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    Subject[PATCH 5/6 v2] gpio-pch: Save register value in suspend()
    Date
    Currently, when suspend is occurred, register im0/1 and gpio_use_sel are not
    saved.
    This patch modifies so that register im0/1 and gpio_use_sel are saved.

    Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
    ---
    drivers/gpio/gpio-pch.c | 22 +++++++++++++++++++++-
    1 files changed, 21 insertions(+), 1 deletions(-)

    diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c
    index 4ac69bd..7f773af 100644
    --- a/drivers/gpio/gpio-pch.c
    +++ b/drivers/gpio/gpio-pch.c
    @@ -30,7 +30,8 @@ struct pch_regs {
    u32 pm;
    u32 im0;
    u32 im1;
    - u32 reserved[4];
    + u32 reserved[3];
    + u32 gpio_use_sel;
    u32 reset;
    };

    @@ -51,10 +52,17 @@ static int gpio_pins[] = {
    * struct pch_gpio_reg_data - The register store data.
    * @po_reg: To store contents of PO register.
    * @pm_reg: To store contents of PM register.
    + * @im0_reg: To store contents of IM0 register.
    + * @im1_reg: To store contents of IM1 register.
    + * @gpio_use_sel_reg : To store contents of GPIO_USE_SEL register.
    + * (Only ML7223 Bus-n)
    */
    struct pch_gpio_reg_data {
    u32 po_reg;
    u32 pm_reg;
    + u32 im0_reg;
    + u32 im1_reg;
    + u32 gpio_use_sel_reg;
    };

    /**
    @@ -149,6 +157,12 @@ static void pch_gpio_save_reg_conf(struct pch_gpio *chip)
    {
    chip->pch_gpio_reg.po_reg = ioread32(&chip->reg->po);
    chip->pch_gpio_reg.pm_reg = ioread32(&chip->reg->pm);
    + chip->pch_gpio_reg.im0_reg = ioread32(&chip->reg->im0);
    + if (chip->ioh == INTEL_EG20T_PCH)
    + chip->pch_gpio_reg.im1_reg = ioread32(&chip->reg->im1);
    + if (chip->ioh == OKISEMI_ML7223n_IOH)
    + chip->pch_gpio_reg.gpio_use_sel_reg =\
    + ioread32(&chip->reg->gpio_use_sel);
    }

    /*
    @@ -160,6 +174,12 @@ static void pch_gpio_restore_reg_conf(struct pch_gpio *chip)
    iowrite32(chip->pch_gpio_reg.po_reg, &chip->reg->po);
    /* to store contents of PM register */
    iowrite32(chip->pch_gpio_reg.pm_reg, &chip->reg->pm);
    + iowrite32(chip->pch_gpio_reg.im0_reg, &chip->reg->im0);
    + if (chip->ioh == INTEL_EG20T_PCH)
    + iowrite32(chip->pch_gpio_reg.im1_reg, &chip->reg->im1);
    + if (chip->ioh == OKISEMI_ML7223n_IOH)
    + iowrite32(chip->pch_gpio_reg.gpio_use_sel_reg,
    + &chip->reg->gpio_use_sel);
    }

    static void pch_gpio_setup(struct pch_gpio *chip)
    --
    1.7.4.4


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