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x86/platform/intel-mid: Enable SD card detection on Merrifield

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Intel Merrifield platform provides SD card interface. The interface allows user
to plug SD card to extend storage capacity.

Append the essential data to enable SD card detection on it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160831135713.79066-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andy Shevchenko 2016-08-31 16:57:13 +03:00 committed by Ingo Molnar
parent dd8d6ec672
commit 3976b0380b
2 changed files with 49 additions and 0 deletions
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2
arch/x86/platform/intel-mid/device_libs/Makefile
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@ -1,5 +1,7 @@
# Family-Level Interface Shim (FLIS)
obj-$(subst m,y,$(CONFIG_PINCTRL_MERRIFIELD)) += platform_mrfld_pinctrl.o
# SDHCI Devices
obj-$(subst m,y,$(CONFIG_MMC_SDHCI_PCI)) += platform_mrfld_sd.o
# WiFi
obj-$(subst m,y,$(CONFIG_BRCMFMAC_SDIO)) += platform_bcm43xx.o
# IPC Devices

47
arch/x86/platform/intel-mid/device_libs/platform_mrfld_sd.c Normal file
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@ -0,0 +1,47 @@
/*
* SDHCI platform data initilisation file
*
* (C) Copyright 2016 Intel Corporation
* Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; version 2
* of the License.
*/
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/mmc/sdhci-pci-data.h>
#include <asm/intel-mid.h>
#define INTEL_MRFLD_SD 2
#define INTEL_MRFLD_SD_CD_GPIO 77
static struct sdhci_pci_data mrfld_sdhci_pci_data = {
.rst_n_gpio = -EINVAL,
.cd_gpio = INTEL_MRFLD_SD_CD_GPIO,
};
static struct sdhci_pci_data *
mrfld_sdhci_pci_get_data(struct pci_dev *pdev, int slotno)
{
unsigned int func = PCI_FUNC(pdev->devfn);
if (func == INTEL_MRFLD_SD)
return &mrfld_sdhci_pci_data;
return NULL;
}
static int __init mrfld_sd_init(void)
{
if (intel_mid_identify_cpu() != INTEL_MID_CPU_CHIP_TANGIER)
return -ENODEV;
sdhci_pci_get_data = mrfld_sdhci_pci_get_data;
return 0;
}
arch_initcall(mrfld_sd_init);