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path: root/drivers/media/video/cx23885/cx23885-i2c.c
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Diffstat (limited to 'drivers/media/video/cx23885/cx23885-i2c.c')
-rw-r--r--drivers/media/video/cx23885/cx23885-i2c.c98
1 files changed, 76 insertions, 22 deletions
diff --git a/drivers/media/video/cx23885/cx23885-i2c.c b/drivers/media/video/cx23885/cx23885-i2c.c
index 71da528932df..92fe0bd37c84 100644
--- a/drivers/media/video/cx23885/cx23885-i2c.c
+++ b/drivers/media/video/cx23885/cx23885-i2c.c
@@ -29,7 +29,7 @@
#include <media/v4l2-common.h>
-static unsigned int i2c_debug = 0;
+static unsigned int i2c_debug;
module_param(i2c_debug, int, 0644);
MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
@@ -37,8 +37,10 @@ static unsigned int i2c_scan = 0;
module_param(i2c_scan, int, 0444);
MODULE_PARM_DESC(i2c_scan, "scan i2c bus at insmod time");
-#define dprintk(level,fmt, arg...) if (i2c_debug >= level) \
- printk(KERN_DEBUG "%s: " fmt, dev->name , ## arg)
+#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
@@ -77,14 +79,19 @@ static int i2c_wait_done(struct i2c_adapter *i2c_adap)
}
static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
- const struct i2c_msg *msg, int last)
+ const struct i2c_msg *msg, int joined_rlen)
{
struct cx23885_i2c *bus = i2c_adap->algo_data;
struct cx23885_dev *dev = bus->dev;
u32 wdata, addr, ctrl;
int retval, cnt;
- dprintk(1, "%s()\n", __FUNCTION__);
+ if (joined_rlen)
+ dprintk(1, "%s(msg->wlen=%d, nextmsg->rlen=%d)\n", __FUNCTION__,
+ msg->len, joined_rlen);
+ else
+ dprintk(1, "%s(msg->len=%d)\n", __FUNCTION__, msg->len);
+
/* Deal with i2c probe functions with zero payload */
if (msg->len == 0) {
cx_write(bus->reg_addr, msg->addr << 25);
@@ -106,6 +113,8 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
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);
@@ -127,8 +136,10 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
wdata = msg->buf[cnt];
ctrl = bus->i2c_period | (1 << 12) | (1 << 2);
- if (cnt < msg->len-1 || !last)
+ 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);
@@ -150,19 +161,22 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
eio:
retval = -EIO;
err:
- printk(" ERR: %d\n", retval);
+ if (i2c_debug)
+ printk(" ERR: %d\n", retval);
return retval;
}
static int i2c_readbytes(struct i2c_adapter *i2c_adap,
- const struct i2c_msg *msg, int last)
+ const struct i2c_msg *msg, int joined)
{
struct cx23885_i2c *bus = i2c_adap->algo_data;
struct cx23885_dev *dev = bus->dev;
u32 ctrl, cnt;
int retval;
- dprintk(1, "%s()\n", __FUNCTION__);
+
+ if (i2c_debug && !joined)
+ dprintk(1, "%s(msg->len=%d)\n", __FUNCTION__, msg->len);
/* Deal with i2c probe functions with zero payload */
if (msg->len == 0) {
@@ -178,11 +192,18 @@ static int i2c_readbytes(struct i2c_adapter *i2c_adap,
return 0;
}
+ if (i2c_debug) {
+ if (joined)
+ printk(" R");
+ else
+ printk(" <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 || !last)
+ if (cnt < msg->len - 1)
ctrl |= I2C_NOSTOP | I2C_EXTEND;
cx_write(bus->reg_addr, msg->addr << 25);
@@ -195,9 +216,7 @@ static int i2c_readbytes(struct i2c_adapter *i2c_adap,
