Re: [PATCH 2/4] ARM: SAMSUNG: move the header file to driver directory

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On 24 February 2012 16:00, Jaehoon Chung <jh80.chung@xxxxxxxxxxx> wrote:
> On 02/24/2012 06:10 PM, Thomas Abraham wrote:
>
>> Dear Mr. Chung,
>>
>> On 14 February 2012 10:33, Jaehoon Chung <jh80.chung@xxxxxxxxxxx> wrote:
>>> The header-file is moved to drivers/mmc/host from plat.
>>>
>>> Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
>>> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
>>> ---
>>>  arch/arm/mach-exynos/setup-sdhci-gpio.c         |    1 -
>>>  arch/arm/mach-s5pc100/setup-sdhci-gpio.c        |    1 -
>>>  arch/arm/mach-s5pv210/setup-sdhci-gpio.c        |    1 -
>>>  arch/arm/plat-samsung/include/plat/regs-sdhci.h |   87 ----------------------
>>>  drivers/mmc/host/sdhci-s3c.h                    |   89 +++++++++++++++++++++++
>>>  5 files changed, 89 insertions(+), 90 deletions(-)
>>>  delete mode 100644 arch/arm/plat-samsung/include/plat/regs-sdhci.h
>>>  create mode 100644 drivers/mmc/host/sdhci-s3c.h
>>>
>>> diff --git a/arch/arm/mach-exynos/setup-sdhci-gpio.c b/arch/arm/mach-exynos/setup-sdhci-gpio.c
>>> index e8d08bf..cda3714 100644
>>> --- a/arch/arm/mach-exynos/setup-sdhci-gpio.c
>>> +++ b/arch/arm/mach-exynos/setup-sdhci-gpio.c
>>> @@ -20,7 +20,6 @@
>>>  #include <linux/mmc/card.h>
>>>
>>>  #include <plat/gpio-cfg.h>
>>> -#include <plat/regs-sdhci.h>
>>>  #include <plat/sdhci.h>
>>>
>>>  void exynos4_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
>>> diff --git a/arch/arm/mach-s5pc100/setup-sdhci-gpio.c b/arch/arm/mach-s5pc100/setup-sdhci-gpio.c
>>> index 03c02d0..6010c03 100644
>>> --- a/arch/arm/mach-s5pc100/setup-sdhci-gpio.c
>>> +++ b/arch/arm/mach-s5pc100/setup-sdhci-gpio.c
>>> @@ -19,7 +19,6 @@
>>>  #include <linux/mmc/card.h>
>>>
>>>  #include <plat/gpio-cfg.h>
>>> -#include <plat/regs-sdhci.h>
>>>  #include <plat/sdhci.h>
>>>
>>>  void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
>>> diff --git a/arch/arm/mach-s5pv210/setup-sdhci-gpio.c b/arch/arm/mach-s5pv210/setup-sdhci-gpio.c
>>> index 3e3ac05..0512ada 100644
>>> --- a/arch/arm/mach-s5pv210/setup-sdhci-gpio.c
>>> +++ b/arch/arm/mach-s5pv210/setup-sdhci-gpio.c
>>> @@ -20,7 +20,6 @@
>>>  #include <linux/mmc/card.h>
>>>
>>>  #include <plat/gpio-cfg.h>
>>> -#include <plat/regs-sdhci.h>
>>>  #include <plat/sdhci.h>
>>>
>>>  void s5pv210_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
>>> diff --git a/arch/arm/plat-samsung/include/plat/regs-sdhci.h b/arch/arm/plat-samsung/include/plat/regs-sdhci.h
>>> deleted file mode 100644
>>> index e34049a..0000000
>>> --- a/arch/arm/plat-samsung/include/plat/regs-sdhci.h
>>> +++ /dev/null
>>> @@ -1,87 +0,0 @@
>>> -/* linux/arch/arm/plat-s3c/include/plat/regs-sdhci.h
>>> - *
>>> - * Copyright 2008 Openmoko, Inc.
>>> - * Copyright 2008 Simtec Electronics
>>> - *     http://armlinux.simtec.co.uk/
>>> - *     Ben Dooks <ben@xxxxxxxxxxxx>
>>> - *
>>> - * S3C Platform - SDHCI (HSMMC) register definitions
>>> - *
>>> - * This program is free software; you can redistribute it and/or modify
>>> - * it under the terms of the GNU General Public License version 2 as
>>> - * published by the Free Software Foundation.
