DMC version 1.06 has a known bug, where the firmware polls forever for a port
PLL to lock, if the PLL was disabled when entering DC5. Version 1.07 fixes
this, so make that the minimum required version on BXT.
CC: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_csr.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
index 3f57cb9..d57b00e 100644
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -50,6 +50,7 @@ MODULE_FIRMWARE(I915_CSR_SKL);
MODULE_FIRMWARE(I915_CSR_BXT);
#define SKL_CSR_VERSION_REQUIRED CSR_VERSION(1, 23)
+#define BXT_CSR_VERSION_REQUIRED CSR_VERSION(1, 7)
#define CSR_MAX_FW_SIZE 0x2FFF
#define CSR_DEFAULT_FW_OFFSET 0xFFFFFFFF
@@ -281,6 +282,7 @@ static uint32_t *parse_csr_fw(struct drm_i915_private *dev_priv,
uint32_t dmc_offset = CSR_DEFAULT_FW_OFFSET, readcount = 0, nbytes;
uint32_t i;
uint32_t *dmc_payload;
+ uint32_t required_min_version;
if (!fw)
return NULL;
@@ -296,15 +298,23 @@ static uint32_t *parse_csr_fw(struct drm_i915_private *dev_priv,
csr->version = css_header->version;
- if ((IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) &&
- csr->version < SKL_CSR_VERSION_REQUIRED) {
- DRM_INFO("Refusing to load old Skylake DMC firmware v%u.%u,"
+ if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
+ required_min_version = SKL_CSR_VERSION_REQUIRED;
+ } else if (IS_BROXTON(dev_priv)) {
+ required_min_version = BXT_CSR_VERSION_REQUIRED;
+ } else {
+ MISSING_CASE(INTEL_REVID(dev_priv));
+ required_min_version = 0;
+ }
+
+ if (csr->version < required_min_version) {
+ DRM_INFO("Refusing to load old DMC firmware v%u.%u,"
" please upgrade to v%u.%u or later"
" [" FIRMWARE_URL "].\n",
CSR_VERSION_MAJOR(csr->version),
CSR_VERSION_MINOR(csr->version),
- CSR_VERSION_MAJOR(SKL_CSR_VERSION_REQUIRED),
- CSR_VERSION_MINOR(SKL_CSR_VERSION_REQUIRED));
+ CSR_VERSION_MAJOR(required_min_version),
+ CSR_VERSION_MINOR(required_min_version));
return NULL;
}
--
2.5.0
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