[1/5] clk: max77686: Combine Maxim max77686 and max77802 driver
diff mbox

Message ID 1466000018-16784-2-git-send-email-ldewangan@nvidia.com
State Not Applicable
Headers show

Commit Message

Laxman Dewangan June 15, 2016, 2:13 p.m. UTC
The clock IP used on the Maxim PMICs max77686 and max77802 are
same. The configuration of clock register is also same except
the number of clocks.

Part of common code utilisation, there is 3 files for these chips
clock driver, one for common and two files for driver registration.

Combine both drivers into single file and move common code into
same common file reduces the 2 files and make max77686 and max77802
clock driver in single fine. This driver does not depends on the
parent driver structure. The regmap handle is acquired through
regmap APIs for the register access.

This combination of driver helps on adding clock driver for different
Maxim PMICs which has similar clock IP like MAX77620 and MAX20024.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
CC: Javier Martinez Canillas <javier@dowhile0.org>
---
 drivers/clk/Kconfig        |  15 +--
 drivers/clk/Makefile       |   2 -
 drivers/clk/clk-max-gen.c  | 194 ------------------------------------
 drivers/clk/clk-max-gen.h  |  32 ------
 drivers/clk/clk-max77686.c | 241 +++++++++++++++++++++++++++++++++++++++++----
 drivers/clk/clk-max77802.c |  96 ------------------
 6 files changed, 225 insertions(+), 355 deletions(-)
 delete mode 100644 drivers/clk/clk-max-gen.c
 delete mode 100644 drivers/clk/clk-max-gen.h
 delete mode 100644 drivers/clk/clk-max77802.c

Comments

Javier Martinez Canillas June 15, 2016, 3:12 p.m. UTC | #1
Hello Laxman,

On 06/15/2016 10:13 AM, Laxman Dewangan wrote:
> The clock IP used on the Maxim PMICs max77686 and max77802 are
> same. The configuration of clock register is also same except
> the number of clocks.
> 
> Part of common code utilisation, there is 3 files for these chips
> clock driver, one for common and two files for driver registration.
> 
> Combine both drivers into single file and move common code into
> same common file reduces the 2 files and make max77686 and max77802
> clock driver in single fine. This driver does not depends on the
> parent driver structure. The regmap handle is acquired through
> regmap APIs for the register access.
> 
> This combination of driver helps on adding clock driver for different
> Maxim PMICs which has similar clock IP like MAX77620 and MAX20024.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
> CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> CC: Javier Martinez Canillas <javier@dowhile0.org>
> ---

[snip]

> diff --git a/drivers/clk/clk-max77686.c b/drivers/clk/clk-max77686.c
> index 9b6f277..31ba726 100644
> --- a/drivers/clk/clk-max77686.c
> +++ b/drivers/clk/clk-max77686.c
> @@ -1,5 +1,5 @@
>  /*
> - * clk-max77686.c - Clock driver for Maxim 77686
> + * clk-max77686.c - Clock driver for Maxim 77686/MAX77802
>   *
>   * Copyright (C) 2012 Samsung Electornics
>   * Jonghwa Lee <jonghwa3.lee@samsung.com>
> @@ -13,13 +13,7 @@
>   * but WITHOUT ANY WARRANTY; without even the implied warranty of
>   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>   * GNU General Public License for more details.
> - *
> - * You should have received a copy of the GNU General Public License
> - * along with this program; if not, write to the Free Software
> - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
> - *
>   */
> -

I think removing this part of the header is correct but it should be a
separate patch.

[snip]

> +
> +struct max_gen_hw_clk_data {
> +	const char *name;
> +	u32 reg;
> +	u32 mask;
> +	u32 flags;
> +};
> +
> +struct max_gen_clk_data {
> +	struct regmap *regmap;
> +	struct clk_init_data clk_idata;
> +	struct clk_hw hw;
> +	u32 reg;
> +	u32 mask;
> +};
> +

Probably now makes more sense to rename all the "max_gen_foo" structs and
functions to just "max77686_foo" since now are all defined in the max77686
so that naming is more consistent.

Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>

I also tested on an Exynos5800 Peach Pi Chromebook that has a max77802 IP:

Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>

Best regards,
kbuild test robot June 15, 2016, 3:35 p.m. UTC | #2
Hi,

[auto build test WARNING on next-20160615]
[also build test WARNING on v4.7-rc3]
[cannot apply to clk/clk-next robh/for-next v4.7-rc3 v4.7-rc2 v4.7-rc1]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Laxman-Dewangan/clk-Combine-MAX77686-and-MAX77802-driver-and-extend-for-MAX77620/20160615-223243


coccinelle warnings: (new ones prefixed by >>)

>> drivers/clk/clk-max77686.c:177:2-3: Unneeded semicolon

Please review and possibly fold the followup patch.

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Krzysztof Kozlowski June 16, 2016, 9:31 a.m. UTC | #3
Hi,

First, thank for the work. Looks promising! Few comments below.

