backports: support 3.1 and 3.10 tegra kernels

Changes specific to vendor kernels
Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>

17 files changed, 110 insertions, 7 deletions

diff --git a/backport/backport-include/linux/export.h b/backport/backport-include/linux/export.h
index 6f6cb6a9..a3c7799a 100644
--- a/backport/backport-include/linux/export.h
+++ b/backport/backport-include/linux/export.h
@@ -3,7 +3,7 @@
 
 #include <linux/version.h>
 
-#if LINUX_VERSION_IS_GEQ(3,2,0)
+#if LINUX_VERSION_IS_GEQ(3,1,0)
 #include_next <linux/export.h>
 #else
 #ifndef pr_fmt
@@ -14,6 +14,6 @@
 #undef pr_fmt
 #undef backport_undef_pr_fmt
 #endif
-#endif /* LINUX_VERSION_IS_GEQ(3,2,0) */
+#endif /* LINUX_VERSION_IS_GEQ(3,1,0) */
 
 #endif	/* _COMPAT_LINUX_EXPORT_H */
diff --git a/backport/backport-include/linux/hrtimer.h b/backport/backport-include/linux/hrtimer.h
new file mode 100644
index 00000000..2c186dd1
--- /dev/null
+++ b/backport/backport-include/linux/hrtimer.h
@@ -0,0 +1,10 @@
+#ifndef __BACKPORT_LINUX_HRTIMER_H
+#define __BACKPORT_LINUX_HRTIMER_H
+#include_next <linux/hrtimer.h>
+
+#if LINUX_VERSION_IS_LESS(3,17,0)
+u64 bp_ktime_divns(const ktime_t kt, s64 div);
+#define ktime_divns bp_ktime_divns
+#endif /* < 3.17 */
+
+#endif /* __BACKPORT_LINUX_HRTIMER_H */
diff --git a/backport/backport-include/linux/kernel.h b/backport/backport-include/linux/kernel.h
index f5081663..332f1537 100644
--- a/backport/backport-include/linux/kernel.h
+++ b/backport/backport-include/linux/kernel.h
@@ -1,7 +1,9 @@
 #ifndef __BACKPORT_KERNEL_H
 #define __BACKPORT_KERNEL_H
 #include_next <linux/kernel.h>
+#if LINUX_VERSION_IS_GEQ(4,5,0)
 #include <linux/bug.h>
+#endif
 #include <linux/version.h>
 /*
  * some older kernels don't have this and thus don't
diff --git a/backport/backport-include/linux/netdevice.h b/backport/backport-include/linux/netdevice.h
index c3e91a0c..4b1fddff 100644
--- a/backport/backport-include/linux/netdevice.h
+++ b/backport/backport-include/linux/netdevice.h
@@ -344,7 +344,7 @@ static inline void netif_trans_update(struct net_device *dev)
 	(_dev)->needs_free_netdev = true;
 #endif
 
-#if LINUX_VERSION_IS_LESS(4,15,0)
+#if LINUX_VERSION_IN_RANGE(3,10,0, 4,14,0)
 static inline int _bp_netdev_upper_dev_link(struct net_device *dev,
 					    struct net_device *upper_dev)
 {
diff --git a/backport/backport-include/linux/of_device.h b/backport/backport-include/linux/of_device.h
index 2178a338..827c7fb1 100644
--- a/backport/backport-include/linux/of_device.h
+++ b/backport/backport-include/linux/of_device.h
@@ -24,8 +24,10 @@ static inline int backport_of_dma_configure(struct device *dev,
 #endif /* < 4.18 */
 
 #if LINUX_VERSION_IS_LESS(4,12,0)
+#if LINUX_VERSION_IS_GEQ(4,4,0)
 ssize_t bp_of_device_modalias(struct device *dev, char *str, ssize_t len);
 #define of_device_modalias bp_of_device_modalias
+#endif /* > 4.4.0 */
 #endif /* < 4.12 */
 
 #endif /* __BP_OF_DEVICE_H */
diff --git a/backport/backport-include/linux/pci.h b/backport/backport-include/linux/pci.h
index 3a141bf3..42b3dc53 100644
--- a/backport/backport-include/linux/pci.h
+++ b/backport/backport-include/linux/pci.h
@@ -17,6 +17,9 @@
 		       pci_unregister_driver)
 #endif
 
+#if LINUX_VERSION_IS_LESS(3,4,0)
+void pci_stop_and_remove_bus_device(struct pci_dev *dev);
+#endif
 #if LINUX_VERSION_IS_LESS(3,7,0)
 #define pcie_capability_read_word LINUX_BACKPORT(pcie_capability_read_word)
 int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val);
@@ -60,6 +63,8 @@ static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos,
 {
 	return pcie_capability_clear_and_set_dword(dev, pos, clear, 0);
 }
+
+int pci_pcie_type(struct pci_dev *dev);
 #endif
 
