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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Browse Source 
Pull clk updates from Stephen Boyd:
 "This time we've got one core change to introduce a bulk clk_get API,
  some new clk drivers and updates for old ones. The diff is pretty
  spread out across a handful of different SoC clk drivers for Broadcom,
  TI, Qualcomm, Renesas, Rockchip, Samsung, and Allwinner, mostly due to
  the introduction of new drivers.

  Core:
   - New clk bulk get APIs
   - Clk divider APIs gained the ability to consider a different parent
     than the current one

  New Drivers:
   - Renesas r8a779{0,1,2,4} CPG/MSSR
   - TI Keystone SCI firmware controlled clks and OMAP4 clkctrl
   - Qualcomm IPQ8074 SoCs
   - Cortina Systems Gemini (SL3516/CS3516)
   - Rockchip rk3128 SoCs
   - Allwinner A83T clk control units
   - Broadcom Stingray SoCs
   - CPU clks for Mediatek MT8173/MT2701/MT7623 SoCs

  Removed Drivers:
   - Old non-DT version of the Realview clk driver

  Updates:
   - Renesas Kconfig/Makefile cleanups
   - Amlogic CEC EE clk support
   - Improved Armada 7K/8K cp110 clk support
   - Rockchip clk id exposing, critical clk markings
   - Samsung converted to clk_hw registration APIs
   - Fixes for Samsung exynos5420 audio clks
   - USB2 clks for Hisilicon hi3798cv200 SoC and video/camera clks for
     hi3660"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (147 commits)
  clk: gemini: Read status before using the value
  clk: scpi: error when clock fails to register
  clk: at91: Add sama5d2 suspend/resume
  gpio: dt-bindings: Add documentation for gpio controllers on Armada 7K/8K
  clk: keystone: TI_SCI_PROTOCOL is needed for clk driver
  clk: samsung: audss: Fix silent hang on Exynos4412 due to disabled EPLL
  clk: uniphier: provide NAND controller clock rate
  clk: hisilicon: add usb2 clocks for hi3798cv200 SoC
  clk: Add Gemini SoC clock controller
  clk: iproc: Remove __init marking on iproc_pll_clk_setup()
  clk: bcm: Add clocks for Stingray SOC
  dt-bindings: clk: Extend binding doc for Stingray SOC
  clk: mediatek: export cpu multiplexer clock for MT8173 SoCs
  clk: mediatek: export cpu multiplexer clock for MT2701/MT7623 SoCs
  clk: mediatek: add missing cpu mux causing Mediatek cpufreq can't work
  clk: renesas: cpg-mssr: Use of_device_get_match_data() helper
  clk: hi6220: add acpu clock
  clk: zx296718: export I2S mux clocks
  clk: imx7d: create clocks behind rawnand clock gate
  clk: hi3660: Set PPLL2 to 2880M
  ...
This commit is contained in:
Linus Torvalds
2017-07-07 12:26:13 -07:00
parent dd6ec12f3b 3cf50f6b13
commit dddd564dbb
145 changed files with 10477 additions and 1030 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
include/linux/clk-provider.h
View File

@@ -412,9 +412,10 @@ extern const struct clk_ops clk_divider_ro_ops;
unsigned long divider_recalc_rate(struct clk_hw *hw, unsigned long parent_rate,
unsigned int val, const struct clk_div_table *table,
unsigned long flags);
long divider_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate, const struct clk_div_table *table,
u8 width, unsigned long flags);
long divider_round_rate_parent(struct clk_hw *hw, struct clk_hw *parent,
unsigned long rate, unsigned long *prate,
const struct clk_div_table *table,
u8 width, unsigned long flags);
int divider_get_val(unsigned long rate, unsigned long parent_rate,
const struct clk_div_table *table, u8 width,
unsigned long flags);
@@ -757,6 +758,15 @@ static inline void __clk_hw_set_clk(struct clk_hw *dst, struct clk_hw *src)
dst->core = src->core;
}
static inline long divider_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate,
const struct clk_div_table *table,
u8 width, unsigned long flags)
{
return divider_round_rate_parent(hw, clk_hw_get_parent(hw),
rate, prate, table, width, flags);
}
/*
* FIXME clock api without lock protection
*/

