* [PATCH v2] clk: gpio: Make into a platform driver
@ 2016-02-03 21:10 Stephen Boyd
2016-02-05 0:24 ` Michael Turquette
2016-02-06 19:18 ` Jyri Sarha
0 siblings, 2 replies; 3+ messages in thread
From: Stephen Boyd @ 2016-02-03 21:10 UTC (permalink / raw)
To: Mike Turquette, Stephen Boyd
Cc: linux-kernel, "linux-arm-kernel, Jyri Sarha, Sergej Sawazki,
Russell King, Fabio Estevam, Jon Nettleton, Shawn Guo
clk_get() for DT based clks already returns EPROBE_DEFER when the
OF clk provider is not present. So having all this code in the
clk provider to return EPROBE_DEFER when the gpio isn't ready yet
can be replaced with a platform driver that doesn't add the clk
provider until the gpio can be requested. Get rid of the
OF_CLK_DECLARE and convert this to a platform driver instead.
Cc: Jyri Sarha <jsarha@ti.com>
Cc: Sergej Sawazki <ce3a@gmx.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Jon Nettleton <jon@solid-run.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
Changes from v1:
* Fix build error by removing unused module device table
drivers/clk/clk-gpio.c | 165 ++++++++++++++++---------------------------------
1 file changed, 52 insertions(+), 113 deletions(-)
diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c
index cbbea2985cc9..fb32a7366ef6 100644
--- a/drivers/clk/clk-gpio.c
+++ b/drivers/clk/clk-gpio.c
@@ -20,6 +20,8 @@
#include <linux/of_gpio.h>
#include <linux/err.h>
#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/of_device.h>
/**
* DOC: basic gpio gated clock which can be enabled and disabled
@@ -199,134 +201,71 @@ struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
}
EXPORT_SYMBOL_GPL(clk_register_gpio_mux);
-#ifdef CONFIG_OF
-/**
- * clk_register_get() has to be delayed, because -EPROBE_DEFER
- * can not be handled properly at of_clk_init() call time.
- */
-
-struct clk_gpio_delayed_register_data {
- const char *gpio_name;
- int num_parents;
- const char **parent_names;
- struct device_node *node;
- struct mutex lock;
- struct clk *clk;
- struct clk *(*clk_register_get)(const char *name,
- const char * const *parent_names, u8 num_parents,
- unsigned gpio, bool active_low);
-};
-
-static struct clk *of_clk_gpio_delayed_register_get(
- struct of_phandle_args *clkspec, void *_data)
+static int gpio_clk_driver_probe(struct platform_device *pdev)
{
- struct clk_gpio_delayed_register_data *data = _data;
- struct clk *clk;
- int gpio;
+ struct device_node *node = pdev->dev.of_node;
+ const char **parent_names, *gpio_name;
+ int num_parents, gpio;
enum of_gpio_flags of_flags;
+ struct clk *clk;
+ bool active_low, is_mux;
+
+ num_parents = of_clk_get_parent_count(node);
+ if (num_parents < 0)
+ return -EINVAL;
- mutex_lock(&data->lock);
+ if (num_parents) {
+ parent_names = devm_kcalloc(&pdev->dev, num_parents,
+ sizeof(char *), GFP_KERNEL);
+ if (!parent_names)
+ return -ENOMEM;
- if (data->clk) {
- mutex_unlock(&data->lock);
- return data->clk;
+ of_clk_parent_fill(node, parent_names, num_parents);
+ } else {
+ parent_names = NULL;
}
- gpio = of_get_named_gpio_flags(data->node, data->gpio_name, 0,
- &of_flags);
+ is_mux = of_device_is_compatible(node, "gpio-mux-clock");
+
+ gpio_name = is_mux ? "select-gpios" : "enable-gpios";
+ gpio = of_get_named_gpio_flags(node, gpio_name, 0, &of_flags);
if (gpio < 0) {
- mutex_unlock(&data->lock);
if (gpio == -EPROBE_DEFER)
pr_debug("%s: %s: GPIOs not yet available, retry later\n",
- data->node->name, __func__);
+ node->name, __func__);
else
pr_err("%s: %s: Can't get '%s' DT property\n",
- data->node->name, __func__,
- data->gpio_name);
- return ERR_PTR(gpio);
+ node->name, __func__,
+ gpio_name);
+ return gpio;
}
- clk = data->clk_register_get(data->node->name, data->parent_names,
- data->num_parents, gpio, of_flags & OF_GPIO_ACTIVE_LOW);
- if (IS_ERR(clk))
- goto out;
-
- data->clk = clk;
-out:
- mutex_unlock(&data->lock);
-
- return clk;
-}
-
-static struct clk *of_clk_gpio_gate_delayed_register_get(const char *name,
- const char * const *parent_names, u8 num_parents,
- unsigned gpio, bool active_low)
-{
- return clk_register_gpio_gate(NULL, name, parent_names ?
