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
  ...

1 files changed, 121 insertions, 11 deletions

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index f83dac54ed85..8c1d04db990d 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -420,7 +420,7 @@ static struct clk_core *clk_core_get(struct clk_core *core, u8 p_index)
 static void clk_core_fill_parent_index(struct clk_core *core, u8 index)
 {
 	struct clk_parent_map *entry = &core->parents[index];
-	struct clk_core *parent = ERR_PTR(-ENOENT);
+	struct clk_core *parent;
 
 	if (entry->hw) {
 		parent = entry->hw->core;
@@ -2314,6 +2314,8 @@ int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max)
 	if (!clk)
 		return 0;
 
+	trace_clk_set_rate_range(clk->core, min, max);
+
 	if (min > max) {
 		pr_err("%s: clk %s dev %s con %s: invalid range [%lu, %lu]\n",
 		       __func__, clk->core->name, clk->dev_id, clk->con_id,
@@ -2381,6 +2383,8 @@ int clk_set_min_rate(struct clk *clk, unsigned long rate)
 	if (!clk)
 		return 0;
 
+	trace_clk_set_min_rate(clk->core, rate);
+
 	return clk_set_rate_range(clk, rate, clk->max_rate);
 }
 EXPORT_SYMBOL_GPL(clk_set_min_rate);
@@ -2397,6 +2401,8 @@ int clk_set_max_rate(struct clk *clk, unsigned long rate)
 	if (!clk)
 		return 0;
 
+	trace_clk_set_max_rate(clk->core, rate);
+
 	return clk_set_rate_range(clk, clk->min_rate, rate);
 }
 EXPORT_SYMBOL_GPL(clk_set_max_rate);
@@ -2931,7 +2937,14 @@ static void clk_summary_show_one(struct seq_file *s, struct clk_core *c,
 	else
 		seq_puts(s, "-----");
 
-	seq_printf(s, " %6d\n", clk_core_get_scaled_duty_cycle(c, 100000));
+	seq_printf(s, " %6d", clk_core_get_scaled_duty_cycle(c, 100000));
+
+	if (c->ops->is_enabled)
+		seq_printf(s, " %9c\n", clk_core_is_enabled(c) ? 'Y' : 'N');
+	else if (!c->ops->enable)
+		seq_printf(s, " %9c\n", 'Y');
+	else
+		seq_printf(s, " %9c\n", '?');
 }
 
 static void clk_summary_show_subtree(struct seq_file *s, struct clk_core *c,
@@ -2950,9 +2963,9 @@ static int clk_summary_show(struct seq_file *s, void *data)
 	struct clk_core *c;
 	struct hlist_head **lists = (struct hlist_head **)s->private;
 
-	seq_puts(s, "                                 enable  prepare  protect                                duty\n");
-	seq_puts(s, "   clock                          count    count    count        rate   accuracy phase  cycle\n");
-	seq_puts(s, "---------------------------------------------------------------------------------------------\n");
+	seq_puts(s, "                                 enable  prepare  protect                                duty  hardware\n");
+	seq_puts(s, "   clock                          count    count    count        rate   accuracy phase  cycle    enable\n");
+	seq_puts(s, "-------------------------------------------------------------------------------------------------------\n");
 
 	clk_prepare_lock();
 
@@ -3667,6 +3680,24 @@ struct clk *clk_hw_create_clk(struct device *dev, struct clk_hw *hw,
 	return clk;
 }
 
+/**
+ * clk_hw_get_clk - get clk consumer given an clk_hw
+ * @hw: clk_hw associated with the clk being consumed
+ * @con_id: connection ID string on device
+ *
+ * Returns: new clk consumer
+ * This is the function to be used by providers which need
+ * to get a consumer clk and act on the clock element
+ * Calls to this function must be balanced with calls clk_put()
+ */
+struct clk *clk_hw_get_clk(struct clk_hw *hw, const char *con_id)
+{
+	struct device *dev = hw->core->dev;
+
+	return clk_hw_create_clk(dev, hw, dev_name(dev), con_id);
+}
+EXPORT_SYMBOL(clk_hw_get_clk);
+
 static int clk_cpy_name(const char **dst_p, const char *src, bool must_exist)
 {
 	const char *dst;
@@ -4068,12 +4099,12 @@ void clk_hw_unregister(struct clk_hw *hw)
 }
 EXPORT_SYMBOL_GPL(clk_hw_unregister);
 
-static void devm_clk_release(struct device *dev, void *res)
+static void devm_clk_unregister_cb(struct device *dev, void *res)
 {
 	clk_unregister(*(struct clk **)res);
 }
 
