On 8 April 2015 at 15:17, Fabio Estevam <festevam@xxxxxxxxx> wrote:
> From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
>
> Currently it is not possible to use 'mmc-pwrseq-simple' property with this
> driver because mmc_of_parse() is never called.
>
> mmc_of_parse() calls mmc_pwrseq_alloc() that manages MMC power sequence and
> allows passing GPIOs in the devicetree to properly power/reset the Wifi
> chipset.
>
> When using mmc_of_parse() we no longer need to have custom code to request
> card-detect and write-protect pins, as this can now be handled by the mmc
> core.
>
> Tested on a imx6sl-warp board where BT/Wifi is functional and also on a
> imx6q-sabresd.
>
> Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
Thanks! Applied.
Kind regards
Uffe
> ---
> Change since v2:
> - Use mmc_of_parse() and remove custom code to retrieve CD/WP GPIOs.
>
> drivers/mmc/host/sdhci-esdhc-imx.c | 38 ++++++--------------------------------
> 1 file changed, 6 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
> index 7ee8312..82f512d 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -1013,40 +1013,9 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
> host->mmc->parent->platform_data);
> }
>
> - /* write_protect */
> - if (boarddata->wp_type == ESDHC_WP_GPIO) {
> - err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio);
> - if (err) {
> - dev_err(mmc_dev(host->mmc),
> - "failed to request write-protect gpio!\n");
> - goto disable_clk;
> - }
> - host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
> - }
> -
> /* card_detect */
> - switch (boarddata->cd_type) {
> - case ESDHC_CD_GPIO:
> - err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio, 0);
> - if (err) {
> - dev_err(mmc_dev(host->mmc),
> - "failed to request card-detect gpio!\n");
> - goto disable_clk;
> - }
> - /* fall through */
> -
> - case ESDHC_CD_CONTROLLER:
> - /* we have a working card_detect back */
> + if (boarddata->cd_type == ESDHC_CD_CONTROLLER)
> host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
> - break;
> -
> - case ESDHC_CD_PERMANENT:
> - host->mmc->caps |= MMC_CAP_NONREMOVABLE;
> - break;
> -
> - case ESDHC_CD_NONE:
> - break;
> - }
>
> switch (boarddata->max_bus_width) {
> case 8:
> @@ -1079,6 +1048,11 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
> host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
> }
>
> + /* call to generic mmc_of_parse to support additional capabilities */
> + err = mmc_of_parse(host->mmc);
> + if (err)
> + goto disable_clk;
> +
> err = sdhci_add_host(host);
> if (err)
> goto disable_clk;
> --
> 1.9.1
>
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