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authorLinus Torvalds <torvalds@linux-foundation.org>2020-12-21 21:39:37 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-21 21:39:37 +0300
commit8653b778e454a7708847aeafe689bce07aeeb94e (patch)
tree50be6b2267d42c3b8cd6721625632ea5e62fa117 /include/linux
parent8552d28e140110fc935b39a6bfaf33c8ce3a1ad5 (diff)
parentabe7e32f1d50392fbfb6391f4fe1a9f1348b24f3 (diff)
downloadlinux-8653b778e454a7708847aeafe689bce07aeeb94e.tar.xz
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd: "The core framework got some nice improvements this time around. We gained the ability to get struct clk pointers from a struct clk_hw so that clk providers can consume the clks they provide, if they need to do something like that. This has been a long missing part of the clk provider API that will help us move away from exposing a struct clk pointer in the struct clk_hw. Tracepoints are added for the clk_set_rate() "range" functions, similar to the tracepoints we already have for clk_set_rate() and we added a column to debugfs to help developers understand the hardware enable state of clks in case firmware or bootloader state is different than what is expected. Overall the core changes are mostly improving the clk driver writing experience. At the driver level, we have the usual collection of driver updates and new drivers for new SoCs. This time around the Qualcomm folks introduced a good handful of clk drivers for various parts of three or four SoCs. The SiFive folks added a new clk driver for their FU740 SoCs, coming in second on the diffstat and then Atmel AT91 and Amlogic SoCs had lots of work done after that for various new features. One last thing to note in the driver area is that the i.MX driver has gained a new binding to support SCU clks after being on the list for many months. It uses a two cell binding which is sort of rare in clk DT bindings. Beyond that we have the usual set of driver fixes and tweaks that come from more testing and finding out that some configuration was wrong or that a driver could support being built as a module. Summary: Core: - Add some trace points for clk_set_rate() "range" functions - Add hardware enable information to clk_summary debugfs - Replace clk-provider.h with of_clk.h when possible - Add devm variant of clk_notifier_register() - Add clk_hw_get_clk() to generate a struct clk from a struct clk_hw New Drivers: - Bindings for Canaan K210 SoC clks - Support for SiFive FU740 PRCI - Camera clks on Qualcomm SC7180 SoCs - GCC and RPMh clks on Qualcomm SDX55 SoCs - RPMh clks on Qualcomm SM8350 SoCs - LPASS clks on Qualcomm SM8250 SoCs Updates: - DVFS support for AT91 clk driver - Update git repo branch for Renesas clock drivers - Add camera (CSI) and video-in (VIN) clocks on Renesas R-Car V3U - Add RPC (QSPI/HyperFLASH) clocks on Renesas RZ/G2M, RZ/G2N, and RZ/G2E - Stop using __raw_*() I/O accessors in Renesas clk drivers - One more conversion of DT bindings to json-schema - Make i.MX clk-gate2 driver more flexible - New two cell binding for i.MX SCU clks - Drop of_match_ptr() in i.MX8 clk drivers - Add arch dependencies for Rockchip clk drivers - Fix i2s on Rockchip rk3066 - Add MIPI DSI clks on Amlogic axg and g12 SoCs - Support modular builds of Amlogic clk drivers - Fix an Amlogic Video PLL clock dependency - Samsung Kconfig dependencies updates for better compile test coverage - Refactoring of the Samsung PLL clocks driver - Small Tegra driver cleanups - Minor fixes to Ingenic and VC5 clk drivers - Cleanup patches to remove unused variables and plug memory leaks" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (134 commits) dt-binding: clock: Document canaan,k210-clk bindings dt-bindings: Add Canaan vendor prefix clk: vc5: Use "idt,voltage-microvolt" instead of "idt,voltage-microvolts" clk: ingenic: Fix divider calculation with div tables clk: sunxi-ng: Make sure divider tables have sentinel clk: s2mps11: Fix a resource leak in error handling paths in the probe function clk: mvebu: a3700: fix the XTAL MODE pin to MPP1_9 clk: si5351: Wait for bit clear after PLL reset clk: at91: sam9x60: remove atmel,osc-bypass support clk: at91: sama7g5: register cpu clock clk: at91: clk-master: re-factor master clock clk: at91: sama7g5: do not allow cpu pll to go higher than 1GHz clk: at91: sama7g5: decrease lower limit for MCK0 rate clk: at91: sama7g5: remove mck0 from parent list of other clocks clk: at91: clk-sam9x60-pll: allow runtime changes for pll clk: at91: sama7g5: add 5th divisor for mck0 layout and characteristics clk: at91: clk-master: add 5th divisor for mck master clk: at91: sama7g5: allow SYS and CPU PLLs to be exported and referenced in DT dt-bindings: clock: at91: add sama7g5 pll defines clk: at91: sama7g5: fix compilation error ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/clk-provider.h39
-rw-r--r--include/linux/clk.h20
-rw-r--r--include/linux/clk/samsung.h4
3 files changed, 60 insertions, 3 deletions
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 03a5de5f99f4..e4316890661a 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -639,6 +639,12 @@ struct clk_hw *__clk_hw_register_divider(struct device *dev,
