Merge tag 'meson-clk-4.19-1' of https://github.com/BayLibre/clk-meson into clk-meson

Pull first round of updates for meson clocks from Jerome Brunet:

 - Remove legacy register access (finish moving to syscon)
 - Clean up configuration flags
 - Add axg PCIe clocks
 - Add GEN CLK on gxbb, gxl and axg
 - Remove clk_audio_divider driver
 - Add axg audio clock controller

* tag 'meson-clk-4.19-1' of https://github.com/BayLibre/clk-meson:
  clk: meson: add gen_clk
  clk: meson: gxbb: remove HHI_GEN_CLK_CTNL duplicate definition
  clk: meson-axg: add clocks required by pcie driver
  clk: meson: remove unused clk-audio-divider driver
  clk: meson: stop rate propagation for audio clocks
  clk: meson: axg: add the audio clock controller driver
  clk: meson: add axg audio sclk divider driver
  clk: meson: add triple phase clock driver
  clk: meson: add clk-phase clock driver
  clk: meson: clean-up meson clock configuration
  clk: meson: remove obsolete register access
  clk: meson: expose GEN_CLK clkid
  clk: meson-axg: add pcie and mipi clock bindings
  dt-bindings: clock: add meson axg audio clock controller bindings
  clk: meson: audio-divider is one based
  clk: add duty cycle support
  clk: meson-gxbb: set fclk_div2 as CLK_IS_CRITICAL

6 files changed, 194 insertions, 0 deletions

diff --git a/include/dt-bindings/clock/axg-audio-clkc.h b/include/dt-bindings/clock/axg-audio-clkc.h
new file mode 100644
index 000000000000..fd9c362099d9
--- /dev/null
+++ b/include/dt-bindings/clock/axg-audio-clkc.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
+/*
+ * Copyright (c) 2018 Baylibre SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#ifndef __AXG_AUDIO_CLKC_BINDINGS_H
+#define __AXG_AUDIO_CLKC_BINDINGS_H
+
+#define AUD_CLKID_SLV_SCLK0		9
+#define AUD_CLKID_SLV_SCLK1		10
+#define AUD_CLKID_SLV_SCLK2		11
+#define AUD_CLKID_SLV_SCLK3		12
+#define AUD_CLKID_SLV_SCLK4		13
+#define AUD_CLKID_SLV_SCLK5		14
+#define AUD_CLKID_SLV_SCLK6		15
+#define AUD_CLKID_SLV_SCLK7		16
+#define AUD_CLKID_SLV_SCLK8		17
+#define AUD_CLKID_SLV_SCLK9		18
+#define AUD_CLKID_SLV_LRCLK0		19
+#define AUD_CLKID_SLV_LRCLK1		20
+#define AUD_CLKID_SLV_LRCLK2		21
+#define AUD_CLKID_SLV_LRCLK3		22
+#define AUD_CLKID_SLV_LRCLK4		23
+#define AUD_CLKID_SLV_LRCLK5		24
+#define AUD_CLKID_SLV_LRCLK6		25
+#define AUD_CLKID_SLV_LRCLK7		26
+#define AUD_CLKID_SLV_LRCLK8		27
+#define AUD_CLKID_SLV_LRCLK9		28
+#define AUD_CLKID_DDR_ARB		29
+#define AUD_CLKID_PDM			30
+#define AUD_CLKID_TDMIN_A		31
+#define AUD_CLKID_TDMIN_B		32
+#define AUD_CLKID_TDMIN_C		33