- parent_names[0] : NULL, gpio, active_low, 0);
-}
-
-static struct clk *of_clk_gpio_mux_delayed_register_get(const char *name,
- const char * const *parent_names, u8 num_parents, unsigned gpio,
- bool active_low)
-{
- return clk_register_gpio_mux(NULL, name, parent_names, num_parents,
- gpio, active_low, 0);
-}
-
-static void __init of_gpio_clk_setup(struct device_node *node,
- const char *gpio_name,
- struct clk *(*clk_register_get)(const char *name,
- const char * const *parent_names,
- u8 num_parents,
- unsigned gpio, bool active_low))
-{
- struct clk_gpio_delayed_register_data *data;
- const char **parent_names;
- int i, num_parents;
-
- num_parents = of_clk_get_parent_count(node);
- if (num_parents < 0)
- return;
-
- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (!data)
- return;
+ active_low = of_flags & OF_GPIO_ACTIVE_LOW;
- if (num_parents) {
- parent_names = kcalloc(num_parents, sizeof(char *), GFP_KERNEL);
- if (!parent_names) {
- kfree(data);
- return;
- }
-
- for (i = 0; i < num_parents; i++)
- parent_names[i] = of_clk_get_parent_name(node, i);
- } else {
- parent_names = NULL;
- }
-
- data->num_parents = num_parents;
- data->parent_names = parent_names;
- data->node = node;
- data->gpio_name = gpio_name;
- data->clk_register_get = clk_register_get;
- mutex_init(&data->lock);
+ if (is_mux)
+ clk = clk_register_gpio_mux(&pdev->dev, node->name,
+ parent_names, num_parents, gpio, active_low, 0);
+ else
+ clk = clk_register_gpio_gate(&pdev->dev, node->name,
+ parent_names ? parent_names[0] : NULL, gpio,
+ active_low, 0);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
- of_clk_add_provider(node, of_clk_gpio_delayed_register_get, data);
+ return of_clk_add_provider(node, of_clk_src_simple_get, clk);
}
-static void __init of_gpio_gate_clk_setup(struct device_node *node)
-{
- of_gpio_clk_setup(node, "enable-gpios",
- of_clk_gpio_gate_delayed_register_get);
-}
-CLK_OF_DECLARE(gpio_gate_clk, "gpio-gate-clock", of_gpio_gate_clk_setup);
+static const struct of_device_id gpio_clk_match_table[] = {
+ { .compatible = "gpio-mux-clock" },
+ { .compatible = "gpio-gate-clock" },
+ { }
+};
-void __init of_gpio_mux_clk_setup(struct device_node *node)
-{
- of_gpio_clk_setup(node, "select-gpios",
- of_clk_gpio_mux_delayed_register_get);
-}
-CLK_OF_DECLARE(gpio_mux_clk, "gpio-mux-clock", of_gpio_mux_clk_setup);
-#endif
+static struct platform_driver gpio_clk_driver = {
+ .probe = gpio_clk_driver_probe,
+ .driver = {
+ .name = "gpio-clk",
+ .of_match_table = gpio_clk_match_table,
+ },
+};
+builtin_platform_driver(gpio_clk_driver);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v2] clk: gpio: Make into a platform driver
2016-02-03 21:10 [PATCH v2] clk: gpio: Make into a platform driver Stephen Boyd
@ 2016-02-05 0:24 ` Michael Turquette
2016-02-06 19:18 ` Jyri Sarha
1 sibling, 0 replies; 3+ messages in thread
From: Michael Turquette @ 2016-02-05 0:24 UTC (permalink / raw)
To: Stephen Boyd
Cc: Linux Kernel Mailing List, "linux-arm-kernel, Jyri Sarha,
Sergej Sawazki, Russell King, Fabio Estevam, Jon Nettleton,
Shawn Guo
On Wed, Feb 3, 2016 at 1:10 PM, Stephen Boyd <sboyd@codeaurora.org> wrote:
>
> clk_get() for DT based clks already returns EPROBE_DEFER when the
> OF clk provider is not present. So having all this code in the
> clk provider to return EPROBE_DEFER when the gpio isn't ready yet
> can be replaced with a platform driver that doesn't add the clk
> provider until the gpio can be requested. Get rid of the
> OF_CLK_DECLARE and convert this to a platform driver instead.
