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Kernel: Clean up AC'97 driver code style

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* Remove braces from single-line conditionals
* Use aggregate initialization style for member variables
This commit is contained in:
Jelle Raaijmakers 2022-02-26 19:19:06 +01:00 • committed by Andreas Kling
parent ee64279958
commit e2891e9aa4
2 changed files with 13 additions and 16 deletions
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15
Kernel/Devices/Audio/AC97.cpp
View file

@ -61,11 +61,10 @@ bool AC97::handle_irq(RegisterState const&)
pcm_out_status_register.out(pcm_out_status);
// Stop the DMA engine if we're through with the buffer and no one is waiting
if (is_dma_halted && m_irq_queue.is_empty()) {
if (is_dma_halted && m_irq_queue.is_empty())
reset_pcm_out();
} else {
else
m_irq_queue.wake_all();
}
return true;
}
@ -187,9 +186,9 @@ ErrorOr<size_t> AC97::write(size_t channel_index, UserOrKernelBuffer const& data
if (channel_index != 0)
return Error::from_errno(ENODEV);
if (!m_output_buffer) {
if (!m_output_buffer)
m_output_buffer = TRY(MM.allocate_dma_buffer_pages(m_output_buffer_page_count * PAGE_SIZE, "AC97 Output buffer"sv, Memory::Region::Access::Write));
}
if (!m_buffer_descriptor_list) {
size_t buffer_descriptor_list_size = buffer_descriptor_list_max_entries * sizeof(BufferDescriptorListEntry);
buffer_descriptor_list_size = TRY(Memory::page_round_up(buffer_descriptor_list_size));
@ -236,9 +235,8 @@ ErrorOr<void> AC97::write_single_buffer(UserOrKernelBuffer const& data, size_t o
// Copy data from userspace into one of our buffers
TRY(data.read(m_output_buffer->vaddr_from_page_index(m_output_buffer_page_index).as_ptr(), offset, length));
if (!m_pcm_out_channel.dma_running()) {
if (!m_pcm_out_channel.dma_running())
reset_pcm_out();
}
// Write the next entry to the buffer descriptor list
u16 number_of_samples = length / sizeof(u16);
@ -250,9 +248,8 @@ ErrorOr<void> AC97::write_single_buffer(UserOrKernelBuffer const& data, size_t o
auto buffer_address = static_cast<u32>(m_buffer_descriptor_list->physical_page(0)->paddr().get());
m_pcm_out_channel.set_last_valid_index(buffer_address, m_buffer_descriptor_list_index);
if (!m_pcm_out_channel.dma_running()) {
if (!m_pcm_out_channel.dma_running())
m_pcm_out_channel.start_dma();
}
m_output_buffer_page_index = (m_output_buffer_page_index + 1) % m_output_buffer_page_count;
m_buffer_descriptor_list_index = (m_buffer_descriptor_list_index + 1) % buffer_descriptor_list_max_entries;

14
Kernel/Devices/Audio/AC97.h
View file

@ -135,7 +135,7 @@ private:
private:
IOAddress m_channel_base;
AC97& m_device;
bool m_dma_running = false;
bool m_dma_running { false };
StringView m_name;
};
@ -160,17 +160,17 @@ private:
virtual ErrorOr<u32> get_pcm_output_sample_rate(size_t channel_index) override;
OwnPtr<Memory::Region> m_buffer_descriptor_list;
u8 m_buffer_descriptor_list_index = 0;
bool m_double_rate_pcm_enabled = false;
u8 m_buffer_descriptor_list_index { 0 };
bool m_double_rate_pcm_enabled { false };
IOAddress m_io_mixer_base;
IOAddress m_io_bus_base;
WaitQueue m_irq_queue;
OwnPtr<Memory::Region> m_output_buffer;
u8 m_output_buffer_page_count = 4;
u8 m_output_buffer_page_index = 0;
u8 m_output_buffer_page_count { 4 };
u8 m_output_buffer_page_index { 0 };
AC97Channel m_pcm_out_channel;
u32 m_sample_rate = 0;
bool m_variable_rate_pcm_supported = false;
u32 m_sample_rate { 0 };
bool m_variable_rate_pcm_supported { false };
RefPtr<AudioChannel> m_audio_channel;
};