+#define AUD_CLKID_TDMIN_LB		34
+#define AUD_CLKID_TDMOUT_A		35
+#define AUD_CLKID_TDMOUT_B		36
+#define AUD_CLKID_TDMOUT_C		37
+#define AUD_CLKID_FRDDR_A		38
+#define AUD_CLKID_FRDDR_B		39
+#define AUD_CLKID_FRDDR_C		40
+#define AUD_CLKID_TODDR_A		41
+#define AUD_CLKID_TODDR_B		42
+#define AUD_CLKID_TODDR_C		43
+#define AUD_CLKID_LOOPBACK		44
+#define AUD_CLKID_SPDIFIN		45
+#define AUD_CLKID_SPDIFOUT		46
+#define AUD_CLKID_RESAMPLE		47
+#define AUD_CLKID_POWER_DETECT		48
+#define AUD_CLKID_MST_A_MCLK		49
+#define AUD_CLKID_MST_B_MCLK		50
+#define AUD_CLKID_MST_C_MCLK		51
+#define AUD_CLKID_MST_D_MCLK		52
+#define AUD_CLKID_MST_E_MCLK		53
+#define AUD_CLKID_MST_F_MCLK		54
+#define AUD_CLKID_SPDIFOUT_CLK		55
+#define AUD_CLKID_SPDIFIN_CLK		56
+#define AUD_CLKID_PDM_DCLK		57
+#define AUD_CLKID_PDM_SYSCLK		58
+#define AUD_CLKID_MST_A_SCLK		79
+#define AUD_CLKID_MST_B_SCLK		80
+#define AUD_CLKID_MST_C_SCLK		81
+#define AUD_CLKID_MST_D_SCLK		82
+#define AUD_CLKID_MST_E_SCLK		83
+#define AUD_CLKID_MST_F_SCLK		84
+#define AUD_CLKID_MST_A_LRCLK		86
+#define AUD_CLKID_MST_B_LRCLK		87
+#define AUD_CLKID_MST_C_LRCLK		88
+#define AUD_CLKID_MST_D_LRCLK		89
+#define AUD_CLKID_MST_E_LRCLK		90
+#define AUD_CLKID_MST_F_LRCLK		91
+#define AUD_CLKID_TDMIN_A_SCLK_SEL	116
+#define AUD_CLKID_TDMIN_B_SCLK_SEL	117
+#define AUD_CLKID_TDMIN_C_SCLK_SEL	118
+#define AUD_CLKID_TDMIN_LB_SCLK_SEL	119
+#define AUD_CLKID_TDMOUT_A_SCLK_SEL	120
+#define AUD_CLKID_TDMOUT_B_SCLK_SEL	121
+#define AUD_CLKID_TDMOUT_C_SCLK_SEL	122
+#define AUD_CLKID_TDMIN_A_SCLK		123
+#define AUD_CLKID_TDMIN_B_SCLK		124
+#define AUD_CLKID_TDMIN_C_SCLK		125
+#define AUD_CLKID_TDMIN_LB_SCLK		126
+#define AUD_CLKID_TDMOUT_A_SCLK		127
+#define AUD_CLKID_TDMOUT_B_SCLK		128
+#define AUD_CLKID_TDMOUT_C_SCLK		129
+#define AUD_CLKID_TDMIN_A_LRCLK		130
+#define AUD_CLKID_TDMIN_B_LRCLK		131
+#define AUD_CLKID_TDMIN_C_LRCLK		132
+#define AUD_CLKID_TDMIN_LB_LRCLK	133
+#define AUD_CLKID_TDMOUT_A_LRCLK	134
+#define AUD_CLKID_TDMOUT_B_LRCLK	135
+#define AUD_CLKID_TDMOUT_C_LRCLK	136
+
+#endif /* __AXG_AUDIO_CLKC_BINDINGS_H */
diff --git a/include/dt-bindings/clock/axg-clkc.h b/include/dt-bindings/clock/axg-clkc.h
index 555937a25504..fd1f938c38d1 100644
--- a/include/dt-bindings/clock/axg-clkc.h
+++ b/include/dt-bindings/clock/axg-clkc.h
@@ -68,5 +68,9 @@
 #define CLKID_SD_EMMC_B_CLK0			59
 #define CLKID_SD_EMMC_C_CLK0			60
 #define CLKID_HIFI_PLL				69
+#define CLKID_PCIE_CML_EN0			79
+#define CLKID_PCIE_CML_EN1			80
+#define CLKID_MIPI_ENABLE			81
+#define CLKID_GEN_CLK				84
 