 #ifndef PCI_DEVICE_SUB
diff --git a/backport/backport-include/linux/random.h b/backport/backport-include/linux/random.h
index 7d817d8b..fa016cce 100644
--- a/backport/backport-include/linux/random.h
+++ b/backport/backport-include/linux/random.h
@@ -12,7 +12,9 @@ static inline void add_device_randomness(const void *buf, unsigned int size)
 }
 #endif
 
-#if LINUX_VERSION_IS_LESS(3,8,0)
+/* #if LINUX_VERSION_IS_LESS(3,8,0) */
+/* already backported in our kernels */
+#if 0
 /* backports 496f2f9 */
 #define prandom_seed(_seed)		srandom32(_seed)
 #define prandom_u32()			random32()
diff --git a/backport/backport-include/linux/suspend.h b/backport/backport-include/linux/suspend.h
new file mode 100644
index 00000000..60307182
--- /dev/null
+++ b/backport/backport-include/linux/suspend.h
@@ -0,0 +1,14 @@
+#ifndef __BP_LINUX_SUSPEND_H
+#define __BP_LINUX_SUSPEND_H
+#include_next <linux/suspend.h>
+
+#if LINUX_VERSION_IS_LESS(3,18,0)
+static inline void pm_system_wakeup(void)
+{
+#if LINUX_VERSION_IS_GEQ(3,10,0)
+	freeze_wake();
+#endif
+}
+#endif
+
+#endif /* __BP_LINUX_SUSPEND_H */
diff --git a/backport/backport-include/linux/thermal.h b/backport/backport-include/linux/thermal.h
index 8874e196..ad61a90a 100644
--- a/backport/backport-include/linux/thermal.h
+++ b/backport/backport-include/linux/thermal.h
@@ -6,6 +6,40 @@
 #ifdef CONFIG_THERMAL
 #if LINUX_VERSION_IS_LESS(3,8,0)
 #include <linux/errno.h>
+#include <linux/err.h>
+
+enum thermal_trend {
+	THERMAL_TREND_STABLE, /* temperature is stable */
+	THERMAL_TREND_RAISING, /* temperature is raising */
+	THERMAL_TREND_DROPPING, /* temperature is dropping */
+	THERMAL_TREND_RAISE_FULL, /* apply highest cooling action */
+	THERMAL_TREND_DROP_FULL, /* apply lowest cooling action */
+};
+
+struct backport_thermal_zone_device_ops {
+	int (*bind) (struct thermal_zone_device *,
+		     struct thermal_cooling_device *);
+	int (*unbind) (struct thermal_zone_device *,
+		       struct thermal_cooling_device *);
+	int (*get_temp) (struct thermal_zone_device *, int *);
+	int (*get_mode) (struct thermal_zone_device *,
+			 enum thermal_device_mode *);
+	int (*set_mode) (struct thermal_zone_device *,
+		enum thermal_device_mode);
+	int (*get_trip_type) (struct thermal_zone_device *, int,
+		enum thermal_trip_type *);
+	int (*get_trip_temp) (struct thermal_zone_device *, int, int *);
+	int (*set_trip_temp) (struct thermal_zone_device *, int, int);
+	int (*get_trip_hyst) (struct thermal_zone_device *, int, int *);
+	int (*set_trip_hyst) (struct thermal_zone_device *, int, int);
+	int (*get_crit_temp) (struct thermal_zone_device *, int *);
+	int (*set_emul_temp) (struct thermal_zone_device *, int);
+	int (*get_trend) (struct thermal_zone_device *, int,
+			  enum thermal_trend *);
+	int (*notify) (struct thermal_zone_device *, int,
+		       enum thermal_trip_type);
+};
+#define thermal_zone_device_ops LINUX_BACKPORT(thermal_zone_device_ops)
 
 struct thermal_bind_params {
 	struct thermal_cooling_device *cdev;
diff --git a/backport/backport-include/linux/timekeeping.h b/backport/backport-include/linux/timekeeping.h
index 71871531..a0d65fba 100644
--- a/backport/backport-include/linux/timekeeping.h
+++ b/backport/backport-include/linux/timekeeping.h
@@ -8,6 +8,11 @@
 #endif
 
 #if LINUX_VERSION_IS_LESS(3,17,0)
+#if BITS_PER_LONG < 64
+extern u64 ktime_divns(const ktime_t kt, s64 div);
+#else /* BITS_PER_LONG < 64 */
+# define ktime_divns(kt, div)	(u64)((kt).tv64 / (div))
+#endif
 #define ktime_get_ns LINUX_BACKPORT(ktime_get_ns)
 extern ktime_t ktime_get(void);
 #define ktime_get_ns LINUX_BACKPORT(ktime_get_ns)
diff --git a/backport/backport-include/trace/ftrace.h b/backport/backport-include/trace/ftrace.h
index 2daedd55..756ded36 100644
--- a/backport/backport-include/trace/ftrace.h
+++ b/backport/backport-include/trace/ftrace.h
@@ -9,5 +9,6 @@
 #undef __get_dynamic_array_len
 #define __get_dynamic_array_len(field)	\
 		((__entry->__data_loc_##field >> 16) & 0xffff)
-
+#if LINUX_VERSION_IS_GEQ(3,2,0)
 #include_next <trace/ftrace.h>
+#endif
diff --git a/backport/compat/backport-3.17.c b/backport/compat/backport-3.17.c
index bf6027cb..5961e3bc 100644
--- a/backport/compat/backport-3.17.c
+++ b/backport/compat/backport-3.17.c
@@ -146,6 +146,24 @@ char *devm_kasprintf(struct device *dev, gfp_t gfp, const char *fmt, ...)
 }
 EXPORT_SYMBOL_GPL(devm_kasprintf);
 