On 06/15/2016 04:13 PM, Laxman Dewangan wrote:
> The clock IP used on the Maxim PMICs max77686 and max77802 are
> same. The configuration of clock register is also same except
> the number of clocks.
> 
> Part of common code utilisation, there is 3 files for these chips
> clock driver, one for common and two files for driver registration.
> 
> Combine both drivers into single file and move common code into
> same common file reduces the 2 files and make max77686 and max77802
> clock driver in single fine. This driver does not depends on the
> parent driver structure. The regmap handle is acquired through
> regmap APIs for the register access.
> 
> This combination of driver helps on adding clock driver for different
> Maxim PMICs which has similar clock IP like MAX77620 and MAX20024.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
> CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> CC: Javier Martinez Canillas <javier@dowhile0.org>
> ---
>  drivers/clk/Kconfig        |  15 +--
>  drivers/clk/Makefile       |   2 -
>  drivers/clk/clk-max-gen.c  | 194 ------------------------------------
>  drivers/clk/clk-max-gen.h  |  32 ------
>  drivers/clk/clk-max77686.c | 241 +++++++++++++++++++++++++++++++++++++++++----
>  drivers/clk/clk-max77802.c |  96 ------------------
>  6 files changed, 225 insertions(+), 355 deletions(-)
>  delete mode 100644 drivers/clk/clk-max-gen.c
>  delete mode 100644 drivers/clk/clk-max-gen.h
>  delete mode 100644 drivers/clk/clk-max77802.c
> 
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index 98efbfc..6afad74 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -31,22 +31,11 @@ config COMMON_CLK_WM831X
>  
>  source "drivers/clk/versatile/Kconfig"
>  
> -config COMMON_CLK_MAX_GEN
> -        bool
> -
>  config COMMON_CLK_MAX77686
> -	tristate "Clock driver for Maxim 77686 MFD"
> -	depends on MFD_MAX77686
> -	select COMMON_CLK_MAX_GEN
> -	---help---
> -	  This driver supports Maxim 77686 crystal oscillator clock. 
> -
> -config COMMON_CLK_MAX77802
> -	tristate "Clock driver for Maxim 77802 PMIC"
> +	tristate "Clock driver for Maxim 77686/77802 MFD"
>  	depends on MFD_MAX77686
> -	select COMMON_CLK_MAX_GEN
>  	---help---
> -	  This driver supports Maxim 77802 crystal oscillator clock.
> +	  This driver supports Maxim 77686/77802 crystal oscillator clock.
>  
>  config COMMON_CLK_RK808
>  	tristate "Clock driver for RK808"
> diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
> index dcc5e69..0a3a91b 100644
> --- a/drivers/clk/Makefile
> +++ b/drivers/clk/Makefile
> @@ -26,9 +26,7 @@ obj-$(CONFIG_ARCH_CLPS711X)		+= clk-clps711x.o
>  obj-$(CONFIG_ARCH_EFM32)		+= clk-efm32gg.o
>  obj-$(CONFIG_ARCH_HIGHBANK)		+= clk-highbank.o
>  obj-$(CONFIG_MACH_LOONGSON32)		+= clk-ls1x.o
> -obj-$(CONFIG_COMMON_CLK_MAX_GEN)	+= clk-max-gen.o
>  obj-$(CONFIG_COMMON_CLK_MAX77686)	+= clk-max77686.o
> -obj-$(CONFIG_COMMON_CLK_MAX77802)	+= clk-max77802.o
>  obj-$(CONFIG_ARCH_MB86S7X)		+= clk-mb86s7x.o
>  obj-$(CONFIG_ARCH_MOXART)		+= clk-moxart.o
>  obj-$(CONFIG_ARCH_NOMADIK)		+= clk-nomadik.o
> diff --git a/drivers/clk/clk-max-gen.c b/drivers/clk/clk-max-gen.c
> deleted file mode 100644
> index 35af9cb..0000000
> --- a/drivers/clk/clk-max-gen.c
> +++ /dev/null
> @@ -1,194 +0,0 @@
> -/*
> - * clk-max-gen.c - Generic clock driver for Maxim PMICs clocks
> - *
> - * Copyright (C) 2014 Google, Inc
> - *
> - * Copyright (C) 2012 Samsung Electornics
> - * Jonghwa Lee <jonghwa3.lee@samsung.com>
> - *
> - * This program is free software; you can redistribute  it and/or modify it
> - * under  the terms of  the GNU General  Public License as published by the
> - * Free Software Foundation;  either version 2 of the  License, or (at your
> - * option) any later version.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> - * GNU General Public License for more details.
> - *
> - * This driver is based on clk-max77686.c
> - *
> - */
> -
> -#include <linux/kernel.h>
> -#include <linux/slab.h>
> -#include <linux/err.h>
> -#include <linux/regmap.h>
> -#include <linux/platform_device.h>
> -#include <linux/clk-provider.h>
> -#include <linux/mutex.h>
> -#include <linux/clkdev.h>
> -#include <linux/of.h>
> -#include <linux/export.h>
> -
> -#include "clk-max-gen.h"
> -
> -struct max_gen_clk {
> -	struct regmap *regmap;
> -	u32 mask;
> -	u32 reg;
> -	struct clk_hw hw;
> -};
> -
> -static struct max_gen_clk *to_max_gen_clk(struct clk_hw *hw)
> -{
> -	return container_of(hw, struct max_gen_clk, hw);
> -}
> -
> -static int max_gen_clk_prepare(struct clk_hw *hw)
> -{
> -	struct max_gen_clk *max_gen = to_max_gen_clk(hw);
> -
> -	return regmap_update_bits(max_gen->regmap, max_gen->reg,
> -				  max_gen->mask, max_gen->mask);
> -}
> -
> -static void max_gen_clk_unprepare(struct clk_hw *hw)
> -{
> -	struct max_gen_clk *max_gen = to_max_gen_clk(hw);
> -
> -	regmap_update_bits(max_gen->regmap, max_gen->reg,
> -			   max_gen->mask, ~max_gen->mask);
> -}
> -
> -static int max_gen_clk_is_prepared(struct clk_hw *hw)
> -{
> -	struct max_gen_clk *max_gen = to_max_gen_clk(hw);
> -	int ret;
> -	u32 val;
> -
> -	ret = regmap_read(max_gen->regmap, max_gen->reg, &val);
> -
> -	if (ret < 0)
> -		return -EINVAL;
> -
> -	return val & max_gen->mask;
> -}
> -
> -static unsigned long max_gen_recalc_rate(struct clk_hw *hw,
> -					 unsigned long parent_rate)
> -{
> -	return 32768;
> -}
> -
> -struct clk_ops max_gen_clk_ops = {
> -	.prepare	= max_gen_clk_prepare,