>>> -*/
>>> -
>>> -#ifndef __PLAT_S3C_SDHCI_REGS_H
>>> -#define __PLAT_S3C_SDHCI_REGS_H __FILE__
>>> -
>>> -#define S3C_SDHCI_CONTROL2                     (0x80)
>>> -#define S3C_SDHCI_CONTROL3                     (0x84)
>>> -#define S3C64XX_SDHCI_CONTROL4                 (0x8C)
>>> -
>>> -#define S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR      (1 << 31)
>>> -#define S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK                (1 << 30)
>>> -#define S3C_SDHCI_CTRL2_CDINVRXD3              (1 << 29)
>>> -#define S3C_SDHCI_CTRL2_SLCARDOUT              (1 << 28)
>>> -
>>> -#define S3C_SDHCI_CTRL2_FLTCLKSEL_MASK         (0xf << 24)
>>> -#define S3C_SDHCI_CTRL2_FLTCLKSEL_SHIFT                (24)
>>> -#define S3C_SDHCI_CTRL2_FLTCLKSEL(_x)          ((_x) << 24)
>>> -
>>> -#define S3C_SDHCI_CTRL2_LVLDAT_MASK            (0xff << 16)
>>> -#define S3C_SDHCI_CTRL2_LVLDAT_SHIFT           (16)
>>> -#define S3C_SDHCI_CTRL2_LVLDAT(_x)             ((_x) << 16)
>>> -
>>> -#define S3C_SDHCI_CTRL2_ENFBCLKTX              (1 << 15)
>>> -#define S3C_SDHCI_CTRL2_ENFBCLKRX              (1 << 14)
>>> -#define S3C_SDHCI_CTRL2_SDCDSEL                        (1 << 13)
>>> -#define S3C_SDHCI_CTRL2_SDSIGPC                        (1 << 12)
>>> -#define S3C_SDHCI_CTRL2_ENBUSYCHKTXSTART       (1 << 11)
>>> -
>>> -#define S3C_SDHCI_CTRL2_DFCNT_MASK             (0x3 << 9)
>>> -#define S3C_SDHCI_CTRL2_DFCNT_SHIFT            (9)
>>> -#define S3C_SDHCI_CTRL2_DFCNT_NONE             (0x0 << 9)
>>> -#define S3C_SDHCI_CTRL2_DFCNT_4SDCLK           (0x1 << 9)
>>> -#define S3C_SDHCI_CTRL2_DFCNT_16SDCLK          (0x2 << 9)
>>> -#define S3C_SDHCI_CTRL2_DFCNT_64SDCLK          (0x3 << 9)
>>> -
>>> -#define S3C_SDHCI_CTRL2_ENCLKOUTHOLD           (1 << 8)
>>> -#define S3C_SDHCI_CTRL2_RWAITMODE              (1 << 7)
>>> -#define S3C_SDHCI_CTRL2_DISBUFRD               (1 << 6)
>>> -#define S3C_SDHCI_CTRL2_SELBASECLK_MASK                (0x3 << 4)
>>> -#define S3C_SDHCI_CTRL2_SELBASECLK_SHIFT       (4)
>>> -#define S3C_SDHCI_CTRL2_PWRSYNC                        (1 << 3)
>>> -#define S3C_SDHCI_CTRL2_ENCLKOUTMSKCON         (1 << 1)
>>> -#define S3C_SDHCI_CTRL2_HWINITFIN              (1 << 0)
>>> -
>>> -#define S3C_SDHCI_CTRL3_FCSEL3                 (1 << 31)
>>> -#define S3C_SDHCI_CTRL3_FCSEL2                 (1 << 23)
>>> -#define S3C_SDHCI_CTRL3_FCSEL1                 (1 << 15)
>>> -#define S3C_SDHCI_CTRL3_FCSEL0                 (1 << 7)
>>> -
>>> -#define S3C_SDHCI_CTRL3_FIA3_MASK              (0x7f << 24)
>>> -#define S3C_SDHCI_CTRL3_FIA3_SHIFT             (24)
>>> -#define S3C_SDHCI_CTRL3_FIA3(_x)               ((_x) << 24)
>>> -
>>> -#define S3C_SDHCI_CTRL3_FIA2_MASK              (0x7f << 16)
>>> -#define S3C_SDHCI_CTRL3_FIA2_SHIFT             (16)
>>> -#define S3C_SDHCI_CTRL3_FIA2(_x)               ((_x) << 16)
>>> -
>>> -#define S3C_SDHCI_CTRL3_FIA1_MASK              (0x7f << 8)
>>> -#define S3C_SDHCI_CTRL3_FIA1_SHIFT             (8)
>>> -#define S3C_SDHCI_CTRL3_FIA1(_x)               ((_x) << 8)