>
> Cc: Jyri Sarha <jsarha@ti.com>
> Cc: Sergej Sawazki <ce3a@gmx.de>
> Cc: Russell King <rmk+kernel@arm.linux.org.uk>
> Cc: Fabio Estevam <fabio.estevam@freescale.com>
> Cc: Jon Nettleton <jon@solid-run.com>
> Cc: Shawn Guo <shawn.guo@linaro.org>
> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Looks good to me.
Regards,
Mike
> ---
>
> Changes from v1:
> * Fix build error by removing unused module device table
>
> drivers/clk/clk-gpio.c | 165 ++++++++++++++++---------------------------------
> 1 file changed, 52 insertions(+), 113 deletions(-)
>
> diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c
> index cbbea2985cc9..fb32a7366ef6 100644
> --- a/drivers/clk/clk-gpio.c
> +++ b/drivers/clk/clk-gpio.c
> @@ -20,6 +20,8 @@
> #include <linux/of_gpio.h>
> #include <linux/err.h>
> #include <linux/device.h>
> +#include <linux/platform_device.h>
> +#include <linux/of_device.h>
>
> /**
> * DOC: basic gpio gated clock which can be enabled and disabled
> @@ -199,134 +201,71 @@ struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
> }
> EXPORT_SYMBOL_GPL(clk_register_gpio_mux);
>
> -#ifdef CONFIG_OF
> -/**
> - * clk_register_get() has to be delayed, because -EPROBE_DEFER
> - * can not be handled properly at of_clk_init() call time.
> - */
> -
> -struct clk_gpio_delayed_register_data {
> - const char *gpio_name;
> - int num_parents;
> - const char **parent_names;
> - struct device_node *node;
> - struct mutex lock;
> - struct clk *clk;
> - struct clk *(*clk_register_get)(const char *name,
> - const char * const *parent_names, u8 num_parents,
> - unsigned gpio, bool active_low);
> -};
> -
> -static struct clk *of_clk_gpio_delayed_register_get(
> - struct of_phandle_args *clkspec, void *_data)
> +static int gpio_clk_driver_probe(struct platform_device *pdev)
> {
> - struct clk_gpio_delayed_register_data *data = _data;
> - struct clk *clk;
> - int gpio;
> + struct device_node *node = pdev->dev.of_node;
> + const char **parent_names, *gpio_name;
> + int num_parents, gpio;
> enum of_gpio_flags of_flags;
> + struct clk *clk;
> + bool active_low, is_mux;
> +
> + num_parents = of_clk_get_parent_count(node);
> + if (num_parents < 0)
> + return -EINVAL;
>
> - mutex_lock(&data->lock);
> + if (num_parents) {
> + parent_names = devm_kcalloc(&pdev->dev, num_parents,
> + sizeof(char *), GFP_KERNEL);
> + if (!parent_names)
> + return -ENOMEM;
>
> - if (data->clk) {
> - mutex_unlock(&data->lock);
> - return data->clk;
> + of_clk_parent_fill(node, parent_names, num_parents);
> + } else {
> + parent_names = NULL;
> }
>
> - gpio = of_get_named_gpio_flags(data->node, data->gpio_name, 0,
> - &of_flags);
> + is_mux = of_device_is_compatible(node, "gpio-mux-clock");
> +
> + gpio_name = is_mux ? "select-gpios" : "enable-gpios";
> + gpio = of_get_named_gpio_flags(node, gpio_name, 0, &of_flags);
> if (gpio < 0) {
> - mutex_unlock(&data->lock);
> if (gpio == -EPROBE_DEFER)
> pr_debug("%s: %s: GPIOs not yet available, retry later\n",
> - data->node->name, __func__);
> + node->name, __func__);
> else
> pr_err("%s: %s: Can't get '%s' DT property\n",
> - data->node->name, __func__,
> - data->gpio_name);
> - return ERR_PTR(gpio);
> + node->name, __func__,
> + gpio_name);
> + return gpio;
> }
>
> - clk = data->clk_register_get(data->node->name, data->parent_names,
> - data->num_parents, gpio, of_flags & OF_GPIO_ACTIVE_LOW);
> - if (IS_ERR(clk))
> - goto out;
> -
> - data->clk = clk;
> -out:
> - mutex_unlock(&data->lock);
> -
> - return clk;
> -}
> -
> -static struct clk *of_clk_gpio_gate_delayed_register_get(const char *name,
> - const char * const *parent_names, u8 num_parents,
> - unsigned gpio, bool active_low)
> -{
> - return clk_register_gpio_gate(NULL, name, parent_names ?
