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authorAndy Walls <awalls@radix.net>2009-11-21 11:41:33 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-12-05 18:41:56 -0200
commitbfbde8ee56d4a19e2d36a5a24b6dbfd298298bf1 (patch)
treea51cf805259a3c8661d6261657ed061dc1992d57 /drivers/media/video/ivtv
parentf412d36a8c9f8e40e057b71e80d534ac388e903e (diff)
V4L/DVB (13443): ivtv: Defer legacy I2C IR probing until after setup of known I2C devices
This avoids collisions of legacy IR controller probing with known I2C devices in the card definitions in ivtv-cards.c. I2C driver modules for device listed explicitly in a card definition should always take precedence over a probe guessing where and IR controller may be. Reviewed-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/ivtv')
-rw-r--r--drivers/media/video/ivtv/ivtv-driver.c3
-rw-r--r--drivers/media/video/ivtv/ivtv-i2c.c58
-rw-r--r--drivers/media/video/ivtv/ivtv-i2c.h1
3 files changed, 35 insertions, 27 deletions
diff --git a/drivers/media/video/ivtv/ivtv-driver.c b/drivers/media/video/ivtv/ivtv-driver.c
index 8330fb5c7eb..d14f94e254b 100644
--- a/drivers/media/video/ivtv/ivtv-driver.c
+++ b/drivers/media/video/ivtv/ivtv-driver.c
@@ -884,6 +884,9 @@ static void ivtv_load_and_init_modules(struct ivtv *itv)
itv->hw_flags |= device;
}
+ /* probe for legacy IR controllers that aren't in card definitions */
+ ivtv_i2c_new_ir_legacy(itv);
+
if (itv->card->hw_all & IVTV_HW_CX25840)
itv->sd_video = ivtv_find_hw(itv, IVTV_HW_CX25840);
else if (itv->card->hw_all & IVTV_HW_SAA717X)
diff --git a/drivers/media/video/ivtv/ivtv-i2c.c b/drivers/media/video/ivtv/ivtv-i2c.c
index d4cc3365038..71a8aa60b3f 100644
--- a/drivers/media/video/ivtv/ivtv-i2c.c
+++ b/drivers/media/video/ivtv/ivtv-i2c.c
@@ -149,6 +149,36 @@ static const char * const hw_devicenames[] = {
"gpio",
};
+/* Instantiate the IR receiver device using probing -- undesirable */
+struct i2c_client *ivtv_i2c_new_ir_legacy(struct ivtv *itv)
+{
+ struct i2c_board_info info;
+ /*
+ * The external IR receiver is at i2c address 0x34.
+ * The internal IR receiver is at i2c address 0x30.
+ *
+ * In theory, both can be fitted, and Hauppauge suggests an external
+ * overrides an internal. That's why we probe 0x1a (~0x34) first. CB
+ *
+ * Some of these addresses we probe may collide with other i2c address
+ * allocations, so this function must be called after all other i2c
+ * devices we care about are registered.
+ */
+ const unsigned short addr_list[] = {
+ 0x1a, /* Hauppauge IR external - collides with WM8739 */
+ 0x18, /* Hauppauge IR internal */
+ 0x71, /* Hauppauge IR (PVR150) */
+ 0x64, /* Pixelview IR */
+ 0x30, /* KNC ONE IR */
+ 0x6b, /* Adaptec IR */
+ I2C_CLIENT_END
+ };
+
+ memset(&info, 0, sizeof(struct i2c_board_info));
+ strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
+ return i2c_new_probed_device(&itv->i2c_adap, &info, addr_list);
+}
+
int ivtv_i2c_register(struct ivtv *itv, unsigned idx)
{
struct v4l2_subdev *sd;
@@ -579,7 +609,7 @@ static struct i2c_client ivtv_i2c_client_template = {
.name = "ivtv internal",
};
-/* init + register i2c adapter + instantiate IR receiver */
+/* init + register i2c adapter */
int init_ivtv_i2c(struct ivtv *itv)
{
int retval;
@@ -626,32 +656,6 @@ int init_ivtv_i2c(struct ivtv *itv)
else
retval = i2c_bit_add_bus(&itv->i2c_adap);
- /* Instantiate the IR receiver device, if present */
- if (retval == 0) {
- struct i2c_board_info info;
- /* The external IR receiver is at i2c address 0x34 (0x35 for
- reads). Future Hauppauge cards will have an internal
- receiver at 0x30 (0x31 for reads). In theory, both can be
- fitted, and Hauppauge suggest an external overrides an
- internal.
-
- That's why we probe 0x1a (~0x34) first. CB
- */
- const unsigned short addr_list[] = {
- 0x1a, /* Hauppauge IR external */
- 0x18, /* Hauppauge IR internal */
- 0x71, /* Hauppauge IR (PVR150) */
- 0x64, /* Pixelview IR */
- 0x30, /* KNC ONE IR */
- 0x6b, /* Adaptec IR */
- I2C_CLIENT_END
- };
-
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
- i2c_new_probed_device(&itv->i2c_adap, &info, addr_list);
- }
-
return retval;
}
diff --git a/drivers/media/video/ivtv/ivtv-i2c.h b/drivers/media/video/ivtv/ivtv-i2c.h
index 396928a06a5..9332920ca4f 100644
--- a/drivers/media/video/ivtv/ivtv-i2c.h
+++ b/drivers/media/video/ivtv/ivtv-i2c.h
@@ -21,6 +21,7 @@
#ifndef IVTV_I2C_H
#define IVTV_I2C_H
+struct i2c_client *ivtv_i2c_new_ir_legacy(struct ivtv *itv);
int ivtv_i2c_register(struct ivtv *itv, unsigned idx);
struct v4l2_subdev *ivtv_find_hw(struct ivtv *itv, u32 hw);