IPS driver: add GPU busy and turbo checking

Be sure to enable GPU turbo by default at load time and check GPU busy
and MCP exceeded status correctly.  Also fix up CPU power comparison and
work around buggy MCH temp reporting.

Signed-off-by: Jesse Barnes <[email protected]>
Signed-off-by: Matthew Garrett <[email protected]>

Author: jbarnes993

drivers/platform/x86/intel_ips.c

@@ -525,7 +525,7 @@ static void ips_disable_cpu_turbo(struct ips_driver *ips)
  */
 static bool ips_gpu_busy(struct ips_driver *ips)
 {
-	if (!ips_gpu_turbo_enabled(ips))
+	if (!ips->gpu_turbo_enabled)
 		return false;
 
 	return ips->gpu_busy();
@@ -1587,7 +1587,7 @@ static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id)
 		ips->poll_turbo_status = true;
 
 	if (!ips_get_i915_syms(ips)) {
-		dev_info(&dev->dev, "failed to get i915 symbols, graphics turbo disabled until i915 loads\n");
+		dev_err(&dev->dev, "failed to get i915 symbols, graphics turbo disabled\n");
 		ips->gpu_turbo_enabled = false;
 	} else {
 		dev_dbg(&dev->dev, "graphics turbo enabled\n");