Commit 90e1d8cc authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Ulf Hansson
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mmc: sdhci_f_sdh30: add ACPI support 



The Fujitsu SDH30 SDHCI controller may be described as a SCX0002 ACPI
device on ACPI platforms incorporating the Socionext SynQuacer SoC.

Given that mmc_of_parse() has already been made ACPI/DT agnostic,
making the SDH30 driver ACPI capable is actually rather simple:
all we need to do is make the call to sdhci_get_of_property() [which
does not set any properties we care about] and the clock handling
dependent on whether we are dealing with a DT device, and exposing
the ACPI id via the platform_driver struct and the module metadata.

Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 3602785b

drivers/mmc/host/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -321,7 +321,7 @@ config MMC_SDHCI_BCM_KONA 
config MMC_SDHCI_F_SDH30

	tristate "SDHCI support for Fujitsu Semiconductor F_SDH30"

	depends on MMC_SDHCI_PLTFM

	depends on OF

	depends on OF || ACPI

	help

	  This selects the Secure Digital Host Controller Interface (SDHCI)

	  Needed by some Fujitsu SoC for MMC / SD / SDIO support.

drivers/mmc/host/sdhci_f_sdh30.c

+34 −18
Original line number Diff line number Diff line
@@ -10,9 +10,11 @@ 
 * the Free Software Foundation, version 2 of the License.

 */



#include <linux/acpi.h>

#include <linux/err.h>

#include <linux/delay.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/property.h>

#include <linux/clk.h>
@@ -146,7 +148,6 @@ static int sdhci_f_sdh30_probe(struct platform_device *pdev) 


	platform_set_drvdata(pdev, host);



	sdhci_get_of_property(pdev);

	host->hw_name = "f_sdh30";

	host->ops = &sdhci_f_sdh30_ops;

	host->irq = irq;
@@ -158,6 +159,9 @@ static int sdhci_f_sdh30_probe(struct platform_device *pdev) 
		goto err;

	}



	if (dev_of_node(dev)) {

		sdhci_get_of_property(pdev);



		priv->clk_iface = devm_clk_get(&pdev->dev, "iface");

		if (IS_ERR(priv->clk_iface)) {

			ret = PTR_ERR(priv->clk_iface);
@@ -177,6 +181,7 @@ static int sdhci_f_sdh30_probe(struct platform_device *pdev) 
		ret = clk_prepare_enable(priv->clk);

		if (ret)

			goto err_clk;

	}



	/* init vendor specific regs */

	ctrl = sdhci_readw(host, F_SDH30_AHB_CONFIG);
@@ -226,16 +231,27 @@ static int sdhci_f_sdh30_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_OF

static const struct of_device_id f_sdh30_dt_ids[] = {

	{ .compatible = "fujitsu,mb86s70-sdhci-3.0" },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, f_sdh30_dt_ids);

#endif



#ifdef CONFIG_ACPI

static const struct acpi_device_id f_sdh30_acpi_ids[] = {

	{ "SCX0002" },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(acpi, f_sdh30_acpi_ids);

#endif



static struct platform_driver sdhci_f_sdh30_driver = {

	.driver = {

		.name = "f_sdh30",

		.of_match_table = f_sdh30_dt_ids,

		.of_match_table = of_match_ptr(f_sdh30_dt_ids),

		.acpi_match_table = ACPI_PTR(f_sdh30_acpi_ids),

		.pm	= &sdhci_pltfm_pmops,

	},

	.probe	= sdhci_f_sdh30_probe,

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