en50221 *ca,
-			    int slot, u8 address)
-{
-	struct cxd *ci = ca->data;
-	u8 val;
-
-	mutex_lock(&ci->lock);
-	set_mode(ci, 0);
-	read_io(ci, address, &val);
-	mutex_unlock(&ci->lock);
-	return val;
-}
-
-static int write_cam_control(struct dvb_ca_en50221 *ca, int slot,
-			     u8 address, u8 value)
-{
-	struct cxd *ci = ca->data;
-
-	mutex_lock(&ci->lock);
-	set_mode(ci, 0);
-	write_io(ci, address, value);
-	mutex_unlock(&ci->lock);
-	return 0;
-}
-
-static int slot_reset(struct dvb_ca_en50221 *ca, int slot)
-{
-	struct cxd *ci = ca->data;
-
-	mutex_lock(&ci->lock);
-	cam_mode(ci, 0);
-	write_reg(ci, 0x00, 0x21);
-	write_reg(ci, 0x06, 0x1F);
-	write_reg(ci, 0x00, 0x31);
-	write_regm(ci, 0x20, 0x80, 0x80);
-	write_reg(ci, 0x03, 0x02);
-	ci->ready = 0;
-	ci->mode = -1;
-	{
-		int i;
-		for (i = 0; i < 100; i++) {
-			msleep(10);
-			if (ci->ready)
-				break;
-		}
-	}
-	mutex_unlock(&ci->lock);
-	/* msleep(500); */
-	return 0;
-}
-
-static int slot_shutdown(struct dvb_ca_en50221 *ca, int slot)
-{
-	struct cxd *ci = ca->data;
-
-	printk(KERN_INFO "slot_shutdown\n");
-	mutex_lock(&ci->lock);
-	/* write_regm(ci, 0x09, 0x08, 0x08); */
-	write_regm(ci, 0x20, 0x80, 0x80);
-	write_regm(ci, 0x06, 0x07, 0x07);
-	ci->mode = -1;
-	mutex_unlock(&ci->lock);
-	return 0; /* shutdown(ci); */
-}
-
-static int slot_ts_enable(struct dvb_ca_en50221 *ca, int slot)
-{
-	struct cxd *ci = ca->data;
-
-	mutex_lock(&ci->lock);
-	write_regm(ci, 0x09, 0x00, 0x08);
-	set_mode(ci, 0);
-#ifdef BUFFER_MODE
-	cam_mode(ci, 1);
-#endif
-	mutex_unlock(&ci->lock);
-	return 0;
-}
-
-
-static int campoll(struct cxd *ci)
-{
-	u8 istat;
-
-	read_reg(ci, 0x04, &istat);
-	if (!istat)
-		return 0;
-	write_reg(ci, 0x05, istat);
-
-	if (istat&0x40) {
-		ci->dr = 1;
-		printk(KERN_INFO "DR\n");
-	}
-	if (istat&0x20)
-		printk(KERN_INFO "WC\n");
-
-	if (istat&2) {
-		u8 slotstat;
-
-		read_reg(ci, 0x01, &slotstat);
-		if (!(2&slotstat)) {
-			if (!ci->slot_stat) {
-				ci->slot_stat |= DVB_CA_EN50221_POLL_CAM_PRESENT;
-				write_regm(ci, 0x03, 0x08, 0x08);
-			}
-
-		} else {
-			if (ci->slot_stat) {
-				ci->slot_stat = 0;
-				write_regm(ci, 0x03, 0x00, 0x08);
-				printk(KERN_INFO "NO CAM\n");
-				ci->ready = 0;
-			}
-		}
-		if (istat&8 && ci->slot_stat == DVB_CA_EN50221_POLL_CAM_PRESENT) {
-			ci->ready = 1;
-			ci->slot_stat |= DVB_CA_EN50221_POLL_CAM_READY;
-			printk(KERN_INFO "READY\n");
-		}
-	}
-	return 0;
-}
-
-
-static int poll_slot_status(struct dvb_ca_en50221 *ca, int slot, int open)
-{
-	struct cxd *ci = ca->data;
-	u8 slotstat;
-
-	mutex_lock(&ci->lock);
-	campoll(ci);
-	read_reg(ci, 0x01, &slotstat);
-	mutex_unlock(&ci->lock);
-
-	return ci->slot_stat;
-}
-
-#ifdef BUFFER_MODE
-static int read_data(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount)
