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path: root/drivers/media/pci/cx23885/cimax2.c
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Diffstat (limited to 'drivers/media/pci/cx23885/cimax2.c')
-rw-r--r--drivers/media/pci/cx23885/cimax2.c533
1 files changed, 533 insertions, 0 deletions
diff --git a/drivers/media/pci/cx23885/cimax2.c b/drivers/media/pci/cx23885/cimax2.c
new file mode 100644
index 000000000..06e41f920
--- /dev/null
+++ b/drivers/media/pci/cx23885/cimax2.c
@@ -0,0 +1,533 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 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>
+ */
+
+#include "cx23885.h"
+#include "cimax2.h"
+#include <media/dvb_ca_en50221.h>
+
+/* Max transfer size done by I2C transfer functions */
+#define MAX_XFER_SIZE 64
+
+/**** 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
+
+#define NETUP_IRQ_DETAM 0x1
+#define NETUP_IRQ_IRQAM 0x4
+
+static unsigned int ci_dbg;
+module_param(ci_dbg, int, 0644);
+MODULE_PARM_DESC(ci_dbg, "Enable CI debugging");
+
+static unsigned int ci_irq_enable;
+module_param(ci_irq_enable, int, 0644);
+MODULE_PARM_DESC(ci_irq_enable, "Enable IRQ from CAM");
+
+#define ci_dbg_print(fmt, args...) \
+ do { \
+ if (ci_dbg) \
+ printk(KERN_DEBUG pr_fmt("%s: " fmt), \
+ __func__, ##args); \
+ } while (0)
+
+#define ci_irq_flags() (ci_irq_enable ? NETUP_IRQ_IRQAM : 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;
+ u8 current_irq_mode;
+ int current_ci_flag;
+ unsigned long next_status_checked_time;
+};
+
+
+static 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;
+}
+
+static int netup_write_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
+ u8 *buf, int len)
+{
+ int ret;
+ u8 buffer[MAX_XFER_SIZE];
+
+ struct i2c_msg msg = {
+ .addr = addr,
+ .flags = 0,
+ .buf = &buffer[0],
+ .len = len + 1
+ };
+
+ if (1 + len > sizeof(buffer)) {
+ pr_warn("%s: i2c wr reg=%04x: len=%d is too big!\n",
+ KBUILD_MODNAME, reg, len);
+ return -EINVAL;
+ }
+
+ 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;
+}
+
+static 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;
+}
+
+static int netup_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot,
+ u8 flag, u8 read, int 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;
+
+ if (state->current_ci_flag != flag) {
+ 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;
+ }
+ state->current_ci_flag = flag;
+
+ mutex_lock(&dev->gpio_lock);
+
+ /* 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(&dev->gpio_lock);
+
+ if (!read)
+ if (mem < 0)
+ return -EREMOTEIO;
+
+ ci_dbg_print("%s: %s: chipaddr=[0x%x] addr=[0x%02x], %s=%x\n", __func__,
+ (read) ? "read" : "write", state->ci_i2c_addr, 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;
+}
+
+static int netup_ci_set_irq(struct dvb_ca_en50221 *en50221, u8 irq_mode)
+{
+ struct netup_ci_state *state = en50221->data;
+ int ret;
+
+ if (irq_mode == state->current_irq_mode)
+ return 0;
+
+ ci_dbg_print("%s: chipaddr=[0x%x] setting ci IRQ to [0x%x] \n",
+ __func__, state->ci_i2c_addr, irq_mode);
+ ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
+ 0x1b, &irq_mode, 1);
+
+ if (ret != 0)
+ return ret;
+
+ state->current_irq_mode = irq_mode;
+
+ return 0;
+}
+
+int netup_ci_slot_ts_ctl(struct dvb_ca_en50221 *en50221, int slot)
+{
+ struct netup_ci_state *state = en50221->data;
+ u8 buf;
+
+ if (0 != slot)
+ return -EINVAL;
+
+ netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
+ 0, &buf, 1);
+ buf |= 0x60;
+
+ 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;
+
+ /* CAM module IRQ processing. fast operation */
+ dvb_ca_en50221_frda_irq(&state->ca, 0);
+
+ /* CAM module INSERT/REMOVE processing. slow operation because of i2c
+ * transfers */
+ if (time_after(jiffies, state->next_status_checked_time)
+ || !state->status) {
+ ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
+ 0, &buf[0], 33);
+
+ state->next_status_checked_time = jiffies
+ + msecs_to_jiffies(1000);
+
+ 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[0]);
+
+
+ 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;
+
+ ci_dbg_print("%s:\n", __func__);
+
+ if (0 == (pci_status & (PCI_MSK_GPIO0 | PCI_MSK_GPIO1)))
+ return 0;
+
+ if (pci_status & PCI_MSK_GPIO0) {
+ port = &dev->ts1;
+ state = port->port_priv;
+ schedule_work(&state->work);
+ ci_dbg_print("%s: Wakeup CI0\n", __func__);
+ }
+
+ if (pci_status & PCI_MSK_GPIO1) {
+ port = &dev->ts2;
+ state = port->port_priv;
+ schedule_work(&state->work);
+ ci_dbg_print("%s: Wakeup CI1\n", __func__);
+ }
+
+ 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;
+
+ netup_ci_set_irq(en50221, open ? (NETUP_IRQ_DETAM | ci_irq_flags())
+ : NETUP_IRQ_DETAM);
+
+ 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 */
+ ci_irq_flags() | NETUP_IRQ_DETAM, /* DETAM, IRQAM unmasked */
+ 0x05, /* EXTINT=active-high, INT=push-pull */
+ 0x00, /* USCG1 */
+ 0x04, /* ack active low */
+ 0x00, /* LOCK = 0 */
+ 0x33, /* serial mode, rising in, rising out, MSB first*/
+ 0x31, /* synchronization */
+ };
+ 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;
+ 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;
+ state->current_irq_mode = ci_irq_flags() | NETUP_IRQ_DETAM;
+
+ 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);
+ schedule_work(&state->work);
+
+ 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);
+}
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