> -	.unprepare	= max_gen_clk_unprepare,
> -	.is_prepared	= max_gen_clk_is_prepared,
> -	.recalc_rate	= max_gen_recalc_rate,
> -};
> -EXPORT_SYMBOL_GPL(max_gen_clk_ops);
> -
> -static struct clk *max_gen_clk_register(struct device *dev,
> -					struct max_gen_clk *max_gen)
> -{
> -	struct clk *clk;
> -	struct clk_hw *hw = &max_gen->hw;
> -	int ret;
> -
> -	clk = devm_clk_register(dev, hw);
> -	if (IS_ERR(clk))
> -		return clk;
> -
> -	ret = clk_register_clkdev(clk, hw->init->name, NULL);
> -
> -	if (ret)
> -		return ERR_PTR(ret);
> -
> -	return clk;
> -}
> -
> -int max_gen_clk_probe(struct platform_device *pdev, struct regmap *regmap,
> -		      u32 reg, struct clk_init_data *clks_init, int num_init)
> -{
> -	int i, ret;
> -	struct max_gen_clk *max_gen_clks;
> -	struct clk **clocks;
> -	struct device *dev = pdev->dev.parent;
> -	const char *clk_name;
> -	struct clk_init_data *init;
> -
> -	clocks = devm_kzalloc(dev, sizeof(struct clk *) * num_init, GFP_KERNEL);
> -	if (!clocks)
> -		return -ENOMEM;
> -
> -	max_gen_clks = devm_kzalloc(dev, sizeof(struct max_gen_clk)
> -				    * num_init, GFP_KERNEL);
> -	if (!max_gen_clks)
> -		return -ENOMEM;
> -
> -	for (i = 0; i < num_init; i++) {
> -		max_gen_clks[i].regmap = regmap;
> -		max_gen_clks[i].mask = 1 << i;
> -		max_gen_clks[i].reg = reg;
> -
> -		init = devm_kzalloc(dev, sizeof(*init), GFP_KERNEL);
> -		if (!init)
> -			return -ENOMEM;
> -
> -		if (dev->of_node &&
> -		    !of_property_read_string_index(dev->of_node,
> -						   "clock-output-names",
> -						   i, &clk_name))
> -			init->name = clk_name;
> -		else
> -			init->name = clks_init[i].name;
> -
> -		init->ops = clks_init[i].ops;
> -		init->flags = clks_init[i].flags;
> -
> -		max_gen_clks[i].hw.init = init;
> -
> -		clocks[i] = max_gen_clk_register(dev, &max_gen_clks[i]);
> -		if (IS_ERR(clocks[i])) {
> -			ret = PTR_ERR(clocks[i]);
> -			dev_err(dev, "failed to register %s\n",
> -				max_gen_clks[i].hw.init->name);
> -			return ret;
> -		}
> -	}
> -
> -	platform_set_drvdata(pdev, clocks);
> -
> -	if (dev->of_node) {
> -		struct clk_onecell_data *of_data;
> -
> -		of_data = devm_kzalloc(dev, sizeof(*of_data), GFP_KERNEL);
> -		if (!of_data)
> -			return -ENOMEM;
> -
> -		of_data->clks = clocks;
> -		of_data->clk_num = num_init;
> -		ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
> -					  of_data);
> -
> -		if (ret) {
> -			dev_err(dev, "failed to register OF clock provider\n");
> -			return ret;
> -		}
> -	}
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL_GPL(max_gen_clk_probe);
> -
> -int max_gen_clk_remove(struct platform_device *pdev, int num_init)
> -{
> -	struct device *dev = pdev->dev.parent;
> -
> -	if (dev->of_node)
> -		of_clk_del_provider(dev->of_node);
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL_GPL(max_gen_clk_remove);
> diff --git a/drivers/clk/clk-max-gen.h b/drivers/clk/clk-max-gen.h
> deleted file mode 100644
> index 997e86f..0000000
> --- a/drivers/clk/clk-max-gen.h
> +++ /dev/null
> @@ -1,32 +0,0 @@
> -/*
> - * clk-max-gen.h - Generic clock driver for Maxim PMICs clocks
> - *
> - * Copyright (C) 2014 Google, Inc
> - *
> - * This program is free software; you can redistribute  it and/or modify it
> - * under  the terms of  the GNU General  Public License as published by the
> - * Free Software Foundation;  either version 2 of the  License, or (at your
> - * option) any later version.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> - * GNU General Public License for more details.
> - *
> - */
> -
> -#ifndef __CLK_MAX_GEN_H__
> -#define __CLK_MAX_GEN_H__
> -
> -#include <linux/types.h>
> -#include <linux/device.h>
> -#include <linux/clkdev.h>
> -#include <linux/regmap.h>
> -#include <linux/platform_device.h>
> -
> -int max_gen_clk_probe(struct platform_device *pdev, struct regmap *regmap,
> -		      u32 reg, struct clk_init_data *clks_init, int num_init);
> -int max_gen_clk_remove(struct platform_device *pdev, int num_init);
> -extern struct clk_ops max_gen_clk_ops;
> -
> -#endif /* __CLK_MAX_GEN_H__ */
> diff --git a/drivers/clk/clk-max77686.c b/drivers/clk/clk-max77686.c
> index 9b6f277..31ba726 100644
> --- a/drivers/clk/clk-max77686.c
> +++ b/drivers/clk/clk-max77686.c
> @@ -1,5 +1,5 @@
>  /*
> - * clk-max77686.c - Clock driver for Maxim 77686
> + * clk-max77686.c - Clock driver for Maxim 77686/MAX77802
>   *
>   * Copyright (C) 2012 Samsung Electornics
>   * Jonghwa Lee <jonghwa3.lee@samsung.com>
> @@ -13,13 +13,7 @@
>   * but WITHOUT ANY WARRANTY; without even the implied warranty of
>   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>   * GNU General Public License for more details.
> - *
> - * You should have received a copy of the GNU General Public License
> - * along with this program; if not, write to the Free Software
> - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
> - *
>   */
> -
>  #include <linux/kernel.h>
>  #include <linux/slab.h>
>  #include <linux/err.h>
> @@ -30,41 +24,252 @@
>  #include <linux/clk-provider.h>
>  #include <linux/mutex.h>
>  #include <linux/clkdev.h>
> +#include <linux/of.h>
> +#include <linux/regmap.h>
> +#include <linux/mutex.h>
>  
>  #include <dt-bindings/clock/maxim,max77686.h>
> -#include "clk-max-gen.h"
> +#include <dt-bindings/clock/maxim,max77802.h>
>  
> -static struct clk_init_data max77686_clks_init[MAX77686_CLKS_NUM] = {
> +#define MAX77802_CLOCK_LOW_JITTER_SHIFT 0x3
> +
> +enum chip_name {
> +	CHIP_MAX77686,
> +	CHIP_MAX77802,
> +};

