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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 20:18:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 20:18:12 -0700
commit0eff4589c36edd03d50b835d0768b2c2ef3f20bd (patch)
treef0a08e7ed4dac042d89d24bb4c79f66df70085ff /drivers/clk/clk-gpio.c
parent087afe8aaf562dc7a53f2577049830d6a3245742 (diff)
parentef56b79b66faeeb0dc14213d3cc9e0534a960dee (diff)
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd: "It's the usual big pile of driver updates and additions, but we do have a couple core changes in here as well. Core: - CLK_IS_CRITICAL support has been added. This should allow drivers to properly express that a certain clk should stay on even if their prepare/enable count drops to 0 (and in turn the parents of these clks should stay enabled). - A clk registration API has been added, clk_hw_register(), and an OF clk provider API has been added, of_clk_add_hw_provider(). These APIs have been put in place to further split clk providers from clk consumers, with the goal being to have clk providers never deal with struct clk pointers at all. Conversion of provider drivers is on going. clkdev has also gained support for registering clk_hw pointers directly so we can convert drivers that don't use devicetree. New Drivers: - Marvell ap806 and cp110 system controllers (with clks inside!) - Hisilicon Hi3519 clock and reset controller - Axis ARTPEC-6 clock controllers - Oxford Semiconductor OXNAS clock controllers - AXS10X I2S PLL - Rockchip RK3399 clock and reset controller Updates: - MMC2 and UART2 clks on Samsung Exynos 3250, ACLK on Samsung Exynos 542x SoCs, and some more clk ID exporting for bus frequency scaling - Proper BCM2835 PCM clk support and various other clks - i.MX clk updates for i.MX6SX, i.MX7, and VF610 - Renesas updates for R-Car H3 - Tegra210 got updates for DisplayPort and HDMI 2.0 - Rockchip driver refactorings and fixes due to adding RK3399 support" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (139 commits) clk: fix critical clock locking clk: qcom: mmcc-8996: Remove clocks that should be controlled by RPM clk: ingenic: Allow divider value to be divided clk: sunxi: Add display and TCON0 clocks driver clk: rockchip: drop old_rate calculation on pll rate changes clk: rockchip: simplify GRF handling in pll clocks clk: rockchip: lookup General Register Files in rockchip_clk_init clk: rockchip: fix the rk3399 sdmmc sample / drv name clk: mvebu: new driver for Armada CP110 system controller dt-bindings: arm: add DT binding for Marvell CP110 system controller clk: mvebu: new driver for Armada AP806 system controller clk: hisilicon: add CRG driver for hi3519 soc clk: hisilicon: export some hisilicon APIs to modules reset: hisilicon: add reset controller driver for hisilicon SOCs clk: bcm/kona: Do not use sizeof on pointer type clk: qcom: msm8916: Fix crypto clock flags clk: nxp: lpc18xx: Initialize clk_init_data::flags to 0 clk/axs10x: Add I2S PLL clock driver clk: imx7d: fix ahb clock mux 1 clk: fix comment of devm_clk_hw_register() ...