const struct clk_parent_data *parent_data, unsigned long flags,
void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags,
const struct clk_div_table *table, spinlock_t *lock);
+struct clk_hw *__devm_clk_hw_register_divider(struct device *dev,
+ struct device_node *np, const char *name,
+ const char *parent_name, const struct clk_hw *parent_hw,
+ const struct clk_parent_data *parent_data, unsigned long flags,
+ void __iomem *reg, u8 shift, u8 width, u8 clk_divider_flags,
+ const struct clk_div_table *table, spinlock_t *lock);
struct clk *clk_register_divider_table(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
@@ -779,6 +785,27 @@ struct clk *clk_register_divider_table(struct device *dev, const char *name,
(parent_data), (flags), (reg), (shift), \
(width), (clk_divider_flags), (table), \
(lock))
+/**
+ * devm_clk_hw_register_divider_table - register a table based divider clock
+ * with the clock framework (devres variant)
+ * @dev: device registering this clock
+ * @name: name of this clock
+ * @parent_name: name of clock's parent
+ * @flags: framework-specific flags
+ * @reg: register address to adjust divider
+ * @shift: number of bits to shift the bitfield
+ * @width: width of the bitfield
+ * @clk_divider_flags: divider-specific flags for this clock
+ * @table: array of divider/value pairs ending with a div set to 0
+ * @lock: shared register lock for this clock
+ */
+#define devm_clk_hw_register_divider_table(dev, name, parent_name, flags, \
+ reg, shift, width, \
+ clk_divider_flags, table, lock) \
+ __devm_clk_hw_register_divider((dev), NULL, (name), (parent_name), \
+ NULL, NULL, (flags), (reg), (shift), \
+ (width), (clk_divider_flags), (table), \
+ (lock))
void clk_unregister_divider(struct clk *clk);
void clk_hw_unregister_divider(struct clk_hw *hw);
@@ -1062,6 +1089,13 @@ struct clk_hw *clk_hw_register_composite_pdata(struct device *dev,
struct clk_hw *rate_hw, const struct clk_ops *rate_ops,
struct clk_hw *gate_hw, const struct clk_ops *gate_ops,
unsigned long flags);
+struct clk_hw *devm_clk_hw_register_composite_pdata(struct device *dev,
+ const char *name, const struct clk_parent_data *parent_data,
+ int num_parents,
+ struct clk_hw *mux_hw, const struct clk_ops *mux_ops,
+ struct clk_hw *rate_hw, const struct clk_ops *rate_ops,
+ struct clk_hw *gate_hw, const struct clk_ops *gate_ops,
+ unsigned long flags);
void clk_hw_unregister_composite(struct clk_hw *hw);
struct clk *clk_register(struct device *dev, struct clk_hw *hw);
@@ -1088,6 +1122,11 @@ static inline struct clk_hw *__clk_get_hw(struct clk *clk)
return (struct clk_hw *)clk;
}
#endif
+
+struct clk *clk_hw_get_clk(struct clk_hw *hw, const char *con_id);
+struct clk *devm_clk_hw_get_clk(struct device *dev, struct clk_hw *hw,
+ const char *con_id);
+
unsigned int clk_hw_get_num_parents(const struct clk_hw *hw);
struct clk_hw *clk_hw_get_parent(const struct clk_hw *hw);
struct clk_hw *clk_hw_get_parent_by_index(const struct clk_hw *hw,
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 7fd6a1febcf4..31ff1bf1b79f 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -110,6 +110,17 @@ int clk_notifier_register(struct clk *clk, struct notifier_block *nb);
int clk_notifier_unregister(struct clk *clk, struct notifier_block *nb);
/**
+ * devm_clk_notifier_register - register a managed rate-change notifier callback
+ * @dev: device for clock "consumer"
+ * @clk: clock whose rate we are interested in
+ * @nb: notifier block with callback function pointer
+ *
+ * Returns 0 on success, -EERROR otherwise
+ */
+int devm_clk_notifier_register(struct device *dev, struct clk *clk,
+ struct notifier_block *nb);
+
+/**
* clk_get_accuracy - obtain the clock accuracy in ppb (parts per billion)
* for a clock source.
* @clk: clock source
@@ -150,7 +161,7 @@ int clk_get_phase(struct clk *clk);
int clk_set_duty_cycle(struct clk *clk, unsigned int num, unsigned int den);
/**
- * clk_get_duty_cycle - return the duty cycle ratio of a clock signal
+ * clk_get_scaled_duty_cycle - return the duty cycle ratio of a clock signal
* @clk: clock signal source
* @scale: scaling factor to be applied to represent the ratio as an integer
*
@@ -186,6 +197,13 @@ static inline int clk_notifier_unregister(struct clk *clk,
return -ENOTSUPP;
}
+static inline int devm_clk_notifier_register(struct device *dev,
+ struct clk *clk,
+ struct notifier_block *nb)
+{
+ return -ENOTSUPP;
+}
+
static inline long clk_get_accuracy(struct clk *clk)
{
return -ENOTSUPP;
diff --git a/include/linux/clk/samsung.h b/include/linux/clk/samsung.h
index 79097e365f7f..38b774001712 100644
--- a/include/linux/clk/samsung.h
+++ b/include/linux/clk/samsung.h
@@ -10,7 +10,7 @@
struct device_node;
-#ifdef CONFIG_ARCH_S3C64XX
+#ifdef CONFIG_S3C64XX_COMMON_CLK
void s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
unsigned long xusbxti_f, bool s3c6400,
void __iomem *base);
@@ -19,7 +19,7 @@ static inline void s3c64xx_clk_init(struct device_node *np,
unsigned long xtal_f,
unsigned long xusbxti_f,
bool s3c6400, void __iomem *base) { }
-#endif /* CONFIG_ARCH_S3C64XX */
+#endif /* CONFIG_S3C64XX_COMMON_CLK */
#ifdef CONFIG_S3C2410_COMMON_CLK
void s3c2410_common_clk_init(struct device_node *np, unsigned long xti_f,