No need for these. Just use existing enum max77686_types.

> +
> +struct max_gen_hw_clk_data {
> +	const char *name;
> +	u32 reg;
> +	u32 mask;
> +	u32 flags;
> +};
> +
> +struct max_gen_clk_data {
> +	struct regmap *regmap;
> +	struct clk_init_data clk_idata;
> +	struct clk_hw hw;
> +	u32 reg;
> +	u32 mask;

Why do you need reg and mask here? This looks overcomplicated. Both the
names are too similar and the structures duplicate some fields.

For the names, how about:
 - max77686_gen_init_data
 - max77686_clk
?


> +};
> +
> +struct max_gen_clk_driver_info {
> +	enum chip_name chip;
> +	struct clk **clks;
> +	struct max_gen_clk_data *max_clk_data;
> +	struct clk_onecell_data of_data;
> +};
> +
> +static struct max_gen_hw_clk_data max77686_hw_clks_info[MAX77686_CLKS_NUM] = {

This looks const.

>  	[MAX77686_CLK_AP] = {
>  		.name = "32khz_ap",
> -		.ops = &max_gen_clk_ops,
> +		.reg = MAX77686_REG_32KHZ,
> +		.mask = BIT(MAX77686_CLK_AP),
>  	},
>  	[MAX77686_CLK_CP] = {
>  		.name = "32khz_cp",
> -		.ops = &max_gen_clk_ops,
> +		.reg = MAX77686_REG_32KHZ,
> +		.mask = BIT(MAX77686_CLK_CP),
>  	},
>  	[MAX77686_CLK_PMIC] = {
>  		.name = "32khz_pmic",
> -		.ops = &max_gen_clk_ops,
> +		.reg = MAX77686_REG_32KHZ,
> +		.mask = BIT(MAX77686_CLK_PMIC),
> +	},
> +};
> +
> +static struct max_gen_hw_clk_data max77802_hw_clks_info[MAX77802_CLKS_NUM] = {
> +	[MAX77802_CLK_32K_AP] = {
> +		.name = "32khz_ap",
> +		.reg = MAX77802_REG_32KHZ,
> +		.mask = BIT(MAX77802_CLK_32K_AP),
> +	},
> +	[MAX77802_CLK_32K_CP] = {
> +		.name = "32khz_cp",
> +		.reg = MAX77802_REG_32KHZ,
> +		.mask = BIT(MAX77802_CLK_32K_CP),
>  	},
>  };
>  
> +static struct max_gen_clk_data *to_max_gen_clk_data(struct clk_hw *hw)
> +{
> +	return container_of(hw, struct max_gen_clk_data, hw);
> +}
> +
> +static int max_gen_clk_prepare(struct clk_hw *hw)
> +{
> +	struct max_gen_clk_data *max_gen = to_max_gen_clk_data(hw);
> +
> +	return regmap_update_bits(max_gen->regmap, max_gen->reg,
> +				  max_gen->mask, max_gen->mask);
> +}
> +
> +static void max_gen_clk_unprepare(struct clk_hw *hw)
> +{
> +	struct max_gen_clk_data *max_gen = to_max_gen_clk_data(hw);
> +
> +	regmap_update_bits(max_gen->regmap, max_gen->reg,
> +			   max_gen->mask, ~max_gen->mask);
> +}
> +
> +static int max_gen_clk_is_prepared(struct clk_hw *hw)
> +{
> +	struct max_gen_clk_data *max_gen = to_max_gen_clk_data(hw);
> +	int ret;
> +	u32 val;
> +
> +	ret = regmap_read(max_gen->regmap, max_gen->reg, &val);
> +
> +	if (ret < 0)
> +		return -EINVAL;
> +
> +	return val & max_gen->mask;
> +}
> +
> +static unsigned long max_gen_recalc_rate(struct clk_hw *hw,
> +					 unsigned long parent_rate)
> +{
> +	return 32768;
> +}
> +
> +static struct clk_ops max_gen_clk_ops = {
> +	.prepare	= max_gen_clk_prepare,
> +	.unprepare	= max_gen_clk_unprepare,
> +	.is_prepared	= max_gen_clk_is_prepared,
> +	.recalc_rate	= max_gen_recalc_rate,
> +};
> +
>  static int max77686_clk_probe(struct platform_device *pdev)
>  {
> -	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
> +	struct device *parent = pdev->dev.parent;

parent = dev->parent;

> +	struct device *dev = &pdev->dev;
> +	const struct platform_device_id *id = platform_get_device_id(pdev);
> +	struct max_gen_clk_driver_info *drv_info;
> +	struct max_gen_clk_data *max_clk_data;

This looks local to for loop, so place it there.

> +	const struct max_gen_hw_clk_data *hw_clks;
> +	struct regmap *regmap;
> +	int i, ret, num_clks;
> +
> +	drv_info = devm_kzalloc(dev, sizeof(*drv_info), GFP_KERNEL);
> +	if (!drv_info)
> +		return -ENOMEM;
> +
> +	regmap = dev_get_regmap(parent, NULL);
> +	if (!regmap) {
> +		dev_err(dev, "Failed to get rtc regmap\n");
> +		return -ENODEV;
> +	}
> +
> +	drv_info->chip = id->driver_data;
> +
> +	switch (drv_info->chip) {
> +	case CHIP_MAX77686:
> +		num_clks = MAX77686_CLKS_NUM;
> +		hw_clks = max77686_hw_clks_info;
> +		break;
> +	case CHIP_MAX77802:
> +		num_clks = MAX77802_CLKS_NUM;
> +		hw_clks = max77802_hw_clks_info;
> +		break;
> +	default:
> +		dev_err(dev, "Unknown Chip ID\n");
> +		return -EINVAL;
> +	};
>  
> -	return max_gen_clk_probe(pdev, iodev->regmap, MAX77686_REG_32KHZ,
> -				 max77686_clks_init, MAX77686_CLKS_NUM);
> +	drv_info->max_clk_data = devm_kcalloc(dev, num_clks,
> +					      sizeof(*drv_info->max_clk_data),
> +					      GFP_KERNEL);
> +	if (!drv_info->max_clk_data)
> +		return -ENOMEM;
> +
> +	drv_info->clks = devm_kcalloc(dev, num_clks,
> +				      sizeof(*drv_info->clks), GFP_KERNEL);
> +	if (!drv_info->clks)
> +		return -ENOMEM;
> +
> +	for (i = 0; i < num_clks; i++) {
> +		struct clk *clk;
> +		const char *clk_name;
> +
> +		max_clk_data = &drv_info->max_clk_data[i];
> +
> +		max_clk_data->regmap = regmap;
> +		max_clk_data->mask = hw_clks[i].mask;
> +		max_clk_data->reg = hw_clks[i].reg;
> +		max_clk_data->clk_idata.flags = hw_clks[i].flags;
> +		max_clk_data->clk_idata.ops = &max_gen_clk_ops;
> +
> +		if (parent->of_node &&
> +		    !of_property_read_string_index(parent->of_node,
> +						   "clock-output-names",
> +						   i, &clk_name))
> +			max_clk_data->clk_idata.name = clk_name;
> +		else
> +			max_clk_data->clk_idata.name = hw_clks[i].name;
> +
> +		max_clk_data->hw.init = &max_clk_data->clk_idata;
> +
> +		clk = devm_clk_register(dev, &max_clk_data->hw);
> +		if (IS_ERR(clk)) {
> +			ret = PTR_ERR(clk);
> +			dev_err(dev, "Failed to clock register: %d\n", ret);
> +			return ret;
> +		}
> +
> +		ret = clk_register_clkdev(clk, max_clk_data->clk_idata.name,
> +					  NULL);
> +		if (ret < 0) {
> +			dev_err(dev, "Failed to clkdev register: %d\n", ret);
> +			return ret;
> +		}
> +		drv_info->clks[i] = clk;
> +	}
> +
> +	platform_set_drvdata(pdev, drv_info);
> +
> +	if (parent->of_node) {
> +		drv_info->of_data.clks = drv_info->clks;
> +		drv_info->of_data.clk_num = num_clks;
> +		ret = of_clk_add_provider(parent->of_node,
> +					  of_clk_src_onecell_get,
> +					  &drv_info->of_data);
> +
> +		if (ret < 0) {
> +			dev_err(dev, "Failed to register OF clock provider: %d\n",
> +				ret);
> +			return ret;
> +		}
> +	}
> +
> +	/* MAX77802: Enable low-jitter mode on the 32khz clocks. */
> +	if (drv_info->chip == CHIP_MAX77802) {
> +		ret = regmap_update_bits(regmap, MAX77802_REG_32KHZ,
> +					 1 << MAX77802_CLOCK_LOW_JITTER_SHIFT,
> +					 1 << MAX77802_CLOCK_LOW_JITTER_SHIFT);
> +		if (ret < 0) {
> +			dev_err(dev, "Failed to set low-jitter mode: %d\n",
> +				ret);