+u64 bp_ktime_divns(const ktime_t kt, s64 div)
+{
+	u64 dclc;
+	int sft = 0;
+
+	dclc = ktime_to_ns(kt);
+	/* Make sure the divisor is less than 2^32: */
+	while (div >> 32) {
+		sft++;
+		div >>= 1;
+	}
+	dclc >>= sft;
+	do_div(dclc, (unsigned long) div);
+
+	return dclc;
+}
+EXPORT_SYMBOL_GPL(bp_ktime_divns);
+
 #define STANDARD_PARAM_DEF(name, type, format, strtolfn)      		\
 	int param_set_##name(const char *val, const struct kernel_param *kp) \
 	{								\
diff --git a/backport/compat/backport-4.12.c b/backport/compat/backport-4.12.c
index 413ae7f1..4f9de261 100644
--- a/backport/compat/backport-4.12.c
+++ b/backport/compat/backport-4.12.c
@@ -3,6 +3,7 @@
 #endif
 
 #ifdef CONFIG_OF
+#if LINUX_VERSION_IS_GEQ(4,4,0)
 /**
  * of_device_modalias - Fill buffer with newline terminated modalias string
  */
@@ -20,3 +21,4 @@ ssize_t bp_of_device_modalias(struct device *dev, char *str, ssize_t len)
 }
 EXPORT_SYMBOL_GPL(bp_of_device_modalias);
 #endif
+#endif
diff --git a/backport/compat/compat-3.5.c b/backport/compat/compat-3.5.c
index de312283..721ec0e3 100644
--- a/backport/compat/compat-3.5.c
+++ b/backport/compat/compat-3.5.c
@@ -67,7 +67,9 @@ EXPORT_SYMBOL_GPL(overflowuid);
 EXPORT_SYMBOL_GPL(overflowgid);
 #endif
 
-#if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
+/* #if IS_ENABLED(CONFIG_PTP_1588_CLOCK) */
+/* backported to all of our kernels */
+#if 0
 int ptp_clock_index(struct ptp_clock *ptp)
 {
 	return ptp->index;
diff --git a/backport/compat/compat-3.6.c b/backport/compat/compat-3.6.c
index ef364852..9e593f5c 100644
--- a/backport/compat/compat-3.6.c
+++ b/backport/compat/compat-3.6.c
@@ -14,6 +14,7 @@
 
 /* whoopsie ! */
 #ifndef CONFIG_COMMON_CLK
+#ifndef CONFIG_ARCH_TEGRA
 int clk_enable(struct clk *clk)
 {
 	return 0;
@@ -25,3 +26,4 @@ void clk_disable(struct clk *clk)
 }
 EXPORT_SYMBOL_GPL(clk_disable);
 #endif
+#endif
diff --git a/backport/compat/compat-3.7.c b/backport/compat/compat-3.7.c
index a70709c9..528d7ec9 100644
--- a/backport/compat/compat-3.7.c
+++ b/backport/compat/compat-3.7.c
@@ -49,10 +49,11 @@ static inline u16 pcie_flags_reg(struct pci_dev *dev)
 }
 
 #define pci_pcie_type LINUX_BACKPORT(pci_pcie_type)
-static inline int pci_pcie_type(struct pci_dev *dev)
+int pci_pcie_type(struct pci_dev *dev)
 {
 	return (pcie_flags_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4;
 }
+EXPORT_SYMBOL_GPL(pci_pcie_type);
 
 #define pcie_cap_version LINUX_BACKPORT(pcie_cap_version)
 static inline int pcie_cap_version(struct pci_dev *dev)
diff --git a/backport/compat/compat-3.8.c b/backport/compat/compat-3.8.c
index ff9cd493..21686cc3 100644
--- a/backport/compat/compat-3.8.c
+++ b/backport/compat/compat-3.8.c
@@ -356,6 +356,8 @@ bool hid_ignore(struct hid_device *hdev)
 }
 EXPORT_SYMBOL_GPL(hid_ignore);
 
+/* backported to our kernel */
+#if 0
 /**
  *	prandom_bytes - get the requested number of pseudo-random bytes
  *	@buf: where to copy the pseudo-random bytes to
@@ -386,6 +388,7 @@ void prandom_bytes(void *buf, int bytes)
 	}
 }
 EXPORT_SYMBOL_GPL(prandom_bytes);
+#endif
 
 #ifdef CONFIG_OF
 /**