V4L/DVB (10798): Add CIMax(R) SP2 Common Interface code for NetUP Dual DVB-S2 CI card

Add CIMax2 Common Interface code for NetUP Dual DVB-S2 CI card.
SmarDTV CIMax(R) SP2 is Dual CableCARD, DVB Common Interface
and OpenCable Hardware Controller.

Signed-off-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Igor M. Liplianin <liplianin@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 519 insertions, 0 deletions

diff --git a/drivers/media/video/cx23885/cimax2.c b/drivers/media/video/cx23885/cimax2.c
new file mode 100644
index 00000000000..2105c2e4cf4
--- /dev/null
+++ b/drivers/media/video/cx23885/cimax2.c
@@ -0,0 +1,472 @@
+/*
+ * cimax2.c
+ *
+ * CIMax2(R) SP2 driver in conjunction with NetUp Dual DVB-S2 CI card
+ *
+ * Copyright (C) 2009 NetUP Inc.
+ * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
+ * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
+ *
+ * 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 "cx23885.h"
+#include "dvb_ca_en50221.h"
+/**** Bit definitions for MC417_RWD and MC417_OEN registers  ***
+  bits 31-16
++-----------+
+| Reserved  |
++-----------+
+  bit 15  bit 14  bit 13 bit 12  bit 11  bit 10  bit 9   bit 8
++-------+-------+-------+-------+-------+-------+-------+-------+
+|  WR#  |  RD#  |       |  ACK# |  ADHI |  ADLO |  CS1# |  CS0# |
++-------+-------+-------+-------+-------+-------+-------+-------+
+ bit 7   bit 6   bit 5   bit 4   bit 3   bit 2   bit 1   bit 0
++-------+-------+-------+-------+-------+-------+-------+-------+
+|  DATA7|  DATA6|  DATA5|  DATA4|  DATA3|  DATA2|  DATA1|  DATA0|
++-------+-------+-------+-------+-------+-------+-------+-------+
+***/
+/* MC417 */
+#define NETUP_DATA		0x000000ff
+#define NETUP_WR		0x00008000
+#define NETUP_RD		0x00004000
+#define NETUP_ACK		0x00001000
+#define NETUP_ADHI		0x00000800
+#define NETUP_ADLO		0x00000400
+#define NETUP_CS1		0x00000200
+#define NETUP_CS0		0x00000100
+#define NETUP_EN_ALL		0x00001000
+#define NETUP_CTRL_OFF		(NETUP_CS1 | NETUP_CS0 | NETUP_WR | NETUP_RD)
+#define NETUP_CI_CTL		0x04
+#define NETUP_CI_RD		1
+
+
+static unsigned int ci_dbg;
+module_param(ci_dbg, int, 0644);
+MODULE_PARM_DESC(ci_dbg, "Enable CI debugging");
+
+#define ci_dbg_print(args...) \
+	do { \
+		if (ci_dbg) \
+			printk(KERN_DEBUG args); \
+	} while (0)
+
+/* stores all private variables for communication with CI */
+struct netup_ci_state {
+	struct dvb_ca_en50221 ca;
+	struct mutex ca_mutex;
+	struct i2c_adapter *i2c_adap;
+	u8 ci_i2c_addr;
+	int status;
+	struct work_struct work;
+	void *priv;
+};
+
+struct mutex gpio_mutex;/* Two CiMax's uses same GPIO lines */
+
+int netup_read_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
+						u8 *buf, int len)
+{
+	int ret;
+	struct i2c_msg msg[] = {
+		{
+			.addr	= addr,
+			.flags	= 0,
+			.buf	= &reg,
+			.len	= 1
+		}, {
+			.addr	= addr,
+			.flags	= I2C_M_RD,
+			.buf	= buf,
+			.len	= len
+		}
+	};
+
+	ret = i2c_transfer(i2c_adap, msg, 2);
+
+	if (ret != 2) {
+		ci_dbg_print("%s: i2c read error, Reg = 0x%02x, Status = %d\n",
+						__func__, reg, ret);
+
+		return -1;
+	}
+
+	ci_dbg_print("%s: i2c read Addr=0x%04x, Reg = 0x%02x, data = %02x\n",
+						__func__, addr, reg, buf[0]);
+
+	return 0;
+}
+
+int netup_write_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
+						u8 *buf, int len)