-{
-	struct cxd *ci = ca->data;
-	u8 msb, lsb;
-	u16 len;
-
-	mutex_lock(&ci->lock);
-	campoll(ci);
-	mutex_unlock(&ci->lock);
-
-	printk(KERN_INFO "read_data\n");
-	if (!ci->dr)
-		return 0;
-
-	mutex_lock(&ci->lock);
-	read_reg(ci, 0x0f, &msb);
-	read_reg(ci, 0x10, &lsb);
-	len = (msb<<8)|lsb;
-	read_block(ci, 0x12, ebuf, len);
-	ci->dr = 0;
-	mutex_unlock(&ci->lock);
-
-	return len;
-}
-
-static int write_data(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount)
-{
-	struct cxd *ci = ca->data;
-
-	mutex_lock(&ci->lock);
-	printk(KERN_INFO "write_data %d\n", ecount);
-	write_reg(ci, 0x0d, ecount>>8);
-	write_reg(ci, 0x0e, ecount&0xff);
-	write_block(ci, 0x11, ebuf, ecount);
-	mutex_unlock(&ci->lock);
-	return ecount;
-}
-#endif
-
-static struct dvb_ca_en50221 en_templ = {
-	.read_attribute_mem  = read_attribute_mem,
-	.write_attribute_mem = write_attribute_mem,
-	.read_cam_control    = read_cam_control,
-	.write_cam_control   = write_cam_control,
-	.slot_reset          = slot_reset,
-	.slot_shutdown       = slot_shutdown,
-	.slot_ts_enable      = slot_ts_enable,
-	.poll_slot_status    = poll_slot_status,
-#ifdef BUFFER_MODE
-	.read_data           = read_data,
-	.write_data          = write_data,
-#endif
-
-};
-
-struct dvb_ca_en50221 *cxd2099_attach(u8 adr, void *priv,
-				      struct i2c_adapter *i2c)
-{
-	struct cxd *ci = 0;
-	u32 bitrate = 62000000;
-	u8 val;
-
-	if (i2c_read_reg(i2c, adr, 0, &val) < 0) {
-		printk(KERN_ERR "No CXD2099 detected at %02x\n", adr);
-		return 0;
-	}
-
-	ci = kmalloc(sizeof(struct cxd), GFP_KERNEL);
-	if (!ci)
-		return 0;
-	memset(ci, 0, sizeof(*ci));
-
-	mutex_init(&ci->lock);
-	ci->i2c = i2c;
-	ci->adr = adr;
-	ci->lastaddress = 0xff;
-	ci->clk_reg_b = 0x4a;
-	ci->clk_reg_f = 0x1b;
-	ci->bitrate = bitrate;
-
-	memcpy(&ci->en, &en_templ, sizeof(en_templ));
-	ci->en.data = ci;
-	init(ci);
-	printk(KERN_INFO "Attached CXD2099AR at %02x\n", ci->adr);
-	return &ci->en;
-}
-EXPORT_SYMBOL(cxd2099_attach);
-
-MODULE_DESCRIPTION("cxd2099");
-MODULE_AUTHOR("Ralph Metzler <rjkm@metzlerbros.de>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/ngene/cxd2099.h b/drivers/media/dvb/ngene/cxd2099.h
deleted file mode 100644
index f71b807e8bb..00000000000
--- a/drivers/media/dvb/ngene/cxd2099.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * cxd2099.h: Driver for the CXD2099AR Common Interface Controller
- *
- * Copyright (C) 2010 DigitalDevices UG
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 only, as published by the Free Software Foundation.
- *
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
- */
-
-#ifndef _CXD2099_H_
-#define _CXD2099_H_
-
-#include <dvb_ca_en50221.h>
-
-struct dvb_ca_en50221 *cxd2099_attach(u8 adr, void *priv, struct i2c_adapter *i2c);
-
-#endif