Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760103AbbLCNsX (ORCPT ); Thu, 3 Dec 2015 08:48:23 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:51162 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751477AbbLCNsV (ORCPT ); Thu, 3 Dec 2015 08:48:21 -0500 From: Philip Elcan To: Ulf Hansson , Adrian Hunter , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, Timur Tabi , Jon Masters , Mark Langsdorf , Philip Elcan Subject: [PATCH] mmc: sdhci-acpi: set non-removable in ACPI table Date: Thu, 3 Dec 2015 08:48:00 -0500 Message-Id: <1449150480-1173-1-git-send-email-pelcan@codeaurora.org> X-Mailer: git-send-email 1.8.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2107 Lines: 68 This allows setting an SDHC controller as non-removable by using the _RMV method in the ACPI table. It doesn't mark it as non-removable if GPIO card detection is already setup. Signed-off-by: Philip Elcan --- drivers/mmc/host/sdhci-acpi.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index f6047fc..8c06ba6 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -288,6 +288,20 @@ static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(const char *hid, return NULL; } +static bool sdhci_acpi_is_removable(acpi_handle handle) +{ + acpi_status status; + unsigned long long removable = 1; /* default to removable */ + + if (acpi_has_method(handle, "_EJ0")) + return true; + status = acpi_evaluate_integer(handle, "_RMV", NULL, &removable); + if (ACPI_SUCCESS(status) && !removable) + return false; + + return true; +} + static int sdhci_acpi_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -300,6 +314,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev) const char *hid; const char *uid; int err; + bool gpio_cd = false; if (acpi_bus_get_device(handle, &device)) return -ENODEV; @@ -373,9 +388,14 @@ static int sdhci_acpi_probe(struct platform_device *pdev) if (mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0, NULL)) { dev_warn(dev, "failed to setup card detect gpio\n"); c->use_runtime_pm = false; + } else { + gpio_cd = true; } } + if (!gpio_cd && !sdhci_acpi_is_removable(handle)) + host->mmc->caps |= MMC_CAP_NONREMOVABLE; + err = sdhci_add_host(host); if (err) goto err_free; -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/