Need a cleanup path:
	of_clk_del_provider(parent->of_node);

> +			return ret;
> +		}
> +	}
> +
> +	return 0;
>  }
>  
>  static int max77686_clk_remove(struct platform_device *pdev)
>  {
> -	return max_gen_clk_remove(pdev, MAX77686_CLKS_NUM);
> +	struct device *parent = pdev->dev.parent;
> +
> +	if (parent->of_node)
> +		of_clk_del_provider(parent->of_node);
> +
> +	return 0;
>  }
>  
>  static const struct platform_device_id max77686_clk_id[] = {
> -	{ "max77686-clk", 0},
> -	{ },
> +	{ "max77686-clk", .driver_data = (kernel_ulong_t)CHIP_MAX77686, },
> +	{ "max77802-clk", .driver_data = (kernel_ulong_t)CHIP_MAX77802, },

You don't need the cast.

Best regards,
Krzysztof
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Krzysztof Kozlowski June 16, 2016, 1:02 p.m. UTC | #4
On 06/15/2016 04:13 PM, Laxman Dewangan wrote:
> The clock IP used on the Maxim PMICs max77686 and max77802 are
> same. The configuration of clock register is also same except
> the number of clocks.
> 
> Part of common code utilisation, there is 3 files for these chips
> clock driver, one for common and two files for driver registration.
> 
> Combine both drivers into single file and move common code into
> same common file reduces the 2 files and make max77686 and max77802
> clock driver in single fine. This driver does not depends on the
> parent driver structure. The regmap handle is acquired through
> regmap APIs for the register access.
> 
> This combination of driver helps on adding clock driver for different
> Maxim PMICs which has similar clock IP like MAX77620 and MAX20024.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
> CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> CC: Javier Martinez Canillas <javier@dowhile0.org>
> ---
>  drivers/clk/Kconfig        |  15 +--
>  drivers/clk/Makefile       |   2 -
>  drivers/clk/clk-max-gen.c  | 194 ------------------------------------
>  drivers/clk/clk-max-gen.h  |  32 ------
>  drivers/clk/clk-max77686.c | 241 +++++++++++++++++++++++++++++++++++++++++----
>  drivers/clk/clk-max77802.c |  96 ------------------
>  6 files changed, 225 insertions(+), 355 deletions(-)
>  delete mode 100644 drivers/clk/clk-max-gen.c
>  delete mode 100644 drivers/clk/clk-max-gen.h
>  delete mode 100644 drivers/clk/clk-max77802.c

Tested on max77686 and max77802:
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

Best regards,
Krzysztof
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Patch
diff mbox

diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 98efbfc..6afad74 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -31,22 +31,11 @@  config COMMON_CLK_WM831X
 
 source "drivers/clk/versatile/Kconfig"
 
-config COMMON_CLK_MAX_GEN
-        bool
-
 config COMMON_CLK_MAX77686
-	tristate "Clock driver for Maxim 77686 MFD"
-	depends on MFD_MAX77686
-	select COMMON_CLK_MAX_GEN
-	---help---
-	  This driver supports Maxim 77686 crystal oscillator clock. 
-
-config COMMON_CLK_MAX77802
-	tristate "Clock driver for Maxim 77802 PMIC"
+	tristate "Clock driver for Maxim 77686/77802 MFD"
 	depends on MFD_MAX77686
-	select COMMON_CLK_MAX_GEN
 	---help---
-	  This driver supports Maxim 77802 crystal oscillator clock.
+	  This driver supports Maxim 77686/77802 crystal oscillator clock.
 