> - parent_names[0] : NULL, gpio, active_low, 0);
> -}
> -
> -static struct clk *of_clk_gpio_mux_delayed_register_get(const char *name,
> - const char * const *parent_names, u8 num_parents, unsigned gpio,
> - bool active_low)
> -{
> - return clk_register_gpio_mux(NULL, name, parent_names, num_parents,
> - gpio, active_low, 0);
> -}
> -
> -static void __init of_gpio_clk_setup(struct device_node *node,
> - const char *gpio_name,
> - struct clk *(*clk_register_get)(const char *name,
> - const char * const *parent_names,
> - u8 num_parents,
> - unsigned gpio, bool active_low))
> -{
> - struct clk_gpio_delayed_register_data *data;
> - const char **parent_names;
> - int i, num_parents;
> -
> - num_parents = of_clk_get_parent_count(node);
> - if (num_parents < 0)
> - return;
> -
> - data = kzalloc(sizeof(*data), GFP_KERNEL);
> - if (!data)
> - return;
> + active_low = of_flags & OF_GPIO_ACTIVE_LOW;
>
> - if (num_parents) {
> - parent_names = kcalloc(num_parents, sizeof(char *), GFP_KERNEL);
> - if (!parent_names) {
> - kfree(data);
> - return;
> - }
> -
> - for (i = 0; i < num_parents; i++)
> - parent_names[i] = of_clk_get_parent_name(node, i);
> - } else {
> - parent_names = NULL;
> - }
> -
> - data->num_parents = num_parents;
> - data->parent_names = parent_names;
> - data->node = node;
> - data->gpio_name = gpio_name;
> - data->clk_register_get = clk_register_get;
> - mutex_init(&data->lock);
> + if (is_mux)
> + clk = clk_register_gpio_mux(&pdev->dev, node->name,
> + parent_names, num_parents, gpio, active_low, 0);
> + else
> + clk = clk_register_gpio_gate(&pdev->dev, node->name,
> + parent_names ? parent_names[0] : NULL, gpio,
> + active_low, 0);
> + if (IS_ERR(clk))
> + return PTR_ERR(clk);
>
> - of_clk_add_provider(node, of_clk_gpio_delayed_register_get, data);
> + return of_clk_add_provider(node, of_clk_src_simple_get, clk);
> }
>
> -static void __init of_gpio_gate_clk_setup(struct device_node *node)
> -{
> - of_gpio_clk_setup(node, "enable-gpios",
> - of_clk_gpio_gate_delayed_register_get);
> -}
> -CLK_OF_DECLARE(gpio_gate_clk, "gpio-gate-clock", of_gpio_gate_clk_setup);
> +static const struct of_device_id gpio_clk_match_table[] = {
> + { .compatible = "gpio-mux-clock" },
> + { .compatible = "gpio-gate-clock" },
> + { }
> +};
>
> -void __init of_gpio_mux_clk_setup(struct device_node *node)
> -{
> - of_gpio_clk_setup(node, "select-gpios",
> - of_clk_gpio_mux_delayed_register_get);
> -}
> -CLK_OF_DECLARE(gpio_mux_clk, "gpio-mux-clock", of_gpio_mux_clk_setup);
> -#endif
> +static struct platform_driver gpio_clk_driver = {
> + .probe = gpio_clk_driver_probe,
> + .driver = {
> + .name = "gpio-clk",
> + .of_match_table = gpio_clk_match_table,
> + },
> +};
> +builtin_platform_driver(gpio_clk_driver);
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
--
Michael Turquette
CEO
BayLibre - At the Heart of Embedded Linux
http://baylibre.com/
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v2] clk: gpio: Make into a platform driver
2016-02-03 21:10 [PATCH v2] clk: gpio: Make into a platform driver Stephen Boyd
2016-02-05 0:24 ` Michael Turquette
@ 2016-02-06 19:18 ` Jyri Sarha
1 sibling, 0 replies; 3+ messages in thread
From: Jyri Sarha @ 2016-02-06 19:18 UTC (permalink / raw)
To: Stephen Boyd, Mike Turquette
Cc: linux-kernel, "linux-arm-kernel, Sergej Sawazki, Russell King,
Fabio Estevam, Jon Nettleton, Shawn Guo
On 02/03/16 23:10, Stephen Boyd wrote:
> clk_get() for DT based clks already returns EPROBE_DEFER when the
> OF clk provider is not present. So having all this code in the
> clk provider to return EPROBE_DEFER when the gpio isn't ready yet
> can be replaced with a platform driver that doesn't add the clk
> provider until the gpio can be requested. Get rid of the
> OF_CLK_DECLARE and convert this to a platform driver instead.
