drm/radeon/kms: HDMI support for R600 KMS
Adding basic HDMI support for R600 KMS, ported from radeonhd ddx.
[airlied:- checkpatch cleanups]
Signed-off-by: Christian Koenig <deathsimple@vodafone.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/r600_audio.c b/drivers/gpu/drm/radeon/r600_audio.c
new file mode 100644
index 0000000..99e2c38
--- /dev/null
+++ b/drivers/gpu/drm/radeon/r600_audio.c
@@ -0,0 +1,267 @@
+/*
+ * Copyright 2008 Advanced Micro Devices, Inc.
+ * Copyright 2008 Red Hat Inc.
+ * Copyright 2009 Christian König.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Christian König
+ */
+#include "drmP.h"
+#include "radeon.h"
+#include "radeon_reg.h"
+#include "atom.h"
+
+#define AUDIO_TIMER_INTERVALL 100 /* 1/10 sekund should be enough */
+
+/*
+ * check if the chipset is supported
+ */
+static int r600_audio_chipset_supported(struct radeon_device *rdev)
+{
+ return rdev->family >= CHIP_R600
+ || rdev->family == CHIP_RS600
+ || rdev->family == CHIP_RS690
+ || rdev->family == CHIP_RS740;
+}
+
+/*
+ * current number of channels
+ */
+static int r600_audio_channels(struct radeon_device *rdev)
+{
+ return (RREG32(R600_AUDIO_RATE_BPS_CHANNEL) & 0x7) + 1;
+}
+
+/*
+ * current bits per sample
+ */
+static 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;
+ }
+
+ DRM_ERROR("Unknown bits per sample 0x%x using 16 instead.\n", (int)value);
+
+ return 16;
+}
+
+/*
+ * current sampling rate in HZ
+ */
+static int r600_audio_rate(struct radeon_device *rdev)
+{
+ uint32_t value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL);
+ uint32_t result;
+
+ if (value & 0x4000)
+ result = 44100;
+ else
+ result = 48000;
+
+ result *= ((value >> 11) & 0x7) + 1;
+ result /= ((value >> 8) & 0x7) + 1;
+
+ return result;
+}
+
+/*
+ * iec 60958 status bits
+ */
+static uint8_t r600_audio_status_bits(struct radeon_device *rdev)
+{
+ return RREG32(R600_AUDIO_STATUS_BITS) & 0xff;
+}
+
+/*
+ * iec 60958 category code
+ */
+static uint8_t r600_audio_category_code(struct radeon_device *rdev)
+{
+ return (RREG32(R600_AUDIO_STATUS_BITS) >> 8) & 0xff;
+}
+
+/*
+ * update all hdmi interfaces with current audio parameters
+ */
+static void r600_audio_update_hdmi(unsigned long param)
+{
+ struct radeon_device *rdev = (struct radeon_device *)param;
+ 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 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;
+ }
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ if (changes || r600_hdmi_buffer_status_changed(encoder))
+ r600_hdmi_update_audio_settings(
+ encoder, channels,
+ rate, bps, status_bits,
+ category_code);
+ }
+
+ mod_timer(&rdev->audio_timer,
+ jiffies + msecs_to_jiffies(AUDIO_TIMER_INTERVALL));
+}
+
+/*
+ * initialize the audio vars and register the update timer
+ */
+int r600_audio_init(struct radeon_device *rdev)
+{
+ if (!r600_audio_chipset_supported(rdev))
+ return 0;
+
+ DRM_INFO("%s audio support", radeon_audio ? "Enabling" : "Disabling");
+ WREG32_P(R600_AUDIO_ENABLE, radeon_audio ? 0x81000000 : 0x0, ~0x81000000);
+
+ rdev->audio_channels = -1;
+ rdev->audio_rate = -1;
+ rdev->audio_bits_per_sample = -1;
+ rdev->audio_status_bits = 0;
+ rdev->audio_category_code = 0;
+
+ setup_timer(
+ &rdev->audio_timer,
+ r600_audio_update_hdmi,
+ (unsigned long)rdev);
+
+ mod_timer(&rdev->audio_timer, jiffies + 1);
+
+ return 0;
+}
+
+/*
+ * determin how the encoders and audio interface is wired together
+ */
+int r600_audio_tmds_index(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct drm_encoder *other;
+
+ switch (radeon_encoder->encoder_id) {
+ case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
+ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
+ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
+ return 0;
+
+ case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
+ /* special case check if an TMDS1 is present */
+ list_for_each_entry(other, &dev->mode_config.encoder_list, head) {
+ if (to_radeon_encoder(other)->encoder_id ==
+ ENCODER_OBJECT_ID_INTERNAL_TMDS1)
+ return 1;
+ }
+ return 0;
+
+ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
+ case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
+ return 1;
+
+ default:
+ DRM_ERROR("Unsupported encoder type 0x%02X\n",
+ radeon_encoder->encoder_id);
+ return -1;
+ }
+}
+
+/*
+ * atach the audio codec to the clock source of the encoder
+ */
+void r600_audio_set_clock(struct drm_encoder *encoder, int clock)
+{
+ struct drm_device *dev = encoder->dev;
+ struct radeon_device *rdev = dev->dev_private;
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ int base_rate = 48000;
+
+ switch (radeon_encoder->encoder_id) {
+ case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
+ case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
+ WREG32_P(R600_AUDIO_TIMING, 0, ~0x301);
+ break;
+
+ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
+ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
+ case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
+ case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
+ WREG32_P(R600_AUDIO_TIMING, 0x100, ~0x301);
+ break;
+
+ default:
+ DRM_ERROR("Unsupported encoder type 0x%02X\n",
+ radeon_encoder->encoder_id);
+ return;
+ }
+
+ switch (r600_audio_tmds_index(encoder)) {
+ case 0:
+ WREG32(R600_AUDIO_PLL1_MUL, base_rate*50);
+ WREG32(R600_AUDIO_PLL1_DIV, clock*100);
+ WREG32(R600_AUDIO_CLK_SRCSEL, 0);
+ break;
+
+ case 1:
+ WREG32(R600_AUDIO_PLL2_MUL, base_rate*50);
+ WREG32(R600_AUDIO_PLL2_DIV, clock*100);
+ WREG32(R600_AUDIO_CLK_SRCSEL, 1);
+ break;
+ }
+}
+
+/*
+ * release the audio timer
+ * TODO: How to do this correctly on SMP systems?
+ */
+void r600_audio_fini(struct radeon_device *rdev)
+{
+ if (!r600_audio_chipset_supported(rdev))
+ return;
+
+ WREG32_P(R600_AUDIO_ENABLE, 0x0, ~0x81000000);
+
+ del_timer(&rdev->audio_timer);
+}