 config COMMON_CLK_RK808
 	tristate "Clock driver for RK808"
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index dcc5e69..0a3a91b 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -26,9 +26,7 @@  obj-$(CONFIG_ARCH_CLPS711X)		+= clk-clps711x.o
 obj-$(CONFIG_ARCH_EFM32)		+= clk-efm32gg.o
 obj-$(CONFIG_ARCH_HIGHBANK)		+= clk-highbank.o
 obj-$(CONFIG_MACH_LOONGSON32)		+= clk-ls1x.o
-obj-$(CONFIG_COMMON_CLK_MAX_GEN)	+= clk-max-gen.o
 obj-$(CONFIG_COMMON_CLK_MAX77686)	+= clk-max77686.o
-obj-$(CONFIG_COMMON_CLK_MAX77802)	+= clk-max77802.o
 obj-$(CONFIG_ARCH_MB86S7X)		+= clk-mb86s7x.o
 obj-$(CONFIG_ARCH_MOXART)		+= clk-moxart.o
 obj-$(CONFIG_ARCH_NOMADIK)		+= clk-nomadik.o
diff --git a/drivers/clk/clk-max-gen.c b/drivers/clk/clk-max-gen.c
deleted file mode 100644
index 35af9cb..0000000
--- a/drivers/clk/clk-max-gen.c
+++ /dev/null
@@ -1,194 +0,0 @@ 
-/*
- * clk-max-gen.c - Generic clock driver for Maxim PMICs clocks
- *
- * Copyright (C) 2014 Google, Inc
- *
- * Copyright (C) 2012 Samsung Electornics
- * Jonghwa Lee <jonghwa3.lee@samsung.com>
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * This driver is based on clk-max77686.c
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/regmap.h>
-#include <linux/platform_device.h>
-#include <linux/clk-provider.h>
-#include <linux/mutex.h>
-#include <linux/clkdev.h>
-#include <linux/of.h>
-#include <linux/export.h>
-
-#include "clk-max-gen.h"
-
-struct max_gen_clk {
-	struct regmap *regmap;
-	u32 mask;
-	u32 reg;
-	struct clk_hw hw;
-};
-
-static struct max_gen_clk *to_max_gen_clk(struct clk_hw *hw)
-{
-	return container_of(hw, struct max_gen_clk, hw);
-}
-
-static int max_gen_clk_prepare(struct clk_hw *hw)
-{
-	struct max_gen_clk *max_gen = to_max_gen_clk(hw);
-
-	return regmap_update_bits(max_gen->regmap, max_gen->reg,
-				  max_gen->mask, max_gen->mask);
-}
-
-static void max_gen_clk_unprepare(struct clk_hw *hw)
-{
-	struct max_gen_clk *max_gen = to_max_gen_clk(hw);
-
-	regmap_update_bits(max_gen->regmap, max_gen->reg,
-			   max_gen->mask, ~max_gen->mask);
-}
-
-static int max_gen_clk_is_prepared(struct clk_hw *hw)
-{
-	struct max_gen_clk *max_gen = to_max_gen_clk(hw);
-	int ret;
-	u32 val;
-
-	ret = regmap_read(max_gen->regmap, max_gen->reg, &val);
-
-	if (ret < 0)
-		return -EINVAL;
-
-	return val & max_gen->mask;
-}
-
-static unsigned long max_gen_recalc_rate(struct clk_hw *hw,
-					 unsigned long parent_rate)
-{
-	return 32768;
-}
-
-struct clk_ops max_gen_clk_ops = {
-	.prepare	= max_gen_clk_prepare,
-	.unprepare	= max_gen_clk_unprepare,
-	.is_prepared	= max_gen_clk_is_prepared,
-	.recalc_rate	= max_gen_recalc_rate,
-};
-EXPORT_SYMBOL_GPL(max_gen_clk_ops);
-
-static struct clk *max_gen_clk_register(struct device *dev,
-					struct max_gen_clk *max_gen)
-{
-	struct clk *clk;
-	struct clk_hw *hw = &max_gen->hw;
-	int ret;
-
-	clk = devm_clk_register(dev, hw);
-	if (IS_ERR(clk))
-		return clk;
-
-	ret = clk_register_clkdev(clk, hw->init->name, NULL);
-
-	if (ret)
-		return ERR_PTR(ret);
-
-	return clk;
-}
-
-int max_gen_clk_probe(struct platform_device *pdev, struct regmap *regmap,
-		      u32 reg, struct clk_init_data *clks_init, int num_init)
-{
-	int i, ret;
-	struct max_gen_clk *max_gen_clks;
-	struct clk **clocks;
-	struct device *dev = pdev->dev.parent;
-	const char *clk_name;
-	struct clk_init_data *init;
-
-	clocks = devm_kzalloc(dev, sizeof(struct clk *) * num_init, GFP_KERNEL);
-	if (!clocks)
-		return -ENOMEM;
-
-	max_gen_clks = devm_kzalloc(dev, sizeof(struct max_gen_clk)
-				    * num_init, GFP_KERNEL);
-	if (!max_gen_clks)
-		return -ENOMEM;
-
-	for (i = 0; i < num_init; i++) {
-		max_gen_clks[i].regmap = regmap;
-		max_gen_clks[i].mask = 1 << i;
-		max_gen_clks[i].reg = reg;
-
-		init = devm_kzalloc(dev, sizeof(*init), GFP_KERNEL);
-		if (!init)
-			return -ENOMEM;
-
-		if (dev->of_node &&
-		    !of_property_read_string_index(dev->of_node,
-						   "clock-output-names",
-						   i, &clk_name))
-			init->name = clk_name;
-		else
-			init->name = clks_init[i].name;
-
-		init->ops = clks_init[i].ops;
-		init->flags = clks_init[i].flags;
-
-		max_gen_clks[i].hw.init = init;
-
-		clocks[i] = max_gen_clk_register(dev, &max_gen_clks[i]);
-		if (IS_ERR(clocks[i])) {
-			ret = PTR_ERR(clocks[i]);
-			dev_err(dev, "failed to register %s\n",
-				max_gen_clks[i].hw.init->name);
-			return ret;
-		}
-	}
-
-	platform_set_drvdata(pdev, clocks);
-
-	if (dev->of_node) {
-		struct clk_onecell_data *of_data;
-
-		of_data = devm_kzalloc(dev, sizeof(*of_data), GFP_KERNEL);
-		if (!of_data)
-			return -ENOMEM;
-
-		of_data->clks = clocks;
-		of_data->clk_num = num_init;
-		ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
-					  of_data);
-
-		if (ret) {
-			dev_err(dev, "failed to register OF clock provider\n");
-			return ret;
-		}
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(max_gen_clk_probe);
-
-int max_gen_clk_remove(struct platform_device *pdev, int num_init)
-{
-	struct device *dev = pdev->dev.parent;
-
-	if (dev->of_node)
-		of_clk_del_provider(dev->of_node);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(max_gen_clk_remove);
diff --git a/drivers/clk/clk-max-gen.h b/drivers/clk/clk-max-gen.h
deleted file mode 100644
index 997e86f..0000000
--- a/drivers/clk/clk-max-gen.h
+++ /dev/null
@@ -1,32 +0,0 @@ 
-/*
- * clk-max-gen.h - Generic clock driver for Maxim PMICs clocks
- *
- * Copyright (C) 2014 Google, Inc
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef __CLK_MAX_GEN_H__
-#define __CLK_MAX_GEN_H__
-
-#include <linux/types.h>
-#include <linux/device.h>
-#include <linux/clkdev.h>
-#include <linux/regmap.h>
-#include <linux/platform_device.h>
-
-int max_gen_clk_probe(struct platform_device *pdev, struct regmap *regmap,
-		      u32 reg, struct clk_init_data *clks_init, int num_init);
-int max_gen_clk_remove(struct platform_device *pdev, int num_init);
-extern struct clk_ops max_gen_clk_ops;
-
-#endif /* __CLK_MAX_GEN_H__ */
diff --git a/drivers/clk/clk-max77686.c b/drivers/clk/clk-max77686.c
index 9b6f277..31ba726 100644
--- a/drivers/clk/clk-max77686.c
+++ b/drivers/clk/clk-max77686.c
@@ -1,5 +1,5 @@ 
 /*
- * clk-max77686.c - Clock driver for Maxim 77686
+ * clk-max77686.c - Clock driver for Maxim 77686/MAX77802
  *
  * Copyright (C) 2012 Samsung Electornics
  * Jonghwa Lee <jonghwa3.lee@samsung.com>
@@ -13,13 +13,7 @@ 
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
-
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/err.h>
@@ -30,41 +24,252 @@ 
 #include <linux/clk-provider.h>
 #include <linux/mutex.h>
 #include <linux/clkdev.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/mutex.h>
 