>
> Cc: Jyri Sarha <jsarha@ti.com>
> Cc: Sergej Sawazki <ce3a@gmx.de>
> Cc: Russell King <rmk+kernel@arm.linux.org.uk>
> Cc: Fabio Estevam <fabio.estevam@freescale.com>
> Cc: Jon Nettleton <jon@solid-run.com>
> Cc: Shawn Guo <shawn.guo@linaro.org>
> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The gate clock works for Beaglebone-black HDMI audio.
Tested-by: Jyri Sarha <jsarha@ti.com>
> ---
>
> Changes from v1:
> * Fix build error by removing unused module device table
>
> drivers/clk/clk-gpio.c | 165 ++++++++++++++++---------------------------------
> 1 file changed, 52 insertions(+), 113 deletions(-)
>
> diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c
> index cbbea2985cc9..fb32a7366ef6 100644
> --- a/drivers/clk/clk-gpio.c
> +++ b/drivers/clk/clk-gpio.c
> @@ -20,6 +20,8 @@
> #include <linux/of_gpio.h>
> #include <linux/err.h>
> #include <linux/device.h>
> +#include <linux/platform_device.h>
> +#include <linux/of_device.h>
>
> /**
> * DOC: basic gpio gated clock which can be enabled and disabled
> @@ -199,134 +201,71 @@ struct clk *clk_register_gpio_mux(struct device *dev, const char *name,
> }
> EXPORT_SYMBOL_GPL(clk_register_gpio_mux);
>
> -#ifdef CONFIG_OF
> -/**
> - * clk_register_get() has to be delayed, because -EPROBE_DEFER
> - * can not be handled properly at of_clk_init() call time.
> - */
> -
> -struct clk_gpio_delayed_register_data {
> - const char *gpio_name;
> - int num_parents;
> - const char **parent_names;
> - struct device_node *node;
> - struct mutex lock;
> - struct clk *clk;
> - struct clk *(*clk_register_get)(const char *name,
> - const char * const *parent_names, u8 num_parents,
> - unsigned gpio, bool active_low);
> -};
> -
> -static struct clk *of_clk_gpio_delayed_register_get(
> - struct of_phandle_args *clkspec, void *_data)
> +static int gpio_clk_driver_probe(struct platform_device *pdev)
> {
> - struct clk_gpio_delayed_register_data *data = _data;
> - struct clk *clk;
> - int gpio;
> + struct device_node *node = pdev->dev.of_node;
> + const char **parent_names, *gpio_name;
> + int num_parents, gpio;
> enum of_gpio_flags of_flags;
> + struct clk *clk;
> + bool active_low, is_mux;
> +
> + num_parents = of_clk_get_parent_count(node);
> + if (num_parents < 0)
> + return -EINVAL;
>
> - mutex_lock(&data->lock);
> + if (num_parents) {
> + parent_names = devm_kcalloc(&pdev->dev, num_parents,
> + sizeof(char *), GFP_KERNEL);
> + if (!parent_names)
> + return -ENOMEM;
>
> - if (data->clk) {
> - mutex_unlock(&data->lock);
> - return data->clk;
> + of_clk_parent_fill(node, parent_names, num_parents);
> + } else {
> + parent_names = NULL;
> }
>
> - gpio = of_get_named_gpio_flags(data->node, data->gpio_name, 0,
> - &of_flags);
> + is_mux = of_device_is_compatible(node, "gpio-mux-clock");
> +
> + gpio_name = is_mux ? "select-gpios" : "enable-gpios";
> + gpio = of_get_named_gpio_flags(node, gpio_name, 0, &of_flags);
> if (gpio < 0) {
> - mutex_unlock(&data->lock);
> if (gpio == -EPROBE_DEFER)
> pr_debug("%s: %s: GPIOs not yet available, retry later\n",
> - data->node->name, __func__);
> + node->name, __func__);
> else
> pr_err("%s: %s: Can't get '%s' DT property\n",
> - data->node->name, __func__,
> - data->gpio_name);
> - return ERR_PTR(gpio);
> + node->name, __func__,
> + gpio_name);
> + return gpio;
> }
>
> - clk = data->clk_register_get(data->node->name, data->parent_names,
> - data->num_parents, gpio, of_flags & OF_GPIO_ACTIVE_LOW);
> - if (IS_ERR(clk))
> - goto out;
> -
> - data->clk = clk;
> -out:
> - mutex_unlock(&data->lock);
> -
> - return clk;
> -}
> -
> -static struct clk *of_clk_gpio_gate_delayed_register_get(const char *name,
> - const char * const *parent_names, u8 num_parents,
> - unsigned gpio, bool active_low)
> -{
> - return clk_register_gpio_gate(NULL, name, parent_names ?