goto eio;
msg->buf[cnt] = cx_read(bus->reg_rdata) & 0xff;
if (i2c_debug) {
- if (!(ctrl & I2C_NOSTOP))
- printk(" <R %02x", (msg->addr << 1) +1);
- printk(" =%02x", msg->buf[cnt]);
+ printk(" %02x", msg->buf[cnt]);
if (!(ctrl & I2C_NOSTOP))
printk(" >\n");
}
@@ -207,7 +226,8 @@ static int i2c_readbytes(struct i2c_adapter *i2c_adap,
eio:
retval = -EIO;
err:
- printk(" ERR: %d\n", retval);
+ if (i2c_debug)
+ printk(" ERR: %d\n", retval);
return retval;
}
@@ -225,15 +245,22 @@ static int i2c_xfer(struct i2c_adapter *i2c_adap,
__FUNCTION__, num, msgs[i].addr, msgs[i].len);
if (msgs[i].flags & I2C_M_RD) {
/* read */
- retval = i2c_readbytes(i2c_adap, &msgs[i], i+1 == num);
+ 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], i+1 == num);
- if (retval < 0)
- goto err;
+ retval = i2c_sendbytes(i2c_adap, &msgs[i], 0);
}
+ if (retval < 0)
+ goto err;
}
return num;
@@ -243,7 +270,9 @@ static int i2c_xfer(struct i2c_adapter *i2c_adap,
static int attach_inform(struct i2c_client *client)
{
- struct cx23885_dev *dev = i2c_get_adapdata(client->adapter);
+ struct cx23885_i2c *bus = i2c_get_adapdata(client->adapter);
+ struct cx23885_dev *dev = bus->dev;
+ struct tuner_setup tun_setup;
dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n",
client->driver->driver.name, client->addr, client->name);
@@ -251,6 +280,31 @@ static int attach_inform(struct i2c_client *client)
if (!client->driver->command)
return 0;
+ if (dev->tuner_type != UNSET) {
+
+ dprintk(1, "%s (tuner) i2c attach [addr=0x%x,client=%s]\n",
+ client->driver->driver.name, client->addr,
+ client->name);
+
+ if ((dev->tuner_addr == ADDR_UNSET) ||
+ (dev->tuner_addr == client->addr)) {
+
+ dprintk(1, "%s (tuner || addr UNSET)\n",
+ client->driver->driver.name);
+
+ dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n",
+ client->driver->driver.name,
+ client->addr, client->name);
+
+ tun_setup.mode_mask = T_ANALOG_TV;
+ tun_setup.type = dev->tuner_type;
+ tun_setup.addr = dev->tuner_addr;
+
+ client->driver->command(client, TUNER_SET_TYPE_ADDR,
+ &tun_setup);
+ }
+ }
+
return 0;
}
@@ -289,6 +343,7 @@ static struct i2c_adapter cx23885_i2c_adap_template = {
.owner = THIS_MODULE,
.id = I2C_HW_B_CX23885,
.algo = &cx23885_i2c_algo_template,
+ .class = I2C_CLASS_TV_ANALOG,
.client_register = attach_inform,
.client_unregister = detach_inform,
};
@@ -305,7 +360,7 @@ static char *i2c_devs[128] = {
[ 0x84 >> 1 ] = "tda8295",
[ 0xa0 >> 1 ] = "eeprom",
[ 0xc0 >> 1 ] = "tuner/mt2131/tda8275",
- [ 0xc2 >> 1 ] = "tuner/mt2131/tda8275",
+ [ 0xc2 >> 1 ] = "tuner/mt2131/tda8275/xc5000",
};
static void do_i2c_scan(char *name, struct i2c_client *c)
@@ -344,6 +399,7 @@ int cx23885_i2c_register(struct cx23885_i2c *bus)
bus->i2c_algo.data = bus;
bus->i2c_adap.algo_data = bus;
+ i2c_set_adapdata(&bus->i2c_adap, bus);
i2c_add_adapter(&bus->i2c_adap);
bus->i2c_client.adapter = &bus->i2c_adap;
@@ -366,8 +422,6 @@ int cx23885_i2c_unregister(struct cx23885_i2c *bus)
/* ----------------------------------------------------------------------- */
-EXPORT_SYMBOL(cx23885_call_i2c_clients);
-
/*
* Local variables:
* c-basic-offset: 8
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.