aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/cx18/cx18-driver.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/cx18/cx18-driver.c')
-rw-r--r--drivers/media/video/cx18/cx18-driver.c70
1 files changed, 60 insertions, 10 deletions
diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c
index 7f65a47f12e..c95a86ba33b 100644
--- a/drivers/media/video/cx18/cx18-driver.c
+++ b/drivers/media/video/cx18/cx18-driver.c
@@ -47,6 +47,10 @@
setting this to 1 you ensure that radio0 is now also radio1. */
int cx18_first_minor;
+/* Callback for registering extensions */
+int (*cx18_ext_init)(struct cx18 *);
+EXPORT_SYMBOL(cx18_ext_init);
+
/* add your revision and whatnot here */
static struct pci_device_id cx18_pci_tbl[] __devinitdata = {
{PCI_VENDOR_ID_CX, PCI_DEVICE_ID_CX23418,
@@ -91,7 +95,7 @@ static int enc_pcm_bufsize = CX18_DEFAULT_ENC_PCM_BUFSIZE;
static int enc_ts_bufs = -1;
static int enc_mpg_bufs = -1;
-static int enc_idx_bufs = -1;
+static int enc_idx_bufs = CX18_MAX_FW_MDLS_PER_STREAM;
static int enc_yuv_bufs = -1;
static int enc_vbi_bufs = -1;
static int enc_pcm_bufs = -1;
@@ -196,14 +200,17 @@ MODULE_PARM_DESC(enc_mpg_bufs,
"Number of encoder MPG buffers\n"
"\t\t\tDefault is computed from other enc_mpg_* parameters");
MODULE_PARM_DESC(enc_idx_buffers,
- "Encoder IDX buffer memory (MB). (enc_idx_bufs can override)\n"
- "\t\t\tDefault: " __stringify(CX18_DEFAULT_ENC_IDX_BUFFERS));
+ "(Deprecated) Encoder IDX buffer memory (MB)\n"
+ "\t\t\tIgnored, except 0 disables IDX buffer allocations\n"
+ "\t\t\tDefault: 1 [Enabled]");
MODULE_PARM_DESC(enc_idx_bufsize,
"Size of an encoder IDX buffer (kB)\n"
- "\t\t\tDefault: " __stringify(CX18_DEFAULT_ENC_IDX_BUFSIZE));
+ "\t\t\tAllowed values are multiples of 1.5 kB rounded up\n"
+ "\t\t\t(multiples of size required for 64 index entries)\n"
+ "\t\t\tDefault: 2");
MODULE_PARM_DESC(enc_idx_bufs,
"Number of encoder IDX buffers\n"
- "\t\t\tDefault is computed from other enc_idx_* parameters");
+ "\t\t\tDefault: " __stringify(CX18_MAX_FW_MDLS_PER_STREAM));
MODULE_PARM_DESC(enc_yuv_buffers,
"Encoder YUV buffer memory (MB). (enc_yuv_bufs can override)\n"
"\t\t\tDefault: " __stringify(CX18_DEFAULT_ENC_YUV_BUFFERS));
@@ -231,7 +238,8 @@ MODULE_PARM_DESC(enc_pcm_bufs,
"Number of encoder PCM buffers\n"
"\t\t\tDefault is computed from other enc_pcm_* parameters");
-MODULE_PARM_DESC(cx18_first_minor, "Set device node number assigned to first card");
+MODULE_PARM_DESC(cx18_first_minor,
+ "Set device node number assigned to first card");
MODULE_AUTHOR("Hans Verkuil");
MODULE_DESCRIPTION("CX23418 driver");
@@ -240,6 +248,28 @@ MODULE_LICENSE("GPL");
MODULE_VERSION(CX18_VERSION);
+#if defined(CONFIG_MODULES) && defined(MODULE)
+static void request_module_async(struct work_struct *work)
+{
+ struct cx18 *dev = container_of(work, struct cx18, request_module_wk);
+
+ /* Make sure cx18-alsa module is loaded */
+ request_module("cx18-alsa");
+
+ /* Initialize cx18-alsa for this instance of the cx18 device */
+ if (cx18_ext_init != NULL)
+ cx18_ext_init(dev);
+}
+
+static void request_modules(struct cx18 *dev)
+{
+ INIT_WORK(&dev->request_module_wk, request_module_async);
+ schedule_work(&dev->request_module_wk);
+}
+#else
+#define request_modules(dev)
+#endif /* CONFIG_MODULES */
+
/* Generic utility functions */
int cx18_msleep_timeout(unsigned int msecs, int intr)
{
@@ -501,7 +531,12 @@ static void cx18_process_options(struct cx18 *cx)
/*
* YUV is a special case where the stream_buf_size needs to be
* an integral multiple of 33.75 kB (storage for 32 screens
- * lines to maintain alignment in case of lost buffers
+ * lines to maintain alignment in case of lost buffers).
+ *
+ * IDX is a special case where the stream_buf_size should be
+ * an integral multiple of 1.5 kB (storage for 64 index entries
+ * to maintain alignment in case of lost buffers).
+ *
*/
if (i == CX18_ENC_STREAM_TYPE_YUV) {
cx->stream_buf_size[i] *= 1024;
@@ -511,15 +546,24 @@ static void cx18_process_options(struct cx18 *cx)
if (cx->stream_buf_size[i] < CX18_UNIT_ENC_YUV_BUFSIZE)
cx->stream_buf_size[i] =
CX18_UNIT_ENC_YUV_BUFSIZE;
+ } else if (i == CX18_ENC_STREAM_TYPE_IDX) {
+ cx->stream_buf_size[i] *= 1024;
+ cx->stream_buf_size[i] -=
+ (cx->stream_buf_size[i] % CX18_UNIT_ENC_IDX_BUFSIZE);
+
+ if (cx->stream_buf_size[i] < CX18_UNIT_ENC_IDX_BUFSIZE)
+ cx->stream_buf_size[i] =
+ CX18_UNIT_ENC_IDX_BUFSIZE;
}
/*
- * YUV is a special case where the stream_buf_size is
+ * YUV and IDX are special cases where the stream_buf_size is
* now in bytes.
* VBI is a special case where the stream_buf_size is fixed
* and already in bytes
*/
if (i == CX18_ENC_STREAM_TYPE_VBI ||
- i == CX18_ENC_STREAM_TYPE_YUV) {
+ i == CX18_ENC_STREAM_TYPE_YUV ||
+ i == CX18_ENC_STREAM_TYPE_IDX) {
if (cx->stream_buffers[i] < 0) {
cx->stream_buffers[i] =
cx->options.megabytes[i] * 1024 * 1024
@@ -1032,6 +1076,10 @@ static int __devinit cx18_probe(struct pci_dev *pci_dev,
}
CX18_INFO("Initialized card: %s\n", cx->card_name);
+
+ /* Load cx18 submodules (cx18-alsa) */
+ request_modules(cx);
+
return 0;
free_streams:
@@ -1220,6 +1268,7 @@ static void cx18_remove(struct pci_dev *pci_dev)
kfree(cx);
}
+
/* define a pci_driver for card detection */
static struct pci_driver cx18_pci_driver = {
.name = "cx18",
@@ -1230,7 +1279,8 @@ static struct pci_driver cx18_pci_driver = {
static int __init module_start(void)
{
- printk(KERN_INFO "cx18: Start initialization, version %s\n", CX18_VERSION);
+ printk(KERN_INFO "cx18: Start initialization, version %s\n",
+ CX18_VERSION);
/* Validate parameters */
if (cx18_first_minor < 0 || cx18_first_minor >= CX18_MAX_CARDS) {