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path: root/drivers/media/video/cx25840/cx25840-core.c
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Diffstat (limited to 'drivers/media/video/cx25840/cx25840-core.c')
-rw-r--r--drivers/media/video/cx25840/cx25840-core.c98
1 files changed, 70 insertions, 28 deletions
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
index 67bda9f9a44b..15f191e170d2 100644
--- a/drivers/media/video/cx25840/cx25840-core.c
+++ b/drivers/media/video/cx25840/cx25840-core.c
@@ -34,6 +34,7 @@
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/i2c.h>
+#include <linux/delay.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
#include <media/cx25840.h>
@@ -133,7 +134,9 @@ static void init_dll1(struct i2c_client *client)
cx25840_write(client, 0x159, 0x23);
cx25840_write(client, 0x15a, 0x87);
cx25840_write(client, 0x15b, 0x06);
+ udelay(10);
cx25840_write(client, 0x159, 0xe1);
+ udelay(10);
cx25840_write(client, 0x15a, 0x86);
cx25840_write(client, 0x159, 0xe0);
cx25840_write(client, 0x159, 0xe1);
@@ -147,6 +150,7 @@ static void init_dll2(struct i2c_client *client)
cx25840_write(client, 0x15d, 0xe3);
cx25840_write(client, 0x15e, 0x86);
cx25840_write(client, 0x15f, 0x06);
+ udelay(10);
cx25840_write(client, 0x15d, 0xe1);
cx25840_write(client, 0x15d, 0xe0);
cx25840_write(client, 0x15d, 0xe1);
@@ -165,9 +169,7 @@ static void cx25836_initialize(struct i2c_client *client)
/* 3c. */
cx25840_and_or(client, 0x159, ~0x02, 0x02);
/* 3d. */
- /* There should be a 10-us delay here, but since the
- i2c bus already has a 10-us delay we don't need to do
- anything */
+ udelay(10);
/* 3e. */
cx25840_and_or(client, 0x159, ~0x02, 0x00);
/* 3f. */
@@ -179,9 +181,18 @@ static void cx25836_initialize(struct i2c_client *client)
cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
}
-static void cx25840_initialize(struct i2c_client *client, int loadfw)
+static void cx25840_work_handler(struct work_struct *work)
{
+ struct cx25840_state *state = container_of(work, struct cx25840_state, fw_work);
+ cx25840_loadfw(state->c);
+ wake_up(&state->fw_wait);
+}
+
+static void cx25840_initialize(struct i2c_client *client)
+{
+ DEFINE_WAIT(wait);
struct cx25840_state *state = i2c_get_clientdata(client);
+ struct workqueue_struct *q;
/* datasheet startup in numbered steps, refer to page 3-77 */
/* 2. */
@@ -197,8 +208,19 @@ static void cx25840_initialize(struct i2c_client *client, int loadfw)
cx25840_write(client, 0x13c, 0x01);
cx25840_write(client, 0x13c, 0x00);
/* 5. */
- if (loadfw)
- cx25840_loadfw(client);
+ /* Do the firmware load in a work handler to prevent.
+ Otherwise the kernel is blocked waiting for the
+ bit-banging i2c interface to finish uploading the
+ firmware. */
+ INIT_WORK(&state->fw_work, cx25840_work_handler);
+ init_waitqueue_head(&state->fw_wait);
+ q = create_singlethread_workqueue("cx25840_fw");
+ prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
+ queue_work(q, &state->fw_work);
+ schedule();
+ finish_wait(&state->fw_wait, &wait);
+ destroy_workqueue(q);
+
/* 6. */
cx25840_write(client, 0x115, 0x8c);
cx25840_write(client, 0x116, 0x07);
@@ -251,8 +273,13 @@ static void input_change(struct i2c_client *client)
}
cx25840_and_or(client, 0x401, ~0x60, 0);
cx25840_and_or(client, 0x401, ~0x60, 0x60);
+ cx25840_and_or(client, 0x810, ~0x01, 1);
- if (std & V4L2_STD_525_60) {
+ if (state->radio) {
+ cx25840_write(client, 0x808, 0xf9);
+ cx25840_write(client, 0x80b, 0x00);
+ }
+ else if (std & V4L2_STD_525_60) {
/* Certain Hauppauge PVR150 models have a hardware bug
that causes audio to drop out. For these models the
audio standard must be set explicitly.