+{
+	int ret;
+	u8 buffer[len + 1];
+
+	struct i2c_msg msg = {
+		.addr	= addr,
+		.flags	= 0,
+		.buf	= &buffer[0],
+		.len	= len + 1
+	};
+
+	buffer[0] = reg;
+	memcpy(&buffer[1], buf, len);
+
+	ret = i2c_transfer(i2c_adap, &msg, 1);
+
+	if (ret != 1) {
+		ci_dbg_print("%s: i2c write error, Reg=[0x%02x], Status=%d\n",
+						__func__, reg, ret);
+		return -1;
+	}
+
+	return 0;
+}
+
+int netup_ci_get_mem(struct cx23885_dev *dev)
+{
+	int mem;
+	unsigned long timeout = jiffies + msecs_to_jiffies(1);
+
+	for (;;) {
+		mem = cx_read(MC417_RWD);
+		if ((mem & NETUP_ACK) == 0)
+			break;
+		if (time_after(jiffies, timeout))
+			break;
+		udelay(1);
+	}
+
+	cx_set(MC417_RWD, NETUP_CTRL_OFF);
+
+	return mem & 0xff;
+}
+
+int netup_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot,
+				u8 flag, u8 read, u8 addr, u8 data)
+{
+	struct netup_ci_state *state = en50221->data;
+	struct cx23885_tsport *port = state->priv;
+	struct cx23885_dev *dev = port->dev;
+
+	u8 store;
+	int mem;
+	int ret;
+
+	if (0 != slot)
+		return -EINVAL;
+
+	ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
+							0, &store, 1);
+	if (ret != 0)
+		return ret;
+
+	store &= ~0x0c;
+	store |= flag;
+
+	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
+							0, &store, 1);
+	if (ret != 0)
+		return ret;
+
+	mutex_lock(&gpio_mutex);
+
+	/* write addr */
+	cx_write(MC417_OEN, NETUP_EN_ALL);
+	cx_write(MC417_RWD, NETUP_CTRL_OFF |
+				NETUP_ADLO | (0xff & addr));
+	cx_clear(MC417_RWD, NETUP_ADLO);
+	cx_write(MC417_RWD, NETUP_CTRL_OFF |
+				NETUP_ADHI | (0xff & (addr >> 8)));
+	cx_clear(MC417_RWD, NETUP_ADHI);
+
+	if (read) /* data in */
+		cx_write(MC417_OEN, NETUP_EN_ALL | NETUP_DATA);
+	else /* data out */
+		cx_write(MC417_RWD, NETUP_CTRL_OFF | data);
+
+	/* choose chip */
+	cx_clear(MC417_RWD,
+			(state->ci_i2c_addr == 0x40) ? NETUP_CS0 : NETUP_CS1);
+	/* read/write */
+	cx_clear(MC417_RWD, (read) ? NETUP_RD : NETUP_WR);
+	mem = netup_ci_get_mem(dev);
+
+	mutex_unlock(&gpio_mutex);
+
+	if (!read)
+		if (mem < 0)
+			return -EREMOTEIO;
+
+	ci_dbg_print("%s: %s: addr=[0x%02x], %s=%x\n", __func__,
+			(read) ? "read" : "write", addr,
+			(flag == NETUP_CI_CTL) ? "ctl" : "mem",
+			(read) ? mem : data);
+
+	if (read)
+		return mem;
+
+	return 0;
+}
+
+int netup_ci_read_attribute_mem(struct dvb_ca_en50221 *en50221,
+						int slot, int addr)
+{
+	return netup_ci_op_cam(en50221, slot, 0, NETUP_CI_RD, addr, 0);
+}
+
+int netup_ci_write_attribute_mem(struct dvb_ca_en50221 *en50221,
+						int slot, int addr, u8 data)
+{
+	return netup_ci_op_cam(en50221, slot, 0, 0, addr, data);
+}
+
+int netup_ci_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr)
+{
+	return netup_ci_op_cam(en50221, slot, NETUP_CI_CTL,
+							NETUP_CI_RD, addr, 0);
+}
+
+int netup_ci_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot,
+							u8 addr, u8 data)
+{
+	return netup_ci_op_cam(en50221, slot, NETUP_CI_CTL, 0, addr, data);
+}
+
+int netup_ci_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
+{
+	struct netup_ci_state *state = en50221->data;
+	u8 buf =  0x80;
+	int ret;
+
+	if (0 != slot)
+		return -EINVAL;
+
+	udelay(500);
+	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
+							0, &buf, 1);
+
+	if (ret != 0)
+		return ret;
+
+	udelay(500);
+
+	buf = 0x00;
