Re: [PATCH v3 resend] clk: s2mps11: Add support for S2MPS14 clocks

[Krzysztof Kozlowski]

Hi,

Mike, can you apply this patch? Actually you acked it already [1] but I
forgot to put it in the commit message.

The patch wasn't applied in that time because of multiple concurrent
changes in sec-core drivers.

[1]http://thread.gmane.org/gmane.linux.kernel.samsung-soc/28039/focus=310279

Best regards,
Krzysztof



On pon, 2014-04-14 at 09:55 +0200, Krzysztof Kozlowski wrote:
> This patch adds support for S2MPS14 PMIC clocks (BT and AP) to the
> s2mps11 clock driver.
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
> Cc: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
> Reviewed-by: Yadwinder Singh Brar <yadi.brar@xxxxxxxxxxx>
> Reviewed-by: Tomasz Figa <t.figa@xxxxxxxxxxx>
> ---
>  drivers/clk/Kconfig       |  8 +++----
>  drivers/clk/clk-s2mps11.c | 61 +++++++++++++++++++++++++++++++++++------------
>  2 files changed, 50 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index 6f56d3a4f010..8f9ce8ba036d 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -65,12 +65,12 @@ config COMMON_CLK_SI570
>  	  clock generators.
>  
>  config COMMON_CLK_S2MPS11
> -	tristate "Clock driver for S2MPS11/S5M8767 MFD"
> +	tristate "Clock driver for S2MPS1X/S5M8767 MFD"
>  	depends on MFD_SEC_CORE
>  	---help---
> -	  This driver supports S2MPS11/S5M8767 crystal oscillator clock. These
> -	  multi-function devices have 3 fixed-rate oscillators, clocked at
> -	  32KHz each.
> +	  This driver supports S2MPS11/S2MPS14/S5M8767 crystal oscillator
> +	  clock. These multi-function devices have two (S2MPS14) or three
> +	  (S2MPS11, S5M8767) fixed-rate oscillators, clocked at 32KHz each.
>  
>  config CLK_TWL6040
>  	tristate "External McPDM functional clock from twl6040"
> diff --git a/drivers/clk/clk-s2mps11.c b/drivers/clk/clk-s2mps11.c
> index f2f62a1bf61a..b78eafeab038 100644
> --- a/drivers/clk/clk-s2mps11.c
> +++ b/drivers/clk/clk-s2mps11.c
> @@ -1,7 +1,7 @@
>  /*
>   * clk-s2mps11.c - Clock driver for S2MPS11.
>   *
> - * Copyright (C) 2013 Samsung Electornics
> + * Copyright (C) 2013,2014 Samsung Electornics
>   *
>   * 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
> @@ -13,10 +13,6 @@
>   * 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/module.h>
> @@ -27,6 +23,7 @@
>  #include <linux/clk-provider.h>
>  #include <linux/platform_device.h>
>  #include <linux/mfd/samsung/s2mps11.h>
> +#include <linux/mfd/samsung/s2mps14.h>
>  #include <linux/mfd/samsung/s5m8767.h>
>  #include <linux/mfd/samsung/core.h>
>  
> @@ -125,7 +122,21 @@ static struct clk_init_data s2mps11_clks_init[S2MPS11_CLKS_NUM] = {
>  	},
>  };
>  
> -static struct device_node *s2mps11_clk_parse_dt(struct platform_device *pdev)
> +static struct clk_init_data s2mps14_clks_init[S2MPS11_CLKS_NUM] = {
> +	[S2MPS11_CLK_AP] = {
> +		.name = "s2mps14_ap",
> +		.ops = &s2mps11_clk_ops,
> +		.flags = CLK_IS_ROOT,
> +	},
> +	[S2MPS11_CLK_BT] = {
> +		.name = "s2mps14_bt",
> +		.ops = &s2mps11_clk_ops,
> +		.flags = CLK_IS_ROOT,
> +	},
> +};
> +
> +static struct device_node *s2mps11_clk_parse_dt(struct platform_device *pdev,