136
include/linux/clk.h
View File

@@ -77,6 +77,21 @@ struct clk_notifier_data {
unsigned long new_rate;
};
/**
* struct clk_bulk_data - Data used for bulk clk operations.
*
* @id: clock consumer ID
* @clk: struct clk * to store the associated clock
*
* The CLK APIs provide a series of clk_bulk_() API calls as
* a convenience to consumers which require multiple clks. This
* structure is used to manage data for these calls.
*/
struct clk_bulk_data {
const char *id;
struct clk *clk;
};
#ifdef CONFIG_COMMON_CLK
/**
@@ -185,12 +200,20 @@ static inline bool clk_is_match(const struct clk *p, const struct clk *q)
*/
#ifdef CONFIG_HAVE_CLK_PREPARE
int clk_prepare(struct clk *clk);
int __must_check clk_bulk_prepare(int num_clks,
const struct clk_bulk_data *clks);
#else
static inline int clk_prepare(struct clk *clk)
{
might_sleep();
return 0;
}
static inline int clk_bulk_prepare(int num_clks, struct clk_bulk_data *clks)
{
might_sleep();
return 0;
}
#endif
/**
@@ -204,11 +227,16 @@ static inline int clk_prepare(struct clk *clk)
*/
#ifdef CONFIG_HAVE_CLK_PREPARE
void clk_unprepare(struct clk *clk);
void clk_bulk_unprepare(int num_clks, const struct clk_bulk_data *clks);
#else
static inline void clk_unprepare(struct clk *clk)
{
might_sleep();
}
static inline void clk_bulk_unprepare(int num_clks, struct clk_bulk_data *clks)
{
might_sleep();
}
#endif
#ifdef CONFIG_HAVE_CLK
@@ -229,6 +257,44 @@ static inline void clk_unprepare(struct clk *clk)
*/
struct clk *clk_get(struct device *dev, const char *id);
/**
* clk_bulk_get - lookup and obtain a number of references to clock producer.
* @dev: device for clock "consumer"
* @num_clks: the number of clk_bulk_data
* @clks: the clk_bulk_data table of consumer
*
* This helper function allows drivers to get several clk consumers in one
* operation. If any of the clk cannot be acquired then any clks
* that were obtained will be freed before returning to the caller.
*
* Returns 0 if all clocks specified in clk_bulk_data table are obtained
* successfully, or valid IS_ERR() condition containing errno.
* The implementation uses @dev and @clk_bulk_data.id to determine the
* clock consumer, and thereby the clock producer.
* The clock returned is stored in each @clk_bulk_data.clk field.
*
* Drivers must assume that the clock source is not enabled.
*
* clk_bulk_get should not be called from within interrupt context.
*/
int __must_check clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks);
/**
* devm_clk_bulk_get - managed get multiple clk consumers
* @dev: device for clock "consumer"
* @num_clks: the number of clk_bulk_data
* @clks: the clk_bulk_data table of consumer
*
* Return 0 on success, an errno on failure.
*
* This helper function allows drivers to get several clk
* consumers in one operation with management, the clks will
* automatically be freed when the device is unbound.
*/
int __must_check devm_clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks);
/**
* devm_clk_get - lookup and obtain a managed reference to a clock producer.
* @dev: device for clock "consumer"
@@ -278,6 +344,18 @@ struct clk *devm_get_clk_from_child(struct device *dev,
*/
int clk_enable(struct clk *clk);
/**
* clk_bulk_enable - inform the system when the set of clks should be running.
* @num_clks: the number of clk_bulk_data
* @clks: the clk_bulk_data table of consumer
*
* May be called from atomic contexts.
*
* Returns success (0) or negative errno.
*/
int __must_check clk_bulk_enable(int num_clks,
const struct clk_bulk_data *clks);
/**
* clk_disable - inform the system when the clock source is no longer required.
* @clk: clock source
@@ -294,6 +372,24 @@ int clk_enable(struct clk *clk);
*/
void clk_disable(struct clk *clk);
/**
* clk_bulk_disable - inform the system when the set of clks is no
* longer required.
* @num_clks: the number of clk_bulk_data
* @clks: the clk_bulk_data table of consumer
*
* Inform the system that a set of clks is no longer required by
* a driver and may be shut down.
*
* May be called from atomic contexts.
*
* Implementation detail: if the set of clks is shared between
* multiple drivers, clk_bulk_enable() calls must be balanced by the
* same number of clk_bulk_disable() calls for the clock source to be
* disabled.
*/
void clk_bulk_disable(int num_clks, const struct clk_bulk_data *clks);
/**
* clk_get_rate - obtain the current clock rate (in Hz) for a clock source.
* This is only valid once the clock source has been enabled.
@@ -313,6 +409,19 @@ unsigned long clk_get_rate(struct clk *clk);
*/
void clk_put(struct clk *clk);
/**
* clk_bulk_put - "free" the clock source
* @num_clks: the number of clk_bulk_data
* @clks: the clk_bulk_data table of consumer
*
* Note: drivers must ensure that all clk_bulk_enable calls made on this
* clock source are balanced by clk_bulk_disable calls prior to calling
* this function.
*
* clk_bulk_put should not be called from within interrupt context.
*/
void clk_bulk_put(int num_clks, struct clk_bulk_data *clks);
/**
* devm_clk_put - "free" a managed clock source
* @dev: device used to acquire the clock
@@ -445,11 +554,23 @@ static inline struct clk *clk_get(struct device *dev, const char *id)
return NULL;
}
static inline int clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks)
{
return 0;
}
static inline struct clk *devm_clk_get(struct device *dev, const char *id)
{
return NULL;
}
static inline int devm_clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks)
{
return 0;
}
static inline struct clk *devm_get_clk_from_child(struct device *dev,
struct device_node *np, const char *con_id)
{
@@ -458,6 +579,8 @@ static inline struct clk *devm_get_clk_from_child(struct device *dev,
static inline void clk_put(struct clk *clk) {}
static inline void clk_bulk_put(int num_clks, struct clk_bulk_data *clks) {}
static inline void devm_clk_put(struct device *dev, struct clk *clk) {}
static inline int clk_enable(struct clk *clk)
@@ -465,8 +588,17 @@ static inline int clk_enable(struct clk *clk)
return 0;
}
static inline int clk_bulk_enable(int num_clks, struct clk_bulk_data *clks)
{
return 0;
}
static inline void clk_disable(struct clk *clk) {}
static inline void clk_bulk_disable(int num_clks,
struct clk_bulk_data *clks) {}
static inline unsigned long clk_get_rate(struct clk *clk)
{
return 0;
@@ -539,6 +671,10 @@ static inline struct clk *of_clk_get_by_name(struct device_node *np,
{
return ERR_PTR(-ENOENT);
}
static inline struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec)
{
return ERR_PTR(-ENOENT);
}
#endif
#endif

1
include/linux/platform_data/clk-realview.h
View File

@@ -1 +0,0 @@
void realview_clk_init(void __iomem *sysbase, bool is_pb1176);