+	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
+							0, &buf, 1);
+
+	msleep(1000);
+	dvb_ca_en50221_camready_irq(&state->ca, 0);
+
+	return 0;
+
+}
+
+int netup_ci_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
+{
+	/* not implemented */
+	return 0;
+}
+
+int netup_ci_slot_ts_ctl(struct dvb_ca_en50221 *en50221, int slot)
+{
+	struct netup_ci_state *state = en50221->data;
+	u8 buf = 0x60;
+
+	if (0 != slot)
+		return -EINVAL;
+
+	return netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
+							0, &buf, 1);
+}
+
+/* work handler */
+static void netup_read_ci_status(struct work_struct *work)
+{
+	struct netup_ci_state *state =
+			container_of(work, struct netup_ci_state, work);
+	u8 buf[33];
+	int ret;
+
+	ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
+							0, &buf[0], 33);
+
+	if (ret != 0)
+		return;
+
+	ci_dbg_print("%s: Slot Status Addr=[0x%04x], Reg=[0x%02x], data=%02x, "
+		"TS config = %02x\n", __func__, state->ci_i2c_addr, 0, buf[0],
+		buf[32]);
+
+	if (buf[0] && 1)
+		state->status = DVB_CA_EN50221_POLL_CAM_PRESENT |
+			DVB_CA_EN50221_POLL_CAM_READY;
+	else
+		state->status = 0;
+}
+
+/* CI irq handler */
+int netup_ci_slot_status(struct cx23885_dev *dev, u32 pci_status)
+{
+	struct cx23885_tsport *port = NULL;
+	struct netup_ci_state *state = NULL;
+
+	if (pci_status & PCI_MSK_GPIO0)
+		port = &dev->ts1;
+	else if (pci_status & PCI_MSK_GPIO1)
+		port = &dev->ts2;
+	else /* who calls ? */
+		return 0;
+
+	state = port->port_priv;
+
+	schedule_work(&state->work);
+
+	return 1;
+}
+
+int netup_poll_ci_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open)
+{
+	struct netup_ci_state *state = en50221->data;
+
+	if (0 != slot)
+		return -EINVAL;
+
+	return state->status;
+}
+
+int netup_ci_init(struct cx23885_tsport *port)
+{
+	struct netup_ci_state *state;
+	u8 cimax_init[34] = {
+		0x00, /* module A control*/
+		0x00, /* auto select mask high A */
+		0x00, /* auto select mask low A */
+		0x00, /* auto select pattern high A */
+		0x00, /* auto select pattern low A */
+		0x44, /* memory access time A */
+		0x00, /* invert input A */
+		0x00, /* RFU */
+		0x00, /* RFU */
+		0x00, /* module B control*/
+		0x00, /* auto select mask high B */
+		0x00, /* auto select mask low B */
+		0x00, /* auto select pattern high B */
+		0x00, /* auto select pattern low B */
+		0x44, /* memory access time B */
+		0x00, /* invert input B */
+		0x00, /* RFU */
+		0x00, /* RFU */
+		0x00, /* auto select mask high Ext */
+		0x00, /* auto select mask low Ext */
+		0x00, /* auto select pattern high Ext */
+		0x00, /* auto select pattern low Ext */
+		0x00, /* RFU */
+		0x02, /* destination - module A */
+		0x01, /* power on (use it like store place) */
+		0x00, /* RFU */
+		0x00, /* int status read only */
+		0x01, /* all int unmasked */
+		0x04, /* int config */
+		0x00, /* USCG1 */
+		0x04, /* ack active low */
+		0x00, /* LOCK = 0 */
+		0x33, /* serial mode, rising in, rising out, MSB first*/
+		0x31, /* syncronization */
+	};
+	int ret;
+
+	ci_dbg_print("%s\n", __func__);
+	state = kzalloc(sizeof(struct netup_ci_state), GFP_KERNEL);
+	if (!state) {
+		ci_dbg_print("%s: Unable create CI structure!\n", __func__);
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	port->port_priv = state;
+
+	switch (port->nr) {