> +		struct clk_init_data *clks_init)
>  {
>  	struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
>  	struct device_node *clk_np;
> @@ -145,9 +156,12 @@ static struct device_node *s2mps11_clk_parse_dt(struct platform_device *pdev)
>  	if (!clk_table)
>  		return ERR_PTR(-ENOMEM);
>  
> -	for (i = 0; i < S2MPS11_CLKS_NUM; i++)
> +	for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
> +		if (!clks_init[i].name)
> +			continue; /* Skip clocks not present in some devices */
>  		of_property_read_string_index(clk_np, "clock-output-names", i,
> -				&s2mps11_clks_init[i].name);
> +				&clks_init[i].name);
> +	}
>  
>  	return clk_np;
>  }
> @@ -158,6 +172,7 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
>  	struct s2mps11_clk *s2mps11_clks, *s2mps11_clk;
>  	struct device_node *clk_np = NULL;
>  	unsigned int s2mps11_reg;
> +	struct clk_init_data *clks_init;
>  	int i, ret = 0;
>  	u32 val;
>  
> @@ -168,25 +183,33 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
>  
>  	s2mps11_clk = s2mps11_clks;
>  
> -	clk_np = s2mps11_clk_parse_dt(pdev);
> -	if (IS_ERR(clk_np))
> -		return PTR_ERR(clk_np);
> -
>  	switch(platform_get_device_id(pdev)->driver_data) {
>  	case S2MPS11X:
>  		s2mps11_reg = S2MPS11_REG_RTC_CTRL;
> +		clks_init = s2mps11_clks_init;
> +		break;
> +	case S2MPS14X:
> +		s2mps11_reg = S2MPS14_REG_RTCCTRL;
> +		clks_init = s2mps14_clks_init;
>  		break;
>  	case S5M8767X:
>  		s2mps11_reg = S5M8767_REG_CTRL1;
> +		clks_init = s2mps11_clks_init;
>  		break;
>  	default:
>  		dev_err(&pdev->dev, "Invalid device type\n");
>  		return -EINVAL;
>  	};
>  
> +	clk_np = s2mps11_clk_parse_dt(pdev, clks_init);
> +	if (IS_ERR(clk_np))
> +		return PTR_ERR(clk_np);
> +
>  	for (i = 0; i < S2MPS11_CLKS_NUM; i++, s2mps11_clk++) {
> +		if (!clks_init[i].name)
> +			continue; /* Skip clocks not present in some devices */
>  		s2mps11_clk->iodev = iodev;
> -		s2mps11_clk->hw.init = &s2mps11_clks_init[i];
> +		s2mps11_clk->hw.init = &clks_init[i];
>  		s2mps11_clk->mask = 1 << i;
>  		s2mps11_clk->reg = s2mps11_reg;
>  
> @@ -220,8 +243,12 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
>  	}
>  
>  	if (clk_table) {
> -		for (i = 0; i < S2MPS11_CLKS_NUM; i++)
> +		for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
> +			/* Skip clocks not present on S2MPS14 */
> +			if (!clks_init[i].name)
> +				continue;
>  			clk_table[i] = s2mps11_clks[i].clk;
> +		}
>  
>  		clk_data.clks = clk_table;
>  		clk_data.clk_num = S2MPS11_CLKS_NUM;
> @@ -250,14 +277,18 @@ static int s2mps11_clk_remove(struct platform_device *pdev)
>  	struct s2mps11_clk *s2mps11_clks = platform_get_drvdata(pdev);
>  	int i;
>  
> -	for (i = 0; i < S2MPS11_CLKS_NUM; i++)
> +	for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
> +		if (!s2mps11_clks[i].lookup)
> +			continue; /* Skip clocks not present in some devices */
>  		clkdev_drop(s2mps11_clks[i].lookup);
> +	}
>  
>  	return 0;
>  }
>  
>  static const struct platform_device_id s2mps11_clk_id[] = {
>  	{ "s2mps11-clk", S2MPS11X},
> +	{ "s2mps14-clk", S2MPS14X},
>  	{ "s5m8767-clk", S5M8767X},
>  	{ },
>  };

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