-static void devm_clk_hw_release(struct device *dev, void *res)
+static void devm_clk_hw_unregister_cb(struct device *dev, void *res)
 {
 	clk_hw_unregister(*(struct clk_hw **)res);
 }
@@ -4093,7 +4124,7 @@ struct clk *devm_clk_register(struct device *dev, struct clk_hw *hw)
 	struct clk *clk;
 	struct clk **clkp;
 
-	clkp = devres_alloc(devm_clk_release, sizeof(*clkp), GFP_KERNEL);
+	clkp = devres_alloc(devm_clk_unregister_cb, sizeof(*clkp), GFP_KERNEL);
 	if (!clkp)
 		return ERR_PTR(-ENOMEM);
 
@@ -4123,7 +4154,7 @@ int devm_clk_hw_register(struct device *dev, struct clk_hw *hw)
 	struct clk_hw **hwp;
 	int ret;
 
-	hwp = devres_alloc(devm_clk_hw_release, sizeof(*hwp), GFP_KERNEL);
+	hwp = devres_alloc(devm_clk_hw_unregister_cb, sizeof(*hwp), GFP_KERNEL);
 	if (!hwp)
 		return -ENOMEM;
 
@@ -4167,7 +4198,7 @@ static int devm_clk_hw_match(struct device *dev, void *res, void *data)
  */
 void devm_clk_unregister(struct device *dev, struct clk *clk)
 {
-	WARN_ON(devres_release(dev, devm_clk_release, devm_clk_match, clk));
+	WARN_ON(devres_release(dev, devm_clk_unregister_cb, devm_clk_match, clk));
 }
 EXPORT_SYMBOL_GPL(devm_clk_unregister);
 
@@ -4182,11 +4213,54 @@ EXPORT_SYMBOL_GPL(devm_clk_unregister);
  */
 void devm_clk_hw_unregister(struct device *dev, struct clk_hw *hw)
 {
-	WARN_ON(devres_release(dev, devm_clk_hw_release, devm_clk_hw_match,
+	WARN_ON(devres_release(dev, devm_clk_hw_unregister_cb, devm_clk_hw_match,
 				hw));
 }
 EXPORT_SYMBOL_GPL(devm_clk_hw_unregister);
 
+static void devm_clk_release(struct device *dev, void *res)
+{
+	clk_put(*(struct clk **)res);
+}
+
+/**
+ * devm_clk_hw_get_clk - resource managed clk_hw_get_clk()
+ * @dev: device that is registering this clock
+ * @hw: clk_hw associated with the clk being consumed
+ * @con_id: connection ID string on device
+ *
+ * Managed clk_hw_get_clk(). Clocks got with this function are
+ * automatically clk_put() on driver detach. See clk_put()
+ * for more information.
+ */
+struct clk *devm_clk_hw_get_clk(struct device *dev, struct clk_hw *hw,
+				const char *con_id)
+{
+	struct clk *clk;
+	struct clk **clkp;
+
+	/* This should not happen because it would mean we have drivers
+	 * passing around clk_hw pointers instead of having the caller use
+	 * proper clk_get() style APIs
+	 */
+	WARN_ON_ONCE(dev != hw->core->dev);
+
+	clkp = devres_alloc(devm_clk_release, sizeof(*clkp), GFP_KERNEL);
+	if (!clkp)
+		return ERR_PTR(-ENOMEM);
+
+	clk = clk_hw_get_clk(hw, con_id);
+	if (!IS_ERR(clk)) {
+		*clkp = clk;
+		devres_add(dev, clkp);
+	} else {
+		devres_free(clkp);
+	}
+
+	return clk;
+}
+EXPORT_SYMBOL_GPL(devm_clk_hw_get_clk);
+
 /*
  * clkdev helpers
  */
@@ -4334,6 +4408,42 @@ int clk_notifier_unregister(struct clk *clk, struct notifier_block *nb)
 }
 EXPORT_SYMBOL_GPL(clk_notifier_unregister);
 
+struct clk_notifier_devres {
+	struct clk *clk;
+	struct notifier_block *nb;
+};
+
+static void devm_clk_notifier_release(struct device *dev, void *res)
+{
+	struct clk_notifier_devres *devres = res;
+
+	clk_notifier_unregister(devres->clk, devres->nb);
+}
+
+int devm_clk_notifier_register(struct device *dev, struct clk *clk,
+			       struct notifier_block *nb)
+{
+	struct clk_notifier_devres *devres;
+	int ret;
+
+	devres = devres_alloc(devm_clk_notifier_release,
+			      sizeof(*devres), GFP_KERNEL);
+
+	if (!devres)
+		return -ENOMEM;
+
+	ret = clk_notifier_register(clk, nb);
+	if (!ret) {
+		devres->clk = clk;
+		devres->nb = nb;
+	} else {
+		devres_free(devres);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(devm_clk_notifier_register);
+
 #ifdef CONFIG_OF
 static void clk_core_reparent_orphans(void)
 {