+	case 1:
+		state->ci_i2c_addr = 0x40;
+		mutex_init(&gpio_mutex);
+		break;
+	case 2:
+		state->ci_i2c_addr = 0x41;
+		break;
+	}
+
+	state->i2c_adap = &port->dev->i2c_bus[0].i2c_adap;
+	state->ca.owner = THIS_MODULE;
+	state->ca.read_attribute_mem = netup_ci_read_attribute_mem;
+	state->ca.write_attribute_mem = netup_ci_write_attribute_mem;
+	state->ca.read_cam_control = netup_ci_read_cam_ctl;
+	state->ca.write_cam_control = netup_ci_write_cam_ctl;
+	state->ca.slot_reset = netup_ci_slot_reset;
+	state->ca.slot_shutdown = netup_ci_slot_shutdown;
+	state->ca.slot_ts_enable = netup_ci_slot_ts_ctl;
+	state->ca.poll_slot_status = netup_poll_ci_slot_status;
+	state->ca.data = state;
+	state->priv = port;
+
+	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
+						0, &cimax_init[0], 34);
+	/* lock registers */
+	ret |= netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
+						0x1f, &cimax_init[0x18], 1);
+	/* power on slots */
+	ret |= netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
+						0x18, &cimax_init[0x18], 1);
+
+	if (0 != ret)
+		goto err;
+
+	ret = dvb_ca_en50221_init(&port->frontends.adapter,
+				   &state->ca,
+				   /* flags */ 0,
+				   /* n_slots */ 1);
+	if (0 != ret)
+		goto err;
+
+	INIT_WORK(&state->work, netup_read_ci_status);
+
+	ci_dbg_print("%s: CI initialized!\n", __func__);
+
+	return 0;
+err:
+	ci_dbg_print("%s: Cannot initialize CI: Error %d.\n", __func__, ret);
+	kfree(state);
+	return ret;
+}
+
+void netup_ci_exit(struct cx23885_tsport *port)
+{
+	struct netup_ci_state *state;
+
+	if (NULL == port)
+		return;
+
+	state = (struct netup_ci_state *)port->port_priv;
+	if (NULL == state)
+		return;
+
+	if (NULL == state->ca.data)
+		return;
+
+	dvb_ca_en50221_release(&state->ca);
+	kfree(state);
+}
diff --git a/drivers/media/video/cx23885/cimax2.h b/drivers/media/video/cx23885/cimax2.h
new file mode 100644
index 00000000000..518744a4c8a
--- /dev/null
+++ b/drivers/media/video/cx23885/cimax2.h
@@ -0,0 +1,47 @@
+/*
+ * cimax2.h
+ *
+ * CIMax(R) SP2 driver in conjunction with NetUp Dual DVB-S2 CI card
+ *
+ * Copyright (C) 2009 NetUP Inc.
+ * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
+ * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
+ *
+ * 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.
+ */
+
+#ifndef CIMAX2_H
+#define CIMAX2_H
+#include "dvb_ca_en50221.h"
+
+extern int netup_ci_read_attribute_mem(struct dvb_ca_en50221 *en50221,
+						int slot, int addr);
+extern int netup_ci_write_attribute_mem(struct dvb_ca_en50221 *en50221,
+						int slot, int addr, u8 data);
+extern int netup_ci_read_cam_ctl(struct dvb_ca_en50221 *en50221,
+						int slot, u8 addr);
+extern int netup_ci_write_cam_ctl(struct dvb_ca_en50221 *en50221,
+						int slot, u8 addr, u8 data);
+extern int netup_ci_slot_reset(struct dvb_ca_en50221 *en50221, int slot);
+extern int netup_ci_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot);
+extern int netup_ci_slot_ts_ctl(struct dvb_ca_en50221 *en50221, int slot);
+extern int netup_ci_slot_status(struct cx23885_dev *dev, u32 pci_status);
+extern int netup_poll_ci_slot_status(struct dvb_ca_en50221 *en50221,
+						int slot, int open);
+extern int netup_ci_init(struct cx23885_tsport *port);
+extern void netup_ci_exit(struct cx23885_tsport *port);
+
+#endif