diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-driver.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-driver.c | 72 |
1 files changed, 61 insertions, 11 deletions
diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c index 7f65a47f12e1..df60f27337cf 100644 --- a/drivers/media/video/cx18/cx18-driver.c +++ b/drivers/media/video/cx18/cx18-driver.c @@ -4,7 +4,7 @@ * Derived from ivtv-driver.c * * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> - * Copyright (C) 2008 Andy Walls <awalls@radix.net> + * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -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) { |