void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev)
{
if (dev->_audio_is_running)
cx25821_stop_upstream_audio(dev);
cx25821_free_memory_audio(dev);
}
static int cx25821_audio_upstream_buffer_prepare(struct cx25821_dev *dev,
struct sram_channel *sram_ch,
int bpl)
{
int ret = 0;
dma_addr_t dma_addr;
dma_addr_t data_dma_addr;
cx25821_free_memory_audio(dev);
dev->_risc_virt_addr =
pci_alloc_consistent(dev->pci, dev->audio_upstream_riscbuf_size,
&dma_addr);
dev->_risc_virt_start_addr = dev->_risc_virt_addr;
dev->_risc_phys_start_addr = dma_addr;
dev->_risc_phys_addr = dma_addr;
dev->_audiorisc_size = dev->audio_upstream_riscbuf_size;
if (!dev->_risc_virt_addr) {
printk
("cx25821 ERROR: pci_alloc_consistent() FAILED to allocate memory for RISC program! Returning.\n");
return -ENOMEM;
}
//Clear out memory at address
memset(dev->_risc_virt_addr, 0, dev->_audiorisc_size);
//For Audio Data buffer allocation
dev->_audiodata_buf_virt_addr =
pci_alloc_consistent(dev->pci, dev->audio_upstream_databuf_size,
&data_dma_addr);
dev->_audiodata_buf_phys_addr = data_dma_addr;
dev->_audiodata_buf_size = dev->audio_upstream_databuf_size;
if (!dev->_audiodata_buf_virt_addr) {
printk
("cx25821 ERROR: pci_alloc_consistent() FAILED to allocate memory for data buffer! Returning. \n");
return -ENOMEM;
}
//Clear out memory at address
memset(dev->_audiodata_buf_virt_addr, 0, dev->_audiodata_buf_size);
ret = cx25821_openfile_audio(dev, sram_ch);
if (ret < 0)
return ret;
//Creating RISC programs
ret =
cx25821_risc_buffer_upstream_audio(dev, dev->pci, bpl,
dev->_audio_lines_count);
if (ret < 0) {
printk(KERN_DEBUG
"cx25821 ERROR creating audio upstream RISC programs! \n");
goto error;
}
return 0;
error:
return ret;
}