>>> -
>>> -#define S3C_SDHCI_CTRL3_FIA0_MASK              (0x7f << 0)
>>> -#define S3C_SDHCI_CTRL3_FIA0_SHIFT             (0)
>>> -#define S3C_SDHCI_CTRL3_FIA0(_x)               ((_x) << 0)
>>> -
>>> -#define S3C64XX_SDHCI_CONTROL4_DRIVE_MASK      (0x3 << 16)
>>> -#define S3C64XX_SDHCI_CONTROL4_DRIVE_SHIFT     (16)
>>> -#define S3C64XX_SDHCI_CONTROL4_DRIVE_2mA       (0x0 << 16)
>>> -#define S3C64XX_SDHCI_CONTROL4_DRIVE_4mA       (0x1 << 16)
>>> -#define S3C64XX_SDHCI_CONTROL4_DRIVE_7mA       (0x2 << 16)
>>> -#define S3C64XX_SDHCI_CONTROL4_DRIVE_9mA       (0x3 << 16)
>>> -
>>> -#define S3C64XX_SDHCI_CONTROL4_BUSY            (1)
>>> -
>>> -#endif /* __PLAT_S3C_SDHCI_REGS_H */
>>> diff --git a/drivers/mmc/host/sdhci-s3c.h b/drivers/mmc/host/sdhci-s3c.h
>>> new file mode 100644
>>> index 0000000..e233b15
>>> --- /dev/null
>>> +++ b/drivers/mmc/host/sdhci-s3c.h
>>> @@ -0,0 +1,89 @@
>>> +/*
>>> + * SDHCI Samsung controller driver generics for OF and pltfm.
>>> + *
>>> + * Copyright 2008 Openmoko, Inc.
>>> + * Copyright 2008 Simtec Electronics
>>> + *     http://armlinux.simtec.co.uk/
>>> + *     Ben Dooks <ben@xxxxxxxxxxxx>
>>> + *
>>> + * S3C Platform - SDHCI (HSMMC) register definitions
>>> + *
>>> + * 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.
>>> + */
>>> +
>>> +#ifndef __DRIVERS_MMC_S3C_SDHCI_H
>>> +#define __DRIVERS_MMC_S3C_SDHCI_H
>>> +
>>> +#define S3C_SDHCI_CONTROL2                     (0x80)
>>> +#define S3C_SDHCI_CONTROL3                     (0x84)
>>> +#define S3C_SDHCI_CONTROL4                     (0x8C)
>>> +
>>> +#define S3C_SDHCI_CTRL2_ENSTAASYNCCLR          (1 << 31)
>>> +#define S3C_SDHCI_CTRL2_ENCMDCNFMSK            (1 << 30)
>>> +#define S3C_SDHCI_CTRL2_CDINVRXD3              (1 << 29)
>>> +#define S3C_SDHCI_CTRL2_SLCARDOUT              (1 << 28)
>>> +
>>> +#define S3C_SDHCI_CTRL2_FLTCLKSEL_MASK         (0xf << 24)
>>> +#define S3C_SDHCI_CTRL2_FLTCLKSEL_SHIFT                (24)
>>> +#define S3C_SDHCI_CTRL2_FLTCLKSEL(_x)          ((_x) << 24)
>>> +
>>> +#define S3C_SDHCI_CTRL2_LVLDAT_MASK            (0xff << 16)
>>> +#define S3C_SDHCI_CTRL2_LVLDAT_SHIFT           (16)
>>> +#define S3C_SDHCI_CTRL2_LVLDAT(_x)             ((_x) << 16)
>>> +
>>> +#define S3C_SDHCI_CTRL2_ENFBCLKTX              (1 << 15)
>>> +#define S3C_SDHCI_CTRL2_ENFBCLKRX              (1 << 14)
>>> +#define S3C_SDHCI_CTRL2_SDCDSEL                        (1 << 13)
>>> +#define S3C_SDHCI_CTRL2_SDSIGPC                        (1 << 12)
>>> +#define S3C_SDHCI_CTRL2_ENBUSYCHKTXSTART       (1 << 11)
>>> +
>>> +#define S3C_SDHCI_CTRL2_DFCNT_MASK             (0x3 << 9)
>>> +#define S3C_SDHCI_CTRL2_DFCNT_SHIFT            (9)
>>> +#define S3C_SDHCI_CTRL2_DFCNT_NONE             (0x0 << 9)
>>> +#define S3C_SDHCI_CTRL2_DFCNT_4SDCLK           (0x1 << 9)
>>> +#define S3C_SDHCI_CTRL2_DFCNT_16SDCLK          (0x2 << 9)
>>> +#define S3C_SDHCI_CTRL2_DFCNT_64SDCLK          (0x3 << 9)
>>> +
>>> +#define S3C_SDHCI_CTRL2_ENCLKOUTHOLD           (1 << 8)
