Add CI support for DVBSky T980C card. The new host device independent CIMaX SP2
I2C driver was used to implement it.
IRQ handling is not implemented at this point. It could be used to detect the
CAM insertion/removal instantly.
Signed-off-by: Olli Salonen <olli.salo...@iki.fi>
---
drivers/media/pci/cx23885/cx23885-dvb.c | 106 +++++++++++++++++++++++++++++++-
1 file changed, 104 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/cx23885/cx23885-dvb.c
b/drivers/media/pci/cx23885/cx23885-dvb.c
index cc88997..31d51f8 100644
--- a/drivers/media/pci/cx23885/cx23885-dvb.c
+++ b/drivers/media/pci/cx23885/cx23885-dvb.c
@@ -71,6 +71,7 @@
#include "si2165.h"
#include "si2168.h"
#include "si2157.h"
+#include "sp2.h"
#include "m88ds3103.h"
#include "m88ts2022.h"
@@ -616,6 +617,77 @@ static int dvbsky_t9580_set_voltage(struct dvb_frontend
*fe,
return 0;
}
+static int cx23885_sp2_ci_ctrl(void *priv, u8 read, int addr,
+ u8 data, int *mem)
+{
+ /* MC417 */
+ #define SP2_DATA 0x000000ff
+ #define SP2_WR 0x00008000
+ #define SP2_RD 0x00004000
+ #define SP2_ACK 0x00001000
+ #define SP2_ADHI 0x00000800
+ #define SP2_ADLO 0x00000400
+ #define SP2_CS1 0x00000200
+ #define SP2_CS0 0x00000100
+ #define SP2_EN_ALL 0x00001000
+ #define SP2_CTRL_OFF (SP2_CS1 | SP2_CS0 | SP2_WR | SP2_RD)
+
+ struct cx23885_tsport *port = priv;
+ struct cx23885_dev *dev = port->dev;
+ int ret;
+ int tmp;
+ unsigned long timeout;
+
+ mutex_lock(&dev->gpio_lock);
+
+ /* write addr */
+ cx_write(MC417_OEN, SP2_EN_ALL);
+ cx_write(MC417_RWD, SP2_CTRL_OFF |
+ SP2_ADLO | (0xff & addr));
+ cx_clear(MC417_RWD, SP2_ADLO);
+ cx_write(MC417_RWD, SP2_CTRL_OFF |
+ SP2_ADHI | (0xff & (addr >> 8)));
+ cx_clear(MC417_RWD, SP2_ADHI);
+
+ if (read)
+ /* data in */
+ cx_write(MC417_OEN, SP2_EN_ALL | SP2_DATA);
+ else
+ /* data out */
+ cx_write(MC417_RWD, SP2_CTRL_OFF | data);
+
+ /* chip select 0 */
+ cx_clear(MC417_RWD, SP2_CS0);
+
+ /* read/write */
+ cx_clear(MC417_RWD, (read) ? SP2_RD : SP2_WR);
+
+ /* wait for a maximum of 1 msec */
+ timeout = jiffies + msecs_to_jiffies(1);
+ while (!time_after(jiffies, timeout)) {
+ tmp = cx_read(MC417_RWD);
+ if ((tmp & SP2_ACK) == 0)
+ break;
+ usleep_range(50, 100);
+ }
+
+ cx_set(MC417_RWD, SP2_CTRL_OFF);
+ *mem = tmp & 0xff;
+
+ mutex_unlock(&dev->gpio_lock);
+
+ if (!read) {
+ if (*mem < 0) {
+ ret = -EREMOTEIO;
+ goto err;
+ }
+ }
+
+ return 0;
+err:
+ return ret;
+}
+
static int cx23885_dvb_set_frontend(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
@@ -944,11 +1016,11 @@ static int dvb_register(struct cx23885_tsport *port)
struct vb2_dvb_frontend *fe0, *fe1 = NULL;
struct si2168_config si2168_config;
struct si2157_config si2157_config;
+ struct sp2_config sp2_config;
struct m88ts2022_config m88ts2022_config;
struct i2c_board_info info;
struct i2c_adapter *adapter;
- struct i2c_client *client_demod;
- struct i2c_client *client_tuner;
+ struct i2c_client *client_demod, *client_tuner, *client_ci;
int mfe_shared = 0; /* bus not shared by default */
int ret;
@@ -1683,6 +1755,7 @@ static int dvb_register(struct cx23885_tsport *port)
break;
case CX23885_BOARD_DVBSKY_T980C:
i2c_bus = &dev->i2c_bus[1];
+ i2c_bus2 = &dev->i2c_bus[0];
/* attach frontend */
memset(&si2168_config, 0, sizeof(si2168_config));
@@ -1820,6 +1893,35 @@ static int dvb_register(struct cx23885_tsport *port)
case CX23885_BOARD_DVBSKY_T980C: {
u8 eeprom[256]; /* 24C02 i2c eeprom */
+ /* attach CI */
+ memset(&sp2_config, 0, sizeof(sp2_config));
+ sp2_config.dvb_adap = &port->frontends.adapter;
+ sp2_config.priv = port;
+ sp2_config.ci_control = cx23885_sp2_ci_ctrl;
+ memset(&info, 0, sizeof(struct i2c_board_info));
+ strlcpy(info.type, "sp2", I2C_NAME_SIZE);
+ info.addr = 0x40;
+ info.platform_data = &sp2_config;
+ request_module(info.type);
+ client_ci = i2c_new_device(&i2c_bus2->i2c_adap, &info);
+ if (client_ci == NULL ||
+ client_ci->dev.driver == NULL) {
+ module_put(client_tuner->dev.driver->owner);
+ i2c_unregister_device(client_tuner);
+ module_put(client_demod->dev.driver->owner);
+ i2c_unregister_device(client_demod);
+ goto frontend_detach;
+ }
+ if (!try_module_get(client_ci->dev.driver->owner)) {
+ i2c_unregister_device(client_ci);
+ module_put(client_tuner->dev.driver->owner);
+ i2c_unregister_device(client_tuner);
+ module_put(client_demod->dev.driver->owner);
+ i2c_unregister_device(client_demod);
+ goto frontend_detach;
+ }
+ port->i2c_client_ci = client_ci;
+
if (port->nr != 1)
break;
--
1.9.1
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