[PATCH] drm/radeon: add very basic support for audio block on DCE6
Rafał Miłecki
zajec5 at gmail.com
Fri Aug 2 01:11:17 PDT 2013
It doesn't allow playing anything yet, but was the most tricky part to
RE (it's indirect access, so couldn't trace it by dumping registers).
Now we just need to implement support for HDMI blocks.
Signed-off-by: Rafał Miłecki <zajec5 at gmail.com>
---
drivers/gpu/drm/radeon/Makefile | 2 +-
drivers/gpu/drm/radeon/dce6_afmt.c | 88 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/radeon/radeon_asic.h | 2 +
drivers/gpu/drm/radeon/si.c | 7 +++
drivers/gpu/drm/radeon/sid.h | 5 ++
5 files changed, 103 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/radeon/dce6_afmt.c
diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile
index c3df52c..6510fc4 100644
--- a/drivers/gpu/drm/radeon/Makefile
+++ b/drivers/gpu/drm/radeon/Makefile
@@ -79,7 +79,7 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \
si_blit_shaders.o radeon_prime.o radeon_uvd.o cik.o cik_blit_shaders.o \
r600_dpm.o rs780_dpm.o rv6xx_dpm.o rv770_dpm.o rv730_dpm.o rv740_dpm.o \
rv770_smc.o cypress_dpm.o btc_dpm.o sumo_dpm.o sumo_smc.o trinity_dpm.o \
- trinity_smc.o ni_dpm.o si_smc.o si_dpm.o
+ trinity_smc.o ni_dpm.o si_smc.o si_dpm.o dce6_afmt.o
radeon-$(CONFIG_COMPAT) += radeon_ioc32.o
radeon-$(CONFIG_VGA_SWITCHEROO) += radeon_atpx_handler.o
diff --git a/drivers/gpu/drm/radeon/dce6_afmt.c b/drivers/gpu/drm/radeon/dce6_afmt.c
new file mode 100644
index 0000000..0d98143
--- /dev/null
+++ b/drivers/gpu/drm/radeon/dce6_afmt.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright © 2013 Rafał Miłecki <zajec5 at gmail.com>
+ *
+ * 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: Rafał Miłecki
+ */
+#include <drm/drmP.h>
+#include <drm/radeon_drm.h>
+#include "radeon.h"
+#include "radeon_asic.h"
+#include "sid.h"
+
+static u32 dce6_audio_read(struct radeon_device *rdev, u32 reg)
+{
+ WREG32(SI_AUDIO_ADDR, reg);
+ return RREG32(SI_AUDIO_DATA);
+}
+
+static void dce6_audio_write(struct radeon_device *rdev, u32 reg, u32 v)
+{
+ reg |= SI_AUDIO_ADDR_WRITE;
+ WREG32(SI_AUDIO_ADDR, reg);
+ WREG32(SI_AUDIO_DATA, v);
+}
+
+static void dce6_audio_maskset(struct radeon_device *rdev, u32 reg, u32 mask,
+ u32 set)
+{
+ u32 tmp = dce6_audio_read(rdev, reg);
+ tmp &= mask;
+ tmp |= set & ~mask;
+ dce6_audio_write(rdev, reg, tmp);
+}
+
+static void dce6_audio_enable(struct radeon_device *rdev, bool enable)
+{
+ DRM_INFO("%s audio support\n", enable ? "Enabling" : "Disabling");
+
+ if (enable) {
+ dce6_audio_maskset(rdev, 0x54, ~0x80000000, 0x80000000);
+ } else {
+ dce6_audio_maskset(rdev, 0x54, ~0x80000000, 0);
+ /* TODO: clear some bit(s) in reg 0x36 */
+ }
+
+ rdev->audio_enabled = enable;
+}
+
+int dce6_audio_init(struct radeon_device *rdev)
+{
+ if (!radeon_audio)
+ return 0;
+
+ dce6_audio_enable(rdev, true);
+
+ 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;
+}
+
+void dce6_audio_fini(struct radeon_device *rdev)
+{
+ if (!rdev->audio_enabled)
+ return;
+
+ dce6_audio_enable(rdev, false);
+}
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index ca18957..48674ca 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -698,6 +698,8 @@ void si_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
struct seq_file *m);
int si_dpm_force_performance_level(struct radeon_device *rdev,
enum radeon_dpm_forced_level level);
+int dce6_audio_init(struct radeon_device *rdev);
+void dce6_audio_fini(struct radeon_device *rdev);
/* DCE8 - CIK */
void dce8_bandwidth_update(struct radeon_device *rdev);
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index d71037f..e7890bf 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -6590,6 +6590,12 @@ static int si_startup(struct radeon_device *rdev)
return r;
}
+ r = dce6_audio_init(rdev);
+ if (r) {
+ dev_err(rdev->dev, "Audio init failed (%d).\n", r);
+ return r;
+ }
+
return 0;
}
@@ -6621,6 +6627,7 @@ int si_resume(struct radeon_device *rdev)
int si_suspend(struct radeon_device *rdev)
{
+ dce6_audio_fini(rdev);
radeon_vm_manager_fini(rdev);
si_cp_enable(rdev, false);
cayman_dma_stop(rdev);
diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h
index 2c8da27..ddf3818 100644
--- a/drivers/gpu/drm/radeon/sid.h
+++ b/drivers/gpu/drm/radeon/sid.h
@@ -618,6 +618,11 @@
# define MC_WR_CLEAN_CNT(x) ((x) << 20)
# define MC_VMID(x) ((x) << 25)
+#define SI_AUDIO_ADDR 0x5e00
+# define SI_AUDIO_ADDR_REG_MASK 0xff
+# define SI_AUDIO_ADDR_WRITE (1 << 8)
+#define SI_AUDIO_DATA 0x5e04
+
#define CONFIG_MEMSIZE 0x5428
#define INTERRUPT_CNTL 0x5468
--
1.7.10.4
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