>>> +#define S3C_SDHCI_CTRL2_RWAITMODE              (1 << 7)
>>> +#define S3C_SDHCI_CTRL2_DISBUFRD               (1 << 6)
>>> +#define S3C_SDHCI_CTRL2_SELBASECLK_MASK                (0x3 << 4)
>>> +#define S3C_SDHCI_CTRL2_SELBASECLK_SHIFT       (4)
>>> +#define S3C_SDHCI_CTRL2_PWRSYNC                        (1 << 3)
>>> +#define S3C_SDHCI_CTRL2_ENCLKOUTMSKCON         (1 << 1)
>>> +#define S3C_SDHCI_CTRL2_HWINITFIN              (1 << 0)
>>> +
>>> +#define S3C_SDHCI_CTRL3_FCSEL3                 (1 << 31)
>>> +#define S3C_SDHCI_CTRL3_FCSEL2                 (1 << 23)
>>> +#define S3C_SDHCI_CTRL3_FCSEL1                 (1 << 15)
>>> +#define S3C_SDHCI_CTRL3_FCSEL0                 (1 << 7)
>>> +
>>> +#define S3C_SDHCI_CTRL3_FIA3_MASK              (0x7f << 24)
>>> +#define S3C_SDHCI_CTRL3_FIA3_SHIFT             (24)
>>> +#define S3C_SDHCI_CTRL3_FIA3(_x)               ((_x) << 24)
>>> +
>>> +#define S3C_SDHCI_CTRL3_FIA2_MASK              (0x7f << 16)
>>> +#define S3C_SDHCI_CTRL3_FIA2_SHIFT             (16)
>>> +#define S3C_SDHCI_CTRL3_FIA2(_x)               ((_x) << 16)
>>> +
>>> +#define S3C_SDHCI_CTRL3_FIA1_MASK              (0x7f << 8)
>>> +#define S3C_SDHCI_CTRL3_FIA1_SHIFT             (8)
>>> +#define S3C_SDHCI_CTRL3_FIA1(_x)               ((_x) << 8)
>>> +
>>> +#define S3C_SDHCI_CTRL3_FIA0_MASK              (0x7f << 0)
>>> +#define S3C_SDHCI_CTRL3_FIA0_SHIFT             (0)
>>> +#define S3C_SDHCI_CTRL3_FIA0(_x)               ((_x) << 0)
>>> +
>>> +#define S3C_SDHCI_CONTROL4_DRIVE_MASK          (0x3 << 16)
>>> +#define S3C_SDHCI_CONTROL4_DRIVE_SHIFT         (16)
>>> +#define S3C_SDHCI_CONTROL4_DRIVE_2mA           (0x0 << 16)
>>> +#define S3C_SDHCI_CONTROL4_DRIVE_4mA           (0x1 << 16)
>>> +#define S3C_SDHCI_CONTROL4_DRIVE_7mA           (0x2 << 16)
>>> +#define S3C_SDHCI_CONTROL4_DRIVE_9mA           (0x3 << 16)
>>
>> The CONTROL4 register is available from s3c6410 onwards. The sdhci
>> controller in s3c24xx (such as s3c2416) do not have the CONTROL4
>> register. I understand that renaming S3C64XX... to S3C should be fine
>> but the information that it is applicable from S3C64XX onwards only is
>> lost. Is this rename mandatory? I do not have any preference here, but
>> I guess we could just leave it as S3C64XX.
>
> Right..But CONTROL4 register didn't present only in s3c24xx.
> (just reserved).
> I think that can control in device driver whether s3c24xx or not.
> And also in CONTROL2 register, SELBASECLK bit didn't be used up to exynos4.
> But everything used S3C_SDHCI_XXX. so i have changed them.
> I didn't prefer anything, too.

Ok. In this case, we can do as Heiko suggested - Add comments in the
header file that CONTROL4 is used in s3c64xx onwards.

Thanks,
Thomas.

> Are there any reason that leave that information?
>
> Best Regards,
> Jaehoon Chung
>
>>
>> Thanks,
>> Thomas.
>>
>>> +
>>> +#define S3C_SDHCI_CONTROL4_BUSY                        (1)
>>> +
>>> +#endif /* __DRIVERS_MMC_S3C_SDHCI_H */
>>> +
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