Re: [PATCH v3 2/2] mmc: core: Use device_property_read instead of of_property_read

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On 26 May 2017 at 23:53, David Woods <dwoods@xxxxxxxxxxxx> wrote:
> Using the device_property interfaces allows mmc drivers to work
> on platforms which run on either device tree or ACPI.
>
> Signed-off-by: David Woods <dwoods@xxxxxxxxxxxx>
> Reviewed-by: Chris Metcalf <cmetcalf@xxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxx

Thanks, applied for next!

Kind regards
Uffe

> ---
>  drivers/mmc/core/host.c | 72 ++++++++++++++++++++++++-------------------------
>  1 file changed, 35 insertions(+), 37 deletions(-)
>
> diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
> index 3f8c85d..88fa031 100644
> --- a/drivers/mmc/core/host.c
> +++ b/drivers/mmc/core/host.c
> @@ -176,19 +176,17 @@ static void mmc_retune_timer(unsigned long data)
>   */
>  int mmc_of_parse(struct mmc_host *host)
>  {
> -       struct device_node *np;
> +       struct device *dev = host->parent;
>         u32 bus_width;
>         int ret;
>         bool cd_cap_invert, cd_gpio_invert = false;
>         bool ro_cap_invert, ro_gpio_invert = false;
>
> -       if (!host->parent || !host->parent->of_node)
> +       if (!dev || !dev_fwnode(dev))
>                 return 0;
>
> -       np = host->parent->of_node;
> -
>         /* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */
> -       if (of_property_read_u32(np, "bus-width", &bus_width) < 0) {
> +       if (device_property_read_u32(dev, "bus-width", &bus_width) < 0) {
>                 dev_dbg(host->parent,
>                         "\"bus-width\" property is missing, assuming 1 bit.\n");
>                 bus_width = 1;
> @@ -210,7 +208,7 @@ int mmc_of_parse(struct mmc_host *host)
>         }
>
>         /* f_max is obtained from the optional "max-frequency" property */
> -       of_property_read_u32(np, "max-frequency", &host->f_max);
> +       device_property_read_u32(dev, "max-frequency", &host->f_max);
>
>         /*
>          * Configure CD and WP pins. They are both by default active low to
> @@ -225,12 +223,12 @@ int mmc_of_parse(struct mmc_host *host)
>          */
>
>         /* Parse Card Detection */
> -       if (of_property_read_bool(np, "non-removable")) {
> +       if (device_property_read_bool(dev, "non-removable")) {
>                 host->caps |= MMC_CAP_NONREMOVABLE;
>         } else {
> -               cd_cap_invert = of_property_read_bool(np, "cd-inverted");
> +               cd_cap_invert = device_property_read_bool(dev, "cd-inverted");
>
> -               if (of_property_read_bool(np, "broken-cd"))
> +               if (device_property_read_bool(dev, "broken-cd"))
>                         host->caps |= MMC_CAP_NEEDS_POLL;
>
>                 ret = mmc_gpiod_request_cd(host, "cd", 0, true,
> @@ -256,7 +254,7 @@ int mmc_of_parse(struct mmc_host *host)
>         }
>
>         /* Parse Write Protection */
> -       ro_cap_invert = of_property_read_bool(np, "wp-inverted");
> +       ro_cap_invert = device_property_read_bool(dev, "wp-inverted");
>
>         ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert);
>         if (!ret)
> @@ -264,64 +262,64 @@ int mmc_of_parse(struct mmc_host *host)
>         else if (ret != -ENOENT && ret != -ENOSYS)
>                 return ret;
>
> -       if (of_property_read_bool(np, "disable-wp"))
> +       if (device_property_read_bool(dev, "disable-wp"))
>                 host->caps2 |= MMC_CAP2_NO_WRITE_PROTECT;
>
>         /* See the comment on CD inversion above */
>         if (ro_cap_invert ^ ro_gpio_invert)
>                 host->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
>
> -       if (of_property_read_bool(np, "cap-sd-highspeed"))
> +       if (device_property_read_bool(dev, "cap-sd-highspeed"))
>                 host->caps |= MMC_CAP_SD_HIGHSPEED;
> -       if (of_property_read_bool(np, "cap-mmc-highspeed"))
> +       if (device_property_read_bool(dev, "cap-mmc-highspeed"))
>                 host->caps |= MMC_CAP_MMC_HIGHSPEED;
> -       if (of_property_read_bool(np, "sd-uhs-sdr12"))
> +       if (device_property_read_bool(dev, "sd-uhs-sdr12"))
>                 host->caps |= MMC_CAP_UHS_SDR12;
> -       if (of_property_read_bool(np, "sd-uhs-sdr25"))