@@ -281,11 +308,7 @@ static void input_change(struct i2c_client *client)
cx25840_write(client, 0x80b, 0x10);
}
- if (cx25840_read(client, 0x803) & 0x10) {
- /* restart audio decoder microcontroller */
- cx25840_and_or(client, 0x803, ~0x10, 0x00);
- cx25840_and_or(client, 0x803, ~0x10, 0x10);
- }
+ cx25840_and_or(client, 0x810, ~0x01, 0);
}
static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
@@ -625,6 +648,22 @@ static int cx25840_command(struct i2c_client *client, unsigned int cmd,
struct v4l2_tuner *vt = arg;
struct v4l2_routing *route = arg;
+ /* ignore these commands */
+ switch (cmd) {
+ case TUNER_SET_TYPE_ADDR:
+ return 0;
+ }
+
+ if (!state->is_initialized) {
+ v4l_dbg(1, cx25840_debug, client, "cmd %08x triggered fw load\n", cmd);
+ /* initialize on first use */
+ state->is_initialized = 1;
+ if (state->is_cx25836)
+ cx25836_initialize(client);
+ else
+ cx25840_initialize(client);
+ }
+
switch (cmd) {
#ifdef CONFIG_VIDEO_ADV_DEBUG
/* ioctls to allow direct access to the
@@ -825,7 +864,7 @@ static int cx25840_command(struct i2c_client *client, unsigned int cmd,
if (state->is_cx25836)
cx25836_initialize(client);
else
- cx25840_initialize(client, 0);
+ cx25840_initialize(client);
break;
case VIDIOC_G_CHIP_IDENT:
@@ -856,17 +895,16 @@ static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
return 0;
- state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
- if (state == 0)
+ client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
+ if (client == 0)
return -ENOMEM;
- client = &state->c;
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver_cx25840;
snprintf(client->name, sizeof(client->name) - 1, "cx25840");
- v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
+ v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1);
device_id = cx25840_read(client, 0x101) << 8;
device_id |= cx25840_read(client, 0x100);
@@ -875,42 +913,44 @@ static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
* 0x83 for the cx2583x and 0x84 for the cx2584x */
if ((device_id & 0xff00) == 0x8300) {
id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
- state->is_cx25836 = 1;
}
else if ((device_id & 0xff00) == 0x8400) {
id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
- state->is_cx25836 = 0;
}
else {
v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
- kfree(state);
+ kfree(client);
return 0;
}
+ state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
+ if (state == NULL) {
+ kfree(client);
+ return -ENOMEM;
+ }
+
/* Note: revision '(device_id & 0x0f) == 2' was never built. The
marking skips from 0x1 == 22 to 0x3 == 23. */
v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
(device_id & 0xfff0) >> 4,
(device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
- address << 1, adapter->name);
+ client->addr << 1, client->adapter->name);
i2c_set_clientdata(client, state);
+ state->c = client;
+ state->is_cx25836 = ((device_id & 0xff00) == 0x8300);
state->vid_input = CX25840_COMPOSITE7;
state->aud_input = CX25840_AUDIO8;
state->audclk_freq = 48000;
state->pvr150_workaround = 0;
state->audmode = V4L2_TUNER_MODE_LANG1;
+ state->unmute_volume = -1;
state->vbi_line_offset = 8;
state->id = id;
state->rev = device_id;
i2c_attach_client(client);
- if (state->is_cx25836)
- cx25836_initialize(client);
- else
- cx25840_initialize(client, 1);
-
return 0;
}
@@ -932,6 +972,7 @@ static int cx25840_detach_client(struct i2c_client *client)
}
kfree(state);
+ kfree(client);
return 0;
}
@@ -1056,9 +1097,10 @@ static void log_audio_status(struct i2c_client *client)
}
v4l_info(client, "Detected audio standard: %s\n", p);
v4l_info(client, "Audio muted: %s\n",
- (mute_ctl & 0x2) ? "yes" : "no");
+ (state->unmute_volume >= 0) ? "yes" : "no");
v4l_info(client, "Audio microcontroller: %s\n",
- (download_ctl & 0x10) ? "running" : "stopped");
+ (download_ctl & 0x10) ?
+ ((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
switch (audio_config >> 4) {
case 0x00: p = "undefined"; break;
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