Diffstat (limited to 'drivers/clk/clk-gpio.c')
-rw-r--r--drivers/clk/clk-gpio.c52
1 files changed, 41 insertions, 11 deletions
diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c
index 08f65acc5d57..86b245746a6b 100644
--- a/drivers/clk/clk-gpio.c
+++ b/drivers/clk/clk-gpio.c
@@ -94,13 +94,13 @@ const struct clk_ops clk_gpio_mux_ops = {
};
EXPORT_SYMBOL_GPL(clk_gpio_mux_ops);
-static struct clk *clk_register_gpio(struct device *dev, const char *name,
+static struct clk_hw *clk_register_gpio(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents, unsigned gpio,
bool active_low, unsigned long flags,
const struct clk_ops *clk_gpio_ops)
{
struct clk_gpio *clk_gpio;
- struct clk *clk;
+ struct clk_hw *hw;
struct clk_init_data init = {};
unsigned long gpio_flags;
int err;
@@ -141,24 +141,26 @@ static struct clk *clk_register_gpio(struct device *dev, const char *name,
clk_gpio->gpiod = gpio_to_desc(gpio);
clk_gpio->hw.init = &init;
+ hw = &clk_gpio->hw;
if (dev)
- clk = devm_clk_register(dev, &clk_gpio->hw);
+ err = devm_clk_hw_register(dev, hw);
else
- clk = clk_register(NULL, &clk_gpio->hw);
+ err = clk_hw_register(NULL, hw);
- if (!IS_ERR(clk))
- return clk;
+ if (!err)
+ return hw;
if (!dev) {
gpiod_put(clk_gpio->gpiod);
kfree(clk_gpio);
}
- return clk;
+ return ERR_PTR(err);
}
/**
- * clk_register_gpio_gate - register a gpio clock gate with the clock framework
+ * clk_hw_register_gpio_gate - register a gpio clock gate with the clock
+ * framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_name: name of this clock's parent
@@ -166,7 +168,7 @@ static struct clk *clk_register_gpio(struct device *dev, const char *name,
* @active_low: true if gpio should be set to 0 to enable clock
* @flags: clock flags
*/
-struct clk *clk_register_gpio_gate(struct device *dev, const char *name,
+struct clk_hw *clk_hw_register_gpio_gate(struct device *dev, const char *name,
const char *parent_name, unsigned gpio, bool active_low,
unsigned long flags)
{
@@ -175,10 +177,24 @@ struct clk *clk_register_gpio_gate(struct device *dev, const char *name,
(parent_name ? 1 : 0), gpio, active_low, flags,
&clk_gpio_gate_ops);
}
+EXPORT_SYMBOL_GPL(clk_hw_register_gpio_gate);
+
+struct clk *clk_register_gpio_gate(struct device *dev, const char *name,
+ const char *parent_name, unsigned gpio, bool active_low,
+ unsigned long flags)
+{
+ struct clk_hw *hw;
+
+ hw = clk_hw_register_gpio_gate(dev, name, parent_name, gpio, active_low,
+ flags);
+ if (IS_ERR(hw))
+ return ERR_CAST(hw);
+ return hw->clk;
+}
EXPORT_SYMBOL_GPL(clk_register_gpio_gate);
/**
- * clk_register_gpio_mux - register a gpio clock mux with the clock framework
+ * clk_hw_register_gpio_mux - register a gpio clock mux with the clock framework
* @dev: device that is registering this clock
* @name: name of this clock
* @parent_names: names of this clock's parents
@@ -187,7 +203,7 @@ EXPORT_SYMBOL_GPL(clk_register_gpio_gate);
* @active_low: true if gpio should be set to 0 to enable clock
* @flags: clock flags
*/
-struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
+struct clk_hw *clk_hw_register_gpio_mux(struct device *dev, const char *name,
const char * const *parent_names, u8 num_parents, unsigned gpio,
bool active_low, unsigned long flags)
{
@@ -199,6 +215,20 @@ struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
return clk_register_gpio(dev, name, parent_names, num_parents,
gpio, active_low, flags, &clk_gpio_mux_ops);
}
+EXPORT_SYMBOL_GPL(clk_hw_register_gpio_mux);
+
+struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
+ const char * const *parent_names, u8 num_parents, unsigned gpio,
+ bool active_low, unsigned long flags)
+{
+ struct clk_hw *hw;
+
+ hw = clk_hw_register_gpio_mux(dev, name, parent_names, num_parents,
+ gpio, active_low, flags);
+ if (IS_ERR(hw))
+ return ERR_CAST(hw);
+ return hw->clk;
+}
EXPORT_SYMBOL_GPL(clk_register_gpio_mux);
static int gpio_clk_driver_probe(struct platform_device *pdev)