> +       if (device_property_read_bool(dev, "sd-uhs-sdr25"))
>                 host->caps |= MMC_CAP_UHS_SDR25;
> -       if (of_property_read_bool(np, "sd-uhs-sdr50"))
> +       if (device_property_read_bool(dev, "sd-uhs-sdr50"))
>                 host->caps |= MMC_CAP_UHS_SDR50;
> -       if (of_property_read_bool(np, "sd-uhs-sdr104"))
> +       if (device_property_read_bool(dev, "sd-uhs-sdr104"))
>                 host->caps |= MMC_CAP_UHS_SDR104;
> -       if (of_property_read_bool(np, "sd-uhs-ddr50"))
> +       if (device_property_read_bool(dev, "sd-uhs-ddr50"))
>                 host->caps |= MMC_CAP_UHS_DDR50;
> -       if (of_property_read_bool(np, "cap-power-off-card"))
> +       if (device_property_read_bool(dev, "cap-power-off-card"))
>                 host->caps |= MMC_CAP_POWER_OFF_CARD;
> -       if (of_property_read_bool(np, "cap-mmc-hw-reset"))
> +       if (device_property_read_bool(dev, "cap-mmc-hw-reset"))
>                 host->caps |= MMC_CAP_HW_RESET;
> -       if (of_property_read_bool(np, "cap-sdio-irq"))
> +       if (device_property_read_bool(dev, "cap-sdio-irq"))
>                 host->caps |= MMC_CAP_SDIO_IRQ;
> -       if (of_property_read_bool(np, "full-pwr-cycle"))
> +       if (device_property_read_bool(dev, "full-pwr-cycle"))
>                 host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE;
> -       if (of_property_read_bool(np, "keep-power-in-suspend"))
> +       if (device_property_read_bool(dev, "keep-power-in-suspend"))
>                 host->pm_caps |= MMC_PM_KEEP_POWER;
> -       if (of_property_read_bool(np, "wakeup-source") ||
> -           of_property_read_bool(np, "enable-sdio-wakeup")) /* legacy */
> +       if (device_property_read_bool(dev, "wakeup-source") ||
> +           device_property_read_bool(dev, "enable-sdio-wakeup")) /* legacy */
>                 host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
> -       if (of_property_read_bool(np, "mmc-ddr-3_3v"))
> +       if (device_property_read_bool(dev, "mmc-ddr-3_3v"))
>                 host->caps |= MMC_CAP_3_3V_DDR;
> -       if (of_property_read_bool(np, "mmc-ddr-1_8v"))
> +       if (device_property_read_bool(dev, "mmc-ddr-1_8v"))
>                 host->caps |= MMC_CAP_1_8V_DDR;
> -       if (of_property_read_bool(np, "mmc-ddr-1_2v"))
> +       if (device_property_read_bool(dev, "mmc-ddr-1_2v"))
>                 host->caps |= MMC_CAP_1_2V_DDR;
> -       if (of_property_read_bool(np, "mmc-hs200-1_8v"))
> +       if (device_property_read_bool(dev, "mmc-hs200-1_8v"))
>                 host->caps2 |= MMC_CAP2_HS200_1_8V_SDR;
> -       if (of_property_read_bool(np, "mmc-hs200-1_2v"))
> +       if (device_property_read_bool(dev, "mmc-hs200-1_2v"))
>                 host->caps2 |= MMC_CAP2_HS200_1_2V_SDR;
> -       if (of_property_read_bool(np, "mmc-hs400-1_8v"))
> +       if (device_property_read_bool(dev, "mmc-hs400-1_8v"))
>                 host->caps2 |= MMC_CAP2_HS400_1_8V | MMC_CAP2_HS200_1_8V_SDR;
> -       if (of_property_read_bool(np, "mmc-hs400-1_2v"))
> +       if (device_property_read_bool(dev, "mmc-hs400-1_2v"))
>                 host->caps2 |= MMC_CAP2_HS400_1_2V | MMC_CAP2_HS200_1_2V_SDR;
> -       if (of_property_read_bool(np, "mmc-hs400-enhanced-strobe"))
> +       if (device_property_read_bool(dev, "mmc-hs400-enhanced-strobe"))
>                 host->caps2 |= MMC_CAP2_HS400_ES;
> -       if (of_property_read_bool(np, "no-sdio"))
> +       if (device_property_read_bool(dev, "no-sdio"))
>                 host->caps2 |= MMC_CAP2_NO_SDIO;
> -       if (of_property_read_bool(np, "no-sd"))
> +       if (device_property_read_bool(dev, "no-sd"))
>                 host->caps2 |= MMC_CAP2_NO_SD;
> -       if (of_property_read_bool(np, "no-mmc"))
> +       if (device_property_read_bool(dev, "no-mmc"))
>                 host->caps2 |= MMC_CAP2_NO_MMC;
>
> -       host->dsr_req = !of_property_read_u32(np, "dsr", &host->dsr);
> +       host->dsr_req = !device_property_read_u32(dev, "dsr", &host->dsr);
>         if (host->dsr_req && (host->dsr & ~0xffff)) {
>                 dev_err(host->parent,
>                         "device tree specified broken value for DSR: 0x%x, ignoring\n",
> --
> 2.7.2
>
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