From 3299de9558687ec02b3b9fae1af639844c46ea4b Mon Sep 17 00:00:00 2001 From: Rafał Miłecki Date: Mon, 14 May 2012 21:25:57 +0200 Subject: drm/radeon/hdmi: compile audio status in 1 function MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This optmizes calls, registers reads and assignments. Signed-off-by: Rafał Miłecki Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/r600_audio.c | 135 +++++++++++++++--------------------- 1 file changed, 57 insertions(+), 78 deletions(-) (limited to 'drivers/gpu/drm/radeon/r600_audio.c') diff --git a/drivers/gpu/drm/radeon/r600_audio.c b/drivers/gpu/drm/radeon/r600_audio.c index b5a602e71c12..7c4fa77f018f 100644 --- a/drivers/gpu/drm/radeon/r600_audio.c +++ b/drivers/gpu/drm/radeon/r600_audio.c @@ -63,67 +63,56 @@ static int r600_audio_chipset_supported(struct radeon_device *rdev) || rdev->family == CHIP_RS740; } -/* - * current number of channels - */ -int r600_audio_channels(struct radeon_device *rdev) +struct r600_audio r600_audio_status(struct radeon_device *rdev) { - return (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0x7) + 1; -} + struct r600_audio status; + uint32_t value; -/* - * current bits per sample - */ -int r600_audio_bits_per_sample(struct radeon_device *rdev) -{ - uint32_t value = (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0xF0) >> 4; - switch (value) { - case 0x0: return 8; - case 0x1: return 16; - case 0x2: return 20; - case 0x3: return 24; - case 0x4: return 32; - } + value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL); - dev_err(rdev->dev, "Unknown bits per sample 0x%x using 16 instead\n", - (int)value); + /* number of channels */ + status.channels = (value & 0x7) + 1; - return 16; -} - -/* - * current sampling rate in HZ - */ -int r600_audio_rate(struct radeon_device *rdev) -{ - uint32_t value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL); - uint32_t result; + /* bits per sample */ + switch ((value & 0xF0) >> 4) { + case 0x0: + status.bits_per_sample = 8; + break; + case 0x1: + status.bits_per_sample = 16; + break; + case 0x2: + status.bits_per_sample = 20; + break; + case 0x3: + status.bits_per_sample = 24; + break; + case 0x4: + status.bits_per_sample = 32; + break; + default: + dev_err(rdev->dev, "Unknown bits per sample 0x%x, using 16\n", + (int)value); + status.bits_per_sample = 16; + } + /* current sampling rate in HZ */ if (value & 0x4000) - result = 44100; + status.rate = 44100; else - result = 48000; + status.rate = 48000; + status.rate *= ((value >> 11) & 0x7) + 1; + status.rate /= ((value >> 8) & 0x7) + 1; - result *= ((value >> 11) & 0x7) + 1; - result /= ((value >> 8) & 0x7) + 1; + value = RREG32(R600_AUDIO_STATUS_BITS); - return result; -} + /* iec 60958 status bits */ + status.status_bits = value & 0xff; -/* - * iec 60958 status bits - */ -uint8_t r600_audio_status_bits(struct radeon_device *rdev) -{ - return RREG32(R600_AUDIO_STATUS_BITS) & 0xff; -} + /* iec 60958 category code */ + status.category_code = (value >> 8) & 0xff; -/* - * iec 60958 category code - */ -uint8_t r600_audio_category_code(struct radeon_device *rdev) -{ - return (RREG32(R600_AUDIO_STATUS_BITS) >> 8) & 0xff; + return status; } /* @@ -134,33 +123,23 @@ void r600_audio_update_hdmi(struct work_struct *work) struct radeon_device *rdev = container_of(work, struct radeon_device, audio_work); struct drm_device *dev = rdev->ddev; - - int channels = r600_audio_channels(rdev); - int rate = r600_audio_rate(rdev); - int bps = r600_audio_bits_per_sample(rdev); - uint8_t status_bits = r600_audio_status_bits(rdev); - uint8_t category_code = r600_audio_category_code(rdev); + struct r600_audio audio_status = r600_audio_status(rdev); struct drm_encoder *encoder; - int changes = 0; - - changes |= channels != rdev->audio.channels; - changes |= rate != rdev->audio.rate; - changes |= bps != rdev->audio.bits_per_sample; - changes |= status_bits != rdev->audio.status_bits; - changes |= category_code != rdev->audio.category_code; - - if (changes) { - rdev->audio.channels = channels; - rdev->audio.rate = rate; - rdev->audio.bits_per_sample = bps; - rdev->audio.status_bits = status_bits; - rdev->audio.category_code = category_code; + bool changed = false; + + if (rdev->audio_status.channels != audio_status.channels || + rdev->audio_status.rate != audio_status.rate || + rdev->audio_status.bits_per_sample != audio_status.bits_per_sample || + rdev->audio_status.status_bits != audio_status.status_bits || + rdev->audio_status.category_code != audio_status.category_code) { + rdev->audio_status = audio_status; + changed = true; } list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { if (!radeon_dig_encoder(encoder)) continue; - if (changes || r600_hdmi_buffer_status_changed(encoder)) + if (changed || r600_hdmi_buffer_status_changed(encoder)) r600_hdmi_update_audio_settings(encoder); } } @@ -182,7 +161,7 @@ static void r600_audio_engine_enable(struct radeon_device *rdev, bool enable) WREG32_P(R600_AUDIO_ENABLE, enable ? 0x81000000 : 0x0, ~0x81000000); } - rdev->audio.enabled = enable; + rdev->audio_enabled = enable; } /* @@ -195,11 +174,11 @@ int r600_audio_init(struct radeon_device *rdev) r600_audio_engine_enable(rdev, true); - rdev->audio.channels = -1; - rdev->audio.rate = -1; - rdev->audio.bits_per_sample = -1; - rdev->audio.status_bits = 0; - rdev->audio.category_code = 0; + rdev->audio_status.channels = -1; + rdev->audio_status.rate = -1; + rdev->audio_status.bits_per_sample = -1; + rdev->audio_status.status_bits = 0; + rdev->audio_status.category_code = 0; return 0; } @@ -268,7 +247,7 @@ void r600_audio_set_clock(struct drm_encoder *encoder, int clock) */ void r600_audio_fini(struct radeon_device *rdev) { - if (!rdev->audio.enabled) + if (!rdev->audio_enabled) return; r600_audio_engine_enable(rdev, false); -- cgit v1.2.3