 #include <dt-bindings/clock/maxim,max77686.h>
-#include "clk-max-gen.h"
+#include <dt-bindings/clock/maxim,max77802.h>
 
-static struct clk_init_data max77686_clks_init[MAX77686_CLKS_NUM] = {
+#define MAX77802_CLOCK_LOW_JITTER_SHIFT 0x3
+
+enum chip_name {
+	CHIP_MAX77686,
+	CHIP_MAX77802,
+};
+
+struct max_gen_hw_clk_data {
+	const char *name;
+	u32 reg;
+	u32 mask;
+	u32 flags;
+};
+
+struct max_gen_clk_data {
+	struct regmap *regmap;
+	struct clk_init_data clk_idata;
+	struct clk_hw hw;
+	u32 reg;
+	u32 mask;
+};
+
+struct max_gen_clk_driver_info {
+	enum chip_name chip;
+	struct clk **clks;
+	struct max_gen_clk_data *max_clk_data;
+	struct clk_onecell_data of_data;
+};
+
+static struct max_gen_hw_clk_data max77686_hw_clks_info[MAX77686_CLKS_NUM] = {
 	[MAX77686_CLK_AP] = {
 		.name = "32khz_ap",
-		.ops = &max_gen_clk_ops,
+		.reg = MAX77686_REG_32KHZ,
+		.mask = BIT(MAX77686_CLK_AP),
 	},
 	[MAX77686_CLK_CP] = {
 		.name = "32khz_cp",
-		.ops = &max_gen_clk_ops,
+		.reg = MAX77686_REG_32KHZ,
+		.mask = BIT(MAX77686_CLK_CP),
 	},
 	[MAX77686_CLK_PMIC] = {
 		.name = "32khz_pmic",
-		.ops = &max_gen_clk_ops,
+		.reg = MAX77686_REG_32KHZ,
+		.mask = BIT(MAX77686_CLK_PMIC),
+	},
+};
+
+static struct max_gen_hw_clk_data max77802_hw_clks_info[MAX77802_CLKS_NUM] = {
+	[MAX77802_CLK_32K_AP] = {
+		.name = "32khz_ap",
+		.reg = MAX77802_REG_32KHZ,
+		.mask = BIT(MAX77802_CLK_32K_AP),
+	},
+	[MAX77802_CLK_32K_CP] = {
+		.name = "32khz_cp",
+		.reg = MAX77802_REG_32KHZ,
+		.mask = BIT(MAX77802_CLK_32K_CP),
 	},
 };
 
+static struct max_gen_clk_data *to_max_gen_clk_data(struct clk_hw *hw)
+{
+	return container_of(hw, struct max_gen_clk_data, hw);
+}
+
+static int max_gen_clk_prepare(struct clk_hw *hw)
+{
+	struct max_gen_clk_data *max_gen = to_max_gen_clk_data(hw);
+
+	return regmap_update_bits(max_gen->regmap, max_gen->reg,
+				  max_gen->mask, max_gen->mask);
+}
+
+static void max_gen_clk_unprepare(struct clk_hw *hw)
+{
+	struct max_gen_clk_data *max_gen = to_max_gen_clk_data(hw);
+
+	regmap_update_bits(max_gen->regmap, max_gen->reg,
+			   max_gen->mask, ~max_gen->mask);
+}
+
+static int max_gen_clk_is_prepared(struct clk_hw *hw)
+{
+	struct max_gen_clk_data *max_gen = to_max_gen_clk_data(hw);
+	int ret;
+	u32 val;
+
+	ret = regmap_read(max_gen->regmap, max_gen->reg, &val);
+
+	if (ret < 0)
+		return -EINVAL;
+
+	return val & max_gen->mask;
+}
+
+static unsigned long max_gen_recalc_rate(struct clk_hw *hw,
+					 unsigned long parent_rate)
+{
+	return 32768;
+}
+
+static struct clk_ops max_gen_clk_ops = {
+	.prepare	= max_gen_clk_prepare,
+	.unprepare	= max_gen_clk_unprepare,
+	.is_prepared	= max_gen_clk_is_prepared,
+	.recalc_rate	= max_gen_recalc_rate,
+};
+
 static int max77686_clk_probe(struct platform_device *pdev)
 {
-	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+	struct device *parent = pdev->dev.parent;
+	struct device *dev = &pdev->dev;
+	const struct platform_device_id *id = platform_get_device_id(pdev);
+	struct max_gen_clk_driver_info *drv_info;
+	struct max_gen_clk_data *max_clk_data;
+	const struct max_gen_hw_clk_data *hw_clks;
+	struct regmap *regmap;
+	int i, ret, num_clks;
+
+	drv_info = devm_kzalloc(dev, sizeof(*drv_info), GFP_KERNEL);
+	if (!drv_info)
+		return -ENOMEM;
+
+	regmap = dev_get_regmap(parent, NULL);
+	if (!regmap) {
+		dev_err(dev, "Failed to get rtc regmap\n");
+		return -ENODEV;
+	}
+
+	drv_info->chip = id->driver_data;
+
+	switch (drv_info->chip) {
+	case CHIP_MAX77686:
+		num_clks = MAX77686_CLKS_NUM;
+		hw_clks = max77686_hw_clks_info;
+		break;
+	case CHIP_MAX77802:
+		num_clks = MAX77802_CLKS_NUM;
+		hw_clks = max77802_hw_clks_info;
+		break;
+	default:
+		dev_err(dev, "Unknown Chip ID\n");
+		return -EINVAL;
+	};
 
