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Subject[ 17/42] drm/radeon/kms: fix fans after resume
3.0-stable review patch.  If anyone has any objections, please let me know.

------------------
From: Alex Deucher <alexander.deucher@amd.com>

commit 402976fe51b2d1a58a29ba06fa1ca5ace3a4cdcd upstream.

On pre-R600 asics, the SpeedFanControl table is not
executed as part of ASIC_Init as it is on newer asics.

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=29412

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/gpu/drm/radeon/atom.c | 15 ++++++++++++++-
drivers/gpu/drm/radeon/atom.h | 1 +
2 files changed, 15 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -1301,8 +1301,11 @@ struct atom_context *atom_parse(struct c

int atom_asic_init(struct atom_context *ctx)
{
+ struct radeon_device *rdev = ctx->card->dev->dev_private;
int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR);
uint32_t ps[16];
+ int ret;
+
memset(ps, 0, 64);

ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR));
@@ -1312,7 +1315,17 @@ int atom_asic_init(struct atom_context *

if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT))
return 1;
- return atom_execute_table(ctx, ATOM_CMD_INIT, ps);
+ ret = atom_execute_table(ctx, ATOM_CMD_INIT, ps);
+ if (ret)
+ return ret;
+
+ memset(ps, 0, 64);
+
+ if (rdev->family < CHIP_R600) {
+ if (CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_SPDFANCNTL))
+ atom_execute_table(ctx, ATOM_CMD_SPDFANCNTL, ps);
+ }
+ return ret;
}

void atom_destroy(struct atom_context *ctx)
--- a/drivers/gpu/drm/radeon/atom.h
+++ b/drivers/gpu/drm/radeon/atom.h
@@ -44,6 +44,7 @@
#define ATOM_CMD_SETSCLK 0x0A
#define ATOM_CMD_SETMCLK 0x0B
#define ATOM_CMD_SETPCLK 0x0C
+#define ATOM_CMD_SPDFANCNTL 0x39

#define ATOM_DATA_FWI_PTR 0xC
#define ATOM_DATA_IIO_PTR 0x32

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