 #endif /* __AXG_CLKC_H */
diff --git a/include/dt-bindings/clock/gxbb-clkc.h b/include/dt-bindings/clock/gxbb-clkc.h
index 7a892be90549..3979d48c025f 100644
--- a/include/dt-bindings/clock/gxbb-clkc.h
+++ b/include/dt-bindings/clock/gxbb-clkc.h
@@ -127,5 +127,6 @@
 #define CLKID_VAPB		140
 #define CLKID_VDEC_1		153
 #define CLKID_VDEC_HEVC		156
+#define CLKID_GEN_CLK		159
 
 #endif /* __GXBB_CLKC_H */
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index b7cfa037e593..08b1aa70a38d 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -38,6 +38,8 @@
 #define CLK_IS_CRITICAL		BIT(11) /* do not gate, ever */
 /* parents need enable during gate/ungate, set rate and re-parent */
 #define CLK_OPS_PARENT_ENABLE	BIT(12)
+/* duty cycle call may be forwarded to the parent clock */
+#define CLK_DUTY_CYCLE_PARENT	BIT(13)
 
 struct clk;
 struct clk_hw;
@@ -67,6 +69,17 @@ struct clk_rate_request {
 };
 
 /**
+ * struct clk_duty - Struture encoding the duty cycle ratio of a clock
+ *
+ * @num:	Numerator of the duty cycle ratio
+ * @den:	Denominator of the duty cycle ratio
+ */
+struct clk_duty {
+	unsigned int num;
+	unsigned int den;
+};
+
+/**
  * struct clk_ops -  Callback operations for hardware clocks; these are to
  * be provided by the clock implementation, and will be called by drivers
  * through the clk_* api.
@@ -169,6 +182,15 @@ struct clk_rate_request {
  *		by the second argument. Valid values for degrees are
  *		0-359. Return 0 on success, otherwise -EERROR.
  *
+ * @get_duty_cycle: Queries the hardware to get the current duty cycle ratio
+ *              of a clock. Returned values denominator cannot be 0 and must be
+ *              superior or equal to the numerator.
+ *
+ * @set_duty_cycle: Apply the duty cycle ratio to this clock signal specified by
+ *              the numerator (2nd argurment) and denominator (3rd  argument).
+ *              Argument must be a valid ratio (denominator > 0
+ *              and >= numerator) Return 0 on success, otherwise -EERROR.
+ *
  * @init:	Perform platform-specific initialization magic.
  *		This is not not used by any of the basic clock types.
  *		Please consider other ways of solving initialization problems
@@ -218,6 +240,10 @@ struct clk_ops {
 					   unsigned long parent_accuracy);
 	int		(*get_phase)(struct clk_hw *hw);
 	int		(*set_phase)(struct clk_hw *hw, int degrees);
+	int		(*get_duty_cycle)(struct clk_hw *hw,
+					  struct clk_duty *duty);
+	int		(*set_duty_cycle)(struct clk_hw *hw,
+					  struct clk_duty *duty);
 	void		(*init)(struct clk_hw *hw);
 	void		(*debug_init)(struct clk_hw *hw, struct dentry *dentry);
 };
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 0dbd0885b2c2..4f750c481b82 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -142,6 +142,27 @@ int clk_set_phase(struct clk *clk, int degrees);
 int clk_get_phase(struct clk *clk);
 
 /**
+ * clk_set_duty_cycle - adjust the duty cycle ratio of a clock signal
+ * @clk: clock signal source
+ * @num: numerator of the duty cycle ratio to be applied
+ * @den: denominator of the duty cycle ratio to be applied
+ *
+ * Adjust the duty cycle of a clock signal by the specified ratio. Returns 0 on
+ * success, -EERROR otherwise.
+ */
+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: clock signal source
+ * @scale: scaling factor to be applied to represent the ratio as an integer
+ *
+ * Returns the duty cycle ratio multiplied by the scale provided, otherwise
+ * returns -EERROR.
+ */
+int clk_get_scaled_duty_cycle(struct clk *clk, unsigned int scale);
+
+/**
  * clk_is_match - check if two clk's point to the same hardware clock
  * @p: clk compared against q
  * @q: clk compared against p
@@ -183,6 +204,18 @@ static inline long clk_get_phase(struct clk *clk)
 	return -ENOTSUPP;
 }
 
+static inline int clk_set_duty_cycle(struct clk *clk, unsigned int num,
+				     unsigned int den)
+{
+	return -ENOTSUPP;
+}
+
+static inline unsigned int clk_get_scaled_duty_cycle(struct clk *clk,
+						     unsigned int scale)
+{
+	return 0;
+}
+
 static inline bool clk_is_match(const struct clk *p, const struct clk *q)
 {
 	return p == q;
diff --git a/include/trace/events/clk.h b/include/trace/events/clk.h
index 2cd449328aee..9004ffff7f32 100644
--- a/include/trace/events/clk.h
+++ b/include/trace/events/clk.h
@@ -192,6 +192,42 @@ DEFINE_EVENT(clk_phase, clk_set_phase_complete,
 	TP_ARGS(core, phase)
 );
 
+DECLARE_EVENT_CLASS(clk_duty_cycle,
+
+	TP_PROTO(struct clk_core *core, struct clk_duty *duty),
+
+	TP_ARGS(core, duty),
+
+	TP_STRUCT__entry(
+		__string(        name,           core->name              )
+		__field( unsigned int,           num                     )
+		__field( unsigned int,           den                     )
+	),
+
+	TP_fast_assign(
+		__assign_str(name, core->name);
+		__entry->num = duty->num;
+		__entry->den = duty->den;
+	),
+
+	TP_printk("%s %u/%u", __get_str(name), (unsigned int)__entry->num,
+		  (unsigned int)__entry->den)
+);
+
+DEFINE_EVENT(clk_duty_cycle, clk_set_duty_cycle,
+
+	TP_PROTO(struct clk_core *core, struct clk_duty *duty),
+
+	TP_ARGS(core, duty)
+);
+
+DEFINE_EVENT(clk_duty_cycle, clk_set_duty_cycle_complete,
+
+	TP_PROTO(struct clk_core *core, struct clk_duty *duty),
+
+	TP_ARGS(core, duty)
+);
+
 #endif /* _TRACE_CLK_H */
 
 /* This part must be outside protection */