-	return max_gen_clk_probe(pdev, iodev->regmap, MAX77686_REG_32KHZ,
-				 max77686_clks_init, MAX77686_CLKS_NUM);
+	drv_info->max_clk_data = devm_kcalloc(dev, num_clks,
+					      sizeof(*drv_info->max_clk_data),
+					      GFP_KERNEL);
+	if (!drv_info->max_clk_data)
+		return -ENOMEM;
+
+	drv_info->clks = devm_kcalloc(dev, num_clks,
+				      sizeof(*drv_info->clks), GFP_KERNEL);
+	if (!drv_info->clks)
+		return -ENOMEM;
+
+	for (i = 0; i < num_clks; i++) {
+		struct clk *clk;
+		const char *clk_name;
+
+		max_clk_data = &drv_info->max_clk_data[i];
+
+		max_clk_data->regmap = regmap;
+		max_clk_data->mask = hw_clks[i].mask;
+		max_clk_data->reg = hw_clks[i].reg;
+		max_clk_data->clk_idata.flags = hw_clks[i].flags;
+		max_clk_data->clk_idata.ops = &max_gen_clk_ops;
+
+		if (parent->of_node &&
+		    !of_property_read_string_index(parent->of_node,
+						   "clock-output-names",
+						   i, &clk_name))
+			max_clk_data->clk_idata.name = clk_name;
+		else
+			max_clk_data->clk_idata.name = hw_clks[i].name;
+
+		max_clk_data->hw.init = &max_clk_data->clk_idata;
+
+		clk = devm_clk_register(dev, &max_clk_data->hw);
+		if (IS_ERR(clk)) {
+			ret = PTR_ERR(clk);
+			dev_err(dev, "Failed to clock register: %d\n", ret);
+			return ret;
+		}
+
+		ret = clk_register_clkdev(clk, max_clk_data->clk_idata.name,
+					  NULL);
+		if (ret < 0) {
+			dev_err(dev, "Failed to clkdev register: %d\n", ret);
+			return ret;
+		}
+		drv_info->clks[i] = clk;
+	}
+
+	platform_set_drvdata(pdev, drv_info);
+
+	if (parent->of_node) {
+		drv_info->of_data.clks = drv_info->clks;
+		drv_info->of_data.clk_num = num_clks;
+		ret = of_clk_add_provider(parent->of_node,
+					  of_clk_src_onecell_get,
+					  &drv_info->of_data);
+
+		if (ret < 0) {
+			dev_err(dev, "Failed to register OF clock provider: %d\n",
+				ret);
+			return ret;
+		}
+	}
+
+	/* MAX77802: Enable low-jitter mode on the 32khz clocks. */
+	if (drv_info->chip == CHIP_MAX77802) {
+		ret = regmap_update_bits(regmap, MAX77802_REG_32KHZ,
+					 1 << MAX77802_CLOCK_LOW_JITTER_SHIFT,
+					 1 << MAX77802_CLOCK_LOW_JITTER_SHIFT);
+		if (ret < 0) {
+			dev_err(dev, "Failed to set low-jitter mode: %d\n",
+				ret);
+			return ret;
+		}
+	}
+
+	return 0;
 }
 
 static int max77686_clk_remove(struct platform_device *pdev)
 {
-	return max_gen_clk_remove(pdev, MAX77686_CLKS_NUM);
+	struct device *parent = pdev->dev.parent;
+
+	if (parent->of_node)
+		of_clk_del_provider(parent->of_node);
+
+	return 0;
 }
 
 static const struct platform_device_id max77686_clk_id[] = {
-	{ "max77686-clk", 0},
-	{ },
+	{ "max77686-clk", .driver_data = (kernel_ulong_t)CHIP_MAX77686, },
+	{ "max77802-clk", .driver_data = (kernel_ulong_t)CHIP_MAX77802, },
+	{},
 };
 MODULE_DEVICE_TABLE(platform, max77686_clk_id);
 
diff --git a/drivers/clk/clk-max77802.c b/drivers/clk/clk-max77802.c
deleted file mode 100644
index 355dd2e..0000000
--- a/drivers/clk/clk-max77802.c
+++ /dev/null
@@ -1,96 +0,0 @@ 
-/*
- * clk-max77802.c - Clock driver for Maxim 77802
- *
- * Copyright (C) 2014 Google, Inc
- *
- * Copyright (C) 2012 Samsung Electornics
- * Jonghwa Lee <jonghwa3.lee@samsung.com>
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * This driver is based on clk-max77686.c
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/mfd/max77686-private.h>
-#include <linux/clk-provider.h>
-#include <linux/mutex.h>
-#include <linux/clkdev.h>
-
-#include <dt-bindings/clock/maxim,max77802.h>
-#include "clk-max-gen.h"
-
-#define MAX77802_CLOCK_OPMODE_MASK	0x1
-#define MAX77802_CLOCK_LOW_JITTER_SHIFT 0x3
-
-static struct clk_init_data max77802_clks_init[MAX77802_CLKS_NUM] = {
-	[MAX77802_CLK_32K_AP] = {
-		.name = "32khz_ap",
-		.ops = &max_gen_clk_ops,
-	},
-	[MAX77802_CLK_32K_CP] = {
-		.name = "32khz_cp",
-		.ops = &max_gen_clk_ops,
-	},
-};
-
-static int max77802_clk_probe(struct platform_device *pdev)
-{
-	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
-	int ret;
-
-	ret = max_gen_clk_probe(pdev, iodev->regmap, MAX77802_REG_32KHZ,
-				max77802_clks_init, MAX77802_CLKS_NUM);
-
-	if (ret) {
-		dev_err(&pdev->dev, "generic probe failed %d\n", ret);
-		return ret;
-	}
-
-	/* Enable low-jitter mode on the 32khz clocks. */
-	ret = regmap_update_bits(iodev->regmap, MAX77802_REG_32KHZ,
-				 1 << MAX77802_CLOCK_LOW_JITTER_SHIFT,
-				 1 << MAX77802_CLOCK_LOW_JITTER_SHIFT);
-	if (ret < 0)
-		dev_err(&pdev->dev, "failed to enable low-jitter mode\n");
-
-	return ret;
-}
-
-static int max77802_clk_remove(struct platform_device *pdev)
-{
-	return max_gen_clk_remove(pdev, MAX77802_CLKS_NUM);
-}
-
-static const struct platform_device_id max77802_clk_id[] = {
-	{ "max77802-clk", 0},
-	{ },
-};
-MODULE_DEVICE_TABLE(platform, max77802_clk_id);
-
-static struct platform_driver max77802_clk_driver = {
-	.driver = {
-		.name  = "max77802-clk",
-	},
-	.probe = max77802_clk_probe,
-	.remove = max77802_clk_remove,
-	.id_table = max77802_clk_id,
-};
-
-module_platform_driver(max77802_clk_driver);
-
-MODULE_DESCRIPTION("MAXIM 77802 Clock Driver");
-MODULE_AUTHOR("Javier Martinez Canillas <javier@osg.samsung.com");
-MODULE_LICENSE("GPL");