mmc: sdhci-esdhc-imx: Call mmc_of_parse()

From: Fabio Estevam <[email protected]>

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 <[email protected]>

---
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(-)

drivers/mmc/host/sdhci-esdhc-imx.c +6 -33

index 7ee8312..82f512d 100644
@@ -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