> - parent_names[0] : NULL, gpio, active_low, 0);
> -}
> -
> -static struct clk *of_clk_gpio_mux_delayed_register_get(const char *name,
> - const char * const *parent_names, u8 num_parents, unsigned gpio,
> - bool active_low)
> -{
> - return clk_register_gpio_mux(NULL, name, parent_names, num_parents,
> - gpio, active_low, 0);
> -}
> -
> -static void __init of_gpio_clk_setup(struct device_node *node,
> - const char *gpio_name,
> - struct clk *(*clk_register_get)(const char *name,
> - const char * const *parent_names,
> - u8 num_parents,
> - unsigned gpio, bool active_low))
> -{
> - struct clk_gpio_delayed_register_data *data;
> - const char **parent_names;
> - int i, num_parents;
> -
> - num_parents = of_clk_get_parent_count(node);
> - if (num_parents < 0)
> - return;
> -
> - data = kzalloc(sizeof(*data), GFP_KERNEL);
> - if (!data)
> - return;
> + active_low = of_flags & OF_GPIO_ACTIVE_LOW;
>
> - if (num_parents) {
> - parent_names = kcalloc(num_parents, sizeof(char *), GFP_KERNEL);
> - if (!parent_names) {
> - kfree(data);
> - return;
> - }
> -
> - for (i = 0; i < num_parents; i++)
> - parent_names[i] = of_clk_get_parent_name(node, i);
> - } else {
> - parent_names = NULL;
> - }
> -
> - data->num_parents = num_parents;
> - data->parent_names = parent_names;
> - data->node = node;
> - data->gpio_name = gpio_name;
> - data->clk_register_get = clk_register_get;
> - mutex_init(&data->lock);
> + if (is_mux)
> + clk = clk_register_gpio_mux(&pdev->dev, node->name,
> + parent_names, num_parents, gpio, active_low, 0);
> + else
> + clk = clk_register_gpio_gate(&pdev->dev, node->name,
> + parent_names ? parent_names[0] : NULL, gpio,
> + active_low, 0);
> + if (IS_ERR(clk))
> + return PTR_ERR(clk);
>
> - of_clk_add_provider(node, of_clk_gpio_delayed_register_get, data);
> + return of_clk_add_provider(node, of_clk_src_simple_get, clk);
> }
>
> -static void __init of_gpio_gate_clk_setup(struct device_node *node)
> -{
> - of_gpio_clk_setup(node, "enable-gpios",
> - of_clk_gpio_gate_delayed_register_get);
> -}
> -CLK_OF_DECLARE(gpio_gate_clk, "gpio-gate-clock", of_gpio_gate_clk_setup);
> +static const struct of_device_id gpio_clk_match_table[] = {
> + { .compatible = "gpio-mux-clock" },
> + { .compatible = "gpio-gate-clock" },
> + { }
> +};
>
> -void __init of_gpio_mux_clk_setup(struct device_node *node)
> -{
> - of_gpio_clk_setup(node, "select-gpios",
> - of_clk_gpio_mux_delayed_register_get);
> -}
> -CLK_OF_DECLARE(gpio_mux_clk, "gpio-mux-clock", of_gpio_mux_clk_setup);
> -#endif
> +static struct platform_driver gpio_clk_driver = {
> + .probe = gpio_clk_driver_probe,
> + .driver = {
> + .name = "gpio-clk",
> + .of_match_table = gpio_clk_match_table,
> + },
> +};
> +builtin_platform_driver(gpio_clk_driver);
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2016-02-06 19:19 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-02-03 21:10 [PATCH v2] clk: gpio: Make into a platform driver Stephen Boyd
2016-02-05 0:24 ` Michael Turquette
2016-02-06 19:18 ` Jyri Sarha
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