Kernel: Xiaomi kernel changes for MIX 2S (Android O)

The Patch based on QualComm release version: LA.UM.6.3.r1_r00455
The kernel config file used is polaris_user_defconfig

Change-Id: Idb946ca0603b0f1a358cc2dfd222fe3a77a90188
Signed-off-by: hehao <hehao@xiaomi.com>

.gitignore

@@ -115,5 +115,8 @@ all.config
 # Kdevelop4
 *.kdev4
 
+#audio-kernel
+techpack/audio/
+
 # fetched Android config fragments
 kernel/configs/android-*.cfg

Documentation/devicetree/bindings/arm/msm/msm_watchdog.txt

@@ -33,6 +33,7 @@ Optional properties:
 - qcom,ipi-ping : (boolean) send keep alive ping to other cpus if present
 - qcom,wakeup-enable : (boolean) enable non secure watchdog to freeze / unfreeze
                         automatically across suspend / resume path.
+- qcom,scandump-size : size of scan dump memory region
 
 Example:
 

Documentation/devicetree/bindings/leds/leds-qpnp-flash-v2.txt

@@ -254,6 +254,23 @@ Example:
 			pinctrl-1 = <&led_disable>;
 		};
 
+		pmi8998_flashlight: qcom,flashlight {
+			label = "flash";
+			qcom,led-name = "flashlight";
+			qcom,max-current = <750>;
+			qcom,default-led-trigger =
+						"flashlight_trigger";
+			qcom,id = <3>;
+			qcom,current-ma = <500>;
+			qcom,duration-ms = <1280>;
+			qcom,ires-ua = <12500>;
+			qcom,hdrm-voltage-mv = <325>;
+			qcom,hdrm-vol-hi-lo-win-mv = <100>;
+			pinctrl-names = "led_enable","led_disable";
+			pinctrl-0 = <&led_enable>;
+			pinctrl-1 = <&led_disable>;
+		};
+
 		pmi8998_torch0: qcom,torch_0 {
 			label = "torch";
 			qcom,led-name = "led:torch_0";

Documentation/devicetree/bindings/power/supply/qcom/qpnp-fg-gen3.txt

@@ -104,6 +104,13 @@ First Level Node - FG Gen3 device
 		    this property is not specified, then the default value used
 		    will be 75mA.
 
+- qcom,fg-cutoff-current
+	Usage:      optional
+	Value type: <u32>
+	Definition: Minimum Battery current (in mA) used for cutoff SOC
+		    estimate. If this property is not specified, then a default
+		    value of 500 mA will be applied.
+
 - qcom,fg-delta-soc-thr
 	Usage:      optional
 	Value type: <u32>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -315,3 +315,5 @@ zarlink	Zarlink Semiconductor
 zii	Zodiac Inflight Innovations
 zte	ZTE Corp.
 zyxel	ZyXEL Communications Corp.
+ssp Bcm4775
+ssp,bcm4775 broadcom 4775 gps chip

arch/arm/include/asm/elf.h

@@ -112,8 +112,12 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
 #define CORE_DUMP_USE_REGSET
 #define ELF_EXEC_PAGESIZE	4096
 
-/* This is the base location for PIE (ET_DYN with INTERP) loads. */
-#define ELF_ET_DYN_BASE		0x400000UL
+/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+   use of this is to invoke "./ld.so someprog" to test out a new version of
+   the loader.  We need to make sure that it is out of the way of the program
+   that it will "exec", and that there is sufficient room for the brk.  */
+
+#define ELF_ET_DYN_BASE	(TASK_SIZE / 3 * 2)
 
 /* When the program starts, a1 contains a pointer to a function to be 
    registered with atexit, as per the SVR4 ABI.  A value of 0 means we 

arch/arm/include/asm/kvm_mmu.h

@@ -223,16 +223,6 @@ static inline unsigned int kvm_get_vmid_bits(void)
 	return 8;
 }
 
-static inline void *kvm_get_hyp_vector(void)
-{
-	return kvm_ksym_ref(__kvm_hyp_vector);
-}
-
-static inline int kvm_map_vectors(void)
-{
-	return 0;
-}
-
 #endif	/* !__ASSEMBLY__ */
 
 #endif /* __ARM_KVM_MMU_H__ */

arch/arm64/Kconfig

@@ -781,34 +781,6 @@ config FORCE_MAX_ZONEORDER
 	  However for 4K, we choose a higher default value, 11 as opposed to 10, giving us
 	  4M allocations matching the default size used by generic code.
 
-config UNMAP_KERNEL_AT_EL0
-	bool "Unmap kernel when running in userspace (aka \"KAISER\")" if EXPERT
-	default y
-	help
-	  Speculation attacks against some high-performance processors can
-	  be used to bypass MMU permission checks and leak kernel data to
-	  userspace. This can be defended against by unmapping the kernel
-	  when running in userspace, mapping it back in on exception entry
-	  via a trampoline page in the vector table.
-
-	  If unsure, say Y.
-
-config HARDEN_BRANCH_PREDICTOR
-	bool "Harden the branch predictor against aliasing attacks" if EXPERT
-	help
-	  Speculation attacks against some high-performance processors rely on
-	  being able to manipulate the branch predictor for a victim context by
-	  executing aliasing branches in the attacker context.  Such attacks
-	  can be partially mitigated against by clearing internal branch
-	  predictor state and limiting the prediction logic in some situations.
-
-	  This config option will take CPU-specific actions to harden the
-	  branch predictor against aliasing attacks and may rely on specific
-	  instruction sequences or control bits being set by the system
-	  firmware.
-
-	  If unsure, say Y.
-
 menuconfig ARMV8_DEPRECATED
 	bool "Emulate deprecated/obsolete ARMv8 instructions"
 	depends on COMPAT
@@ -1218,3 +1190,10 @@ source "arch/arm64/crypto/Kconfig"
 endif
 
 source "lib/Kconfig"
+
+config BOOT_INFO
+	bool "Boot information from bootloader"
+	default y
+	help
+	 On embedded linux device, we try to collect more information from
+	 bootloader to kernel. eg. powerup reason.